Optimizations to circuit-switched fallback (csfb) procedure
AssigneeQUALCOMM Incorporated
InventorArvind Swaminathan
Life of this patent
Estimating the term…
Abstract
Circuit-switched fallback (CSFB) is a technique to deliver voice-services to a mobile, when the mobile is camped in a long-term evolution (LTE) network. Certain aspects of the present disclosure provide techniques that may help reduce delays in call setup related to CSFB and, in some cases, avoid unnecessary paging.
Claims60
A method for wireless communications at a user equipment (UE) capable of communicating via first and second radio access technologies (RATs), the method comprising:
- transmitting a UE capability message with one or more parameters selected to indicate capabilities that result in a reduced delay in processing an extended service request (ESR) message by a base station of the first RAT;
- receiving services via the base station of the first RAT;
- receiving, via a base station of the second RAT, a paging message targeting the UE;
- and
- transmitting the extended service request (ESR) message to the base station of the first RAT to request suspension of context for the UE in the first RAT.
An apparatus for wireless communications capable of communicating via first and second radio access technologies (RATs), comprising:
- means for transmitting a capability message with one or more parameters selected to indicate capabilities that result in a reduced delay in processing an extended service request (ESR) message by a base station of the first RAT;
- means for receiving services via the base station of the first RAT;
- means for receiving, via a base station of the second RAT, a paging message targeting the apparatus;
- and
- means for transmitting the extended service request (ESR) message to the base station of the first RAT to request suspension of context for the UE in the first RAT.
An apparatus for wireless communications capable of communicating via first and second radio access technologies (RATs), comprising:
- at least one processor configured to transmit a capability message with one or more parameters selected to indicate capabilities that result in a reduced delay in processing an extended service request (ESR) message by a base station of the first RAT, receive services via the base station of the first RAT, receive, via a base station of the second RAT, a paging message targeting the UE, and transmit the extended service request (ESR) message to the base station of the first RAT to request suspension of context for the UE in the first RAT;
- and
- a memory coupled with the at least one processor.
A computer program product for wireless communications at a user equipment (UE) capable of communicating via first and second radio access technologies (RATs), comprising a computer readable medium having instructions stored thereon, the instructions executable by one or more processors for:
- transmitting a UE capability message with one or more parameters selected to indicate capabilities that result in a reduced delay in processing an extended service request (ESR) message by a base station of the first RAT;
- receiving services via the base station of the first RAT;
- receiving, via a base station of the second RAT, a paging message targeting the UE;
- and
- transmitting the extended service request (ESR) message to the base station of the first RAT to request suspension of context for the UE in the first RAT.
A method for wireless communications at a user equipment (UE) capable of communicating via first and second radio access technologies (RATs), the method comprising:
- receiving services via a base station of the first RAT;
- receiving, via a base station of the second RAT, a paging message targeting the UE;
- transmitting an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the UE in the first RAT;
- determining a probability is relatively high that the ESR message was successfully received at the base station of the first RAT;
- and
- performing registration in the second RAT, in response to the determination, without waiting for a response to the ESR message.
An apparatus for wireless communications capable of communicating via first and second radio access technologies (RATs), comprising:
- means for receiving services via a base station of the first RAT;
- means for receiving, via a base station of the second RAT, a paging message targeting the UE;
- means for transmitting an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the apparatus in the first RAT;
- means for determining a probability is relatively high that the ESR message was successfully received at the base station of the first RAT;
- and
- means for performing registration in the second RAT, in response to the determination, without waiting for a response to the ESR message.
An apparatus for wireless communications capable of communicating via first and second radio access technologies (RATs), comprising:
- at least one processor configured to receive services via a base station of the first RAT, receive, via a base station of the second RAT, a paging message targeting the UE, transmit an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the UE in the first RAT, determine a probability is relatively high that the ESR message was successfully received at the base station of the first RAT, and perform registration in the second RAT, in response to the determination, without waiting for a response to the ESR message;
- and
- a memory coupled with the at least one processor.
A computer program product for wireless communications at a user equipment (UE) capable of communicating via first and second radio access technologies (RATs), comprising a computer readable medium having instructions stored thereon, the instructions executable by one or more processors for:
- receiving services via a base station of the first RAT;
- receiving, via a base station of the second RAT, a paging message targeting the UE;
- transmitting an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the UE in the first RAT;
- determining a probability is relatively high that the ESR message was successfully received at the base station of the first RAT;
- and
- performing registration in the second RAT, in response to the determination, without waiting for a response to the ESR message.
A method for wireless communications at a user equipment (UE) capable of communicating via first and second radio access technologies (RATs), the method comprising:
- receiving services via a base station of the first RAT;
- receiving, via a base station of the second RAT, a paging message targeting the UE;
- and
- transmitting a Short Message Service (SMS) message using the second RAT, the SMS message containing an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the UE in the first RAT.
An apparatus for wireless communications capable of communicating via first and second radio access technologies (RATs), comprising:
- means for receiving services via a base station of the first RAT;
- means for receiving, via a base station of the second RAT, a paging message targeting the apparatus;
- and
- means for transmitting a Short Message Service (SMS) message using the second RAT, the SMS message containing an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the apparatus in the first RAT.
An apparatus for wireless communications capable of communicating via first and second radio access technologies (RATs), comprising:
- at least one processor configured to receive services via a base station of the first RAT, receive, via a base station of the second RAT, a paging message targeting the UE, and transmit a Short Message Service (SMS) message using the second RAT, the SMS message containing an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the apparatus in the first RAT;
- and
- a memory coupled with the at least one processor.
A computer program product for wireless communications at a user equipment (UE) capable of communicating via first and second radio access technologies (RATs), comprising a computer readable medium having instructions stored thereon, the instructions executable by one or more processors for:
- receiving services via a base station of the first RAT;
- receiving, via a base station of the second RAT, a paging message targeting the UE;
- and
- transmitting a Short Message Service (SMS) message using the second RAT, the SMS message containing an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the UE in the first RAT.
A method for wireless communications at a user equipment (UE) capable of communicating via first and second radio access technologies (RATs), the method comprising:
- receiving services via a base station of the first RAT;
- receiving, via a base station of the second RAT, a paging message targeting the UE;
- and
- transmitting an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the UE in the first RAT, wherein the ESR message comprises a cause code indicating cause information other than occurrence of a mobile originated (MO) or mobile terminated (MT) call.
An apparatus for wireless communications capable of communicating via first and second radio access technologies (RATs), comprising:
- means for receiving services via a base station of the first RAT;
- means for receiving, via a base station of the second RAT, a paging message targeting the apparatus;
- and
- means for transmitting an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the apparatus in the first RAT, wherein the ESR message comprises a cause code indicating cause information other than occurrence of a mobile originated (MO) or mobile terminated (MT) call.
An apparatus for wireless communications capable of communicating via first and second radio access technologies (RATs), the method comprising:
- at least one processor configured to receive services via a base station of the first RAT, receive, via a base station of the second RAT, a paging message targeting the UE, and transmit an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the UE in the first RAT, wherein the ESR message comprises a cause code indicating cause information other than occurrence of a mobile originated (MO) or mobile terminated (MT) call;
- and
- a memory coupled with the at least one processor.
A computer program product for wireless communications at a user equipment (UE) capable of communicating via first and second radio access technologies (RATs), comprising a computer readable medium having instructions stored thereon, the instructions executable by one or more processors for:
- receiving services via a base station of the first RAT;
- receiving, via a base station of the second RAT, a paging message targeting the UE;
- and
- transmitting an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the UE in the first RAT, wherein the ESR message comprises a cause code indicating cause information other than occurrence of a mobile originated (MO) or mobile terminated (MT) call.
A method for wireless communications at a user equipment (UE) capable of communicating via first and second radio access technologies (RATs), the method comprising:
- receiving services via a base station of the first RAT;
- receiving, via a base station of the second RAT, a paging message targeting the UE;
- transmitting an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the UE in the first RAT;
- and
- delaying processing the paging message while awaiting an indication the ESR message was successfully received at the first base station.
An apparatus for wireless communications capable of communicating via first and second radio access technologies (RATs), comprising:
- means for receiving services via a base station of the first RAT;
- means for receiving, via a base station of the second RAT, a paging message targeting the apparatus;
- means for transmitting an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the apparatus in the first RAT;
- and
- means for delaying processing the paging message while awaiting an indication the ESR message was successfully received at the first base station.
An apparatus for wireless communications capable of communicating via first and second radio access technologies (RATs), comprising:
- at least one processor configured to receive services via a base station of the first RAT, receive, via a base station of the second RAT, a paging message targeting the apparatus, transmit an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the apparatus in the first RAT, and process the paging message while awaiting an indication the ESR message was successfully received at the first base station;
- and
- a memory coupled with the at least one processor.
A computer program product for wireless communications at a user equipment (UE) capable of communicating via first and second radio access technologies (RATs), comprising a computer readable medium having instructions stored thereon, the instructions executable by one or more processors for:
- receiving services via a base station of the first RAT;
- receiving, via a base station of the second RAT, a paging message targeting the UE;
- transmitting an extended service request (ESR) message to the base station of the first RAT to request suspension of context for the UE in the first RAT;
- and
- delaying processing the paging message while awaiting an indication the ESR message was successfully received at the first base station.
Dependencies are inferred from the claim text.