Guard timer to optimize E911 call handling
First Claim
1. A method comprising:
- determining, by a processor of a user equipment (UE), that a transceiver on the UE has disconnected from a first call to a public safety answering point (PSAP);
starting, by the processor, a proactive guard timer set to expire in a predetermined amount of time;
determining, by the processor, that the transceiver has connected a second call to the PSAP;
receiving, at the transceiver, an incoming call for the UE while the transceiver is still connected to the PSAP;
determining, by the processor, whether the proactive guard time has expired; and
either;
activating, by the processor, call-waiting on the UE for the incoming call when the proactive guard timer has not expired;
orsending, by the processor or the transceiver, the incoming call directly to voicemail if the proactive guard timer has expired.
3 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods for optimized call handling during e911 calls. Normally, when a user equipment (UE) is connected to a public safety answering point (PSAP)—e.g., is on a 911 call—all incoming calls are automatically routed to voicemail. In contrast, the systems and methods disclosed herein enable calls that were dialed within a predetermined time window of the 911 call to be sent through to call-waiting to enable the user to accept or reject the call. The system can use a “guard timer” to determine whether a call is within the predetermined time window. The system can include a single guard timer for all incoming calls—e.g., “any call made from the UE within the previous X minutes prior to the 911 call.” The system can also include individual guard timers for each call that expire separately relative to the call'"'"'s proximity to the 911 call.
27 Citations
26 Claims
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1. A method comprising:
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determining, by a processor of a user equipment (UE), that a transceiver on the UE has disconnected from a first call to a public safety answering point (PSAP); starting, by the processor, a proactive guard timer set to expire in a predetermined amount of time; determining, by the processor, that the transceiver has connected a second call to the PSAP; receiving, at the transceiver, an incoming call for the UE while the transceiver is still connected to the PSAP; determining, by the processor, whether the proactive guard time has expired; and
either;activating, by the processor, call-waiting on the UE for the incoming call when the proactive guard timer has not expired;
orsending, by the processor or the transceiver, the incoming call directly to voicemail if the proactive guard timer has expired. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method comprising:
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determining, by a processor of a network entity associated with a telecommunications network, that a user equipment (UE) has disconnected from a first call to a public safety answering point (PSAP); starting, by the processor, a proactive guard timer set to expire in a predetermined amount of time; determining, by the processor, that the UE has connected a second call to the PSAP; receiving, at a transceiver of the network entity, an incoming call for the UE while the UE is still connected to the PSAP; determining, by the processor, whether the proactive guard time has expired; and
either;sending, with the transceiver, the incoming call to the UE when the proactive guard timer has not expired;
orsending, with the transceiver, the incoming call directly to a voicemail server if the proactive guard timer has expired. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A user equipment (UE) comprising:
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a processor; a transceiver; and memory comprising program instructions that, when executed by the processor, cause the processor to; determine that the transceiver has disconnected from a first call to a public safety answering point (PSAP); start a proactive guard timer set to expire in a predetermined amount of time; determine that the transceiver has connected a second call to the PSAP; receive, at the transceiver, an incoming call for the UE while the transceiver is still connected to the PSAP; determine whether the proactive guard time has expired; and
either;activate call-waiting on the UE for the incoming call when the proactive guard timer has not expired;
orsend the incoming call directly to voicemail if the proactive guard timer has expired. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A network entity associated with a telecommunications network comprising:
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a processor; a transceiver; and memory comprising program instructions that, when executed by the processor, cause the processor to perform acts comprising; determining that a user equipment (UE) has disconnected from a first call to a public safety answering point (PSAP); starting a proactive guard timer set to expire in a predetermined amount of time; determining that the UE has connected to a second call to the PSAP; receiving, at the transceiver, an incoming call for the UE while the UE is still connected to the PSAP; determining whether the proactive guard time has expired; and
either;sending, with the transceiver, the incoming call to the UE when the proactive guard timer has not expired;
orsending, with the transceiver, the incoming call directly to a voicemail server if the proactive guard timer has expired. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification