Title :
Interference aware routing in multi-radio wireless mesh networks
Author :
Subramanian, Anand Prabhu ; Buddhikot, Milind M. ; Miller, Scott
Author_Institution :
State Univ. of New York at Stony Brook, Stony Brook, NY
Abstract :
We address the problem of interference aware routing in multi-radio infrastructure mesh networks wherein each mesh node is equipped with multiple radio interfaces and a subset of nodes serve as Internet gateways. We present a new interference aware routing metric - iAWARE that aids in finding paths that are better in terms of reduced interflow and intra-flow interference. We incorporate this metric and new support for multi-radio networks in the well known AODV routing protocol to design an enhanced AODV-MR routing protocol. We study the performance of our new routing metric by implementing it in our wireless testbed consisting of 12 mesh nodes. We show that iAWARE tracks changes in interfering traffic far better than existing well known link metrics such as ETT and IRU. We also demonstrate that our AODV-MR protocol delivers increased throughput in single radio and two radio mesh networks compared to similar protocol with WCETT and MIC routing metrics. We also show that in the case of two radio mesh networks, our metric achieves good intra-path channel diversity.
Keywords :
Internet; internetworking; network servers; radio networks; radiofrequency interference; routing protocols; AODV routing protocol; interference aware routing; intra-flow interference; intrapath channel diversity; metric-iAWARE; multiple radio interfaces; multiradio wireless mesh networks; radio mesh networks; ternet gateways; IP networks; Interference; Mesh networks; Power system relaying; Relays; Routing protocols; Spine; Telecommunication traffic; Testing; Wireless mesh networks;
Conference_Titel :
Wireless Mesh Networks, 2006. WiMesh 2006. 2nd IEEE Workshop on
Conference_Location :
Reston, VA
Print_ISBN :
1-4244-0732-X
DOI :
10.1109/WIMESH.2006.288620