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Transmission method, user equipment and base station for hybrid automatic repeat request acknowledgment

A hybrid automatic retransmission and user equipment technology, applied in the field of wireless communication, can solve the problems of waste of resources and inability to be fully scheduled.

Active Publication Date: 2019-05-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention design a HARQ-ACK transmission method for an FDD serving cell or an additional downlink serving cell, which solves the problem of how to design a HARQ-ACK transmission mechanism for an FDD serving cell or an additional downlink serving cell, and avoids the problems in the prior art. Some subframes of the FDD serving cell or the additional downlink serving cell do not have corresponding uplink subframes that feed back HARQ-ACK, so they cannot be fully scheduled, resulting in a technical problem of waste of resources

Method used

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  • Transmission method, user equipment and base station for hybrid automatic repeat request acknowledgment
  • Transmission method, user equipment and base station for hybrid automatic repeat request acknowledgment
  • Transmission method, user equipment and base station for hybrid automatic repeat request acknowledgment

Examples

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example 1

[0229] Step 101' can specifically be: the user equipment according to the downlink subframe n-k i and / or downlink subframe n-k j The value of the TPC field in the detected DCI format corresponds to the downlink subframe n-k i and the downlink subframe n-k j performing HARQ-ACK bundling on the HARQ-ACK response corresponding to the first serving cell, and obtaining the downlink subframe n-k after HARQ-ACK bundling i and the downlink subframe n-k j The HARQ-ACK response corresponding to the first serving cell may specifically be:

[0230] If the user equipment is only in the downlink subframe n-k i The DCI format is detected, and the value of the TPC field in the DCI format is the first value, then the downlink subframe n-k after HARQ-ACK bundling i and the downlink subframe n-k j The HARQ-ACK response corresponding to the first serving cell is the downlink subframe n-k i A HARQ-ACK response corresponding to the first serving cell;

[0231] If the user equipment is only ...

example 2

[0247] Step 101 1 : user equipment for downlink subframe n-k 0 and downlink subframe n-k 1 The HARQ-ACK response corresponding to the first serving cell is bundled by HARQ-ACK, and the downlink subframe n-k after HARQ-ACK bundled is obtained 0 and downlink subframe n-k 1 The HARQ-ACK response corresponding to the first serving cell, where k 0 and k 1 are the first two elements in the set K.

[0248] The step 101 1 , the user equipment for the downlink subframe n-k 0 and downlink subframe n-k 1 The HARQ-ACK response corresponding to the first serving cell performs HARQ-ACK bundling, specifically, the user equipment can perform the HARQ-ACK bundling for the downlink subframe n-k 0 and downlink subframe n-k 1 The HARQ-ACK responses are logically ANDed. due to k 0 and k 1 are the first two elements in the set K, that is, the downlink subframe n-k 0 and downlink subframe n-k 1 They are the first two subframes in the downlink subframe n-k. Since the DAI in the downlink...

example 3

[0252] Step 101 1 : The user equipment determines the HARQ-ACK response HARQ-ACK'(n) corresponding to the first serving cell of the downlink subframe n-k, 0≤n≤M-1. Among them, HARQ-ACK'(n) is the PDSCH transmission received by the user equipment on the downlink subframe n-k, and the DAI value carried in the downlink DCI format of the downlink control channel corresponding to the PDSCH transmission corresponds to the PDSCH transmission corresponding to n+1 HARQ-ACK response; or HARQ-ACK'(n) is the HARQ-ACK response corresponding to the user equipment receiving the downlink control channel indicating the release of the downlink SPS on the downlink subframe n-k, and the downlink control channel indicating the release of the downlink SPS The value of DAI carried in the downlink DCI format of is n+1, otherwise the HARQ-ACK'(n) is DTX.

[0253] This embodiment passes step 101 1, for the HARQ-ACK response corresponding to the downlink subframe in which the base station does not sen...

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Abstract

The present invention provides a transmission method for HARQ confirmation, user equipment and base station. The user equipment receives PDSCH transmission or a downlink control channel indicating downlink SPS release on the first serving cell in the downlink subframe n-k, the duplex mode of the first serving cell is FDD, or all subframes on the first serving cell Both are downlink subframes, or one radio frame on the first serving cell includes 9 downlink subframes and one special subframe; transmit the HARQ-ACK corresponding to the first serving cell of downlink subframe n-k in uplink subframe n Response; n is an integer, k is a positive integer, k belongs to the set K and the set K is determined according to the timing of the first HARQ-ACK. The present invention solves the problem that some downlink subframes do not have uplink subframes corresponding to feedback HARQ-ACK by setting the timing of FDD serving cells or adding downlink serving cells, and improves resource utilization.

Description

【Technical field】 [0001] The present invention relates to the technical field of wireless communication, in particular to a transmission method for HARQ confirmation, and also relates to user equipment and a base station adopting the transmission method for HARQ confirmation. 【Background technique】 [0002] LTE-A (Long Term Evolution-Advanced, Advanced Long Term Evolution) is a further evolution and enhanced system of the 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) LTE system. In the LTE-A system, CA (Carrier Aggregation, Carrier Aggregation) technology, also known as Spectrum Aggregation technology or Bandwidth Extension (Bandwidth Extension), was introduced in order to meet the peak data rate requirements of the International Telecommunication Union for the fourth-generation communication technology. )technology. In carrier aggregation technology, the frequency spectrum of two or more component carriers (Component Carrier) is aggregated t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18
CPCH04L1/1854H04L1/1864H04L1/1861H04L5/1469H04L5/001H04L5/0094H04L5/0055H04L1/1812H04L5/26
Inventor 成艳大卫·马瑞泽
Owner HUAWEI TECH CO LTD