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Base station, user equipment and uplink data transmission method

A data transmission method and user equipment technology, applied in the field of wireless communication, can solve problems such as poor reliability and resource conflict

Active Publication Date: 2017-05-31
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the scheduling-free transmission method in the prior art has the problem of poor reliability due to resource conflicts

Method used

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  • Base station, user equipment and uplink data transmission method
  • Base station, user equipment and uplink data transmission method
  • Base station, user equipment and uplink data transmission method

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Embodiment Construction

[0046] In the existing technology, the fifth-generation communication technology (5G) communication has three major business scenarios—enhanced mobile broadband (eMBB), massive Internet of Things (massive MTC, mMTC), low-latency and high-reliability communication (Ultra-Reliable and Low Latency Communication) , URLLC), all of which have small-packet data transmission business requirements. Small-packet data transmission has the characteristics of small data packets and strong business bursts, so the transmission mechanism based on grant-free has attracted widespread attention in the industry.

[0047] In the scheduling-free uplink transmission method, when the user equipment in the idle state has data to send, it does not need to send a scheduling request to the base station and wait for the base station's uplink scheduling authorization to allocate uplink resources for it. resource transfer. According to the allocation method of scheduling-free resources, the scheduling-free...

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Abstract

The invention discloses a base station, user equipment and an uplink data transmission method. The method comprises the steps of carrying out blind detection on a preset grant-free resource pool; when uplink data retransmitted by the user equipment is detected, on the basis of a reference signal employed by the uplink data, determining a cause for the fact that previously transmitted uplink data is decoded unsuccessfully; selecting a corresponding independent decoding or combined decoding mode to decode the currently retransmitted uplink data according to the cause for the fact that previously transmitted uplink data is decoded unsuccessfully; and when the currently retransmitted uplink data is decoded unsuccessfully, on the basis of the cause for the fact that previously transmitted uplink data is decoded unsuccessfully, generating feedback information corresponding to current retransmission and sending the feedback information to the user equipment, thereby enabling the user equipment to select a corresponding grant-free multi-access resource from the grant-free resource pool to retransmit the uplink data under the instruction of the feedback information. According to the scheme, the transmission reliability of the uplink data is improved, the resources are saved, and the system efficiency is improved.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a base station, user equipment and an uplink data transmission method. Background technique [0002] The fifth generation of communication technology (5G) is the main direction of the development of the new generation of mobile communication technology and an important part of the future new generation of information infrastructure. The three major communication service scenarios of 5G - enhanced mobile broadband (eMBB), massive MTC (mMTC), and ultra-reliable and low latency communication (Ultra-Reliable and Low Latency Communication, URLLC), all have small packet data transmission services need. Small-packet data transmission has the characteristics of small data packets and strong business bursts, so the transmission mechanism based on grant-free has attracted widespread attention in the industry. [0003] In the scheduling-free uplink transmission method, when the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L1/18H04W74/00H04W74/08
CPCH04L1/1678H04L1/1812H04L1/1845H04W74/085H04W74/002
Inventor 曲鑫
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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