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Heterogeneous multi-interface multi-channel wireless Mesh network key technology research

Author: LiChunMing
Tutor: PengJun
School: Central South University
Course: Signal and Information Processing
Keywords: Heterogeneous multi- interface, multi-channel WMN Channel allocation Load balancing Aware Routing
CLC: TN929.5
Type: Master's thesis
Year: 2009
Downloads: 137
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Abstract


Wireless Mesh Network (WMN, wireless mesh network) with a high-bandwidth , large coverage , deployment and low cost , is the \Use a variety of different radio interface and multi-channel technology to further enhance the performance of wireless Mesh network . In this paper, the impact of network performance and resource utilization channel assignment algorithm and routing protocols to conduct research , the main work is as follows: throughput for heterogeneous multi- interface multi-channel WMN channel allocation behavior will affect the neighbor node interface configuration the proposed channel assignment algorithm based neighbor information and channel statistical multiplexing . All nodes in the network using a common channel as the control channel and the neighboring node shared interface - letter Road information , these information design a channel gain factor is used to quantized using a channel to the network to bring the gain ; while the surrounding space activities letter Road use frequency statistics , frequency of use the more low the channel of its potential conflict the smaller ; combined channel gain factor and letter Road use frequency design a channel allocation criterion CGSBM making node in the channel allocation both consider itself throughput needs another both neighbor nodes data transceiver . At the network layer , due to the differences of each wireless node configuration interface , making the problem of load balancing become key issues that affect the heterogeneous multi- interface multi-channel WMN routing protocol performance , improve network throughput performance and balance the network load , is proposed based on the interface capacity and link layer aware routing protocol . ICMP messages through the use of the bandwidth , bit error rate , the channel frequency of use , such as MAC queue length characteristic parameters of the link layer inter - layer transfer to the network layer , the design of a link quality metrics , node channel switching the integrated routing of overhead and path load information , criterion RACIM, and applied to improve the DSR routing protocol . Finally , the use of network simulation tool NS2 proposed CGSBM algorithm , and RACIM of routing protocols in a variety of network scenarios to evaluate the performance . The simulation results show that they increase in network throughput , and resource utilization than other protocols .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
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