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Distributed cognitive radio network two-way channel reservation link constructing method

A cognitive radio and two-way channel technology, applied in the field of cognitive wireless networks, can solve the problem of less research on channel reservation for multi-hop two-way service transmission

Inactive Publication Date: 2010-10-27
CHONGQING TELECOMMUNICATION INSTITUTE
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Problems solved by technology

[0004] Due to the dynamic nature of available channel resources in cognitive radio networks, there are relatively few studies on channel reservation for multi-hop bidirectional service transmission with quality of service requirements in existing wireless networks, especially for multi-hop voice transmission in a distributed environment There is no literature report on the method of channel reservation and link establishment for two-way transmission services

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  • Distributed cognitive radio network two-way channel reservation link constructing method
  • Distributed cognitive radio network two-way channel reservation link constructing method
  • Distributed cognitive radio network two-way channel reservation link constructing method

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Embodiment Construction

[0061] Combine below figure 2 A specific implementation method of this patent in a distributed cognitive wireless network is given. Taking the channel reservation when establishing a link between node i and node (i+1) as an example, an algorithm is used to establish a preferred channel reserved for a two-way voice link for an intermediate node.

[0062] The 8 nodes in the figure correspond to the 8 users in the routing table from the source node to the destination node in the network, respectively use s, i-2, i-1, i, i+1, i+2, i+3, d to indicate that the channel reserved by node i when establishing a two-way voice link should be found through an algorithm, and so on, and then establish a two-way service transmission link and its channel reservation from the source node to the destination node. There are 10 available channels in the network, namely TS 0 、TS 1 、TS 2 …TS 10 .

[0063] The source node s searches for the route to the destination node d by sending a route req...

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Abstract

The invention discloses a distributed cognitive radio network two-way channel reservation link constructing method which belongs to the technical field of cognitive radio networks, and mainly comprises the following steps: a node uses the perceptive capability of a radio terminal to spectrum holes, adopts the idea that a predecessor link reserves a public channel for a subsequent link as possible, reserves and distributes the channel resources of each link in a router from a source node to a target node hop by hop through a conflict prevention channel selection method, and establishes a two-way business transmission path from the source node to the target node. The method realizes channel pre-reservation and distribution in router selection, reduces collision and conflict, realizes the high-efficiency reuse of network resources, provides service quality ensuring capability for two-way multi-hop business transmission under the distributed environment, is applicable to cognitive radio networks, distributed multi-hop networks, wireless local are networks, next generation of heterogeneous networks and other application occasions.

Description

[0001] Technical field: wireless network channel resource allocation, multi-channel access [0002] The present invention belongs to the field of cognitive wireless network technology, such as cognitive radio network, distributed multi-hop network, wireless local area network, wireless access, etc., and particularly relates to the channel allocation technology of cognitive radio network. Background technique: [0003] The distributed cognitive radio network is composed of peer-to-peer nodes with sensing functions. Each node can perceive idle spectrum resources, and use idle spectrum resources for communication without interfering with authorized users, so as to improve the efficiency of spectrum resources. utilization rate. The distributed cognitive radio network two-way channel reservation link building method is based on the business characteristics of two-way voice communication with service quality assurance requirements, and on the basis of making full use of the cognitiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/04H04W40/04H04W76/02
Inventor 郑相全葛利嘉张海呈马宝红卢明伦李瑞睿
Owner CHONGQING TELECOMMUNICATION INSTITUTE
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