TY - GEN
T1 - A channel management protocol for multi-channel, single-radio 802.11-based wireless mesh networks
AU - Lin, Chih Yu
AU - Shu-Hsien Lu, Lu
AU - Tseng, Yu-Chee
PY - 2011/8/10
Y1 - 2011/8/10
N2 - Wireless mesh networks (WMNs) have emerged as a key technology for next-generation broadband wireless access. While benefiting from larger coverage, WMNs also suffer from some scalability problems in terms of throughput, delay, and packet delivery ratio faced by all multi-hop wireless networks. Using multiple channels is a cost-effective solution to these problems. In this paper, we propose a channel management protocol for multi-channel, single-radio 802.11-based wireless mesh networks. In such an environment, two issues should be addressed: channel assignment and channel switch scheduling. Therefore, most existing multi-channel solutions involve a channel assignment scheme and a scheduling scheme to determine nodes' behaviors at different times. However, we observe that channel switching of some mesh points may not be necessary under this environment. In fact, even without channel switching, the benefit of using multiple channels (spatial reuse) can still be achieved. In this work, mesh points are divided into two sets. Those in the first set will be assigned channels and stay in the assigned channels to transmit/receive packets. On the other hand, those in the second set will switch to proper channels dynamically. With this design, a lot of channel switching overheads (switching delay, synchronization drift, etc.) can be mitigated. Extensive simulations are conducted to verify the efficiency of the proposed protocol.
AB - Wireless mesh networks (WMNs) have emerged as a key technology for next-generation broadband wireless access. While benefiting from larger coverage, WMNs also suffer from some scalability problems in terms of throughput, delay, and packet delivery ratio faced by all multi-hop wireless networks. Using multiple channels is a cost-effective solution to these problems. In this paper, we propose a channel management protocol for multi-channel, single-radio 802.11-based wireless mesh networks. In such an environment, two issues should be addressed: channel assignment and channel switch scheduling. Therefore, most existing multi-channel solutions involve a channel assignment scheme and a scheduling scheme to determine nodes' behaviors at different times. However, we observe that channel switching of some mesh points may not be necessary under this environment. In fact, even without channel switching, the benefit of using multiple channels (spatial reuse) can still be achieved. In this work, mesh points are divided into two sets. Those in the first set will be assigned channels and stay in the assigned channels to transmit/receive packets. On the other hand, those in the second set will switch to proper channels dynamically. With this design, a lot of channel switching overheads (switching delay, synchronization drift, etc.) can be mitigated. Extensive simulations are conducted to verify the efficiency of the proposed protocol.
KW - IEEE 802.11
KW - IEEE 802.11s
KW - channel management protocol
KW - wireless mesh network (WMN)
KW - wireless network
UR - http://www.scopus.com/inward/record.url?scp=79961152295&partnerID=8YFLogxK
U2 - 10.1109/CAMAD.2011.5941111
DO - 10.1109/CAMAD.2011.5941111
M3 - Conference contribution
AN - SCOPUS:79961152295
SN - 9781612842820
T3 - 2011 IEEE 16th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks, CAMAD 2011
SP - 26
EP - 30
BT - 2011 IEEE 16th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks, CAMAD 2011
T2 - 2011 IEEE 16th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks, CAMAD 2011
Y2 - 10 June 2011 through 11 June 2011
ER -