Abstract
The popularity of wireless communication accelerates research on new technologies that are required to satisfy users' needs. Wireless mesh networks (WMNs), which are additional access technologies instead of being a renewed one, have an important place among next-generation wireless networks. In particular, the capability of working without any infrastructure is the most outstanding advantage of WMNs. There are many studies aimed at WMNs, particularly channel assignment and routing methods for multichannel multiradio structures that provide higher data capacity. Interference, which has a direct effect on the quality of communication, is still a challenge to be addressed. In this study, multichannel multiradio WMNs and various channel assignment schemes are analyzed. Directional mesh (DMesh) architecture, which uses directional antennas to form a multichannel structure, is analyzed in terms of channel assignment procedure. A new interference-aware channel assignment scheme that aims to eliminate DMesh's disadvantages is proposed and performances of both schemes are compared. Several results of experimental analysis prove that the proposed channel assignment scheme improves the performance of DMesh
Highlights
Wireless mesh networks (WMNs) are ad hoc network systems that arise to provide better service infrastructure for next-generation wireless networks
We present a new channel assignment (CA) scheme, which aims to minimize the interference while maximizing the throughput for MC-MR WMNs
Efficient channel assignment is the main problem to be solved for minimizing negative impacts of interference caused by a limited number of channels and protecting the connectivity of the network, mesh nodes with multiple radios have an additive effect on WMN system performance
Summary
Wireless mesh networks (WMNs) are ad hoc network systems that arise to provide better service infrastructure for next-generation wireless networks. In a wireless mesh network, every router contains multiple network interface cards (NICs) or radio interfaces to make simultaneous transmissions possible In this way, the network’s capacity and throughput increase while decrement in interference level is monitored [3]. Efficient channel assignment is the main problem to be solved for minimizing negative impacts of interference caused by a limited number of channels and protecting the connectivity of the network, mesh nodes with multiple radios have an additive effect on WMN system performance. Existence of different channel sets decreases the interference range between adjacent transmissions in some circumstances, but performing the channel assignment process in a planned way is a necessity since poor planning may cause longer paths between mesh nodes [11].
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