CSSF design for UE with NeedForGap capability
Methods, apparatuses, and systems are disclosed for configuring measurement timings in connection with UEs that are capable of signaling whether a measurement gap (MG) is needed to measure a target frequency carrier. For example, a measurement period may be determined for the target frequency carrier based on the UE indicating that it supports per-frequency range (FR) MGs, and determining that the FR of the target frequency carrier does not include any current serving cell(s). If the UE indicates that no MG is needed to measure the target frequency carrier, then the measurement period may be based on an SMTC, and may be further based on a predefined effective measurement gap repetition period (MGRP). If the UE indicates that a MG is needed, then the measurement period may be based on the SMTC, and may be further based on the effective MGRP or a per-UE MGRP.
1. A method comprising:
by a user equipment (UE):
indicating to a cellular communication network that the UE supports per-frequency range (FR) measurement gaps (MGs);
determining whether the FR of a first frequency carrier contains at least one current serving cell;
indicating to the cellular communication network that a MG is needed for measurement of the first frequency carrier;
in response to determining that the FR of the first frequency carrier does not contain any current serving cell, determining a measurement period for the first frequency carrier based on a predetermined measurement timing configuration configured by the cellular communication network; and
performing at least one measurement of the first frequency carrier according to the determined measurement period.
2. The method according to claim 1 , wherein the predetermined measurement timing configuration is a synchronization signal block measurement timing configuration (SMTC).
3. The method according to claim 1 , wherein determining the measurement period is further based on a predefined effective measurement gap repetition period (MGRP).
4. The method according to claim 1 , wherein determining the measurement period is further based on a per-UE measurement gap repetition period (MGRP).
5. The method according to claim 4 , wherein determining the measurement period includes determining at least one of:
a minimum of the predetermined measurement timing configuration and the per-UE MGRP; or
a maximum of the predetermined measurement timing configuration and the per-UE MGRP.
6. The method according to claim 1 , further comprising:
receiving from the cellular communication network a plurality of per-FR MGs.
7. The method according to claim 1 , further comprising
receiving from the cellular communication network an assignment to measure a plurality of frequency carriers, the plurality of frequency carriers including the first frequency carrier.
8. The method according to claim 7 , further comprising:
indicating to the cellular communication network whether a MG is needed for measurement of each respective frequency carrier of the plurality of frequency carriers.
9. A method comprising:
by a cellular communication network:
receiving an indication from a user equipment (UE) that the UE supports per-frequency range (FR) measurement gaps (MGs);
providing to the UE a plurality of FR MGs, responsive to the indication that the UE supports per-FR MGs;
providing to the UE an assignment to measure a first frequency carrier;
determining whether the FR of the first frequency carrier contains at least one cell currently serving the UE;
receiving an indication from the UE that a MG is needed for measurement of the first frequency carrier;
in response to determining that the FR of the first frequency carrier does not contain any cell currently serving the UE, and further in response to receiving the indication that the MG is needed for measurement of the first frequency carrier, determining a measurement period for the first frequency carrier based on a predetermined measurement timing configuration; and
perform measurement scheduling based on the determined measurement period.
10. The method according to claim 9 , wherein the predetermined measurement timing configuration comprises a synchronization signal block measurement timing configuration (SMTC).
11. The method according to claim 9 , wherein determining the measurement period is further based on a predefined effective measurement gap repetition period (MGRP).
12. The method according to claim 9 , wherein determining the measurement period is further based on a per-UE measurement gap repetition period (MGRP).
13. The method according to claim 12 , wherein determining the measurement period includes determining at least one of:
a minimum of the predetermined measurement timing configuration and the per-UE MGRP; or
a maximum of the predetermined measurement timing configuration and the per-UE MGRP.
14. An apparatus for performing communication functions in a user equipment (UE) device, the apparatus comprising:
memory, storing software instructions; and
at least one processor configured to execute the software instructions to cause the apparatus to:
provide an indication for transmission to a cellular communication network that the UE device supports per-frequency range (FR) measurement gaps (MGs);
determine whether the FR of a first frequency carrier contains at least one current serving cell;
provide an indication for transmission to the cellular communication network that a MG is needed for measurement of the first frequency carrier;
in response to determining that the FR of the first frequency carrier does not contain any current serving cell, determine a measurement period for the first frequency carrier based on a predetermined measurement timing configuration configured by the cellular communication network; and
perform at least one measurement of the first frequency carrier according to the determined measurement period.
15. The apparatus according to claim 14 , wherein the predetermined measurement timing configuration is a synchronization signal block measurement timing configuration (SMTC).
16. The apparatus according to claim 14 , wherein determining the measurement period is further based on a predefined effective measurement gap repetition period (MGRP).
17. The apparatus according to claim 14 , wherein determining the measurement period is further based on a per-UE measurement gap repetition period (MGRP).
18. The apparatus according to claim 17 , wherein determining the measurement period includes determining at least one of:
a minimum of the predetermined measurement timing configuration and the per-UE MGRP; or
a maximum of the predetermined measurement timing configuration and the per-UE MGRP.
19. The apparatus according to claim 14 , wherein the at least one processor is configured to execute the software instructions to cause the apparatus to:
receive from the cellular communication network an assignment to measure a plurality of frequency carriers, the plurality of frequency carriers including the first frequency carrier.
20. The apparatus according to claim 19 , wherein the at least one processor is configured to execute the software instructions to cause the apparatus to:
provide an indication for transmission to the cellular communication network of whether a MG is needed for measurement of each respective frequency carrier of the plurality of frequency carriers.