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Transmission timing determination method, user equipment, base station and storage medium

A transmission timing and determination method technology, applied in wireless communication, synchronization device, network topology, etc., can solve problems such as unsatisfactory

Pending Publication Date: 2022-07-19
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0027] The present invention provides a transmission timing determination method, user equipment, base station and storage medium to solve the problem that the existing technical solutions related to NR only support the closed-loop TA update mode in the connected state, so they cannot meet the needs of some scenarios

Method used

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  • Transmission timing determination method, user equipment, base station and storage medium
  • Transmission timing determination method, user equipment, base station and storage medium
  • Transmission timing determination method, user equipment, base station and storage medium

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Embodiment Construction

[0302] During the process of the invention, the inventors noticed:

[0303] The existing technical solutions involving NR only support the closed-loop TA update mode in the connected state, however, in some NTN scenarios, it is necessary to support the TA update mode combining open-loop and closed-loop.

[0304] as in image 3 In the shown TA pre-compensation scheme based on UE position, ephemeris, and network indication information, due to the rapid movement of the satellite (possibly a LEO (Low Earth Orbit Satellite) satellite) and the UE (possibly on an airplane) , the propagation delay of the service link changes rapidly. Moreover, it is difficult for the base station to grasp the motion trajectory of the UE. Therefore, letting the UE autonomously update the TA component of the service link will effectively improve the TA compensation accuracy.

[0305] On the other hand, the TA adjustment amount indicated by the network may need to indicate both the TA change amount an...

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Abstract

Disclosed are a transmission timing determination method, user equipment and a storage medium, comprising: a UE determining the transmission timing of the UE according to a parameter autonomously determined by the UE and a TA adjustment signaling indicated by a network. By adopting the method and the device, open-loop and closed-loop TA adjustment requirements can be supported, the problem that only a closed-loop TA updating mode in a connected state is supported and the requirements of some scenes cannot be met is solved, and frequent transmission of TA adjustment commands by a network side can be avoided.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and in particular, to a transmission timing determination method, user equipment, base station and storage medium. Background technique [0002] To meet the demand for ubiquitous wireless coverage, 5G systems need to support the convergence of terrestrial and satellite networks. To this end, 3GPP is carrying out NTN (Non-terrestrial network) standardization research work, hoping to: [0003] Provide cost-effective coverage for un-served areas (ocean, aircraft, underwater) in 5G deployments; [0004] Strengthen the reliability of 5G network: improve the continuity of high-speed M2M (Machine to Machine) / IoT (Internet of Things, Internet of Everything) services, and provide communication and emergency communication guarantees in extreme environments; [0005] Ensure 5G network scalability and provide effective multicast / broadcast resources for the network edge. [0006] Acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04W84/06
CPCH04W56/0055H04W84/06
Inventor 柯颋郑毅王飞胡南李男
Owner CHINA MOBILE COMM LTD RES INST