Uniting switch method based on speed self-adaption in isomerism cognition radio network

Abstract

The invention requests for protecting a uniting switch method based on speed self-adaption in an isomerism cognition radio network. The invention relates to the field of wireless communication. Due to the fact that the switch problem is produced by the movement of the position of a secondary level user, the invention provides the uniting switch method of frequency spectrum broker auxiliary selecting network and secondary level user terminal controlling switch. Attribute weight is obtained based on the layer analysis method by the frequency spectrum broker on a network side, thus the network is selected. The switch controlling method of the speed self-adaption is provided on a terminal side, thus the switch from an original network to the target network is controlled. Different switch judgment threshold methods are provided according to different switch types. According to the uniting switch method based on speed self-adaption in an isomerism cognition radio network, a suitable network can be selected according to business requirements and network conditions of the secondary level user. Switch is well controlled. Switch times and suspending probability of the secondary level user are reduced. Switch performance of the secondary level user is improved.

Description

technical field [0001] The present invention mainly relates to the field of wireless communication, in particular to the spectrum switching problem in the heterogeneous cognitive radio network. Background technique [0002] With the rapid development of wireless communication technology and the continuous increase of people's needs, the traditional single network can no longer meet the requirements, and the fusion technology of multiple heterogeneous wireless networks is becoming a research hotspot. With the rapid development of research on cognitive radio networks, the demand for heterogeneous wireless networks is becoming more and more obvious. If secondary users move from one place to another, spectrum handover between heterogeneous networks may be performed due to changes in available frequency bands. [0003] In a heterogeneous wireless network, the vertical handover decision between networks is a key technology. The existing vertical handover judgment methods mainly ...

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Problems solved by technology

However, the coefficients in the control conditions simply take fixed values, which are not changed according to the actual situation, which does not match the actual network environment.

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