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Cell switching method and device

A communication method and target cell technology, which is applied in the field of cell switching, can solve the problems of reducing cell switching delay and increasing cell switching delay, and achieves the effects of reducing switching delay, reducing beam scanning, and reducing delay

Active Publication Date: 2019-02-26
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the current LTE RACH-less handover mechanism, the beam scanning of the base station and the terminal equipment will increase the cell handover delay. Therefore, a method is needed to reduce the beam scan delay, thereby reducing the cell handover delay

Method used

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  • Cell switching method and device

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Embodiment Construction

[0052] The technical solution in this application will be described below with reference to the accompanying drawings.

[0053] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: long term evolution (long termevolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), fifth generation (5th generation, 5G) mobile communication system or new radio (newradio, NR) communication system and future mobile communication system, etc.

[0054] figure 1 A communication system 100 to which the embodiment of the present application is applied is shown. The communication system 100 may include at least two radio access network devices (such as a network device 110 and a network device 120 ), and one terminal device (such as a terminal device 130 ). The terminal device is connected to the wireless access network device in ...

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Abstract

The invention provides a cell switching method and device. The method comprises the steps that: a target base station determines a beam of communication between the target base station and a terminaldevice through a first uplink resource set, specifically, by establishing a mapping relationship between an uplink resource set and a downlink beam, the target base station can determine the downlinkbeam where the terminal device is located through an uplink resource sent by the terminal device and performs downlink transmission on the downlink beam; or the target base station notifies the terminal device of an identifier or index information of an uplink beam where the uplink resource is located, and the terminal device selects the uplink beam for uplink transmission; or the target base station notifies the beam of communication between the terminal device and the target base station through a mapping relationship between the uplink resource and the beam or beam information included in DCI. According to the method, the beam scanning of the terminal device and the target base station can be reduced, and therefore, the switching delay of a cell switching process is reduced.

Description

[0001] This application is required to be submitted to the China Patent Office on August 10, 2017, the application number is 201710682182.9, and the application name is "RACH-less switching method and equipment in high frequency" and submitted to the China Patent Office on March 1, 2018, the application number is The priority of the Chinese patent application 201810171237.4, titled "RACH-less handover method and device in high frequency", the entire content of which is incorporated in this application by reference. technical field [0002] The present application relates to the communication field, and more specifically, to a cell handover method and device. Background technique [0003] In an existing cell handover procedure of a long term evolution (long term evolution, LTE) system, in order to reduce handover interruption time, a RACH-less handover mechanism is specified. Wherein, the target base station allocates a periodic uplink resource scheduling (uplink grant, UL gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/16H04W52/02
CPCH04W36/0005H04W36/16H04W52/0261Y02D30/70
Inventor 李国荣张莉莉
Owner HUAWEI TECH CO LTD