УСТРОЙСТВО И СПОСОБ ПРИЕМА И ПЕРЕДАЧИ ОБЩЕЙ УПРАВЛЯЮЩЕЙ ИНФОРМАЦИИ В СИСТЕМЕ БЕСПРОВОДНОЙ СВЯЗИ

Изобретение относится к способу передачи общей управляющей информации от базовой станции в множество абонентских станций в системе беспроводной связи. Общая управляющая информация включает в себя первую информацию, передаваемую одновременно во все абонентские станции, и вторую информацию, передаваемую индивидуально в абонентские станции, согласно состояниям каналов абонентских станций. Первую информацию передают с использованием уровня схемы модуляции и кодирования (MCS), имеющего схему модуляции с самым низким порядком и схему кодирования с самой низкой скоростью кодирования среди всех уровней MCS, доступных в базовой станции. Вторую информацию передают с использованием уровней MCS, которые корректируют по заданному уровню в зависимости от уровней MCS, соответствующих состояниям каналов абонентских станций. Техническим результатом является максимизирование эффективности ресурсов в системе беспроводной связи. 11 н. и 28 з.п. ф-лы, 9 ил., 3 табл.

КОНКРЕТНАЯ ДЛЯ СОТЫ ПОВТОРНАЯ ПЕРЕДАЧА ДАННЫХ MBMS ОДНОЧАСТОТНОЙ СЕТИ

Изобретение относится к беспроводной связи, в частности к повторной передаче мультимедийных широковещательных многоадресных услуг для одночастотной сети (SFN). Технический результат - повышение пропускной способности. В данном изобретении описывается обеспечение повторной передачи данных SFN, включающих в себя управляемые SFN данные MBMS, таким образом, который сохраняет синхронизацию запланированных передач SFN. Данные SFN могут передаваться в первом периоде распределения, и непринятый или нераспознаваемый пакет данных SFN, ассоциированный с данными SFN, может планироваться во втором периоде распределения. Более конкретно, непринятый или нераспознаваемый пакет данных SFN может распределяться блоку второго периода распределения, который планируется, например, для передачи не-SFN. Следовательно, повторная передача SFN может происходить на посотовой основе без воздействия, по существу, на передачи SFN, синхронизированные между сотами. 10 н. и 46 з.п. ф-лы, 20 ил.

КОНФИГУРИРОВАНИЕ КАНАЛОВ УПРАВЛЕНИЯ В СИСТЕМЕ МОБИЛЬНОЙ СВЯЗИ

Изобретение относится к способу, устройству и системе для конфигурирования каналов управления в сети мобильной связи и на мобильной станции. Чтобы предложить другую усовершенствованную схему для конфигурирования каналов управления, в частности каналов управления, относящихся к передаче пользовательских данных, изобретение предусматривает выравнивание размера информации канала управления разных форматов с равным числом битов кодированной информации канала управления и/или символов модуляции для каждого канала управления. Каналы управления могут содержать информацию управления, относящуюся к диспетчеризации. Согласно другому аспекту изобретения предусмотрено более гибкое решение, которое позволяет учитывать разные геометрии мобильных станций в соте. Аналогично вышеописанному аспекту, размер информации канала управления выравнивается посредством модуляции и/или кодирования, однако информация канала управления выравнивается с одним из множества количеств битов кодированной информации канала ...

СПОСОБ И УСТРОЙСТВО ОБЕСПЕЧЕНИЯ ЭФФЕКТИВНОЙ СТРУКТУРЫ КАНАЛА УПРАВЛЕНИЯ В СИСТЕМЕ БЕСПРОВОДНОЙ СВЯЗИ

Изобретение относится к технике связи и может использоваться для передачи управляющей информации. Технический результат состоит в повышении эффективности использования пропускной способности каналов. Для этого в способе канал управления используют для передачи управляющей информации. Разделяют канал на множество подканалов, каждый из которых работает на заданной скорости передачи данных. Для каждого из одного или нескольких абонентских терминалов один из подканалов выбирается на основе одного или нескольких критериев выбора для передачи управляющей информации от точки доступа на соответствующий абонентский терминал. Управляющая информация передается от точки доступа на абонентский терминал по конкретному подканалу, выбранному для соответствующего абонентского терминала. На абонентском терминале упомянутые один или несколько подканалов декодируются для получения управляющей информации, предназначенной для абонентского терминала. 8 н. и 16 з.п. ф-лы, 12 ил., 17 табл.

СПОСОБ И УСТРОЙСТВО ДЛЯ ПЕРЕДАЧИ И ПРИЕМА РАДИОСИГНАЛОВ ПО ТЕХНОЛОГИИ ВНУТРИПОЛОСНОЙ ПЕРЕДАЧИ ПО ОДНОМУ КАНАЛУ, ВКЛЮЧАЮЩЕЙ В СЕБЯ КОДИРОВАНИЕ НА ОСНОВЕ КОМПЛЕМЕНТАРНОГО РАЗРЕЖЕННОГО КОНТРОЛЯ ПО ЧЕТНОСТИ

Изобретение относится к способам и устройствам передачи и приема радиосигналов. Технический результат заключается в повышении эффективности обработки цифровой информации. В способе принимают множество информационных битов, представляющих аудиоинформацию и/или данные, кодируют информационные биты с использованием кодирования на основе комплементарного разреженного контроля по четности (CLDPC), чтобы формировать составное кодовое слово и множество независимо декодируемых кодовых полуслов, представляющих собой блочный код половинного размера на каждой боковой полосе частот, причем комплементарный разреженный контроль по четности обеспечивает комплементарные свойства пары кодовых полуслов, содержащих составное кодовое CLDPC-слово, модулируют по меньшей мере один несущий сигнал с кодовыми битами кодовых полуслов и передают несущий сигнал(ы). 5 н. и 34 з.п. ф-лы, 17 ил.

ПЕРЕДАЧА СИСТЕМНОЙ ИНФОРМАЦИИ ПО СОВМЕСТНО ИСПОЛЬЗУЕМОМУ КАНАЛУ НИСХОДЯЩЕЙ ЛИНИИ СВЯЗИ

Настоящее изобретение относится к передаче системной информации в сетях беспроводной связи. Способ передачи системной информации по совместно используемому каналу нисходящей линии связи, структурированному как последовательные подкадры, включает в себя передачу (400-416) системной информации в регулярно появляющихся временных окнах, причем каждое временное окно охватывает некоторое число последовательных подкадров. Динамически выбирают подкадры во временном окне для переноса системной информации, включая в них указатель (406/408) принимающему пользовательскому оборудованию, какие подкадры в данном временном окне переносят системную информацию. Способ и его варианты применяются, например, для передачи динамической системной информации по совместно используемому каналу нисходящей линии связи или другому каналу нисходящей линии связи в сети (100) беспроводной связи E-UTRA 3GPP. Технический результат изобретения заключается в приеме максимального количества системной информации в минимальное ...

РЕГУЛИРОВАНИЕ СКОРОСТИ ЗАМКНУТЫМ КОНТУРОМ, ПРЕДНАЗНАЧЕННОЕ ДЛЯ МНОГОКАНАЛЬНОЙ СИСТЕМЫ СВЯЗИ

Изобретение относится к технологиям для выполнения регулирования скорости передачи данных по многочисленным параллельным каналам в многоканальной системе связи. Регулирование выполняется замкнутым контуром. Внутренний контур оценивает канальные условия для линии связи и выбирает подходящую скорость передачи данных для каждого из многочисленных параллельных каналов на основании оценок канала. Для каждого параллельного канала принимаемое отношение сигнал/шум (SNR) вычислено на основании оценок канала, рабочее SNR вычислено на основании принимаемого SNR и SNR-компенсации для параллельного канала. Скорость передачи данных выбрана на основании рабочего SNR для параллельного канала и множества требуемых SNR для множества скоростей передачи данных, поддерживаемых системой. Внешний контур оценивает качество передаваемых сигналов данных, принятых по многочисленным параллельным каналам и настраивает работу внутреннего контура. Например, SNR-компенсация для каждого параллельного канала настроена на ...

РАБОТА КАНАЛА КВИТИРОВАНИЯ ПРЯМОЙ ЛИНИИ СВЯЗИ ДЛЯ ДАННЫХ ОБРАТНОЙ ЛИНИИ СВЯЗИ

Изобретение относится к системам связи. Раскрыт способ квитирования в системе беспроводной связи. Первоначально кадр обратного дополнительного канала (R-SCH) принимается на базовой станции. Затем базовая станция передает сигнал квитирования (АСК), если качество принятого кадра R-SCH указано как хорошее. Сигнал отрицательного квитирования (NAK) передается только, если принятый кадр данных указан как плохой, но имеет достаточную энергию, чтобы совместно с энергией повторной передачи кадра данных ее было достаточно для правильного декодирования кадра данных. Если наилучшая базовая станция известна, то способ квитирования может обратить передачу сигналов квитирования для наилучшей базовой станции, чтобы передавался только сигнал NAK. При отсутствии квитирования предполагается положительное квитирование. Это делается для минимизации требований к мощности передачи. 9 н. и 22 з.п. ф-лы, 8 ил.

СПОСОБ И АППАРАТ ДЛЯ МНОГОПОЛЬЗОВАТЕЛЬСКОЙ ВОСХОДЯЩЕЙ ЛИНИИ СВЯЗИ

Изобретение относится к беспроводной связи. Технический результат заключается в потребности улучшения протокола для передачи по восходящей линии связи от множества терминалов. Предложены способы и аппарат для многопользовательской восходящей линии связи. В одном аспекте предложен способ для беспроводной связи. Способ включает в себя передачу CTX-сообщения (сообщения разрешения передачи) двум или более станциям, причем CTX указывает возможность передачи восходящей линии связи, при этом CTX-сообщение дополнительно содержит запрос того, чтобы упомянутые две или более станции одновременно передавали данные восходящей линии связи в конкретное время. Способ дополнительно включает в себя прием множества данных восходящей линии связи от по меньшей мере двух станций в конкретное время. 4 н. и 25 з.п. ф-лы, 15 ил.

ПРОТОКОЛ БЕСПРОВОДНОЙ СВЯЗИ ИГРОВОГО ТЕРМИНАЛА ДЛЯ ПЕРИФЕРИЙНЫХ УСТРОЙСТВ

Изобретение относится к области мультимедийных и игровых устройств и может быть использовано для взаимной передачи данных и голосовой информации между игровым устройством и беспроводными периферийными вспомогательными единицами оборудования. Техническим результатом является обеспечение одновременного взаимодействия множества беспроводных устройств с игровым устройством и коррекции ошибок с минимальным запаздыванием, рентабельности и эффективности. Протокол беспроводной связи игрового терминала терминалом для периферийных устройств используется в TDMA-системе с передачей широкополосных сигналов по методу частотных скачков, чтобы дать возможность одновременной взаимной передачи голоса и данных между множеством единиц беспроводного вспомогательного оборудования и игровым терминалом. Протокол предоставляет определенные временные интервалы для передач восходящего информационного потока и нисходящего информационного потока, а так же временные интервалы повторной передачи, чтобы обеспечить устойчивую ...

НАДЕЖНАЯ ДОСТАВКА ШИРОКОВЕЩАТЕЛЬНЫХ ПЕРЕДАЧ В НАЗЕМНОЙ СЕЙСМОРАЗВЕДКЕ

Изобретение относится к области геофизики и может быть использовано при проведении наземных сейсморазведочных работ. Заявленный способ для использования в наземной сейсморазведке включает в себя этап, на котором передают множество команд управления источниками во множество источников сейсмических сигналов по сети VHF/IP с использованием протокола UDP без запоминания состояния. Управляют перегрузкой по сети VHF/IP с использованием протокола UDP наряду с тем, что передают команды управления источниками. Также заявлены программный носитель данных, кодируемый с помощью команд, которые при выполнении процессором осуществляют указанный способ, и компьютер, запрограммированный осуществлять заявленный способ передачи данных сейсморазведки. Технический результат - увеличение пропускной способности и надежности двухсторонней передачи данных. 3 н. и 11 з.п. ф-лы, 9 ил.

УСТРОЙСТВО ОБРАБОТКИ ДАННЫХ И СПОСОБ ОБРАБОТКИ ДАННЫХ

Изобретение относится к технике связи и может быть использовано для обработки данных. Технический результат – обеспечение хорошего качества связи при передаче данных, используя код LDPC. Для этого бит кода для кода LDPC, в котором длина кода составляет 16200 битов и скорость кодирования составляет 8/15, обменивают с символьным битом символа, соответствующего любой из 8 точек сигнала, определенных 8PSK. Когда 3 бита битов кода, сохраненных в трех модулях хранения, имеющих емкость хранения 16200/3 битов, и считываемых поразрядно из модулей хранения, выделяют для одного символа, (#i+1)-й бит от старшего значащего бита из 3 битов из битов кода устанавливают в бит b#i, (#i+1)-й бит от старшего значащего бита из 3 битов символьных битов одного символа устанавливают в бит y#i и бит b0 обменивают на бит y1, бит b1 обменивают на бит у0 и бит b2 обменивают на бит у2. 4 н. и 2 з.п. ф-лы, 79 ил.

ПРИЕМНОЕ УСТРОЙСТВО, СПОСОБ ПРИЕМА, ПРОГРАММА И ПРИЕМНАЯ СИСТЕМА

Изобретение относится к приемному устройству, способу приема, носителю записи и приемной системе для выполнения процесса временного деперемежения, пригодного для приемников, совместимых с DVB-T.2. Техническим результатом является обеспечение возможности одновременного приема данных и сигналов управления одним и тем же устройством. Приемное устройство, соответствующее стандарту Т.2 цифрового телевещания, известному как DVB-T2, выполненное с возможностью выполнения декодирования кодов низкой плотности с контролем четкости (НПКЧ) для магистралей физического уровня (МФУ) (PLC), обозначающих потоки данных, и уровня 1 (L1), представляющего параметры передачи физического уровня. Приемное устройство включает в себя устройство декодирования НПКЧ, выполненное с возможностью того, что, когда сигнал кодированных НПКЧ данных и сигнал управления кодированной НПКЧ передачей передаются мультиплексированными, упомянутое устройство декодирования НПКЧ может декодировать как сигнал данных, так и сигнал управления ...

УСТРОЙСТВО И СПОСОБ ПЕРЕДАЧИ ИНФОРМАЦИИ ОБРАТНОЙ СВЯЗИ И УСТРОЙСТВО И СПОСОБ ПРИЕМА ИНФОРМАЦИИ ОБРАТНОЙ СВЯЗИ

Изобретение относится к области связи и характеризует способ передачи информации обратной связи, который содержит этапы, на которых: назначают с помощью eNB один и тот же совместно используемый ресурс восходящего канала для m UE, где m ≥ 2; передают eNB с помощью UE, используя совместно используемый ресурс восходящего канала, причем данные восходящего канала, которые содержат идентификатор UE и/или информацию о состоянии буферов, соответствующие UE; генерируют посредством eNB в соответствии с успешно принятыми восходящими данными, информацию обратной связи, которая содержит идентификатор UE и/или разрешение планирования восходящего канала; и передают посредством eNB информацию обратной связи, используя MAC PDU, или передают информацию подтверждения приема, используя ресурс нисходящего канала, указанный сочетанием согласованного местоположения обратной связи и смещения. В соответствии с представленным изобретением проблема, что eNB не может правильно передавать информацию обратной связи ...

РАБОТА КАНАЛА КВИТИРОВАНИЯ ПРЯМОЙ ЛИНИИ СВЯЗИ ДЛЯ ДАННЫХ ОБРАТНОЙ ЛИНИИ СВЯЗИ

... 1. Способ квитирования в системе беспроводной связи, содержащий этапы, на которых принимают кадр данных канала трафика обратной линии связи, передают сигнал квитирования (АСК), если качество принятого кадра данных указано как хорошее, и передают сигнал отрицательного квитирования (NAK) только, если принятый кадр данных указан как плохой, но имеет достаточную энергию, чтобы совместно с энергией повторной передачи кадра данных, ее было достаточно для правильного декодирования кадра данных. 2. Способ по п.1, в котором канал трафика обратной линии связи является обратным дополнительным каналом (R-SCH). 3. Способ по п.1, который также содержит этап, на котором определяют качество принятого кадра данных. 4. Способ по п.3, в котором на этапе определения качества принятого кадра данных указывают качество кадра как хорошее, когда пилот-сигнал обратной линии связи имеет достаточную энергию для правильного декодирования кадра. 5. Способ по п.1, который также содержит этап, на котором передают дельту ...

БЕСПРОВОДНОЙ ПЕРЕДАТЧИК И СПОСОБ БЕСПРОВОДНОЙ ПЕРЕДАЧИ

... 1. Радиопередающее устройство, предназначенное для осуществления многоадресной или широковещательной передачи данных для множества радиоприемных устройств с использованием общего физического канала, содержащее блок сбора данных, который осуществляет сбор информации о качестве приема для каждого из упомянутого множества радиоприемных устройств, блок установки, который устанавливает подканал, используемый для многоадресной или широковещательной передачи данных, с возможностью его переключения, из множества подканалов упомянутого общего физического канала на основании собранной информации о качестве приема, и блок управления, который управляет мощностью передачи установленного подканала. 2. Радиопередающее устройство по п. 1, в котором упомянутое множество подканалов соответствует множеству поднесущих, имеющих различные частоты, и упомянутый блок установки содержит блок выбора, который выбирает одну из упомянутого множества поднесущих на основании собранной информации о качестве приема и определяет ...

ОБНАРУЖЕНИЕ КОЛЛИЗИЙ И АДАПТАЦИЯ ОКНА ВОЗВРАТА ДЛЯ МНОГОПОЛЬЗОВАТЕЛЬСКОЙ ПЕРЕДАЧИ MIMO

... 1. Способ для беспроводной связи, содержащий:одновременную передачу от первого устройства первого множества пакетов на множество вторых устройств в первой передаче;определение, что по меньшей мере одно из множества подтверждений, соответствующих первому множеству пакетов, не было принято, и по меньшей мере одно из множества подтверждений, соответствующих первому множеству пакетов, было принято от по меньшей мере одного из множества вторых устройств; иувеличение окна конфликтов (CW) для счетчика возвратов на основании определения.2. Способ по п. 1, дополнительно содержащий:инициализацию счетчика возвратов, при этом счетчик возвратов содержит случайное число между 0 и значением CW;уменьшение подсчета счетчика возвратов; ив ответ на достижение счетчиком возвратов конца уменьшения подсчета, одновременную передачу второго множества пакетов во второй передаче.3. Способ по п. 1, дополнительно содержащий этап увеличения счетчика возвратов на основании определения, при этом увеличение CW содержит ...

ПЕРЕДАЧА СООБЩЕНИЙ ACK/NACK В ОДНОЧАСТОТНОЙ СЕТИ

Изобретение относится к области беспроводной связи. Технический результат состоит в обеспечении доставки информации обратной связи от нескольких базовых станций одному устройству пользователя. Для этого реализован способ обеспечения устройству пользователя обратной связи от множества базовых станций одночастотной сети для указания того, успешно ли приняты переданные данные, при этом положительное подтверждение успешного приема отправляется с использованием первого ресурса для обратной связи, а отрицательное подтверждение неуспешного приема отправляется с использованием второго ресурса для обратной связи, при этом первый и второй ресурсы для обратной связи взаимно ортогональны. 2 н. и 4 з.п. ф-лы, 3 ил., 1 табл.

СПОСОБ ИДЕНТИФИКАЦИИ СИГНАЛА С ПРОСТРАНСТВЕННО-ВРЕМЕННЫМ КОДИРОВАНИЕМ В СИСТЕМЕ БЕСПРОВОДНОЙ СВЯЗИ

... 1. Способ идентификации сигнала с пространственно-временным кодированием в системе беспроводной связи, имеющей, по меньшей мере, два различных типа декодера, при этом способ включает в себя ! прием, по меньшей мере, одного пилот-сигнала от передающей стороны, причем пилот-сигнал представлен либо типом 0, либо типом 1; ! определение, какой из типа 0 или типа 1 представлен в принятом пилот-сигнале; и ! активирование пространственно-временного декодера, если пилот-сигнал имеет тип 1. ! 2. Способ по п.1, в котором каждый пилот-сигнал представляет определенный шаблон. ! 3. Способ по п.1, в котором тип 0 представляет сигнал без пространственно-временного кодирования, а тип 1 представляет сигнал с пространственно-временным кодированием. ! 4. Способ по п.1, дополнительно содержащий активацию декодера по умолчанию, если условие канала для принимаемого пилот-сигнала превышает пороговый уровень. ! 5. Способ по п.4, в котором активация декодера по умолчанию осуществляется, если условие канала для принятых ...

НАДЕЖНАЯ ДОСТАВКА ШИРОКОВЕЩАТЕЛЬНЫХ ПЕРЕДАЧ В НАЗЕМНОЙ СЕЙСМОРАЗВЕДКЕ

... 1. Реализованный с помощью компьютера способ, используемый в наземной сейсморазведке, содержащий этапы, на которых:передают множество команд управления источниками во множество источников сейсмических сигналов по сети VHF/IP; иуправляют перегрузкой по сети VHF/IP, наряду с тем, что передают команды управления источниками.2. Реализованный с помощью компьютера способ по п.1, в котором передача команд управления источниками включает в себя широковещательную передачу команд управления источниками.3. Реализованный с помощью компьютера способ по п.1, в котором передача команд управления источниками включает в себя повторную передачу пропавших пакетов.4. Реализованный с помощью компьютера способ по п.1, в котором передача команд управления источниками включает в себя передачу команд управления источниками, используя протокол пользовательских дейтаграмм.5. Реализованный с помощью компьютера способ по п.1, в котором управление перегрузкой включает в себя этапы, на которых:определяют, что пакет для ...

ПЕРЕДАЧА СИСТЕМНОЙ ИНФОРМАЦИИ ПО СОВМЕСТНО ИСПОЛЬЗУЕМОМУ КАНАЛУ НИСХОДЯЩЕЙ ЛИНИИ СВЯЗИ

УСТРОЙСТВО ПЕРЕДАЧИ И СПОСОБ ПЕРЕДАЧИ

СПОСОБ ВЫПОЛНЕНИЯ ПРОЦЕДУРЫ АДАПТАЦИИ ЛИНИИ СВЯЗИ

... 1. Способ связи посредством мобильной станции в системе беспроводной локальной сети, при этом способ содержит этапы, на которых:принимают и декодируют, посредством мобильной станции, первый блок данных, переданный точкой доступа (AP) через многопользовательскую с множеством входов/множеством выходов (MU MIMO) передачу множеству мобильных станций,при этом первый блок данных включает в себя информацию оценки канала, используемую для оценки канала для каждой из множества мобильных станций, и первый идентификатор, идентифицирующий множество станций.2. Способ по п.1, при этом способ дополнительно содержит этап, на котором:определяют, посредством мобильной станции, что мобильная станция принадлежит множеству станций, указываемому первым идентификатором,при этом первый идентификатор передают в заголовке процедуры конвергенции физического уровня (PLCP) первого блока данных.3. Способ по п.2, дополнительно содержащий этап, на котором:передают в AP, посредством мобильной станции, второй блок данных ...

СПОСОБ И АППАРАТ ДЛЯ МНОГОПОЛЬЗОВАТЕЛЬСКОЙ ВОСХОДЯЩЕЙ ЛИНИИ СВЯЗИ

УСТРОЙСТВО И СПОСОБ УСОВЕРШЕНСТВОВАННОЙ ОБРАБОТКИДАННЫХ УПРАВЛЕНИЯ РАДИОКАНАЛОМ, РАБОТАЮЩИМ В РЕЖИМЕ БЕЗ ПОДТВЕРЖДЕНИЯ

... 1. Способ обработки блоков данных многоадресной услуги в системе мобильной связи, включающий в себя прием блоков протокольных данных модулем уровня управления радиоканалом, который работает в режиме без подтверждения и имеет окно приема и таймер; переупорядочение принятых блоков протокольных данных с использованием порядковых номеров принятых блоков протокольных данных, окна приема и таймера; обработку переупорядоченных блоков протокольных данных для восстановления как минимум одного блока служебных данных и доставку упомянутого как минимум одного блока служебных данных. 2. Способ по п.1, дополнительно включающий в себя шаг, на котором в соответствии с указанием, принятым с вышерасположенного уровня, решают, выполнять или нет шаг переупорядочения. 3. Способ по п.1, где при использовании окна приема на основе принятого блока протокольных данных управляют диапазоном порядковых номеров блоков протокольных данных, прием которых ожидается. 4. Способ по п.1, где окно приема используют при временном ...

МЕХАНИЗМ ЗАПРОСА НА ВОССТАНОВЛЕНИЕ ДАННЫХ В РЕЖИМЕ "ТОЧКА-ТОЧКА" ДЛЯ СИСТЕМ ПЕРЕДАЧИ "ТОЧКА-МНОГО ТОЧЕК"

... 1. Способ передачи пакетов данных в системе, способной к передаче в режиме "точка - много точек", включающий передачу одного или более пакетов данных из передатчика в один или более приемник, при этом по меньшей мере одному конкретному приемнику из указанных приемников требуется прием пакетов восстановительных данных, и передачу информации восстановления в сервер восстановления данных для запуска передачи указанных пакетов восстановительных данных, причем указанная информация восстановления включает информацию, относящуюся к количеству переданных пакетов данных, правильно принятых указанным конкретным приемником. 2. Способ по п.1, в котором указанные пакеты восстановительных данных требуются вследствие потери или неправильного приема по меньшей мере одного из указанных переданных пакетов данных указанным конкретным приемником. 3. Способ по п.1, в котором указанные переданные пакеты данных относятся к объектам данных. 4. Способ по п.3, в котором указанные пакеты восстановительных данных ...

Kommunikationssteuerverfahren

KORRESPONDIERENDES KOMMUNIKATIONSSYSTEM ZUR UEBERTRAGUNG VON TELEGRAMMEN

VERFAHREN UND VORRICHTUNG ZUR ERKENNUNG UND KLASSIFIKATION VON STÖRUNGEN IN EINEM RF-MODULIERTEN NETZWERK

VERFAHREN UND VORRICHTUNG ZUR ERKENNUNG UND KLASSIFIKATION VON STÖRUNGEN IN EINEM RF-MODULIERTEN NETZWERK

Data e.g. image data, transmitting method for e.g. mobile telephone, involves receiving and processing one group of data packets in time segment when incorrect data packet is determined for partially reconstructing incorrect data packet

The method involves emitting broadcasting signals with two groups of data packets. One group of data packets (DA1) is received and processed in a time segment (ZA1`) by a communication sending device. A determination is made whether the received data packet is incorrect. Another group of data packets (DA2) is received and processed in another time segment (ZA2`) by the communication sending device when an incorrect data packet is determined for partially reconstructing the incorrect data packet. An independent claim is also included for a communication arrangement for transmitting data.

Verfahren zum Übertragen von Daten

Verfahren zum Übertragen von Daten an ein Kommunikationsendgerät (MFG), das zum Empfangen von Rundfunksignalen und zum Senden von Funksignalen in vorbestimmten Sendezeitabschnitten eingerichtet ist, bei dem von dem Kommunikationsendgerät in Sendezeitabschnitten Funksignale gesendet werden, durch die der Empfang von Rundfunksignalen beeinflusst wird, mit folgenden Schritten: Abstrahlen von ersten Rundfunksignalen (RFK1) umfassend eine Gruppe von ersten Datenpaketen, welche erste Inhalte aufweisen, in ersten Zeitabschnitten (ZA1, ZA1', ZA1''); Abstrahlen von zweiten Rundfunksignalen (RFK2) umfassend eine Gruppe von zweiten Datenpaketen, welche zweite Inhalte aufweisen, die zumindest teilweise den ersten Inhalten entsprechen, in auf die ersten Zeitabschnitte folgenden zweiten Zeitabschnitten (ZA2, ZA2', ZA2''); Ermitteln der Sendezeitabschnitte seitens des Kommunikationsendgeräts; Empfangen und Verarbeiten der Gruppe von ersten Datenpaketen durch das Kommunikationsendgerät in einem ersten ...

Method for transmitting Internet protocol-datagram from e.g. broadcast transmitter to multiple receivers, involves generating redundant packet and performing redundant packet re-transmission if packet is corrupted or missed

The method involves generating a redundant packet by identifying a data packet that is requested by a large number of users for retransmission. The redundant packet re-transmission is performed by a transmitter to multiple receivers if a packet is corrupted or missed, where the redundant packet comprises a missing or incorrect data packet or a linear combination of missing or incorrect data packet with a correctly received data packet. The missing and incorrect data packets are recovered in a user side using Gaussian elimination algorithm.

PUNKT-ZU-PUNKT-REPARATURANFRAGESMECHANISMUS FÜR PUNKT-ZU-MEHRPUNKT-ÜBERTRAGUNGSSYSTEME

Verfahren und Anordnung zur Datenübertragung mit einer Mehrpunktverbindung

Verfahren zur Datenübertragung in einer Mehrpunktverbindung von einer Ursprungsapplikation (11) an wenigstens zwei Zielapplikationen (12, 13), mit folgenden Schritten: Bereitstellen (81) der zu übertragenden Daten sowie einer Liste der Adressen der Zielapplikationen (12, 13) durch die Ursprungsapplikation (11) an eine Steuereinrichtung (31), Steuern einer Sendeeinrichtung (51), die die Daten an Empfangseinrichtungen (62, 63) überträgt, die den jeweiligen Zielapplikationen (12, 13) zugeordnet sind, durch die Steuereinrichtung und Erstellen jeweils einer Empfangsquittung durch die Empfangseinrichtungen (62, 63) und Bereitstellen der Daten für die zugeordnete Zielapplikation nach Beenden der Datenübertragung und Senden (87, 88) der Quittungen an die Sendeeinrichtung (51).

Channel quality indicators

UMTS system with requested packet retransmissions sent on a different channel from the original transmission

A method of packet retransmission in a communications system (1), the system comprising a plurality of user devices (M1 to M4) and at least one network device (B1), involving broadcasting e.g. a multimedia broadcast multicast service (MBMS) transmission (2) to the plurality of user devices (M1 to M4), sending a request for retransmission (3, 4) to the network device (B1) from one or more of the user devices which failed to receive the complete transmission correctly and retransmitting requested packets of the original transmission on a different transmission channel to the original broadcast channel, whilst continuing to broadcast new data on the original channel. This is stated to avoid problems of inserting retransmitted packets in the original channel, so that its data rate remains unchanged, and to allow the use of better error protection, through coding or HARQ, and lower power transmision of the retransmitted signal to one user or a group of users smaller than the original transmission ...

A data link system

The system comprises a command control station 2, a network 8 of relay elements 10 and an array 4 of remote sensor units 6. The sensor units 6 and relay elements 10 are responsive to signal reception by output of an acknowledgement signal. The control station 2 routes signals either directly to sensor units 6 or to relay elements 10 or indirectly via the network 8 of relay elements in accordance with whether or not an acknowledgement signal is generated thereby. The control station (2), the relay elements (10) and the sensor units (6) incorporate a transceiver (12,38,142 Figs 2-4 not shown) and a data processing unit (14,42,140). A similar configuration of data processing unit (14,42,140) is used in the control station (2), in the relay elements (10) and in the sensor units (6); the data processing unit (14,42,140 Fig 5 not shown) incorporates a power controller (26,126,226), a clock (34,134,234), a digital processor (30,130,230) a modem (28,128,228) and an interface multiplexer (36,136,236 ...

Transmitting common information to plural UEs in a communication system supporting High Speed Downlink Packet Access (HSDPA) data transmission

In a CDMA communication system supporting a HSPDA service, the system transmits control information 505, including common ID information, in order to transmit common information to at least two UEs among a plurality of UEs supporting the HSPDA service. The system transmits the common information over a Shared Control Channel (SHCCH) in a transmission time interval at the same time or later than the transmission time interval in which the control information is transmitted. Upon generation of the common information an indicator HI 504 indicating the expected transmission of the control information may be transmitted over a dedicated channel. If the common information received by a particular UE contains errors the UE may transmit a negative acknowledgment (NACK)507, 508 upon receipt of which the common information is retransmitted 509. The common information may be transmitted at a transmission power higher than that used to transmit other than common information.

Method and apparatus for transmitting data

One-to-multiple site radio packet communication

A transmission control system for performing one-to-multiple site data transmission by a radio packet communication, comprises a plurality of communication terminals 10, 20 and a communication base station 30 for determining timing of access control as well as timing of sending and receiving transmission data, said communication terminals and said communication base station being connected via a radio packet communication system, in which the receiving communication terminal 20 sends a negative acknowledgment (NAK) signal (23) on the failure in receiving a packet signal sent from the communication base station 30, the communication base station resends the packet signal which is not received by the communication terminal 20 upon receipt of the negative acknowledgment (NAK) signal, and the transmitting communication terminal 10 sending the packet signal resends the packet signal which was sent just before, upon receipt of the packet signal resent from the communication base station 30. Collision ...

Data transmission control system

Multicast transmission

Communication apparatus,communication system and communication method

Grouped multi-user downlink transmissions in an 802.11ax network

Wireless communications system and method

Multicast data transmission systems

Transmitter and method of transmitting

Data transmission system for more than two subscribers

... 1,143,746. Data transmission systems. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 15 March, 1966 [17 March, 1965], No. 11263/66. Heading H4P. In a system in which the same data is transmitted to at least two receivers E and in which errors are corrected by repetition, the receivers E are connected to the transmitter S by one or more transmission lines L which are returned to the transmitter. There may be a plurality of receivers in series on each transmission line loop. Errors in transmission are detected by returning to the transmitter the data from the final receiver on each loop for comparison with the data as originally sent on that loop. Alternatively, the return signal may comprise signals derived from the final receiver, e.g. redundancy signals. Each receiver may correct errors prior to passing the corrected data to the following receiver. If the errors cannot be so corrected the data is deliberately mutilated, to ensure that repetition occurs. The receiving unit of the transmitter may ...

Method and apparatus for transmitting data

Improved acknowledgment of grouped multi-user downlink transmissions in an 802.11AX network.

PROCEDURE FOR THE MULTI-ADDRESS CALLING OF A MULTIPLE CALL OVER THE AIR INTERFACE

RECEIPT MECHANISM, TRANSMISSION MECHANISM AND COMMUNICATION PROCEDURE

WIRELESS AUDIO TRANSMISSION SYSTEM AND - PROCEDURES WITH DYNAMIC TIME SLOT ASSIGNMENT

PROCEDURE AND COMPUTING PROGRAM PRODUCT FOR THE EFFICIENT ONE AND SAFE ONE SENDING SMALL DATA MESSAGES FROM A TRANSMITTER TO A LARGE NUMBER OF EMPFANGSSYSTEMEN

ADDITIONAL HOCHRATIGE CHANNELS FOR CDMA COMMUNICATION SYSTEM

TRANSMITTING STRAINING MINUTES FOR A WIRELESS COMMUNICATION SYSTEM

mULTICAST DATA COMMUNICATIONfEEDBACK SIGNALING IN A

SYSTEMS AND PROCEDURES FOR THE OPTIMIZATION OF THE RESOURCES ASSIGNMENT IN A WIRELESS COMMUNICATION SYSTEM

OPERATED A FORWARD DISTANCE CONFIRMATION CHANNEL FOR THE RÜCKWÄRTSSTRECKENDATEN

RANDOM ACCESS FOR WIRELESS MULTIPLE ACCESS TRANSMISSION SYSTEMS

DEVICE, PROCEDURE AND COMPUTER PROGRAMME PRODUCT ZÜR RESOURCES ASSIGNMENT FOR REPETITIVE TRANSMISSIONS

WAS BASED TRANSMISSION OF UTILIZABLE DATA WITH VARIABLE DATA RATE

EFFICIENT MULTICASTING FOR PACKAGE DATA SYSTEMS

DEVICE AND PROCEDURE FOR SENDING AND RECEIVING A OFDM OF SIGNAL

SYSTEM AND PROCEDURE FOR THE FRAMEWORK NEW TRANSMISSION IN A ROUND TRANSMISSION COMMUNICATION SYSTEM

EXTENTIONS FOR DATA LINK LAYER IN A WIRELESS MAC MINUTES WITH HIGH LATENCY

LIMITED AUTOMATIC REQUEST FOR REPETITION FOR FRAMEWORK-BASED COMMUNICATION CHANNELS

MULTICAST RADIO COMMUNICATION SYSTEM AND ARRANGEMENT

PROCEDURE AND DEVICE FOR POINT OF POINT TO HONOUR DATA COMMUNICATION WITH ARQ

PROCEDURE AND EQUIPMENT FOR WIRELESS COMMUNICATION

Event trigger for independent links

Various aspects of the disclosure relate to event triggers for independent links. For example, an event trigger may be based on measurements from multiple links. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, an event trigger may be based on aggregated measurements from multiple links.

Methods and apparatuses for power control for independent links

Various aspects of the disclosure relate to power control for independent links. For example, power control at a device may be based on transmissions on multiple links. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, power control for the first device may be based on power control commands received on multiple links. In some scenarios, a power control constraint may be met taking into account the transmission power on multiple links.

Quality dependent data communication channel

Method and apparatus for multicasting with feedback information

Method and system for transmitting data packets to multiple receivers

Data processing device and data processing method

Method and apparatus for acknowledgement and retransmission of multicast data in wireless local area networks

A method and apparatus are described including multicasting a plurality of data units and multicasting a request for acknowledging receipt of the plurality of data units, receiving signals responsive to the request. Also described are a method and apparatus including receiving a multicast request to acknowledge receipt of data, determining if a response to the request is required, determining status of the data, preparing the response based on the determining acts and transmitting the response.

Method and system for authorizing multimedia multicasting

Apparatus and method for transmitting and receiving common control information in a wireless communication system

Point-to-point repair request mechanism for point-to-multipoint transmission systems

Multi-channel transmission and reception with block coding in a communication system

Method and apparatus for multicasting with feedback information

Method and apparatus for providing an efficient control channel structure in a wireless communication system

A method for data repair in a system capable of handling multicast and broadcast transmissions

RANDOM ACCESS MULTIPOINT DATA COMMUNICATION SYSTEM

Dynamic link assignment in a communication system

Methods and apparatuses for beam information for independent links

Various aspects of the disclosure relate to beam information for independent links. For example, beam information for one link may be sent on at least one other link. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, one link can indicate beam switching for at least one other link. In some scenarios, one link can indicate link recovery for at least one other link. In some scenarios, one link can indicate link failure for at least one other link.

DATA COMMUNICATIONS SYSTEM

Method and apparatus for coordinating multi-point-to-point communications in a multi-tone data transmission system

Error detection scheme for ASQ systems

ALLOCATING DATA BURSTS AND SUPPORTING HYBRID AUTO RETRANSMISSION REQUEST IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING ACCESS RADIO ACCESS SYSTEM

METHOD OF PROVIDING POINT-TO-MULTIPOINT SERVICE IN MOBILE COMMUNICATION SYSTEM

A method of providing a point-to-multipoint service in a mobile communication system and transmission controlling method thereof are disclosed, by which a better quality of a point-to-multipoint service can be provided in a manner of coping with time-variable channel situation variable adaptively. In a mobile communication system providing a point-to-multipoint service, the present invention includes the steps of receiving data for the point-to-multipoint service from a base station, measuring a reception quality for the received point-to-multipoint service data, and transmitting reception quality information for the point-to-multipoint service data to the base station.

MULTI-CHANNEL TRANSMISSION AND RECEPTION WITH BLOCK CODING IN A COMMUNICATION SYSTEM

Techniques for transmitting and receiving multiple channels with block coding in a communication system are disclosed. In one aspect, a secondary broadcast channel (320) is transmitted concurrently with parity information, encoded from a primary broadcast channel (310). In another aspect, a mobile station(106)repurposes its receiving circuitry to receive one or more portions of the secondary broadcast channel after a sufficient portion of the primary broadcast channel is received without identified error. In another aspect, secondary broadcast channels associated with a plurality of primary broadcast channels (610) are multiplexed onto a single secondary channel (620). Various other aspects are also presented. These aspects have the benefit of minimizing mobile station resources required to receive multiple broadcast channels, as well as reducing the complexity and channel resources required to transmit multiple broadcast channels.

APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING COMMON CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM

A method for transmitting common control information from a base station to a plurality of subscriber stations in a wireless communication. The common control information includes first information transmitted in common to all of the subscriber stations and second information separately transmitted to the subscriber stations according to channel states of the subscriber stations. The first information is transmitted using an MCS (Modulation and Coding Scheme) level having a modulation scheme with a lowest order and a coding scheme with a lowest coding rate among all MCS levels available in the base station. The second information is transmitted using MCS levels that are adjusted by a predetermined level against MCS levels corresponding to channel states of the subscriber stations.

METHOD OF CONTROLLING REVERSE TRANSMISSION IN A MOBILE COMMUNICATION SYSTEM

A reverse transmission controlling method in a mobile communication system, after receiving forward information, commanding the increase or decrease of the reverse data rate received on a forward control channel from a base station, a mobile station determines whether the previous rate increase available information transmitted to the base station on a reverse control channel before reception of the forward information indicates that a reverse data rate increase is available, if the forward information commands a reverse data rate increase. The mobile station increases the current reverse data rate to a data rate equal to or less than a maximum reverse data rate if the rate increase available information indicates that the reverse data rate increase is available, and transmits reverse data at the increased reverse data rate.

ADAPTIVE CELL-LEVEL MODULATION AND CHANNEL CODING

In a digital cellular radio communication network (15), modulation and channel coding (35, 37) for a plurality of radio links (18) of a given cell is determined in response to quality information (21) received during network operation and indicative of communication quality associated with the plurality of radio links. A single modulation and channel coding scheme (28) is determined in response to the quality information, and the single modulation and channel coding scheme is used in all of the links of said cell.

CONFIGURATION OF CONTROL CHANNELS IN A MOBILE COMMUNICATION SYSTEM

The invention relates to a method, apparatus and system for configuring c ontrol channels in a mobile communication network and a mobile station. In o rder to suggest another improved scheme for configuring control channels, in particular control channels related to the transmission of user data the in vention suggests aligning the size of the control channel information of dif ferent formats to an equal number of coded control channel information bits and/or modulation symbols for each control channel. The control channels may comprise scheduling related control information. According to another aspec t of the invention, a more flexible solution is proposed that may allow for taking different geometries of mobile stations within a cell into account. S imilar to the aspect above, the size of the control channel information is a ligned by means of modulation and/or coding, however the control channel inf ormation is aligned to one out of a set of numbers of coded control channel information ...

TRANSMISSION STREAM GENERATING DEVICE FOR GENERATING TRANSMISSION STREAM WHICH ADDITIONAL DATA IS STUFFED IN A PAYLOAD AREA OF A PACKET, DIGITAL BROADCAST TRANSMITTING/RECEIVING DEVICE FOR TRANSMITTING/RECEIVING THE TRANSMISSION STREAM, AND METHODS THEREOF

A digital broadcast receiving apparatus comprises a demodulator for receiving and demodulating a stream transmitted from a digital broadcast transmitting apparatus, an equalizer for equalizing the demodulated stream, and a data processing unit for decoding the equalized stream. The stream is interleaved in a state that supplementary data which are processed to be robust against errors are inserted into the entire payload region of at least one packet constituting the stream, and is transmitted from the digital broadcast transmitting apparatus.

Communication method using multi-radio and communication apparatus

Provided is a communication method and apparatus using a multi-radio. The communication method includes establishing a link via at least one node included in a group that uses a low data-rate radio (LDR); transmitting a data frame to the at least one node included in the group; and receiving, using a multi-radio based on an availability of the LDR, an acknowledgement (ACK) with respect to the transmitted data frame.

System and method for managing acknowledgement messages in a very large computer network

A multicast message may be distributed by receiving, at a first node in a multicast network, a multicast message from a parent node of the first node. The multicast message is transmitted to child nodes of the first node in the multicast network. A population of the child nodes to which the multicast message was transmitted is accessed and acknowledgement messages which reveal child nodes that are among an acknowledging subset of less than all of the child nodes of the first node are received. Child nodes revealed by the received acknowledgement messages are compared with child nodes determined to be among the population of child nodes to which the multicast message is expected to be received. Based on results of the comparison, a compressed non-acknowledging subset is identified and transmitted to the parent node.

Method and system for dynamically adapting a modulation and coding scheme

The invention is directed to a method for dynamically adapting a modulation and coding scheme for a base station transmitting a multicast-and-broadcast service to a plurality of subscribers. The method comprises periodically performing a transmission adapting process. The transmission adapting process comprises steps of setting a feedback condition according to a coverage corresponding to the multicast-and-broadcast service and sending a negative-acknowledge-based feedback query including the feedback condition, a feedback channel and feedback information corresponding to the multicast-and-broadcast service to the subscribers. According to a feedback-receiving status, the base station adapts a modulation and coding scheme for transmitting the multicast-and-broadcast service.

Encoding and decoding methods and apparatus for use in a wireless communication system

The claimed subject matter relates to encoding and decoding information in a wireless communication system using soft-demodulation and interleaving of concatenated code received in a strip channel. A set of symbols is received containing a plurality of information bits, dividing the received set of symbols into a plurality of subsets of symbols, each subset corresponding to the input of an inner code demodulation selecting a set of initial a priori values of the inner code demodulation for each subset of symbols, and demodulating each subset of symbols, using the initial a priori values of the subset of symbols and an inner code generator matrix, to generate a plurality of first soft information values as the output of the inner code demodulation.

Method and device for ensuring quality of service of internet protocol television live broadcast service

Embodiments of the present invention provide a method for ensuring quality of service of an Internet Protocol television live broadcast service, and the method includes: detecting a live broadcast packet received from an original multicast group ( 100 ); if detecting that the live broadcast packet has an error or a loss, joining a multicast group corresponding to a delay multicast stream sent by a retransmission server, and receiving a delay retransmission packet from the delay multicast stream ( 102 ); and recovering the live broadcast packet according to the received delay retransmission packet ( 104 ). Correspondingly, a terminal and a retransmission server are provided. Once the terminal detects that the original packet has a loss or an error, the terminal directly receives a packet from a delay packet stream sent by the retransmission server for recovering, thereby avoiding a NACK storm, simplifying the processing of the retransmission server, and improving the retransmission efficiency.

COFDM digital television receivers for iterative-diversity reception

Receivers with capability for iterative-diversity reception of COFDM digital television transmissions of repeated similarly coded data are described. Also described are receivers with capabilities for receiving COFDM digital television transmissions in which earlier transmissions of coded data are later followed by subsequent transmissions of the same data differently coded. The receivers use maximal-ratio code combining techniques for repeated components in the COFDM digital television transmissions. The receivers use turbo decoding techniques for concatenated coding of data in the COFDM digital television transmissions.

Method and system for digital content transmission

Disclosed embodiments include a method and an apparatus for digital content transmission that comprise: (a) partitioning the digital content into a plurality of sequential segments; (b) selecting a plurality of transmission time instants for each of the sequential segments as a function of their order; (c) generating a plurality of linear combinations of the plurality of sequential segments during the plurality of transmission time instants resulting in a plurality of linearly combined coded segments; and (c) transmitting the plurality of linearly combined coded segments from a server to a plurality of clients. In particular embodiments, the method and apparatus further comprise performing error correction based on an implicit error correction (IEC) method that employs the redundancy present in the linearly combined coded segments to perform error correction at the client side without extra bandwidth cost.

Method and apparatus for transmitting and receiving information in a broadcasting/communication system

A method and apparatus are provided for transmitting and receiving information in a broadcasting/communication system. The method includes comparing a number of bits of an information word to be transmitted with a predetermined threshold value; if the number of bits of the information word is less than the predetermined threshold value, determining a first parameter pair; if the number of bits of the information word is not less than the predetermined threshold value, determining a second parameter pair; determining a number of bits to be punctured based on one of the first parameter pair and the second parameter pair; and puncturing the determined number of bits to be punctured, with respect to parity bits of a codeword generated by encoding the information word.

Local selection of retransmitting device in cooperative cluster to enhance cellular multicast

A method for local selection of a retransmitting user equipment within a cluster comprises: selecting first retransmission indication information according to a first pre-defined criterion, in response to receipt of non-acknowledgement information from at least one non-acknowledgement user equipment at which a data packet from a network node is decoded incorrectly; performing a local selection of a retransmitting user equipment within a cluster based at least in part on the first retransmission indication least one non-acknowledgement user equipment, and at least one acknowledgement user equipment at which the data packet is decoded correctly; and determining whether or not to retransmit the data packet to the at least one non-acknowledgement user equipment, based at least in part on the local selection of the retransmitting user equipment.

Multicast management method and apparatus

A multicast management method of a base station is provided. The base station generates a CRC for a message including resource allocation information of a multicast group including a plurality of terminals, and masks the CRC by a CRC mask. The base station adds the masked CRC to the message, and then transmits the message to which the masked CRC is added to the multicast group.

Component carrier uplink maximum transmission power reporting scheme for carrier aggregation

Embodiments of the present disclosure describe method, apparatus, and system configurations for reporting uplink maximum transmission power for each component carrier of a carrier aggregation scheme. A method includes establishing, by a user equipment (UE), a communication link with an enhanced node B (eNB) station of an Internet Protocol (IP) based wireless communication network, and sending, by the UE to the eNB station, a message that includes information for a Power Headroom Report (PHR) and a value that indicates an uplink maximum transmission power P CMAX,c for individual active component carriers of a carrier aggregation scheme. Other embodiments may be described and/or claimed.

Adaptive forward error correction in passive optical networks

A method for an adaptive forward error correction (FEC) in a passive optical network. The method comprises selecting an initial downstream FEC code to be applied on downstream data transmitted from an optical line terminal (OLT) to a plurality of optical network units (ONUs) of the PON; communicating the selected downstream FEC code to the plurality of ONUs; receiving at least one downstream bit error ratio (BER) value from at least one ONU of the plurality of ONUs, wherein the downstream BER value is measured respective to downstream data received at the at least one ONU; changing the selected downstream FEC code to a new downstream FEC code based on a plurality of downstream BER values measured by the at least one ONU; and communicating the new downstream FEC code to the plurality of ONUs.

Device and method for scheduling data packet transmissions in wireless networks

For load balancing in a large-scale wireless mesh network, a device, a system and a method are provided for controlling data packet transmissions in the wireless mesh network, wherein a time slot is randomly selected within a determined answer interval for transmitting an answer responding to a received data packet.

Transmission stream generating device for generating transmission stream which additional data is stuffed in a payload area of a packet, digital broadcast transmitting/receiving device for transmitting/receiving the transmission stream, and methods thereof

A transmission stream (TS) generating apparatus includes an adaptor which receives general data and generates a stream having a plurality of packets, and which provides adaptive field in some of the plurality of packets, and an inserter which inserts additional data into all the payload areas of some of the plurality of packets that are not provided with the adaptive fields. Because additional data is transmitted, without requiring adaptive field header in certain packet, a data transmission rate is increased.

Method for uniquely addressing a group of network units in a sub-network

In embodiments of the present disclosure improved capabilities are described for delivering a command to a group of computing devices, comprising sending a message from a controller to a first of a plurality of computing devices, wherein the plurality of computing devices are on the same network, and where the message includes a plurality of bit-wise addresses and a command. The message is then broadcast from the first of the plurality of computing devices to the remaining of the plurality of computing devices. The execution of the command amongst the executing each of the plurality of computer devices is made with low time-latency due to the near-simultaneous delivery of the message to the plurality of computing devices.

Method for transmitting signal in multiple node system

Provided is a signal transmission method of a multi-node system employing a plurality of nodes and a base station that can control each of the plurality of nodes. The method includes: transmitting per-node transmission information to a user equipment; transmitting at least one stream to the user equipment by applying a precoding matrix determined for each node in at least one node among the plurality of nodes; and receiving per-node feedback information from the user equipment, wherein the per-node feedback information includes information on a precoding matrix applicable to a node which transmits the at least one stream.

Apparatus and method for transmitting and receiving reference signal in wireless communication system

An apparatus and a method for transmitting and receiving a reference signal in a wireless communication system are provided. The method includes determining a cluster-specific reference signal configuration according a cluster configuration, transmitting information about the cluster-specific reference signal configuration, and transmitting cluster-specific reference signals of at least one cluster according to the cluster-specific reference signal configuration.

Time-interleaved simulcast for tune-in reduction

A method includes generating a first coded data stream and a second coded data stream both representing the same content, the first coded data stream and the second coded data stream being independently decodable from each other, transmitting portions of the first coded data stream in first and second time-sliced bursts, and transmitting a portion of the second coded data stream in a third time-sliced burst, where the transmission of the portions of the first and second coded data streams do not overlap with each other, and occur subsequently to each other in transmission order and substantially without delay between transmission of data.

Comprehensive End-to-End Storage Area Network (SAN) Application Transport Service

Disclosed is a method and system for transmitting data on a data channel from a source to a destination. The data channel has a plurality of wavelength channels and a throughput. The system and method include a storage application for multicasting data on each of the plurality of wavelength channels, a storage protocol extension device using buffer credits to adjust the throughput during the multicasting, and an application optimization device for managing data channel latency to achieve asymmetric mirroring behavior at the same time as the multicasting.

Method and apparatus for managing resource

A method of managing a resource is provided by a base station. The base station allocates a resource to a terminal, and generates a downlink control channel including information of the allocated resource and a transmission time of a next downlink control channel. Further, the base station transmits the downlink control channel to the terminal.

Controller device with retransmission upon error

A controller includes a link interface that is to couple to a first link to communicate bi-directional data and a second link to transmit unidirectional error-detection information. An encoder is to dynamically add first error-detection information to at least a portion of write data. A transmitter, coupled to the link interface, is to transmit the write data. A delay element is coupled to an output from the encoder. A receiver, coupled to the link interface, is to receive second error-detection information corresponding to at least the portion of the write data. Error-detection logic is coupled to an output from the delay element and an output from the receiver. The error-detection logic is to determine errors in at least the portion of the write data by comparing the first error-detection information and the second error-detection information, and, if an error is detected, is to assert an error condition.

Method and system for synchronization and remote control of controlling units

Systems and methods for controlling devices, including controller and actuators are disclosed. Actuators may be devices where remote control of the device or devices is convenient, such as lights, window shades, fans and similar items. In one method, a user sends a command to a controller and to an actuator. The controller also sends a proxy update to a second controller that is also in communication with the actuator. The proxy controller, also in contact with the actuator, now has knowledge of the state or position of the actuator and is in a better position if the proxy controller is asked to assume control of the actuator. In another method, an actuator or controller may also receive a trigger setup, asking the actuator to tell the controller when an action occurs, but not to take action until receiving a further command from the controller.

BIT INTERLEAVER FOR LOW-DENSITY PARITY CHECK CODEWORD HAVING LENGTH OF 16200 AND CODE RATE OF 2/15 AND 16-SYMBOL MAPPING, AND BIT INTERLEAVING METHOD USING SAME

A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 16200 and a code rate of 2/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for 16-symbol mapping. 1. A BICM reception device , comprising:a demodulator configured to perform demodulation corresponding to 16-symbol mapping;a bit deinterleaver configured to perform group-unit deinterleaving on interleaved values, the interleaved values generated after the demodulation; anda decoder configured to restore information bits by LDPC-decoding deinterleaved values generated based on the group-unit deinterleaving, the deinterleaved values corresponding to a LDPC codeword having a length of 16200 and a code rate of 2/15,wherein the group-unit deinterleaving is performed on a group basis, the size of the group corresponding to a parallel factor of the LDPC codeword.2. The BICM reception device of claim 1 , wherein the group-unit deinterleaving corresponds to interleaving performed by using permutation order claim 1 , and {'br': None, 'interleaving sequence={5 33 18 8 29 10 21 14 30 26 11 23 27 4 7 6 24 44 38 31 34 43 13 0 15 42 17 2 20 12 40 39 35 32 1 3 41 37 9 25 19 22 16 28 36}.'}, 'the permutation order corresponds to an interleaving sequence represented by the following'}3. The BICM reception device of claim 2 , wherein the 16-symbol mapping is a Non-Uniform Constellation (NUC) symbol mapping which corresponds to 16 constellations.4. The BICM reception device of claim 2 , wherein the parallel factor is 360 claim 2 , and the group includes 360 values.5. The BICM reception device of claim 4 ...

Bit interleaver for low-density parity check codeword having length of 16200 and code rate of 2/15 and 256-symbol mapping, and bit interleaving method using same

A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 16200 and a code rate of 2/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for 256-symbol mapping.

TRANSMITTING APPARATUS AND NON-UNIFORM CONSTELLATION MAPPING METHOD THEREOF

A transmitting apparatus is disclosed. The transmitting apparatus includes an encoder to perform channel encoding with respect to bits and generate a codeword, an interleaver to interleave the codeword, and a modulator to map the interleaved codeword onto a non-uniform constellation according to a modulation scheme, and the constellation may include constellation points defined based on various tables according to the modulation scheme. 2. The apparatus as claimed in claim 1 , wherein the constellation points as defined in the list comprises constellation points in one quadrant claim 1 , andwherein constellation points in remaining quadrants are obtained by indicating each constellation point a which is defined in the list as a*, −a*, and −a, respectively, * indicating complex conjugation. This is a continuation of U.S. application Ser. No. 15/726,806 filed Oct. 6, 2017, which is a continuation of U.S. application Ser. No. 14/715,817 filed on May 19, 2015, now U.S. Pat. No. 9,847,851, the disclosures of which is incorporated herein by reference in its entirety.Apparatuses and methods consistent with exemplary embodiments of the inventive concept relate to transmitting and receiving date using broadcasting, more particularly, to the design of non-uniform constellations used in a Bit Interleaved Coded Modulation (BICM) mapping bits at an output of an encoder and interleaver to complex constellations.The current broadcasting systems consistent with the Digital Video Broadcasting Second Generation Terrestrial (DVB-T2) use a Bit Interleaved and Coded Modulation (BICM) chain in order to encode bits to be transmitted. The BICM chain includes a channel encoder like a Low Density Parity Check (LDPC) encoder followed by a Bit Interleaver and a Quadrature Amplitude Modulation (QAM) mapper. The role of the QAM mapper is to map different bits output from the channel encoder and interleaved using the Bit Interleaver to QAM cells. Each cell represents a complex number having real ...

IDENTIFICATION OF DOWNLINK MESSAGES USING REPEATED TRANSMISSION

A wireless telecommunication system comprises a base station arranged to communicate messages to one or more terminal devices over a radio interface. The radio interface has a radio frame structure comprising a plurality of subframes, wherein a message may be transmitted in accordance with a first transmission scheme using transmission resources in a first number of radio subframes (e.g. one subframe) or transmitted in accordance with a second transmission scheme using transmission resources in a second number of radio subframes (e.g. with repeat transmissions in a plurality of subframes). The message is transmitted in association with an identifier to indicate a terminal device to which the message is addressed. A characteristic for the identifier, for example a value or control region search space for the identifier, is dependent on whether the message is to be transmitted in accordance with the first transmission scheme or the second transmission scheme. A terminal device to which the message is addressed determines the transmission scheme from the characteristic of the identifier and receives the message accordingly. 1. A method of operating a base station for communicating a message to one or more terminal devices in a wireless telecommunications system over a radio interface having a radio frame structure comprising a plurality of subframes , wherein the message may be transmitted in accordance with a first transmission scheme using transmission resources in a first number of radio subframes or transmitted in accordance with a second transmission scheme using transmission resources in a second number of radio subframes , wherein the second number is greater than the first number , wherein the message is associated with an identifier to indicate a terminal device to which the message is addressed , and wherein the method comprises selecting a characteristic for the identifier in dependence on whether the message is to be transmitted in accordance with the first ...

Connectivity and feedback techniques for wireless broadcast services

This disclosure provide systems, devices, apparatus and methods, including computer programs encoded on storage media, for broadcast services feedback techniques. Several broadcast connectivity and feedback techniques are described. A broadcast connectivity protocol may be used by different types of wireless communication devices (such as an access point (AP) and station (STA)) to provide or access broadcast services. A security protocol or enhancement to the broadcast connectivity protocol may provide source authentication or verification for broadcast transmissions. The broadcast services feedback techniques can enable an AP to obtain feedback from one or more STAs. In some implementations, a negative acknowledgement (NACK) scheme may be used to efficiently obtain feedback from multiple STAs. The broadcast connectivity and feedback techniques may be used by a STA that does not have a wireless association with the AP. The techniques may be useful in servicing a multiple STAs in an environment.

Feedback design for network coding termination in broadcasting

Methods, systems, and devices for wireless communications are described. A network node may identify a set of packets for broadcasting to a set of user equipment (UEs) and may transmit a set of encoded packets based on the set of packets. The network node may receive feedback from one or more of the UEs, and the feedback may indicate a number of successfully received packets of the set of encoded packets at each of the one or more UEs. Based on the feedback, the network node may transmit a second set of encoded packets to the set of UEs if the number of successfully received packets for at least one UE fails to satisfy a decodability threshold. The transmitter may continue to transmit sets of encoded packets until the feedback indicates that each UE has received a number of packets that satisfies the decodability threshold.

Method, device, and system for sending, receiving, and determining timing reference information

Embodiments of the present invention disclose a method, a device, and a system for sending, receiving, and determining timing reference information, and pertain to the communications field. The method for sending timing reference information includes: acquiring access time difference information reported by a mobile terminal; generating timing reference information according to the access time difference information, where the timing reference information includes identifier information of a timing reference cell; and sending the timing reference information to the mobile terminal. By technical means of determining one of two cells with different downlink channel timings as a timing reference cell and using the timing reference cell as a benchmark to feed back HARQ-ACK information, the present invention solves a timing problem encountered when a UE uses a same HS-DPCCH to jointly feed back two pieces of HARQ-ACK information of a serving cell and an assisting serving cell.

Sensor data segmentation and virtualization

First sensor data generated by a first of a plurality of sensors and at least second sensor data generated by at least a second of the plurality of sensors can be received by a sensor data broker executed by a processor. The sensor data broker can publish to at least a first virtual sensor the first sensor data as first published sensor data. The sensor data broker can publish to at least a second virtual sensor the second sensor data as second published sensor data.

APPARATUS FOR TRANSMITTING BROADCAST SIGNALS, APPARATUS FOR RECEIVING BROADCAST SIGNALS, METHOD FOR TRANSMITTING BROADCAST SIGNALS AND METHOD FOR RECEIVING BROADCAST SIGNALS

A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder for encoding service data, a mapper for mapping the encoded service data into a plurality of OFDM (Orthogonal Frequency Division Multiplex) symbols to build at least one signal frame, a frequency interleaver for frequency interleaving data in the at least one signal frame by using a different interleaving-seed which is used for every OFDM symbol pair comprised of two sequential OFDM symbols, a modulator for modulating the frequency interleaved data by an OFDM scheme and a transmitter for transmitting the broadcast signals having the modulated data, wherein the different interleaving-seed is generated based on a cyclic shifting value and wherein an interleaving seed is variable based on an FFT size of the modulating. 120-. (canceled)21. A method comprising:at an electronic device with one or more processors for processing broadcast signals:encoding data for one or more services of the broadcast signals;building a signal frame carrying the encoded data; generating a main sequence, a same main sequence being used for two consecutive symbols to be processed by an OFDM (Orthogonal Frequency Division Multiplexing) scheme;', 'generating a symbol offset, a value of the symbol offset being constant for the two consecutive symbols;', 'generating a sequence based on the main sequence and the symbol offset; and', 'checking a validity of address of the generated sequence to output the interleaving sequence that corresponds to one or more valid addresses;, 'frequency interleaving data in the signal frame by a interleaving sequence that applies to a symbol in the data signal, wherein the interleaving sequence is generated bymodulating frequency interleaved data by the OFDM scheme; andtransmitting broadcast signals carrying modulated data.22. The method of claim 21 , wherein when the frequency interleaving applies to a signal ...

FEEDBACK SIGNALLING FOR MULTICAST DATA TRANSMISSION

Data transmission in a multicast fashion in which retransmissions are requested by recipients sending feedback to the one sender. Receiving stations are informed about the feedback of another receiving station. This is done by mirroring the feedback of receiving stations to other receiving stations. Due to this, in case, for example, one of the mirrored feedbacks is a negative acknowledgement message, the other receiving stations are informed that it is no longer necessary to provide their feedback, since a retransmission will be initiated anyway. Advantageously, this may allow reduced interference in the direction of the feedback 1. A transmission station for point-to-multipoint data transmission to a plurality of receiving stations , the transmission station comprising:a transmitter configured to transmit data to a plurality of first receiving stations in a point-to-multipoint transmission system; a negative acknowledgement message indicating that the at least one second receiving station unsuccessfully decoded the data, and', 'a positive acknowledgement message indicating that the at the at least one second receiving station at least successfully decoded the data;, 'a receiver configured to receive a confirmation message with respect to the data from at least one second receiving station of the plurality of first receiving stations at the transmitting station, the confirmation message being at least one ofthe transmitter configured to re-transmit the confirmation message from the transmitting station to at least one third receiving station of the plurality of first receiving stations; at least logically group the first receiving stations into at least a first and a second groups of first receiving stations on the basis of the path loss values between the transmitting station and the first receiving stations, such that each group includes at least one receiving station of the plurality of first receiving stations, and wherein the path loss value of the receiving ...

Communication support for low capability devices

Methods and apparatuses for transmitting and receiving signaling, by a User Equipment (UE) with reduced processing capabilities, to conserve power are provided. A method for transmitting from a network a Physical Downlink Shared CHannel (PDSCH) to a first User Equipment (UE) from a first class of UEs or to a second UE from a second class of UEs, includes transmitting a PDSCH to the first UE using a first bandwidth unit; and transmitting a PDSCH to the second UE using a second bandwidth unit, wherein the second bandwidth unit is smaller than the first bandwidth unit.

Wireless vehicular communications involving retransmission of messages

Embodiments are directed to methods and apparatuses for wireless vehicular communications involving retransmission of messages. A method for communicating by vehicular communications circuitry of a device includes, in a wireless communications network in which a message is broadcasted by vehicular communications circuitry of a device for asynchronous receptions by other circuitry in one or more devices configured to wirelessly communicate according to a communications protocol, monitoring a channel busy ratio associated with channels in a designated range of frequency pertaining to the wireless communications network. The method further includes assessing whether to retransmit the message as a function of the channel busy ratio, and in response to the channel busy ratio being outside a threshold, retransmitting the message according to the communications protocol.

Apparatus and method for sending and receiving broadcast signals

A broadcast signal transmitter is disclosed. A broadcast signal transmitter according to an embodiment of the present invention comprises an input formatting module performing baseband formatting and outputting at least one Physical Layer Pipe (PLP) data; a BICM module error-correction processing the PLP data; a framing & interleaving module interleaving the PLP data and generating a signal frame; and a waveform generating module inserting a preamble into the signal frame and generating a broadcast signal by performing OFDM modulation.

TRANSMITTING APPARATUS AND MAPPING METHOD THEREOF

A transmitting apparatus is disclosed. The transmitting apparatus includes an encoder to perform channel encoding with respect to bits and generate a codeword, an interleaver to interleave the codeword, and a modulator to map the interleaved codeword onto a non-uniform constellation according to a modulation scheme, and the constellation may include constellation points defined based on various tables according to the modulation scheme. 2. The method as claimed in claim 1 , wherein the interleaving comprises:splitting the codeword into a plurality of bit groups; andinterleaving the plurality of bit group.3. The method as claimed in claim 1 , wherein the mapping comprises:demultiplexing the bits of the interleaved codeword into parallel streams to generate cells; andmapping the cells onto the constellation points. This application is a Continuation of application Ser. No. 14/716,283 filed May 19, 2015, the disclosure of which is incorporated herein by reference in its entirety.Apparatuses and methods consistent with exemplary embodiments of the inventive concept relate to transmitting and receiving date using broadcasting, more particularly, to the design of non-uniform constellations used in a Bit Interleaved Coded Modulation (BICM) mapping bits at an output of an encoder and interleaver to complex constellations.The current broadcasting systems consistent with the Digital Video Broadcasting Second Generation Terrestrial (DVB-T2) use a Bit Interleaved and Coded Modulation (BICM) chain in order to encode bits to be transmitted. The BICM chain includes a channel encoder like a Low Density Parity Check (LDPC) encoder followed by a Bit Interleaver and a Quadrature Amplitude Modulation (QAM) mapper. The role of the QAM mapper is to map different bits output from the channel encoder and interleaved using the Bit Interleaver to QAM cells. Each cell represents a complex number having real and imaginary part. The QAM mapper groups M bits into one cell. Each cell is ...

BIT INTERLEAVER FOR LOW-DENSITY PARITY CHECK CODEWORD HAVING LENGTH OF 16200 AND CODE RATE OF 2/15 AND 64-SYMBOL MAPPING, AND BIT INTERLEAVING METHOD USING SAME

A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 16200 and a code rate of 2/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for 64-symbol mapping. 1. A bit interleaving method , comprising:storing a low-density parity check (LDPC) codeword having a length of 16200 and a code rate of 2/15;generating an interleaved codeword by interleaving the LDPC codeword on a bit group basis, the size of the bit group corresponding to a parallel factor of the LDPC codeword; andoutputting the interleaved codeword,wherein the interleaving is performed using the following equation using permutation order:{'sub': j', 'j, 'where Xis the j-th bit group, Yis an interleaved j-th bit group, and π(j) is a permutation order for bit group-based interleaving.'}2. The bit interleaving method of claim 1 , wherein the permutation order corresponds to an interleaving sequence represented by the following{'br': None, 'interleaving sequence={7 11 4 38 19 25 2 43 15 26 18 14 9 29 44 32 0 5 35 10 1 12 6 36 21 33 37 34 3 31 20 16 40 23 41 22 30 39 13 24 17 42 28 8 27},'}wherein the interleaving sequence is for a case where 64-symbol mapping is employed.3. The bit interleaving method of claim 2 , wherein the 64-symbol mapping is a Non-Uniform Constellation (NUC) symbol mapping which corresponds to 64 constellations.4. The bit interleaving method of claim 3 , wherein the parallel factor is 360 claim 3 , and the bit group includes 360 bits.5. The bit interleaving method of claim 4 , wherein the LDPC codeword is represented by (u claim 4 , u claim 4 , . . . claim 4 , u) ( ...

Multicast mechanism for wireless devices

This disclosure describes methods, apparatus, and systems related to a multicast mechanism. A device may determine a multicast session with one or more multicast devices. The device may determine one or more multicast data frames. The device may determine a conditional block acknowledgment request associated with the one or more multicast data frames. The device may cause to send the one or more data frames to at least one of the one or more multicast devices. The device may cause to send the conditional block acknowledgment request to the one or more multicast devices.

Broadcasting of Digital Video to Mobile Terminals

A method includes processing error correction encoded data by a first processing chain of a transmitter. The processing includes interleaving a first portion of the error correction encoded data with respect to a first interleaving period to generate a first output signal. Interleaving the first portion includes de-multiplexing the first portion among multiple branches having respective delays in accordance with a distribution order and re-multiplexing delayed data from the branches to form the first output signal. The method includes processing the error correction encoded data by a second processing chain of the transmitter without use of interleaving to generate a second output signal. The method includes multiplexing the first output signal and the second output signal into a multiplexed stream. The method also includes transmitting the multiplexed stream from the transmitter over a communication channel to a receiver. 1. A method comprising:processing error correction encoded data by a first processing chain of a transmitter, the processing including interleaving a first portion of the error correction encoded data with respect to a first interleaving period to generate a first output signal, wherein the interleaving the first portion comprises de-multiplexing the first portion among multiple branches having respective delays in accordance with a distribution order and re-multiplexing delayed data from the branches to form the first output signal;processing the error correction encoded data by a second processing chain of the transmitter without use of interleaving to generate a second output signal;multiplexing the first output signal and the second output signal into a multiplexed stream; andtransmitting the multiplexed stream from the transmitter over a communication channel to a receiver.2. The method of claim 1 , further comprising encoding input data with an error correction code encoder of the transmitter to produce the error correction encoded data.3. ...

APPARATUS FOR TRANSMITTING BROADCAST SIGNALS, APPARATUS FOR RECEIVING BROADCAST SIGNALS, METHOD FOR TRANSMITTING BROADCAST SIGNALS AND METHOD FOR RECEIVING BROADCAST SIGNALS

A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder for encoding DP (Data Pipe) data corresponding to each of a plurality of DPs, a mapper for mapping the encoded DP data onto constellations, a time interleaver for time interleaving the mapped DP data at DP level, a frame builder for building at least one signal frame including the time interleaved DP data, a modulator for modulating data in the built at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter for transmitting the broadcast signals having the modulated data. 114-. (canceled)15. A method for transmitting broadcast signals , the method comprising:encoding service data;mapping the encoded service data to output cells, wherein the cells are included in at least one forward error correction (FEC) block;time interleaving the mapped service data, wherein the time interleaving includes:a column-wise writing the at least one FEC block into at least one time interleaving (TI) block,wherein the at least one TI block includes at least one virtual FEC block,wherein a number of FEC blocks varies in TI blocks; anddiagonal-wise reading cells of the at least one TI block based on a diagonal-wise reading parameter,wherein cells in the at least one virtual FEC block are skipped during the diagonal-wise reading based on cell position;building at least one signal frame including the time interleaved service data;modulating data in the built at least one signal frame by an Orthogonal Frequency Division Multiplex (OFDM) scheme; andtransmitting the broadcast signals having the modulated data.16. The method of claim 15 , wherein the method further includes:wherein the diagonal-wise reading is performed by calculating the cell position based on row and column indexes of TI memory, andwherein slope for the diagonal wise reading is based on the diagonal-wise reading parameter.17. The ...

Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcase signals and method for receiving broadcast signals

A method and an apparatus for transmitting broadcast signals thereof are disclosed. The method for transmitting broadcast signals includes processing input streams into BB frames in PLPs; encoding data of the PLPs; building at least one signal frame by mapping the encoded data of the PLPs; and modulating data in the built signal frame by OFDM method and transmitting the broadcast signals having the modulated data, wherein at least one of the BB frames includes a stuffing field and a first indicator describing whether the stuffing field is included in the BB frame.

TRANSMITTING APPARATUS AND MAPPING METHOD THEREOF

A transmitting apparatus is disclosed. The transmitting apparatus includes an encoder to perform channel encoding with respect to bits and generate a codeword, an interleaver to interleave the codeword, and a modulator to map the interleaved codeword onto a non-uniform constellation according to a modulation scheme, and the constellation may include constellation points defined based on various tables according to the modulation scheme. This application is a Continuation of application Ser. No. 15/705,603, filed Sep. 15, 2017, which is a Continuation of application Ser. No. 14/716,283 filed May 19, 2015, now U.S. Pat. No. 9,787,422, issued Oct. 10, 2017, the disclosures of which are incorporated herein by reference in their entirety.Apparatuses and methods consistent with exemplary embodiments of the inventive concept relate to transmitting and receiving date using broadcasting, more particularly, to the design of non-uniform constellations used in a Bit Interleaved Coded Modulation (BICM) mapping bits at an output of an encoder and interleaver to complex constellations.The current broadcasting systems consistent with the Digital Video Broadcasting Second Generation Terrestrial (DVB-T2) use a Bit Interleaved and Coded Modulation (BICM) chain in order to encode bits to be transmitted. The BICM chain includes a channel encoder like a Low Density Parity Check (LDPC) encoder followed by a Bit Interleaver and a Quadrature Amplitude Modulation (QAM) mapper. The role of the QAM mapper is to map different bits output from the channel encoder and interleaved using the Bit Interleaver to QAM cells. Each cell represents a complex number having real and imaginary part. The QAM mapper groups M bits into one cell. Each cell is translated into a complex number. M, which is the number of bits per cell, is equal to 2 for QPSK, 4 for 16QAM, 6 for 64QAM, and 8 for 256. It is possible to use a higher QAM size in order to increase a throughput. For example: 1K QAM is a constellation ...

Semi persistent scheduling physical downlink shared channels for new radio multicast

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration indicating a plurality of semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) communications associated with a multicast service. The UE may receive, based at least in part on determining that a reception condition is satisfied, an SPS PDSCH communication of the plurality of SPS PDSCH communications. Numerous other aspects are provided.

ACK/NACK Messaging in a Single Frequency Network

A method of providing feedback from a plurality of base stations of a single frequency network to a user equipment device to indicate if a data transmission has been received successfully, wherein a positive acknowledgement of successful receipt is transmitted using a first feedback resource and a negative acknowledgement of unsuccessful receipt is transmitted using a second feedback resource, the first and second feedback resources being mutually orthogonal.

Method and apparatus for transmitting/receiving wireless signal in wireless communication system

According to an embodiment of the present invention a user equipment (UE) may receive, in a first search space set, first downlink control information (DCI) that schedules a first physical downlink control channel (PDSCH) based on a first transmission configuration index (TCI) value and receive, in a second search space set of the plurality of search space sets, second DCI that schedules a second PDSCH based on a second TCI value. The UE may determine that a transport block (TB) in the second PDSCH is re-transmission of a TB in the first PDSCH, based on that the first DCI and the second DCI indicates a same hybrid automatic repeat request (HARQ) process identifier (ID), and the first DCI and the second DCI indicates a same new data indicator (NDI) value, even if the first TCI value associated with the first PDSCH is different from the second TCI value associated with the second PDSCH.

Multi-acked multicast protocol

Multicast transmissions do not allow for individual receivers to acknowledge that data was received by each receiver in the network. This is not acceptable for isochronous systems that require specific levels of QoS for each device. A multimedia communications protocol supports using multicast transmissions (one-to-many) in multimedia isochronous systems. A transmitter establishes a Multi-ACKed Multicast protocol within which a group of receiving devices can acknowledge the multicast transmission during a multi-acknowledgment period.

Communication method and apparatus

This application provides a communication method and apparatus used for the internet of vehicles, for example, vehicle to everything (V2X), Long Term Evolution-Vehicle (LTE-V), and vehicle-to-vehicle communication (V2V). The method includes: a first terminal apparatus generates, based on indication information such as an aggregation level of a control channel or a demodulation reference sequence configuration of a data channel, a demodulation reference sequence of another control channel, and sends the demodulation reference sequence to a second terminal apparatus. The second terminal apparatus can obtain the indication information in a process of detecting the demodulation reference sequence of the other control channel, to demodulate the control channel or the data channel.

Multicast Feedback Configuration Method and Apparatus

This application relates to the field of communication technologies, especially to V2X, intelligent driving, intelligent and connected vehicles, and the like. The method includes: sending, by a first terminal, first information to a second terminal, where the first information includes information indicating a feedback manner of first data, the first data is a data packet sent by the first terminal to the second terminal, the feedback manner is a first feedback manner or a second feedback manner, the first feedback manner is that the second terminal feeds back, to the first terminal, only acknowledgement information indicating that the data packet fails to be received, and the second feedback manner is that the second terminal feeds back, to the first terminal, acknowledgement information indicating that the data packet is successfully received or fails to be received. The method is applied to a multicast transmission process.

NEW RADIO VEHICLE-TO-ANYTHING NEGATIVE ACKNOWLEDGEMENT BASED MULTICAST

Methods, systems, and devices for wireless communication are described. One method for wireless communication at a first device includes receiving a multicast packet from a second device, decoding control header information in the received multicast packet, determining that a decoding procedure associated with a payload of the received multicast packet is unsuccessful and transmitting a negative acknowledgement (NACK) based at least in part on the determining. The method also includes retrieving a list of transmitter identifiers. In some cases, transmitting the NACK is based at least in part on the list of transmitter identifiers. The method further includes determining a transmitter identifier associated with the multicast packet and determining that the transmitter identifier is present in the list of transmitter identifiers. 1. A method for wireless communication at a first device , comprising:receiving a multicast packet from a second device;decoding control header information in the received multicast packet;determining that a decoding procedure associated with a payload of the received multicast packet is unsuccessful; andtransmitting a negative acknowledgement (NACK) based at least in part on the determining.2. The method of claim 1 , further comprising:retrieving a list of transmitter identifiers, wherein transmitting the NACK is based at least in part on the list of transmitter identifiers.3. The method of claim 2 , further comprising:determining a transmitter identifier associated with the multicast packet based at least in part on the decoded control header information; anddetermining that the transmitter identifier is present in the list of transmitter identifiers, wherein transmitting the NACK is based at least in part on the transmitter identifier being present in the list of transmitter identifiers.4. The method of claim 2 , wherein:the list of transmitter identifiers is based at least in part on one or more transmitters located within a determined ...

TRANSMISSION METHOD, TRANSMITTER APPARATUS, RECEPTION METHOD AND RECEIVER APPARATUS

Transmission quality is improved in an environment in which direct waves dominate in a transmission method for transmitting a plurality of modulated signals from a plurality of antennas at the same time. All data symbols used in data transmission of a modulated signal are precoded by hopping between precoding matrices so that the precoding matrix used to precode each data symbol and the precoding matrices used to precode data symbols that are adjacent to the data symbol in the frequency domain and the time domain all differ. A modulated signal with such data symbols arranged therein is transmitted. 116-. (canceled)17. A transmission method comprising:applying modulation to a first data signal and a second data signal using any one of a plurality of modulation schemes to generate first mapped symbols and second mapped symbols, the first data signal and the second data signal each including a video signal or an audio signal, the video signal being to be displayed on a monitor of a reception device, and the audio signal being to be output from a speaker of the reception device;applying phase shift to the first mapped symbols and the second mapped symbols, using a plurality of phase shift coefficients that are regularly switched between a determined number of mapped symbols;applying insertion of a plurality of pilot symbols to the first mapped symbols and the second mapped symbols;applying an Orthogonal Frequency-Division Multiplexing (OFDM) symbol generation process to the first mapped symbols and the second mapped symbols to generate a first OFDM symbol, a second OFDM symbol, a third OFDM symbol, and a fourth OFDM symbol; andapplying transmission from a first transmission branch to the first OFDM symbol at a first frequency and at a first time, and to the third OFDM symbol at the first frequency and at a second time,applying transmission from a second transmission branch to the second OFDM symbol at the first frequency and at the first time, and to the fourth OFDM ...

Telegram splitting transmission method for bidirectional networks

A data transmitter is provided, having: a generator for generating transmission data packets, configured to split a first data packet into at least three transmission data packets, each of the transmission packets being shorter than the first data packet, the generator being configured to channel-encode the at least three transmission packets such that only a portion thereof is required for decoding the first data packet; a transmission element for transmitting data packets, configured to transmit the at least three transmission packets in a frequency channel via a communications channel with a time gap; a monitor element for monitoring the frequency channel, configured to recognize an interference or transmission of a further data transmitter in the frequency channel; the transmission element being configured not to transmit via the communications channel a packet, waiting for transmission, of the at least three transmission packets if an interference or transmission from a further data transmitter is recognized by the monitor element at the time of transmitting the transmission data packet. 1. A data transmitter comprising:a generator for generating transmission data packets, configured to split a first data packet into at least three transmission data packets, wherein each of the at least three transmission data packets is shorter than the first data packet, the generator for generating data packets being configured to channel-encode the at least three transmission data packets such that only a portion of the transmission data packets is required for decoding the first data packet;a transmission element for transmitting data packets, configured to transmit the at least three transmission data packets in a frequency channel via a communications channel with a time gap;a monitor element for monitoring the frequency channel, configured to recognize an interference or transmission of a further data transmitter in the frequency channel;wherein the transmission element ...

TELEGRAM SPLITTING TRANSMISSION METHOD FOR BIDIRECTIONAL NETWORKS

A data transmitter is provided, having: a generator for generating transmission data packets, configured to split a first data packet destined for a first data receiver into at least two transmission data packets, wherein each of the transmission data packets destined for the first data receiver is shorter than the first data packet; a transmission element for transmitting data packets, configured to transmit the at least two transmission data packets destined for the first data receiver via a communications channel with a time gap; wherein the transmission element for transmitting data packets is configured to transmit at least one further transmission data packet to the first data receiver or a second data receiver in the time gap between the at least two transmission data packets destined for the first data receiver. 1. A data transmitter comprising:a generator for generating transmission data packets, configured to split a first data packet destined for a first data receiver into at least two transmission data packets, wherein each of the transmission data packets destined for the first data receiver is shorter than the first data packet;a transmission element for transmitting data packets, configured to transmit the at least two transmission data packets destined for the first data receiver via a communications channel with a time gap;wherein the transmission element for transmitting data packets is configured to transmit at least one further transmission data packet to the first data receiver or a second data receiver in the time gap between the at least two transmission data packets destined for the first data receiver.2. The data transmitter in accordance with claim 1 , wherein the generator for generating transmission data packets is configured to split a second data packet destined for the second data receiver into at least two transmission data packets claim 1 , wherein each of the transmission data packets destined for the second data receiver is shorter ...

BROADCAST TRANSMISSION APPARATUS, OPERATION METHOD OF BROADCAST TRANSMISSION APPARATUS, BROADCAST RECEPTION APPARATUS, AND OPERATION METHOD OF BROADCAST RECEPTION APPARATUS

A method of transmitting a broadcast signal includes generating, by a broadcast transmitter, a service and service signaling information for acquiring the service and components of the service; generating, by the broadcast transmitter, signaling data for rapid service scan, the signaling data including protection information for indicating whether a component of the service is protected and information for identifying where the service signaling information is transmitted and hidden information for indicating whether the service is intended for testing or proprietary use; generating, by the broadcast transmitter, physical layer pipes (PLPs) including the service, the service signaling information and the signaling data; and transmitting, by the broadcast transmitter, a broadcast signal carrying a signal frame including the PLPs, wherein the service signaling information includes a service identifier for referencing a service related to the signaling data. 1. A method of transmitting a broadcast signal , the method comprising:generating, by a broadcast transmitter, a service and service signaling information for acquiring the service and components of the service;generating, by the broadcast transmitter, signaling data for rapid service scan, the signaling data including protection information for indicating whether a component of the service is protected and information for identifying where the service signaling information is transmitted and hidden information for indicating whether the service is intended for testing or proprietary use;generating, by the broadcast transmitter, physical layer pipes (PLPs) including the service, the service signaling information and the signaling data; andtransmitting, by the broadcast transmitter, a broadcast signal carrying a signal frame including the PLPs,wherein the service signaling information includes a service identifier for referencing a service related to the signaling data.2. The method of claim 2 ,wherein the signaling ...

Scheduling broadcast or multicast communications for new radio

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a broadcast or a multicast (broadcast/multicast) scheduling configuration for a physical downlink control channel (PDCCH), the broadcast/multicast scheduling configuration identifying, for receiving broadcast/multicast communications, at least one of: a plurality of radio network temporary identifiers that are respectively associated with a plurality of beams, or one or more bandwidth parts. The UE may receive a broadcast/multicast communication associated with a broadcast/multicast control channel or a broadcast/multicast traffic channel via a physical downlink shared channel in accordance with the broadcast/multicast scheduling configuration for the PDCCH. Numerous other aspects are provided.

MULTI-DESTINATION BURST PROTOCOL

Multicast transmissions are efficient but do not allow for individual acknowledgement that the data was received by each receiver. This is not acceptable for isochronous systems that require specific levels of QoS for each device. A multimedia communications protocol is provided that uses a novel multi-destination burst transmission protocol in multimedia isochronous systems. The transmitter establishes a bi-directional burst mode for multicasting data to multiple devices and receiving Reverse Start of Frame (RSOF) delimiters from each multicast-destination receiver in response to multiple SOF delimiters, thus providing protocol-efficient multi-destination acknowledgements. 1. A method for transmitter operation , comprising:a) making of a multicast transmission to a multicast group of receiving devices using an initial Start of Frame (SOF) that includes a frame length of a first bidirectional burst pseudo contention free period during which said transmitter communicates without contention;wherein the initial SOF further includes an identification of a first receiving device in the multicast group that is allowed to transmit in a first pseudo contention free period;b) receiving from the first receiving device an acknowledgement of status of received multicast MAC Protocol Data Unit (MPDU) data;c) transmitting an additional SOF before an end of the frame length of the initial SOF, wherein the additional SOF is addressed to another receiving device in the multicast group;d) receiving from the another receiving device an acknowledgement of status of received multicast MPDU data; andrepeating the steps c) and d) until: a last one of the receiving devices in the multicast group has been transmitted the additional SOF and acknowledgement is received.2. The method of claim 1 , wherein the acknowledgement is a Reverse SOF (RSOF) delimiter.3. The method of claim 1 , further comprising terminating the first bidirectional burst pseudo contention free period in response to ...

CUSTOMER BANDWIDTH RE-DISTRIBUTION IN POINT-TO-MULTIPOINT ACCESS

A system for redistributing bandwidth among a plurality of customer premises equipments (CPEs), wherein each of the plurality of CPEs have an initial bandwidth allocation, comprises a distribution point unit (DPU). The DPU is configured to detect an excess available bandwidth condition of one of the plurality of CPEs, detect a need for additional bandwidth condition of another one of the plurality of CPEs, communicate a bandwidth re-allocation request and a set of granted tones to the CPE having the detected excess available bandwidth condition and to the CPE having the detected additional bandwidth condition, and communicate a time instant at which the set of granted tones should be switched from the CPE having the detected excess available bandwidth condition to the CPE having the detected additional bandwidth condition. 1. A system for redistributing bandwidth among a plurality of customer premises equipments (CPEs) that are configured to operate in an initial bandwidth allocation , the system comprising:a first CPE of the plurality of CPEs configured to operate in a first initial set of tones based on the initial bandwidth allocation;a second CPE of the plurality of CPEs configured to operate in a second initial set of tones based on the initial bandwidth allocation; determine an excess available bandwidth condition of the first CPE;', 'determine an insufficient available bandwidth condition of the second CPE;', 'determine a bandwidth re-allocation based on the excess available bandwidth condition of the first CPE and the insufficient available bandwidth condition of the second CPE; and', 'communicate, to the first CPE and the second CPE, a bandwidth allocation request and a plurality of granted tones to dynamically generate the bandwidth re-allocation among the first CPE and the second CPE from the initial bandwidth allocation., 'a distribution point unit (DPU), coupled to the first CPE and the second CPE via a single or multiple lines, respectively, as a point ...

Method for Multicasting a Plurality of Data Packets to a Plurality of Receivers

The disclosure relates to a transmission node and method for multicasting a plurality of original data packets to a plurality of receivers in a cell of a cellular communications system. The method comprises the step of multicasting a set of original data packets and a single network coded data packet associated with the set of original data packets to the plurality of receivers in the cell. The set of original data packets consists of a number of original data packets of the plurality of original data packets and the number of original data packets in the set of original data packets is dependent on a multicast data packet loss probability for transmitting data packets to one or more of the plurality of receivers in the cell. The single network coded data packet is a linear combination of two or more original data packets in the set of original data packets. 1. A method for multicasting a plurality of original data packets to a plurality of receivers in a cell of a cellular communications system , the method comprising the steps in the cellular communications system of:multicasting a set of original data packets and a single network coded data packet associated with the set of original data packets to the plurality of receivers in the cell,wherein the set of original data packets consists of a number of original data packets of the plurality of original data packets;wherein the number of original data packets in the set of original data packets is dependent on a multicast data packet loss probability for transmitting data packets to one or more of the plurality of receivers in the cell, andwherein the single network coded data packet is a linear combination of two or more original data packets in the set of original data packets.2. The method according to claim 1 , wherein the single network coded data packet is a linear combination of the original data packets in the set of original data packets claim 1 , such as a bitwise XOR combination of each of the bits of ...

LAYERED DATA TRANSMISSIONS WITH GEOGRAPHICAL LOCATION DEPENDENT CONTROL INFORMATION

A base station transmits a layered data signal to multiple devices that are in close proximity to each other where the layered data signal includes at least first data on a first data layer directed to a first device and second data on a second data layer directed to a second device. The base station also transmits a single control message to both devices where the control message comprises location dependent control information directed to both devices. The control message also comprises data layer control information arranged in multiple fields where data layer control information in a field is associated with a device and allows the associated device to recover the data from a data layer assigned to the device. 1. A method comprising:transmitting, to a first device and a second device, a data layered signal comprising first device data on a first data layer and second device data on a second data layer;transmitting, to the first device and the second device, a control message comprising:geographic location dependent control information applying to reception of the data signal by the first device and the second device; anddata layer control information arranged in a first device field and a second device field, the data layer control information in the first device field applying to recovery of the first device data from the first data layer, the data layer control information in the second device field applying to recovery of the second device data from the second data layer.2. The method of claim 1 , further comprising applying layered modulation to the first device data and to the second device data to generate the first data layer and the second data layer.3. The method of claim 2 , wherein the data layer control information comprises a first modulation order for the first data layer and a second modulation order for the second data layer.4. The method of further comprising:encoding information bits of the first device data with a first coding rate to generate ...

FEEDBACK INFORMATION SENDING APPARATUS AND METHOD, AND FEEDBACK INFORMATION RECEIVING APPARATUS AND METHOD

A method comprises: determining an uplink shared resource and a demodulation reference signal (DM-RS) that are of user equipment (UE); sending uplink data by using the uplink shared resource, wherein the uplink data comprises an identifier and the DM-RS that are of the UE; calculating an agreed feedback location, wherein the agreed feedback location is obtained according to a resource location of the uplink shared resource and the DM-RS; calculating an offset of the UE, wherein the offset of the UE is obtained according to the identifier of the UE; and receiving acknowledgement information (ACK) at a resource location of a downlink resource, wherein the resource location of the downlink resource is indicated by a combination of the agreed feedback location and the offset. According to the method, so that each UE is clear about whether the uplink data of the UE is successfully sent. 1. A base station , wherein the base station comprises a processor , a memory , and a transceiver , the memory is configured to store at least one instruction , and as configured , the instruction is executed by the processor;the processor is configured to allocate a same uplink shared resource and a same demodulation reference signal (DM-RS) to m user equipments (UEs), wherein m≥2;the processor is further configured to control the transceiver to receive uplink data by using the DM-RS, wherein the uplink data comprises an identifier of UE, identifiers of different UEs represent the different UEs, and the UE represented by the identifier of the UE is at least one of the m UEs;the processor is further configured to calculate an agreed feedback location, wherein the agreed feedback location is obtained according to a resource location of the uplink shared resource and the DM-RS;the processor is further configured to calculate an offset of the UE, wherein the offset of the UE is obtained according to the identifier of the UE; andthe processor is further configured to control the transceiver ...

METHODS AND APPARATUS FOR ACKNOWLEDGMENT OF MULTI-USER UPLINK WIRELESS TRANSMISSIONS

Methods and apparatus for multiple user uplink are provided. In one aspect, a method for wireless communication includes receiving, via a first device, a first wireless message granting permission for the first device to transmit a message during a transmission opportunity, the first wireless message being transmitted to the first device at least partially concurrently with a transmission of at least a portion of a second wireless message addressed to a second device, the first wireless message being received over a first spatial stream and the second wireless message being transmitted over a second spatial stream; and transmitting, via the first device, a third message to a third device during the transmission opportunity at least partially concurrently with a transmission of a fourth message by the second device to the third device. 1. A method of wireless communication , comprising:receiving, via a first device, a first wireless message granting permission for the first device to transmit a message during a transmission opportunity, the first wireless message being transmitted to the first device at least partially concurrently with a transmission of at least a portion of a second wireless message addressed to a second device, the first wireless message being received over a first spatial stream and the second wireless message being transmitted over a second spatial stream; andtransmitting, via the first device, a third message to a third device during the transmission opportunity at least partially concurrently with a transmission of a fourth message by the second device to the third device.2. The method of claim 1 , further comprising:receiving, via the first device, a fifth message; anddecoding the fifth message to determine whether the first device should initiate transmission during the transmission opportunity at a particular time, wherein the transmission of the third message is initiated at the particular time based on the fifth message.3. The method of ...

METHODS AND APPARATUS FOR MULTIPLE USER UPLINK

Methods and apparatus for multiple user uplink are provided. In one aspect, a method for wireless communication is provided. The method includes receiving a trigger frame from an access point, the trigger frame being transmitted to two or more stations and indicating an uplink transmission opportunity. The trigger frame further includes a request for the two or more stations to concurrently transmit uplink data at a specific time. The method includes transmitting uplink data at the specific time to the access point concurrently with another of the two or more stations transmitting uplink data to the access point. 1. An apparatus for wireless communication comprising:a receiver configured to receive a trigger frame from an access point, the trigger frame being transmitted to two or more stations and indicating an uplink transmission opportunity, the trigger frame further comprising a request for the two or more stations to concurrently transmit uplink data at a specific time; anda transmitter configured to transmit uplink data at the specific time to the access point concurrently with another of the two or more stations transmitting uplink data to the access point.2. The apparatus of claim 1 , wherein the uplink transmission opportunity has a common duration for each transmission of the uplink data.3. The apparatus of claim 1 , wherein the specific time is communicated based on a short interframe space (SIFS) or a point interframe space (PIFS) time after the end of the reception of the trigger frame.4. The apparatus of claim 1 , wherein the transmitter is further configured to transmit a clear to send (CTS) message having a scrambling sequence at a time after receiving the trigger frame and before the transmitting of the uplink data claim 1 , the scrambling sequence being the same as a scrambling sequence of a clear to send (CTS) message transmitted by the another of the two or more stations.5. The apparatus of claim 1 , wherein the trigger frame comprises a physical ...

PHYSICAL LAYER PROTOCOL DATA UNIT FORMAT APPLIED WITH SPACE TIME BLOCK CODING IN A HIGH EFFICIENCY WIRELESS LAN

The present invention relates to a method and apparatus for transmitting and receiving signals using a Physical layer Protocol Data unit (PPDU) format to which Space-Time Block Coding (STBC) is applied in a Wireless Local Area Network (WLAN). According to one aspect of the present invention, a method for transmitting data to a plurality of Stations (STAs) on a transmission channel by an Access Point (AP) in a WLAN may be provided. The transmission channel may be divided into a plurality of subchannels allocated to the plurality of STAs. The method may include generating a High Efficiency-Long Training Field (HE-LTF) field having a length determined based on whether Space-Time Block Coding (STBC) is applied to the plurality of subchannels, and transmitting a Physical layer Protocol Data Unit (PPDU) frame including the HE-LTF field and a plurality of data units for the plurality of STAs to the plurality of STAs. 1. A method for transmitting data to a plurality of Stations (STAs) on a transmission channel by an Access Point (AP) in a Wireless Local Area Network (WLAN) , the transmission channel being divided into a plurality of subchannels allocated to the plurality of STAs , the method comprising:generating a High Efficiency-Long Training Field (HE-LTF) field having a length determined based on whether Space-Time Block Coding (STBC) is applied to the plurality of subchannels; andtransmitting, to the plurality of STAs, a Physical layer Protocol Data Unit (PPDU) frame including the HE-LTF field and a plurality of data units for the plurality of STAs.2. The method according to claim 1 , wherein the HE-LTF field includes one or more HE-LTF elements for each of the plurality of subchannels claim 1 , and the number of HE-LTF elements transmitted on each of the plurality of subchannels is determined according to the number of space-time streams determined based on whether STBC is applied to each of the subchannel.3. The method according to claim 2 , wherein the number of HE- ...

Feedback Signaling Management

According to an example aspect of the present invention, there is provided an apparatus including a memory configured to store received information, and at least one processing core configured to determine a quality level at which the received information was received, to select, based at least partly on the quality level, a feedback resource, and to decide on causing transmission of feedback on the selected feedback resource. 1. An apparatus comprising:a memory configured to store received information;at least one processing core configured to determine a quality level at which the received information was received, to select, based at least partly on the quality level, a feedback resource, and to decide on causing transmission of feedback on the selected feedback resource.2. The apparatus according to claim 1 , wherein the selected feedback resource comprises at least one of a time resource claim 1 , a frequency resource claim 1 , and a code.3. The apparatus according to claim 1 , wherein the at least one processing core is configured to select at least one of;the feedback resource based at least partly on a mapping from a set of quality level ranges to a set of feedback resources; oran earlier feedback resource responsive to the quality level being lower, and a later feedback resource responsive to the quality level being higher.4. (canceled)5. The apparatus according to claim 3 , wherein the at least one processing core is configured to perform at least one of the following:select an earliest feedback resource responsive to the quality level being less than a lowest threshold quality level; andnot send a feedback responsive to the quality level being higher than a highest threshold quality level.6. The apparatus according to claim 1 , wherein the at least one processing core is configured to cause the transmission of the feedback using a contention-based mechanism.7. The apparatus according to claim 6 , wherein the at least one processing core is configured to ...

COMMUNICATION METHOD, APPARATUS AND SYSTEM FOR MULTIPLE ACCESS POINTS

Embodiments of the present invention provide a communication method, apparatus and system for multiple access points, which relate to a field of communication and support error recovery when multiple sending terminals and multiple receiving terminals transmit data together, so as to guarantee reliability of data transmission and improve throughput of system. The method includes: simultaneously sending, by a primary sending terminal and a secondary sending terminal, data corresponding to each receiving terminal to each receiving terminal through a shared channel; sending, by the primary sending terminal, BAR corresponding to the data to each receiving terminal; receiving, by the primary sending terminal, BA corresponding to the BAR and sent by each receiving terminal; and if the BA indicates that the data are correctly received by each receiving terminal, clearing the data cached in the primary sending terminal, and if the BA indicates that the data is not correctly received by each receiving terminal, retransmitting data which is not correctly received, and clearing correctly received data cached in the primary sending terminal. 1. A communication system , comprising a primary sending terminal , at least one secondary sending terminal sharing a channel with the primary sending terminal , at least one first receiving terminal associated with the primary sending terminal and at least one second receiving terminal associated with the secondary sending terminal , wherein ,the primary sending terminal is configured to:send first data corresponding to each first receiving terminal to the each first receiving terminal respectively;send a first block acknowledgement request (BAR) corresponding to the first data to the each first receiving terminal respectively;receive a first block acknowledgement (BA) corresponding to the first BAR, which is sent by the each first receiving terminal respectively; andif the first BA indicates that the first data is not correctly received by ...

Beam information for independent links

Various aspects of the disclosure relate to beam information for independent links. For example, beam information for one link may be sent on at least one other link. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, one link can indicate beam switching for at least one other link. In some scenarios, one link can indicate link recovery for at least one other link. In some scenarios, one link can indicate link failure for at least one other link.

Communication device and a method therein for determining a contention window size in a communication network

The disclosed embodiments relate to a method performed by an apparatus and also relate to an apparatus. The method includes transmitting to a communication device a burst including a subframe; receiving from the communication device a HARQ values associated with the subframe; and determining a random backoff contention window size based on the received HARQ values and also based on previously unused HARQ feedbacks. The apparatus is configured to perform the method steps described above.

RADIO COMMUNICATION SYSTEM, RADIO STATION, RADIO TERMINAL, COMMUNICATION CONTROL METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM

A radio terminal () can perform carrier aggregation using a first cell () of a first radio station () and a second cell () of a second radio station (). The first radio station () performs, with the radio terminal (), radio resource control for the first cell () and the second cell () in order to perform the carrier aggregation. At least one of the second radio station () and the radio terminal () is configured to transmit, to the first radio station (), information about a problem occurring in a radio link in the second cell () between the second radio station () and the radio terminal () while the carrier aggregation of the first cell () and the second cell () is being performed. 164-. (canceled)65. A radio terminal comprising:a memory storing instructions;at least one processor configured to process the instructions to perform Dual Connectivity by using a first cell operated by a first radio station and a second cell operated by a second radio station;a first timer used to detect a radio link failure in the first cell;a second timer, which is different from the first timer, used to detect a radio link failure in the second cell, wherein receive first information of Radio Resource Configuration from the first radio station in the first cell,', 'receive second information of Radio Resource Configuration from the first radio station in the second cell via the second radio station,', 'detect the radio link failure in the second cell using the second timer and the second information, and', Radio Resource Control (RRC) signaling for the first cell and the second cell is managed by the first radio station, and', 'the information about the radio link failure in the second cell includes a failure type to which expiry of the second timer is set, upon detection of the radio link failure in the second cell, wherein the information explicitly indicates that the second timer expired., 'transmit, to the first radio station, information about the radio link failure in the second ...

BROADCAST SIGNAL FRAME GENERATION DEVICE AND BROADCAST SIGNAL FRAME GENERATION METHOD USING BOUNDARY OF PHYSICAL LAYER PIPES OF CORE LAYER

An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling time interleaver information corresponding to the time interleaver, the time interleaver uses one of time interleaver groups, and a boundary between the time interleaver groups is a boundary between Physical Layer Pipes (PLPs) of a core layer corresponding to the core layer signal. 1. A broadcast signal reception apparatus , comprising:a time deinterleaver configured to perform time deinterleaving on a received signal corresponding to a broadcast signal frame, the broadcast signal frame including a preamble for signaling time interleaver information corresponding to a time interleaver;a core layer BICM decoder configured to restore core layer data corresponding to the broadcast signal frame;an enhanced layer symbol extractor configured to extract enhanced layer symbols by performing cancellation corresponding to the core layer data; andan enhanced layer BICM decoder configured to restore enhanced layer data corresponding to the enhanced layer symbols,wherein the time interleaver corresponds to one of time interleaver groups, and a boundary between time interleaver groups is a boundary between Physical Layer Pipes (PLPs) of a core layer corresponding to the core layer signal.2. The broadcast signal reception apparatus of claim 1 , wherein the time interleaver information is signaled on the basis of the core layer.3. ...

METHOD FOR TRANSMITTING BROADCAST SIGNALS, APPARATUS FOR TRANSMITTING BROADCAST SIGNALS, METHOD FOR RECEIVING BROADCAST SIGNALS AND APPARATUS FOR RECEIVING BROADCAST SIGNALS

A method for transmitting a broadcast signal in a digital broadcast transmitter, the method including generating components of a service; generating first signaling information including session instance description information for at least one Real-Time Object Delivery over Unidirectional Transport (ROUTE) session and at least one Layered Coding Transport (LCT) channel in which the components of the service are delivered, wherein the session instance description information includes first source Internet Protocol (IP) address information of the at least one ROUTE session, first destination IP address information of the at least one ROUTE session, first destination port information of the at least one ROUTE session, and transport session identification information for the at least one LCT channel; generating second signaling information which is used for acquiring the first signaling information, wherein the second signaling information includes information for indicating a channel number of the service, wherein the second signaling information further includes bootstrap information and signaling transport mode information for indicating a type of delivery protocol of the first signaling information, and further the bootstrap information changes depending on the signaling transport mode information, and wherein the bootstrap information included in the second signaling information includes second source IP address information, second destination IP address information, and second destination port information for the first signaling information, wherein the at least one LCT channel is acquired based on the bootstrap information included in the second signaling information; and transmitting the broadcast signal including the components of the service, the first signaling information, and the second signaling information based on at least one Physical Layer Pipe (PLP). 1. A method for transmitting a broadcast signal in a digital broadcast transmitter , the method ...

User equipment

A user equipment includes a transmitter that performs a groupcast transmission to a group including a plurality of units of user equipment; a receiver that receives a hybrid automatic repeat request (HARQ) response to the groupcast transmission; and a controller that performs retransmission control for the groupcast based on received power that is measured on a channel for receiving the HARQ response.

APPARATUS AND METHOD FOR SENDING AND RECEIVING BROADCAST SIGNALS

A broadcast signal receiver is disclosed. A broadcast signal receiver according to the present invention comprises a synchronization/demodulation module carrying out signal detection and OFDM demodulation on a received broadcast signal; a frame parsing and deinterleaving module parsing and deinterleaving a signal frame of the broadcast signal; a demapping and decoding module converting data of at least one Physical Layer Pipe (PLP) of the broadcast signal into a bit domain and performing FEC decoding on the converted data; and an output processing module receiving data of the at least one PLP and outputting the received data into a data stream. 110-. (canceled)11. A broadcast signal receiver , comprising:a demodulator configured to perform demodulation on a received broadcast signal;a frame parser configured to parse a signal frame of the broadcast signal, wherein the signal frame includes a preamble and Physical Layer Pipe (PLP) data, the preamble including signaling information for configuring physical layer parameters;a time deinterleaver configured to time-deinterleave the PLP data;a constellation demapper configured to perform constellation demapping on the PLP data;a decoder configured to perform Low-Density Parity Check (LDPC) decoding and Bose, Chaudhuri, Hocquenghem (BCH) decoding on the PLP data; anda output processor configured to process the PLP data and to output a data stream;wherein the signaling information includes Time Interleaving (TI) extended interleaving information which indicates whether an extended interleaving mode has been used for the PLP data, the extended interleaving mode increasing time interleaving depth, andthe time deinterleaver operates in an extended deinterleaving mode when the TI extended interleaving information indicates that the extended interleaving mode has been used for the PLP data.12. The broadcast signal receiver of claim 11 , wherein the time deinterleaver operates in the extended deinterleaving mode only when the PLP ...

Method and device for radio frame transmission

A method for radio frame transmission, applied to a communication station, is provided, the method including: receiving a request frame sent simultaneously or in a time-sharing manner by one or more stations; and sending a broadcast response frame to the one or more stations. Also provided is a device for radio frame transmission. The solutions of the present application can improve the transmission efficiency.

AUDIO SIGNAL TRANSMISSION SYSTEM AND DATA PROCESSING METHOD FOR ENHANCING DATA ACCURACY OF THE SAME

An audio signal transmission system includes a first device and a second device. The first device transmits audio signals to the second device for the second device to receive and process. After converting a piece of information read by the first device into digital data, the first device arranges the digital data to acquire a matrix, performs error control coding algorithm to rearrange and code continuous data in the matrix to generate a byte sequence, and modulates the byte sequence to generate a set of audio signals for transmission. The second device receives and modulates the set of audio signals to acquire the byte sequence, and performs an error control decoding algorithm to correctly acquire the piece of information. Accordingly, data accuracy through the audio signal transmission can be ensured, and the issue of massive uncorrectable continuous data upon audio signal transmission over the air can be tackled. 1. A data processing method for enhancing data accuracy of an audio signal transmission system , wherein the audio signal transmission system has a first device and a second device and the first device transmits audio waves to the second device for the second device to receive , the method performed by the first device and comprising steps of:receiving a piece of information and converting the piece of information into digital data;rearranging the digital data to generate a matrix;performing an error control coding algorithm to code and sequentially rearranging data in the matrix in generation of a byte sequence;adding a header to the byte sequence to create a bit sequence and then modulating the bit sequence to generate a set of audio signals; andtransmitting the set of audio signals to the second device for the second device to receive.2. The data processing method as claimed in claim 1 , wherein the step of rearranging the digital data to generate the matrix further has a step of adding a check code to the digital data and rearranging the digital ...

TRANSMITTING APPARATUS AND INTERLEAVING METHOD THEREOF

A transmitting apparatus is provided. The transmitting apparatus includes: an encoder configured to perform a low-density parity check (LDPC) encoding on input bits using a parity check matrix to generate an LDPC codeword comprising information word bits and parity bits; an interleaver configured to interleave the LDPC codeword; and a modulator configured to map the interleaved LDPC codeword onto a modulation symbol, wherein the modulator is further configured to map a bit included in a predetermined bit group from among a plurality of bit groups constituting the LDPC codeword onto a predetermined bit of the modulation symbol. 2. The method of claim 1 , wherein each of the plurality of bit groups comprises 360 bits.3. The method of claim 1 , wherein the π(j) is determined based on at least one of the code length claim 1 , a modulation method for the mapping and the code rate. This application is a continuation application of U.S. patent application Ser. No. 14/716,172 filed May 19, 2015, the disclosure of which is incorporated herein by reference in its entirety.Apparatuses and methods consistent with exemplary embodiments relate to a transmitting apparatus which processes and transmits data, and an interleaving method thereof.In the 21st century information-oriented society, broadcasting communication services are moving into the era of digitalization, multi-channel, wideband, and high quality. In particular, as high quality digital televisions, portable multimedia players and portable broadcasting equipment are increasingly used in recent years, there is an increasing demand for methods for supporting various receiving methods of digital broadcasting services.In order to meet such demand, standard groups are establishing various standards and are providing a variety of services to satisfy users' needs. Therefore, there is a need for a method for providing improved services to users with high decoding and receiving performance.Exemplary embodiments of the inventive ...

COMMUNICATION SUPPORT FOR LOW CAPABILITY DEVICES

Methods for performing communication by a user equipment (UE) and a base station (BS) in a wireless communication system, a UE, and a BS are provided. The method for performing communication by the UE includes identifying a starting orthogonal frequency division multiplexing (OFDM) symbol for a downlink (DL) channel in a subframe based on higher layer signaling; identifying a bandwidth of the DL channel based on a modulo operation using a cell identity and a predetermined number; and receiving the DL channel in the subframe based on the starting OFDM symbol and the bandwidth. 1. A method for performing communication by a user equipment (UE) in a wireless communication system , the method comprising:identifying a starting orthogonal frequency division multiplexing (OFDM) symbol for a downlink (DL) channel in a subframe based on higher layer signaling;identifying a bandwidth of the DL channel based on a modulo operation using a cell identity and a predetermined number; andreceiving the DL channel in the subframe based on the starting OFDM symbol and the bandwidth.2. The method of claim 1 , further comprising:reporting, to a base station (BS), a wideband channel quality indicator (CQI) value determined based on transmission on one or more bands in the DL channel.3. The method of claim 1 , further comprising:suspending a sounding reference signal (SRS) transmission, if an uplink (UL) control signal or a UL data transmission and the SRS transmission are to be performed in a same subframe.4. The method of claim 1 , further comprising:receiving a cell specific reference signal (CRS) in the bandwidth.5. The method of claim 1 , wherein a rank indicator (RI) report and a hybrid automatic repeat request (HARQ) acknowledgement (ACK) signaling of the UE are omitted.6. A method for performing communication by a base station (BS) in a wireless communication system claim 1 , the method comprising:transmitting, to a user equipment (UE), higher layer signaling including information ...

Co-existence of latency tolerant and low latency communications

Some user equipments (UEs) served by a base station may need to receive data from the base station and/or transmit data to the base station with lower latency than other UEs. It is desired to accommodate the presence of both low latency and latency tolerant communications in shared time-frequency resources to try to improve resource utilization. Embodiments are disclosed in which low latency and latency tolerant communications coexist in the same time-frequency resources. In some embodiments, a latency tolerant transmission is postponed to free resources to send a low latency transmission.

Method and arrangement for pilot pattern based control signaling in mimo systems

A radio base station, user equipment (UE), and method of control signaling in wireless communication systems. Control information is transferred from a base station to at least one UE, via a plurality of common pilot channels. A set of unique pilot sequences is predefined, and the base station assigns specific pilot sequences from the set of pilot sequences to specific common pilot channels, forming a pilot sequence assignment pattern representing specific control information. The UE, having knowledge of the relations between pilot sequence assignment patterns and control information, interprets the received pilot sequence assignment pattern as specific control information. The method is particularly well suited for broadcast type control information.

Broadcast-signal transmitter/receiver and method for transmitting/receiving broadcast signals

As an aspect of the present invention, an embodiment of the invention provides a method of transmitting broadcast data, the method comprising: encoding transmission units for forward error correction, wherein the transmission units carry the broadcast data which carry a service or service component; mapping the encoded transmission units on constellations; MIMO encoding the mapped transmission units; time-interleaving the MIMO encoded transmission units; building signal frames including the time-interleaved transmission units; modulating the signal frames by Orthogonal Frequency Division Multiplexing, OFDM scheme; and transmitting the modulated signal frames, wherein the transmitted signal frames include preambles, the preambles having physical signaling data for the transmission units.

DATA COMMUNICATION DEVICE, ARITHMETIC PROCESSING DEVICE, AND CONTROL METHOD OF DATA COMMUNICATION DEVICE

A data communication device communicating with other devices via multiple communication paths includes a transmission unit and a reception unit. The transmission unit is configured to receive a packet containing header information and data, to output the header information to each of the communication paths, to divide the data into multiple data pieces, and to output the data pieces to the respective communication paths. The reception unit is configured to receive header information and a data piece for each of the communication paths, and to reconstruct a packet from the header information and the data piece received from each of the communication paths. In reconstructing the packet, the reception unit adjusts, for each of the communication paths, output timing of the data piece, based on the header information. 1. A data communication device communicating with other devices via a plurality of communication paths , the data communication device comprising:a transmission unit configured to receive a packet containing header information and data, to output the header information to each of the communication paths, to divide the data into a plurality of data pieces, and to output the data pieces to the respective communication paths; anda reception unit configured to receive header information and a data piece for each of the communication paths, and to reconstruct a packet from the header information and the data piece received from each of the communication paths, the reconstruction of the packet being performed by adjusting, for each of the communication paths, output timing of the data piece, based on the header information.2. The data communication device according to claim 1 , whereinthe transmission unit is configured to convert, for each of the communication paths, the header information and the data piece from parallel data format to serial data format, before outputting the header information and the data piece to the communication path, andthe reception ...

APPARATUS FOR TRANSMITTING BROADCAST SIGNALS, APPARATUS FOR RECEIVING BROADCAST SIGNALS, METHOD FOR TRANSMITTING BROADCAST SIGNALS AND METHOD FOR RECEIVING BROADCAST SIGNALS

A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals, the apparatus comprises an encoder to encode service data, a framing block to map the encoded service data into data symbols to build at least one signal frame, a frequency interleaver to frequency interleaving data in the at least one signal frame by using an interleaving sequence, a modulator to perform a modulation on the frequency interleaved data by the OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter to transmit the broadcast signals having the modulated data, wherein a different interleaving sequence is used for two consecutive data symbols corresponding to an OFDM symbol pair or a data symbol corresponding to an OFDM symbol according to an FFT size of the modulation. 110-. (canceled)11. A method for transmitting broadcast signals , the method comprising:encoding service data;mapping the encoded service data to symbols;building a signal frame including the symbols;frequency interleaving the symbols in the signal frame,wherein after an interleaving sequence is generated based on a toggle bit, a basic interleaving sequence, and a symbol offset, it is checked whether or not an address of the generated interleaving sequence is within a range of an OFDM symbol,wherein after checking the address, the symbols are frequency interleaved using the interleaving sequence, andwherein when the FFT size is 32K, a single permutation is applied to the basic interleaving sequence, and when the FFT size is 8K or 16K, different permutations are applied to the basic interleaving sequence; andmodulating the frequency interleaved symbols and transmitting the modulated symbols via the broadcast signals.12. An apparatus for transmitting broadcast signals , the apparatus comprising:an encoder to encode service data;a symbol mapper to map the encoded service data to symbols;a framing block to build a signal frame including the ...

Apparatus and method for channel state information feedback in wireless communication system

The present disclosure relates to a pre-5 th -Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4 th -Generation (4G) communication system such as Long Term Evolution (LTE). Methods and apparatuses are provided for devices in a wireless communication system. Information requesting a channel estimation by at least one second device is transmitted from a first device to the at least one second device. Channel information is received at the first device as feedback from the at least one second device.

CONTROLLER THAT RECEIVES A CYCLIC REDUNDANCY CHECK (CRC) CODE FOR BOTH READ AND WRITE DATA TRANSMITTED VIA BIDIRECTIONAL DATA LINK

A controller includes a link interface that is to couple to a first link to communicate bi-directional data and a second link to transmit unidirectional error-detection information. An encoder is to dynamically add first error-detection information to at least a portion of write data. A transmitter, coupled to the link interface, is to transmit the write data. A delay element is coupled to an output from the encoder. A receiver, coupled to the link interface, is to receive second error-detection information corresponding to at least the portion of the write data. Error-detection logic is coupled to an output from the delay element and an output from the receiver. The error-detection logic is to determine errors in at least the portion of the write data by comparing the first error-detection information and the second error-detection information, and, if an error is detected, is to assert an error condition. 1. (canceled)2. A controller device to control the operation of a solid state memory device , the controller device comprising: transmitter circuitry to transmit command information, and command error detection information associated with the command information, to the solid state memory device; and', 'receiver circuitry to receive a group of read data bits output by the solid state memory device in connection with the command information, the group of read data bits being time multiplexed with read data error-detection information; and,, 'a link interface configurable in a first configuration and a second configuration, the first configuration to be for bidirectional communication via the link interface, the second configuration to be for unidirectional communication via the link interface, wherein the link interface includescircuitry to determine an error condition based on the group of read data bits and the read data error-detection information, the controller device to perform a remedial action in the event that the circuitry determines the error condition. ...

APPARATUS FOR TRANSMITTING BROADCAST SIGNALS, APPARATUS FOR RECEIVING BROADCAST SIGNALS, METHOD FOR TRANSMITTING BROADCAST SIGNALS AND METHOD FOR RECEIVING BROADCAST SIGNALS

The present invention provides a method of transmitting broadcast signals. The method includes encoding service data of Physical Layer Pipes (PLPs); bit interleaving the encoded service data; building at least one signal frame including the bit interleaved service data; and modulating data in the at least one signal frame by Orthogonal Frequency Division Multiplexing (OFDM) method; inserting a preamble at a beginning of each of the at least one signal frame after the modulating step; and transmitting the broadcast signals having the modulated data, wherein the preamble includes two OFDM symbols and each of the two OFDM symbols is generated by a sequence multiplication, and wherein each of the two OFDM symbols in the preamble includes information for an emergency alert. 124-. (canceled)25. A method of transmitting broadcast signals by a broadcast transmitter , the method including:encoding service data of Physical Layer Pipes (PLPs);time interleaving the encoded service data of the PLPs;building at least one signal frame including the time interleaved service data; andmodulating data in the at least one signal frame by an Orthogonal Frequency Division Multiplexing (OFDM) method;inserting a robust preamble at a beginning of each of the at least one signal frame after the modulating step; andtransmitting the broadcast signals having the modulated data,wherein the robust preamble includes two OFDM symbols and each of the two OFDM symbols is generated by a sequence multiplication, andwherein each of the two OFDM symbols in the robust preamble includes information for an emergency alert.26. The method of claim 25 , wherein the two OFDM symbols in the robust preamble include different data in a frequency domain claim 25 , respectively.27. The method of claim 25 , wherein each of the two OFDM symbols in the robust preamble includes different data in a time domain claim 25 , respectively.28. The method of claim 25 , wherein values used for the robust preamble is modulated to ...

COMMUNICATION SYSTEM

An embodiment of the invention relates to a method of operating a communication system () that comprises at least four communication nodes (A, B, C, D). The communication system is operated in a time-division multiplexing technique wherein the communication is carried out in consecutive time frames which are divided into slots. At least one slot is allocated to each of the communication nodes. Each of the slots comprises, or preferably consists of, at least two consecutive sub-slots, hereinafter referred to as transmission sub-slot (TSS-TSS) and echo sub-slot (ESS-ESS). Echo signals (E (DS)-E (DS)) are transmitted during echo sub-slots (ESS-ESS). 128-: (canceled)2910. Method of operating a communication system () that comprises at least four communication nodes (A , B , C , D) wherein:{'b': 10', '1', '2', '1', '4, 'the communication system () is operated in a time-division multiplexing technique wherein the communication is carried out in time frames (F, F) which are divided into slots (S-S),'}{'b': 1', '4', '1', '4', '1', '4, 'each of the slots (S-S) comprises at least two sub-slots, hereinafter referred to as transmission sub-slot (TSS-TSS) and echo sub-slot (ESS-ESS),'}{'b': 1', '4', '1', '4', '1', '4, 'each of the communication nodes (A, B, C, D) has its own transmission sub-slot when transmitting data signals (DS-DS) to other communication nodes, and transmits its data signals (DS-DS) in its transmission sub-slot (TSS-TSS) to other communication nodes,'}{'b': 1', '4', '1', '4', '1', '4, 'each of the communication nodes (A, B, C, D), or a predefined subset of the communication nodes (A, B, C, D), that has received a data signal (DS-DS) in one of the transmission sub-slots (TSS-TS S), analyzes the data signal (DS-DS) regarding a correct reception, and'}{'b': 1', '4', '10', '1', '4', '1', '4', '1', '4, 'in case of a correct reception, each of the communication nodes (A, B, C, D), or said predefined subset of the communication nodes (A, B, C, D), determines whether ...

Lightweight multicast acknowledgement technique in communication networks

In one embodiment, a message is received at a caching node in a network including an indication of the message's urgency. The message is transmitted to child nodes of the caching node, and upon transmitting the message, a retransmission timer is initiated when the message is urgent, based on the indication of the message's urgency. Then, one or more acknowledgements of receipt of the transmitted message are received from one or more of the child nodes, respectively. Upon expiration of the retransmission timer, when it is determined that one or more of the child nodes did not receive the transmitted message based on the received acknowledgements, the message is retransmitted to the child nodes.

SYSTEM AND METHOD FOR COVERAGE ENHANCEMENTS OF BROADCAST CHANNELS

A base station transmits and a UE detects broadcast information when the UE operates in a Coverage Enhancement (CE) mode. The base station transmits repetitions of signaling conveying broadcast information in one or more subframes of each frame in a quadruple of frames. The transmission is intermittent in time. To detect the broadcast information, the UE blindly combines and decodes the repetitions of signaling assuming their existence. The base station informs the pattern for the intermittent transmissions of the signaling to UEs connected to the base station or to other base stations. 1. A method , comprising:receiving, in first frequency resources, first broadcast signaling that provides a master information block (MIB), wherein the MIB indicates second frequency resources; andreceiving, in the second frequency resources, control signaling scheduling second broadcast signaling that provides a system information block (SIB).2. The method of claim 1 , wherein the SIB includes a bitmap with size equal to a size of a set of time resources for the first broadcast signaling claim 1 , andwherein each element of the bitmap indicates presence or absence for the first broadcast signaling in a corresponding time resource.3. The method of claim 2 , wherein the set of time resources for the first broadcast signaling are for broadcast signaling in a first cell.4. The method of claim 1 , wherein time resources for reception of the first broadcast signaling are according to a configuration from a predetermined set of configurations.5. The method of claim 1 , wherein a first time resource for the first broadcast signaling is determined as a function of a system frame number.6. The method of claim 2 , further comprising:receiving a physical downlink shared channel (PDSCH) in a time resource from the set of time resources and over the second frequency resources.7. The method of claim 2 , further comprising:receiving a parameter indicating a periodicity for the set of time resources ...

OPTIMIZED MESSAGE RETRANSMISSION MECHANISM FOR DISTRIBUTED STORAGE VIRTUALIZATION DIRECTORY SYSTEM

A method of retransmitting a multicast message through a unicast channel in a virtual distributed storage system comprising a cluster of nodes that includes a master node and a set of agent nodes is provided. Each node maintains a copy of a directory of the virtual distributed storage system. The master node multicasts messages to the agent node through a multicast channel to update the directory. The method determines that a particular message to update the directory exceeds a maximum size limit for transmit to the agent nodes through the multicast channel. The method multicasts a retransmission trigger message from the master node to each agent node. The method receives a retransmission request message at the master node from each of the agent nodes through a unicast channel. The method sends the particular message to update the directory from the master node to each agent node through the unicast channel. 1. A method of retransmitting a multicast message through a unicast channel in a virtual distributed storage system comprising a cluster of nodes comprising a master node and a set of agent nodes , each node in the cluster of nodes maintaining a copy of a directory of the virtual distributed storage system , the master node multicasting messages to the agent nodes through a multicast channel to update the directory , the method comprising:at the master node, determining that a particular message to update the directory exceeds a maximum size limit for transmit to the agent nodes through the multicast channel, the particular message comprising an identification of the message;multicasting a retransmission trigger message from the master node to each of the agent nodes, the retransmission trigger message comprising the identification of the particular message;at the master node, receiving a retransmission request message from each of the agent nodes through a unicast channel established between the master node and the agent node; andin response to the receiving of ...

Method and apparatus for performing position-based sidelink communication in wireless communication system

Proposed is a method for operating a first device ( 100 ) in a wireless communication system. The method may comprise the steps of: receiving, from a second device, a sidelink service and at least one ID associated with the sidelink service; and determining a communication range associated with the second device on the basis of mapping information and the at least one ID associated with the received sidelink service.

Unicast and groupcast transmissions over sidelink

The methods, devices, and systems discussed herein describe four different mechanisms (e.g., solutions) to assist a leader of a group of wireless communication devices in deciding when to switch between groupcast and unicast transmissions. In the first solution, the group leader may decide to initiate groupcast or unicast without considering the design of the Access Stratum (AS) layer link management. In the second solution, the group leader can determine whether to initiate unicast transmission based, at least partially, on feedback messages received from one or more other members of the group. In the third solution, the group leader has the option to simultaneously transmit groupcast and unicast transmissions towards the same user equipment devices (UEs). In the fourth solution, the group leader indicates to the groupcast-receiving UEs that the transmission is about to be switched from groupcast to unicast.

APPARATUS AND METHOD FOR SENDING AND RECEIVING BROADCAST SIGNALS

A broadcast signal receiver is disclosed. A broadcast signal receiver according to an embodiment of the present invention comprises a synchronization & demodulation module performing signal detection and OFDM demodulation on a received broadcast signal; a frame parsing & deinterleaving module performing parsing and deinterleaving of a signal frame of the broadcast signal; a demapping & decoding module performing conversion of data of at least one Physical Layer Pipe (PLP) of the broadcast signal into the bit domain and FEC decoding of the converted PLP data; and an output processing module outputting a data stream by receiving the at least one PLP data. 112.-. (canceled)13. A broadcast signal receiver comprising:a demodulator configured to demodulate a broadcast signal;a frequency deinterleaver configured to frequency-deinterleave a signal frame comprised in the broadcast signal;a frame parser configured to parse the signal frame and to output Physical Layer Pipe (PLP) data of the signal frame;a time deinterleaver configured to time-deinterleave the PLP dataa decoder configured to perform error correction decoding on the PLP data;wherein the signal frame comprises a preamble and at least one subframe,wherein, when the frequency deinterleaver frequency-deinterleaves the signal frame, a symbol offset generator of the frequency deinterleaver is reset on a first symbol of the preamble and on a first symbol of a second subframe and subsequent subframes except a first subframe, the first subframe being a subframe which immediately follows the preamble.14. The broadcast signal receiver of claim 13 , wherein a same Fast Fourier Transform (FFT) size is used for the preamble and the first subframe.15. The broadcast signal receiver of claim 13 , wherein the frequency deinterleaver always frequency-deinterleaves the preamble and optionally frequency-deinterleaves each of the at least one subframe claim 13 , andwherein the preamble comprises frequency interleaver information ...

Method for reducing overhead of control signal during connection of plural lte base stations

Disclosed herein is a method for a terminal to effectively transmit a control signal when a macro cell base station that can be applied to a small cell cluster environment and a small cell base station simultaneously provide services in a heterogeneous network, and a method for reducing overhead of a control signal during connection of a plurality of LTE base stations, which can remarkably reduce the transmission frequency of control signals that are transmitted from a terminal to a small cell base station or can transmit the control signals all at once.

Bit interleaver for low-density parity check codeword having length of 64800 and code rate of 2/15 and quadrature phase shift keying, and bit interleaving method using same

A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 64800 and a code rate of 2/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for quadrature phase shift keying (QPSK) modulation.

Self-describing error correction of consolidated media content

Presented herein are downstream recovery (error correction) techniques for an aggregated/consolidated media stream. In one example, a consolidated media stream that includes source media packets from one or more sources is sent to one or more downstream receiving devices. Based on the source media packets, one or more self-describing recovery packets for downstream error correction of the source media packets are generated. The self-describing recovery packets include a mapping to the source media packets used to generate the self-describing recovery packets, thereby avoiding the addition of error correction information in the consolidated media stream. The one or more self-describing recovery packets are sent to each of the downstream receiving devices as a separate stream.

Method and apparatus for transceiving a data frame in a wireless lan system

A method of transmitting a data frame by a transmitter in a WLAN system is provided. The method includes generating a data block including at least one data units respectively transmitted through at least one or more spatial streams to at least one receiver, transmitting first control information to the at least one receiver, transmitting second control information to each receiver, and transmitting the data block to the at least one receiver. The first control information includes a length indicator for the data block, a MIMO indicator indicating whether the data block is for SU-MIMO or MU-MIMO, and a spatial stream indication field including information about the number of the spatial streams. The second control information includes a FEC coding field indicating an encoding scheme applied to the data unit and an MCS field indicating an MCS applied to the data unit.

Multicast traffic optimization in multihomed edge network elements

A computer network efficiently provides a multicast network flow to a multicast recipient across a multihomed network element. The multihomed network element includes network devices that receive multicast data from a source of a multicast network flow. Each particular network device that received the multicast data publishes a notification indicating that the multicast network flow is available from the particular network device. The computer network receives a subscription to the multicast network flow from a multicast recipient, and determines whether to bridge the multicast data across the multihomed network element based on a multicast configuration of the computer network. The multihomed network element provides the multicast data to the multicast recipient from at least one of the particular network devices that received the multicast data from the source of the multicast network flow.

BROADCAST SIGNAL TRANSMITTING APPARATUS AND BROADCAST SIGNAL TRANSMITTING METHOD

A method of processing a service in a transmitter, and including generating, by a hardware processor, a first media component and a second media component for the service; generating, by the hardware processor, signaling data for the service; time interleaving, by a time interleaver, the first media component, wherein the first media component is time-interleaved by column-wise writing actual Forward Error Correction (FEC) blocks including the first media component in a Time Interleaving (TI) memory and diagonal-wise reading the first media component in the actual FEC blocks from the TI memory, wherein one or more virtual FEC blocks are skipped during the diagonal-wise reading the written first media component, and wherein a number of the one or more virtual FEC blocks is equal to a difference between a number of the actual FEC blocks and a column number of the TI memory; generating, by a signaling generator, physical layer signaling information, wherein the physical layer signaling information includes first physical layer signaling information and second physical layer signaling information, wherein the first physical layer signaling information includes information for identifying a size of the second physical layer signaling information and wherein the second physical layer signaling information includes information for obtaining the column number of the TI memory; transmitting, by an antenna, the time-interleaved first media component, the physical layer signaling information and the signaling data through a broadcast network; and transmitting, by a network interface, the second media component to a receiver through a broadband network. Further, the signaling data transmitted through the broadcast network includes first timeline information for specifying a timeline of the first media component transmitted through the broadcast network and uniform resource location information for the second media component. 1. A method of processing a service in a transmitter ...

COMMUNICATION SUPPORT FOR LOW CAPABILITY DEVICES

A method for performing communication by a user equipment (UE) in a wireless communication system is provided. The method includes identifying a starting orthogonal frequency division multiplexing (OFDM) symbol for a downlink (DL) channel in a subframe based on higher layer signaling; identifying a bandwidth of the DL channel based on a modulo operation using a cell identity and a predetermined number; and receiving the DL channel in the subframe based on the starting OFDM symbol and the bandwidth. 1identifying a starting orthogonal frequency division multiplexing (OFDM) symbol for a downlink (DL) channel in a subframe based on higher layer signaling;identifying a bandwidth of the DL channel based on a modulo operation using a cell identity and a predetermined number; andreceiving the DL channel in the subframe based on the starting OFDM symbol and the bandwidth.. A method for performing communication by a user equipment (UE) in a wireless communication system, the method comprising: This application is a Continuation Application of U.S. patent application Ser. No. 15/812,659, which was filed in the U.S. Patent and Trademark Office on Nov. 14, 2017, now U.S. Pat. No. 10,142,933, issued on Nov. 27, 2018, which is a continuation of U.S. patent application Ser. No. 15/397,181, which was filed in the U.S. Patent and Trademark Office on Jan. 3, 2017, which is a continuation of U.S. patent application Ser. No. 14/861,596, which was filed in the U.S. Patent and Trademark Office on Sep. 22, 2015, now U.S. Pat. No. 9,538,521, issued on Jan. 3, 2017, which is a continuation of U.S. patent application Ser. No. 13/715,174, which was filed in the U.S. Patent and Trademark Office on Dec. 14, 2012, now U.S. Pat. No. 9,144,065, issued on Sep. 22, 2015, which claims priority under 35 U.S.C. § 119(e) to U.S. Provisional Patent Application No. 61/576,695, which was filed in the U.S. Patent and Trademark Office on Dec. 16, 2011, the content of each of which is incorporated herein by ...

Collective network for computer structures

A system and method for enabling high-speed, low-latency global collective communications among interconnected processing nodes. The global collective network optimally enables collective reduction operations to be performed during parallel algorithm operations executing in a computer structure having a plurality of the interconnected processing nodes. Router devices are included that interconnect the nodes of the network via links to facilitate performance of low-latency global processing operations at nodes of the virtual network and class structures. The global collective network may be configured to provide global barrier and interrupt functionality in asynchronous or synchronized manner. When implemented in a massively-parallel supercomputing structure, the global collective network is physically and logically partitionable according to needs of a processing algorithm.

Method and device for performing coordinated multi-point transmission based on selection of transmission point

A method of performing, by means of a first transmission point, coordinated multi-point transmission based on the selection of a transmission point according to an embodiment of the present invention includes: selecting a second transmission point from among one or more candidate transmission points participating in the coordinated multi-point transmission; and transmitting a message to the second transmission point to request that the second transmission point transmits a physical downlink shared channel (PDSCH) to a terminal served by the first transmission point, wherein the message indicates a time duration for which the PDSCH is transmitted by the second transmission point.

DIGITAL BROADCAST SYSTEM FOR TRANSMITTING/RECEIVING DIGITAL BROADCAST DATA, AND DATA PROCESSING METHOD FOR USE IN THE SAME

The present invention is directed to a digital broadcast system and a data processing method. A broadcast signal in which mobile service data and main service data are multiplexed is transmitted and received. Then, in a broadcasting receiver, the program table information including information about a service or a program of an ensemble is parsed according to an identifier of the ensemble in which the mobile service data are multiplexed, in the received broadcast signal. And a mobile service is outputted by using the mobile service data and the parsed program table information. 1. A method of processing broadcast data in a receiver , the method comprising:receiving a broadcast signal including broadcast service data encoded at a code rate, transmission parameters, first signaling information and second signaling information which provide information for acquisition of a service;demodulating the received broadcast signal;first decoding the transmission parameters in the demodulated broadcast signal;second decoding the first-decoded transmission parameters;block de-interleaving the broadcast service data in the demodulated broadcast signal; anddecoding the block de-interleaved broadcast service data,wherein the first signaling information includes information for identifying a broadcast stream within which the broadcast service data are carried, service type information for indicating a type of the service, and information for indicating whether or not the service is hidden,wherein the second signaling information includes Internet Protocol (IP) address information for accessing of the broadcast service data, andwherein the transmission parameters include information for identifying the code rate of the broadcast service data.2. The method of claim 1 , wherein the broadcast signal further includes known data and wherein the known data include a first pattern of known data and a second pattern of known data other than the first pattern of known data.3. The method of ...