Telephony services in mobile IP networks
First Claim
1. A method comprising:
- receiving a first request to setup a communication channel for a call from a user equipment in a first network element, said first request having an indication that the communication channel will be used for transferring a call which requires location-based services;
andselecting a second network element in accordance with said indication,wherein traffic on said communication channel is filtered according to filtering information set by said first network element or said second network element.
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 the 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 the support node to the user equipment. The activate PDP context accept message acknowledges the 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.
122 Citations
34 Claims
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1. A method comprising:
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receiving a first request to setup a communication channel for a call from a user equipment in a first network element, said first request having an indication that the communication channel will be used for transferring a call which requires location-based services; and selecting a second network element in accordance with said indication, wherein traffic on said communication channel is filtered according to filtering information set by said first network element or said second network element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 31, 32)
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17. A network element configured to carry out a method comprising:
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receiving a request to setup a communication channel from a user equipment, said request having an indication that the communication channel will be used for transferring a call which requires location-based services; and selecting another network element in accordance with said indication, wherein traffic on said communication channel is filtered according to filtering information defined according to said indication.
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18. A method comprising:
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providing location information for a first network element from a second network element in a radio access network; sending a first request to setup a call from said first network element to a third network element, said request including said location information for the first network element; and selecting an entity handling emergency calls in a packet switched network based at least in part on said location information included in said first request. - View Dependent Claims (19)
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20. A method comprising:
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providing location information for a first network element from a second network element in a radio access network; sending a first request to setup a call from said first network element to a third network element, said first request including said location information for the first network element, wherein a fourth network element indicates to the radio access network to start a positioning method in order to get a location estimate in response to receiving a second request from said first network element. - View Dependent Claims (21, 22, 23, 24)
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25. A system comprising:
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a user equipment (UE); a radio access network (RAN); a first network element in the radio access network, said first network element providing location information for said user equipment; and a second network element in a packet switched network, said second network element receiving a request from the user equipment to set up a call to said first network element, the request including said location information for the user equipment. - View Dependent Claims (26, 27, 28, 29, 30)
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33. An apparatus configured to:
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receive a request to setup a communication channel from a user equipment and a network element, said request having an indication that the communication channel will be used for transferring a call which requires location-based services, said apparatus being chosen to receive said request in accordance with said indication; and filter traffic on said communication channel according to filtering information defined according to said indication. - View Dependent Claims (34)
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Specification