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CMR based on multichannel machine structure and frequency spectrum distribution method

A spectrum allocation and channel machine technology, applied in wireless communication, electrical components, network planning and other directions, which can solve the problems of prolonged user backoff, poor network performance, and small backoff delay.

Active Publication Date: 2010-11-10
PLA UNIV OF SCI & TECH
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Problems solved by technology

[0007] The purpose of the present invention is to propose a CMR and spectrum allocation method based on a multi-channel machine structure, according to the available different The capacity of spectrum resources and the perception results of each secondary user, in the case of satisfying the constraints, specify different available frequency bands for users, so that the average backoff delay of each secondary user is minimized

Method used

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  • CMR based on multichannel machine structure and frequency spectrum distribution method
  • CMR based on multichannel machine structure and frequency spectrum distribution method
  • CMR based on multichannel machine structure and frequency spectrum distribution method

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specific Embodiment approach

[0111] The core idea of ​​the present invention is that, according to the different channel qualities used by the channel machines, the starting point is to balance the load of each channel machine, to reduce the backoff delay of each secondary user, and to increase the chances of each secondary user to use the channel as a foothold. Spectrum allocation mechanism based on multi-channel machine structure. This mechanism includes three allocation strategies, which are respectively applicable to the spectrum resource allocation of each channel machine on the CMR and the spectrum resource allocation of the SMC. Its specific implementation is as follows:

[0112] As mentioned earlier, the mechanism designed in the present invention starts from a steady state. At this time, the channel used by each channel unit of the CMR is determined, and the channel perception of all SMCs within the coverage area is very clear.

[0113] In a circular area with a radius of 100 meters, the CMR is...

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Abstract

The invention relates to a CMR based on a multichannel machine structure and a frequency spectrum distribution method. The invention mainly comprises the following contents in three aspects: the function and entity constituent of a multichannel machine is determined, a frequency spectrum optimization method is put forward according to a frequency spectrum distribution scene; and a frequency spectrum distribution mechanism capable of utilizing multiple frequency ranges is put forward by combining with the frequency spectrum distribution entity of the multichannel machine structure. In addition, the state transition diagram of the frequency spectrum distribution mechanism is designed so that a secondary user can effectively obtain the available frequency spectrum in time, and the secondary user individual and cognitive network performance is improved.

Description

technical field [0001] The present invention relates to a network form in the field of cognitive radio (cognitive radio) and cognitive radio network (cognitive radio network) in wireless communication - cognitive wireless grid network, specifically a centralized scenario CMR and spectrum allocation method based on multi-channel machine structure. Background technique [0002] In a CogMesh network, the spectrum is constantly changing. The spectrum of change is divided into three types: static, dynamic and highly dynamic (opportunistic). Static spectrum means that the occupation time of the primary user frequency band is relatively static. From the perspective of secondary users, once a certain frequency band is available, it can be used for a long time. The dynamic frequency spectrum means that the cognitive radio can discover the available frequency band, however, the short available time seriously affects the service quality of the secondary users. The spectrum of oppor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/10H04W16/18
Inventor 吴启晖王金龙向啸田龚玉萍张玉明
Owner PLA UNIV OF SCI & TECH
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