Energy Based Shortest Routing in Multi-Channel Multi- Interface Wireless Mesh Network A.Mercy Rani 1 , V.Lakshmi Praba 2 1 Department of Computer Science, Sri SRNM College, Sattur, India Email: mercydurai39@gmail.com 2 Department of Computer Science, Rani Anna Govt.Arts College for Women,Tirunelveli, India Email: vlakshmipraba@rediffmail.com Abstract— With the rising features of Wireless Mesh Networks (WMN) the research is focused on increasing the capacity and throughput of the network. One way to increase the capacity of the network is by the use of multiple channels and multiple interfaces. Furthermore, the performance of the network can be increased by selecting efficient route for transmitting packets from source to destination. The efficient route selection is a major challenge in multi-channel multi-interface WMN. The existing AODV protocol selects a route for transmitting packets from source to destination based on the minimum-hop count. This route may weak due to less energy and causes route request repeatedly. Hence, in this paper, the existing AODV protocol is enhanced for the selection of maximum energy with minimum hop count route. This route selection not only increases the route lifetime but also increases the network capacity, throughput and packet delivery ratio. For the performance evaluation throughput, packet delivery ratio and number of dropped packets was analyzed using NS-2 simulator under two different scenarios, one by varying energy ranges and the other by varying channel capacity. Keywords— Network Capacity, Maximum energy, Multi- Channel, Multi-Interface I. INTRODCUTION In recent years, Wireless Mesh Network(WMN)[1] is a promising technology in which the end users are provided with high speed Broadband Internet access without any interference. WMN has the features of self-organizing, self- healing and Self-configuring. These differ WMN from traditional networks and leads to offer wide area coverage, low deployment cost, installation of networks in historical monuments and easy network maintenance etc.Due to these abilities features, the WMN attracts Internet Service Providers(ISP) and end users for establishing reliable and robust internet services at the lowest cost[2]. The applications of WMN is wider in the range of Home Automation to Disaster recovery[3]. Wireless Mesh Network consists of three components such as mesh clients, mesh routers and gateways. The mesh routers and gateways are static nodes whereas the mesh clients are mobile or stationary nodes. The mesh routers form a mesh backbone infrastructure while the mesh cleints forwards the traffic between the clients through mesh routers. The gateways connect the network to the Internet[1]. Usually the on-demand routing protocols such as AODV (Adhoc On-Demand Distance Vector) [4] and DSR (Dynamic Source Routing) [5] are designed to find route from the source to the destination nodes using minimum-hop count. It is not assured that all minimum-hop count routes will always lead to successful delivery of packets to the destination. The route may need to rediscover frequently due to loss of energy in the route. The on-demand protocols are designed to obtain routing information only when it is needed. The nodes will maintain only the needed routes. The difficulty may arise of this approach is that there is considerable route discovery latency when a new route is requested each time in intermittent-data applications. This degrades the network performance unfavorably. To overcome these issues, the constraint node’s energy is considered for constructing the route besides of hop count. Node’s energy plays a vital role in route construction to create a stronger route in the network. The maximum energy with minimum hop count route is selected for transmission so that, it will stay alive for a longer time and it improves the network performance and throughput considerably. In this paper, the AODV protocol is enhanced in multi-channel multi-interface mesh networks to select an efficient route based on maximum remaining energy and minimum hop count. The paper is organized as follows: Section 2 deals with related work, section 3 describes multi-channel multi-interface and section 4 discusses energy based route in multi-channel multi-interface WMN. Section 5 depicts simulation process and results. In section 6 the conclusion and future scope is presented. II. RELATED WORK In communication system energy based routing has been studied in multi hop wireless networks. Some of the important routing protocols proposed that do not consider the features of multi-channel and multi-interface and some of the findings only consider the energy as a constraint. Campista et al[6] analyzed the recent metrics and various routing protocols in Wireless Mesh Network. The performance results of different metrics are obtained in WMN testbed. The routing protocols are analyzed based on their algorithms. Parissidis et al[7] studied the various routing metrics in wireless mesh networks. The considered metrics have the different optimization objectives and it uses different methods for collecting the required information and different ways to find the route between source and destination. Further, the metrics used for the survey are related with one another and it described the strengths and weaknesses of all metrics. Antonio et al [8] proposed a novel routing algorithm International Journal of Advanced and Innovative Research (2278-7844) / # 1 / Volume 5 Issue 8 © 2016 IJAIR. All Rights Reserved 1