Abstract
A method and apparatus for controlling inter-PLMN handover based on CSG lists of equivalent PLMNs is provided. A method for receiving subscriber information of a terminal at a Mobility Management Entity (MME) includes transmitting an update location request message for the terminal to a Home Subscriber Server (HSS), and receiving an update location acknowledgement message with the subscriber information of the terminal from the HSS, wherein the update location request message comprises a list of equivalent Public Land Mobile Networks (PLMNs) among which the MME supports inter-PLMN handover of the terminal. The method and apparatus for controlling inter-plan handover to a CSG cell according to the present invention is characterized in that a control apparatus of a core network acquires the allowed CSG lists for determining a User Equipments (UEs) capability of access to a CSG cell and determines whether to permit inter-PLMN handover based on the allowed CSG lists.
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4G | 21/01/2013 | ISLD-201301-009 | SAMSUNG | No | Family Member | ||||
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4G | 09/05/2019 | ISLD-201905-013 | SAMSUNG |
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5G | 30/03/2020 | ISLD-202003-045 | SAMSUNG |
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Specification Information
Specification Information
Technologies
Family Information
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Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Product
Mobility Management Entity (MME)
Use Cases
Services
Claim
1. A method by a mobility management entity (MME) in a communication system, the method comprising:
receiving, from a terminal, an attach request message or a track area update request message; transmitting, to a home subscriber server (HSS), an update location request message associated with the terminal, the update location request message including an equivalent public land mobile network (PLMN) list when the MME supports an inter-PLMN handover to an equivalent PLMN of the equivalent PLMN list; receiving, from the HSS, an updated location acknowledgement (ACK) message including subscription information associated with the terminal, the subscription information including a closed subscriber group (CSG) subscription information for the equivalent PLMN list; receiving, from a source base station associated with the terminal, a handover required message including information on a PLMN of a target cell and information CSG ID of the target cell; and validating a CSG membership of the terminal in the target cell based on the CSG cell identity (ID) of the target cell and the CSG subscription information for the equivalent PLMN list.
2. The method of claim 1, wherein a handover to the target cell is rejected when information on CSG membership corresponding to PLMN of the target cell is not included in the CSG subscription information for the equivalent PLMN list.
3. The method of claim 1, wherein the CSG subscription information for the equivalent PLMN list includes at least one CSG ID corresponding to the equivalent PLMN list.
4. The method of claim 1, wherein the equivalent PLMN list is a list of PLMNs considered as equivalent by a terminal for handover.
5. The method of claim 1, wherein the subscription information associated with the terminal further includes CSG subscription information for a registered PLMN.
6. A method by a terminal in a communication system, the method comprising:
transmitting, to a mobility management entity (MME), an attach request message or a track area update request message; and receiving, from the MME, a message related to a handover, wherein an update location request message associated with the terminal is transmitted from MME to a home subscriber server (HSS), the update location request message including an equivalent public land mobile network (PLMN) list when the MME supports an inter-PLMN handover to an equivalent PLMN of the equivalent PLMN list, wherein an updated location acknowledgement (ACK) message including subscription information associated with the terminal is transmitted from the HSS to the MME, the subscription information including a closed subscriber group (CSG) subscription information for the equivalent PLMN list, wherein a handover required message related to the handover is transmitted from a source base station associated with the terminal to the MME, the handover required message including information on a PLMN of a target cell and information CSG identity (ID) of the target cell, and wherein a CSG membership of the terminal in the target cell is validated based on the CSG cell identity (ID) of the target cell and the CSG subscription information for the equivalent PLMN list.
7. The method of claim 6, wherein the handover to the target cell is rejected when information on CSG membership corresponding to PLMN of the target cell is not included in the CSG subscription information for the equivalent PLMN list.
8. The method of claim 6, wherein the CSG subscription information for the equivalent PLMN list includes at least one CSG ID corresponding to the equivalent PLMN list.
9. The method of claim 6, wherein the equivalent PLMN list is a list of PLMNs considered as equivalent by a terminal for handover.
10. The method of claim 6, wherein the subscription information associated with the terminal further includes CSG subscription information for a registered PLMN.
11. A method by a base station in a communication system, the method comprising:
transmitting, to a mobility management entity (MME), an attach request message or a track area update request message associated with a terminal; and transmitting, to the MME, a handover required message including information on a public land mobile network (PLMN) of a target cell and information CSG ID of the target cell, wherein an update location request message associated with the terminal is transmitted from the MME to a home subscriber server (HSS), the update location request message including an equivalent public land mobile network (PLMN) list when the MME supports an inter-PLMN handover to an equivalent PLMN of the equivalent PLMN list, wherein an updated location acknowledgement (ACK) message including subscription information associated with the terminal is transmitted from the HSS to the MME, the subscription information including a closed subscriber group (CSG) subscription information for the equivalent PLMN list, and wherein a CSG membership of the terminal in the target cell is validated based on the CSG cell identity (ID) of the target cell and the CSG subscription information for the equivalent PLMN list.
12. The method of claim 11, wherein a handover to the target cell is rejected when information on CSG membership corresponding to PLMN of the target cell is not included in the CSG subscription information for the equivalent PLMN list.
13. The method of claim 11, wherein the CSG subscription information for the equivalent PLMN list includes at least one CSG ID corresponding to the equivalent PLMN list.
14. The method of claim 11, wherein the equivalent PLMN list is a list of PLMNs considered as equivalent by a terminal for handover.
15. The method of claim 11, wherein the subscription information associated with the terminal further includes CSG subscription information for a registered PLMN.
16. A mobility management entity (MME) in a communication system, the MME comprising:
a transceiver; a controller coupled with the transceiver and configured to control to: receive, from a terminal, an attach request message or a track area update request message, transmit, to a home subscriber server (HSS), an update location request message associated with the terminal, the update location request message including an equivalent public land mobile network (PLMN) list when the MME supports an inter-PLMN handover to an equivalent PLMN of the equivalent PLMN list, receive, from the HSS, an updated location acknowledgement (ACK) message including subscription information associated with the terminal, the subscription information including a closed subscriber group (CSG) subscription information for the equivalent PLMN list, receive, from a source base station associated with the terminal, a handover required message including information on a PLMN of a target cell and information CSG ID of the target cell, and validate a CSG membership of the terminal in the target cell based on the CSG cell identity (ID) of the target cell and the CSG subscription information for the equivalent PLMN list.
17. The MME of claim 16, wherein a handover to the target cell is rejected when information on CSG membership corresponding to PLMN of the target cell is not included in the CSG subscription information for the equivalent PLMN list.
18. The MME of claim 16, wherein the CSG subscription information for the equivalent PLMN list includes at least one CSG ID corresponding to the equivalent PLMN list.
19. The MME of claim 16, wherein the equivalent PLMN list is a list of PLMNs considered as equivalent by a terminal for handover.
20. The MME of claim 16, wherein the subscription information associated with the terminal further includes CSG subscription information for a registered PLMN.
21. A terminal in a communication system, the terminal comprising:
a transceiver; a controller coupled with the transceiver and configured to control to: transmit, to a mobility management entity (MME), an attach request message or a track area update request message, and receive, from the MME, a message related to a handover, wherein an update location request message associated with the terminal is transmitted from MME to a home subscriber server (HSS), the update location request message including an equivalent public land mobile network (PLMN) list when the MME supports an inter-PLMN handover to an equivalent PLMN of the equivalent PLMN list, wherein an updated location acknowledgement (ACK) message including subscription information associated with the terminal is transmitted from the HSS to the MME, the subscription information including a closed subscriber group (CSG) subscription information for the equivalent PLMN list, wherein a handover required message related to the handover is transmitted from a source base station associated with the terminal to the MME, the handover required message including information on a PLMN of a target cell and information CSG identity (ID) of the target cell, and wherein a CSG membership of the terminal in the target cell is validated based on the CSG cell identity (ID) of the target cell and the CSG subscription information for the equivalent PLMN list.
22. The terminal of claim 21, wherein the handover to the target cell is rejected when information on CSG membership corresponding to PLMN of the target cell is not included in the CSG subscription information for the equivalent PLMN list.
23. The terminal of claim 21, wherein the CSG subscription information for the equivalent PLMN list includes at least one CSG ID corresponding to the equivalent PLMN list.
24. The terminal of claim 21, wherein the equivalent PLMN list is a list of PLMNs considered as equivalent by a terminal for handover.
25. The terminal of claim 21, wherein the subscription information associated with the terminal further includes CSG subscription information for a registered PLMN.
26. A base station in a communication system, the base station comprising:
a transceiver; a controller coupled with the transceiver and configured to control to: transmit, to a mobility management entity (MME), an attach request message or a track area update request message associated with a terminal, and transmit, to the MME, a handover required message including information on a public land mobile network (PLMN) of a target cell and information CSG ID of the target cell, wherein an update location request message associated with the terminal is transmitted from the MME to a home subscriber server (HSS), the update location request message including an equivalent public land mobile network (PLMN) list when the MME supports an inter-PLMN handover to an equivalent PLMN of the equivalent PLMN list, wherein an updated location acknowledgement (ACK) message including subscription information associated with the terminal is transmitted from the HSS to the MME, the subscription information including a closed subscriber group (CSG) subscription information for the equivalent PLMN list, and wherein a CSG membership of the terminal in the target cell is validated based on the CSG cell identity (ID) of the target cell and the CSG subscription information for the equivalent PLMN list.
27. The base station of claim 26, wherein a handover to the target cell is rejected when information on CSG membership corresponding to PLMN of the target cell is not included in the CSG subscription information for the equivalent PLMN list.
28. The base station of claim 26, wherein the CSG subscription information for the equivalent PLMN list includes at least one CSG ID corresponding to the equivalent PLMN list.
29. The base station of claim 26, wherein the equivalent PLMN list is a list of PLMNs considered as equivalent by a terminal for handover.
30. The base station of claim 26, wherein the subscription information associated with the terminal further includes CSG subscription information for a registered PLMN.
Associated Portfolios
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.