PDSCH Transmission Method and Apparatus

Patent metadata

Field	Value
Publication number	US-2023084429-A1
Application number	US-202217986279-A
Country	US
Kind code	A1
Filing date	Nov 14, 2022
Priority date	May 15, 2020
Publication date	Mar 16, 2023
Grant date	—

Abstract

This application provides a PDSCH transmission method and apparatus, and relates to the field of communication technologies, to reduce complexity of processing a PDSCH by a terminal device. The method includes: The terminal device receives first DCI and second DCI. First indication information included in one piece of DCI that is in the first DCI and the second DCI and that has the first indication information indicates whether one or more time-frequency resource groups in a first PDSCH and a second PDSCH are available. In this way, there is only one type of interference strength between the first PDSCH and the second PDSCH, and the terminal device may process the first PDSCH and the second PDSCH by using a descrambling manner corresponding to the interference strength. In this case, the terminal may receive both of the first PDSCH and the second PDSCH.

First claim

What is claimed is:

1 . A physical downlink shared channel PDSCH transmission method, comprising:
receiving, by a terminal device, first downlink control information DCI and second DCI, wherein the first DCI is associated with a first control resource set CORESET, the second DCI is associated with a second CORESET, the first DCI is used for scheduling a first PDSCH, the second DCI is used for scheduling a second PDSCH, and the first PDSCH and the second PDSCH have completely overlapping time-frequency resources, wherein the first DCI and the second DCI each have first indication information, and the first indication information in the first DCI is the same as that in the second DCI; the first indication information comprised in the first DCI and the second DCI indicates whether one or more time-frequency resource groups in the first PDSCH and the second PDSCH are available; the time-frequency resource group comprises one or more resource sets, and the time-frequency resource group is configured by using radio resource control RRC signaling; and configuration information of the first CORESET comprises first identification information, configuration information of the second CORESET comprises second identification information, and the first identification information and the second identification information have different values.

2 . The PDSCH transmission method according to claim 1 , wherein if the first DCI has the first indication information, but the second DCI does not have the first indication information, one piece of DCI having the first indication information is the first DCI; or
if the first DCI does not have the first indication information, but the second DCI has the first indication information, one piece of DCI having the first indication information is the second DCI.

3 . The PDSCH transmission method according to claim 1 , wherein if the first DCI and the second DCI each have the first indication information, one piece of DCI having the first indication information is DCI that is in the first DCI and the second DCI and that meets a preset condition.

4 . The PDSCH transmission method according to claim 3 , wherein if the first indication information in the first DCI is the same as that in the second DCI, the DCI that meets the preset condition is either the first DCI or the second DCI.

5 . A physical downlink shared channel PDSCH transmission method, comprising:
sending, by a network device, first downlink control information DCI on a first control resource set, and sending second DCI on a second CORESET, wherein the first DCI is used for scheduling a first PDSCH, the second DCI is used for scheduling a second PDSCH, and the first PDSCH and the second PDSCH have completely overlapping time-frequency resources, wherein the first DCI and the second DCI each have first indication information, and the first indication information in the first DCI is the same as that in the second DCI; the first indication information comprised in the first DCI and the second DCI indicates whether one or more time-frequency resource groups in the first PDSCH and the second PDSCH are available; the time-frequency resource group comprises one or more resource sets, and the time-frequency resource group is configured by using RRC signaling; and configuration information of the first CORESET comprises first identification information, configuration information of the second CORESET comprises second identification information, and the first identification information and the second identification information have different values.

6 . The PDSCH transmission method according to claim 5 , wherein one piece of DCI in the first DCI and the second DCI has the first indication information, and the DCI is DCI that meets a preset condition.

7 . The PDSCH transmission method according to claim 5 , wherein the first DCI and the second DCI have the same first indication information; and
one piece of DCI having the first indication information is either the first DCI or the second DCI.

8 . The PDSCH transmission method according to claim 5 , wherein the first DCI and the second DCI have different first indication information; and
one piece of DCI having the first indication information is DCI that is in the first DCI and the second DCI and that meets a preset condition.

9 . A terminal device, comprising a receiver and a processor, wherein
the processor is configured to indicate the receiver to receive first downlink control information DCI and second DCI, wherein the first DCI is associated with a first control resource set CORESET, the second DCI is associated with a second CORESET, the first DCI is used for scheduling a first PDSCH, the second DCI is used for scheduling a second PDSCH, and the first PDSCH and the second PDSCH have completely overlapping time-frequency resources, wherein the first DCI and the second DCI each have first indication information, and the first indication information in the first DCI is the same as that in the second DCI; the first indication information comprised in the first DCI and the second DCI indicates whether one or more time-frequency resource groups in the first PDSCH and the second PDSCH are available; the time-frequency resource group comprises one or more resource sets, and the time-frequency resource group is configured by using radio resource control RRC signaling; and configuration information of the first CORESET comprises first identification information, configuration information of the second CORESET comprises second identification information, and the first identification information and the second identification information have different values.

10 . The terminal device according to claim 9 , wherein if the first DCI has the first indication information, but the second DCI does not have the first indication information, one piece of DCI having the first indication information is the first DCI; or
if the first DCI does not have the first indication information, but the second DCI has the first indication information, one piece of DCI having the first indication information is the second DCI.

11 . The terminal device according to claim 9 , wherein if the first DCI and the second DCI each have the first indication information, one piece of DCI having the first indication information is DCI that is in the first DCI and the second DCI and that meets a preset condition.

12 . The terminal device according to claim ii, wherein if the first indication information in the first DCI is the same as that in the second DCI, the DCI that meets the preset condition is either the first DCI or the second DCI.

13 . A network device, comprising a transmitter and a processor, wherein
the processor is configured to indicate the transmitter to send first downlink control information DCI on a first control resource set, and send second DCI on a second CORESET, wherein the first DCI is used for scheduling a first PDSCH, the second DCI is used for scheduling a second PDSCH, and the first PDSCH and the second PDSCH have completely overlapping time-frequency resources, wherein the first DCI and the second DCI each have first indication information, and the first indication information in the first DCI is the same as that in the second DCI; the first indication information comprised in the first DCI and the second DCI indicates whether one or more time-frequency resource groups in the first PDSCH and the second PDSCH are available; the time-frequency resource group comprises one or more resource sets, and the time-frequency resource group is configured by using RRC signaling; and configuration information of the first CORESET comprises f

Assignees

• Huawei Tech Co Ltd

Inventors

• Zhang Yongping
• Feng Shulan
• Liu Xiaoqing
• Li Tie

Classifications

• H04W72/232 Primary

  the control data signalling from the physical layer, e.g. DCI signalling · CPC title

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title