Methods and devices for signal processing

1 . A method for use in a user equipment (UE) wherein a Medium Access Control (MAC) entity of the UE, comprises a primary discontinuous reception (DRX) group and a secondary DRX group, the method comprising:

monitoring a control channel for receiving a downlink control information (DCI), wherein the DCI is a first DCI received outside an active time of at least one of the primary DRX group or the secondary DRX group, wherein the first DCI comprises a wake-up indication on physical downlink control channel monitoring occasions prior to a next DRX cycle, and

receiving the first DCI on a first cell of the primary DRX group, wherein the first DCI indicates whether at least one serving cell in the primary DRX group and at least one serving cell in the secondary DRX group follow the wake-up indication of the first DCI based on C bits, where C≥1, in the first DCI,

wherein the wake-up indication comprises N=N1+N2 bits, where N≥1, N1 is a number of bit(s) indicating starting or not starting a timer associated with a DRX-On duration for the primary DRX group, and N2 is a number of bit(s) indicating starting or not starting a timer associated with a DRX-On duration for the secondary DRX group, and

wherein an indication by the wake-up indication to not start a timer associated with a DRX-On duration further indicates that the user equipment is not expected to be indicated to switch a bandwidth part.

2 . The method of claim 1 , wherein the DCI is a second DCI comprising a dormancy indication, wherein the second DCI is received outside an active time of at least one of the primary DRX group or the secondary DRX group, and wherein the dormancy indication indicates a dormancy behavior of at least one serving cell in at least one of the primary DRX group or the secondary DRX group, further comprising:

receiving the second DCI on a first cell of the primary DRX group, wherein:

at least one serving cell in the primary DRX group and at least one serving cell in the secondary DRX group follow the dormancy indication; and

wherein at least one serving cell in the secondary DRX group follows the dormancy indication of the second DCI based on N bits, where N≥1, in the second DCI.

3 . The method of claim 2 , wherein the monitoring the control channel for receiving the second DCI in the primary DRX group comprises:

monitoring the control channel for the second DCI based on a DRX status of the primary DRX group;

monitoring the control channel for the second DCI based on a DRX status of the secondary DRX group; or

monitoring the control channel for the second DCI based on the DRX statuses of the primary DRX group and secondary DRX group.

4 . The method of claim 1 , wherein the DCI is a third DCI comprising a dormancy indication, wherein the third DCI is received within an active time of at least one of the primary DRX group or the secondary DRX group, and wherein the dormancy indication indicates a dormancy behavior of at least one serving cell in at least one of the primary DRX group or the secondary DRX group, further comprising:

receiving the third DCI on a first cell of the primary DRX.

5 . The method of claim 4 , wherein the third DCI comprises N bits, where N≥1, indicating whether the dormancy indication is enabled for at least one serving cell in the primary DRX group and at least one serving cell in the secondary DRX group, wherein:

the dormancy indication received in one of the primary DRX group and the secondary DRX group indicates the dormancy behavior of at least one serving cell in the DRX group in which the dormancy indication is received; or

the dormancy indication received in one of the primary DRX group and the secondary DRX group indicates the dormancy behavior of at least one serving cell in the primary DRX group and at least one serving cell in the secondary DRX group.

6 . The method of claim 1 , wherein the DCI is a fourth DCI received outside an active time of at least one of the primary DRX group or the secondary DRX group, wherein the fourth DCI comprises a wake-up indication and a dormancy indication, comprising, on physical downlink control channel monitoring occasions prior to a next DRX cycle:

receiving the fourth DCI on a first cell of the primary DRX group; and wherein:

the fourth DCI indicates starting or not starting a timer associated with a DRX-On duration and dormancy behavior related operations in one of the primary DRX group and the secondary DRX group; and

wherein the fourth DCI indicates the UE to start or not a timer associated with a DRX-On duration and dormancy behavior related operations in the primary DRX group and the secondary DRX group.

7 . The method of claim 6 , wherein the monitoring the control channel for receiving the fourth DCI in the at least one serving cell in the primary DRX group comprises: monitoring the control channel for receiving the fourth DCI on a first cell of the primary DRX group based on a DRX status of the primary DRX group, and further comprising:

not monitoring the control channel for receiving the fourth DCI prior to the next long DRX cycle within the active time of one of the primary DRX group and secondary DRX group, and starting a timer associated with a DRX-On duration in the next DRX cycle when not monitoring the control channel for receiving the fourth DCI prior to the next long DRX cycle, wherein:

at least one secondary cell in the primary DRX group and at least one secondary cell in the secondary DRX group follow at least one of the wake-up indication or the dormancy indication; and

wherein the dormancy indication is applied to at least one serving cell of the secondary DRX group based on at least one of predefined information, a higher layer signaling, or N bits, where N≥1, in the fourth DCI, wherein the higher layer signaling comprises at least one of a radio resource control parameter or an MAC control entity.

8 . The method of claim 1 , further comprising: receiving the DCI in one of the primary DRX group and the secondary DRX group, wherein the DCI includes at least one of a first indication indicating a search space set group switching or a second indication indicating a physical downlink control channel (PDCCH) skipping, wherein at least one serving cell in the one of the primary DRX group and the secondary DRX group in which the DCI is received follows at least one of the first indication or the second indication; and

wherein when the DCI is received within an active time of at least one of the primary DRX group or the secondary DRX group and the method comprises following at least one of the first indication or the second indication.

9 . A method for use in a base station, the method comprising:

configuring, to a user equipment (UE), a medium access control (MAC) entity comprising a primary discontinuous reception (DRX) group and a secondary DRX group, and

transmitting a first downlink control information (DCI) on a control channel, on a first cell of the primary DRX group, wherein the DCI is a first DCI transmitted outside an active time of at least one of the primary DRX group or the secondary DRX group, wherein the first DCI comprises a wake-up indication on physical downlink control channel monitoring occasions prior to a next DRX cycle,

wherein the first DCI indicates whether at least one serving cell in the primary DRX group and at least one serving cell in the secondary DRX group follow the wake-up indication of the first DCI based on C bits, where C≥1, in the first DCI,

wherein the wake-up indication comprises N=N1+N2 bits, where N≥1, N1 is a number of bit(s) indicating starting or not starting a timer associated with a DRX-On duration for the primary DRX group, and N2 is a number of bit(s) indicating starting or not starting a timer associated with a DRX-On duration for the secondary DRX group, and

wherein an indication by the wake-up indication to not start a timer associated with a DRX-On duration further indicates that the user equipment is not expected to be indicated to switch a bandwidth part.

10 . The method of claim 9 , wherein the DCI is a second DCI comprising a dormancy indication, wherein the second DCI is transmitted outside an active time of at least one of the primary DRX group or the secondary DRX group, and wherein the dormancy indication indicates a dormancy behavior of at least one serving cell in at least one of the primary DRX group or the secondary DRX group; and

wherein the transmitting the DCI on the control channel in at least one serving cell in at least one of the primary DRX group and the secondary DRX group comprises:

transmitting the second DCI on a first cell of the primary DRX group.

11 . The method of claim 9 , wherein the DCI is a third DCI comprising a dormancy indication, wherein the third DCI is transmitted within an active time of at least one of the primary DRX group or the secondary DRX group, and wherein the dormancy indication indicates a dormancy behavior of at least one serving cell in at least one of the primary DRX group or the secondary DRX group;

wherein the transmitting the DCI on the control channel in at least one serving cell in at least one of the primary DRX group and the secondary DRX group comprises:

transmitting the third DCI on a first cell of the primary DRX group.

12 . The method of claim 9 , wherein the DCI is a fourth DCI transmitted outside an active time of at least one of the primary DRX group or the secondary DRX group, wherein the fourth DCI comprises a wake-up indication and a dormancy indication;

wherein the transmitting the DCI on the control channel in at least one serving cell in at least one of the primary DRX group and the secondary DRX group comprises, on physical downlink control channel monitoring occasions prior to a next DRX cycle: transmitting the fourth DCI on a first cell of the primary DRX group, or transmitting the fourth DCI on a second cell of the secondary DRX group, or transmitting the fourth DCI on the first cell of the primary DRX group and transmitting the fourth DCI on the second cell of the secondary DRX group, and

wherein:

the fourth DCI indicates starting or not starting a timer associated with a DRX-On duration and dormancy behavior related operations in one of the primary DRX group and the secondary DRX group; and

wherein the dormancy indication is applied to at least one serving cell of the secondary DRX group based on at least one of predefined information, a higher layer signaling, or N bits, where N≥1, in the fourth DCI, wherein the higher layer signaling comprises at least one of a radio resource control parameter or an MAC control entity.

13 . The method of claim 9 , wherein the DCI includes at least one of a first indication indicating a search space set group switching or a second indication indicating a physical downlink control channel (PDCCH) skipping.

14 . A user equipment (UE), wherein a Medium Access Control (MAC) entity of the UE, comprises a primary discontinuous reception (DRX) group and a secondary DRX group, the user equipment comprising a processor configured to:

monitor a control channel for receiving a downlink control information (DCI), wherein the DCI is a first DCI received outside an active time of at least one of the primary DRX group or the secondary DRX group, wherein the first DCI comprises a wake-up indication on physical downlink control channel monitoring occasions prior to a next DRX cycle, and

receive the first DCI on a first cell of the primary DRX group, wherein the first DCI indicates whether at least one serving cell in the primary DRX group and at least one serving cell in the secondary DRX group follow the wake-up indication of the first DCI based on C bits, where C≥1, in the first DCI,

wherein the wake-up indication comprises N=N1+N2 bits, where N≥1, N1 is a number of bit(s) indicating starting or not starting a timer associated with a DRX-On duration for the primary DRX group, and N2 is a number of bit(s) indicating starting or not starting a timer associated with a DRX-On duration for the secondary DRX group, and

wherein an indication by the wake-up indication to not start a timer associated with a DRX-On duration further indicates that the user equipment is not expected to be indicated to switch a bandwidth part.

15 . A base station, comprising:

a processor configured to configure, to a user equipment (UE), a medium access control (MAC) entity comprising a primary discontinuous reception (DRX) group and a secondary DRX group; and

a communication unit, configured to transmit a first downlink control information (DCI), on a control channel, on a first cell of the primary DRX group, wherein the DCI is a first DCI transmitted outside an active time of at least one of the primary DRX group or the secondary DRX group, wherein the first DCI comprises a wake-up indication on physical downlink control channel monitoring occasions prior to a next DRX cycle,

wherein the first DCI indicates whether at least one serving cell in the primary DRX group and at least one serving cell in the secondary DRX group follow the wake-up indication of the first DCI based on C bits, where C≥1, in the first DCI,

wherein the wake-up indication comprises N=N1+N2 bits, where N≥1, N1 is a number of bit(s) indicating starting or not starting a timer associated with a DRX-On duration for the primary DRX group, and N2 is a number of bit(s) indicating starting or not starting a timer associated with a DRX-On duration for the secondary DRX group, and

wherein an indication by the wake-up indication to not start a timer associated with a DRX-On duration further indicates that the user equipment is not expected to be indicated to switch a bandwidth part.