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Random access method, device and system

A technology of random access and random access response, applied in the field of communication

Active Publication Date: 2020-12-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present application provide a random access method, device, and system to achieve successful contention resolution or successful random access of terminal equipment in a multi-TRP scenario

Method used

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  • Random access method, device and system
  • Random access method, device and system
  • Random access method, device and system

Examples

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Embodiment Construction

[0065] figure 1 It is a schematic diagram of the communication system provided by the embodiment of this application. Such as figure 1 As shown, the communication system includes a network device and at least one terminal device, wherein the terminal device is within the coverage of the network device and communicates with the network device to implement the technical solutions provided by the following embodiments of the present application. The communication system in this embodiment can be applied to a multi-TRP scenario.

[0066] The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment. The network equipment and terminal equipment can work in licensed frequency bands or license-exempt frequency bands, where:

[0067] The terminal equipment may also be called user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, r...

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Abstract

Embodiments of the present application provide a random access method, device, and system, the method including: the terminal device determines the receiving parameters of the first data, and the first data is at least one of the following data: SS-block, PBCH, CSI-block RS, the downlink control information of the random access response and the random access response, etc.; the terminal device receives the contention resolution message through the above receiving parameters; the terminal device determines the success of the contention resolution of the random access or the success of the random access according to the contention resolution message . The present application can realize successful contention resolution or successful random access of terminal equipment for random access in a multi-TRP scenario.

Description

technical field [0001] The embodiments of the present application relate to communication technologies, and in particular to a random access method, device and system. Background technique [0002] In practical applications, the terminal device needs to obtain uplink time synchronization before transmitting uplink data. The uplink time synchronization is achieved by establishing a communication connection between the terminal device and the network device through a random access procedure (Random Access Procedure, RAP). [0003] The existing random access process includes the following steps: the terminal device sends a random access preamble (Msg1) to the network device; the terminal device receives the random access response (Msg2) sent by the network device; the terminal device sends a message 3 (Msg3) to the network device ; The terminal device receives a message 4 (Msg4) sent by the network device, that is, a contention resolution message. For example, the network dev...

Claims

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Application Information

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IPC IPC(8): H04W74/08
CPCH04W74/0833H04W48/08H04W74/08H04W76/11H04B7/0617H04B7/0626H04B7/086H04L5/0051H04W56/001H04W72/23H04W72/30
Inventor 娄崇酉春华黄曲芳
Owner HUAWEI TECH CO LTD
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