Control channel monitoring method and device, terminal, base station and storage medium

Patent metadata

Field	Value
Publication number	US-12477553-B2
Application number	US-202117913817-A
Country	US
Kind code	B2
Filing date	Mar 18, 2021
Priority date	Apr 2, 2020
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

Provided are a control channel monitoring method and device, a terminal, a base station and a storage medium. The method includes: determining a monitoring slot group for control channel monitoring, and the monitoring slot group is used for characterizing a slot group capable of sharing control channel monitoring capability under a specified slot condition; determining a search space of the monitoring slot group; and monitoring control channels indicated by the search space. Therefore, in the embodiments of the present disclosure, control channels are monitored by taking a monitoring slot group as a unit, and a problem that a terminal is unable to complete the process of receiving and configuring control signaling in a corresponding time slot due to the increase in an SCS is avoided, and the complexity of the terminal to monitor control channels is also reduced.

First claim

What is claimed is:

1 . A method for monitoring control channels, performed by a terminal, comprising:
determining a monitoring slot group for control channel monitoring, wherein the monitoring slot group is used for characterizing a slot group capable of sharing, under a specified slot condition, control channel monitoring capability, and the control channel monitoring capability shared by the slot group comprises a maximum number of control channel candidates corresponding to the slot group or a maximum number of control channel elements (CCEs) corresponding to the slot group; determining a search space of the monitoring slot group; and monitoring control channels indicated by the search space.

2 . The method of claim 1 , wherein the specified slot condition comprises that a sub-carrier spacing (SCS) of each control channel is greater than 120 KHz; and the sharing control channel monitoring capability is used for characterizing a control channel monitoring capability corresponding to more than one slots.

3 . The method of claim 1 , wherein the determining a monitoring slot group for control channel monitoring comprises:
determining first configuration information for the monitoring slot group according to an interface protocol between a first node and a second node, and determining the monitoring slot group according to the first configuration information; or receiving the first configuration information indicated by a base station, and determining the monitoring slot group according to the first configuration information.

4 . The method of claim 3 , wherein the first configuration information comprises at least one of:
a number of slots included in the monitoring slot group; a maximum number of control channel candidates in the monitoring slot group; or a maximum number of control channel elements (CCEs) in the monitoring slot group.

5 . The method of claim 4 , wherein the first configuration information further satisfies at least one of:
the number of slots is associated with the SCS; the maximum number of control channel candidates is associated with the SCS; or the maximum number of CCEs is associated with the SCS; wherein the number of slots is 4 in case that the SCS is 480 KHz; and the number of slots is 8 in case that the SCS is 960 KHz; the maximum number of candidate control channels increases as SCS increases, or the maximum candidate control channel number remains unchanged as SCS increases; the maximum number of CCEs increases as SCS increases, or the maximum number of CCEs remains unchanged as SCS increases.

6 . The method of claim 4 , wherein the number of slots is determined based on a ratio of the SCS to a preset reference SCS.

7 . The method of claim 4 , wherein the monitoring control channels indicated by the search space comprises:
monitoring control channels indicated by the search space when a number of control channels to be monitored is not greater than the maximum number of control channel candidates.

8 . The method of claim 1 , wherein the determining the search space of the monitoring slot group comprises:
determining second configuration information for the search space according to an interface protocol between a first node and a second node, and determining the search space according to the second configuration information; or receiving the second configuration information indicated by a base station, and determining the search space according to the second configuration information.

9 . The method of claim 8 , wherein the second configuration information comprises:
first indication information, used for indicating a monitoring slot group with a control channel monitoring occasion; second indication information, used for indicating that the control channel monitoring occasion is at a designated position in the monitoring slot group, wherein the designated position comprises one designated slot or a plurality of designated slots in the monitoring slot group, and a symbol of value 1 in a string monitoringslotWithinSlotgroupBITSTRING indicates the designated slot; and an offset of start position of the monitoring slot group, wherein the offset of start position is used for indicating respective slots included in the monitoring slot group.

10 . The method of claim 9 , wherein the monitoring control channels indicated by the search space comprises:
monitoring the control channels at one designated slot or the plurality of designated slots in the monitoring slot group.

11 . The method of claim 1 , further comprising:
receiving or transmitting a shared data channel according to one or more monitored control information after the control channel monitoring within all search spaces in the monitoring slot group has been completed.

12 . A method for monitoring control channels, performed by a base station, comprising:
determining a monitoring slot group for control channel monitoring, wherein the monitoring slot group is used for characterizing a slot group capable of sharing, under a specified slot condition, control channel monitoring capability, and the control channel monitoring capability shared by the slot group comprises a maximum number of control channel candidates corresponding to the slot group or a maximum number of control channel elements (CCEs) corresponding to the slot group; determining a search space of the monitoring slot group; and transmitting control channels indicated by the search space for indicating a terminal to monitor the control channels indicated by the search space.

13 . The method of claim 12 , wherein the specified slot condition comprises that a sub-carrier spacing (SCS) of each control channel is greater than 120 KHz; and
the sharing control channel monitoring capability is used for characterizing a control channel monitoring capability corresponding to more than one slots.

14 . The method of claim 12 , wherein the determining a monitoring slot group for control channel monitoring comprises:
determining first configuration information for the monitoring slot group according to an interface protocol between a first node and a second node, and determining the monitoring slot group according to the first configuration information.

15 . The method of claim 14 , wherein the first configuration information comprises at least one of:
a number of slots included in the monitoring slot group; a maximum number of control channel candidates in the monitoring slot group; or a maximum number of control channel elements (CCEs) in the monitoring slot group; the number of slots is 4 in case that the SCS is 480 KHz; and the number of slots is 8 in case that the SCS is 960 KHz; the maximum number of candidate control channels increases as SCS increases, or the maximum candidate control channel number remains unchanged as SCS increases; the maximum number of CCEs increases as SCS increases, or the maximum number of CCEs remains unchanged as SCS increases.

16 . The method of claim 15 , wherein the number of slots is determined based on a ratio of the SCS to a preset reference SCS.

17 . The method of claim 12 , wherein the determining the search space of the monitoring slot group comprises:
determining second configuration information for the search space according to an interface protocol between a first node and a second node; and determining the search space according to the second configuration information; wherein the second configuration information comprises: first indication information, used for indicating a monitoring slot group with a contr

Assignees

• Datang mobile communications equipment co ltd

Inventors

• Wang Junwei
• Zhao Rui

Classifications

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04L5/0053 Primary

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

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W24/02 Primary

  Arrangements for optimising operational condition · CPC title