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Synchronization signal transmission method and base station

A technology of synchronization signal and transmission method, applied in the field of communication, can solve the problems such as terminal inability to demodulate downlink synchronization signal, service interruption, handover failure, etc.

Active Publication Date: 2021-07-20
CHENGDU TD TECH LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiments of the present invention provide a synchronization signal sending method and a base station, which are used to solve the above solution. The terminal cannot demodulate the downlink synchronization signal arriving from the neighboring cell, let alone initiate measurement on the neighboring cell, which may easily cause handover failure, business interruption problem

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  • Synchronization signal transmission method and base station
  • Synchronization signal transmission method and base station
  • Synchronization signal transmission method and base station

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Embodiment Construction

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0049] figure 1 It is a schematic diagram of a handover scenario of a UE between a primary cell and a neighboring cell. Such as figure 1 As shown, when a terminal device (or terminal, UE, etc.) is in the handover zone, when the distance between the adjacent cell to the terminal and the distance from the service area to the terminal are too large...

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Abstract

The present invention provides a method for sending a synchronization signal and a base station. The method includes: the base station acquires a downlink synchronization signal, and the base station sends the downlink synchronization signal to a terminal device after a pre-configured compensation delay, so that the terminal The device detects the downlink synchronization signal within the search window. That is, by actively configuring the compensation delay on the base station of the neighboring cell, so that when the base station sends a downlink synchronization signal to the terminal, the distance between the terminal and the base station is compensated by the compensation delay, without changing the hardware , eliminating the distance difference between the base station of the adjacent cell and the base station of the main cell, and avoiding the problem that the terminal equipment cannot detect the synchronization signal sent by the base station of the adjacent cell.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a method for sending a synchronization signal and a base station. Background technique [0002] In the Long Term Evolution (LTE) system, in order to support the mobility management of the terminal, that is, User Equipment (UE), and ensure the continuity of the terminal service, the UE in the process of moving will constantly search for neighbors. Cell, obtain synchronization and estimate the reception quality of the cell signal, so as to decide whether to switch or cell reselection. Therefore, from the perspective of the UE handover process, detecting and searching downlink synchronization signals of adjacent cells is a prerequisite for subsequent adjacent cell measurement actions, which are mainly divided into primary synchronization signal detection and secondary synchronization signal detection. After the uplink synchronization and terminal transmission ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W36/14H04W56/00
CPCH04W36/0083H04W36/14H04W56/0045H04W88/08
Inventor 陈嘉
Owner CHENGDU TD TECH LTD
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