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Random access communication method, terminal and base station

A technology of random access and random access preamble, applied in the field of communication, can solve the problems affecting the reliability and timeliness of uplink data reporting, and achieve the effect of improving transmission reliability and ensuring timely transmission.

Pending Publication Date: 2022-01-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the LBT process fails, the uplink data cannot be transmitted to the eNB
Therefore, when the UE performs uplink transmission through an unlicensed spectrum cell, operating according to the existing process will affect the reliability and timeliness of uplink data reporting

Method used

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  • Random access communication method, terminal and base station
  • Random access communication method, terminal and base station
  • Random access communication method, terminal and base station

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Embodiment Construction

[0099] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0100] It should also be understood that in this embodiment of the present invention, a user equipment (User Equipment, referred to as "UE") may also be called a terminal, a mobile station (Mobile Station, referred to as "MS"), a mobile terminal (Mobile Terminal), etc. , the user equipment can communicate with one or more core networks via a radio access network (Radio Access Network, referred to as "RAN"), for example, the user equipment can be a mobil...

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Abstract

The embodiment of the invention provides a random access communication method. The method comprises the following steps: a terminal receives random access preamble information sent by a base station; then the terminal sends a random access response sent by the base station before the terminal receives random access to the base station according to the random access preamble information, the random access response comprises an uplink asynchronous hybrid automatic repeat request (HARQ) process identifier, and the uplink asynchronous HARQ process identifier is used for the terminal to send uplink data to the base station. Compared with the prior art, the communication method provided by the embodiment of the invention can ensure timely transmission of uplink data to a certain extent, and can effectively improve the transmission reliability of the uplink data.

Description

technical field [0001] Embodiments of the present invention relate to the communication field, and more specifically, relate to a random access communication method, terminal and base station. Background technique [0002] Long Term Evolution (LTE for short) system uses shared channel to send data, the same symbol signal is transmitted on different frequency resources, its fading and interference are not the same, and it is still changing . Cells that use licensed spectrum are called normal (Normal) cells (also called licensed cells). The frequencies used by these cells are officially authorized, so interference is controllable and data transmission is relatively reliable. [0003] Now, the 3rd Generation Partnership Project (3rd Generation Partnership Project, referred to as "3GPP") has introduced an assisted licensed access (License Assisted Access, referred to as "LAA") cell, which performs Carrier Aggregation (Carrier Aggregation, "CA" for short), and the LAA cell is g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08H04L1/18
CPCH04W74/0808H04W74/0833H04L1/1812H04W74/0838H04L1/1896
Inventor 酉春华黄曲芳郭轶
Owner HUAWEI TECH CO LTD