Method for processing PDCCH monitoring capability, terminal, and network-side device
This application discloses a method for processing a PDCCH monitoring capability, a terminal, and a network-side device, belonging to the field of communication technologies. The method includes: determining a physical downlink control channel PDCCH monitoring capability, where the PDCCH monitoring capability represents a restriction condition that needs to be met by a slot monitorable by the terminal (e.g., UE); and sending the PDCCH monitoring capability, where the PDCCH monitoring capability includes any one or a combination of the following: a monitoring occasion is only on a predetermined slot of a radio frame, a radio subframe, or a slot group; or a monitoring occasion is on any slot of a radio frame, a radio subframe, or a slot group.
1 . A method for processing a PDCCH monitoring capability performed by a terminal, comprising:
determining a physical downlink control channel (PDCCH) monitoring capability, wherein the PDCCH monitoring capability represents a restriction condition that needs to be met by a slot monitorable by the terminal; and
sending the PDCCH monitoring capability, wherein
the PDCCH monitoring capability comprises any one or a combination of the following:
a monitoring occasion is only on a predetermined slot of a slot group; or
a monitoring occasion is on any slot of a slot group; wherein
the slot group is determined in the following manner;
determining a quantity N of slots comprised in the slot group; and
determining a position of the slot group based on the determined quantity N of slots; wherein
the quantity N of slots is obtained through a capability parameter reported by the terminal, wherein the capability parameter comprises the quantity N of slots.
2 . The method for processing a PDCCH monitoring capability according to claim 1 , wherein the predetermined slot comprises any one of the following:
a top preset quantity of slots in the slot group;
a last preset quantity of slots of the slot group; or
slots spaced by a preset quantity of slots in the slot group.
3 . The method for processing a PDCCH monitoring capability according to claim 1 , wherein
in a first preset case, the monitoring occasion is only on the predetermined slot of the slot group; and
in a second preset case, the monitoring occasion is on any slot of the slot group, wherein
the first preset case is a condition for all search space or a condition for Type 1 with dedicated radio resource control (RRC) configuration, Type 3, and user-specific search space (USS); and
the second preset case is a condition for all search space or a condition for Type 0, Type 0A, Type 2 common search space (CSS), and Type 1 with non-dedicated RRC configuration.
4 . The method for processing a PDCCH monitoring capability according to claim 3 , wherein the PDCCH monitoring capability further comprises any one of the following:
in the first preset case, the monitoring occasion is on any slot of the slot group, or
in the first preset case, the monitoring occasion is on any slot of the slot group, and any continuous PDCCHs meet a preset gap.
5 . The method for processing a PDCCH monitoring capability according to claim 1 , wherein the slot group is determined in the following manner:
determining a set {Ni} of a quantity of slots comprised in the slot group; and
determining a position of the slot group based on the determined set {Ni} of the quantity of slots; wherein
the quantity N of the plurality of slots constitutes the set {Ni} of the quantity of slots.
6 . The method for processing a PDCCH monitoring capability according to claim 5 , wherein the set {Ni} of the quantity of slots is obtained through one of the following manners:
obtaining through configuration of a network;
obtaining through a quantity of a plurality of physical downlink shared channels (PDSCHs) or a quantity of slots that are schedulable by a time domain scheduling parameter in downlink control information (DCI);
obtaining through a capability parameter reported by the terminal, wherein the capability parameter comprises the set {Ni} of the quantity of slots, or comprises a quantity of a plurality of PDSCHs or a quantity of slots that are schedulable by a time domain scheduling parameter in DCI; or
obtaining through the set {Ni} of the quantity of slots predefined in a protocol.
7 . The method for processing a PDCCH monitoring capability according to claim 6 , wherein the capability parameter is one or more of the following parameters:
the quantity of slots comprised in the slot group;
a gap value between slots or slot groups; or
a blind detection (BD) budget value or a control channel element (CCE) budget value.
8 . The method for processing a PDCCH monitoring capability according to claim 5 , wherein the position of the slot group is determined by one of the following manners:
determining by any continuous N slots, wherein
on the radio frame, the radio subframe, or slot bundling, every N slots starting from a first slot are the slot group, a last group uses a last slot of the radio frame, the radio subframe, or the slot bundling as an end slot, and a pattern of the slot group is repeated in each radio frame, radio subframe, or slot bundling;
using a slot configured by a network or reported by the terminal as a starting slot or a reference slot, and determining the position of the slot group according to the starting slot or the reference slot, and the quantity N of slots; or
determining a pattern of the slot group according to a monitoring occasion configured by search space (SS).
9 . The method for processing a PDCCH monitoring capability according to claim 8 , wherein the determining a pattern of the slot group according to a monitoring occasion configured by search space (SS) comprises:
determining that the pattern of the slot group is repeated in each radio frame, radio subframe, or slot bundling, wherein
a starting point of a first slot group is a first slot with a monitoring occasion in the radio frame, the radio subframe, or the slot bundling, and N slots starting from the starting point of the first slot group are the first slot group; a starting point of a next slot group is the first slot with the monitoring occasion not in any previous slot group, and the N slots starting from the starting point of the next slot group are a slot group; and the foregoing operations are performed sequentially, wherein a last slot group ends at an end point of the radio frame, the radio subframe, or the slot bundling.
10 . The method for processing a PDCCH monitoring capability according to claim 8 , wherein the determining a pattern of the slot group according to a monitoring occasion configured by search space (SS) comprises:
determining that the pattern of the slot group is different in each radio frame, radio subframe, or slot bundling, wherein
for each radio frame, radio subframe, or slot bundling, a starting point of a first slot group is a first slot with a monitoring occasion in the radio frame, the radio subframe, or the slot bundling, and N slots starting from the starting point of the first slot group are the first slot group; a starting point of a next slot group is the first slot with the monitoring occasion not in any previous slot group, and the N slots starting from the starting point of the next slot group are a slot group; and the foregoing operations are performed sequentially, wherein a last slot group ends at the radio frame, the radio subframe, or the slot bundling.
11 . The method for processing a PDCCH monitoring capability according to claim 8 , wherein the determining a pattern of the slot group according to a monitoring occasion configured by search space (SS) comprises:
using the slot configured by the network or reported by the terminal as the starting slot or the reference slot, and determining the pattern of the slot group from the starting slot, or determining the pattern of the slot group from the starting slot spaced from the reference slot by a preset quantity of slots, wherein
a starting point of a first slot group is a first slot with a monitoring occasion after the starting slot or a starting point slot, and N slots starting from the starting point of the first slot group are the first slot group; a starting point of a next slot group is the first slot with the monitoring occasion not in any previous slot group, and the N slots starting from the starting point of the next slot group are a slot group; and the foregoing operations are performed sequentially, to determine the pattern of the slot group.
12 . The method for processing a PDCCH monitoring capability according to claim 1 , wherein the slot group meets one or more of the following conditions:
a distance between slot groups is greater than or equal to a first predetermined value;
a quantity of search space SS sets configured in each slot group is less than or equal to a second predetermined value, wherein the condition is limited before search space SS dropping;
a quantity of BDs or CCEs in each slot group is less than or equal to a third predetermined value;
a quantity of monitoring occasions for each slot group is less than or equal to a fourth predetermined value, wherein the condition is before SS dropping; or
a quantity of monitoring occasions for each slot in each slot group is less than or equal to a fifth predetermined value, wherein the condition is before SS dropping.
13 . The method for processing a PDCCH monitoring capability according to claim 1 , wherein the PDCCH monitoring capability further comprises any one or a combination of the following:
for a scheduled secondary cell (Scell), corresponding to each bandwidth part BWP, there are at most a first preset quantity of search space (SS) sets on a slot monitorable by each slot group, and the restriction is before search space SS dropping is performed;
for a frequency division duplex (FDD) system, and for each scheduled carrier component (CC), only a second preset quantity of pieces of downlink control information (DCI) for scheduling downlink (DL) unicast transmission and a third preset quantity of pieces of DCI for scheduling uplink (UL) unicast transmission are processed on a minotorable slot of each slot group; or
for a time division duplex (TDD) system, and for each scheduled CC, only a fourth preset quantity of pieces of downlink control information DCI for scheduling downlink (DL) unicast transmission and a fifth preset quantity of pieces of DCI for scheduling uplink (UL) unicast transmission are processed on a minotorable slot of each slot group.
14 . The method for processing a PDCCH monitoring capability according to claim 1 , wherein the PDCCH monitoring capability further comprises one or more of the following:
time at which the terminal demodulates specific DCI;
a minimum K0 or K2 restriction; or
earliest time at which the terminal performs physical downlink shared channel (PDSCH) buffer.
15 . A method for processing for a PDCCH monitoring capability performed by a network-side device, comprising:
receiving the PDCCH monitoring capability; and
sending a PDCCH based on the PDCCH monitoring capability, wherein
the PDCCH monitoring capability comprises any one or a combination of the following:
a monitoring occasion is only on a predetermined slot of a slot group; or
a monitoring occasion is on any slot of a slot group; wherein
the slot group is determined in the following manner:
determining a quantity N of slots comprised in the slot group; and
determining a position of the slot group based on the determined quantity N of slots; wherein
the quantity N of slots is obtained through a capability parameter reported by the terminal, wherein the capability parameter comprises the quantity N of slots.
16 . The method for processing a PDCCH monitoring capability according to claim 15 , wherein the predetermined slot comprises any one of the following:
a top preset quantity of slots in the slot group;
a last preset quantity of slots of the slot group; or
slots spaced by a preset quantity of slots in the slot group.
17 . A network-side device, comprising:
a processor; and
a memory storing a program or an instruction,
wherein the program or instruction, when executed by the processor, causes the network-side device to perform the method for processing a PDCCH monitoring capability according to claim 15 .
18 . A terminal, comprising:
a processor; and
a memory storing a program or an instruction,
wherein the program or instruction, when executed by the processor, causes the terminal to:
determine a physical downlink control channel (PDCCH) monitoring capability, wherein the PDCCH monitoring capability represents a restriction condition that needs to be met by a slot monitorable by the terminal; and
send the PDCCH monitoring capability, wherein
the PDCCH monitoring capability comprises any one or a combination of the following:
a monitoring occasion is only on a predetermined slot of a slot group; or
a monitoring occasion is on any slot of a slot group; wherein
the slot group is determined in the following manner:
determining a quantity N of slots comprised in the slot group; and
determining a position of the slot group based on the determined quantity N of slots; wherein
the quantity N of slots is obtained through a capability parameter reported by the terminal, wherein the capability parameter comprises the quantity N of slots.
19 . The terminal according to claim 18 , wherein the predetermined slot comprises any one of the following:
a top preset quantity of slots in the slot group;
a last preset quantity of slots of the slot group; or
slots spaced by a preset quantity of slots in the slot group.
20 . The terminal according to claim 18 , wherein
in a first preset case, the monitoring occasion is only on the predetermined slot of the slot group; and
in a second preset case, the monitoring occasion is on any slot of the slot group, wherein
the first preset case is a condition for all search space or a condition for Type 1 with dedicated radio resource control (RRC) configuration, Type 3, and user-specific search space (USS); and
the second preset case is a condition for all search space or a condition for Type 0, Type 0A, Type 2 common search space (CSS), and Type 1 with non-dedicated RRC configuration.