Method for managing fixed time difference information of micro cell and macro cell

Abstract

The invention provides a method for managing fixed time difference information of a micro cell and a macro cell, a collection node, a micro cell base station and a system. The method, the collection node, the micro cell base station and the system enable the fixed time difference information of the micro cell which is adjacent to the macro cell and is provided with the same primary scrambling code (PSC) and the macro cell to be unique, and user equipment (UE) is guaranteed to be converted to a target micro cell successfully. The method for managing the fixed time difference information of the micro cell and the macro cell comprises the following steps: the collection node receives the fixed time difference information of the micro cell and the macro cell adjacent to the micro cell from the micro cell base station, the fixed time difference information comprises time difference of the micro cell and the macro cell adjacent to the micro cell, or the fixed time difference information comprises a frame timing of the micro cell and a frame timing of the macro cell adjacent to the micro cell, and if the fixed time difference is larger than a preset first fixed time difference threshold value, the collection node sends instruction information for adjusting a frame clock value to the micro cell base station or sends reconfiguration information for reconfiguring at least part of fixed time difference parameters of the micro cell to the micro cell base station. The method for managing the fixed time difference information of the micro cell and the macro cell is applicable to the technical field of communication.

Description

Technical field [0001] The present invention relates to the field of communication technology, and in particular to a method for managing the timing difference between a micro cell and a macro cell, a convergence node, a micro cell base station and a system. Background technique [0002] In order to meet the requirements for seamless coverage of communication networks, a Heterogeneous Network (Hetnet) has been proposed in the prior art. The Hetnet network is a network composed of cells of different sizes and types, such as Macro cell, Micro cell and Pico Cell. The base station of the macro cell manages multiple cells and micro cells. A base station such as a pico cell manages only one cell. [0003] In the WCDMA communication network system, there are 512 primary scrambling codes (PSC) in the downlink in the WCDMA system, and each cell is assigned a PSC as one of the identification parameters of the cell. The micro cell of the WCDMA communication system uses a limited number of P...

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Problems solved by technology

[0004] However, the frame timing of the base station of the target micro cell and the macro cell may drift, so the timing difference between the frame timing of the base station (Base Station, BS) of the target micro cell and the frame timing of the base station of the macro cell may also change, thus cause the timing difference between a macro cell and a micro cell with the same PSC may be the same

When using information such as the PSC of the target micro cell, the timing difference between the target micro cell and the macro cell to determine the target micro cell, the timing difference information between the micro cell with the same PSC and the macro cell where the UE is located is not unique, resulting in a small The gateway of the cell cannot confirm the target micro cell, and thus the UE cannot be handed over to the target micro cell

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