Flow Control Scheme Using Adaptive Receiving Opportunity Control for Wireless Multi-Hop Networks

Atsushi TAKAHASHI  Nobuyoshi KOMURO  Shiro SAKATA  Shigeo SHIODA  Tutomu MURASE  

Publication
IEICE TRANSACTIONS on Communications   Vol.E95-B   No.9   pp.2751-2758
Publication Date: 2012/09/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.2751
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Emerging Technologies and Applications for Ad Hoc and Wireless Mesh Networks)
Category: 
Keyword: 
quality of service,  wireless LAN,  admission control,  multi-hop networks,  

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Summary: 
In wireless single-hop networks, IEEE 802.11e Enhanced Distributed Channel Access (EDCA) is the standard for Quality of Service (QoS) control. However, it is necessary for controlling QoS to modify the currently used IEEE 802.11 Distributed Coordination Function (DCF)-compliant terminals as well as Access Points (APs). In addition, it is necessary to modify the parameter of IEEE 802.11e EDCA when the traffic is heavy. This paper proposes a novel scheme to guarantee QoS of high-priority flow with Receiving Opportunity Control in MAC Frame (ROC) employed adaptive flow control in wireless multi-hop network. In the proposed scheme, the edge APs which are directly connected to user terminals estimate the network capacity, and calculate appropriate ACK prevention probability against low-priority flow according to traffic load. Simulation evaluation results show that the proposed scheme guarantees QoS.