Method and apparatus for maintaining location continuity for a UE following handover
First Claim
1. A method of receiving location services, the method comprising:
- communicating, by a user equipment (UE), with a first radio access network (RAN) prior to a handover;
receiving, by the UE via the first RAN prior to the handover, information for the location services from a source location server;
communicating, by the UE with a second RAN after the handover; and
receiving, by the UE via the second RAN after the handover, information for the location services from a target location server, the target location server being different from the source location server.
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Accused Products
Abstract
Techniques for maintaining location continuity for a user equipment (UE) following handover are described. The UE communicates with a first radio access network (RAN) and is served by a source serving node and a source location server prior to handover. The UE communicates with a second RAN and is served by a target serving node and a target location server after the handover. In an aspect, location continuity may be maintained for the UE by transferring an identity of the target serving node to a location server during handover of the UE. In one design, the target serving node sends its identity to the target location server, which updates a Location and Routing Function (LRF) serving the UE. In another design, for handover from packet-switched domain to circuit-switched domain, the source serving node sends the target serving node identity to the source location server, which updates the LRF.
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Citations
34 Claims
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1. A method of receiving location services, the method comprising:
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communicating, by a user equipment (UE), with a first radio access network (RAN) prior to a handover; receiving, by the UE via the first RAN prior to the handover, information for the location services from a source location server; communicating, by the UE with a second RAN after the handover; and receiving, by the UE via the second RAN after the handover, information for the location services from a target location server, the target location server being different from the source location server. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for receiving location services, the apparatus comprising:
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memory; at least one processor coupled to the memory; and a transceiver configured to; communicate with a first radio access network (RAN) prior to a handover; receive, via the first RAN prior to the handover, information for the location services from a source location server; communicate, with a second RAN after the handover; and receive, via the second RAN after the handover, information for the location services from a target location server, the target location server being different from the source location server. - View Dependent Claims (7, 8, 9, 10)
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11. An apparatus for receiving location services, the apparatus comprising:
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means for communicating with a first radio access network (RAN) prior to a handover; means for receiving, via the first RAN prior to the handover, information for the location services from a source location server; means for communicating with a second RAN after the handover; and means for receiving, via the second RAN after the handover, information for the location services from a target location server, the target location server being different from the source location server. - View Dependent Claims (12, 13, 14)
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15. A non-transitory processor-readable medium, having stored thereon processor-readable instructions configured to cause a processor to:
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communicate with a first radio access network (RAN) prior to a handover; receive, via the first RAN prior to the handover, information for location services from a source location server; communicate, with a second RAN after the handover; and receive, via the second RAN after the handover, information for the location services from a target location server, the target location server being different from the source location server.
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16. A method of supporting location services for a user equipment (UE) after handover, the method comprising:
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supporting communications for the UE prior to a handover; receiving, by a location and routing function (LRF), an identity of a target serving node; determining, by the LRF based at least in part on the identity of the target serving node, a target location server for supporting the location services for the UE after the handover; and updating information at the LRF to replace a source location server for supporting the location services for the UE prior to the handover with the target location server for supporting the location services for the UE after the handover, the target location server being different from the source location server. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A location and routing function (LRF) for supporting location services for a user equipment (UE), the LRF comprising:
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memory; a communications unit configured to; support communications for the UE prior to a handover; receive an identity of a target serving node; and at least one processor coupled to the memory and configured to; determine, based at least in part on the identity of the target serving node, a target location server for supporting the location services for the UE after the handover; and update information at the LRF to replace a source location server for supporting the location services for the UE prior to the handover with the target location server for supporting the location services for the UE after the handover, the target location server being different from the source location server. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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33. A location and routing function (LRF) for supporting location services for a user equipment (UE), the LRF comprising:
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means for supporting communications for the UE prior to a handover; means for receiving, by the location and routing function (LRF), an identity of a target serving node; means for determining, by the LRF based at least in part on the identity of the target serving node, a target location server for supporting the location services for the UE after the handover; and means for updating information at the LRF to replace a source location server for supporting the location services for the UE prior to the handover with the target location server for supporting the location services for the UE after the handover, the target location server being different from the source location server.
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34. A non-transitory processor-readable medium, having stored thereon processor-readable instructions configured to cause a processor to:
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support communications for the UE prior to a handover; receive, by a location and routing function (LRF), an identity of a target serving node; determine, by the LRF based at least in part on the identity of the target serving node, a target location server for supporting the location services for the UE after the handover; and update information at the LRF to replace a source location server for supporting the location services for the UE prior to the handover with the target location server for supporting the location services for the UE after the handover, the target location server being different from the source location server.
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Specification