CN114788378A

CN114788378A - Search space group switching method, terminal device and network device

Info

Publication number: CN114788378A
Application number: CN202080086425.2A
Authority: CN
Inventors: 石聪; 吴作敏
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2022-07-22
Also published as: WO2021168628A1

Abstract

The embodiments of the present application relate to a search space group switching method, a terminal device, and a network device. The method includes: when a bandwidth part (BWP) handover occurs in the terminal device, according to at least one of the BWP handover instruction signaling, the first configuration information and the predefined rule, determining that the terminal device blindly detects the physical downlink control on the activated downlink BWP The search space group for the channel (PDCCH). The embodiment of the present application enables the UE to determine the manner in which the UE monitors the search space group when a BWP handover occurs.

Description

PCT国内申请，说明书已公开。PCT domestic application, the description has been published.

Claims

A search space group switching method is applied to terminal equipment and comprises the following steps:

when the terminal equipment is subjected to bandwidth part BWP switching, determining a search space group of a physical downlink control channel PDCCH of the terminal equipment on activated downlink BWP in a blind manner according to at least one item of BWP switching indication signaling, first configuration information and a predefined rule.
The method according to claim 1, wherein the BWP handover indication signaling comprises BWP handover downlink control information, DCI, and/or radio resource control, RRC, handover signaling.
The method according to claim 1 or 2, wherein the BWP handover indication signaling indicates that the terminal device needs to blindly detect a search space group of PDCCH on an active downlink BWP.
The method of claim 1, wherein the first configuration information comprises RRC configuration signaling.
The method of claim 1 or 4, wherein the first configuration information configures a default search space group for downlink BWP;

and the terminal equipment determines a default search space group of activated downlink BWP of the terminal equipment according to the first configuration information or the predefined rule, determines a search space in the default search space group, and performs blind detection on PDCCH according to the determined search space.
The method according to any one of claims 1 to 4, wherein before determining, according to BWP handover indication signaling, that the terminal device blindly detects the search space group of the PDCCH on the activated downlink BWP, the method further includes: and determining a search space of the PDCCH for blind detection of the terminal equipment on the activated downlink BWP according to the second configuration information.
The method of claim 6, wherein the second configuration information comprises RRC configuration signaling.
The method according to claim 6 or 7, wherein the second configuration information configures a default search space for a downlink BWP, the default search space simultaneously belonging to respective search space groups of the downlink BWP;

and the terminal equipment determines the default search space according to the second configuration information, and blindly detects the PDCCH according to the default search space.
The method according to any one of claims 1 to 8, wherein the terminal device determines, according to the BWP handover indication signaling, a search space group of a PDCCH for blind detection on an activated downlink BWP when the BWP handover indication signaling and the first configuration information coexist.
The method according to any of claims 1 to 8, wherein the terminal device determines, in the presence of the BWP handover indication signaling and the predefined rule, a search space group of the PDCCH on the activated downlink BWP for blind detection according to the BWP handover indication signaling.
The method according to any of claims 6 to 8, wherein the terminal device determines, according to the BWP handover indication signaling, a search space group of the PDCCH for blind detection on the activated downlink BWP when the BWP handover indication signaling and the second configuration information coexist.
A search space group switching method is applied to network equipment and comprises the following steps:

and sending a BWP switching indication signaling, wherein the BWP switching indication signaling indicates that the terminal equipment needs to blindly detect the search space group of the PDCCH on the activated downlink BWP.
The method of claim 12, further comprising:

and sending first configuration information, wherein the first configuration information configures a default search space group for the downlink BWP, and the default search space group is a search space group for blind detection of PDCCH on the activated downlink BWP by the terminal equipment.
The method of claim 12 or 13, further comprising:

sending second configuration information, wherein the second configuration information configures a default search space for a downlink BWP, and the default search space simultaneously belongs to each search space group of the downlink BWP; the default search space is a search space in which the terminal device blindly detects the PDCCH on the activated downlink BWP.
A terminal device, comprising:

a determining module, configured to determine, when BWP handover occurs in the terminal device, a search space group of a PDCCH that is blindly detected by the terminal device on an activated downlink BWP according to at least one of BWP handover indication signaling, the first configuration information, and a predefined rule.
The terminal device of claim 15, wherein the BWP handover indication signaling comprises BWP handover DCI and/or RRC handover signaling.
The terminal device according to claim 15 or 16, wherein the BWP handover indication signaling indicates that the terminal device needs to blindly detect a search space group of PDCCH on an active downlink BWP.
The terminal device of claim 17, wherein the first configuration information comprises RRC configuration signaling.
The terminal device according to claim 15 or 18, wherein the first configuration information configures a default search space group for downlink BWP;

the determining module is configured to determine a default search space group of the activated downlink BWP of the terminal device according to the first configuration information or the predefined rule, determine a search space in the default search space group, and perform blind PDCCH detection according to the determined search space.
The terminal device of any one of claims 15 to 19, wherein the determining module is further configured to: and determining a search space of the PDCCH for blind detection of the terminal equipment on the activated downlink BWP according to the second configuration information.
The terminal device of claim 20, wherein the second configuration information comprises RRC configuration signaling.
The terminal device according to claim 20 or 21, wherein the second configuration information configures a default search space for a downlink BWP, the default search space simultaneously belonging to each search space group of the downlink BWP;

and the determining module determines the default searching space according to the second configuration information, and blindly detects the PDCCH according to the default searching space.
The terminal device according to any one of claims 15 to 22, wherein the determining module determines, according to the BWP handover indication signaling, that the terminal device blindly detects a search space group of the PDCCH on an activated downlink BWP when the BWP handover indication signaling and the first configuration information coexist.
The terminal device according to any of claims 15 to 22, wherein said determining module determines that the terminal device blindly detects a search space group of PDCCH on an active downlink BWP according to the BWP handover indication signaling in case that the BWP handover indication signaling and the predefined rule are both present.
The terminal device according to any of claims 20 to 22, wherein the determining module determines, according to the BWP handover indication signaling, that the terminal device blindly detects a search space group of the PDCCH on an activated downlink BWP when the BWP handover indication signaling and the second configuration information coexist.
A network device, comprising:

and the instruction sending module is used for sending a BWP switching indication signaling, and the BWP switching indication signaling indicates that the terminal equipment needs to blindly detect the search space group of the PDCCH on the activated downlink BWP.
The network device of claim 26, further comprising:

a first configuration information sending module, configured to send first configuration information, where the first configuration information configures a default search space group for a downlink BWP, and the default search space group is a search space group for a terminal device to blind-detect a PDCCH on an activated downlink BWP.
The network device of claim 26 or 27, further comprising:

a second configuration information sending module, configured to send second configuration information, where the second configuration information configures a default search space for a downlink BWP, and the default search space belongs to each search space group of the downlink BWP at the same time; the default search space is a search space in which the terminal device blindly detects the PDCCH on the activated downlink BWP.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 11.
A communication device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 12 to 14.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 11.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 12 to 14.
A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 11.
A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 12 to 14.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 1 to 11.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 12 to 14.
A computer program for causing a computer to perform the method of any one of claims 1 to 11.
A computer program for causing a computer to perform the method of any one of claims 12 to 14.