Method, system and equipment for switching operating frequency of cells

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...

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 a random access operation after receiving the handover command, and when the cell switches the operating frequency, if the UE in the entire cell needs to perform random access, due to the random access code (RACH Preamble) is only 64, so the existing handover method will also cause a large number of access conflicts, resulting in service interruption and performance degradation

[0008] In short, the existing technology cannot solve the problem that the base station and the UE in the cell switch the working frequency at the same time in the CR scenario

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