Method for selecting sidelink resource and apparatus for the same

1 . An apparatus for selecting a sidelink resource, configured in a terminal equipment supporting sidelink discontinuous reception and sidelink partial sensing, the apparatus comprising:

a memory; and

processor circuitry coupled to the memory and configured to:

determine one or more monitoring slots for performing the sidelink partial sensing for a candidate slot according to configuration information of sidelink discontinuous reception,

wherein one or more periods and corresponding coefficients are determined, and for one period, the candidate slot is taken as a monitoring slot to which the one period corresponds after translating the candidate slot forward by P*k slots in a time domain, where P is the number of slots after the period is converted into a logical slot, and k is a coefficient corresponding to the period, and

wherein for the period, in a case where none of corresponding coefficient candidate values is able to make the monitoring slot to which the candidate slot corresponds be in an active time of the sidelink discontinuous reception, the corresponding coefficients are determined as the following value that: an interval between the monitoring slot and a reference time is made to be minimal and the interval is greater than or equal to a first threshold;

perform monitoring on sidelink control information at the one or more monitoring slots; and

perform resource selection according to a monitoring result;

wherein in a case where the processor circuitry is configured to control to perform period-based partial sensing in an inactive time of the sidelink discontinuous reception for a given period, a most recent sensing occasion from slots in the inactive time is taken as a monitoring slot included in the one or more monitoring slots.

2 . The apparatus according to claim 1 , wherein the configuration information of the sidelink discontinuous reception is at least used to determine an active time of the sidelink discontinuous reception, the active time of the sidelink discontinuous reception comprises at least one of: a running time of a sidelink OnDuration timer, a running time of an inactive timer or a running time of a retransmission timer.

3 . The apparatus according to claim 1 , wherein the one or more periods are all or part of sidelink reservation period candidate values configured in a resource pool.

4 . The apparatus according to claim 1 , wherein for the period, the corresponding coefficients are determined from a plurality of candidate values as the following value that: the monitoring slot to which the candidate slot corresponds is made to be in an active time of the sidelink discontinuous reception.

5 . The apparatus according to claim 1 , wherein for the period, the corresponding coefficients are determined from a plurality of candidate values as the following value that: the monitoring slot to which the candidate slot corresponds is made to be in an active time of the sidelink discontinuous reception, and an interval between the monitoring slot and a reference time is made to be minimal and the interval is greater than or equal to a first threshold.

6 . The apparatus according to claim 1 , wherein a plurality of candidate values of the coefficients is/are configured or preconfigured, or a maximum value of the plurality of candidate values of the coefficients is configured or preconfigured.

7 . The apparatus according to claim 1 , wherein the most recent sensing occasion is an occasion before a reference time, the reference time being a triggering time of resource selection or being one of one or more candidate slots.

8 . The apparatus according to claim 1 , wherein in a case where the processor circuitry is configured to control to perform the period-based partial sensing in an inactive time of the sidelink discontinuous reception, the processor circuitry only performs the monitoring on the most recent sensing occasion.

9 . An apparatus for selecting a sidelink resource, configured in a terminal equipment supporting sidelink discontinuous reception and sidelink partial sensing, the apparatus comprising:

a memory; and

processor circuitry coupled to the memory and configured to:

determine a monitoring slot for performing the sidelink partial sensing for each of a plurality of candidate slots according to configuration information of the sidelink discontinuous reception,

wherein one or more periods and corresponding coefficients of a candidate slot set formed by the plurality of candidate slots are determined, the coefficients of the plurality of candidate slots for one period being identical, and for one period, the candidate slot set is taken as a monitoring slot set to which the one period corresponds after translating the candidate slot set forward by P*k slots in a time domain, where P is the number of slots after the period is converted into a logical slot, and k is a coefficient corresponding to the period, and

wherein for the period, in a case where none of corresponding coefficient candidate values is able to make monitoring slot sets to which the candidate slot set corresponds and the active time of the sidelink discontinuous reception have at least one overlapped slot or the number of overlapped slots thereof to be greater than a second threshold, the corresponding coefficient is determined from multiple candidate values as the following value that: an interval between a last slot in the monitoring slot sets and a reference time to be minimal and the interval to be greater than or equal to a first threshold;

perform monitoring on sidelink control information at one or more monitoring slots; and

perform resource selection according to a monitoring result;

wherein in a case where the processor circuitry is configured to control to perform period-based partial sensing in an inactive time of the sidelink discontinuous reception for a given period, a most recent sensing occasion from slots in the inactive time is taken as a monitoring slot included in the one or more monitoring slots.

10 . The apparatus according to claim 9 , wherein the configuration information of the sidelink discontinuous reception is at least used to determine an active time of the sidelink discontinuous reception, the active time of the sidelink discontinuous reception comprises at least one of: a running time of a sidelink OnDuration timer, a running time of an inactive timer or a running time of a retransmission timer.

11 . The apparatus according to claim 9 , wherein the one or more periods are all or part of sidelink reservation period candidate values configured in a resource pool.

12 . The apparatus according to claim 9 , wherein for the period, the corresponding coefficients are determined from a plurality of candidate values as the following value that: a monitoring slot set to which the candidate slot set corresponds is made to at least partially overlap with the active time of the sidelink discontinuous reception.

13 . The apparatus according to claim 9 , wherein for the period, the corresponding coefficients are determined from a plurality of candidate values as the following value that: the number of overlapped slots of a monitoring slot set to which the candidate slot set corresponds and the active time of the sidelink discontinuous reception is made to be greater than a second threshold.

14 . The apparatus according to claim 9 , wherein for the period, the corresponding coefficients are determined from a plurality of candidate values as the following value that: a monitoring slot set to which the candidate slot set corresponds and the active time of the sidelink discontinuous reception are made to at least partially overlap with each other and/or the number of overlapped slots thereof to be greater than a second threshold and the number of overlapped slots is maximal.

15 . The apparatus according to claim 9 , wherein for the period, the corresponding coefficients are determined from a plurality of candidate values as the following value that: a monitoring slot set to which the candidate slot set corresponds and the active time of the sidelink discontinuous reception are made to at least partially overlap with each other and/or the number of overlapped slots thereof to be greater than a second threshold and an interval between a last slot in the monitoring slot set and a reference time to be minimal and the interval to be greater than or equal to a first threshold.

16 . A communication system, comprising:

a terminal equipment supporting sidelink discontinuous reception and sidelink partial sensing, the terminal equipment being configured to determine one or more monitoring slots for performing the sidelink partial sensing for one or more candidate slots according to configuration information of the sidelink discontinuous reception; perform monitoring on sidelink control information at the one or more monitoring slots; and perform resource selection according to a monitoring result;

wherein one or more periods and corresponding coefficients are determined, and for one period, the candidate slot is taken as a monitoring slot to which the one period corresponds after translating the candidate slot forward by P*k slots in a time domain, where P is the number of slots after the period is converted into a logical slot, and k is a coefficient corresponding to the period,

wherein for the period, in a case where none of corresponding coefficient candidate values is able to make the monitoring slot to which the candidate slot corresponds be in an active time of the sidelink discontinuous reception, the corresponding coefficients are determined as the following value that: an interval between the monitoring slot and a reference time is made to be minimal and the interval is greater than or equal to a first threshold, and

wherein in a case where the terminal equipment is configured to control to perform period-based partial sensing in an inactive time of the sidelink discontinuous reception for a given period, a most recent sensing occasion from slots in the inactive time is taken as a monitoring slot included in the one or more monitoring slots.