Method and system for enabling emergency sessions to be established in abnormal cases
First Claim
1. A method, comprising:
- preventing barring of bearer establishment for an emergency session in a wireless communication system;
receiving, when an emergency session is to be set up for a user equipment, an attach request or packet data protocol context activation request from the user equipment, the attach request or packet data protocol context activation request including an indication indicating that the session to be established is an emergency session;
receiving said indication in a first network element, said first network element authorizing, or being controlled to authorize, bearer establishment in response to said indication;
establishing a session after receiving attach request or packet data protocol context activation request comprising the indication indicating that the session to be established is an emergency session;
checking that the established session established after the attach request or packet data protocol context activation request, is indeed an emergency session; and
when the checking indicates that the session established after the attach request or packet data protocol context activation request is no emergency session, forcibly terminating the established session.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a method and system for connecting a user equipment to a network in abnormal situations normally not allowing the network element to conduct a call. For establishing an emergency session, the network element is adapted to send an indication to the network, the network, when receiving the indication, accepting the call request and establishing the connection for conducting the emergency session.
As an alternative, the network, when receiving the indication, may reject the session request whereupon the user equipment initiates an Anonymous Access PDP Activation procedure with the network. To save time, the network, when receiving the indication, may directly return an Anonymous Access PDP Activation Request message to the user equipment for initiating the Anonymous Access PDP Activation procedure. The network, when receiving the session request including the called number, may be adapted to analyze the called number and, when detecting that the called number is an emergency number, to accept the call request and establish the connection for conducting the emergency session.
7 Citations
46 Claims
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1. A method, comprising:
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preventing barring of bearer establishment for an emergency session in a wireless communication system; receiving, when an emergency session is to be set up for a user equipment, an attach request or packet data protocol context activation request from the user equipment, the attach request or packet data protocol context activation request including an indication indicating that the session to be established is an emergency session; receiving said indication in a first network element, said first network element authorizing, or being controlled to authorize, bearer establishment in response to said indication; establishing a session after receiving attach request or packet data protocol context activation request comprising the indication indicating that the session to be established is an emergency session; checking that the established session established after the attach request or packet data protocol context activation request, is indeed an emergency session; and when the checking indicates that the session established after the attach request or packet data protocol context activation request is no emergency session, forcibly terminating the established session. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. System, comprising:
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first network element authorizing bearer establishment, wherein the system is configured to receive, when an emergency session is to be set up for a user equipment associated with a subscriber, an attach request or racket data protocol context activation request from the user equipment, the attach request or packet data protocol context activation request including an indication indicating that the session to be established is an emergency session; the first network element being configured, to receive said indication and to authorize bearer establishment in response to said indication, wherein the system is configured to establish a session after receiving the attach request or packet data protocol context activation request including the indication indicating that the session to be established is an emergency session, check that the established session, established after the attach request or racket data protocol context activation request, is indeed an emergency session, and forcibly terminate the established session when the check indicates that the session established after the attach request or packet data protocol context activation request is no emergency session. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. An apparatus, comprising:
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a receiver configured to receive an attach request or packet data protocol context activation request from a user equipment, the attach request or packet data protocol context activation request including an indication indicating that the session to be established is an emergency session; a processor configured to authorize, or to be controlled to authorize, bearer establishment in response to said indication, wherein the processor is configured to establish a session after receiving the attach request or packet data protocol context activation request including the indication indicating that the session to be established is an emergency session, check that the established session, established after the attach request or packet data protocol context activation request, is indeed an emergency session, and forcibly terminate the established session when the check indicates that the session established after the attach request or packet data protocol context activation request is no emergency session. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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32. An apparatus, comprising:
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preventing means for preventing barring of bearer establishment for an emergency session in a wireless communication system, the apparatus comprising a first network element configured to authorize, or to be controlled to authorize bearer establishment; receiving means for receiving, when an emergency session is to be set up for a user equipment associated with a subscriber, an attach request or packet data protocol context activation request from the user equipment, the attach request or packet data protocol context activation request including an indication indicating that the session to be established is an emergency session; receiving means for receiving said indication in said first network element, said first network element authorizing, or being controlled to authorize, bearer establishment in response to said indication; establishing means for establishing a session after receiving the attach request or packet data protocol context activation request including the indication indicating that the session to be established is an emergency session; checking means for checking that the established session established after the attach request or packet data protocol context activation request, is indeed an emergency session; and terminating means for forcibly terminating, when the checking indicates that the session established after the attach request or packet data protocol context activation request is no emergency session, the established session.
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Specification