Tuesday, March 18, 2008

VARIABLE BIT RATE VOIP IN IEEE 802.11E WIRELESS LANS

FRANK HAIZHON LI, UNIVERSITY OF SOUTH CAROLINA UPSTATE
YANG XIAO AND JINGYUAN ZHANG, UNIVERSITY OF ALABAMA

The article presents CAC for VBR VoIP calls. The variable bit-rate is a consequence of the on-off nature of the calls. The authors present a time-based admission control mechanism that uses token-bucket and relies on the observation information to decide whether to accept a new call or not. Additionally they propose that the AP accesses the channel with priority to solve the uplink-downlink unfairness.

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