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Method and device for transmitting hybrid automatic repeat request feedback information

A technology of hybrid automatic retransmission and feedback information, applied in the field of communication, can solve the problem of low transmission efficiency of the system

Active Publication Date: 2020-07-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem of low system transmission efficiency in the prior art

Method used

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  • Method and device for transmitting hybrid automatic repeat request feedback information
  • Method and device for transmitting hybrid automatic repeat request feedback information
  • Method and device for transmitting hybrid automatic repeat request feedback information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0188] Embodiment 1: Take the following downlink transmission as an example, such as image 3 Shown:

[0189] Suppose the base station sends the first DCI in the monitoring occasion (detection opportunity) of the first DCI in slot n-1. The terminal receives the first PDSCH on the 3rd to 14th symbols in slot n; then a priority Higher downlink traffic arrives, the base station sends the second DCI in the monitoring occasion of the second DCI in time slot n. The terminal receives the second PDSCH transmission on the 11th and 12th symbols in time slot n. Due to the scheduling resource limited, and the second PDSCH requires a very low delay, the second PDSCH needs to start transmission before the end of the first PDSCH, therefore, the second PDSCH and the first PDSCH overlap at least in time domain resources (of course, if Insufficient frequency domain resources, frequency domain resources may also overlap), wherein, the first DCI can be assumed to be used for eMBB service schedul...

Embodiment 2

[0192] Embodiment 2: Assuming that the first PDSCH is not configured to use CBG transmission, and other conditions are the same as in Embodiment 1, then:

[0193] Terminal side: For the first PDSCH, if the terminal determines that it does not use CBG-based transmission, the terminal determines that it does not need to perform HARQ-ACK feedback on the first PDSCH because it receives the overlapping second PDSCH scheduled by the second DCI; Since the transmission of the second DCI is later than the starting position of the first PDSCH, the terminal has already started to receive the first PDSCH, when the terminal judges that the second PDSCH overlaps with the first PDSCH in subsequent symbols according to the indication information in the second DCI , the terminal can determine that there is no need to perform HARQ-ACK feedback on the first PDSCH, then the terminal can stop receiving the first PDSCH as soon as possible, for example, after parsing the second DCI and according to t...

Embodiment 3

[0195] Embodiment 3: Take the following downlink transmission as an example, such as image 3 Shown:

[0196] Assuming that the base station sends the first DCI in the monitoring occasion of the first DCI in slot n-1, the terminal receives the first PDSCH on the 3rd to 14th symbols in slot n; then a higher priority downlink The service arrives, and the base station sends the second DCI in the monitoring occasion of the second DCI in time slot n-1. The terminal receives the second PDSCH transmission on the 5th to 12th symbols in time slot n, because the scheduling resources are limited. , and the second PDSCH requires a very low delay, the second PDSCH needs to start transmission before the end of the first PDSCH, therefore, the second PDSCH and the first PDSCH overlap at least in time domain resources (of course, if the frequency domain Insufficient resources, frequency domain resources may also overlap), such as image 3 As shown; wherein, the first DCI can be assumed to be...

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Abstract

The invention discloses a method and a device for transmitting hybrid automatic repeat request feedback information. The transmission method comprises the following steps: according to code block group (CBG) configuration of first data transmission, determining whether to perform hybrid automatic repeat request (HARQ)-ACK feedback on the first data transmission or not. According to the scheme, thesystem transmission efficiency can be improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a transmission method and equipment for hybrid automatic repeat transmission feedback information. Background technique [0002] With the development and change of mobile communication service requirements, many organizations such as ITU (International Telecommunication Union, International Telecommunication Union) have begun to study new wireless communication systems (ie, 5G NR, 5Generation New RAT) for future mobile communication systems. In 5G, there are services with different priorities, delay requirements or transmission time intervals, such as eMBB (Enhance Mobile Broadband, enhanced mobile broadband) services and URLLC (ultra-reliable low latency communications, reliable, low-latency communications) services, There may also be mMTC (massive Machine Type of Communication, large connection Internet of Things) business, etc. Service flows with extremely high latency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/16H04L1/00H04L5/00
CPCH04L1/1806H04L1/1812H04L1/1825H04L1/1607H04L1/0057H04L5/0055
Inventor 高雪娟
Owner DATANG MOBILE COMM EQUIP CO LTD