Cross-layer Routing Method Based on Energy Optimization and Network Lifetime in Cognitive Radio Cellular Networks

A cognitive radio and cellular network technology, which is applied in the field of routing in cognitive radio networks, can solve problems such as node failure, network performance degradation, and network failure, and achieve the effects of persistent energy, promoting fairness, and powerful computing capabilities
CN103179632BActive Publication Date: 2016-06-29COMM ENG COLLEGE SCI & ENGINEEIRNG UNIV PLA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
COMM ENG COLLEGE SCI & ENGINEEIRNG UNIV PLA
Publication Date
2016-06-29

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Abstract

The invention discloses a cross-layer routing method utilized in a cognitive radio cellular network and based on energy optimization and network lifetime, and relates to the cognitive radio field in wireless communication technology. The cross-layer routing method has the advantages that new routing metrics are provided specific to characteristics that various cognitive users in the cognitive radio cellular networks have different dynamic spectrum resources and energy of wireless cognitive nodes is limited, route selection and channel assignment in the cognitive network are considered in a combined manner by the aid of a cross-layer technology, a priority algorithm for the shortest path is modified, the problem that load on individual nodes is excessively high, energy is used up in advance and the individual nodes fail are solved, death time of each node is delayed, the lifetime of the network is prolonged, large quantities of relay nodes can be selected as cognitive nodes owing to large quantities of available effective nodes, accordingly, the average energy consumption is reduced integrally, and a communication access success rate is increased.
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Description

technical field

[0001] The present invention relates to the field of cognitive radio in wireless communication technology, and specifically relates to a new route selection method in a cognitive radio network by combining cross-layer technology, applying an improved link state routing algorithm and a new dynamic routing metric method. Background technique

[0002] At present, with the continuous improvement of the demand for wireless communication and the rapid growth of the types of wireless communication services, people's demand for wireless spectrum resources is also increasing exponentially, which makes the "spectrum scarcity" problem in wireless communication and the existing fixed spectrum allocation scheme The contradiction between inefficient distribution has become increasingly prominent. Cognitive radio technology, as an emerging technology aimed at improving spectrum utilization efficiency, can allow cognitive users or secondary users (SU) to dynamically The ac...

Claims

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