Adaptation of communication parameters for a user equipment
A UE includes a transceiver configured to receive an adaptation request (AR) via a DCI format in a PDCCH. The UE further includes a processor configured to configure the transceiver to operate in a first state associated with a reception of a first DCI format in a first search space set in response to an AR reception outcome, and to operate in a second state associated with a reception of a second DCI format in a second search space set. A BS includes a transceiver configured to transmit an AR via a DCI format in a PDCCH. The BS includes a processor configured to configure the transceiver to operate in a first state associated with a transmission of a first DCI format in a first search space set, and to operate in a second state associated with a transmission of a second DCI format in a second search space set.
1. A user equipment (UE) comprising:
a transceiver configured to receive a first physical downlink control channel (PDCCH), wherein the first PDCCH provides a first downlink control information (DCI) format that:
includes a first adaptation request (AR) to indicate a value for a time duration for skipping PDCCH monitoring; and
schedules a reception of a physical downlink shared channel (PDSCH); and
a processor operably coupled to the transceiver, the processor configured to indicate to the transceiver to operate in a first state in response to the first AR,
wherein the transceiver is further configured to:
operate in the first state after a predetermined application delay, and
receive a second PDCCH, wherein:
the second PDCCH provides a second DCI format that includes a second AR, and
an end of the second PDCCH reception is after an end of the first PDCCH reception by a time that is smaller than the predetermined application delay, and
wherein the processor is further configured to determine that the second AR is the same as the first AR.
2. The UE of claim 1 , wherein the transceiver is configured to:
receive a third PDCCH and the PDSCH, wherein:
the third PDCCH provides a third DCI format schedules a reception of the PDSCH, and
a time between the end of the third PDCCH reception and a beginning of the PDSCH reception is not smaller than a first minimum slot offset, wherein the first state corresponds to the first minimum slot offset; or
receive a fourth PDCCH and transmit a physical uplink shared channel (PUSCH), wherein:
the fourth PDCCH provides a fourth DCI format schedules a transmission of the PUSCH, and
a time between the end of the fourth PDCCH reception and a beginning of the PUSCH transmission is not smaller than a second minimum slot offset, wherein the first state corresponds to the second minimum slot offset.
3. The UE of claim 2 , wherein the transceiver is further configured to receive:
a fifth PDCCH that provides a fifth DCI format, wherein the fifth DCI format schedules a reception of a channel state information reference signal (CSI-RS), and
the CSI-RS, wherein a time between the end of the fifth PDCCH reception and the beginning of the CSI-RS reception is not smaller than the first minimum slot offset and wherein the first state corresponds to the first minimum slot offset.
4. The UE of claim 1 , wherein:
the first state corresponds to suspending PDCCH receptions for a time duration for skipping PDCCH monitoring; and
the transceiver is further configured to resume the PDCCH receptions after the first state.
5. The UE of claim 1 , wherein the transceiver is further configured to transmit assistance information on one or more preferred values for at least one of:
a first minimum slot offset,
a second minimum slot offset,
a maximum number of spatial layers, and
the time duration for skipping PDCCH monitoring.
6. The UE of claim 1 , wherein:
the transceiver is further configured to receive:
first information of one or more candidate values for a first minimum slot offset, and
second information of one or more candidate values for a second minimum slot offset; and
the processor is configured to determine a joint adaptation table, wherein an n-th row of the joint adaptation table is associated with an n-th candidate value from the one or more candidate values for the first minimum slot offset and an n-th candidate value from the one or more candidate values for the second minimum slot offset.
7. The UE of claim 6 , wherein:
the processor is further configured to determine that a value of the first AR included in the first DCI format is a row index, k, of the joint adaptation table, wherein k>=0,
a value for the first minimum slot offset is a k-th applicable value from the one or more candidate values for the first minimum slot offset, and
a value for the second minimum slot offset is a k-th applicable value from the one or more candidate values for the second minimum slot offset.
8. The UE of claim 1 , wherein the transceiver is further configured to receive information of a maximum number of spatial layers for a bandwidth part (BWP).
9. The UE of claim 1 , wherein the transceiver is further configured to transmit assistance information on a preferred value for one or more aspects of a discontinuous reception (DRX) configuration, wherein the one or more aspects include:
a long DRX cycle,
a short DRX cycle, and
a DRX-inactivity timer.
10. A base station comprising:
a transceiver configured to transmit a first physical downlink control channel (PDCCH), wherein the first PDCCH provides a first downlink control information (DCI) format that:
includes a first adaptation request (AR) to indicate a value for: a time duration for skipping PDCCH monitoring; and
schedules a reception of a physical downlink shared channel (PDSCH); and
a processor operably connected to the transceiver, the processor configured to indicate to the transceiver to operate in a first state based on transmission of the AR,
wherein the transceiver is further configured to:
operate in the first state after a predetermined application delay, and
transmit a second PDCCH, wherein:
the second PDCCH provides a second DCI format that includes a second AR, and
an end of the second PDCCH transmission is after an end of the first PDCCH transmission by a time that is smaller than the predetermined application delay, and
wherein the processor is further configured to determine that the second AR is the same as the first AR.
11. The base station of claim 10 , wherein the transceiver is configured to:
transmit a third PDCCH and the PDSCH, wherein:
the third PDCCH provides a third DCI format schedules a transmission of the PDSCH, and
a time between the end of the third PDCCH transmission and a beginning of the PDSCH transmission is not smaller than a first minimum slot offset, wherein the first state corresponds to the first minimum slot offset; or
transmit a fourth PDCCH and receive a physical uplink shared channel (PUSCH), wherein:
the fourth PDCCH provides a fourth DCI format schedules a reception of the PUSCH, and
a time between the end of the fourth PDCCH transmission and a beginning of the PUSCH reception is not smaller than a second minimum slot offset, wherein the first state corresponds to the second minimum slot offset.
12. The base station of claim 11 , wherein the transceiver is further configured to transmit:
a fifth PDCCH that provides a fifth DCI format, wherein the fifth DCI format schedules a transmission of a channel state information reference signal (CSI-RS), and
the CSI-RS, wherein a time between the end of the fifth PDCCH transmission and the beginning of the CSI-RS transmission is not smaller than the first minimum slot offset and wherein the first state corresponds to the first minimum slot offset.
13. The base station of claim 10 , wherein:
the first state corresponds to suspending PDCCH transmissions for a time duration for skipping PDCCH monitoring; and
the transceiver is further configured to resume the PDCCH transmissions after the first state.
14. The base station of claim 10 , wherein the transceiver is further configured to receive assistance information on one or more preferred values for at least one of:
a first minimum slot offset,
a second minimum slot offset,
and
the time duration for skipping PDCCH monitoring.
15. The base station of claim 10 , wherein:
the transceiver is further configured to transmit:
first information of one or more candidate values for a first minimum slot offset, and
second information of one or more candidate values for a second minimum slot offset; and
the processor is configured to determine a joint adaptation table, wherein an n-th row of the joint adaptation table is associated with an n-th candidate value from the one or more candidate values for the first minimum slot offset and an n-th candidate value from the one or more candidate values for the second minimum slot offset.
16. The base station of claim 15 , wherein:
the processor is further configured to determine that a value of the first AR included in the first DCI format is a row index, k, of the joint adaptation table, wherein k>=0,
a value for the first minimum slot offset is a k-th applicable value from the one or more candidate values for the first minimum slot offset, and
a value for the second minimum slot offset is a k-th applicable value from the one or more candidate values for the second minimum slot offset.
17. The base station of claim 10 , wherein the transceiver is further configured to transmit third information of a maximum number of spatial layers for a bandwidth part (BWP).
18. The base station of claim 10 , wherein the transceiver is further configured to receive assistance information on a preferred value for one or more aspects of a discontinuous reception (DRX) configuration, wherein the one or more aspects include:
a long DRX cycle,
a short DRX cycle, and
a DRX-inactivity timer.
19. A method for a user equipment (UE), the method comprising:
receiving, by a transceiver in the UE, a first physical downlink control channel (PDCCH), wherein the first PDCCH provides a first downlink control information (DCI) format that:
includes a first adaptation request (AR) to indicate a value for a time duration for skipping PDCCH monitoring; and
schedules a reception of a physical downlink shared channel (PDSCH); and
indicating, by a processor in the UE, to the transceiver to operate in a first state in response to the first AR;
operating the transceiver in a first state after a predetermined application delay;
receiving a second PDCCH, wherein:
the second PDCCH provides a second DCI format that includes a second AR, and
an end of the second PDCCH reception is after an end of the first PDCCH reception by a time that is smaller than the predetermined application delay; and
determining that the second AR is the same as the first AR.
20. The method of claim 19 , further comprising:
receiving a third PDCCH and PDSCH, wherein:
the third PDCCH provides a third DCI format schedules a reception of the PDSCH, and
a time between the end of the third PDCCH reception and a beginning of the PDSCH reception is not smaller than a first minimum slot offset, wherein the first state corresponds to the first minimum slot offset; or
receiving a fourth PDCCH and transmit a physical uplink shared channel (PUSCH), wherein:
the fourth PDCCH provides a fourth DCI format schedules a transmission of the PUSCH, and
a time between the end of the fourth PDCCH reception and a beginning of the PUSCH transmission is not smaller than a second minimum slot offset, wherein the first state corresponds to the second minimum slot offset.
21. The method of claim 20 , further comprising:
receiving a fifth PDCCH that provides a fifth DCI format, wherein the fifth DCI format schedules a reception of a channel state information reference signal (CSI-RS); and
receiving the CSI-RS, wherein a time between the end of the fifth PDCCH reception and the beginning of the CSI-RS reception is not smaller than the first minimum slot offset and wherein the first state corresponds to the first minimum slot offset.
22. The method of claim 19 , wherein:
the first state corresponds to suspending PDCCH receptions for a time duration for skipping PDCCH monitoring; and
the transceiver is further configured to resume the PDCCH receptions after the first state.
23. The method of claim 19 , further comprising transmitting assistance information on one or more preferred values for at least one of:
a first minimum slot offset,
a second minimum slot offset,
and
the time duration for skipping PDCCH monitoring.
24. The method of claim 19 , further comprising:
receiving first information of one or more candidate values for a first minimum slot offset;
receiving second information of one or more candidate values for a second minimum slot offset; and
determining a joint adaptation table, wherein an n-th row of the joint adaptation table is associated with an n-th candidate value from the one or more candidate values for the first minimum slot offset and an n-th candidate value from the one or more candidate values for the second minimum slot offset.
25. The method of claim 24 , further comprising:
determining that a value of the first AR included in the first DCI format is a row index, k, of the joint adaptation table, wherein k>=0,
a value for the first minimum slot offset is a k-th applicable value from the one or more candidate values for the first minimum slot offset, and
a value for the second minimum slot offset
is a k-th applicable value from the one or more candidate values for the second minimum slot offset.
26. The method of claim 19 , further comprising receiving information of a maximum number of spatial layers for a bandwidth part (BWP).
27. The method of claim 19 , further comprising transmitting assistance information on a preferred value for one or more aspects of a discontinuous reception (DRX) configuration, wherein the one or more aspects include:
a long DRX cycle,
a short DRX cycle, and
a DRX-inactivity timer.