Ad hoc network orientation route method based on cross-layer design

Abstract

The invention relates to a self-organizing network oriented route method based on the over-layer design, belonging to the wireless self-organizing network technique. The invention comprises two steps as route search and route maintenance designed over-layer. Wherein, the over-layer design comprises: the construction and the usage of 'code-direction' list; the over-layer alternate cooperation between network layer, medium visit-control minor layer and physical layer; and the demand control on the grouping transmission direction. The invention uses the demand rule to operate the route search and the route maintenance; and uses the omnidirectional transmission in the broadcast and the oriented transmission in single broadcast according to the broadcast / single broadcast of control grouping. The invention can reduce the grouping collision coursed by hided terminal and the unnecessary waiting coursed by exposed terminal, and it can improve the application of channel bandwidth and the property of network. In addition, the over-layer alternate cooperation is mainly processed between the MAC layer and the physical layer and the affected layers is few, so the operation can be realized simply and reliably; and the demand route protocol can supply the saving consumption and the efficiency improvement. The invention can be used in wireless self-organizing network, sensor network, wireless local network and the wireless access.

Description

technical field [0001] The present invention belongs to the field of ad hoc network technology, such as wireless ad hoc network, sensor network, wireless local area network, wireless access, etc., and especially relates to the routing technology of wireless ad hoc Internet. Background technique [0002] Ad hoc network is a combination of mobile communication and computer network. The terminal nodes in the network can move freely in the network, and the network topology changes frequently. Each user node has both router and terminal functions. Portable mobile nodes usually rely on batteries to provide energy, and the transmission power is limited, and sometimes multi-hop forwarding is required to achieve communication. When working on the same-frequency shared wireless channel, problems such as hidden terminals and exposed terminals caused by multi-hop forwarding will reduce the success rate of packet transmission and waste available bandwidth. Ad hoc network nodes need to ...

AI Technical Summary

Problems solved by technology

[0009] Existing routing methods based on cross-layer design have complex calculation and implementation problems. They do not involve much cross-layer information sharing and collaborative operation between the MAC layer and the physical layer. There is no effective solution to the problem of exposed terminals, and additional communication overhead will be brought in the process of route establishment and maintenance, and the energy protection of nodes is less considered

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