Network-indication-based channel monitoring method and apparatus, and user equipment
A channel monitoring method and apparatus, and a user equipment are disclosed. The method includes: receiving, by the UE, first information sent by a network device, where the first information is used for indicating a monitoring behavior of the UE on a downlink control channel, and the first information includes at least one of the following: time information or frequency domain information; and monitoring or stopping monitoring, by the UE, a target downlink control channel according to the first information.
1 . A channel monitoring method, comprising:
receiving, by a user equipment UE, first information sent by a network device, wherein the first information is used for indicating a monitoring behavior of the UE on a downlink control channel, and the first information comprises at least one of the following: time information or frequency domain information; and
monitoring or stopping monitoring, by the UE, a target downlink control channel according to the first information;
wherein the monitoring or stopping monitoring, by the UE, a target downlink control channel according to the first information comprises:
monitoring or stopping monitoring, by the UE, the target downlink control channel according to the first information in a case that the UE initiates the competition-based random access process and receives a random access message scheduled by a downlink control channel scrambled by using a specific radio network temporary identifier RNTI.
2 . The method according to claim 1 , wherein the time information comprises at least one of the following: a start time or an application time, wherein the start time is a time of starting to monitor or starting to stop monitoring the downlink control channel, and the application time is a duration of monitoring or stopping monitoring the downlink control channel; or,
the frequency domain information comprises at least one of the following: a preset quantity of cells/component carriers, a bandwidth part BWP, a frequency range, a physical resource block PRB, or a cell group corresponding to a cell.
3 . The method according to claim 2 , wherein in a case that the first information is downlink control information DCI, the start time is any one of the following: a next time unit, a first time, or a second time;
wherein the next time unit is a next time unit of a time unit in which the DCI is received, the first time is a time determined according to a symbol in which the DCI is received, and the second time is specified in a protocol.
4 . The method according to claim 3 , wherein in a case that the DCI is a wake up-signal WUS, the start time is a next discontinuous reception DRX duration indicated by the WUS;
in a case that the DCI is used for indicating BWP switching, the start time is a time after the BWP switching;
in a case that the DCI schedules a downlink data channel, the start time is a time determined according to a slot in which the downlink data channel is located and a third slot quantity, and the third slot quantity is a quantity of slots in which uplink control channel transmission feeding back the acknowledgement information to the downlink data channel is located; and
in a case that the DCI schedules an uplink data channel, the start time is a time determined according to a slot in which the DCI is located and a quantity of slots in which the uplink data channel is scheduled.
5 . The method according to claim 2 , wherein the application time is any one of the following: a first duration, a second duration, an end time, a third duration, a target slot, or a monitoring occasion, wherein
the first duration is a duration of N continuous or discontinuous short DRX cycles after a time unit in which the first information is received, the second duration is a duration of M continuous or discontinuous long DRX cycles after the time unit in which the first information is received, the end time is a time of finishing monitoring or finishing stopping monitoring the downlink control channel, the third duration is a time length of monitoring or stopping monitoring the downlink control channel, the target slot is a slot of monitoring or stopping monitoring the downlink control channel, the monitoring occasion is an occasion of monitoring or stopping monitoring the downlink control channel, and N and M are both positive integers.
6 . The method according to claim 1 , wherein the monitoring or stopping monitoring, by the UE, a target downlink control channel according to the first information comprises:
monitoring or stopping monitoring, by the UE, the target downlink control channel according to the first information in a case that a preset condition is met, wherein
the preset condition comprises at least one of the following: a cell in which the UE is located is a secondary cell, the cell in which the UE is located is a secondary cell scheduling a primary cell in a cross-carrier manner, a frequency corresponding to the cell in which the UE is located is within a target frequency range, the UE is in a target state, the UE monitors the downlink control channel according to other monitoring-related information, or a BWP on a component carrier corresponding to the downlink control channel is in a non-dormant state.
7 . The method according to claim 6 , wherein the other monitoring-related information comprises at least one of the following: DRX cycle-related information, a WUS, cross-slot scheduling indication information, or secondary cell dormancy indication information.
8 . The method according to claim 1 , wherein the target downlink control channel comprises at least one of the following: all downlink control channels in a UE specific search space USS, all downlink control channels in a first preset type of common search space CSS, or a specific downlink control channel; wherein the first preset type of CSS is a type-3 CSS.
9 . The method according to claim 8 , wherein the specific downlink control channel is configured by a higher layer or indicated by the first information.
10 . The method according to claim 9 , wherein the first information indicates second information, and the specific downlink control channel is determined by the second information, wherein
the second information comprises at least one of the following: a search space set, a DCI format, an aggregation level, a control resource set, a radio network temporary identifier RNTI, or a resource block set.
11 . The method according to claim 8 , wherein the target downlink control channel comprises at least all the downlink control channels in a first preset type of CSS; and
after the receiving, by a UE, first information sent by a network device, the method further comprises:
monitoring, by the UE, a second downlink control channel, wherein
the second downlink control channel comprises at least one of the following: all downlink control channels in another type of CSS, a downlink control channel scrambled by an RNTI in the another type of CSS, a downlink control channel other than a downlink control channel scrambled by a specific RNTI in the another type of CSS, or the downlink control channel corresponding to a specific DCI format in the first preset type of CSS; and the another type of CSS is a CSS other than the first preset type of CSS.
12 . The method according to claim 1 , wherein after the receiving, by a UE, first information sent by a network device, the method further comprises:
transmitting, by the UE, third information in a case that a cell in which the UE is located is a target cell, wherein the third information comprises at least one of the following: first hybrid automatic repeat request-acknowledgment HARQ-ACK information, second HARQ-ACK information, first channel state information CSI, second CSI, a first scheduling request SR, or a second SR;
the target cell is any one of the following: a primary cell, a primary secondary cell, or a secondary cell corresponding to an uplink control channel; and physical layer priorities of the first HARQ-ACK information and the second HARQ-ACK information are different, physical layer priorities of the first CSI and the second CSI are different, and physical layer priorities of the first SR and the second SR are different.
13 . The method according to claim 1 , wherein after the receiving, by a UE, first information sent by a network device, the method further comprises:
transmitting, by the UE, in a case that the UE is configured with fourth information, the fourth information, wherein
the fourth information comprises at least one of the following: a first SR, or a second SR; and physical layer priorities of the first SR and the second SR are different.
14 . The method according to claim 13 , wherein after the transmitting, by the UE, the fourth information, the method further comprises:
starting, by the UE, a target timer, and monitoring a retransmitted first downlink control channel within a running duration of the target timer, wherein
the target timer is a DRX retransmission timer or a DRX-HARQ round-trip time timer; and the first downlink control channel is any one of the following: a downlink control channel in any type of search space, a downlink control channel in a second preset type of CSS, or another downlink control channel other than the target downlink control channel.
15 . The method according to claim 1 , wherein the monitoring or stopping monitoring, by the UE, a target downlink control channel according to the first information further comprises:
monitoring or stopping monitoring, by the UE, the target downlink control channel according to the first information in a case that the UE does not initiate a competition-based random access process.
16 . The method according to claim 1 , further comprising:
ignoring, by the UE, the first information in a case that the UE initiates the competition-based random access process and does not receive the random access message scheduled by the downlink control channel scrambled by using the specific RNTI.
17 . A user equipment UE, comprising a processor, a memory, and a program or instruction stored on the memory and runnable on the processor, wherein when the program or instruction is executed by the processor, the steps of a channel monitoring method are implemented, and the steps of the channel monitoring method comprises:
receiving, by the UE, first information sent by a network device, wherein the first information is used for indicating a monitoring behavior of the UE on a downlink control channel, and the first information comprises at least one of the following: time information or frequency domain information; and
monitoring or stopping monitoring, by the UE, a target downlink control channel according to the first information;
wherein the monitoring or stopping monitoring, by the UE, a target downlink control channel according to the first information comprises:
monitoring or stopping monitoring, by the UE, the target downlink control channel according to the first information in a case that the UE initiates the competition-based random access process and receives a random access message scheduled by a downlink control channel scrambled by using a specific radio network temporary identifier RNTI.
18 . The UE according to claim 17 , wherein the time information comprises at least one of the following: a start time or an application time, wherein the start time is a time of starting to monitor or starting to stop monitoring the downlink control channel, and the application time is a duration of monitoring or stopping monitoring the downlink control channel; or,
the frequency domain information comprises at least one of the following: a preset quantity of cells/component carriers, a bandwidth part BWP, a frequency range, a physical resource block PRB, or a cell group corresponding to a cell.
19 . The UE according to claim 18 , wherein in a case that the first information is downlink control information DCI, the start time is any one of the following: a next time unit, a first time, or a second time;
wherein the next time unit is a next time unit of a time unit in which the DCI is received, the first time is a time determined according to a symbol in which the DCI is received, and the second time is specified in a protocol.
20 . A non-transitory readable storage medium, storing a program or instruction, wherein when the program or instruction is executed by a processor, the steps of a channel monitoring method are implemented, and the steps of the channel monitoring method comprises:
receiving first information sent by a network device, wherein the first information is used for indicating a monitoring behavior of the UE on a downlink control channel, and the first information comprises at least one of the following: time information or frequency domain information; and
monitoring or stopping monitoring a target downlink control channel according to the first information;
wherein the monitoring or stopping monitoring a target downlink control channel according to the first information comprises:
monitoring or stopping monitoring, the target downlink control channel according to the first information in a case that the UE initiates the competition-based random access process and receives a random access message scheduled by a downlink control channel scrambled by using a specific radio network temporary identifier RNTI.