CrossLayer Optimization in MultiChannel Wireless MultiHop Networks

doi:10.13190/jbupt.201004.64.huangx

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2010, Vol. 33 ›› Issue (4): 64-68.doi: 10.13190/jbupt.201004.64.huangx

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CrossLayer Optimization in MultiChannel Wireless MultiHop Networks

Received:2009-10-25 Revised:2010-03-18 Online:2010-08-28 Published:2010-05-21

Abstract

Abstract:

In order to improve the utilities of the multichannel wireless multihop networks, a practical crosslayer optimization mechanism is proposed. With the proposed mechanism, each node can use joint design algorithm to adjust flow rates distributedly in transport layer, and can use the proposed distributed scheduling algorithm to allocate rates for links in link layer. The gateway uses the proposed minimal interference cost based channel allocation algorithm to allocate channels centralizedly. Through transmitting informations among layers and nodes, the proposed mechanism can coordinate the operations of these layers, so the complexity is decreased, and the signaling overhead is reduced compared with the centralized algorithm. Simulations show that the proposed mechanism can achieve fast convergence, and ensure fairness among flows. With the increasing number of available radios and channels, the rates of flows and network utilities increase.

CLC Number:

TP393

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CrossLayer Optimization in MultiChannel Wireless MultiHop Networks

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