01-01-2015 дата публикации
Номер: US20150003422A1
According to an example embodiment, a method may include sending, by an apparatus, a probe requesting for nodes with queued data to acknowledge the probe, receiving, by the apparatus, multiple acknowledgments from the nodes, the multiple acknowledgments overlapping at least partially in time and frequency, determining, by the apparatus, which nodes acknowledged the probe by decoding the multiple acknowledgments according to a code division multiple access scheme, sending, by the apparatus, an allocation to the nodes that acknowledged the probe, the allocation allocating spectral resources for the nodes to send the queued data, and receiving, by the apparatus, the queued data from the nodes that acknowledged the probe. 132-. (canceled)33. A method comprising:sending, by an apparatus, a probe requesting for nodes with queued data to acknowledge the probe;receiving, by the apparatus, multiple acknowledgments from the nodes, the multiple acknowledgments overlapping at least partially in time and frequency;determining, by the apparatus, which sensor nodes acknowledged the probe by decoding the multiple acknowledgments according to a code division multiple access scheme;sending, by the apparatus, an allocation to the nodes that acknowledged the probe, the allocation allocating spectral resources for the nodes to send the queued data; andreceiving, by the apparatus, the queued data from the nodes that acknowledged the probe.34. The method of claim 33 , wherein the probe comprises at least one of a broadcast address and a multicast address identifying a plurality of nodes in a multicast group.35. The method of claim 33 , wherein the probe comprises a plurality of medium access control addresses.36. The method of claim 33 , wherein:the multiple acknowledgements indicate a length of data to be transmitted by the respective nodes, andthe allocated spectral resources are based at least in part on the indicated length of data.37. The method of claim 33 , wherein the determining ...
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