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US 12,531,916 B2Granted
Emergency call reliability and session response time optimization through subscription selection
AssigneeQUALCOMM Incorporated
InventorsZhiguo Li, Ronghui Lin, Nan Zhang
Life of this patent
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Abstract
A user equipment (UE) may be equipped with multiple subscriber identity modules (SIMS) capable of supporting emergency calls. When an emergency call is detected, the UE may send emergency call requests to a network through the multiple SIMS. The UE may handle the emergency call through whichever SIM that receives the earliest successful response from the network. By utilizing multiple SIMS to establish the emergency call, both reliability and session response time may be enhanced.
Claims16
A user equipment (UE), comprising:
- a processor;
- a memory;
- and
- a transceiver,
- wherein the processor is configured to:
- send a plurality of internet protocol multimedia subsystem (IMS) emergency call (e-call) requests in parallel via a plurality of subscriber identity modules (SIMs), wherein;
- a first e-call request is sent in a first session initiation protocol (SIP) invite message via a first SIM of the UE, wherein the first SIM is registered for operation in a 5G new radio (NR) radio access technology (RAT);
- and
- a second e-call request is sent in a second SIP invite message via a second SIM of the UE, wherein the second SIM is registered for operation in a 4G long term evolution (LTE) RAT;
- receive at least one IMS e-call success response, wherein the at least one IMS e-call success response indicates that an e-call connection has been successfully established;
- and
- handle an e-call via a SIM through which the earliest-received e-call success response is received.
9 more elements
A method of a user equipment (UE), comprising:
- sending a plurality of internet protocol multimedia subsystem (IMS) emergency call (e-call) requests in parallel via a plurality of subscriber identity modules (SIMs), wherein:
- a first e-call request is sent in a first session initiation protocol (SIP) invite message via a first SIM of the UE, wherein the first SIM is registered for operation in a 5G new radio (NR) radio access technology (RAT), and
- a second e-call request is sent in a second SIP invite message via a second SIM of the UE, wherein the second SIM is registered for operation in a 4G long term evolution (LTE) RAT;
- receiving at least one IMS e-call success response, wherein the at least one IMS e-call success response indicates that an e-call connection has been successfully established;
- and
- handling an e-call via a SIM through which the earliest-received e-call success response is received.
3 more elements
A user equipment (UE) configured to operate in first and second radio access technologies (RATs), comprising:
- means for sending a plurality of internet protocol multimedia subsystem (IMS emergency call (e-call) requests in parallel via a plurality of subscriber identity modules (SIMs), wherein;
- a first e-call request is sent in a first session initiation protocol (SIP) invite message via a first SIMof the UE, wherein the first SIM is registered for operation in a 5G new radio (NR) radio access technology (RAT) respectively, and
- a second e-call request is sent in a second SIP invite message via a second SIM of the UE, wherein the second SIM is registered for operation in a 4G long term evolution (LTE) RAT;
- means for receiving at least one IMS e-call success respons, wherein the at least one IMS e-call success response indicates that an e-call connection has been successfully established;
- and
- means for handling an e-call via a SIM through which the earliest-received e-call success response is received.
3 more elements
A non-transitory computer-readable medium storing computer-executable instructions for a user equipment (UE), the computer-executable instructions comprising:
- one or more instructions instructing the UE to send a plurality of internet protocol multimedia subsystem (IMS) emergency call (e-call) requests in parallel via a plurality of subscriber identity modules (SIMs), wherein;
- a first e-call request is sent in a first session initiation protocol (SIP) invite message via a first SIM of the UE, wherein the first SIM is registered for operation in a 5G new radio (NR) radio access technology (RAT);
- and
- a second e-call request is sent in a second SIP invite message via a second SIM of the UE, wherein the second SIM is registered for operation in a 4G long term evolution (LTE) RAT;
- one or more instructions instructing the UE to receive at least one IMS e-call success response, wherein the at least one IMS e-call success response indicates that an e-call connection has been successfully established;
- and
- one or more instructions instructing the UE to handle an e-call via a SIM through which the earliest-received e-call success response is received.
4 more elements
Dependencies are inferred from the claim text.