METHOD AND APPARATUS FOR DUAL MODE MOBILE STATION CALL DELIVERY
First Claim
1. A method of routing a call to a dual mode mobile station when the dual mode mobile station is in at least one of a plurality of domains and the mobile station has a default domain to which a call will be routed comprising:
- delivering the call to the domain in which the mobile station has coverage when the default domain of the mobile station is compatible with the domain in which the mobile station has coverage;
failing the call in the first domain when the mobile station is in a first domain of the at least one of a plurality of domains, is registered in a second domain of the at least one of a plurality of domains and there is no coverage in the second domain; and
delivering the call to the second domain when the mobile station is not in the first domain, is registered in the second domain and there is coverage in the second domain.
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Accused Products
Abstract
A method and apparatus for routing a call to a dual mode mobile station (102) when the dual mode mobile station is in one of a plurality of domains (104, 106) is described. If the mobile station (102) is compatible with the domain (104, 106) in which the mobile station has coverage, then the call is delivered to the domain (104, 106) in which the mobile station has coverage. If the mobile station is in a first domain (102), is registered in a second domain (104) and there is no coverage in the second domain (106), then the call may fail in the first domain (104). If the mobile station is not in the first domain (104), is registered in the second domain (106) and there is coverage in the second domain (106), then the call is delivered to the second domain (106).
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Citations
20 Claims
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1. A method of routing a call to a dual mode mobile station when the dual mode mobile station is in at least one of a plurality of domains and the mobile station has a default domain to which a call will be routed comprising:
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delivering the call to the domain in which the mobile station has coverage when the default domain of the mobile station is compatible with the domain in which the mobile station has coverage;
failing the call in the first domain when the mobile station is in a first domain of the at least one of a plurality of domains, is registered in a second domain of the at least one of a plurality of domains and there is no coverage in the second domain; and
delivering the call to the second domain when the mobile station is not in the first domain, is registered in the second domain and there is coverage in the second domain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of routing a call to a dual mode mobile station wherein the dual mode mobile station is in a circuit switch domain and can be registered in a Internet Protocol network comprising:
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delivering the call via the circuit switch domain when the mobile station is attached to the circuit switch domain and is in circuit switch coverage; and
delivering the call via the Internet Protocol Network when the mobile station is registered with an Internet Protocol Multimedia Subsystem and is in the Internet Protocol network. - View Dependent Claims (10, 11, 12)
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13. A method of routing a call to a dual mode mobile station wherein the mobile station has a default domain set to the Internet Protocol Multimedia Subsystem comprising:
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delivering the call to the Internet Protocol network when the mobile station is registered with an Internet Protocol Multimedia Subsystem and has coverage in Internet Protocol network;
delivering the call to a circuit switch domain when the mobile station is registered with an Internet Protocol Multimedia Subsystem, the mobile station is in the circuit switch domain and there is no coverage Internet Protocol network, and delivering the call to a circuit switch domain when the mobile station is not registered with the Internet Protocol Multimedia Subsystem and the mobile station is in the circuit switch domain. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification