A TDMA/DCF Hybrid QoS Scheme for Ad Hoc Networks

Jing LIN  Celimuge WU  Satoshi OHZAHATA  Toshihiko KATO  

Publication
IEICE TRANSACTIONS on Communications   Vol.E100-B   No.1   pp.42-53
Publication Date: 2017/01/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2016CQP0006
Type of Manuscript: Special Section PAPER (Special Section on Challenged Networking Technologies and Its Service Quality)
Category: Network
Keyword: 
ad hoc,  TDMA,  DCF,  QoS,  

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Summary: 
We propose a QoS scheme for ad hoc networks by combining TDMA and IEEE 802.11 DCF, and present performance evaluation results of the scheme. In the proposed scheme, the channel time is composed of two different periods, specifically TDMA period and DCF period. The TDMA period provides contention free transmission opportunities for QoS flows, and the DCF period provides contention-based access for best effort or low priority flows. We evaluate the proposed scheme for various numbers of TCP flows and different CBR data rates with QualNet simulator. Simulation results show that the protocol is able to provide an efficient solution for QoS control in ad hoc networks.