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HARQ feedback method and device of SPS PDSCH, terminal and network side equipment

A technology of network-side equipment and target time slots, applied in the field of communication, can solve problems such as downlink symbol collisions, inability to guarantee PUCCH resource downlink symbol collisions, transmission, etc., and achieve the effect of reducing the impact

Active Publication Date: 2021-05-11
DATANG MOBILE COMM EQUIP CO LTD
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AI Technical Summary

Problems solved by technology

The current problem is that NR Rel-16 will define a shorter SPS PDSCH transmission period, so the base station cannot guarantee that the PUCCH resources used by the HARQ-ACK feedback information of SPS PDSCH will not conflict with TDD downlink symbols, and the UE cannot The HARQ-ACK feedback of SPS PDSCH is transmitted in the downlink symbol of TDD, so the HARQ feedback of short-period SPS PDSCH transmission will be discarded too much
[0006] Therefore, for TDD scenarios, since only one K1 value can be indicated in the active DCI of SPS PDSCH, there may be situations where the HARQ-ACK feedback corresponding to SPS PDSCH collides with semi-statically configured downlink symbols, which will lead to short-period SPS PDSCH transmission The HARQ feedback is excessively discarded

Method used

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  • HARQ feedback method and device of SPS PDSCH, terminal and network side equipment
  • HARQ feedback method and device of SPS PDSCH, terminal and network side equipment
  • HARQ feedback method and device of SPS PDSCH, terminal and network side equipment

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Embodiment Construction

[0053] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0054] In NR Rel-15, only the HARQ-ACK feedback information of one SPS PDSCH is allowed to be transmitted in one PUCCH. However, a shorter SPS PDSCH transmission period will be supported in Rel-16, and the new period may be less than or equal to 1 time slot. For the TDD scenario, under a SPS PDSCH configuration, the time slot offset K1 between the SPS PDSCH transmission and the corresponding HARQ-ACK feedback position is indicated by the activated DCI, and only one K1 value can be indicated in the activated DCI, so There may be cases where the HARQ-ACK feedback corresponding to the SPS PDSCH is located in the downlink time slot. When the PUCCH resource used by the HA...

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Abstract

The embodiment of the invention discloses an HARQ (Hybrid Automatic Repeat Request) feedback method and device of an SPS PDSCH (Short Packet Switching Physical Downlink Shared Channel), a terminal and network side equipment. When a PUCCH (Physical Uplink Control Channel) resource used by HARQ-ACK (Hybrid Automatic Repeat Request Acknowledgement) of the SPS PDSCH (Short Packet Switching Physical Downlink Shared Channel) indicated based on activated DCI (Downlink Control Information) is an invalid resource, a first HARQ-ACK corresponding to the SPS PDSCH is delayed to a target time slot. Through judging whether a second HARQ-ACK of a dynamic PDSCH and a time slot offset K value set exist in the target time slot or not,the first HARQ-ACK is fed back in the target time slot or not is determined. The situation that the HARQ-ACK of the SPS PDSCH is discarded is reduced. Meanwhile, an existing feedback codebook determination process is prevented from being modified, and the influence on a protocol and implementation is reduced.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a HARQ feedback method, device, terminal and network side equipment of SPS PDSCH. Background technique [0002] In the 5G (5th Generation, fifth-generation mobile communication technology) NR (New Radio, new air interface) system, it supports semi-persistent scheduling (SPS, Semi-Persistent Scheduling) Physical Downlink Shared Channel (PDSCH, PhysicalDownlink Shared CHannel) transmission and has PDSCH (that is, dynamic PDCSH, or called dynamic PDCSH) transmission of a corresponding physical downlink control channel (PDCCH, PhysicalDownlink Control CHannel). When the SPS PDSCH service is configured, the high-level signaling will configure the RNTI (Radio Network Tempory Identity, wireless network temporary identity) corresponding to the SPS to scramble the PDCCH for the SPS PDSCH, and the high-level signaling will also configure the SPS PDSCH accordingly transmissi...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L1/16H04L5/00
CPCH04L1/1812H04L1/1607H04L5/0053H04L1/16H04L1/18H04L5/00
Inventor 司倩倩高雪娟
Owner DATANG MOBILE COMM EQUIP CO LTD
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