Realization method of routing in accordance with requirements in cognitive wireless Ad Hoc network

Abstract

The invention relates to a realization method of routing in accordance with requirements in a cognitive wireless Ad Hoc network. The method comprises a route finding process, a route maintaining process and a data transmitting process. The method disclosed by the invention sufficiently considers the characteristics of the cognitive wireless Ad Hoc network, and selects an efficient and reliable path to realize the continuity of user communication, thereby guaranteeing the communication quality.

Description

technical field [0001] The invention relates to a cognitive wireless Ad Hoc network, in particular to a method for implementing on-demand routing in the cognitive wireless Ad Hoc network. Background technique [0002] The Ad Hoc network is a multi-hop temporary autonomous system composed of a group of mobile terminals with wireless transceiver devices, and the entire network has no fixed infrastructure. A mobile terminal in the network functions as both a host and a router. Because the Ad Hoc network has the characteristics of no center self-organization and flexible topology, this networking method is widely used in military communications, emergency services, sensor networks and other occasions. [0003] At present, with the rapid growth of demand for wireless communication services, available spectrum resources are becoming increasingly scarce. While trying to improve spectrum efficiency by adopting advanced wireless communication theories and technologies, such as link...

AI Technical Summary

Problems solved by technology

[0059] 2) Spectrum diversity: CR nodes may detect more wireless spectrum resources that can be used for communication within a period of time. Such a collection of rich spectrum brings new features to the communication of CR nodes. The AODV protocol is only applicable On a single frequency point Ad Hoc network

[0060] 3) Spectrum diversity: Spectrum resources used by nodes in a cognitive wireless Ad Hoc network are different, and each node cannot always know the wireless frequency band set that other nodes can use for communication, thus limiting Routing Protocol Design

[0061] 4) Lack of public control channels: In traditional multi-hop networks, public control channels are required to transmit local or global broadcast information, such as neighbor discovery, route discovery and other messages

[0062] 5) The problem of data forwarding: cognitive Ad hoc network is a multi-band network, a node may have multiple channels for data transmission; at the same time, a node may be an intermediate node of multiple paths, and multiple business data must be forwarded flow

In this way, the multi-service data multi-band scheduling problem of the node is generated.

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