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Method for cell handover in TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system and device for cell handover in TD-SCDMA system

A TD-SCDMA and cell handover technology, applied in the field of cell handover of TD-SCDMA system, can solve the problems of high RSCP measurement value and wrong cell handover, etc., to avoid wrong cell handover, avoid demodulation quality deterioration, and ensure UE performance and call quality effects

Active Publication Date: 2012-04-04
LEADCORE TECH
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Problems solved by technology

[0005] In view of this, the present invention provides a method and device for cell handover in a TD-SCDMA system, which solves the problem in the prior art that the RSCP measurement value is too high due to interference on the cell frequency point, resulting in cell handover by mistake

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  • Method for cell handover in TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system and device for cell handover in TD-SCDMA system
  • Method for cell handover in TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system and device for cell handover in TD-SCDMA system
  • Method for cell handover in TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system and device for cell handover in TD-SCDMA system

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[0047] For reference and clarity, descriptions, abbreviations or abbreviations of technical terms used in the following text are summarized as follows:

[0048]TD-SCDMA system: Time Division-Synchronous Code Division Multiple Access, time division synchronous code division multiple access system;

[0049] PCCPCH: Primary Common Control Physical Channel, the main public control physical channel;

[0050] Midamble: the training sequence in the TD-SCDMA system physical channel burst structure;

[0051] RSSI: Received Signal Strength Indicator, received signal strength indicator;

[0052] RSCP: Received Signal Code Power, received signal code power;

[0053] ISCP: Interference Signal Code Power, interference signal code power;

[0054] SIR: Signal to Intercell-Interference Ratio, signal to interference ratio;

[0055] SNR: Signal to Noise Ratio, signal to noise ratio;

[0056] UE: User Equipment, user equipment.

[0057] The following will clearly and completely describe the...

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Abstract

The invention discloses a method for cell handover in a TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system and a device for the cell handover in the TD-SCDMA system. The method comprises the following steps of: acquiring the RSCP (Received Signal Code Power) measured value of a current cell and the RSCP measured value of each neighbor cell of the current cell; selecting neighbor cells respectively with an RSCP measured value larger than that of the current cell as target cells to be handed over; determining the priority of each of the target cells to be handed over according to the size of the RSCP measured values corresponding to the target cells to be handed over; and determining handover target cells from the target cells to be handed over according to the priorities of the target cells to be handed over, and the size relationship among corresponding cell signal quality measured values and preset threshold values, and carrying out cell handover. In the invention, the RSCP measured values and the cell signal quality measured values are adopted to judge whether the neighbor cells of the current cell meet cell handover or not, thereby achieving the aim that the cell mistaken handover is avoided by using the cell signal quality measured values when the RSCP measured values are inaccurate or on the high side due to the fact that interference exists in a frequency point where the cell is located.

Description

technical field [0001] The present invention relates to the field of communication technology, and more specifically, relates to a method and device for cell switching in a TD-SCDMA system (Time Division-Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access system). Background technique [0002] In a communication system, when a user equipment moves from one cell (referring to a base station or the coverage area of ​​a base station) to another cell, in order to maintain the uninterrupted communication of the mobile user, channel switching is required, that is, cell switching is completed. Currently, in order to prevent erroneous handover between cells during cell handover, a measurement item for evaluating handover is used to determine a cell to which a UE (User Equipment, user equipment) finally performs handover. [0003] In the TD-SCDMA system, the measurement item used to evaluate handover is RSCP (Received Signal Code Power, ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/08H04W36/30
Inventor 郑未刘洪波俞忠兴
Owner LEADCORE TECH
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