Empirical analysis of the single-radio mesh architecture: performance limitations and challenges

Authors:
Andres Arjona;Cedric Westphal;Sami Takala
Affiliations:
Nokia Siemens Networks, Espoo, Finland;Nokia Siemens Networks, Mountain View, CA;Nokia Siemens Networks, Espoo, Finland
Venue:
IWCMC '07 Proceedings of the 2007 international conference on Wireless communications and mobile computing
Year:
2007

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Abstract

Wireless mesh networks are being deployed to provide broadband wireless connectivity to city-wide hotspots. The most successful commercial architecture in these deployments thus far is a single-radio architecture: mesh nodes carry only one radio, which is used both to receive the traffic from the WiFi clients and to relay this traffic through the mesh to the wired internet gateway. In this paper, we study the performance of a representative single radio mesh network and evaluate several key quantities: the fairness in the bandwidth allocation, the impact of the hidden node terminal, and the number of concurrent VoIP supported by the network.