Publication

Joint Synchronization, Routing and Energy Saving in CSMA/CA Multi-Hop Hybrid Networks

Jean-Pierre Hubaux
2004
Conference Papers

Abstract

Multi-hop hybrid networks can help providing both high bandwidth and broad coverage for wireless data networks. We focus on CSMA/CA-based networks and take IEEE 802.11 as a concrete example. We show that the three fundamental operations of synchronization, routing and energy saving can be implemented in an integrated way. Our integrated solution is based on the periodic computation of a broadcast tree among the nodes reporting to the same Access Point, starting from the Access Point itself. We use the nodes that are tree vertices as relays for both data and control packets. We propose a distributed neighbor discovery protocol and a simple centralized algorithm for computing the broadcast tree. Our analysis and simulation results show that the proposed solution has low protocol overhead in terms of message passing and execution time, and performs well even if nodes are mobile.

Official source

https://infoscience.epfl.ch/entities/publication/ea80956b-d918-41e4-8fa8-1436e4f3ef7b

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Jean-Pierre Hubaux
2004
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/ea80956b-d918-41e4-8fa8-1436e4f3ef7b

About this result

Related concepts (32)

Wireless mesh network

A wireless mesh network (WMN) is a communications network made up of radio nodes organized in a mesh topology. It can also be a form of wireless ad hoc network. A mesh refers to rich interconnection among devices or nodes. Wireless mesh networks often consist of mesh clients, mesh routers and gateways. Mobility of nodes is less frequent. If nodes constantly or frequently move, the mesh spends more time updating routes than delivering data.

Channel access method

In telecommunications and computer networks, a channel access method or multiple access method allows more than two terminals connected to the same transmission medium to transmit over it and to share its capacity. Examples of shared physical media are wireless networks, bus networks, ring networks and point-to-point links operating in half-duplex mode. A channel access method is based on multiplexing, that allows several data streams or signals to share the same communication channel or transmission medium.

Wireless ad hoc network

A wireless ad hoc network (WANET) or mobile ad hoc network (MANET) is a decentralized type of wireless network. The network is ad hoc because it does not rely on a pre-existing infrastructure, such as routers or wireless access points. Instead, each node participates in routing by forwarding data for other nodes. The determination of which nodes forward data is made dynamically on the basis of network connectivity and the routing algorithm in use.

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