REALIZING METHOD OF EMERGENCY CALL REGISTRATION
First Claim
1. A realizing method of emergency registration, wherein when a User Equipment roaming in a visited network initiates an emergency registration request, the method comprises the following steps of:
- A;
after receiving an emergency registration request message from the User Equipment, a Proxy Call Session Control Function of the visited network setting an emergency registration expiration time in the message, and sending the message to Serving Call Session Control Function of a home network of the User Equipment;
B;
said Serving Call Session Control Function obtaining said emergency registration expiration time from the emergency registration request message, and sending an emergency registration response message including said emergency registration expiration time to said Proxy Call Session Control Function;
C;
said Proxy Call Session Control Function sending said emergency registration response message to the User Equipment; and
the User Equipment obtaining said emergency registration expiration time from said emergency registration response message.
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Abstract
A realizing method of emergency registration is disclosed. When the user equipment in the visited network initiates an emergency registration request, the method comprises the following steps: after P-CSCF of the visited network receives the emergency registration request sent from the user equipment, it forwards the message to S-CSCF of the home network. The S-CSCF sets the emergency registration expiration time according to the setting policy for emergency registration expiration time, includes it into the emergency registration response sent to the P-CSCF which retrieves the emergency registration expiration time from the emergency registration response and sends the message to the user equipment, which in turn retrieves the emergency registration expiration time from the emergency registration response. The factors of the setting policy for the emergency registration expiration time comprise: a type of the emergency call, the location information of the visited network and the location information of the user equipment.
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Citations
19 Claims
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1. A realizing method of emergency registration, wherein when a User Equipment roaming in a visited network initiates an emergency registration request, the method comprises the following steps of:
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A;
after receiving an emergency registration request message from the User Equipment, a Proxy Call Session Control Function of the visited network setting an emergency registration expiration time in the message, and sending the message to Serving Call Session Control Function of a home network of the User Equipment;B;
said Serving Call Session Control Function obtaining said emergency registration expiration time from the emergency registration request message, and sending an emergency registration response message including said emergency registration expiration time to said Proxy Call Session Control Function;C;
said Proxy Call Session Control Function sending said emergency registration response message to the User Equipment; and
the User Equipment obtaining said emergency registration expiration time from said emergency registration response message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 19)
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12. A realizing method of the emergency registration, wherein when a User Equipment roaming in a visited network initiates an emergency registration request, the method comprises the following steps of:
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a) after receiving an emergency registration request message from the User Equipment, Proxy Call Session Control Function of the visited network sending the message to Serving Call Session Control Function of a home network of the User Equipment; b) said Serving Call Session Control Function setting an emergency registration expiration time according to an emergency registration expiration time setting policy saved therein, including the emergency registration expiration time into an emergency registration response message to send to said Proxy Call Session Control Function; c) said Proxy Call Session Control Function obtaining said emergency registration expiration time included in said emergency registration request message and sending said emergency registration request message to the User Equipment;
said User Equipment obtaining said emergency registration expiration time from said emergency registration response message;wherein said emergency registration expiration time setting policy of the visited network includes the following factors;
a type of an emergency call, location information of the visited network and location information of a user. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification