System and method for handling sessions of specific type in communication networks
First Claim
1. A method, comprising:
- initiating a session setup procedure by sending a session setup request from a user equipment to a network entity for establishing a session of a specific type to a called entity in at least one of a packet switched network and an internet protocol multimedia subsystem (IMS) network, wherein the session setup request includes location information for the user equipment and an identifier for identifying the called entity;
receiving, by the user equipment, a message from the network entity, where the message is configured to inform the user equipment that the identifier is an identifier for initiating an emergency session; and
after receipt of the message and in response to termination of the session setup procedure in the at least one of a packet switched network and an IMS network, establishing, by the user equipment, a session of the specific type using a circuit switched domain.
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Abstract
The invention provides a method and system for handling a session setup procedure initiated by an user equipment for establishing a session of a specific type to a called entity, wherein a session setup request sent to a network entity for establishing the requested session, includes location information and an identifier for identifying the called entity. A database is provided which stores a list of location information and associated identifiers. The network entity accesses this database, wherein, when detecting that the identifier represents a session of the specific type in an area represented by the location information, the session set-up is continued in a manner appropriate for a session of the specific type.
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Citations
20 Claims
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1. A method, comprising:
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initiating a session setup procedure by sending a session setup request from a user equipment to a network entity for establishing a session of a specific type to a called entity in at least one of a packet switched network and an internet protocol multimedia subsystem (IMS) network, wherein the session setup request includes location information for the user equipment and an identifier for identifying the called entity; receiving, by the user equipment, a message from the network entity, where the message is configured to inform the user equipment that the identifier is an identifier for initiating an emergency session; and after receipt of the message and in response to termination of the session setup procedure in the at least one of a packet switched network and an IMS network, establishing, by the user equipment, a session of the specific type using a circuit switched domain. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus, comprising:
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a memory; and a processor configured to cause the apparatus to; initiate a session setup procedure by sending a session setup request to a network entity for establishing a session of a specific type to a called entity in at least one of a packet switched network and an internet protocol multimedia subsystem (IMS) network, wherein the session setup request includes location information for the apparatus and an identifier for identifying the called entity, receive a message from the network entity, where the message is configured to inform the apparatus that the identifier is an identifier for initiating an emergency session, and after receipt of the message and in response to termination of the session setup procedure in the at least one of a packet switched network and an IMS network, establish a session of the specific type using a circuit switched domain. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. An apparatus, comprising:
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means for initiating a session setup procedure by sending a session setup request to a network entity for establishing a session of a specific type to a called entity in at least one of a packet switched network and an internet protocol multimedia subsystem (IMS) network, wherein the session setup request includes location information for the apparatus and an identifier for identifying the called entity; means for receiving a message from the network entity, where the message is configured to inform the apparatus that the identifier is an identifier for initiating an emergency session; and means for establishing, after receipt of the message and in response to termination of the session setup procedure in the at least one of a packet switched network and an IMS network, a session of the specific type using a circuit switched domain.
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17. A method, comprising:
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initiating a session setup procedure by sending a session setup request from a user equipment to a network entity for establishing a session of a specific type to a called entity in at least one of a packet switched network and an internet protocol multimedia subsystem (IMS) network, wherein the session setup request includes location information for the user equipment and an identifier for identifying the called entity; receiving, by the user equipment, a message from the network entity, where the message is configured to inform the user equipment that the identifier is an identifier for initiating an emergency session; and after receipt of the message and in response to not forwarding the session setup request for further handling in IMS network, establishing, by the user equipment, a session of the specific type using a circuit switched domain. - View Dependent Claims (18)
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19. An apparatus, comprising:
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means for initiating a session setup procedure by sending a session setup request to a network entity for establishing a session of a specific type to a called entity in at least one of a packet switched network and an internet protocol multimedia subsystem (IMS) network, wherein the session setup request includes location information for the apparatus and an identifier for identifying the called entity; means for receiving a message from the network entity, where the message is configured to inform the apparatus that the identifier is an identifier for initiating an emergency session; and means for establishing, after receipt of the message and in response to not forwarding the session setup request for further handling in IMS network and an IMS session initiation protocol error message.
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20. An apparatus, comprising:
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a memory; and a processor configured to cause the apparatus to; initiate a session setup procedure by sending a session setup request to a network entity for establishing a session of a specific type to a called entity in at least one of a packet switched network and an interne protocol multimedia subsystem (IMS) network, wherein the session setup request includes location information for the apparatus and an identifier for identifying the called entity, receive a message from the network entity, where the message is configured to inform the apparatus that the identifier is an identifier for initiating an emergency session, and after receipt of the message and in response to not forwarding the session setup request for further handling in IMS network, establish a session of the specific type using a circuit switched domain.
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Specification