Method, system and equipment for switching operating frequency of cells

A technology of working frequency and cell handover, applied in electrical components, wireless communication, etc., can solve problems such as service interruption, handover failure, and performance degradation, and achieve the effect of reducing service interruption time and avoiding random access conflicts

Active Publication Date: 2012-07-11
CHINA MOBILE COMM GRP CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, in the process of switching the working frequency of the cell in the CR scenario, since the base station also needs to switch to the new working frequency, after the base station stops working on the original working frequency, it will take a while to start working on the new working frequency. If a command to switch to a new working frequency is sent to the UE on the working frequency, the UE will not be able to find the cell, resulting in a handover failure
[0007] Moreover, according to the existing handover scheme, the UE needs to perform

Method used

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  • Method, system and equipment for switching operating frequency of cells
  • Method, system and equipment for switching operating frequency of cells
  • Method, system and equipment for switching operating frequency of cells

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Embodiment Construction

[0039] In the CR scenario, when the cell changes the working frequency, since the UE is still in the same cell, the system information (except the working frequency information), the RRC connection, the UE context (UE context), and even the radio resource configuration may not change. And when the handover delay is not too long, no timing adjustment is required. Therefore, the UE can omit the random access process and directly start communication on the new working frequency.

[0040] figure 1 It is a flow chart of the method for cell switching working frequency provided by the present invention.

[0041] Such as figure 1 As shown, the method includes:

[0042] In step 101, the UE receives a command to switch to a new working frequency, and the command carries a switching time T2.

[0043] In this step, the command to switch to the new working frequency is issued by the base station to the UE through a broadcast message or dedicated signaling, and the time T2 carried in it...

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Abstract

The embodiment of the invention discloses a method, system and equipment for switching operating frequency of cells. The method comprises the following steps: a command which carries switching time T2 and used for switching to a new operating frequency is received by user equipment (UE); and from T2, the UE operates at the new operating frequency directly without fulfilling a random access process. The system consists of a base station and the UE. The base station sends the command which carries switching time T2 and used for switching to the new operating frequency to the UE and the UE receives the command for switching to the new operating frequency and operates at the new operating frequency directly from T2 without fulfilling the random access process. By adopting the method, the system and the equipment, the UE is capable of rapidly accessing a new operating frequency without random access conflict and business disruption time of the UE is reduced to the greatest extent.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to a method, system and equipment for cell switching working frequency. Background technique [0002] In the scenario where the mobile communication system uses the cognitive radio technology to share spectrum resources (CR) with other spectrum licensing systems, when the spectrum licensing system re-occupies the frequency resources, the cell of the mobile communication system needs to switch the working frequency, that is: the cell in the mobile communication system The base station and the UE need to stop communication on the original working frequency, and then establish communication on a new idle frequency. [0003] In the process of switching the working frequency of the cell, the base station and the UE need to spend a certain amount of time switching the working frequency, which is used for the base station and the UE to change the radio frequency and perform relate...

Claims

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Application Information

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IPC IPC(8): H04W36/06
Inventor 陈星高有军胡南
Owner CHINA MOBILE COMM GRP CO LTD
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