Multi-Antenna Utilization Scheme to Prevent Packet Congestion in Wireless Mesh Networks

Norihiko SATO  Takeo FUJII  

Publication
IEICE TRANSACTIONS on Communications   Vol.E93-B   No.11   pp.3121-3128
Publication Date: 2010/11/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.3121
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
adaptive array antenna,  MIMO,  SDMA,  wireless mesh network,  

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Summary: 
In this paper, we investigate a multi-packet transmitting and receiving wireless mesh network that uses a multi-antenna set on each node in the network. In wireless mesh networks for accessing the Internet, the target of all traffic generated from distributed nodes is a gateway (GW). Therefore, many packets are concentrated around the GW and the communication channel around the GW is crowded. To prevent packet congestion around the GW, we propose setting an adaptive array antenna on the GW and the relay nodes. We also calculate an appropriate number of antenna elements considering the fair traffic over the whole region, to prevent packet congestion at each node.