CN105338614A

CN105338614A - Network registration method and device

Info

Publication number: CN105338614A
Application number: CN201410386999.8A
Authority: CN
Inventors: 段小嫣; 金辉; 衣强; 党淑君; 欧阳国威
Original assignee: Huawei Technologies Co Ltd
Current assignee: Ruizhi Information Technology Binzhou Co ltd
Priority date: 2014-08-07
Filing date: 2014-08-07
Publication date: 2016-02-17
Anticipated expiration: 2034-08-07
Also published as: CN105338614B

Abstract

The embodiment of the invention provides a network registration method and device, relating to the technical field of communication. In a scene that a network is shared, the network registration successful probability is increased; the network registration time is shortened; and thus, the network registration efficiency is increased. The method can comprise the following steps: receiving a first message sent by UE, wherein the first message contains registration request information of the UE for respectively requesting registration to at least two PLMNs; respectively sending registration request messages corresponding to the PLMNs to core network equipment corresponding to the at least two PLMNs according to the first message; receiving a second message sent by first core network equipment, wherein the second message contains registration acceptance information representing that the registration request of the UE to the first PLMN is accepted; and sending a third message to the UE according to the second message, such that the UE completes registration in the first PLMN according to the third message, wherein the third message contains the registration acceptance information.

Description

Network registration method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a network registration method and apparatus.

Background

At present, for mobile communication widely adopted in the world, a UE (user equipment) needs to select a PLMN (public land mobile network) first, then perform network registration in the PLMN through an access network device and a core network device corresponding to the selected PLMN, and then perform normal communication, such as voice communication, data transmission, and the like. A shared network scenario exists in the mobile communication network, multiple mobile operators may share the same access network, and the UE may perform PLMN registration using information of multiple operators provided by the shared network.

In the prior art, in a scenario of sharing a network, a UE may select a PLMN from a plurality of PLMNs in a searched PLMN list, and send a registration request message to the PLMN to request network registration in the PLMN.

However, in the above process, if the registration request message is rejected, the UE continues to select the next PLMN to resend the registration request message until the UE successfully registers on the core network device corresponding to a certain PLMN, so that the network registration time is long, and the network registration efficiency is reduced.

Disclosure of Invention

Embodiments of the present invention provide a network registration method and apparatus, which can improve the probability of successful network registration and shorten the network registration time in a scene of sharing a network, thereby improving the efficiency of network registration.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, an embodiment of the present invention provides a network registration method, including:

receiving a first message sent by User Equipment (UE), wherein the first message comprises registration request information for requesting registration from the UE to at least two Public Land Mobile Networks (PLMN) respectively;

according to the first message, respectively sending registration request messages corresponding to the at least two PLMNs to core network equipment corresponding to the at least two PLMNs, wherein the registration request messages comprise registration request information corresponding to the registration request messages;

receiving a second message sent by a first core network device, where the second message includes registration acceptance information that characterizes that a registration request of the UE on a first PLMN is accepted, the first core network device is a core network device corresponding to the first PLMN, and the first PLMN is one PLMN of the at least two PLMNs;

and sending a third message to the UE according to the second message, wherein the third message comprises the registration acceptance information, so that the UE completes registration in the first PLMN according to the third message.

In a first possible implementation manner of the first aspect, after the sending, according to the first message, the registration request messages corresponding to the at least two PLMNs to the core network devices corresponding to the at least two PLMNs, the method further includes:

receiving a fourth message sent by a second core network device, where the fourth message includes registration rejection information indicating that the registration request of the UE on a second PLMN is rejected, the second core network device is a core network device corresponding to the second PLMN, and the second PLMN is a PLMN, except for the first PLMN, in the at least two PLMNs.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, after the receiving a fourth message sent by the second core network device, the method further includes:

and sending a fifth message to the UE, wherein the fifth message comprises the registration rejection information.

With reference to the first possible implementation manner of the first aspect, in a third possible implementation manner,

the third message further includes the registration rejection information.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, the sending a third message to the UE includes:

if the fourth message sent by the second core network device is received before the second message sent by the first core network device is received, the third message is sent to the UE after the second message sent by the first core network device is received.

With reference to the first aspect or any possible implementation manner of the first possible implementation manner to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the second message further includes a first registration status indication, where the first registration status indication is used to indicate that the registration request of the UE on the first PLMN is accepted;

wherein the sending the third message to the UE comprises:

and sending the third message to the UE according to the first registration state indication.

With reference to the fourth possible implementation manner or the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, the fourth message further includes a second registration status indication, where the second registration status indication is used to indicate that the UE is rejected from the second PLMN registration request;

wherein, after waiting for receiving the second message sent by the first core network device, sending the third message to the UE includes:

and according to the second registration state indication, after waiting for receiving the second message sent by the first core network device, sending the third message to the UE.

With reference to the first aspect or any possible implementation manner of the first possible implementation manner to the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner, the first message further includes registration priorities of the at least two PLMNs,

wherein, the sending, according to the first message, registration request messages corresponding to the at least two PLMNs to core network devices corresponding to the at least two PLMNs respectively includes:

and preferentially sending a registration request message corresponding to the PLMN to the core network equipment corresponding to the PLMN with the highest registration priority in the at least two PLMNs according to the registration priorities of the at least two PLMNs.

With reference to the first aspect or any possible implementation manner of the first possible implementation manner to the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner, before the receiving the first message sent by the UE, the method further includes:

and sending system information to the UE so that the UE selects the at least two PLMNs from the multiple PLMNs according to the identifiers of the multiple PLMNs included in the system information.

In a ninth possible implementation manner of the first aspect, the first message that includes registration request information for requesting registration from the UE to the at least two PLMNs respectively specifically includes:

the first message comprises registration request messages for requesting registration from the UE to the at least two PLMNs respectively; wherein,

the sending, according to the first message, registration request messages corresponding to the at least two PLMNs to the core network devices corresponding to the at least two PLMNs, where the registration request messages including registration request information corresponding to the registration request messages specifically includes:

according to registration request messages which are included in the first message and respectively request for registration from the UE to the at least two PLMNs, respectively sending registration request messages corresponding to the at least two PLMNs to core network equipment corresponding to the at least two PLMNs;

the second message includes registration acceptance information that indicates that the registration request of the UE on the first PLMN is accepted, specifically:

the second message comprises a registration acceptance message which represents that the registration request of the UE on the first PLMN is accepted;

the third message including the registration acceptance information specifically includes:

the third message includes the registration acceptance message.

With reference to the first possible implementation manner of the first aspect, in a tenth possible implementation manner,

the fourth message includes registration rejection information indicating that the registration request of the UE on the second PLMN is rejected, specifically:

the fourth message comprises a registration rejection message which indicates that the registration request of the UE on the second PLMN is rejected.

In a second aspect, an embodiment of the present invention further provides a network registration method, including:

receiving a second location update request message sent by a first core network device, where the second location update request message is used to characterize that a User Equipment (UE) requests registration or location update in a first Public Land Mobile Network (PLMN) corresponding to the first core network device, the first PLMN is one of at least two PLMNs, and the UE requests registration to the at least two PLMNs through the same access network device;

sending a location update confirmation message corresponding to the second location update request message to the first core network device;

within a preset time after the location update confirmation message is sent, if a first location update request message sent by a second core network device is received, rejecting the first location update request message, where the first location update request message is used to represent that the UE requests registration or location update in a second PLMN corresponding to the second core network device.

In a third aspect, an embodiment of the present invention further provides a network registration method, including:

sending a first message to access network equipment, wherein the first message comprises registration request information for respectively requesting registration to at least two Public Land Mobile Networks (PLMNs);

receiving a third message sent by the access network device, where the third message includes registration acceptance information, where the registration acceptance information indicates that a registration request in a first PLMN is accepted, the third message is sent by a first core network device to the access network device, the first core network device is a core network device corresponding to the first PLMN, and the first PLMN is one PLMN in the at least two PLMNs;

and completing registration in the first PLMN according to the third message.

In a first possible implementation manner of the third aspect, after receiving the third message sent by the access network device, the method further includes:

if receiving an authentication request message sent by second core network equipment, sending an authentication failure message to the second core network equipment; or,

if the authentication request message sent by the second core network equipment is received, the authentication request message is not replied;

the second core network device is a core network device corresponding to a second PLMN, and the second PLMN is a PLMN other than the first PLMN in the at least two PLMNs.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner, before the sending the first message to the access network device, the method further includes:

receiving system information sent by the access network equipment, wherein the system information comprises a plurality of PLMN identifications;

selecting the at least two PLMNs from a plurality of PLMNs corresponding to the identities of the plurality of PLMNs.

With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner, the selecting the at least two PLMNs from the multiple PLMNs includes:

selecting the at least two PLMNs from the plurality of PLMNs according to a preset condition.

With reference to the third possible implementation manner of the third aspect, in a fourth possible implementation manner, the preset condition includes registration priorities of the multiple PLMNs,

wherein the selecting the at least two PLMNs from the plurality of PLMNs according to a preset condition comprises:

selecting the at least two PLMNs with the highest priority from the plurality of PLMNs according to the registration priorities of the plurality of PLMNs.

With reference to the third aspect or any possible implementation manner of the first possible implementation manner to the fourth possible implementation manner of the third aspect, in a fifth possible implementation manner,

the first message includes registration priorities of the at least two PLMNs.

In a sixth possible implementation form of the third aspect,

the registration request information is specifically a registration request message, and the registration acceptance information is specifically a registration acceptance message.

In a fourth aspect, an embodiment of the present invention provides an access network device, including:

a receiving unit, configured to receive a first message sent by a user equipment UE, where the first message includes registration request information for requesting registration from at least two public land mobile networks PLMN by the UE;

a sending unit, configured to send, according to the first message received by the receiving unit, registration request messages corresponding to the at least two PLMNs to core network devices corresponding to the at least two PLMNs, respectively, where the registration request messages include registration request information corresponding to the registration request messages;

the receiving unit is further configured to receive a second message sent by a first core network device, where the second message includes registration acceptance information that indicates that a registration request of the UE on a first PLMN is accepted, the first core network device is a core network device corresponding to the first PLMN, and the first PLMN is one PLMN of the at least two PLMNs;

the sending unit is further configured to send a third message to the UE according to the second message received by the receiving unit, where the third message includes the registration acceptance information received by the receiving unit, so that the UE completes registration in the first PLMN according to the third message.

In a first possible implementation form of the fourth aspect,

the receiving unit is further configured to receive a fourth message sent by a second core network device after the sending unit sends, according to the first message, registration request messages corresponding to the at least two PLMNs to the core network devices corresponding to the at least two PLMNs, where the fourth message includes registration rejection information indicating that the registration request of the UE on the second PLMN is rejected, the second core network device is a core network device corresponding to the second PLMN, and the second PLMN is a PLMN, except for the first PLMN, in the at least two PLMNs.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner,

the sending unit is further configured to send a fifth message to the UE after the receiving unit receives a fourth message sent by a second core network device, where the fifth message includes the registration rejection information received by the receiving unit.

With reference to the second possible implementation manner of the fourth aspect, in a third possible implementation manner,

the third message sent by the sending unit further includes the registration rejection information received by the receiving unit.

With reference to the third possible implementation manner of the fourth aspect, in a fourth possible implementation manner,

the sending unit is further configured to, if the receiving unit receives the fourth message sent by the second core network device before the receiving unit receives the second message sent by the first core network device, wait for the receiving unit to receive the second message sent by the first core network device, and send the third message to the UE.

With reference to the fourth aspect or any possible implementation manner of the first possible implementation manner to the fourth possible implementation manner of the fourth aspect, in a fifth possible implementation manner, the second message received by the receiving unit further includes a first registration status indication, where the first registration status indication is used to indicate that the registration request of the UE on the first PLMN is accepted;

the sending unit is specifically configured to send the third message to the UE according to the first registration status indication received by the receiving unit.

With reference to the fourth possible implementation manner to the fifth possible implementation manner of the fourth aspect, in a sixth possible implementation manner, the fourth message received by the receiving unit further includes a second registration status indication, where the second registration status indication is used to indicate that the UE is rejected to register in the second PLMN,

the sending unit is specifically configured to send the third message to the UE after the receiving unit receives the second message sent by the first core network device according to the second registration status indication received by the receiving unit.

With reference to the fourth aspect or any possible implementation manner of the first possible implementation manner to the sixth possible implementation manner of the fourth aspect, in a seventh possible implementation manner, the first message received by the receiving unit further includes registration priorities of the at least two PLMNs,

the sending unit is specifically configured to preferentially send, according to the registration priority of the at least two PLMNs received by the receiving unit, a registration request message corresponding to a PLMN with a highest registration priority to a core network device corresponding to the PLMN in the at least two PLMNs.

With reference to the fourth aspect or any possible implementation manner of the first possible implementation manner to the seventh possible implementation manner of the fourth aspect, in an eighth possible implementation manner,

the sending unit is further configured to send system information to the UE before the receiving unit receives the first message sent by the UE, so that the UE selects the at least two PLMNs from the multiple PLMNs according to identifiers of the multiple PLMNs included in the system information.

In a ninth possible implementation form of the fourth aspect,

the first message received by the receiving unit includes registration request information that the UE requests registration from at least two PLMNs, specifically: the first message comprises registration request messages for requesting registration from the UE to the at least two PLMNs respectively; wherein,

the sending unit is specifically configured to send, according to registration request messages that the UE requests registration to the at least two PLMNs respectively and that are included in the first message received by the receiving unit, registration request messages corresponding to the at least two PLMNs to core network devices corresponding to the at least two PLMNs respectively;

the second message received by the receiving unit includes registration acceptance information that indicates that the registration request of the UE on the first PLMN is accepted, specifically:

the third message sent by the sending unit, which includes the registration acceptance information, specifically includes:

the third message includes the registration acceptance message.

With reference to the first possible implementation manner of the fourth aspect, in a tenth possible implementation manner,

the fourth message received by the receiving unit includes registration rejection information indicating that the registration request of the UE on the second PLMN is rejected, specifically:

In a fifth aspect, an embodiment of the present invention further provides a home location register HLR, including:

a receiving unit, configured to receive a second location update request message sent by a first core network device, where the second location update request message is used to characterize that a user equipment UE requests registration or location update in a first public land mobile network PLMN corresponding to the first core network device, the first PLMN is one PLMN of at least two PLMNs, and the UE requests registration from the at least two PLMNs through the same access network device;

a sending unit, configured to send, to the first core network device, a location update confirmation message corresponding to the second location update request message received by the receiving unit;

a rejecting unit, configured to reject, within a preset time after the sending unit sends the location update confirmation message, a first location update request message sent by a second core network device if the first location update request message is received, according to the location update confirmation message sent by the sending unit, where the first location update request message is used to represent that the UE requests registration or location update in a second PLMN corresponding to the second core network device.

In a sixth aspect, an embodiment of the present invention further provides a UE, including:

a sending unit, configured to send a first message to an access network device, where the first message includes registration request information for requesting registration to at least two public land mobile networks PLMN, respectively;

a receiving unit, configured to receive a third message sent by the access network device, where the third message includes registration acceptance information, where the registration acceptance information indicates that a registration request in a first PLMN is accepted, the third message is sent by a first core network device to the access network device, the first core network device is a core network device corresponding to the first PLMN, and the first PLMN is one PLMN in the at least two PLMNs;

a registering unit, configured to complete registration in the first PLMN according to the third message received by the receiving unit.

In a first possible implementation manner of the sixth aspect, the UE further includes a replying unit,

the sending unit is further configured to send an authentication failure message to the second core network device if the receiving unit receives an authentication request message sent by the second core network device after the receiving unit receives the third message sent by the access network device; or,

the reply unit is configured to not reply the authentication request message if the receiving unit receives the authentication request message sent by the second core network device;

the second core network device is a core network device corresponding to a second PLMN, and the second PLMN is a PLMN of the at least two PLMNs except the first PLMN.

With reference to the sixth aspect or the first possible implementation manner of the sixth aspect, in a second possible implementation manner, the UE further includes a selection unit,

the receiving unit is further configured to receive system information sent by an access network device before the first message is sent to the access network device, where the system information includes identifiers of multiple PLMNs;

the selecting unit is configured to determine the at least two PLMNs from the multiple PLMNs corresponding to the identifiers of the multiple PLMNs received by the receiving unit.

With reference to the second possible implementation manner of the sixth aspect, in a third possible implementation manner,

the selecting unit is specifically configured to select the at least two PLMNs from the multiple PLMNs according to a preset condition.

With reference to any one possible implementation manner of the third possible implementation manner, in a fourth possible implementation manner, the preset condition includes registration priorities of the multiple PLMNs,

the selecting unit is specifically configured to select the at least two PLMNs with the highest priority from the multiple PLMNs according to the registration priorities of the multiple PLMNs.

With reference to the sixth aspect or any possible implementation manner of the first possible implementation manner to the fourth possible implementation manner of the sixth aspect, in a fifth possible implementation manner,

the first message sent by the sending unit includes registration priorities of the at least two PLMNs.

In a sixth possible implementation form of the sixth aspect,

the registration request information sent by the sending unit is specifically a registration request message, and the registration acceptance information received by the receiving unit is specifically a registration acceptance message.

The embodiment of the invention provides a network registration method and a device, which are characterized in that registration request information sent by UE and respectively requesting registration to at least two PLMNs is received, registration request information corresponding to the PLMNs is sent to core network equipment corresponding to the at least two PLMNs according to the registration request information, second information including registration acceptance information sent by first core network equipment is received, and finally the second information is sent to the UE, so that the UE completes registration in the first PLMN according to the second information. By the scheme, the access network equipment can receive the registration request information respectively corresponding to the at least two PLMNs sent by the UE at one time and send the registration request information respectively corresponding to the at least two PLMNs to the corresponding core network equipment, so that the at least two core network equipment respectively corresponding to the at least two PLMNs can respectively perform the network registration process of the UE in the at least two PLMNs, the probability of successful network registration can be improved in the scene of network sharing, the network registration time can be shortened, and the network registration efficiency can be improved.

Drawings

Fig. 1 is a first flowchart of a network registration method according to an embodiment of the present invention;

fig. 2 is a second flowchart of a network registration method according to another embodiment of the present invention;

fig. 3 is a third flowchart of a network registration method according to a further embodiment of the present invention;

fig. 4 is a first interaction diagram of a network registration method according to an embodiment of the present invention;

fig. 5 is an interaction diagram ii of a network registration method according to an embodiment of the present invention;

fig. 6 is a fourth flowchart of a network registration method according to an embodiment of the present invention;

fig. 7 is a first schematic structural diagram of an access network device 1 according to an embodiment of the present invention;

fig. 8 is a first structural diagram of an HLR2 according to an embodiment of the present invention;

fig. 9 is a structural diagram of an HLR2 according to an embodiment of the present invention;

fig. 10 is a structural diagram of a HLR2 according to a third embodiment of the present invention;

fig. 11 is a first schematic structural diagram of a UE3 according to a further embodiment of the present invention;

fig. 12 is a second schematic structural diagram of a UE3 according to another embodiment of the present invention;

fig. 13 is a third schematic structural diagram of a UE3 according to another embodiment of the present invention;

fig. 14 is a second schematic structural diagram of an access network device according to a further embodiment of the present invention;

fig. 15 is a schematic structural diagram of an HLR according to an embodiment of the present invention;

fig. 16 is a fourth schematic structural diagram of a UE according to an embodiment of the present invention.

Detailed Description

A network registration method and apparatus provided in an embodiment of the present invention are described in detail below with reference to the accompanying drawings.

A UE (user equipment) may be a wireless terminal, which may be a device that provides voice and/or data connectivity only to a user, a handheld device with wireless connection capability, or other processing device connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a RAN (radio access network) and may exchange language and/or data with the radio access network. For example, PCS (personal communication service) phones, cordless phones, Session Initiation Protocol (SIP) phones, WLL (wireless local loop) stations, PDAs (personal digital assistants), and the like. A wireless terminal may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a Mobile station (MobileStation), a Mobile station (Mobile), a remote station (RemoteStation), an access point (access point), a remote terminal (RemoteTerminal), an access terminal (access terminal), a user terminal (UserTerminal), a user agent (usergent), or a user equipment.

In The prior art, taking 3G (3rd generation, third generation mobile communication technology) as an example, according to The general flow description of UE network registration of The standard agreed by The current 3GPP (The3rd generation partnership project), The general process of UE network registration is as follows:

(1) and the UE selects a proper PLMN (public land Mobile network).

(2) And the UE selects the cell belonging to the PLMN.

(3) And the UE acquires cell information of adjacent cells from system information broadcast and selects one of the adjacent cells to camp on.

(4) And the UE initiates a network registration process to the adjacent cell.

The purpose of the UE camping in the cell is to enable the UE to receive the system information broadcasted by the PLMN of the cell, and to initiate a random network registration process in the cell.

Example one

An embodiment of the present invention provides a network registration method, as shown in fig. 1, where the method is a network registration method on an access network device side, and the method may include:

s101, an access network device receives a first message sent by UE, wherein the first message comprises registration request information that the UE requests registration from at least two PLMNs respectively.

It should be noted that the process of network registration of the UE in the PLMN is implemented through signaling interaction between the access network device, the core network device, and the UE.

Further, before the UE initiates network registration, capability negotiation needs to be performed between the access network device, the core network device, and the UE, so that normal signaling interaction can be performed among the access network device, the core network device, and the UE.

Specifically, the UE sends a capability indication message to the access network device, the access network device sends the capability indication message to the core network device, and the core network device sends a reply capability indication message to the access network device according to the capability indication message, and transmits the reply capability indication message to the UE through the access network device, thereby completing capability negotiation among the access network device, the core network device, and the UE.

Further, the access network is a technology for connecting to the UE from an operator backbone network, and specifically, the operator backbone network is divided into three layers: the core layer, the convergence layer, and the access layer are access networks from the access layer to the UE. The access network may be GPRS (general packet radio service), GSM (global system for mobile communication), 3G, etc. The core layer is a network, i.e. PLMN, providing UE connection, UE management and completing service bearer on the core layer, wherein the core network provides an interface to an external network for the bearer network.

The device in the access network may be an eNB (evolved node b), an RNC (radio network controller), or a BSC (base station controller), that is, an access network device. The device in the core network may be an MME (mobility management entity), an SGSN (serving GPRS support node), or an MSC (mobile switching center), that is, a core network device.

Specifically, taking a PS (packet switch) domain of a mobile communication system as an example, in 3G, an access network device is an RNC, and a core network device is an SGSN; in 4G (4th generation, fourth generation mobile communication technology), an access network device is an eNB, and a core network device is an MME; in 2G (2rd generation, second generation mobile communication technology), an access network device is a BSC and a core network device is an SGSN. Taking CS (circuit switched) domain of the mobile communication system as an example, in 3G/2G, the access network device is RNC (3G)/BSC (2G), and the core network device is MSC.

It should be noted that the network registration method provided in the embodiment of the present invention is a method for performing network registration in a PLMN by a UE when multiple operators can share an access network.

In the network registration process of the UE in the PLMN, the registration may not always be successful. The embodiment of the present invention provides a method for network registration, which takes the case of successful registration on a PLMN as an example.

The access network device receives direct transfer messages corresponding to registration request information, which are sent by at least two core network devices respectively, where the direct transfer messages may include registration acceptance information (in this case, the direct transfer messages may be referred to as registration acceptance information), and may also further include registration rejection information, where the registration acceptance information is used to characterize that the registration request of the UE in the PLMN corresponding to the identifier of the PLMN is accepted, the registration rejection information is used to characterize that the registration request of the UE in the PLMN corresponding to the identifier of the PLMN is rejected, and the direct transfer messages carry the identifier of the UE.

In the embodiment of the invention, access network equipment receives a first message sent by UE, wherein the first message comprises registration request information for requesting registration from the UE to at least two PLMNs respectively.

Optionally, in this embodiment of the present invention, the first message received by the access network device may include identifiers of at least two PLMNs, where the identifiers of the at least two PLMNs correspond to the at least two PLMNs, or may include a group identifier of a group of PLMNs, where the group of PLMNs includes the at least two PLMNs, and the access network device may communicate with all PLMNs corresponding to the group identifier according to the group identifier of the group of PLMNs. In the embodiment of the present invention, an identifier of one PLMN corresponding to one PLMN is taken as an example for description.

In this embodiment of the present invention, the first message received by the access network device may include identifiers of at least two PLMNs, where an identifier of one PLMN may correspond to one registration request information, and the one registration request information is used to request network registration in the PLMN corresponding to the identifier of the one PLMN. The access network device may obtain the identities of the at least two PLMNs sent by the UE from the first message, and may obtain registration request information corresponding to the identities of the at least two PLMNs according to the first message, so that the UE performs network registration in the PLMNs corresponding to the identities of the at least two PLMNs.

Optionally, the first message includes registration request information that the UE requests registration from the at least two PLMNs, respectively, and may specifically be the first message includes registration request information that the UE requests registration from the at least two PLMNs, respectively, or may also include registration request information that the UE requests registration from the at least two PLMNs, respectively.

Specifically, the access network device obtains a registration request message corresponding to at least two PLMNs included in the first message according to the first message, and forwards the registration request message to communicate with a corresponding core network device; or the access network device acquires registration request information respectively corresponding to the identifiers of the at least two PLMNs according to the first message, and generates a registration request message corresponding to the registration request information, for communication with the corresponding core network device. The specific implementation manner may be determined according to the function of the actual access network device, and the present invention is not limited thereto.

It should be noted that, for example, the format of the data frame carrying the message 2 in the message 1 is specifically that the carried message 2 is stored in a special information field of the data frame in a message form, and the data frame is encapsulated into the message 1.

It can be understood that the access network device may obtain registration request information respectively requested by the UE to the at least two PLMNs at a time, so that the UE performs network registration in the at least two PLMNs, and therefore, the access network device may improve the probability of successful network registration and shorten the network registration time in a scenario of sharing a network, thereby improving the efficiency of network registration.

S102, the access network equipment sends registration request messages corresponding to at least two PLMNs to core network equipment corresponding to the PLMNs respectively according to the first messages, and the registration request messages comprise registration request information corresponding to the registration request messages.

After the access network device receives a first message sent by the UE, the access network device sends, according to the first message, registration request messages corresponding to at least two PLMNs to core network devices corresponding to the PLMNs, where the registration request messages include registration request information corresponding to the registration request messages, so that the core network devices corresponding to the at least two PLMNs can determine whether to allow the UE to perform network registration in the PLMN according to the registration request messages corresponding to the PLMNs, where one PLMN and one core network device correspond one to one, respectively.

Specifically, the access network device sends a registration request message corresponding to at least two core network devices corresponding to the identifiers of at least two PLMNs, so that the at least two core network devices can determine whether to allow the UE to perform network registration in the PLMN corresponding to the identifier of the PLMN according to the registration request message, where an identifier of one PLMN, and one core network device are in one-to-one correspondence respectively.

It should be noted that, in the embodiment of the present invention, an identifier of each PLMN corresponds to one PLMN, each PLMN corresponds to one core network device, and the identifier of each PLMN also corresponds to one registration request message. One core network device can only communicate with the PLMN corresponding to the core network device.

Specifically, taking an identifier of one PLMN as an example, the access network device sends a registration request message corresponding to the identifier of the one PLMN to a core network device corresponding to the one PLMN, so that the one core network device can determine whether to allow the UE to perform network registration in the PLMN corresponding to the identifier of the one PLMN according to the registration request message.

For example, after the access network device acquires the PLMN1 and the PLMN2 sent by the UE, and the registration request message corresponding to the PLMN1 and the registration request message corresponding to the PLMN2, the access network device sends the registration request message corresponding to the PLMN1 to the core network device corresponding to the PLMN1, and the access network device sends the registration request message corresponding to the PLMN2 to the core network device corresponding to the PLMN2, so that the core network device corresponding to the PLMN1 may determine whether to allow the UE to perform network registration in the PLMN1 according to the registration request message corresponding to the PLMN1, and the core network device corresponding to the PLMN2 may determine whether to allow the UE to perform network registration in the PLMN2 according to the registration request message corresponding to the PLMN 2.

S103, the access network device receives a second message sent by the first core network device, where the second message includes registration acceptance information that indicates that the registration request of the UE on the first PLMN is accepted, the first core network device is a core network device corresponding to the first PLMN, and the first PLMN is one PLMN of the at least two PLMNs.

After the access network device sends registration request messages corresponding to at least two PLMNs to core network devices corresponding to the PLMNs respectively according to the first message, the access network device receives a second message sent by the first core network device, where the first core network device is a core network device corresponding to the first PLMN, the first PLMN is one of the at least two PLMNs, and the second message includes registration acceptance information that characterizes that the registration request of the UE in the first PLMN is accepted.

Optionally, the second message may be a direct transfer message sent by the first core network.

For example, taking an identifier of one PLMN as an example, the access network device receives a second message, which is sent by the first core network device corresponding to the identifier of the first PLMN and includes registration acceptance information, where the registration request information corresponds to the identifier of the first PLMN, and the registration acceptance information is used to characterize that the registration request information of the UE on the first PLMN is accepted.

It should be noted that the direct transfer message received by the access network device from any core network device may include any one of registration acceptance information and registration rejection information, where the registration acceptance information is used to characterize that the accepting UE performs network registration in the corresponding PLMN, and the registration rejection information is used to characterize that the rejecting UE performs network registration in the corresponding PLMN. Specifically, whether the direct transfer message corresponding to the registration request message includes registration acceptance information or registration rejection information is determined by the core network device corresponding to the PLMN.

Illustratively, the access network device receives a direct transfer message corresponding to the registration request message sent by the core network device 1 corresponding to the PLMN1, and the registration request message corresponds to the PLMN1, the direct transfer message is used for characterizing that the UE registers the acceptance information or registration rejection information in the PLMN1, and the access network device receives a direct transfer message corresponding to the registration request message sent by the core network device 2 corresponding to the PLMN2, and the registration request message corresponds to the PLMN2, the direct transfer message is used for characterizing that the UE registers the acceptance information or registration rejection information in the PLMN 2. In the embodiment of the present invention, the second message, that is, the direct transfer message, sent by the first core network device includes registration acceptance information.

Optionally, the registration acceptance information included in the second message and characterizing that the registration request of the UE on the first PLMN is accepted specifically is: the second message includes a registration accept message indicating that the registration request of the UE on the first PLMN is accepted, that is, the second message includes a registration accept message indicating that the registration request of the first PLMN is accepted.

It can be understood that the direct transfer messages respectively sent by the at least two core network devices corresponding to the identifiers of the at least two PLMNs are asynchronous, and therefore, the access network device sequentially acquires the direct transfer messages respectively sent by the at least two core network devices and corresponding to the registration request message.

Further, the direct transfer message carries an identifier of the UE, where the identifier of the UE may be an IMSI (international mobile subscriber identity), and the IMSI is a mark for distinguishing a mobile subscriber and is stored in a SIM (subscriber identity module) card. The identity of the UE may also be a temporary identity allocated to the UE by the network, such as a TMSI (temporal mobile subscriber identity) or P-TMSI (packetttepertemobilesponditiondidentity group temporary mobile subscriber identity) or a GUTI (globally unique temporary user equipment identity).

And S104, the access network equipment sends a third message to the UE according to the second message, wherein the third message comprises registration acceptance information, so that the UE completes registration in the first PLMN according to the third message.

After the access network device receives the second message sent by the first core network device, the access network device sends a third message to the UE according to the second message, where the third message includes registration acceptance information, so that the UE completes registration in the first PLMN according to the registration acceptance information.

Specifically, the access network device sends a third message to the UE according to the identifier of the UE and the second message, where the third message includes registration acceptance information, so that the UE completes registration in the first PLMN according to the registration acceptance information.

It can be understood that the third message sent by the access network device carries registration acceptance information, where the registration acceptance information is used to characterize that the registration request information of the UE in the first PLMN is accepted.

Further, the PLMNs in the embodiments of the present invention are all identified by the identifiers of the PLMNs.

For example, if the direct transfer message corresponding to the PLMN1 received by the access network device includes registration rejection information, and the direct transfer message corresponding to the PLMN2 acquired by the access network device includes registration acceptance information, the access network device sends the registration acceptance information to the UE according to the identifier of the UE, so that the UE performs network registration in the PLMN whose registration request is accepted according to the registration acceptance information in the direct transfer message, that is, performs network registration in the PLMN 2.

Optionally, the third message including the registration acceptance information specifically includes: the third message includes a registration accept message.

It can be understood that, because the access network device may send the registration request message to the at least two PLMNs corresponding to the identifiers of the at least two PLMNs in the process of one network registration, so that the UE may perform the network registration in the at least two PLMNs at one time, the access network device may improve the probability of success of the network registration and shorten the network registration time in a scenario of sharing a network, thereby improving the efficiency of the network registration.

An embodiment of the present invention further provides a network registration method, as shown in fig. 2, where the method is a network registration method on an HLR (home location register) side, and the method may include:

s201, the HLR receives a second location update request message sent by the first core network device, where the second location update request message is used to characterize that the UE requests registration or location update in a first PLMN corresponding to the first core network device, the first PLMN is one of at least two PLMNs, and the UE requests registration from the at least two PLMNs through the same access network device.

Further, the HLR receives a second location update request message sent by the first core network device, where the second location update request message is used to characterize that the UE requests registration or location update in the first PLMN corresponding to the first core network device, and the HLR sends a subscription data insertion request message to the first core network device according to the second location update request message, so that the first core network device determines whether to allow the UE to register or location update in the first PLMN according to subscription data of the UE.

Further, the HLR receives an insert subscription data acknowledgement message sent by the first core network device, where the insert subscription data acknowledgement message is used to characterize that the registration request or the location update request of the UE in the first PLMN corresponding to the first core network device is accepted.

S202, the HLR sends a location update confirmation message corresponding to the second location update request message to the first core network device.

After receiving the second location update request message sent by the first core network device, the HLR sends a location update confirmation message corresponding to the second location update request message to the first core network device.

Specifically, the first core network device determines whether to allow the UE to register in the first PLMN or to update the location according to the subscription data insertion message, and then sends a subscription data insertion confirmation message to the HLR. And the HLR receives the subscription data inserting confirmation message sent by the first core network equipment, if the subscription data inserting confirmation message is the subscription data successfully inserting confirmation message, the HLR stores the position information successfully registered by the UE in the first PLMN, and sends a position updating confirmation message to the first core network equipment, wherein the position updating confirmation message corresponds to the second position updating request message.

S203, within a preset time after the HLR sends the location update confirmation message, if the HLR receives a first location update request message sent by a second core network device, the HLR rejects the first location update request message, where the first location update request message is used to represent that the UE requests registration or location update in a second PLMN corresponding to the second core network device.

After the HLR sends a location update confirmation message to the first core network device according to the second location update request message, within a preset time after the HLR sends the location update confirmation message, if a first location update request message sent by the second core network device is received, the HLR rejects to accept the first location update request message, where the first location update request message is used to represent that the UE requests registration or location update in a second PLMN corresponding to the second core network device.

Specifically, after the UE performs network registration in a first PLMN corresponding to a first core network device, that is, after the HLR sends a location update confirmation message to the first core network device, the HLR starts a timer, where the timing time of the timer is a preset time, and within the timing time of the timer, if the HLR receives a first location update request message sent by a second core network device, the HLR rejects a first location update request message of the second core network device according to the location update confirmation message received from the first core network device or location information stored by the HLR and successfully registered by the UE in the first PLMN, where the location update confirmation message is used to indicate that the UE is registered or location updated in the first PLMN corresponding to the first core network device, and the first location update request message is used to indicate that the UE is registered or location updated in the second PLMN corresponding to the second core network device, therefore, the wrong operation indication of the UE which is subjected to network registration is avoided, and the efficiency of the network registration of the UE in the PLMN is improved.

It can be understood that, in the embodiment of the present invention, since the UE may simultaneously send the registration request messages corresponding to the identifiers of the at least two PLMNs to the core network devices corresponding to the identifiers of the at least two PLMNs through the access network device, the HLR may sequentially receive the location update request messages sent by the core network devices corresponding to the identifiers of the at least two PLMNs, so that the HLR may receive the location update request message sent by the core network device corresponding to another PLMN within a short time after sending the location update confirmation message to the core network device corresponding to one PLMN. In the network registration method provided by the embodiment of the present invention, the situation that the HLR updates the wrong location of the UE that has performed network registration under such a situation is avoided.

Specifically, after the HLR sends a location update confirmation message to the first core network device, within a preset time, if a first location update request message sent by the second core network device is received, the HLR rejects the first location update request message according to the location update confirmation message, including location information stored by the HLR, where the UE is successfully registered in the first PLMN, where the first location update request message is used to represent that the UE requests registration or location update in a second PLMN corresponding to the second core network device.

It should be noted that, after the HLR sends the location update confirmation message to the first core network device, if the HLR receives the first location update request message sent by the second core network device within a short time, the HLR may consider that the first location update request message received within the time is a process of providing network registration again for the UE that has already performed network registration, at this time, since the HLR sends the location update confirmation message to the first core network device to indicate that the UE has successfully performed network registration or location update in the first PLMN, in order to avoid the HLR erroneously modifying the location information of the UE that has successfully registered in the first PLMN, the HLR rejects the first location request message.

Further, in the embodiment of the present invention, since the first location request message may be rejected by the HLR only when the UE successfully registered by the first core network device and the UE that needs to perform the first location update request by the second core network device are the same UE, before the HLR rejects the first location request message, the HLR may determine, according to the UE identifier, whether the UE successfully registered by the first core network device and the UE that needs to perform the first location update request by the second core network device are the same UE. Because the identification of the UE may be carried in the insertion subscription data confirmation message sent by the first core network device and the first location update request message sent by the second core network device, the same UE is used if the identification of the UE may be carried in the insertion subscription data confirmation message sent by the first core network device and the identification of the UE may be carried in the first location update request message sent by the second core network device.

It is understood that the preset time is a short period of time, since the time for the UE to perform a network registration is short. If the UE successfully registers to the first PLMN for a long time, and if the HLR receives the first location update request message sent by the second core network device, the first location update request message may initiate a registration request to the second PLMN again as needed by the UE instead of one PLMN of the at least two PLMNs of the registration request initiated by the UE this time.

In the embodiment of the present invention, the HLR receives an insert subscription data acknowledgement message sent by a first core network device, where the insert subscription data acknowledgement message is used to characterize that a registration request or a location update request of a UE in a first PLMN corresponding to the first core network device is accepted, the first PLMN is one PLMN of at least two PLMNs, and the at least two PLMNs are selected by the UE from multiple PLMNs determined by the UE and connected to the same access network device.

An embodiment of the present invention further provides a network registration method, as shown in fig. 3, where the method is a network registration method on a UE side, and the method may include:

s301, UE sends a first message to access network equipment, wherein the first message comprises registration request information for respectively requesting registration to at least two PLMNs.

Specifically, the UE sends a first message to the access network device, where the first message includes the identifiers of the at least two PLMNs and registration request information corresponding to the identifiers of the at least two PLMNs, so that the access network device sends the registration request message corresponding to the registration request information to the at least two core network devices corresponding to the identifiers of the at least two PLMNs, and thus the at least two core network devices respectively determine whether to allow the UE to perform network registration in the PLMN corresponding to the identifier of the PLMN according to the registration request message, where an identifier of one PLMN, and one core network device are respectively in one-to-one correspondence.

Further, before the UE sends the first message to the access network device, the UE receives the identifier of the PLMN sent by the access network device. In the embodiment of the invention, the UE receives the identifications of a plurality of PLMNs from the access network equipment.

Specifically, the UE receives system information sent by the access network device, and acquires the identifiers of the multiple PLMNs from the system information.

It should be noted that, because the access network in the embodiment of the present invention may be shared by multiple operators, the system information sent by the access network device in the broadcast form may include identifiers of PLMNs of the multiple operators, so as to facilitate selection when the UE performs network registration.

Further, the identifier of the PLMN may be represented in various forms such as numbers, letters, and the like, and the embodiments of the present invention are not limited thereto.

For example, the identifier of the PLMN may be PLMN1, or a.

Further, after receiving the identities of the multiple PLMNs sent by the access network device, the UE selects the identities of at least two PLMNs from the identities of the multiple PLMNs, that is, the UE determines the identities of at least two PLMNs from the identities of the multiple PLMNs.

It should be noted that the identities of the multiple PLMNs acquired by the UE from the access network device may be provided to the UE in the form of a list for selection. The UE may select at least two PLMNs from the PLMNs corresponding to the identities of the multiple PLMNs by determining the identities of the at least two PLMNs from the received identities of the multiple PLMNs.

Illustratively, the UE receives the PLMN1, the PLMN2, the PLMN3, the PLMN4, and … … from the access network device, and selects the PLMN1 and the PLMN2 from the PLMN1, the PLMN2, the PLMN3, the PLMN4, and … … for network registration according to preset conditions.

It should be noted that the identifiers of at least two PLMNs sent by the UE correspond to registration request information, and the registration request information is used to request network registration in the PLMNs corresponding to the identifiers of the at least two PLMNs. The UE may send the identifiers of the at least two PLMNs and registration request information corresponding to the identifiers of the at least two PLMNs to the access network device at the same time, so as to request network registration in the PLMNs corresponding to the identifiers of the at least two PLMNs.

It can be understood that the UE may send the identifiers of the at least two PLMNs and the registration request information corresponding to the identifiers of the at least two PLMNs at a time to request network registration in the PLMNs corresponding to the identifiers of the at least two PLMNs, so that the UE can improve the probability of successful network registration and shorten the network registration time in a network sharing scenario, thereby improving the efficiency of network registration.

Further, the UE sends the identifiers of the at least two PLMNs and registration request information corresponding to the identifiers of the at least two PLMNs to the access network device, so that the access network device sends the registration request information corresponding to the registration request information to the at least two core network devices corresponding to the identifiers of the at least two PLMNs, so that the at least two core network devices can determine whether to allow the UE to perform network registration in the PLMNs corresponding to the identifiers of the PLMNs according to the registration request information, and send a message including registration acceptance information or registration rejection information corresponding to the registration request information, that is, a direct transfer message to the UE, through the access network device.

It should be noted that, in the embodiment of the present invention, an identifier of each PLMN corresponds to one PLMN, each PLMN corresponds to one core network device, and the identifier of each PLMN also corresponds to one registration request message. One core network device can only communicate with the PLMN corresponding to the one core network device.

Optionally, the registration request information may be specifically a registration request message.

For example, the UE sends the PLMN1 and the PLMN2, and the registration request information corresponding to the PLMN1 and the registration request information corresponding to the PLMN2 to the access network device, so that the access network device sends the registration request message corresponding to the PLMN1 to the core network device corresponding to the PLMN1, and the access network device sends the registration request message corresponding to the PLMN2 to the core network device corresponding to the PLMN2, so that the core network device corresponding to the PLMN1 may determine whether to allow the UE to perform network registration in the PLMN1 according to the registration request message corresponding to the PLMN1, and so that the core network device corresponding to the PLMN2 may determine whether to allow the UE to perform network registration in the PLMN2 according to the registration request message corresponding to the PLMN 2.

S302, the UE receives a third message sent by the access network device, where the third message includes registration acceptance information, where the registration acceptance information indicates that the registration request in the first PLMN is accepted, the third message is sent by the first core network device to the access network device, the first core network device is a core network device corresponding to the first PLMN, and the first PLMN is one PLMN in at least two PLMNs.

After the UE sends the first message to the access network device, the UE receives a third message sent by the access network device, where the third message includes registration acceptance information, the registration acceptance information is sent by the first core network device to the access network device, the first core network device is a core network device corresponding to a first PLMN, the first PLMN is one PLMN of at least two PLMNs, and the registration acceptance information indicates that a registration request in the first PLMN is accepted.

Illustratively, the UE receives the third message, where the third message includes a downlink direct transfer message corresponding to the PLMN2 and being registration acceptance information, and the PLMN2 is the first PLMN.

It can be understood that, because the UE may send the registration request message to the at least two PLMNs corresponding to the identifiers of the at least two PLMNs in the process of one network registration to request that the network registration may be performed in the at least two PLMNs at one time, the UE may improve the probability of success of the network registration and shorten the network registration time in a scenario of sharing a network, thereby improving the efficiency of the network registration.

S303, the UE completes registration in the first PLMN according to the third message.

And the UE receives a third message sent by the access network equipment, and after the third message comprises registration acceptance information, the UE completes registration in the first PLMN accepted by registration according to the third message.

Further, the downlink direct transfer message received by the UE may include registration acceptance information or registration rejection information, that is, the UE may receive the downlink direct transfer message sent by the core network device corresponding to the first PLMN whose registration request is accepted through the access network device, or receive the downlink direct transfer message sent by the core network device corresponding to the second PLMN whose registration request is rejected through the access network device, and the UE may only complete registration in the PLMN whose downlink direct transfer message is the registration acceptance information, which is specifically described in detail in the subsequent embodiments.

For example, it is assumed that the UE receives a downlink direct transfer message including registration rejection information corresponding to the PLMN1, and the UE receives a downlink direct transfer message including registration acceptance information corresponding to the PLMN 2. And the UE completes registration in the PLMN to which the registration request is accepted, that is, completes registration in the PLMN2, according to the downlink direct transfer message, that is, the third message.

In the network registration method provided by the embodiment of the present invention, the access network device receives registration request information sent by the UE and requesting registration to at least two PLMNs, and the access network device sends a registration request message corresponding to the PLMN to the core network devices corresponding to the at least two PLMNs according to the registration request information, and the access network device receives a second message including registration acceptance information sent by the first core network device, and finally, the access network device sends a third message including the registration acceptance information to the UE, so that the UE completes registration in the first PLMN according to the registration acceptance information in the third message. By the scheme, the access network equipment can receive the registration request information respectively corresponding to the at least two PLMNs sent by the UE at one time and send the registration request information respectively corresponding to the at least two PLMNs to the corresponding core network equipment, so that the at least two core network equipment respectively corresponding to the at least two PLMNs can respectively perform the network registration process of the UE in the at least two PLMNs, the probability of successful network registration can be improved in the scene of network sharing, the network registration time can be shortened, and the network registration efficiency can be improved.

Example two

An embodiment of the present invention provides a network registration method, which takes an example that an identifier of a PLMN corresponds to a PLMN as an example, as shown in fig. 4, the method may include:

s401, the access network equipment sends a system message to the UE, wherein the system message comprises the identifiers of a plurality of PLMNs.

The access network is a series of implemented systems between the service node interface and the user network interface providing the transport entity with the required transport capabilities, the access network being configurable and manageable via a management interface.

It should be noted that the whole telecommunication network can be divided into three parts according to the network function: transmission networks, switching networks and access networks. Wherein the access network is responsible for transparently delivering telecommunications traffic to the UE. Specifically, the access is a connection part between the local exchange and the UE, and generally includes a subscriber line transmission system, a multiplexing device, a cross-connection device, or a user/network terminal device. And the entities providing the services are service nodes.

Further, the access network is a connection technology from an operator backbone network to the UE, and specifically, the operator backbone network is divided into three layers: the core layer, the convergence layer, and the access layer are access networks from the access layer to the UE. The access network may be GPRS, GSM, 3G, etc. The core layer is used for realizing an optimized transmission function between backbone networks, the core network is a network which provides UE connection, UE management and service completion bearing on the core layer, and the core network is used as a bearing network and provides an interface to an external network.

The device in the access network may be an eNB, an RNC, or a BSC, that is, an access network device. The devices in the core network may be MME, SGSN or MSC, i.e. core network devices.

Specifically, taking a PS domain of a mobile communication system as an example, in 3G, an access network device is an RNC, and a core network device is an SGSN; in 4G, the access network equipment is eNB, and the core network equipment is MME; in 2G, the access network device is a BSC and the core network device is an SGSN. Taking CS domain of mobile communication system as an example, in 3G/2G, the access network device is RNC (3G)/BSC (2G), and the core network device is MSC.

In the embodiment of the present invention, an access network device sends a system message to a UE, where the system message includes identifiers of multiple PLMNs, so that the UE may determine, according to the identifiers of the multiple PLMNs, multiple PLMNs corresponding to the multiple PLMN identifiers.

Specifically, the access network device sends system information to the UE in a broadcast manner, where the system information includes identifiers of multiple PLMNs, so that the UE can obtain the identifiers of the multiple PLMNs from the system information, and the UE can determine the multiple PLMNs according to the identifiers of the multiple PLMNs.

Further, the identification of the PLMN, i.e., the PLMN id (PLMN identifier), may be represented in various forms such as numbers, letters, etc., and embodiments of the present invention are not limited thereto. Generally, the PLMN id is composed of a mobile country code MCC (mobileclumbertrycode) and a mobile network code MNC (mobilenetwork code), for example, 46000 id of a PLMN for china mobile, 46 is MCC, 000 is MNC; identity of a PLMN in china unicom is 46001, where 46 is MCC and 001 is MNC.

S402, the UE determines a plurality of PLMNs connected with the access network equipment according to the identifications of the PLMNs.

After the access network equipment sends the system message to the UE, the UE determines a plurality of PLMNs connected with the access network equipment according to the identifications of the PLMNs.

It should be noted that, the identifier of one PLMN corresponds to one PLMN, and therefore, the identifiers of multiple PLMNs correspond to multiple PLMNs.

S403, the UE selects at least two PLMNs from the PLMNs and sends a first message to the access network device, wherein the first message comprises registration request information that the UE requests registration from the at least two PLMNs respectively.

After the UE determines a plurality of PLMNs connected with the access network equipment according to the identifications of the PLMNs, the UE selects at least two PLMNs from the PLMNs.

Specifically, the UE may select at least two PLMNs from the multiple PLMNs according to a preset condition.

Optionally, the preset condition may be registration priorities of multiple PLMNs.

Specifically, the UE selects at least two PLMNs with the highest priority from the identifiers of the PLMNs according to the registration priorities of the PLMNs.

It should be noted that the registration priorities of the multiple PLMNs may be:

(1) prioritized user preferred PLMN list.

(2) Prioritized operator preferred PLMN list.

(3) A preferred PLMN list configured by the prioritized UE.

(4) A list of preferred PLMNs ranked from high to low in signal strength and/or signal quality.

Further, the UE determines the specific number of the at least two PLMNs according to the registration priorities of the plurality of PLMNs, which is determined by the specific configuration of the UE. In the embodiment of the present invention, the UE is a user equipment capable of selecting at least two PLMNs from a plurality of PLMNs, and the present invention does not limit the specific number of the at least two PLMNs.

Preferably, if the UE determines more PLMNs from the multiple PLMNs, signaling interaction between the UE and the access network device and the core network device is more, so that the network may be congested due to excessive signaling, and thus network communication is not smooth, and therefore, preferably, the UE may determine 2 to 3 PLMNs from the multiple PLMNs.

It can be understood that the UE may determine at least two PLMNs at a time and initiate network registration to the at least two PLMNs at the same time, so that the UE can improve the probability of successful network registration and shorten the network registration time in a scenario of sharing a network, thereby improving the efficiency of network registration.

Illustratively, the UE receives the PLMN1, the PLMN2, the PLMN3, the PLMN4, … … from the access network device, wherein the priorities of the PLMN1, the PLMN2, the PLMN3, the PLMN4, … … are arranged as PLMN1, PLMN2, PLMN4, PLMN3, … …, and the UE selects the highest priority PLMN1 and PLMN2 from the PLMN1, PLMN2, PLMN3, PLMN4, … … for network registration.

After the UE selects at least two PLMNs from the PLMNs, the UE sends a first message to the access network equipment, wherein the first message comprises registration request information for requesting registration from the UE to the at least two PLMNs respectively.

Optionally, the first message in the embodiment of the present invention may be an initial direct transfer message.

Further, the first message further includes an identifier of each PLMN of the at least two PLMNs, where the identifier of each PLMN corresponds to one registration request message.

It should be noted that the identifiers of at least two PLMNs sent by the UE may respectively correspond to one registration request message, where the registration request message is used to request network registration in the PLMN corresponding to the identifier of the PLMN. The UE may simultaneously send the identities of the at least two PLMNs and registration request information corresponding to the identities of the at least two PLMNs, so that the UE performs network registration in the at least two PLMNs corresponding to the identities of the at least two PLMNs.

Optionally, the correspondence between the identifiers of the at least two PLMNs and the registration request information includes:

the identifier of each PLMN in the identifiers of at least two PLMNs corresponds to one registration request message respectively; or,

the identities of a plurality of the identities of the at least two PLMNs correspond to a registration request message.

It should be noted that the registration request information sent by the UE to the at least two PLMNs may be completely the same, and in this case, the identifiers of multiple PLMNs in the identifiers of the at least two PLMNs may correspond to one registration request information. In addition, under a scenario that the access network device is shared by multiple operators and the core network device is also shared, different PLMNs of the at least two PLMNs may correspond to the same core network device, that is, the core network devices corresponding to different PLMNs of the identifiers of the at least two PLMNs may be the same; in a scenario that the access network is shared by multiple operators and the core network device is not shared, each PLMN of the at least two PLMNs corresponds to a different core network device, that is, each PLMN identifier of the at least two PLMNs corresponds to a different core network device. In the embodiment of the present invention, an example in which an identifier of each PLMN in at least two PLMN identifiers corresponds to one registration request information, and an identifier of each PLMN in at least two PLMN identifiers corresponds to one core network device is taken as an example for explanation.

Illustratively, the UE sends an initial direct transfer message to the access network device, where the initial direct transfer message carries PLMNID1 and PLMNID2, and registration request information corresponding to PLMNID1 and registration request information corresponding to PLMNID 2.

It should be noted that the identifiers of at least two PLMNs, which are obtained by the access network device and sent by the UE, may respectively correspond to one registration request message, where the registration request message is used to request network registration in the PLMN corresponding to the identifier of the PLMN. The access network device may simultaneously acquire the identities of the at least two PLMNs sent by the UE and the registration request information corresponding to the identities of the at least two PLMNs, so that the UE performs network registration in the at least two PLMNs corresponding to the identities of the at least two PLMNs.

It can be understood that the access network device may obtain the identifiers of the at least two PLMNs from the UE at one time, so that the UE performs network registration in the at least two PLMNs corresponding to the identifiers of the at least two PLMNs, and therefore, the access network device can improve the probability of successful network registration and shorten the network registration time in a network sharing scenario, thereby improving the efficiency of network registration.

Optionally, the first message received by the access network device further carries registration priorities of at least two PLMNs corresponding to the at least two PLMNs.

Further, the access network device may obtain, according to the first message, the identities of the at least two PLMNs, the registration request information, and the registration priorities of the at least two PLMNs, which are sent by the UE.

S404, the access network device sends registration request messages corresponding to at least two PLMNs to core network devices corresponding to the PLMNs respectively according to the first messages, and the registration request messages comprise registration request information corresponding to the registration request messages.

After the UE sends the first message to the access network device, the access network device sends, according to the first message, registration request messages corresponding to at least two PLMNs to core network devices corresponding to the PLMNs, where the registration request messages include registration request information corresponding to the registration request messages, and one PLMN corresponds to one core network device.

Specifically, the first message further includes identifiers of at least two PLMNs, and the UE sends, according to the identifiers of the at least two PLMNs, registration request messages corresponding to the PLMNs to core network devices corresponding to the identifiers of the at least two PLMNs, respectively.

Further, the first message also includes registration priorities of at least two PLMNs, and the access network device may send the registration request message to at least two core network devices corresponding to the at least two PLMNs according to the registration priorities of the at least two PLMNs.

Specifically, the access network device preferentially sends, to the core network device corresponding to the PLMN having the highest registration priority, the registration request message corresponding to the PLMN, among the at least two PLMNs, according to the registration priorities of the at least two PLMNs, that is, the access network device may first send, according to the registration priorities of the at least two PLMNs, the registration request message corresponding to the identifier of one PLMN to the core network device corresponding to the one PLMN, and then send, to the core network device corresponding to the other PLMN, the registration request message corresponding to the identifier of the other PLMN, where the priority of the PLMN corresponding to the identifier of the one PLMN is higher than the priority of the PLMN corresponding to the identifier of the other PLMN, and the one PLMN and the other PLMN are PLMNs among the at least two PLMNs.

Illustratively, after the access network device receives the PLMNID1 and the PLMNID2 sent by the UE, and the registration request message corresponding to the PLMNID1 and the registration request message corresponding to the PLMNID2, the access network device sends the registration request message corresponding to the PLMNID1 to the core network device corresponding to the PLMNID1, and the access network device sends the registration request message corresponding to the PLMNID2 to the core network device corresponding to the PLMNID2, wherein the PLMNID1 is used to identify the PLMN1, the PLMNID2 is used to identify the PLMN2, and the PLMN1 is higher in priority than the PLMN 2.

Further, the registration request message carries an identifier of the UE, which may be an IMSI, and the IMSI is a mark for distinguishing a mobile subscriber and is stored in the SIM card. The identity of the UE may also be a temporary identity allocated to the UE by the network, such as TMSI or P-TMSI or GUTI.

It should be noted that, if the identifier of the UE is not carried in the registration request message sent by the access network device to the core network device, the core network device may obtain the identifier of the UE from the UE through the registration request message.

Specifically, a core network device is taken as an example for explanation, the core network device sends an identifier request message to an access network device according to a registration request message, the access network device forwards the identifier request message to the UE, the UE sends an identifier response message to the access network device, and the access network device forwards the identifier response to the core network device, where the identifier response message carries an identifier of the UE.

S405, the at least two core network devices respectively determine whether to allow the UE to perform network registration in the PLMN corresponding to the at least two core network devices according to the registration request message.

After the access network device sends registration request messages corresponding to at least two PLMNs to the core network devices corresponding to the at least two PLMNs respectively according to the first message, the core network devices corresponding to the at least two PLMNs determine whether to allow the UE to perform network registration in the PLMNs corresponding to the at least two core network devices respectively according to the registration request messages.

For example, after the access network device sends the registration request message corresponding to the PLMNID1 to the core network device of the PLMN1 and the access network device sends the registration request message corresponding to the PLMNID2 to the core network device of the PLMN2, the core network device of the PLMN1 may determine whether to allow the UE to perform network registration in the PLMN1 according to the registration request message corresponding to the PLMNID1, and the core network device of the PLMN2 may determine whether to allow the UE to perform network registration in the PLMN2 according to the registration request message corresponding to the PLMNID 2. Here, PLMNID1 is used to identify PLMN1 and PLMNID2 is used to identify PLMN 2.

S406, the access network device receives a second message sent by the first core network device, where the second message includes registration acceptance information that indicates that the registration request of the UE on the first PLMN is accepted, the first core network device is a core network device corresponding to the first PLMN, and the first PLMN is one PLMN of the at least two PLMNs.

After determining whether to allow the UE to perform network registration in PLMNs corresponding to the at least two core network devices according to the registration request message, the at least two core network devices receive a second message that includes registration acceptance information and is sent by the first core network device, where the registration acceptance information is used to characterize that the registration request of the UE on the first PLMN is accepted, the first core network device is a core network device corresponding to the first PLMN, and the first PLMN is one PLMN in the at least two PLMNs.

It should be noted that the direct transfer message replied by the core network device after receiving the registration request message may include any one of registration acceptance information and registration rejection information, where the registration acceptance information is used to characterize that the accepting UE performs network registration in the corresponding PLMN, and the registration rejection information is used to characterize that the rejecting UE performs network registration in the corresponding PLMN. In the embodiment of the present invention, the direct transfer message including the registration acceptance information sent by the first core network device is the second message.

Specifically, whether the direct transfer message corresponding to the registration request message is registration acceptance information or registration rejection information is determined by the core network device corresponding to the PLMN.

Optionally, the direct transfer message carries the identifier of the UE, that is, the registration acceptance information and the registration rejection information carry the identifier of the UE.

Since the direct transfer message carries the identifier of the UE, after the first core network device sends the second message including the registration acceptance information to the access network device, the access network device may send the third message including the registration acceptance information to the UE corresponding to the identifier of the UE according to the identifier of the UE.

It can be understood that the direct transfer messages respectively sent by the at least two core network devices corresponding to the identifiers of the at least two PLMNs are asynchronous, and therefore, the access network device may sequentially obtain the direct transfer messages respectively sent by the at least two core network devices, where the direct transfer messages carry registration acceptance information or registration rejection information corresponding to the registration request information. The direct transfer message sent by the first core network device carries registration acceptance information.

Optionally, the registration acceptance information includes an identifier of the first PLMN.

Specifically, the access network device may obtain the registration acceptance information or the registration rejection information according to the direct transfer message.

Illustratively, the core network device 1 corresponding to the identity of the PLMN1 sends registration acceptance information corresponding to the registration request message to the access network device, the registration acceptance information indicating that the registration request information of the UE in the PLMN1 is accepted.

S407, the access network device receives a fourth message sent by the second core network device, where the fourth message includes registration rejection information indicating that the registration request of the UE on the second PLMN is rejected, the second core network device is a core network device corresponding to the second PLMN, and the second PLMN is a PLMN of the at least two PLMNs except the first PLMN.

After the at least two core network devices respectively determine whether to allow the UE to perform network registration in PLMNs corresponding to the at least two core network devices according to the registration request message, the access network device receives a fourth message sent by the second core network device, where the fourth message includes registration rejection information indicating that the registration request of the UE in the second PLMN is rejected, the second core network device is a core network device corresponding to the second PLMN, and the second PLMN is a PLMN other PLMN in the at least two PLMNs than the first PLMN.

It should be noted that the direct transfer message sent by one core network device may include any one of registration acceptance information and registration rejection information, where the registration acceptance information is used to characterize that the accepting UE performs network registration in the corresponding PLMN, and the registration rejection information is used to characterize that the rejecting UE performs network registration in the corresponding PLMN.

Specifically, the direct transfer message corresponding to the registration request message includes registration acceptance information or registration rejection information, and is determined by the core network device corresponding to the PLMN.

Optionally, the direct transfer message carries an identifier of the UE.

Since the direct transfer message carries the identifier of the UE, after the second core network device sends the fourth message including the registration rejection information to the access network device, the access network device may send the fifth message including the registration rejection information to the UE corresponding to the identifier of the UE according to the identifier of the UE.

It can be understood that the direct transfer messages sent by the at least two core network devices corresponding to the identifiers of the at least two PLMNs are asynchronous, so that the access network device may sequentially obtain the direct transfer messages sent by the at least two core network devices, respectively, and the direct transfer message sent by the second core network device carries the registration rejection information.

Optionally, the registration rejection information includes an identifier of the second PLMN.

Optionally, the registration rejection information included in the fourth message and used for indicating that the registration request of the UE on the second PLMN is rejected is specifically: the fourth message comprises a registration rejection message which indicates that the registration request of the UE on the second PLMN is rejected. Similarly, it can be deduced that the registration rejection information in the fifth message may specifically be a registration rejection message.

Specifically, the access network device may obtain the registration rejection message according to the direct transfer message.

It should be noted that the second PLMN refers to a PLMN to which the second core network device corresponding to the second PLMN sends the fourth message including the registration rejection information.

Illustratively, the core network device 2 corresponding to the PLMN2 identifier sends a registration reject message corresponding to the registration request message to the access network device, which registration reject message characterizes that the registration request of the UE in the PLMN1 is rejected.

It should be noted that S406 and S407 are two parallel steps after S405, and the execution order of S406 and S407 is not limited in this embodiment of the present invention, that is, after S405, S406 may be executed first, and then S407 is executed, or S407 may be executed first, and then S406 is executed.

S408, the access network equipment sends a third message to the UE according to the second message, wherein the third message comprises registration acceptance information.

After the access network device receives the second message which is sent by the first core network device and includes the registration acceptance information, the access network device sends a third message to the UE according to the second message, where the third message includes the registration acceptance information, that is, the access network device forwards the second message which is sent by the first core network device and includes the registration acceptance information, so that the UE completes registration in the first PLMN according to the registration acceptance information in the second message.

Specifically, the access network device forwards the registration acceptance information sent by the first core network device to the UE according to the identifier of the UE.

It should be noted that, after the at least two core network devices respectively determine whether to allow the UE to perform network registration in the PLMNs respectively corresponding to the at least two core network devices according to the respective registration request messages, the at least two core network devices respectively send the direct transfer message to the access network device.

Wherein, the direct transfer message carries the identifier of the PLMN.

Specifically, the direct transfer message sent by the core network device may further include a registration status indication, where the direct transfer message sent by the first core network device carries an identifier of the first PLMN and the first registration status indication, and the first registration status indication is used to indicate that the registration request of the UE on the first PLMN is accepted, that is, the UE successfully registers on the first PLMN.

Specifically, the access network device may obtain the first registration status indication and the identifier of the first PLMN according to the direct transfer message sent by the first core network device.

More specifically, the access network device sends the third message to the UE according to the first registration status indication, that is, the access network device sends the registration acceptance message to the UE according to the first registration status indication.

Further, if the UE receives an authentication request message sent by the second core network device after receiving registration acceptance information sent by the access network device and indicating that the UE successfully registers in the first PLMN, the UE sends an authentication failure message to the second core network device; or,

if the UE receives an authentication request message sent by a second core network device after receiving registration acceptance information sent by the access network device and indicating that the UE is successfully registered in the first PLMN, the UE does not reply to the authentication request message, the second core network device is a core network device corresponding to a second PLMN, and the second PLMN is a PLMN of the at least two PLMNs except the first PLMN.

It should be noted that S408 is a step after S406, and in the embodiment of the present invention, after S406, S408 may be executed.

S409, the access network equipment sends a fifth message to the UE, wherein the fifth message comprises registration rejection information.

After the access network device receives the fourth message sent by the second core network device, the access network device sends a fifth message to the UE, where the fifth message includes registration rejection information.

Specifically, the access network device forwards a fifth message including registration rejection information, which is sent by the second core network device, to the UE according to the identifier of the UE.

It should be noted that S409 is a step after S407, and in the embodiment of the present invention, after S407, S409 may be executed. And after performing S407 first and then S406, S410 may replace S408 and S409 to provide another method for network registration.

S410, the access network equipment sends a third message to the UE, wherein the third message comprises registration acceptance information and registration rejection information.

The access network equipment receives a second message sent by the first core network equipment, and after the access network equipment receives a fourth message sent by the second core network equipment, the access network equipment sends a third message to the UE, wherein the third message comprises the registration acceptance information and the registration rejection information, so that the UE completes registration in the first PLMN according to the registration acceptance information, and the UE knows that registration is not completed in the second PLMN according to the registration rejection information.

Specifically, if the access network device receives a fourth message including registration rejection information sent by the second core network device before receiving the second message including registration acceptance information sent by the first core network device, the access network device waits for receiving the second message including registration acceptance information sent by the first core network device, and then sends a third message to the UE, where the third message carries the registration acceptance information and the registration rejection information.

Particularly, the direct transfer message sent by the core network device may further include a registration state indication, where the direct transfer message sent by the first core network device carries the identifier of the first PLMN and the first registration state indication, and the direct transfer message sent by the second core network device carries the identifier of the second PLMN and the second registration state indication. The access network device may receive a first registration status indication sent by the first core network device and a second registration status indication sent by the first core network device, where the first registration status indication is used to indicate that a registration request of the UE on the first PLMN is accepted, that is, the registration of the UE on the first PLMN is successful; the second registration status indication is used to indicate that the registration request of the UE on the second PLMN is rejected, i.e. the registration of the UE on the second PLMN fails.

Specifically, the access network device may obtain the first registration state indication and the identifier of the first PLMN according to a direct transfer message sent by the first core network device, and may also obtain the second registration state indication and the identifier of the second PLMN according to a direct transfer message sent by the second core network device.

The third message in the embodiment of the present invention may further include registration rejection information, that is, the third message carries registration acceptance information and registration rejection information.

Optionally, the third message may be a downlink direct transfer message.

Specifically, the access network device sends the third message to the UE according to the first registration status indication and the second registration status indication.

That is, the access network device sends a downlink direct transfer message to the UE according to the UE identifier and the registration status indication, where the downlink direct transfer message includes registration acceptance information and registration rejection information.

Specifically, the access network device sends the downlink direct-transfer message to the UE corresponding to the UE identifier according to the UE identifier.

Optionally, the registration acceptance information includes an identifier of the first PLMN and registration acceptance information of the first PLMN; the registration rejection information includes an identifier of the second PLMN and registration rejection reason information of the second PLMN.

Particularly, some access network devices may not be able to analyze the downlink direct transfer message, but may analyze the registration status indication, and therefore, the access network device that may analyze the registration status indication may obtain the registration condition of the PLMN through the registration status indication, so that only the downlink direct transfer message including the registration acceptance information may be sent to the UE according to the setting or configuration of the access network device itself, or the access network device that may analyze the registration status indication sends all downlink direct transfer messages (including the registration acceptance information) before the downlink direct transfer message including the registration acceptance information is received to the UE.

Specifically, when a first registration state indication in the registration state indications acquired by the access network device indicates that the UE has accepted a registration request in the first PLMN, the access network device generates a third message according to a first direct transfer message corresponding to the first registration state indication, or according to the first direct transfer message corresponding to the first registration state indication and all direct transfer messages (including the first direct transfer message) received before the first direct transfer message, and sends the third message to the UE corresponding to the UE identifier according to the UE identifier.

That is, if the access network device receives the fourth message including the registration rejection information sent by the second core network device before receiving the second message including the registration acceptance information sent by the first core network device, the access network device waits to receive the second message including the registration acceptance information sent by the first core network device and then sends the third message to the UE. Specifically, the access network device receives a second registration status indication sent by the second core network device, where the second registration status indication is used to indicate that the UE is rejected in the second PLMN registration request, the access network device waits to receive a first registration status indication sent by the first core network device, and if the first registration status indication indicates that the UE is accepted in the first PLMN registration request, the access network device sends a third message to the UE, where the third message includes registration acceptance information sent by the first core network device, or the third message includes registration rejection information sent by the second core network device and registration acceptance information sent by the first core network device.

It can be understood that, on one hand, when a first registration state indication in the registration state indications acquired by the access network device indicates that the UE accepts the registration request in the first PLMN, the access network device may send registration acceptance information corresponding to the first registration state indication to the UE according to the identity of the UE, and does not send registration rejection information of the UE in the second PLMN to the UE, so that the number of message pieces or the message length between the access network device and the UE is reduced, and a blocking phenomenon caused by more signaling during communication can be effectively avoided. On the other hand, when the first registration state indication in the registration state indications acquired by the access network device indicates that the UE is registered and accepted in the first PLMN, the access network device generates a third message according to the registration acceptance information corresponding to the first registration state indication and the registration rejection information received before the registration acceptance message, and sends the third message to the UE corresponding to the UE identifier according to the UE identifier, where the third message includes the registration rejection information sent by the second core network device and the registration acceptance information sent by the first core network device, so that the number of signaling between the access network device and the UE is reduced, thereby effectively avoiding a blocking phenomenon caused by more signaling during communication, and enabling the UE to know that the second PLMN rejects the registration request of the UE, so that the second PLMN with the rejected registration request can be preferentially excluded when the UE performs network registration next time, so as to improve the efficiency of network registration of the UE.

For example, assuming that the UE performs network registration in PLMNID1, PLMNID2, and PLMNID3 at the same time, the access network device first receives direct transfer message 1 of the PLMN corresponding to PLMNID1 sent by core network device 1 and registration status indication 1 in the direct transfer message, and if the registration status indication 1 indicates that the registration request of the UE in the PLMN corresponding to PLMNID1 is rejected, the access network stores the direct transfer message 1. Then, the access network device receives the direct transfer message 2 of the PLMN corresponding to the PLMNID2 sent by the core network device 2 and the registration status indication 2 in the direct transfer message, where the registration status indication 2 indicates that the registration request of the UE in the PLMN corresponding to the PLMNID2 is accepted, and then the access network may send the direct transfer message 2 to the UE according to the identity of the UE, or, the access network may generate the downlink direct transfer message 3 according to the direct transfer message 1 and the direct transfer message 2, and the downlink direct transfer message 3 carries the registration acceptance information and the registration rejection information in the direct transfer message 1 and the direct transfer message 2, and sends the downlink direct transfer message 3 to the UE according to the identity of the UE.

S411, the UE completes the registration in the first PLMN according to the third message.

And after the access network equipment sends the third message to the UE, the UE performs network registration in the first PLMN according to the third message which is sent by the access network equipment and comprises registration acceptance information.

Specifically, the UE may perform network registration in the PLMN corresponding to the identifier of the PLMN to which the registration request is accepted according to the registration acceptance information in the third message.

It should be noted that the downlink direct transfer message received by the UE may include registration acceptance information, and may also include registration rejection information, that is, the UE may receive the downlink direct transfer message sent by the first PLMN core network device through the access network device, or may receive the downlink direct transfer message sent by the second PLMN core network device through the access network device, and the UE can perform network registration only in the first PLMN whose downlink direct transfer message is registration acceptance information, namely, if the downlink direct transfer message carries registration acceptance information and registration rejection information, the UE performs network registration in the first PLMN where the registration request information is accepted, and not performing network registration in the second PLMN from which the registration request information is rejected, and when performing network registration next time, and the UE avoids network registration in the second PLMN from which the registration request information is rejected according to the reason information of registration rejection of the second PLMN from which the registration request information is rejected.

For example, it is assumed that the UE receives a downlink direct transfer message including registration rejection information corresponding to the PLMN1, and the UE receives a downlink direct transfer message including registration acceptance information corresponding to the PLMN 2. And the UE performs network registration in the first PLMN where the registration request information is accepted according to the downlink direct transfer message, that is, performs network registration in the PLMN 2.

It should be noted that, if the downlink direct transmission messages respectively sent by the at least two core network devices to the access network device are registration rejection information, the UE performs the network registration again, and in the network registration process of this time, the identifier of the at least two PLMNs determined by the UE is the identifier of the PLMN with the highest priority except the identifier of the PLMN selected last time.

For example, after the UE is rejected the registration request in PLMN1 and PLMN2, the UE receives PLMN1, PLMN2, PLMN3, PLMN4, PLMN5, … … again from the access network device, wherein the following are arranged according to priority: PLMN1, PLMN2, PLMN4, PLMN3, PLMN5, … …, when the UE performs network registration again, the UE can select to perform network registration from PLMN4 and PLMN 3.

It can be understood that, in the network registration method provided in the embodiment of the present invention, the UE performs network registration in a PLMN, where the PLMN is not necessarily the PLMN that has the highest priority among the identifiers of at least two PLMNs determined by the UE, but is the PLMN that receives the network registration by the UE first, so that the efficiency of the network registration by the UE can be improved.

Further, as shown in fig. 5, taking a first core network device as an example, the detailed description is made on whether the core network device determines, according to the registration request message, whether to allow the UE to perform network registration in the PLMN corresponding to the first core network device, where the first core network device is one of the at least two core network devices corresponding to the first PLMN, specifically, as in S501-S505:

s501, the first core network device sends an authentication request message to the UE according to the identity of the UE, and the authentication request message is used for determining whether the UE is legal or not.

After receiving a registration request message from a UE, a first core network device sends an authentication request message to the UE corresponding to the UE identifier according to the registration request message and the UE identifier carried in the registration request message, so as to determine whether the UE is a valid UE.

Specifically, the authentication request message is used to request an authentication response message from the UE, so as to determine whether the UE is a valid UE.

It should be noted that, the authentication request message is used to determine whether the UE is a valid UE, and in the communication field, only when the first core network device determines that the UE is a valid UE, the first core network device may allow the UE to perform network registration in the first PLMN corresponding to the first core network device, so that when the first core network device receives the registration request message from the UE, it may first determine whether the UE is a valid UE.

S502, the UE sends an authentication response message corresponding to the authentication request message to the first core network device, wherein the authentication response message comprises an authentication success message or an authentication failure message.

After the first core network equipment sends the authentication request message to the UE according to the identity of the UE, the UE sends an authentication response message corresponding to the authentication request message to the first core network equipment after receiving the authentication request message.

It should be noted that, after the first core network device sends the authentication request message, only when the UE replies the authentication request message, that is, sends an authentication response message to the first core network device, where the authentication response message includes correct authentication response information, the first core network device will perform a subsequent network registration process.

In particular, the communication or signaling interaction between the UE and the first core network device needs to be implemented by forwarding signaling through the access network device.

Optionally, the authentication response message may include an authentication success message and an authentication failure message. Here, the authentication success message contains correct authentication response information; the authentication failure message does not contain correct authentication response information and/or may carry information denying authentication.

It should be noted that, after the first core network device determines to allow the UE to perform network registration in the first PLMN corresponding to the first core network device, if the UE receives the authentication request message sent by the second core network device, the authentication response message sent by the UE to the second core network device is an authentication failure message, so that the second core network device can directly determine not to allow the UE to perform network registration in the second PLMN corresponding to the second core network device, thereby shortening the time for the UE to perform network registration, and improving the efficiency for the UE to perform network registration. The second core network device is a core network device corresponding to a second PLMN in the at least two PLMNs.

Specifically, the UE receives an authentication request message sent by the second core network device, and detects whether a downlink direct transfer message sent by the first core network device through the access network device is received. If the UE detects that the first core network device sends a downlink direct transfer message through the access network device, and the downlink direct transfer message includes registration acceptance information indicating that registration in the first PLMN corresponding to the first core network device is accepted, the UE sends an authentication failure message to the second core network device, so that the second core network device rejects the UE to perform network registration in the second PLMN corresponding to the second core network device according to the received authentication failure message, or the UE does not reply to the received authentication request message sent by the second core network device, that is, does not send an authentication response message, so that the second core network device rejects the UE to perform network registration in the second PLMN corresponding to the second core network device after waiting for the authentication response message to be overtime. If the UE does not detect the downlink direct transfer message sent by the first core network device through the access network device, or if the UE detects the downlink direct transfer message sent by the first core network device and the downlink direct transfer message includes registration rejection information indicating that the registration request in the first PLMN corresponding to the first core network device is rejected, the UE sends an authentication success message to the second core network device, so that the second core network device allows the UE to perform network registration in a second PLMN corresponding to the second core network device according to the authentication success message.

S503, if the authentication response message is an authentication success message, the first core network device sends a second location update request message to the HLR, where the second location update request message is used to characterize that the UE requests registration or location update in the first PLMN corresponding to the first core network device.

After the UE sends an authentication response message corresponding to the authentication request message to the first core network device, if the authentication response message sent by the UE is an authentication success message, that is, the authentication success message includes correct authentication response information, the first core network device sends a second location update request message to the HLR, where the second location update request message is used to represent that the UE requests registration or location update in the first PLMN corresponding to the first core network device.

The HLR is mainly used to manage a database of the mobile subscriber, and store subscription data of the managed mobile subscriber and location information of the mobile subscriber. The HLR and the first core network device may communicate through signaling, and specifically, the first core network device may communicate with the HLR to complete a location update and a subscription data acquisition process in a network registration process of the UE in the first PLMN.

Further, if the authentication response message sent by the UE is an authentication failure message, that is: and if the authentication failure message does not contain correct authentication response information and/or carries information for rejecting authentication, the first core network equipment rejects the UE to perform network registration in the first PLMN.

S504, the HLR updates the position information of the UE according to the second position updating request message, and sends the inserting subscription data message to the first core network equipment.

After the first core network equipment sends the second location updating request message to the HLR, the HLR updates the location information of the UE according to the second location updating request message and sends the inserting subscription data message to the first core network equipment.

Further, the first core network device determines whether to allow the UE to register in the first PLMN or to update the location according to subscription data included in the subscription data inserting message sent by the HLR. For example, if the subscription data indicates that the UE is prohibited from accessing the first PLMN, the first core network device rejects registration or location update of the UE in the first PLMN.

And the second location update request message carries the information of the first core network equipment and the identity of the UE.

Specifically, the second location update request message carries information of the first core network device and an identifier of the UE. And the HLR acquires the information of the first core network equipment and the identifier of the UE according to the second position updating request message sent by the first core network equipment, acquires the subscription data of the UE according to the identifier of the UE, and finally sends the subscription data of the UE to the first core network equipment according to the information of the first core network equipment.

S505, the first core network device determines whether to allow the UE to perform network registration in the first PLMN according to the inserting subscription data message of the UE, and sends an inserting subscription data confirmation message to the HLR.

After the HLR sends the subscription data inserting message to the first core network equipment according to the second location updating request message, the first core network equipment determines whether the UE is allowed to register or update the location in the first PLMN or not according to the subscription data inserting message, and sends a subscription data inserting confirmation message to the HLR.

It should be noted that the inserting the subscription data confirmation message may include a successful inserting the subscription data message and a denying inserting the subscription data message, where the successful inserting the subscription data message is used to characterize that the first core network device allows the UE to register or perform location update in the first PLMN corresponding to the first core network device, and the denying inserting the subscription data message is used to characterize that the first core network device does not allow the UE to register or perform location update in the first PLMN corresponding to the first core network device.

S506, if the signed data insertion confirmation message is a successful signed data insertion confirmation message, the HLR stores the location information successfully registered by the UE in the first PLMN, and sends a location update confirmation message to the first core network device.

The first core network equipment determines whether the UE is allowed to perform network registration in the first PLMN according to the inserting subscription data message of the UE, and sends an inserting subscription data confirmation message to the HLR, and then the HLR stores the position information of the UE successfully registered in the first PLMN and sends a position updating confirmation message to the first core network equipment if the inserting subscription data confirmation message is a successful inserting subscription data message.

Further, if the HLR receives the first location update request sent by the second core network device after sending the location update confirmation message to the first core network device, the HLR rejects the first location update request, so as to avoid the HLR from erroneously modifying the location information successfully registered by the UE in the first PLMN. As shown in fig. 6, specifically as S601-S605:

s601, receiving, by the HLR, a second location update request message sent by the first core network device, where the second location update request message is used to characterize that the UE requests registration or location update in a first PLMN corresponding to the first core network device, where the first PLMN is one of at least two PLMNs, and the UE requests registration from the at least two PLMNs through the same access network device.

S602, the HLR sends a subscription data insertion request message to the first core network device according to the second location updating request message, and determines whether to allow the UE to register in the first PLMN or update the location.

S603, the HLR receives an insert subscription data confirm message sent by the first core network device, where the insert subscription data confirm message is used to characterize that the registration request or the location update request of the UE in the first PLMN corresponding to the first core network device is accepted.

Specifically, the first core network device determines whether to allow the UE to register in the first PLMN or to update the location according to the subscription data insertion message, and then sends a subscription data insertion confirmation message to the HLR. The HLR receives the subscription data insertion confirmation message sent by the first core network device, and if the subscription data insertion confirmation message is a successful subscription data insertion confirmation message, the HLR stores the location information of the successful registration of the UE in the first PLMN, and sends a location update confirmation message to the first core network device, where the location update confirmation message is used to receive the second location update request message sent by the first core network device in step S601.

Further, the HLR receives a second location update request message sent by the first core network device, where the second location update request message is used to characterize that the UE requests registration or location update in the first PLMN corresponding to the first core network device, and the HLR sends subscription data of the UE to the first core network device according to the second location update request message, so that the first core network device determines whether to allow the UE to register or location update in the first PLMN according to the subscription data of the UE.

S604, if the subscription data inserting confirmation message is a successful subscription data inserting message, the HLR stores the position information successfully registered by the UE in the first PLMN, and sends a position updating confirmation message to the first core network device.

After receiving the subscription data insertion confirmation message sent by the first core network device, if the subscription data insertion confirmation message is a successful subscription data insertion confirmation message, the HLR stores the location information successfully registered by the UE in the first PLMN, and sends a location update confirmation message to the first core network device.

Specifically, after the UE performs network registration in a first PLMN corresponding to a first core network device, that is, the HLR sends a location update confirmation message to the first core network device, or after the HLR stores location information of the UE successfully registered in the first PLMN, if the HLR receives a first location update request message sent by a second core network device, the HLR rejects the first location update request message of the second core network device according to the location update confirmation message sent to the first core network device or according to the stored location information of the UE successfully registered in the first PLMN, wherein the location update confirmation message is used for indicating that the UE requests registration or location update in the first PLMN corresponding to the first core network device is accepted or the UE requests registration or location update in a second PLMN corresponding to the second core network device is accepted, therefore, the wrong operation indication of the UE which is subjected to network registration is avoided, and the efficiency of the network registration of the UE in the PLMN is improved.

S605, within a preset time, if receiving a first location update request message sent by a second core network device, the HLR rejects to accept the first location update request message according to a location update confirmation message or stored location information of successful registration of the UE in the first PLMN, where the first location update request message is used to characterize that the UE requests registration or location update in a second PLMN corresponding to the second core network device.

Specifically, after sending a location update confirmation message to a first core network device, an HLR starts a timer, the timing time of the timer is preset time, and within the timing time of the timer, if a first location update request message sent by a second core network device is received, the HLR rejects to accept the first location update request message according to the location update confirmation message or stored location information of successful registration of the UE in a first PLMN, where the first location update request message is used to represent that the UE requests registration or location update in a second PLMN corresponding to the second core network device.

Specifically, the preset time may be set by a designer according to an actual situation, for example, 30 seconds, and the setting of the preset time may be implemented by configuring a timer in the HLR, which is not limited in the present invention. The starting time point of the preset time is after the HLR sends the location update confirmation message to the first core network device, that is, the starting time point of the timer is after the HLR sends the location update confirmation message to the first core network device, and the timing time of the timer is the preset time.

In the network registration method provided by the embodiment of the present invention, the access network device receives registration request information sent by the UE and requesting registration to at least two PLMNs, and the access network device sends a registration request message corresponding to the PLMN to the core network devices corresponding to the at least two PLMNs according to the registration request information, and the access network device receives a second message including registration acceptance information sent by the first core network device, and finally, the access network device sends a third message including the registration acceptance information to the UE, so that the UE completes registration in the first PLMN according to the registration acceptance information in the third message. By the scheme, the access network equipment can receive the registration request information respectively corresponding to the at least two PLMNs sent by the UE at one time and send the registration request information respectively corresponding to the at least two PLMNs to the corresponding core network equipment, so that the core network equipment respectively corresponding to the at least two PLMNs can respectively perform the network registration process of the UE in the at least two PLMNs, the probability of successful network registration can be improved under the scene of sharing the network, the network registration time can be shortened, and the network registration efficiency can be improved.

EXAMPLE III

As shown in fig. 7, an embodiment of the present invention provides an access network device 1, where the access network device 1 may include:

a receiving unit 10, configured to receive a first message sent by a UE, where the first message includes registration request information for requesting registration from at least two PLMNs by the UE.

A sending unit 11, configured to send, according to the first message received by the receiving unit 10, registration request messages corresponding to the at least two PLMNs to core network devices corresponding to the at least two PLMNs, where the registration request messages include registration request information corresponding to the registration request messages.

The receiving unit 10 is further configured to receive a second message sent by a first core network device, where the second message includes registration acceptance information that the registration request of the UE on the first PLMN is accepted, the first core network device is a core network device corresponding to the first PLMN, and the first PLMN is one PLMN in the at least two PLMNs.

The sending unit 11 is further configured to send a third message to the UE according to the second message received by the receiving unit 10, where the third message includes the registration acceptance information received by the receiving unit 10, so that the UE completes registration in the first PLMN according to the third message.

Optionally, the receiving unit 10 is further configured to receive a fourth message sent by a second core network device after the sending unit 11 sends the registration request messages corresponding to the PLMNs to the core network devices corresponding to the at least two PLMNs respectively according to the first message, where the fourth message includes registration rejection information indicating that the registration request of the UE on the second PLMN is rejected, the second core network device is the core network device corresponding to the second PLMN, and the second PLMN is a PLMN of the at least two PLMNs except for the first PLMN.

Optionally, the sending unit 11 is further configured to send a fifth message to the UE after the receiving unit 10 receives registration rejection information sent by the second core network device, where the fifth message includes the registration rejection information.

Optionally, the third message sent by the sending unit 11 further includes the registration rejection information received by the receiving unit 10.

Optionally, the sending unit 11 is further configured to, if the receiving unit 10 receives the fourth message sent by the second core network device before the receiving unit 10 receives the second message sent by the first core network device, wait for the receiving unit 10 to receive the second message sent by the first core network device, and send the third message to the UE.

Optionally, the second message received by the receiving unit 10 further includes a first registration status indication, where the first registration status indication is used to indicate that the registration request of the UE on the first PLMN is accepted.

The sending unit 11 is specifically configured to send the third message to the UE according to the first registration status indication received by the receiving unit 10.

Optionally, the fourth message received by the receiving unit 10 further includes a second registration status indication, where the second registration status indication is used to indicate that the UE is rejected in the second PLMN registration request.

The sending unit 11 is specifically configured to send the third message to the UE after the receiving unit 10 receives the second message sent by the first core network device according to the second registration status indication received by the receiving unit 10.

Optionally, the first message received by the receiving unit 10 further includes registration priorities of the at least two PLMNs.

The sending unit 11 is specifically configured to preferentially send, according to the registration priority of the at least two PLMNs received by the receiving unit 10, a registration request message corresponding to a PLMN with a highest registration priority to a core network device corresponding to the PLMN in the at least two PLMNs.

Optionally, the sending unit 11 is further configured to send system information to the UE before the receiving unit 10 receives the first message sent by the UE, so that the UE selects the at least two PLMNs from the multiple PLMNs according to identifiers of the multiple PLMNs included in the system information.

Optionally, the registration request information that the UE requests registration from at least two PLMNs respectively in the first message received by the receiving unit 10 specifically includes: the first message includes registration request messages for requesting registration from the UE to the at least two PLMNs, respectively. Wherein,

the sending unit 11 is specifically configured to send, according to registration request messages that the UE requests registration to the at least two PLMNs respectively, the registration request messages corresponding to the at least two PLMNs to send registration request messages corresponding to the at least two PLMNs to core network devices corresponding to the at least two PLMNs, where the registration request messages are included in the first message received by the receiving unit 10.

The second message received by the receiving unit 10 includes registration acceptance information that indicates that the registration request of the UE on the first PLMN is accepted, specifically: the second message comprises a registration acceptance message which indicates that the registration request of the UE on the first PLMN is accepted.

The third message sent by the sending unit 11, which includes the registration acceptance information, specifically is: the third message includes the registration acceptance message.

Optionally, the fourth message received by the receiving unit 10 includes registration rejection information that indicates that the registration request of the UE on the second PLMN is rejected, specifically: the fourth message comprises a registration rejection message which indicates that the registration request of the UE on the second PLMN is rejected.

It should be noted that the access network device 1 provided in the embodiment of the present invention may be an eNB, an RNC, or a BSC, and the present invention is not limited.

The embodiment of the invention provides an access network device, which receives registration request information sent by UE and requesting registration to at least two PLMNs respectively through the access network device, and the access network device sends the registration request information corresponding to the PLMN to core network devices corresponding to the at least two PLMNs respectively according to the registration request information, receives a second message which is sent by a first core network device and comprises registration acceptance information, and finally sends a third message which comprises the registration acceptance information to the UE through the access network device, so that the UE completes registration in the first PLMN according to the registration acceptance information in the third message. By the scheme, the access network equipment can receive the registration request information respectively corresponding to the at least two PLMNs sent by the UE at one time and send the registration request information respectively corresponding to the at least two PLMNs to the corresponding core network equipment, so that the at least two core network equipment respectively corresponding to the at least two PLMNs can respectively perform the network registration process of the UE in the at least two PLMNs, the probability of successful network registration can be improved in the scene of network sharing, the network registration time can be shortened, and the network registration efficiency can be improved.

As shown in fig. 8, an embodiment of the present invention further provides an HLR2, where the HLR2 may include:

a receiving unit 20, configured to receive a second location update request message sent by a first core network device, where the second location update request message is used to characterize that a UE requests registration or location update in a first PLMN corresponding to the first core network device, where the first PLMN is one PLMN of at least two PLMNs, and the UE requests registration from the at least two PLMNs through a same access network device.

A sending unit 21, configured to send, to the first core network device, a location update confirmation message corresponding to the second location update request message received by the receiving unit 20.

A rejecting unit 22, configured to reject, within a preset time after the sending unit 21 sends the location update confirmation message, a first location update request message sent by a second core network device if the first location update request message is received, where the first location update request message is used to represent that the UE requests registration or location update in a second PLMN corresponding to the second core network device.

Specifically, the rejecting unit 22 may reject the first location update request message according to the location update confirmation message, and may reject the first location update request message according to the location information stored in the HLR and successfully registered by the UE in the first PLMN.

Optionally, as shown in fig. 9, the HLR2 further includes an enabling unit 24.

The starting unit 24 is configured to start a timer, where the timing time of the timer is the preset time.

The rejecting unit 22 is specifically configured to reject the first location update request message sent by the second core network device if the first location update request message is received within the timing time of the timer started by the starting unit 24.

Optionally, the second location update request message received by the receiving unit 20 carries information of the first core network device and an identifier of the UE.

As shown in fig. 10, the HLR2 further includes an acquiring unit 23.

The obtaining unit 23 is configured to obtain the information of the first core network device and the identifier of the UE according to the second location update request message received by the receiving unit 20, and obtain subscription data of the UE according to the identifier of the UE.

The sending unit 21 is further configured to send, according to the information of the first core network device acquired by the acquiring unit 23, the subscription data of the UE acquired by the acquiring unit 23 to the first core network device.

It should be noted that the rejecting unit 22 rejects accepting the first location update request message, so that the sending unit 21 sends the rejection first location update request message to the core network device, and therefore, the rejecting unit 22 is connected to the sending unit 21.

The embodiment of the present invention further provides an HLR, where the HLR transmits a second location update request message to a first core network device, where the second location update request message is used to indicate that a UE requests registration or location update in a first PLMN corresponding to the first core network device, and the HLR transmits a location update confirmation message corresponding to the second location update request message to the first core network device, and if the HLR receives a first location update request message transmitted by the second core network device within a preset time after transmitting the location update confirmation message, the HLR rejects the first location update request message. By the scheme, when receiving the first location updating request message from the second core network device in the network registration process, the HLR can firstly judge whether the UE has already performed network registration and then determine whether the first location updating is performed so as to complete the network registration process effectively and quickly.

As shown in fig. 11, an embodiment of the present invention further provides a UE3, where the UE3 may include:

a sending unit 30, configured to send a first message to an access network device, where the first message includes registration request information for requesting registration to at least two PLMNs, respectively.

A receiving unit 31, configured to receive a third message sent by the access network device, where the third message includes registration acceptance information, where the registration acceptance information indicates that a registration request in a first PLMN is accepted, the third message is sent to the access network device by a first core network device, the first core network device is a core network device corresponding to the first PLMN, and the first PLMN is one PLMN in the at least two PLMNs.

A registering unit 32, configured to complete registration in the first PLMN according to the third message received by the receiving unit 31.

If there is no registration request information sent by the sending unit 30 to the access network device, the access network device does not send the third message to the receiving unit 31, and the receiving unit 31 is connected to the sending unit 30.

Optionally, as shown in fig. 12, the UE3 further includes a reply unit 33.

The sending unit 30 is further configured to, after the receiving unit 31 receives the third message sent by the access network device, send an authentication failure message to the second core network device if the receiving unit 31 receives an authentication request message sent by the second core network device; or,

the replying unit 33 is configured to not reply the authentication request message if the receiving unit 31 receives the authentication request message sent by the second core network device, where the second core network device is a core network device corresponding to a second PLMN, and the second PLMN is a PLMN, except for the first PLMN, in the at least two PLMNs.

Optionally, as shown in fig. 13, the UE3 further includes a determining unit 34 and a selecting unit 35.

The receiving unit 31 is further configured to receive system information sent by an access network device before the first message is sent to the access network device, where the system information includes identifiers of multiple PLMNs.

The determining unit 34 is configured to determine, according to the identifiers of the multiple PLMNs received by the receiving unit 31, the multiple PLMNs connected to the access network device.

The selecting unit 35 is configured to select the at least two PLMNs from the multiple PLMNs determined by the determining unit 34.

Optionally, the selecting unit 35 is specifically configured to select the at least two PLMNs from the multiple PLMNs determined by the determining unit 34 according to a preset condition.

Optionally, the preset condition includes registration priorities of the PLMNs.

The selecting unit 35 is specifically configured to select the at least two PLMNs with the highest priority from the multiple PLMNs determined by the determining unit 34 according to the registration priorities of the multiple PLMNs.

Optionally, the first message sent by the sending unit 30 includes registration priorities of the at least two PLMNs.

Optionally, the registration request information sent by the sending unit 11 is specifically a registration request message, and the registration acceptance information received by the receiving unit 10 is specifically a registration acceptance message.

It should be noted that the UE3 provided in the embodiment of the present invention may be a communicable electronic device such as a mobile phone or a computer, and the present invention is not limited thereto.

The embodiment of the present invention further provides a UE, where a first message is sent to an access network device by the UE, the first message includes registration request information requesting registration to at least two PLMNs, respectively, and the UE receives a third message sent by the access network device, the third message includes registration acceptance information, the third message including the registration acceptance information is sent to the access network device by a first core network device, the first core network device is a core network device corresponding to the first PLMN, the first PLMN is one PLMN of the at least two PLMNs, and the UE completes registration in the first PLMN according to the third message including the registration acceptance information. According to the scheme, the UE can send the registration request information corresponding to the at least two PLMNs to the access network equipment at one time, so that the access network equipment can send the registration requests corresponding to the at least two PLMNs to the at least two core network equipment to request the UE to try to perform network registration in the at least two PLMNs at one time, and therefore the UE can improve the probability of successful network registration and shorten the network registration time under the scene of network sharing, and the network registration efficiency is improved.

Example four

As shown in fig. 14, an embodiment of the present invention provides an access network device, corresponding to a network registration method on an access network side, where the access network device may include: a receiver 13, a transmitter 14, a processor 15 and a memory 16, wherein the receiver 13, the transmitter 14 and the memory 16 are all connected with the processor 15, for example, the transmitter 14, the receiver 13 and the memory 16 may all be connected with the processor 15 through a bus.

The receiver 13 and the transmitter 14 may be integrated together to form a transceiver, which may have one or more antennas.

The memory 16 is used to store executable program code, including computer operating instructions. The memory 16 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.

Processor 15 may be a central processing unit, or a particular integrated circuit, or one or more integrated circuits configured to implement embodiments of the present invention.

Specifically, the receiver 13 may be configured to receive a first message sent by the UE, where the first message includes registration request information for requesting registration from the UE to at least two PLMNs, respectively; the transmitter 14 is configured to transmit, according to the first message received by the receiver 13, registration request messages corresponding to the at least two PLMNs to core network devices corresponding to the PLMNs, respectively; the receiver 13 is further configured to receive a second message sent by a first core network device, where the second message includes registration acceptance information that indicates that a registration request of the UE on a first PLMN is accepted, the first core network device is a core network device corresponding to the first PLMN, and the first PLMN is one PLMN of the at least two PLMNs; the transmitter 14 is further configured to send a third message to the UE according to the second message received by the receiver 13, where the third message includes the registration acceptance information received by the receiver 13, so that the UE completes registration in the first PLMN according to the third message; the memory 16 may be configured to store software codes of the first PLMN, the registration request information, and the registration acceptance information, and a software program that controls the access network device to complete the above processes, so that the processor 15 completes the above processes by executing the software program and calling the software codes; the processor 15 may be configured to perform the above-described process by executing the above-described software program and calling the above-described software code.

Optionally, the receiver 13 is further configured to, according to the first message, respectively send registration request messages corresponding to the at least two PLMNs to core network devices corresponding to the at least two PLMNs, and then receive a fourth message sent by a second core network device, where the fourth message includes registration rejection information indicating that the registration request of the UE on a second PLMN is rejected, the second core network device is a core network device corresponding to the second PLMN, and the second PLMN is a PLMN of the at least two PLMNs except for the first PLMN.

Optionally, the transmitter 14 is further configured to send a fifth message to the UE after the receiver 13 receives a fourth message sent by a second core network device, where the fifth message includes the registration rejection information accepted by the receiver 13.

Optionally, the third message sent by the sender 14 further includes the registration rejection information received by the receiver 13.

Optionally, the transmitter 14 is further configured to, if the receiver 13 receives the fourth message sent by the second core network device before the receiver 13 receives the second message sent by the first core network device, wait for the receiver 13 to receive the second message sent by the first core network device, and then send the third message to the UE.

Optionally, the second message received by the receiver 13 further includes a first registration status indication, where the first registration status indication is used to indicate that the registration request of the UE on the first PLMN is accepted.

The transmitter 14 is specifically configured to transmit the third message to the UE according to the first registration status indication received by the receiver 13.

Optionally, the fourth message received by the receiver 13 further includes a second registration status indication, where the second registration status indication is used to indicate that the UE is rejected in the second PLMN registration request.

The transmitter 14 is specifically configured to, according to the second registration status indication received by the receiver 13, wait for the receiver 13 to receive the second message sent by the first core network device, and then send the third message to the UE.

Optionally, the first message received by the receiver 13 further includes registration priorities of the at least two PLMNs.

The transmitter 14 is specifically configured to preferentially send, according to the registration priorities of the at least two PLMNs received by the receiver 13, a registration request message corresponding to a PLMN with a highest registration priority to a core network device corresponding to the PLMN in the at least two PLMNs.

Optionally, the transmitter 14 is further configured to send system information to the UE before the receiver 13 receives the first message sent by the UE, so that the UE selects the at least two PLMNs from the multiple PLMNs according to identifiers of the multiple PLMNs included in the system information.

Optionally, the registration request information that the UE requests registration from at least two PLMNs respectively in the first message received by the receiver 13 specifically includes: the first message includes registration request messages for requesting registration from the UE to the at least two PLMNs, respectively. Wherein,

the transmitter 14 is specifically configured to send, according to registration request messages that the UE requests registration to the at least two PLMNs respectively and that are included in the first message received by the receiver 13, registration request messages corresponding to the at least two PLMNs to core network devices corresponding to the at least two PLMNs respectively.

The second message received by the receiver 13 includes registration acceptance information that indicates that the registration request of the UE on the first PLMN is accepted, specifically: the second message comprises a registration acceptance message which indicates that the registration request of the UE on the first PLMN is accepted.

The third message sent by the sender 14 includes the registration acceptance information specifically: the third message includes the registration acceptance message.

Optionally, the registration rejection information that indicates that the registration request of the UE on the second PLMN is rejected in the fourth message received by the receiver 13 is specifically: the fourth message comprises a registration rejection message which indicates that the registration request of the UE on the second PLMN is rejected.

It should be noted that the memory 17 may also store the software code of the registration rejection information and the software code of the second PLMN.

It should be noted that the access network device provided in the embodiment of the present invention may be an eNB, an RNC, or a BSC, and the present invention is not limited thereto.

The embodiment of the invention provides an access network device, which receives registration request information sent by UE and requesting registration to at least two PLMNs respectively through the access network device, and the access network device sends the registration request information corresponding to the PLMN to core network devices corresponding to the at least two PLMNs respectively according to the registration request information, receives a second message which is sent by a first core network device and comprises registration acceptance information, and finally, the access network device sends a third message which comprises the registration acceptance information to the UE according to the second message, so that the UE completes registration in the first PLMN according to the registration acceptance information in the third message. By the scheme, the access network equipment can receive the registration request information respectively corresponding to the at least two PLMNs sent by the UE at one time and send the registration request information respectively corresponding to the at least two PLMNs to the corresponding core network equipment, so that the at least two core network equipment respectively corresponding to the at least two PLMNs can respectively perform the network registration process of the UE in the at least two PLMNs, the probability of successful network registration can be improved in the scene of network sharing, the network registration time can be shortened, and the network registration efficiency can be improved.

As shown in fig. 15, an embodiment of the present invention provides an HLR, which may include: a transmitter 24, a receiver 25, a processor 26, and a memory 27, wherein the transmitter 24, the receiver 25, and the memory 27 are all connected to the processor 26, for example, the transmitter 24, the receiver 25, and the memory 27 may all be connected to the processor 26 via a bus.

The receiver 25 and the transmitter 24 may be integrated together to form a transceiver.

The memory 27 is used to store executable program code, which includes computer operating instructions. The memory 27 may comprise a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

Processor 26 may be a central processing unit, or a particular integrated circuit, or one or more integrated circuits configured to implement embodiments of the present invention.

Specifically, the receiver 25 may be configured to receive a second location update request message sent by a first core network device, where the second location update request message is used to characterize that a UE requests registration or location update in a first PLMN corresponding to the first core network device, where the first PLMN is one of at least two PLMNs, and the UE requests registration from the at least two PLMNs through the same access network device; the transmitter 24 is configured to send a location update confirmation message corresponding to the second location update request message received by the receiver 25 to the first core network device; and the processor 26 is configured to reject, within a preset time after the transmitter 24 transmits the location update confirmation message, a first location update request message sent by a second core network device if the first location update request message is received, where the first location update request message is used to represent that the UE requests registration or location update in a second PLMN corresponding to the second core network device; and the memory 27 may be configured to store the software code of the first PLMN, the software code of the location update confirm message, and the software code of the first location update request message, and a software program that controls the HLR to perform the above-mentioned processes, so that the processor 26 performs the above-mentioned processes by executing the above-mentioned software programs and calling the above-mentioned software codes.

Specifically, the processor 26 may reject the first location update request message according to the location update confirmation message, and may reject the first location update request message according to the location information, stored in the HLR, of the UE successfully registered in the first PLMN.

Optionally, the processor 26 is further configured to start a timer after the transmitter 24 transmits the location update confirmation message corresponding to the second location update request message to the first core network device, where a timing time of the timer is the preset time.

Optionally, the processor 26 is specifically configured to reject the first location update request message sent by the second core network device if the first location update request message is received within the timing time of the timer.

Optionally, the processor 26 is further configured to obtain the information of the first core network device and the identifier of the UE according to the second location update request message received by the receiver 25, and obtain subscription data of the UE according to the identifier of the UE.

The transmitter 24 is further configured to send, according to the information of the first core network device acquired by the processor 26, the subscription data of the UE acquired by the processor 26 to the first core network device.

The embodiment of the present invention further provides an HLR, wherein the HLR receives a second location update request message sent by a first core network device, where the second location update request message is used to characterize that a UE requests registration or location update in a first PLMN corresponding to the first core network device, and the HLR sends a location update confirmation message corresponding to the second location update request message to the first core network device, and within a preset time after sending the location update confirmation message, if a first location update request message sent by a second core network device is received, the HLR rejects the first location update request message. By the scheme, when receiving the first location updating request message from the second core network device in the network registration process, the HLR can firstly judge whether the UE has already performed network registration and then determine whether the first location updating is performed so as to complete the network registration process effectively and quickly.

As shown in fig. 16, an embodiment of the present invention provides a UE, which may include, corresponding to a network registration method on a UE side: a transmitter 36, a receiver 37, a processor 38, and a memory 39, wherein the transmitter 36, the receiver 37, and the memory 39 are all connected to the processor 38, for example, the transmitter 36, the receiver 37, and the memory 39 may all be connected to the processor 38 through a bus.

The receiver 37 and the transmitter 36 may be integrated together to form a transceiver.

The memory 37 is used to store executable program code, including computer operating instructions. The memory 37 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.

Processor 38 may be a central processing unit, or a particular integrated circuit, or one or more integrated circuits configured to implement embodiments of the present invention.

Specifically, the receiver 36 may be configured to be a transmitter 36, configured to send a first message to the access network device, where the first message includes registration request information for requesting registration to at least two PLMNs, respectively; the receiver 37 is configured to receive a third message sent by the access network device, where the third message includes registration acceptance information, where the registration acceptance information indicates that a registration request in a first PLMN is accepted, the third message is sent to the access network device by a first core network device, the first core network device is a core network device corresponding to the first PLMN, and the first PLMN is one PLMN in the at least two PLMNs; the processor 38 is operable to complete registration in the first PLMN in accordance with the third message received by the receiver 37; the memory 39 may be configured to store software codes of the first PLMN, the registration request information, and the registration request result, and a software program that controls the UE to perform the above process, so that the processor 38 performs the above process by executing the software program and calling the software code.

Optionally, the transmitter 36 is further configured to, after the receiver 37 receives the third message sent by the access network device, send an authentication failure message to the second core network device if the receiver 37 receives an authentication request message sent by the second core network device; or,

the processor 38 is further configured to not reply the authentication request message if the receiver 37 receives the authentication request message sent by the second core network device, where the second core network device is a core network device corresponding to a second PLMN, and the second PLMN is a PLMN of the at least two PLMNs except the first PLMN.

Optionally, the receiver 37 is further configured to receive system information sent by the access network device before the first message is sent to the access network device, where the system information includes identifiers of multiple PLMNs.

The processor 38 is further configured to determine a plurality of PLMNs connected to the access network device according to the identifiers of the plurality of PLMNs received by the receiver 37.

The processor 38 is further configured to select the at least two PLMNs from the determined plurality of PLMNs.

Optionally, the processor 38 is specifically configured to select the at least two PLMNs from the multiple PLMNs according to a preset condition.

Optionally, the preset condition includes registration priorities of the PLMNs.

The processor 38 is specifically configured to select the at least two PLMNs with the highest priority from the determined PLMNs according to the registration priorities of the PLMNs.

Optionally, the first message sent by the transmitter 36 includes registration priorities of the at least two PLMNs.

Optionally, the registration request information sent by the sender 36 is specifically a registration request message, and the registration acceptance information received by the receiver 37 is specifically a registration acceptance message.

It should be noted that the memory 39 may also store the software code of the registration rejection information and the software code of the second PLMN.

It should be noted that the UE provided in the embodiment of the present invention may be a communicable electronic device such as a mobile phone and a computer, and the present invention is not limited thereto.

The embodiment of the present invention further provides a UE, where a first message is sent to an access network device by the UE, the first message includes registration request information requesting registration to at least two PLMNs, respectively, and the UE receives a third message sent by the access network device, the third message includes registration acceptance information, the third message including the registration acceptance information is sent to the access network device by a first core network device, the first core network device is a core network device corresponding to the first PLMN, the first PLMN is one PLMN of the at least two PLMNs, and the UE completes registration in the first PLMN according to the registration acceptance information in the third message. According to the scheme, the UE can send the registration request information corresponding to the at least two PLMNs to the access network equipment at one time, so that the access network equipment can send the registration requests corresponding to the at least two PLMNs to the at least two core network equipment to request the UE to try to perform network registration in the at least two PLMNs at one time, and therefore the UE can improve the probability of successful network registration and shorten the network registration time under the scene of network sharing, and the network registration efficiency is improved.

It will be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A network registration method, comprising:

2. The method of claim 1, wherein after the sending, according to the first message, the registration request messages corresponding to the at least two PLMNs to the core network devices corresponding to the PLMNs, respectively, the method further comprises:

3. The network registration method according to claim 2, wherein after receiving the fourth message sent by the second core network device, the method further comprises:

4. The network registration method of claim 2,

the third message further includes the registration rejection information.

5. The network registration method of claim 4, wherein the sending the third message to the UE comprises:

6. The network registration method of any one of claims 1-5, wherein the second message further comprises a first registration status indication indicating that the registration request of the UE on the first PLMN is accepted;

wherein the sending the third message to the UE comprises:

7. The network registration method according to claim 5 or 6, wherein the fourth message further comprises a second registration status indication indicating that the UE is rejected from the second PLMN registration request;

8. The network registration method of any of claims 1-7, wherein the first message further includes registration priorities of the at least two PLMNs,

9. The network registration method of any of claims 1-8, wherein before the receiving the first message sent by the UE, the method further comprises:

10. The network registration method of claim 1,

the registration request information that includes the registration request information that the UE requests registration to at least two PLMNs, respectively, is specifically:

the third message includes the registration acceptance message.

11. The network registration method of claim 2,

12. A network registration method, comprising:

13. A network registration method, comprising:

and completing registration in the first PLMN according to the third message.

14. The network registration method of claim 13, wherein after receiving the third message sent by the access network device, the method further comprises:

15. The network registration method of claim 13 or 14, wherein before sending the first message to the access network device, the method further comprises:

16. The method of network registration according to claim 15, wherein the selecting the at least two PLMNs from a plurality of PLMNs comprises:

17. The network registration method of claim 16, wherein the preset condition comprises registration priorities of the PLMNs,

18. The network registration method of any of claims 13-17,

the first message includes registration priorities of the at least two PLMNs.

19. The network registration method of claim 13,

20. An access network device, comprising:

21. The access network apparatus of claim 20,

22. The access network apparatus of claim 21,

23. The access network apparatus of claim 21,

24. The access network device of claim 21 or 23,

25. The access network device according to any of claims 20-24, wherein the second message received by the receiving unit further includes a first registration status indication, the first registration status indication indicating that the registration request of the UE on the first PLMN is accepted;

26. The access network equipment according to claim 24 or 25, wherein the fourth message received by the receiving unit further comprises a second registration status indication indicating that the UE is rejected in the second PLMN registration request,

27. The access network device of any of claims 20-26, wherein the first message received by the receiving unit further includes registration priorities of the at least two PLMNs,

28. An access network device according to any one of claims 20-27,

29. The access network apparatus of claim 20,

the third message includes the registration acceptance message.

30. The access network apparatus of claim 21,

31. A home location register, HLR, comprising:

a rejecting unit, configured to reject a first location update request message sent by a second core network device if the first location update request message is received within a preset time after the sending unit sends the location update confirmation message, where the first location update request message is used to represent that the UE requests registration or location update in a second PLMN corresponding to the second core network device.

32. A User Equipment (UE), comprising:

33. The UE of claim 32, wherein the UE further comprises a reply unit,

34. The UE according to claim 32 or 33, wherein the UE further comprises a selection unit,

35. The UE of claim 34,

36. The UE of claim 35, wherein the preset condition comprises registration priorities of the plurality of PLMNs,

37. The UE of any of claims 32-36,

38. The UE of claim 31,