In-place A-MSDU aggregation for wireless systems
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United States of America Patent
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Sep 29, 2015
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May 8, 2014
app pub date -
Nov 6, 2012
filing date -
Nov 6, 2012
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Abstract
A sub-frame is generated for each MSDU to be aggregated in an A-MSDU and the sub-frame is stored in place in memory. For each sub-frame, an MSDU descriptor identifying the memory location of the sub-frame is stored in a queue. When a transmit opportunity for an MPDU arises, a DMA engine sequentially transfers the components of sub-frames stored in memory to a PHY layer using a list or other sequence of DMA descriptors obtained from at least a subset of the MSDU descriptors. Thus, these MSDU descriptors allow the aggregation of A-MSDUs to be initiated while the MSDUs are in place in the same memory in which they were initially stored.
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