Managing UE measurements in an idle or inactive state
A user equipment (UE) can perform a method for managing inter-frequency measurements. The method includes: determining ( 902 ) one or more carrier frequencies for inter-frequency measurements while a radio connection between the UE and the RAN is not active; determining ( 904 ) that data is available for early data communication between the UE and a core network (CN); and determining ( 906 ) whether to suspend (i) inter-frequency measurements on at least one of the carrier frequencies or (ii) the early data communication.
1 . A method performed by a user equipment (UE) for managing idle/inactive measurements, the method comprising:
determining, by the UE, a plurality of carrier frequencies for idle/inactive measurements while a radio connection between the UE and a radio access network (RAN) is inactive;
while small data transmission (SDT) is suspended between the UE and a core network (CN), performing, by the UE, the idle/inactive measurements on the plurality of carrier frequencies; and
while the SDT is not suspended between the UE and a CN:
performing, by the UE, the idle/inactive measurements on a first subset of the plurality of carrier frequencies; and
refraining, by the UE, from performing the idle/inactive measurements on a second subset of the plurality of carrier frequencies.
2 . The method of claim 1 , wherein the determining the plurality of carrier frequencies for idle/inactive measurements includes:
receiving, from the RAN, an indication of the plurality of carrier frequencies.
3 . The method of claim 2 , wherein the receiving the indication of the plurality of carrier frequencies includes:
receiving the indication in one or more RRC messages.
4 . The method of claim 2 , wherein the receiving the indication of the plurality of carrier frequencies includes:
receiving the indication in one or more system information blocks (SIBs).
5 . The method of claim 4 , wherein the one or more SIBs include information about performing neighboring cell measurements relevant for cell re-selection.
6 . The method of claim 1 , wherein the second subset of the plurality of carrier frequencies includes non-serving carrier frequencies of non-serving cells.
7 . The method of claim 1 , wherein the first subset of the plurality of carrier frequencies includes at least one of: a serving carrier frequency of a cell via which the UE performs the SDT, or a non-serving carrier frequency of a non-serving cell.
8 . The method of claim 1 , further comprising initiating, by the UE, the SDT between the UE and the CN.
9 . A user equipment (UE) including processing hardware and configured to:
determine, by the UE, a plurality of carrier frequencies for idle/inactive measurements while a radio connection between the UE and a radio access network (RAN) is inactive;
while small data transmission (SDT) is suspended between the UE and a core network (CN), perform, by the UE, the idle/inactive measurements on the plurality of carrier frequencies; and
while the SDT is not suspended between the UE and a CN:
perform, by the UE, the idle/inactive measurements on a first subset of the plurality of carrier frequencies; and
refrain, by the UE, from performing the idle/inactive measurements on a second subset of the plurality of carrier frequencies.