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Project synopsis


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Project synopsis

  1. 1. B10 Project Synopsis PROJECT SYNOPSIS 1) Project Title: Multi-Interface Multi-Channel for Hybrid Wireless Mesh Networks. 2) Domain : Networking - Wireless Networking. 3) Problem statement: Implementation of MIMC for hybrid wireless mesh networks to enhance the performance metrics such as packet loss, through put and delay. 4) Literature Survey:I) Carine Toham, Francois Jan and Andrzej Duda Orange Labs, Lannion, FranceGrenoble Informatics Lab, Grenoble, France “OLSR Enhancement for Multi-Interface Multichannel Ad Hoc Networks” Description: We address the problem of improving the throughput in multi-hop ad hoc networks. Many approaches can be considered to address this issue. Wefocus on those that imply the use of multiple radio interfaces with separate radiochannels In this context, we need to address two important issues, namely channelassignment and routing We propose a throughput-oriented scheme called IC2A2R.It allows nodes to use the best channel available in their neighborhood based on achannel selection algorithm. It also extends the OLSR protocol with a new routingmetric to take into account both channel diversity and channel alternation[Simulation tests of the enhanced OLSR protocol show that it significantlyimproves the throughput and outperforms existing solutions such as WCETTII) Carine TOHAM, François JAN France Telecom Research & Development 2Avenue Pierre Marzin Lannion France 22307 Institute National Polytechnique deDepartment of Information Science & Engg, BVBCET Page 1
  2. 2. B10 Project SynopsisGrenoble, France “Multi-interfaces and Multi-channels Multi-hop Ad hocNetworks: Overview and Challenges” Description: Mobile ad hoc networks have typically used the IEEE 802.11MAC protocol with a single interface and a unique channel to transfer data. Thetrend to use multiple interfaces and multiple channels was only in mesh networksor in cellular networks. This paper is a state of art on multi-hop ad hoc networkswhere one uses more than one interface and more than one channel. We analyzedrecent advances concerning MAC protocols and adapted routing protocols. Thisdescription of related work is followed by a discussion on open research issuesrelated to this theme. We focus on throughput oriented approaches.III) Shinsue Kajioka, Naoki Wakamiya, Hiroki Satoh,Kazuya Monden, MasatoHayashi,Susumu Matsui, and Masayuki Murata.”Implementation and Evaluationof Multichannel Multi-Interface Routing Mechanism with QOS-Consideration for Ad-Hoc Networks”, Hindawi publishing Corporationjan-2010. Description: To accommodate real-time multimedia application whilesatisfying application-level QoS requirements in a wireless ad-hoc network, weneed QoS control mechanisms. We proposed a new routing mechanism for awireless ad-hoc network composed of nodes equipped with multiple networkinterfaces. By embedding information about channel usage in control messages ofOLSRv2, each node obtains a view of topology and bandwidth information of thewhole network. Based on the obtained information, a source node determines alogical path with the maximum available bandwidth to satisfy application-levelQoS requirements. In this paper, we evaluated feasibility of the proposal throughsimulation and practical experiments and confirmed that our proposal effectivelytransferred multimedia packets over a logical path avoiding congested links. 5) Project Description:Department of Information Science & Engg, BVBCET Page 2
  3. 3. B10 Project SynopsisWireless mesh networks (WMN): It is a self organized and self configurednetwork without centralized control, with the feature of multi-hop and limitedenergy.WMN consist of 3 types.Infrastructure: Clients gain access to each other through routers and are notactively involved in routing and forwarding of packets.Client: Clients can communicate with each other directly without involvingrouters.Hybrid: It is the combination of ‘Infrastructure’ and ‘Client’ type.Routing is a critical task in WMN as the nodes are moving. Routing protocols aredivided into 2 categories;Reactive protocols: Routes are established only when required by flooding of routerequest packet (RRP).Proactive routing protocols: Routes are established before the actual usage.OLSR (Optimized Link State Routing) : OLSR is proactive protocol. It uses 2 messages first, the HELLO messages& the second called as TC(topology control).The HELLO messages areperiodically sent so that each node can discover its neighbors. They advertise thelinks between a MPR (Multi-Point Relay) node and each of its neighbors that hasselected it as an MPR.Only MPR nodes are allowed to periodically broadcast orrelay TC messages so that all nodes can have a global topological view of thenetwork. MPRs are periodically selected by each node and their identities arenotified through hello messages.Thus, hello messages advertise MPR node identities and build up one-hop routingtable for each node. Then, TC messages allow nodes to complete computing oftheir routes towards any destination in the network by advertising vicinity links ofMPRs.The enhancement of existing OLSR protocol, to provide the features of MIMC, thefollowing are considered.1) Channel quality evaluation.Department of Information Science & Engg, BVBCET Page 3
  4. 4. B10 Project Synopsis Evaluated by neighbor-hood channel discovery, channel state notification (byconsidering a particular nodes load, its availability & packet error rate).2) Channel selection There are a set of channels for each node to be shared. The HELLO messagescontain set of channels shared & those which are not currently in use.Corresponding evaluating metric (such as cost, delay etc) for the channels, are alsoknown. So a channel is selected which has least cost.)3) Enhanced Routing metric to be considered are channel alternation, channelquality, Hop number. 6) Software specifications: i) NS-2 simulator ii) C++ iii) Plug in to support multiple-interface in NS-2. 7) Feasibility study: i. Implementation can be done in c++ and NS-2, which we are already familiar with, so the project is technically feasible. ii. Plug in required to support multiple -interface multi-channel is already available. 8) Team information: Batch Roll no USN Name SignatureDepartment of Information Science & Engg, BVBCET Page 4
  5. 5. B10 Project Synopsis B10 97 2BV07IS042 Naveen. V. Kamkar 81 2BV07IS003 Abhishek Desai 102 2BV07IS049 Pakeerappa 131 2BV07IS117 Vinaykumar. Holeppagol 133 2BV08IS401 Anuradha. BangaloreDepartment of Information Science & Engg, BVBCET Page 5