distance-1 constrained channel a [1]....pdf

Distance-1 Constrained Channel Assignment in
Single Radio Wireless works
Ehsan Aryafar Omer Gurewitz Edward W. Knightly
ECE Dept, Rice University CSE Dept, Ben Gurion University ECE Dept, Rice University
Houston, TX 77005 Beer Sheva, Israel Houston, TX 77005
Email: ******@ Email: ******@ Email: ******@
Abstract— This paper addresses channel assignment and ran- availability state, the performance of any TBCS protocol is
dom medium access design for single-radio multi-channel mesh dependent on the accuracy of the channel availability state.
networks. Two prior approaches include: (i) designing MAC Such uracies can be due to (i) loss of reception of control
protocols that dynamically select channels based on local in-
formation and (ii) partitioning the mesh into works with packets when a transceiver is tuned to a different channel
different channels and using as the medium access pro- and (ii) corrupted reception of control messages due to low
tocol. Both of these approaches suffer from limited throughput reception power, channel switching and collisions. Second,
improvement; the first approach due to wrong or plete even under accurate channel availability state, local decision
channel state information that inherently arises in a multi-hop making in a multi-hop topology does not ensure an optimal
wireless environment, wh