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Method and device for determining TA of terminal equipment

A technology of terminal equipment and determination method, which is applied in the field of communication, and can solve the problem that terminal equipment cannot use satellite base stations, etc.

Active Publication Date: 2021-12-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a TA determination method and device for terminal equipment to solve the problem in the prior art that the TA determination method for terminal equipment cannot be applied to satellite base stations

Method used

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  • Method and device for determining TA of terminal equipment
  • Method and device for determining TA of terminal equipment
  • Method and device for determining TA of terminal equipment

Examples

Experimental program
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Embodiment Construction

[0129] figure 1 It is a schematic diagram of a communication system applied in the prior art. like figure 1 The communication scene shown includes: terminal device A, terminal device B, and access network equipment. After establishing a communication connection with the access network equipment, the terminal equipment can further communicate with the core network through the access network equipment. For example, in figure 1 In the example shown, it shows that when the access network device is base station E, within the coverage of base station E, both terminal device A and terminal device B can access base station E, and through the established wireless connection relationship Communicate with base station E. The communication includes: the terminal equipment sends uplink communication data to the base station, and the base station sends uplink communication data to the terminal.

[0130] In the prior art, when the distance between the terminal device and the base station...

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Abstract

This application provides a TA determination method and device for a terminal device. When the terminal device receives the TA adjustment parameter sent by the access network device and determines that its TA needs to be adjusted, it determines the TA scaling factor, the subcarrier spacing parameter and the first TA, The second TA is obtained by jointly adjusting the first TA. Due to the addition of the TA adjustment parameter k when the terminal device determines the second TA, the TA can be adjusted in a larger range, so it can be applied to determine the TA of the terminal device when the terminal device communicates with the satellite base station, so that the terminal device can be controlled by the terminal device In the case of equipment movement caused by itself and the satellite base station, the TA is adjusted.

Description

technical field [0001] The present application relates to the communication field, and in particular to a method and device for determining a timing advance (timing advance, TA) of a terminal device. Background technique [0002] When a terminal device communicates with an access network device (eg, a base station), if the distance between the terminal device and the access network device is relatively long, the uplink communication data sent by the terminal device to the access network device will have a large transmission delay. Therefore, the access network device will set a timing advance (TA) for the terminal device, so that the terminal device can obtain the first time of receiving the downlink communication data of the access network device through TA, and communicate with the terminal device to access The negative offset (negative offset) between the second times when the network equipment sends the uplink communication data. Furthermore, the terminal device can sen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00
CPCH04W56/0045H04B7/1853H04L27/26025H04W74/006H04W74/0833
Inventor 陈莹罗禾佳李榕王俊
Owner HUAWEI TECH CO LTD