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US 10,568,013 B2Granted
Method, apparatus, and system for selecting public land mobile network
AssigneeHuawei Technologies Co., Ltd.
InventorsYijun Yu, Feng Lu
Life of this patent
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Abstract
The embodiments of the present invention relate to a method, an apparatus, and a system for selecting a public land mobile network. In an embodiment method an eNodeB acquires PLMN information about a CSFB. The eNodeB then determines a target cell of a packet switching handover according to the PLMN information about the CSFB.
Claims16
A system, comprising:
- a mobility management entity (MME);
- and
- a base station;
- wherein the MME is configured to:
- receive an extended service request message from a terminal device, wherein the extended service request message includes a circuit switched fallback (CSFB) indication indicating a CSFB;
- and
- send an S1 interface application protocol request message to the base station, wherein the S1 interface application protocol request message includes a location area identity (LAI), and the LAI includes a public land mobile network (PLMN) identity, and wherein the PLMN identity identifies a PLMN of a circuit switched (CS) domain;
- wherein the base station is configured to:
- receive the S1 interface application protocol request message from the MME;
- and
- select a target cell of a packet switched (PS) handover (HO) of the terminal device according to the PLMN identity.
8 more elements
A method, comprising:
- receiving, by a mobility management entity (MME), an extended service request message from a terminal device, wherein the extended service request message includes a circuit switched fallback (CSFB) indication indicating a CSFB;
- and
- sending, by the MME, an S1 interface application protocol request message to a base station, wherein the S1 interface application protocol request message includes a location area identity (LAI) and the LAI includes a public land mobile network (PLMN) identity identifying a PLMN of a circuit switched (CS) domain;
- wherein the PLMN identity further identifies a PLMN to which a target cell belongs for a packet switched (PS) handover (HO) of the terminal device.
1 more element
A mobility management entity (MME), comprising:
- an interface;
- a processor;
- and
- a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions to:
- receive, using the interface, an extended service request message from a terminal device, wherein the extended service request message includes a circuit switched fallback (CSFB) indication indicating a CSFB;
- and
- send, using the interface, an S1 interface application protocol request message to a base station, wherein the S1 interface application protocol request message includes a location area identity (LAI) and the LAI includes a public land mobile network (PLMN) identity identifying a PLMN of a circuit switched (CS) domain;
- wherein the PLMN identity further identifies a PLMN to which a target cell belongs for a packet switched (PS) handover (HO) of the terminal device.
5 more elements
Dependencies are inferred from the claim text.