A Routing Method for Mobile Ad Hoc Networks Aided by Location Information

Abstract

The present invention relates to a mobile ad hoc network routing method assisted by positioning information, which includes: route discovery and route maintenance; route discovery establishes a route from a source node to a destination node; route maintenance includes: If the node still has not received the path response packet RREP about the destination node at the end of the discovery period, it will send the improved path response packet REER about the destination node to its neighbor nodes; the intermediate node receiving the path response packet REER will send the local routing table Include the route of the unreachable destination node described by the RERR packet as invalid, and broadcast to its neighbor nodes; until the path response packet RERR reaches the source node, the source node restarts the route discovery process after receiving the path response packet RRER.

Description

technical field [0001] The invention relates to a routing method, in particular to a positioning information-assisted mobile ad hoc network routing method. Background technique [0002] Mobile ad hoc (Ad Hoc) network is a multi-hop temporary autonomous network composed of a group of mobile terminals with wireless transceiver devices. The nodes in the network not only have the functions required by ordinary mobile terminals, but also have routing functions. , when the source node and the destination node of the communication are not within the direct communication range, the nodes can communicate through the multi-hop method of message forwarding. Because the mobility of nodes in the network will lead to constant changes in the network topology, coupled with the requirements of improving terminal endurance, reducing system bandwidth consumption, and adapting to unidirectional channel environments, traditional Internet routing protocols, such as Routing Information Protocol (R...

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Problems solved by technology

By using location information, the connection time of the network is reduced and the operating efficiency of the network is improved, but the premise of these benefits is to have a global control center, which becomes the central node of the network. This structure violates the ad hoc network without a center. 1. The basic principle of equality of all nodes in the network, in situations where there is no infrastructure support such as emergency and combat, it is impossible to take advantage of the independence and autonomy of the wireless ad hoc network network; secondly, the generation of routing information by the control center requires each D2D terminal All devices can be connected to the control center. If the D2D terminal device accesses the control center in one hop, the coverage of the control center is very limited, and the network does not have topology variability; if the D2D terminal device accesses the control center in a multi-hop manner Center, where does the initial routing information come from? This patent also does not describe

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