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Abstract

 

Spatial reuse in wireless networks is limited by the SINR threshold and it might be feasible to capture a packet in the presence of ongoing foreign transmission. This work considers a new capture aware channel access protocol by incorporating global channel state information in the decision making process for the channel access jointly with adaptive power framework. The protocol employs power heterogeneous ad-hoc networks; it assigns different transmission power level to individual nodes based on dynamic observation of the network traffic. It exploits spatial heterogeneity of flows at a given channel allocation and sets up either symmetric or asymmetric carrier sensing which in turn  schedules the data packets transmission to maintain adequate service quality and fairness enjoyed by a user. It stands atop capture capable PHY to leverage the channel reuse which is of paramount importance in the design of high capacity ad-hoc networks. Through extensive simulations, the paper demonstrates the efficacy of the new protocol. It delivers high network utilization and also provides fair access to the media.

Keywords

DCF Carrier sensing MAC mechanism Power control Capture effect Wireless network.

Article Details

How to Cite
S, M. (2018). Capture Aware Channel Access Protocol in Wireless Network. The Journal of Engineering Research [TJER], 15(1), 73–87. https://doi.org/10.24200/tjer.vol15iss1pp73-87
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