Joint topology control and routing in IEEE 802.11-based multiradio multichannel mesh networks
Joint topology control and routing in IEEE 802.11-based multiradio multichannel mesh networks
复制标题
基于 IEEE 802.11 的多无线电多通道网状网络中的联合拓扑控制和路由
DOI：
10.1109/tvt.2007.900509
复制
发表时间：
2007-09-01
影响因子：
6.8
通讯作者：
Jia, Weijia
中科院分区：
文献类型：
--
作者：
Chen, Lin;Zhang, Qian;Jia, Weijia
由于低成本、易于部署、增加覆盖范围和增强容量，利用廉价且容易获得的电气和电子工程师协会（IEEE）802.11无线接口的多无线电网状网络被吹捧为无线网络的新前沿。在多跳网状系统中，拓扑控制和路由选择之间的密切相互作用影响了无线网络的系统吞吐量。提出了一种新的联合拓扑控制和路由（JTCR）协议的多无线多信道无线网状网络，利用信道分集和空间复用。它位于媒体访问控制和网络层之间，旨在通过以分布式方式协调多个节点之间的传输功率、信道分配和路由选择来提高网络吞吐量。JTCR联合协调每个节点的传输功率，每个无线接口上的信道选择，以及接口之间的路由选择的基础上的流量信息，测量和两跳邻居节点之间交换。一个等效的信道空中时间度量（EC AT M）的量化不同的调整候选人的差异。该协议通过选择一个具有最小EC AT M值的可行调整候选节点并协调受影响节点实现调整，实现了对可用信道的有效利用。基于NS-2的仿真结果表明，使用我们提出的解决方案可以显着提高网络吞吐量。
Due to low cost, ease of deployment, increased coverage, and enhanced capacity, multiradio mesh networks that utilize inexpensive and readily available Institute of Electrical and Electronics Engineers (IEEE) 802.11 wireless interfaces are touted as the new frontier of wireless networking. In a multihop mesh system, the close interaction between topology control and routing selection affects the system throughput of a wireless network. This paper proposes a novel joint topology control and routing (JTCR) protocol for a multiradio multichannel wireless mesh network to exploit both channel diversity and spatial reusability. It resides between medium access control and the network layer and aims to improve the network throughput by coordinating transmission power, channel assignment, and route selection among multiple nodes in a distributed way. JTCR jointly coordinates the transmission power at each node, the channel selection on each wireless interface, and the route selection among interfaces based on the traffic information that is measured and exchanged among two-hop neighbor nodes. An equivalent channel air time metric (EC AT M) is presented to quantify the difference of various adjustment candidates. This protocol achieves the efficient utilization of available channels by selecting a feasible adjustment candidate with the smallest EC AT M value and coordinating affected nodes to realize the adjustment. Our NS-2-based simulation results show that the network throughput can be significantly improved by using our proposed solution.