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System and method for handling sessions of specific type in communication networks

  • US 8,103,243 B2
  • Filed: 10/19/2009
  • Issued: 01/24/2012
  • Est. Priority Date: 05/06/2002
  • Status: Expired due to Term
First Claim
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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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