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HARQ-ACK sending method and apparatus

A transmission method and technology of a transmission device are applied in the field of HARQ-ACK transmission methods and devices, and can solve the problems of low transmission probability and feedback efficiency of HARQ-ACK.

Active Publication Date: 2017-11-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a hybrid automatic repeat-acknowledgment HARQ-ACK transmission method and device, so as to at least solve the problem of relatively low transmission probability and feedback efficiency of HARQ-ACK existing in the related art

Method used

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  • HARQ-ACK sending method and apparatus
  • HARQ-ACK sending method and apparatus
  • HARQ-ACK sending method and apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] This embodiment describes the processing procedure at the base station side. The specific process is attached image 3 As shown, the process includes the following steps:

[0089] In step S302, the base station first performs LBT on the unlicensed carrier, and after success, sends related indication information (corresponding to the above-mentioned signaling) for indicating downlink PDSCH data and HARQ-ACK feedback.

[0090] Wherein, the instruction information includes at least one of the following:

[0091] Feedback the carrier indication of HARQ-ACK;

[0092] The frequency domain resource location for HARQ-ACK transmission;

[0093] The subframe position or subframe set where the ACK / NACK feedback is located;

[0094] The HARQ process number or process group number of the PDSCH that needs to feed back ACK / NACK;

[0095] Indicates whether the transmission can be delayed, and if the transmission can be delayed, what is the corresponding delay time or the size of t...

Embodiment 2

[0112] This embodiment describes the processing procedure at the terminal side (that is, at the user equipment side).

[0113] A HARQ-ACK transmission method is used in the terminal side process as attached Figure 4 shown, including the following steps:

[0114] Step S402, the terminal receives and decodes related indication information (corresponding to the above-mentioned signaling) sent by the base station for indicating PDSCH and HARQ-ACK transmission feedback.

[0115] The terminal can obtain the above indication information through blind detection, and the indication information fed back by HARQ-ACK can include at least one of the following:

[0116] Feedback the carrier indication of HARQ-ACK;

[0117] The frequency domain resource location for HARQ-ACK transmission;

[0118] The subframe position where the ACK / NACK feedback is located;

[0119] The HARQ process number or process group number of the PDSCH that needs to feed back ACK / NACK;

[0120] Indicates whethe...

Embodiment 3

[0138] This embodiment describes the method for the terminal to feed back the HARQ-ACK to the received PDSCH:

[0139] If the terminal successfully performs LBT on subframe n, it can feed back the corresponding ACK / NACK.

[0140] The trigger condition for the terminal to perform LBT in this subframe is at least one of the following:

[0141] The terminal receives indication information that the subframe has PUSCH scheduling;

[0142] The terminal receives trigger information that the subframe has CSI reporting;

[0143] The terminal receives the relevant signaling indication information sent by the HARQ-ACK;

[0144] The terminal receives the need to send uplink data in the subframe. The uplink data includes: service data, and the control information data includes HARQ-ACK feedback and CSI reporting.

[0145] as attached Figure 5 As shown: Assuming that the terminal receives the indication information sent by the above base station, and the indication information indic...

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Abstract

The invention provides an HARQ-ACK sending method and apparatus. The method comprises the following steps: determining a to-be-sent HARQ-ACK and a resource position on an unauthorized carrier sending the HARQ-ACK in a predefined manner or a signaling indication manner; executing Listen Before Talk LBT on the unauthorized carrier; and after the LBT is successfully executed, sending the HARQ-ACK on the resource position. By adoption of the HARQ-ACK sending method and apparatus provided by the invention, the influence of a novel frame structure and LBT influence to the original timing relationship sending is solved, the HARQ-ACK sending probability and the feedback flexibility are improved, and the system performance is effectively improved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a HARQ-ACK sending method and device. Background technique [0002] It is an important content in the LTE evolution process that the Long-Term Evolution (LTE for short) system uses an unlicensed carrier to work. This technology will enable the LTE system to use existing unlicensed carriers, greatly enhance the potential spectrum resources of the LTE system, and enable the LTE system to obtain lower spectrum costs. [0003] There are two main modes of LTE using unlicensed, one is carrier aggregation (CarrierAggregation, referred to as CA), unlicensed as an auxiliary component carrier access, and the other is the use of dual connectivity (Dual Connectivity, referred to as DC) access mode. [0004] Due to the introduction of the Listen Before Talk (LBT for short) mechanism on the unlicensed carrier, the terminal (that is, the user equipment UE) feeds back an acknowledgment or no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
CPCH04L1/1822H04L1/1848H04L1/1864H04L1/188H04L1/1896H04L1/1671H04L1/1854H04L5/0055H04W74/0808H04L1/18H04L1/1812
Inventor 李新彩苟伟赵亚军彭佛才杨玲
Owner ZTE CORP
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