WiSP: A protocol for overcoming MAC overheads using packet size dependent channel widths

Vijay Raman, Nitin H Vaidya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we 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. We 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. We propose a protocol called WiSP (channel Width Selection based on Packet size) to estimate the appropriate channel widths depending on the relative traffic load involving short and long packets in the network. We evaluate our protocol using extensive simulations and demonstrate its effectiveness in achieving higher throughputs. We propose our algorithm to complement the frame aggregation (an existing approach that aggregates multiple packets to be sent in a single transmit opportunity) technique. We show that there are scenarios during which the frame aggregation can perform poorly, and show that our proposed algorithm can provide a good performance even in those situations when used along with frame aggregation.

Original languageEnglish (US)
Title of host publication2011 8th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks, SECON 2011
Pages28-36
Number of pages9
DOIs
StatePublished - Sep 20 2011
Event2011 8th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks, SECON 2011 - Salt Lake City, UT, United States
Duration: Jun 27 2011Jun 30 2011

Publication series

Name2011 8th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks, SECON 2011

Other

Other2011 8th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks, SECON 2011
CountryUnited States
CitySalt Lake City, UT
Period6/27/116/30/11

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

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