Abstract
Routing metric helps select optimal path from source node to destination node. It is the key for the whole network performance and needs to be designed carefully. Existing routing metrics have at least one of the limitations listed below. (1) Internet-oriented traffic is considered only, and client-oriented traffic is omitted, or vice versa. (2) Route selection is done in mesh network with a single gateway, so route selection is only related to selecting a route path without selecting gateway node. (3) The isotonic requirement cannot be satisfied. In order to conquer the limitations aforementioned and guide route selection, an isotonic differentiated service based interference-aware routing metric is proposed for mesh networks with multiple gateways. Traffic pattern, node load, gateway load, and intraflow and interflow interference are all taken into consideration to guide the selection of best path and best gateway. Simulations reveal that the proposed metric outperforms state-of-art metrics in terms of the average network throughput and average end-to-end delay.
Highlights
Due to the characteristics such as high bandwidth, fast deployment, easy installation, and low cost investment, wireless mesh networks (WMNs) are considered to be potential technologies for constructing generation wireless communication systems [1]
From the first routing metric designed for WMNs, expected transmission count (ETX) [4], many routing metrics have been proposed by academic community, but they have at least one of the limitations listed below
If the number of reserved subpaths is N, node A should broadcast N routing requests (RREQs); if the path length from S to D is M hops, the RREQ overhead of routing protocol based on nonisotonic routing metric is M⋅N times that of routing protocol based on isotonic routing metric
Summary
Due to the characteristics such as high bandwidth, fast deployment, easy installation, and low cost investment, wireless mesh networks (WMNs) are considered to be potential technologies for constructing generation wireless communication systems [1]. Gateway nodes inform mesh routers about their existence and relevant information through gateway discovery process, which is very important for clients who want to access the Internet. In order to conquer limitations of current routing metrics, a differentiated service based interference-aware routing metric (DSIA) is proposed for WMNs with multiple gateways in this paper, which comprehensively takes traffic pattern, node load, gateway load, and intraflow and interflow interference into consideration and provides powerful assistance for routing selection in MRMC WMNs. Extensive simulations show that the proposed metric is efficient in various scenarios; it can dramatically improve network throughput, end-to-end delay, and average packet loss ratio.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Distributed Sensor Networks
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
