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Performance analysis and service differentiation in the MAC sublayer of IEEE 802.11e ad hoc networks

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2 Author(s)
da Silva, M.P. ; Network & Manage. Lab., Fed. Univ. of Santa Catarina, Brazil ; Westphall, C.B.

This work's contribution consists of the use of service differentiation techniques in the MAC 802.11e enhanced distributed coordination function (EDCF), altering the way each station gains medium access, and establishing access priorities among the stations that comprise an ad hoc network. Some quality of service metrics were considered in order to provide service differentiation in the MAC sublayer and to evaluate the ad hoc network performance; these metrics are throughput, latency, jitter and packet discard. The service differentiation techniques used were: package size variation, arbitration interframe space (AIFS) size alterations, and binary exponential backoff calculus. Simulations were performed to ensure the validity of the differentiation techniques' combined use in the 802.11e MAC sublayer, to establish thresholds to quality of service metrics, to provide medium access priorities and to keep the high level of ad hoc network utilization. The simulations were performed using Network Simulator 2.

Published in:

Telecommunications, 2005. advanced industrial conference on telecommunications/service assurance with partial and intermittent resources conference/e-learning on telecommunications workshop. aict/sapir/elete 2005. proceedings

Date of Conference:

17-20 July 2005