Schedule gap for multi-SIM user equipment

1 . A method for wireless communication by a user equipment (UE), comprising:

identifying a network to access for communications;

transmitting an indication of schedule gap support information for the UE to the network, the UE comprising a first universal subscriber identity module (USIM) and a second USIM different from the first USIM, and the schedule gap support information comprising information associated with transitioning from a first radio access network RAN) associated with the first USIM to at least a second RAN associated with the second USIM;

transmitting UE network capability information to the network, wherein the UE network capability information comprises at least a portion of the schedule gap support information;

receiving information regarding one or more schedule gaps allowed by the network; and

transmitting a request for a schedule gap, based on the information regarding the one or more schedule gaps allowed by the network.

2 . The method of claim 1 , further comprising transmitting a set of UE radio capabilities to the network, wherein the set of UE radio capabilities comprises the schedule gap support information.

3 . The method of claim 1 , wherein the UE network capability information is transmitted, via a non access stratum (NAS) message, during an attach procedure, a tracking area update procedure, or a registration procedure with the network.

4 . The method of claim 3 , wherein the NAS message comprises an attach request, a tracking area update, or a registration request.

5 . The method of claim 1 , wherein the schedule gap support information comprises at least one of:

an indication of whether the UE is allowed to tune away to another RAN during connected mode;

an indication of whether to allow a schedule gap request from the UE;

an indication of one or more types of schedule gaps supported by a core network node;

an indication of one or more bands supported by the schedule gap;

an indication of amount of time of the schedule gap;

an indication of a schedule gap capability per dual connectivity (DC) combination; or

an indication of a schedule gap policy for each of one or more radio access technologies (RATs).

6 . An apparatus for wireless communication, comprising:

at least one processor configured to identify a network to access for communications;

a transmitter configured to:

transmit an indication of schedule gap support information for the apparatus to the network, the apparatus comprising a first universal subscriber identity module (USIM) and a second USIM different from the first USIM, and the schedule gap support information comprising information associated with transitioning from a first radio access network (RAN) associated with the first USIM to at least a second RAN associated with the second USIM; and

transmit user equipment (UE) network capability information to the network, wherein the UE network capability information comprises at least a portion of the schedule gap support information;

a receiver configured to receive information regarding one or more schedule gaps allowed by the network, wherein the transmitter is further configured to transmit a request for a schedule gap, based on the information regarding the one or more schedule gaps allowed by the network; and

a memory coupled to the at least one processor.

7 . The apparatus of claim 6 , wherein the transmitter is further configured to transmit a set of UE radio capabilities to the network, wherein the set of UE radio capabilities comprises the schedule gap support information.

8 . The apparatus of claim 6 , wherein the UE network capability information is transmitted, via a non access stratum (NAS) message, during an attach procedure, a tracking area update procedure, or a registration procedure with the network.

9 . The apparatus of claim 6 , wherein the schedule gap support information comprises at least one of:

an indication of whether the apparatus is allowed to tune away to another RAN during connected mode;

an indication of whether to allow a schedule gap request from the apparatus;

an indication of one or more types of schedule gaps supported by a core network node;

an indication of one or more bands supported by the schedule gap;

an indication of amount of time of the schedule gap;

an indication of a schedule gap capability per dual connectivity (DC) combination; or

an indication of a schedule gap policy for each of one or more radio access technologies (RATs).

10 . A method for wireless communication by a radio access network (RAN) node, comprising:

receiving an initial context setup request message from a core network node during an initial context setup procedure with the core network node, wherein the initial context setup request message comprises a set of user equipment (UE) radio capabilities associated with a UE that is associated with the RAN node and that comprises at least a first universal subscriber identity module (USIM) and a second USIM different from the first USIM and wherein the set of UE radio capabilities comprises schedule gap support information for the UE;

generating an initial context setup response message after receiving the initial context setup request message;

transmitting the initial context setup response message; and

transmitting an indication of a capability of the RAN node to support one or more schedule gaps in which the UE transitions from a first connected mode via the RAN node to a second connected mode via another RAN node.

11 . The method of claim 10 , wherein the schedule gap support information comprises information associated with transitioning from a first RAN associated with the first USIM of the UE to a second RAN associated with the second USIM of the UE.

12 . The method of claim 10 , wherein the schedule gap support information comprises at least one of:

an indication of whether the UE is allowed to tune away to another RAN during connected mode;

an indication of whether to allow a schedule gap request from the UE;

an indication of one or more types of schedule gaps supported by the core network node;

an indication of one or more bands supported by the schedule gap;

an indication of amount of time of the schedule gap;

an indication of a schedule gap capability per dual connectivity (DC) combination; or

an indication of a schedule gap policy for each of one or more radio access technologies (RATs).

13 . The method of claim 10 , wherein the RAN node is associated with the first USIM of the UE and the other RAN node is associated with the second USIM of the UE.

14 . The method of claim 10 , wherein the indication is transmitted via broadcast signaling.

15 . An apparatus for wireless communication, comprising:

a receiver configured to receive an initial context setup request message from a core network node during an initial context setup procedure with the core network node, wherein the initial context setup request message comprises a set of user equipment (UE) radio capabilities associated with a UE that is associated with the apparatus and that comprises at least a first universal subscriber identity module (USIM) and a second USIM different from the first USIM, wherein the set of UE radio capabilities comprises schedule gap support information for the UE, and wherein the apparatus is a radio access network (RAN) node;

at least one processor configured to generate an initial context setup response message after receiving the initial context setup request message;

a transmitter configured to:

transmit the initial context setup response message; and

transmit an indication of a capability of the apparatus to support one or more schedule gaps in which the UE transitions from a first connected node via the apparatus to a second connected node via another apparatus; and

a memory coupled to the at least one processor.

16 . The apparatus of claim 15 , wherein the schedule gap support information comprises information associated with transitioning from a first RAN associated with the first USIM of the UE to a second RAN associated with the second USIM of the UE.

17 . The apparatus of claim 15 , wherein the schedule gap support information comprises at least one of:

an indication of whether the UE is allowed to tune away to another RAN during connected mode;

an indication of whether to allow a schedule gap request from the UE;

an indication of one or more types of schedule gaps supported by the core network node;

an indication of one or more bands supported by the schedule gap;

an indication of amount of time of the schedule gap;

an indication of a schedule gap capability per dual connectivity (DC) combination; or

an indication of a schedule gap policy for each of one or more radio access technologies (RATs).

18 . The apparatus of claim 15 , wherein the apparatus is associated with the first USIM of the UE and the other apparatus is associated with the second USIM of the UE.

19 . The apparatus of claim 15 , wherein the indication is transmitted via broadcast signaling.

20 . A method for wireless communications by a core network node, comprising:

transmitting an initial context setup request message to a radio access network (RAN) node during an initial context setup procedure with the RAN node, wherein the initial context setup request message comprises a set of user equipment (UE) radio capabilities associated with a UE that is associated with the RAN node and that comprises at least a first universal subscriber identity module (USIM) and a second USIM different from the first USIM, wherein the set of UE radio capabilities comprises schedule gap support information for the UE, and wherein the schedule gap support information comprises information associated with transitioning from a first RAN associated with the first USIM of the UE to a second RAN associated with the second USIM of the UE; and

receiving, in response to the initial context setup request message, an initial context setup response message from the RAN node during the initial context setup procedure.

21 . The method of claim 20 , wherein the set of UE radio capabilities is transparent to the core network node.

22 . The method of claim 20 , wherein the schedule gap support information comprises at least one of:

an indication of whether the UE is allowed to tune away to another RAN during connected mode;

an indication of whether to allow a schedule gap request from the UE;

an indication of one or more types of schedule gaps supported by the core network node;

an indication of one or more bands supported by the schedule gap;

an indication of amount of time of the schedule gap;

an indication of a schedule gap capability per dual connectivity (DC) combination; or

an indication of a schedule gap policy for each of one or more radio access technologies (RATs).