Determination of appropriate radio resource to be requested in case of a circuit-switched (CS) fallback procedure
First Claim
1. A method, the method comprising:
- receiving, at a second network, from a wireless device, a request message for initiating establishment of an initial radio connection with the second network, wherein the request message identifies a channel type indication from a plurality of channel type indications, the channel type indication determined by the wireless device based on a particular circuit switched domain service from a plurality of circuit switched domain services, the wireless device transmits the request message in response to receiving, from a first wireless network, a paging message indicative of the particular circuit switched domain service, and the first wireless network is different than the second network, wherein the particular circuit switched domain service indicated in the paging message is in a first category of service including CS speech calls and CS services requiring a traffic channel or conversational resources, and the channel type indication identified in the request message is “
half-rate traffic channel TCH/H or full-rate traffic channel TCH/F”
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Accused Products
Abstract
A system and method for implementing fallback on a wireless device for circuit switched fallback from a first network that does not provide a circuit switched domain service is presented. A paging message is received from the first network. The paging message instructs the wireless device to implement circuit switched fallback to a circuit switched network. The paging message is inspected for information indicative of a service associated with the paging message, and a channel type suitable for the service is determined from the information indicative of the service. A request message for initiating the establishment of a radio connection is transmitted. The request message identifies the suitable channel type, and the service is used on the circuit switched network.
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Citations
36 Claims
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1. A method, the method comprising:
receiving, at a second network, from a wireless device, a request message for initiating establishment of an initial radio connection with the second network, wherein the request message identifies a channel type indication from a plurality of channel type indications, the channel type indication determined by the wireless device based on a particular circuit switched domain service from a plurality of circuit switched domain services, the wireless device transmits the request message in response to receiving, from a first wireless network, a paging message indicative of the particular circuit switched domain service, and the first wireless network is different than the second network, wherein the particular circuit switched domain service indicated in the paging message is in a first category of service including CS speech calls and CS services requiring a traffic channel or conversational resources, and the channel type indication identified in the request message is “
half-rate traffic channel TCH/H or full-rate traffic channel TCH/F”
.- View Dependent Claims (2, 3, 4, 5, 6)
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7. A method implemented, comprising:
receiving, at a second network, from a wireless device, a request message for initiating establishment of an initial radio connection with the second network, wherein the request message identifies a channel type based on a circuit switched domain service indicated by a paging message, and the wireless device transmits the request message in response to receiving, from a first wireless network, the paging message indicative of a circuit switched domain service that does not require a traffic channel or conversational resources on the second network that provides circuit-switched services. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A non-transitory computer readable medium storing instructions to cause a processor to perform operations comprising:
receiving, at a second network, from a wireless device, a request message for initiating establishment of an initial radio connection with the second network, wherein the request message identifies a channel type indication from a plurality of channel type indications, the channel type indication determined by the wireless device based on a particular circuit switched domain service from a plurality of circuit switched domain services, the wireless device transmits the request message in response to receiving, from a first wireless network, a paging message indicative of the particular circuit switched domain service, and the first wireless network is different than the second network, wherein the particular circuit switched domain service indicated in the paging message is in a first category of service including CS speech calls and CS services requiring a traffic channel or conversational resources, and the channel type indication identified in the request message is “
half-rate traffic channel TCH/H or full-rate traffic channel TCH/F”
.- View Dependent Claims (14, 15, 16, 17, 18)
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19. A non-transitory computer readable medium storing instructions to cause a processor to perform operations comprising:
receiving, at a second network, from a wireless device, a request message for initiating establishment of an initial radio connection with the second network, wherein the request message identifies a channel type based on a circuit switched domain service indicated by a paging message, and the wireless device transmits the request message in response to receiving, from a first wireless network, the paging message indicative of a circuit switched domain service that does not require a traffic channel or conversational resources on the second network that provides circuit-switched services. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A network apparatus, comprising:
a receiver configured to receive, at a second network, from a wireless device, a request message for initiating establishment of an initial radio connection with the second network, wherein the request message identifies a channel type indication from a plurality of channel type indications, the channel type indication determined by the wireless device based on a particular circuit switched domain service from a plurality of circuit switched domain services, the wireless device transmits the request message in response to receiving, from a first wireless network, a paging message indicative of the particular circuit switched domain service, and the first wireless network is different than the second network, wherein the particular circuit switched domain service indicated in the paging message is in a first category of service including CS speech calls and CS services requiring a traffic channel or conversational resources, and the channel type indication identified in the request message is “
half-rate traffic channel TCH/H or full-rate traffic channel TCH/F”
.- View Dependent Claims (26, 27, 28, 29, 30)
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31. A network apparatus, comprising:
a receiver configured to receive, at a second network, from a wireless device, a request message for initiating establishment of an initial radio connection with the second network, wherein the request message identifies a channel type based on a circuit switched domain service indicated by a paging message, and the wireless device transmits the request message in response to receiving, from a first wireless network, the paging message indicative of a circuit switched domain service that does not require a traffic channel or conversational resources on the second network that provides circuit-switched services. - View Dependent Claims (32, 33, 34, 35, 36)
Specification