Method and device for wireless communication with discontinuous reception and link monitoring
The present application discloses a method and a device for wireless communications, including: receiving a first signaling, the first signaling used for configuring DRX of a first cell group; the DRX of the first cell group configured by the first signaling being for a first MAC entity; and listening over a PDCCH within active time of any DRX group corresponding to the first cell group; and performing a first radio link quality evaluation of a first reference signal resource set within a first evaluation cycle to determine whether a result of the first radio link quality evaluation is worse than a first threshold. Through the first signaling, the present application not only can support more flexible DRX but also ensures the performance of link monitoring.
1 . A first user equipment (UE), the UE comprising:
a transceiver; and
a processor, wherein the transceiver and the processor are configured to:
receive a first signal indicative of Discontinuous Reception (DRX) configuration associated with a first cell group for a Medium Access Control (MAC) entity;
determine, based on the signal, one or more DRX cycle lengths;
determine a set of active time windows for the DRX of the first cell group based on: the one or more DRX cycle lengths, a system frame number, and a subframe number;
monitor a Physical Downlink Control Channel (PDCCH) during the set of active time windows;
determine a plurality of time intervals between adjacent active time windows of the set of active time windows, wherein the plurality of time intervals include at least two different values;
perform a radio link quality measurement on a reference signal resource set within an evaluation cycle;
determine whether a result of the radio link quality measurement is below a threshold;
determine a number of measurement cycles within the evaluation cycle, wherein the number is based on: a first parameter associated with a measurement gap, and a second parameter associated with the plurality of time intervals; and
apply the DRX configuration for the first cell group, wherein the DRX configuration is independent of point-to-multipoint (PTM) operation.
2 . The UE according to claim 1 , wherein:
the one or more DRX cycle lengths comprise a single DRX cycle length, or
a plurality of DRX cycles are configured by the signal, wherein a number of the plurality of DRX cycles is used to determine a value of the second parameter, and wherein the number of the plurality of DRX cycles configured by the signal respectively correspond to equal number of consecutive time windows in the set of active time windows.
3 . The UE according to claim 2 , wherein:
each active time window in the first set of active time windows corresponds to one execution of a DRX on-duration timer.
4 . The UE according to claim 1 , wherein:
the one or more DRX cycle lengths comprise a single DRX cycle length, and wherein a number of active windows within the DRX cycle is used to determine the second parameter.
5 . The UE according to claim 1 , wherein:
a third parameter is a real constant, and the number of measurement cycles is based on a product of the first parameter, the second parameter and the third parameter.
6 . The UE according to claim 4 , wherein:
a third parameter is a real constant, and the number of measurement cycles is based on a product of the first parameter, the second parameter and the third parameter.
7 . The UE according to claim 1 , wherein:
a fourth parameter is associated with Frequency Range 2 (FR2), and the number of measurement cycles is further based on a product of the first parameter, the second parameter and the fourth parameter, and wherein the radio link quality measurement is performed for FR2.
8 . The UE according to claim 4 , wherein:
a fourth parameter is associated with FR2, and the number of measurement cycles is further based on a product of the first parameter, the second parameter and the fourth parameter, and wherein the radio link quality measurement is performed for FR2.
9 . The UE according to claim 1 , wherein:
a fifth parameter is related to a type of reference signal resources, and wherein:
on a condition that the type of the reference signal resources is Channel State Information-Reference Signal (CSI-RS) and a density of the reference signal resources is more than a threshold density, the number of measurement cycles is further based on a product of the first parameter, the second parameter and the fifth parameter, and
on a condition that the type of the reference signal resources in the first reference signal resource set is Synchronization Signal Block (SS-Block, i.e., SSB), the number of measurement cycles is independent of the fifth parameter, and
on a condition that the type of the reference signal resources is the CSI-RS but the density of the reference signal resources is not more than the threshold density, the number of measurement cycles is independent of the fifth parameter.
10 . The UE according to claim 4 , wherein:
a fifth parameter is related to a type of reference signal resources, and wherein:
on a condition that the type of the reference signal resources is CSI-RS and a density of the reference signal resources is more than a threshold density, the number of measurement cycles is further based on a product of the first parameter, the second parameter and the fifth parameter, and
on a condition that the type of the reference signal resources is SSB, the number of measurement cycles is independent of the fifth parameter, and
on a condition that the type of the reference signal resources is the CSI-RS but the density of the reference signal resources is not more than the threshold density, the number of measurement cycles is independent of the fifth parameter.
11 . The UE according to claim 1 , wherein:
a sixth parameter is associated with a type of cell or network associated with CSI-RS resources, and the number of measurement cycles is further based on a product of the first parameter, the second parameter and the sixth parameter, and wherein radio link quality measurement comprises beam failure detection.
12 . The UE according to claim 4 , wherein:
a sixth parameter is associated with a type of cell or network associated with CSI-RS resources, and the number of measurement cycles is further based on a product of the first parameter, the second parameter and the sixth parameter, and wherein radio link quality measurement comprises beam failure detection.
13 . The UE according to claim 1 , wherein:
a seventh parameter set is associated with a loose measurement criterion, and wherein the number of measurement cycles is further based on a product of the first parameter, the second parameter and any parameter in the seventh parameter set.
14 . The UE according to claim 4 , characterized in that
a seventh parameter set is associated with a loose measurement criterion, and wherein the number of measurement cycles is further based on a product of the first parameter, the second parameter and any parameter in the seventh parameter set.
15 . The UE according to claim 1 , wherein:
an eighth parameter is associated with a number of elements in the plurality of time intervals, and an eighth parameter set comprises at least the first parameter, and wherein:
on a condition that the number of the elements in the plurality of time intervals is greater than 1, the number of measurement cycles is equal to a sum of the eighth parameter and a product of the second parameter and at least the first parameter in the eighth parameter set.
16 . The UE according to claim 4 , wherein:
an eighth parameter is associated with a number of elements in the plurality of time intervals, and an eighth parameter set comprises at least the first parameter, and wherein:
on a condition that the number of the elements in the plurality of time intervals is greater than 1, the number of measurement cycles is based on a sum of the eighth parameter and a product of the second parameter and at least the first parameter in the eighth parameter set.
17 . The UE according to claim 1 , wherein the one or more DRX cycle lengths comprise a long DRX cycle.
18 . The UE according to claim 1 , wherein the one or more DRX cycle lengths comprise a plurality of time lengths, and wherein the signal further indicates a cycle formed by a sum of at least two of the plurality of time lengths.
19 . The UE according to claim 18 , wherein the signal comprises a template used to determine the set of active time windows, and wherein the template indicates a set of consecutive active time windows.
20 . A method in a user equipment (UE), the method comprising:
receiving a signal, indicative of Discontinuous Reception (DRX) configuration associated with a first cell group for a Medium Access Control (MAC) entity;
determining, based on the signal, one or more DRX cycle lengths;
determining a set of active time windows for the DRX of the first cell group based on: the one or more DRX cycle lengths, a system frame number, and a subframe number;
monitoring a Physical Downlink Control Channel (PDCCH) during the set of active time windows;
determining a plurality of time intervals between adjacent active time windows of the set of active time windows, wherein the plurality of time intervals include at least two different values;
performing a radio link quality measurement on a reference signal resource set within an evaluation cycle;
determining whether a result of the radio link quality measurement is below a threshold;
determining a number of measurement cycles within the evaluation cycle, wherein the number is based on: a first parameter associated with a measurement gap, and a second parameter associated with the plurality of time intervals; and
applying the DRX configuration for the first cell group, wherein the DRX configuration is independent of point-to-multipoint (PTM) operation.