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Method, device and system for realizing cell switch based on CR (Cognitive Radio)

A cell switching and current cell technology, applied in the field of cognitive radio, can solve problems such as not meeting the technical performance index requirements of CR, and achieve the effect of ensuring service continuity, avoiding interference, and improving service quality

Inactive Publication Date: 2012-05-16
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the mobile communication system and terminals deployed in the cognitive frequency band work completely according to the existing design scheme, they will not be able to meet the performance index requirements of CR technology

Method used

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  • Method, device and system for realizing cell switch based on CR (Cognitive Radio)
  • Method, device and system for realizing cell switch based on CR (Cognitive Radio)

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Embodiment Construction

[0033] When the mobile communication system is deployed in the cognitive frequency band, in order to prevent the UE (user terminal) from causing interference to the authorized users on the cognitive frequency band, in this embodiment of the present invention, when the authorized user appears in the working frequency point currently used by the UE, it has The base station with cognitive function (hereinafter referred to as the cognitive base station) needs to quickly withdraw the UE from the currently used working frequency and switch the UE to the new working frequency, specifically:

[0034] The cognitive base station improves spectrum detection, obtains the spectrum detection result, and determines the target operating frequency point according to the spectrum detection result when it is determined that there is an authorized user connected to the operating frequency point used by the current cell according to the spectrum detection result, and uses the RRC connection The rec...

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Abstract

The invention relates to the field of communication and discloses a method, a device and a system for realizing cell switch based on CR (Cognitive Radio). In the method, when the access of an authorized user to a working frequency point of a current cell is determined, a target working frequency point determined according to a frequency spectrum detection result is transmitted to UE (User Equipment) resided in the current cell by a cognitive base station through an RRC (Radio Resource Controller) connection reconfiguration message, so that the UE can quickly and accurately exit from the current cell and is switched to a target cell using the target working frequency point, further the interference of the UE on the authorized user is avoided, the service continuousness of the system is ensured, the performance indication requirement of a mobile communication system during adoption of a CR technology is met and the service quality of the system is improved. The invention also discloses the corresponding device and the corresponding system.

Description

technical field [0001] The present invention relates to cognitive radio technology, and in particular, to a method, device and system for realizing cell handover. Background technique [0002] As a precious natural resource, wireless spectrum resources are definite and limited. With the development of wireless communication technology, the contradiction between the increasing demand for broadband wireless communication and the limited spectrum resources is becoming more and more obvious. At present, through technical improvements, although the utilization rate of spectrum resources can be improved to a certain extent, it is still unable to meet the system's demand for spectrum resources. From the perspective of signal propagation characteristics, the spectrum resources of the low-frequency band have incomparable advantages over the spectrum resources of the high-frequency band. In the existing spectrum resources, high-quality spectrum resources (such as low-frequency wirel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00H04W36/04H04W76/02
Inventor 高秋彬肖国军胡金玲潘学明王立波杨宇白文岭蒋成钢
Owner CHINA ACAD OF TELECOMM TECH
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