Power-Efficient Spatial Reusable Channel Assignment Scheme in WLAN Mesh Networks

Interference has strong effect on the available bandwidth of wireless local area network (WLAN) based mesh networks. The channel assignment problem for multi-radio multi-channel multihop WLAN mesh networks is complex NP-hard, and channel assignment, routing and power control are tightly coupled. To...

Full description

Saved in:
Bibliographic Details
Published in:Mobile networks and applications 2012-02, Vol.17 (1), p.53-63
Main Authors: Zhu, Rongbo, Wang, Jiangqing
Format: Article
Language:English
Subjects:
Algorithms
Analysis
Assignment problem
Bandwidths
Channels
Communication
Communications Engineering
Computer Communication Networks
Connectivity
Electrical Engineering
Energy consumption
Engineering
Finite element method
Interference
IT in Business
Local area networks
Network interface cards
Networks
Power control
Radios
Reusable
Routing
Studies
Wireless communication
Wireless networks
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Interference has strong effect on the available bandwidth of wireless local area network (WLAN) based mesh networks. The channel assignment problem for multi-radio multi-channel multihop WLAN mesh networks is complex NP-hard, and channel assignment, routing and power control are tightly coupled. To mitigate the co-channel interference and improve capacity in multi-channel and multi-interface WLAN mesh networks, a power-efficient spatial reusable channel assignment scheme is proposed, which considers both channel diversity and spatial reusability to reduce co-channel interference by joint adjusting channel, transmission power and routing. In order to assign channel appropriately, an efficient power control scheme and a simple heuristic algorithm is introduced to achieve this objective, which adjust the channel and power level of each radio according to the current channel conditions so as to increase the opportunity of channel spatial reusability. The proposed channel assignment scheme also takes load, capacity and interference of links into consideration. Simulation results show the effectiveness of our approach and demonstrate that the proposed scheme can get better performance than other approaches in terms of throughput, blocking ratio, energy consumption and end-to-end delay.
ISSN:1383-469X
1572-8153
DOI:10.1007/s11036-011-0302-x