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 | 11/05/2017 | ISLD-201704-012 | SAMSUNG | Yes | Basis Patent | ||||
4G | 09/05/2019 | ISLD-201905-013 | SAMSUNG |
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5G | 30/03/2020 | ISLD-202003-045 | SAMSUNG |
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No | Family Member |
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Technologies
Product
Use Cases
Services
Claim
1. A method by a terminal in a communication system, the method comprising:
transmitting, to a base station of a first public land mobile network (PLMN), a measurement report; and
receiving, from the base station, a handover command related to a target cell of a second PLMN,
wherein a closed subscriber group (CSG) identity (ID) list for an equivalent PLMN list is transmitted from a home subscriber server (HSS) to the MME,
wherein a CSG cell ID related to the target cell is transmitted from the base station to a mobility management entity (MME), and
wherein a CSG membership of the terminal in the target cell is validated by the MME based on the CSG cell ID of the target cell and the CSG ID list for the equivalent PLMN list.
2. The method of claim 1, wherein the equivalent PLMN list is transmitted from the MME to the HSS if the MME supports inter-PLMN handover to a CSG cell in the equivalent PLMN list.
3. The method of claim 1, wherein the handover command indicates inter-PLMN handover to the target cell.
4. The method of claim 1, wherein the handover is rejected if the handover is not permitted based on the CSG ID list for the equivalent PLMN list.
5. The method of claim 1, wherein the equivalent PLMN list is a list of PLMNs considered as equivalent by the terminal for one of cell selection, cell reselection, and handover.
6. A method by a base station in a communication system, the method comprising:
receiving, by a base station of a first public land mobile network (PLMN), a measurement report from a terminal;
transmitting, to a mobility management entity (MME), a closed subscriber group (CSG) cell identity (ID) related to a target cell of a second PLMN; and
transmitting, to the terminal, a handover command related to the target cell,
wherein a CSG ID list for an equivalent PLMN list is transmitted from a home subscriber server (HSS) to the MME, and
wherein a CSG membership of the terminal in the target cell is validated based on the CSG cell ID of the target cell and the CSG ID list for the equivalent PLMN list.
7. The method of claim 6, wherein the equivalent PLMN list is transmitted from the MME to the HSS if the MME supports inter-PLMN handover to a CSG cell in the equivalent PLMN list.
8. The method of claim 6, wherein the handover command indicates inter-PLMN handover to the target cell.
9. The method of claim 6, wherein the handover is rejected if the handover is not permitted based on the CSG ID list for the equivalent PLMN list.
10. The method of claim 6, wherein the equivalent PLMN list is a list of PLMNs considered as equivalent by the terminal for one of cell selection, cell reselection, and handover.
11. A terminal in a communication system, the terminal comprising:
a transceiver configured to transmit and receive at least one signal; and
a controller coupled with the transceiver and configured to:
transmit, to a base station of a first public land mobile network (PLMN), a measurement report, and
receive, from the base station, a handover command related to a target cell of a second PLMN,
wherein a closed subscriber group (CSG) identity (ID) list for an equivalent PLMN list is transmitted from a home subscriber server (HSS) to the MME,
wherein a CSG cell ID related to the target cell is transmitted from the base station to a mobility management entity (MME), and
wherein a CSG membership of the terminal in the target cell is validated by the MME based on the CSG cell ID of the target cell and the CSG ID list for the equivalent PLMN list.
12. The terminal of claim 11, wherein the equivalent PLMN list is transmitted from the MME to the HSS if the MME supports inter-PLMN handover to a CSG cell in the equivalent PLMN list.
13. The terminal of claim 11, wherein the handover command indicates inter-PLMN handover to the target cell.
14. The terminal of claim 11, wherein the handover is rejected if the handover is not permitted based on the CSG ID list for the equivalent PLMN list.
15. The terminal of claim 11, wherein the equivalent PLMN list is a list of PLMNs considered as equivalent by the terminal for one of cell selection, cell reselection, and handover.
16. A base station in a communication system, the base station comprising:
a transceiver configured to transmit and receive at least one signal; and
a controller coupled with the transceiver and configured to:
receive, by a base station of a first public land mobile network (PLMN), a measurement report from a terminal,
transmit, to a mobility management entity (MME), a closed subscriber group (CSG) cell identity (ID) related to a target cell of a second PLMN, and
transmit, to the terminal, a handover command related to the target cell,
wherein a CSG ID list for an equivalent PLMN list is transmitted from a home subscriber server (HSS) to the MME, and
wherein a CSG membership of the terminal in the target cell is validated based on the CSG cell ID of the target cell and the CSG ID list for the equivalent PLMN list.
17. The base station of claim 16, wherein the equivalent PLMN list is transmitted from the MME to the HSS if the MME supports inter-PLMN handover to a CSG cell in the equivalent PLMN list.
18. The base station of claim 16, wherein the handover command indicates inter-PLMN handover to the target cell.
19. The base station of claim 16, wherein the handover is rejected if the handover is not permitted based on the CSG ID list for the equivalent PLMN list.
20. The base station of claim 16, wherein the equivalent PLMN list is a list of PLMNs considered as equivalent by the terminal for one of cell selection, cell reselection, and handover.
21. A method by a mobility management entity (MME) in a communication system, the method comprising:
transmitting, to a home subscriber server (HSS), a request message;
receiving, from the HSS, a closed subscriber group (CSG) identity (ID) list for an equivalent PLMN list in response to the request message;
receiving, from a base station of a first public land mobile network (PLMN), a CSG cell ID related to a target cell of a second PLMN for a terminal;
validating a CSG membership of the terminal in the target cell based on the CSG cell ID of the target cell and the CSG ID list for the equivalent PLMN list; and
transmitting, to the base station, a handover command related to the target cell based on a result of the validation.
22. The method of claim 21, wherein the request message comprises the equivalent PLMN list if the MME supports inter-PLMN handover to a CSG cell in the equivalent PLMN list.
23. The method of claim 21, wherein the handover command indicates inter-PLMN handover to the target cell.
24. The method of claim 21, wherein the handover is rejected if the handover is not permitted based on the CSG ID list for the equivalent PLMN list.
25. The method of claim 21, wherein the equivalent PLMN list is a list of PLMNs considered as equivalent by the terminal for one of cell selection, cell reselection, and handover.
26. A mobility management entity (MME) in a communication system, the MME comprising:
a transceiver configured to transmit and receive at least one signal; and
a controller coupled with the transceiver and configured to:
transmit, to a home subscriber server (HSS), a request message,
receive, from the HSS, a closed subscriber group (CSG) identity (ID) list for an equivalent PLMN list in response to the request message,
receive, from a base station of a first public land mobile network (PLMN), a CSG cell ID related to a target cell of a second PLMN for a terminal,
validate a CSG membership of the terminal in the target cell based on the CSG cell ID of the target cell and the CSG ID list for the equivalent PLMN list, and
transmit, to the base station, a handover command related to the target cell based on a result of the validation.
27. The MME of claim 26, wherein the request message comprises the equivalent PLMN list if the MME supports inter-PLMN handover to a CSG cell in the equivalent PLMN list.
28. The MME of claim 26, wherein the handover command indicates inter-PLMN handover to the target cell.
29. The MME of claim 26, wherein the handover is rejected if the handover is not permitted based on the CSG ID list for the equivalent PLMN list.
30. The MME of claim 26, wherein the equivalent PLMN list is a list of PLMNs considered as equivalent by the terminal for one of cell selection, cell reselection, and handover.
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.