Telephony services in mobile IP networks
First Claim
1. A method comprising:
- receiving location information for a first network element from a second network element in a radio access network;
sending a request to setup an emergency call from the first network element to a third network element, said request to setup the emergency call including the location information for the first network element;
sending, from the first network element, a second request to activate a communication connection to a fourth network element in the network, the second request including an indication that the communication connection is for an emergency call; and
allocating, at the fourth network element, a temporary identity which is used to identify the emergency call and sending from the fourth network element the temporary identity which is used to identify the emergency call to an entity maintaining location information.
6 Assignments
0 Petitions
Accused Products
Abstract
An emergency telephone call is supported and routed to a Public Safety Answering Point (PSAP) in an IP based packet switched wireless communications network. An activate PDP context request is sent from a user equipment to the network. A parameter in said activate PDP context request indicates that the PDP context will be used to transfer an emergency call. An activate PDP context accept message is returned from said support node to said user equipment. Said activate PDP context accept message acknowledges said activate PDP context request message and provides the address of a call state control function. A call setup request transferred to the call state control function includes the Service Area Identity (SAI). The call state control function selects a PSAP based, at least in part, on the SAI included in the call setup request and forwards the emergency call to the selected PSAP.
-
Citations
11 Claims
-
1. A method comprising:
-
receiving location information for a first network element from a second network element in a radio access network; sending a request to setup an emergency call from the first network element to a third network element, said request to setup the emergency call including the location information for the first network element; sending, from the first network element, a second request to activate a communication connection to a fourth network element in the network, the second request including an indication that the communication connection is for an emergency call; and allocating, at the fourth network element, a temporary identity which is used to identify the emergency call and sending from the fourth network element the temporary identity which is used to identify the emergency call to an entity maintaining location information. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method comprising:
-
receiving location information for a first network element from a second network element in a radio access network; sending a request to setup an emergency call from the first network element to a third network element, said request to setup the emergency call including the location information for the first network element; and requesting, by the first network element, that a positioning method be started at a same time the request to set up the emergency call is sent, and wherein the first network element is a user equipment, the location information being service area identification, routing area identity, cell identifier, coordinate information, or any combination of these.
-
-
8. A method comprising:
-
receiving a communication connection request from a user equipment, the request including an indication that the communication connection is for an emergency call; allocating, by an apparatus, a temporary identity which is used to identify the emergency call; sending the temporary identity which is used to identify the emergency call to an entity maintaining location information; and sending the temporary identity which is used to identify the emergency call to the user equipment to be further transmitted to an entity handling emergency calls. - View Dependent Claims (9)
-
-
10. An apparatus comprising:
-
equipment configured to communicate via a communications network, the apparatus being configured at least to perform; receiving a communication connection request from a user equipment, the request including an indication that the communication connection is for an emergency call; allocating a temporary identity which is used to identify the emergency call; sending the temporary identity which is used to identify the emergency call to an entity maintaining location information; and sending the temporary identity which is used to identify the emergency call to the user equipment to be further transmitted to an entity handling emergency calls. - View Dependent Claims (11)
-
Specification