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A method and device for repeated transmission

A technology of repeated transmission and transmission power, applied in the field of repeated transmission, can solve the problems of affecting detection, reducing detection reliability, and reducing the probability of successful decoding of UE

Active Publication Date: 2021-10-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pilot used for the initial transmission sent by UE2 is interfered by the pilot used for retransmission sent by UE1, which affects the detection of the initial transmission of UE2 by the base station
[0004] Since the decoding reliability of the UE's initial transmission is the highest, when a UE's initial transmission collides with other UE's retransmissions, the detection reliability of the UE's initial transmission may be reduced, thereby reducing the decoding success probability of the UE.

Method used

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  • A method and device for repeated transmission
  • A method and device for repeated transmission
  • A method and device for repeated transmission

Examples

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Embodiment Construction

[0059] Embodiments of the present application provide a method and apparatus for repeated transmission, which are applied in the process of repeated transmission, for example, in the process of uplink transmission of user equipment in grant-free mode.

[0060] Such as figure 2 As shown, it is a schematic diagram of a communication system architecture provided by an embodiment of the present application, including a network device (for example, a base station) and multiple user equipments (for example, UE1, UE2, and UE3). Each user equipment is configured to perform the first transmission of uplink data and send the first reference signal based on the first transmission power, wherein the first reference signal is used to demodulate the first transmission of uplink data; and perform the Nth transmission of uplink data and Sending a second reference signal to the network device based on the second transmission power, where N is an integer greater than or equal to 2; where the s...

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Abstract

Embodiments of the present application provide a method and device for repeated transmission, which relate to the field of communication and can improve the decoding success probability of user equipment. The method is as follows: the user equipment performs the first transmission of the uplink data and sends the first reference signal to the network device based on the first transmission power; wherein, the first reference signal is used to demodulate the first transmission of the uplink data; the user equipment performs the first transmission of the uplink data The Nth transmission and sending the second reference signal to the network device based on the second transmission power, N is an integer greater than or equal to 2; wherein, the second reference signal is used to demodulate the Nth transmission of uplink data; wherein, the second The transmission power is less than the first transmission power. The embodiment of the present application is applied in the uplink transmission process in the grant-free mode.

Description

technical field [0001] The present application relates to the field of communications, and in particular to a method and device for repeated transmission. Background technique [0002] In the third-generation mobile communication technology (3-generation, 3G) or the fourth-generation mobile communication technology (4-generation, 4G), the uplink transmission generally adopts the grant-based mode, that is, the user equipment (userequipment, UE) Before uplink transmission, the base station requests transmission resources and transmission parameters, and the base station determines transmission resources and transmission parameters based on the request, and issues them to the user equipment through control signaling. In the fifth-generation mobile communication technology (5-generation, 5G) communication, the industry has proposed a new transmission mode, that is, uplink transmission without dynamic scheduling, also known as uplink transmission without dynamic scheduling. Upli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L5/00H04W52/04
CPCH04L1/1819H04L5/0048H04L5/0055H04L5/0062H04W52/04H04L5/0051H04L5/0044H04W52/146H04W52/325H04W52/50H04W52/48H04L1/08H04L1/189H04W52/06H04W52/36
Inventor 张蕾王磊陈雁吴艺群
Owner HUAWEI TECH CO LTD