A backup path routing for guaranteeing bandwidth in mobile ad hoc networks for multimedia applications

作者：Lee Kilhung^*

来源：Multimedia Tools and Applications, 2012, 57(2): 439-451.

DOI：10.1007/s11042-010-0699-4

• Backup path
• Quality of service
• Bandwidth
• Ad hoc routing

This paper suggests a backup path routing scheme in ad hoc networks for multimedia applications. A data path is established in an on-demand manner when there is a need to send data. A primary and a backup path are created as a result of a route control message exchange process. Each control message has additional information for guaranteeing the service quality. A backup path is configured around the primary path in multi-hop wireless networks. After detecting a failure when sending data, a repairing procedure occurs near the failed node of the primary path. The proposed scheme exploits the route request and reply information exchanged between nodes to create a backup path. Proposed backup routing scheme uses a one-hop search method, and the rerouted path length is two-hop at maximum. The service quality as measured by the error rate and delay is considered when establishing and repairing a route by making an allowance for the required bandwidth. Simulation results show that the proposed backup path routing scheme has a better data delivery ratio and an improved end-to-end data delay while guaranteeing the requested bandwidth for multimedia application.

• 出版日期2012-3