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A random access method and device

A technology of random access and random access process, applied in wireless communication, electrical components and other directions, can solve the problem of user equipment error parsing response information and so on

Active Publication Date: 2022-04-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, when receiving the response information of the 2-step random access process, the terminal-side device may still have the response information of the 4-step random access process, which may cause the user equipment to misinterpret the response information of the 2-step random access process.

Method used

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  • A random access method and device

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Experimental program
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Embodiment Construction

[0106] Embodiments of the present application provide a random access method and device, which are applied to a mobile communication network, for example, to a mobile communication network supporting multiple radio interface technologies (radio interface technology, RIT).

[0107] image 3 A schematic diagram of a communication system to which the technical solution provided by the embodiment of the present application is applied is given, and the communication system may include a network-side device 100 and one or more terminal-side devices 200 connected to the network-side device 100 ( image 3 Only 1 shown). Data transmission can be performed between the network-side device and the terminal-side device.

[0108] The network-side device 100 may be a device capable of communicating with the terminal-side device 200 . For example, the network side device 100 may be a base station, and the base station may be a base transceiver station (BTS) in global system for mobile commu...

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Abstract

Embodiments of the present application provide a random access method and device, which relate to the communication field and can prevent terminal-side equipment from misparsing a response message of a random access process. The method is as follows: the terminal side device receives the first configuration parameter of the first random access procedure from the network side device, the first configuration parameter includes the identifier of the first search space and the configuration of the first uplink resource; the terminal side device sends the first configuration parameter to the network side device Send the first random access request and use the first uplink resource to send the first uplink data; the terminal side device detects the downlink control information carried in the first search space according to the identifier of the first search space, or detects the first random access information according to the first RNTI Downlink control information corresponding to the access process; the terminal-side device receives response information on the resources indicated by the downlink control information, and the response information is the first random access response to the first random access request or the response to the first uplink data . The embodiment of the present application is applied to a random access process.

Description

technical field [0001] The present application relates to the field of wireless communication, and in particular to a random access method and device. Background technique [0002] In a wireless communication system, a terminal-side device can use a 4-step random access process to access a base station. Such as figure 1 As shown, the 4-step random access process includes step S1, the terminal side device selects the preamble index (preamble index) and the physical random access channel (physical random access channel, PRACH) used to send the preamble (preamble) resource, and send the preamble on that resource. S2. The base station sends a random access response (random access response, RAR) to the terminal-side device. S3. The terminal side device sends a third message (message3, Msg3) to the base station according to the random access response, where Msg3 includes uplink data. S4. The base station sends a fourth message (message4, Msg4) to the terminal-side device, wher...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/00H04W74/08
CPCH04W74/0833H04W74/002H04W74/00H04W74/08
Inventor 徐小英黄曲芳酉春华范强郭英昊娄崇
Owner HUAWEI TECH CO LTD