Mobility

WiSP: A Protocol for Overcoming MAC Overheads Using Packet Size Dependent Channel Widths

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Executive Summary

In this paper, the authors propose to reduce the effect of rate-independent MAC overheads in random access protocols by partitioning the transmission channel spectrum into a narrow channel and a wide channel. The narrow channel is used for transmitting the short packets (approximately 100 bytes long) and the wide channel is used for transmitting the longer packets. They intend to use multiple radios, one each for the different channel partitions. Narrow width channels have a reduced capacity, which lowers the maximum transmission rate achievable on these channels. As a result, the channel wastage due to the rate-independent MAC overheads can be reduced.

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