CN106211311A

CN106211311A - A kind of user equipment registration is to the method and apparatus of network

Info

Publication number: CN106211311A
Application number: CN201510232993.XA
Authority: CN
Inventors: 张娟
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2015-05-08
Filing date: 2015-05-08
Publication date: 2016-12-07
Anticipated expiration: 2035-05-08
Also published as: CN106211311B

Abstract

The invention discloses a kind of user equipment registration method and apparatus to network, in order to solve UE when the local EPC of access switches to access grand net core net EPC, UE reports the GUTI of local EPC distribution to network, causes grand net core-network entities cannot register UE and again initiate attaching process with the problem being registered to network.The method is: UE determines that local network is accessed in the community at place, preserves local whole world unique temporary identity GUTI that local network is described UE distribution, and retains the GUTI that the most resident grand net core net is described UE distribution；Described UE determines that grand net core net is accessed in the community at place, or, described UE determine from access local network community move to access grand net core net community, send the most resident described grand net core net be described UE distribution GUTI to be registered to grand net core net.

Description

Method and equipment for registering user equipment to network

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and a device for registering a user equipment to a network.

Background

In the current protocol, a scenario of how a certain base station provides a service for User Equipment (UE) if the base station loses connection with a core network of a macro network in the macro network is discussed, and a processing mechanism when the base station (eNB) re-accesses to the network is studied.

In the current protocol, the base station needs to support the Operation of an IOPS (isolated E-UTRAN Operation for Public Safety, split E-UTRAN Operation; E-UTRAN, Evolved UMTS Terrestrial Radio Access Network; UMTS, Universal Mobile Telecommunications System) mode when the base station re-accesses to the Network. When the base station loses the S1 connection with the macro network core network due to natural disasters or other reasons, if the base station supports the IOPS mode of operation, the base station can still provide some service for the UE.

At present, this requirement is realized by deploying an Evolved Packet Core (EPC) of a local Evolved Packet network (EPC), and a special Public Land Mobile Network (PLMN) Identifier (ID) is configured for the local EPC. The eNB broadcasts the PLMN id of the macro network when connecting to the macro network EPC, and broadcasts the PLMN id of the home network when entering the IOPS mode.

As shown in fig. 1, a specific procedure for mode switching by an eNB with a local EPC deployed is as follows:

step 1: the eNB loses connection with the macro network EPC;

step 2: the eNB enters an IOPS mode and establishes connection with a local EPC;

and step 3: the eNB broadcasts the PLMN identification of the special PLMN configured by the local EPC;

and 4, step 4: UE executes PLMN selection process and resides in the special PLMN;

and 5: the UE attaches to the local EPC;

step 6: the local EPC provides related services such as public security and the like for the UE;

and 7: the eNB resumes connection with the macro network EPC;

and 8: the eNB stops the operation of the IOPS mode, broadcasts the PLMN identification of the macro network, disconnects the S1 connection to the local EPC and moves the UE to an idle state;

and step 9: the UE attaches normally to the macro network EPC.

From the above flow, it is not clear how the UE re-attaches to the macro network EPC after the eNB resumes S1 connection to the macro network EPC.

According to the existing protocol description, the eNB moves the UE to the idle state and then re-executes the PLMN selection procedure in step 8, thereby allowing the UE to re-select the PLMN to the macro network. Due to the change of PLMN identity, the UE needs to re-initiate a Tracking Area Update (TAU) procedure. Moreover, when the UE resides in the local EPC network before, the local EPC allocates information such as an Internet Protocol (IP) address, activated security information, and a Globally Unique Temporary Identifier (GUTI) to the UE, and the UE deletes the information allocated to the macro network EPC and stores the information allocated to the local EPC, and when the UE initiates a TAU procedure to the eNB carrying the information allocated to the local EPC, the eNB cannot find the MME in the macro network according to the GUTI, and cannot acquire the security information of the UE, so that the MME can only reject the TAU procedure of the UE first, and prompt the UE to initiate an attach (attach) procedure again, so as to successfully access to the macro network EPC. This may cause a long time interval for the UE to re-attach to the macro network EPC, and may increase signaling interaction between the UE and the macro network core network, which increases complexity of the procedure.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for registering user equipment to a network, which are used for solving the problems that when UE is switched from accessing a local EPC to accessing a macro network EPC, the UE reports GUTI allocated by the local EPC to the network, so that a macro network core network entity cannot register the UE and restart an attachment process to register to the network, and the UE is long in time consumption, multiple in interactive signaling and complex in process when registering to the network.

The embodiment of the invention provides the following specific technical scheme:

in a first aspect, a method for registering a user equipment to a network is provided, including:

the method comprises the steps that a cell where User Equipment (UE) is determined to be accessed into a local network, a local Global Unique Temporary Identifier (GUTI) distributed by the local network for the UE is saved, and a GUTI distributed by a last resident macro network core network for the UE is reserved;

and the UE determines that the cell where the UE is located accesses the macro network core network, or the UE determines that the UE moves from the cell accessed to the local network to the cell accessed to the macro network core network, and sends the GUTI allocated to the UE by the last resident macro network core network to register to the macro network core network.

In an implementation, when the UE stores the local globally unique temporary identity GUTI allocated by the local network to the UE, the method further includes:

and the UE stores the security context information distributed by the local network as local security context information and reserves the security context information distributed by the last resident macro network core network for the UE.

In an implementation, before the UE sends the GUTI allocated by the last camped macro network core network to the UE, the method includes:

and the UE encrypts the GUTI distributed to the UE by the last resident macro network core network by adopting the safety context information distributed to the UE by the last resident macro network core network.

In an implementation, the sending, by the UE, the GUTI allocated to the UE by the last camped macro network core network includes:

and the UE sends a non-access stratum (NAS) message, wherein the NAS message carries the GUTI allocated to the UE by the last resident macro network core network.

In practice, the method further comprises:

if the UE moves from a cell accessed to a first local network to a cell accessed to a second local network, receiving local GUTI and security context information distributed by the second local network for the UE;

updating the saved local GUTI with the local GUTI allocated by the second local network for the UE, and updating the saved local security context information with the security context information allocated by the second local network for the UE.

In implementation, the determining, by the UE, that the cell in which the UE is located accesses the macro network core network includes:

the UE receives a public land mobile network identifier (PLMN ID) broadcasted by the cell and determines the resident cell to access a macro network core network;

the UE moves from a cell accessing a local network to a cell accessing a macro network core network, comprising:

and the UE receives the PLMN ID broadcasted by the cell where the UE is located after moving and determines that the cell where the UE is located after moving accesses the core network of the macro network.

In implementation, the determining, by the UE, that the cell in which the UE is located accesses the local network includes:

and the UE receives the PLMNID of the local network broadcasted by the cell where the UE is located, and determines that the cell where the UE is located accesses the local network.

In a second aspect, a method for registering a user equipment to a network is provided, including:

a mobile management entity MME receives a globally unique temporary identifier GUTI sent by user equipment UE after the UE is switched from an access local network to an access macro network core network, wherein the GUTI is obtained when the UE is finally resided in the macro network core network;

and the MME registers for the UE according to the received GUTI.

In an implementation, the MME receiving a globally unique temporary identity, GUTI, of a user equipment, UE, includes:

and the MME receives a non-access stratum (NAS) message sent by the UE and acquires the GUTI carried in the NAS message.

In implementation, the registering, by the MME, for the UE according to the received GUTI includes:

if the MME determines that the security context information corresponding to the GUTI is locally stored, the MME acquires the security context information corresponding to the GUTI;

and if the MME determines that the security context information corresponding to the GUTI is not stored locally, the MME sends the GUTI to the MME which distributes the GUTI and receives the security context information corresponding to the GUTI returned by the MME which distributes the GUTI.

In a third aspect, a user equipment UE is provided, including:

the first processing module is used for determining that the cell is accessed to a local network, storing a local Global Unique Temporary Identifier (GUTI) distributed by the local network for the UE, and reserving the GUTI distributed by a last resident macro network core network for the UE;

and the second processing module is used for determining that the cell is accessed to the macro network core network, or moving from the cell accessed to the local network to the cell accessed to the macro network core network, and sending the GUTI allocated to the UE by the last resident macro network core network to register the GUTI to the macro network core network.

In an implementation, the first processing module is further configured to:

and when the local global unique temporary identifier GUTI allocated by the local network to the UE is saved, saving the security context information allocated by the local network as the local security context information, and keeping the security context information allocated by the last resident macro network core network to the UE.

In implementation, the second processing module is specifically configured to:

and encrypting the GUTI distributed to the UE by the last resident macro network core network by adopting the safety context information distributed to the UE by the last resident macro network core network.

In implementation, the second processing module is specifically configured to:

and sending a non-access stratum (NAS) message, wherein the NAS message carries the GUTI allocated to the UE by the last resident macro network core network.

In an implementation, the first processing module is further configured to;

In implementation, the second processing module is specifically configured to:

receiving a public land mobile network identifier (PLMN ID) broadcasted by the cell, and determining the resident cell to access a macro network core network;

or,

and receiving the PLMN ID broadcasted by the cell in which the mobile terminal is located after moving, and determining that the cell in which the mobile terminal is located accesses the core network of the macro network after moving.

In implementation, the first processing module is specifically configured to:

and receiving the public land mobile network identification (PLMN ID) of the local network broadcasted by the cell, and determining that the cell is accessed to the local network.

In a fourth aspect, a mobility management entity MME is provided, including:

the system comprises a receiving module, a judging module and a sending module, wherein the receiving module is used for receiving a globally unique temporary identifier GUTI sent by User Equipment (UE) after the UE is switched from an access local network to an access macro network core network, and the GUTI is obtained when the UE is finally resided in the macro network core network;

and the processing module is used for registering the UE according to the GUTI received by the receiving module.

In implementation, the receiving module is specifically configured to:

and receiving a non-access stratum (NAS) message sent by the UE, and acquiring the GUTI carried in the NAS message.

In implementation, the processing module is specifically configured to:

if the fact that the security context information corresponding to the GUTI is locally stored is determined, the security context information corresponding to the GUTI is obtained;

and if the fact that the security context information corresponding to the GUTI is not stored locally is determined, the GUTI is sent to the MME which distributes the GUTI, and the security context information corresponding to the GUTI returned by the MME which distributes the GUTI is received.

Based on the technical scheme, in the embodiment of the invention, the UE determines that the cell where the UE is located is accessed to the local network, the local GUTI allocated to the UE by the local network is stored, the GUTI allocated to the UE by the macro network core network which resides last is reserved, the UE is accessed to the macro network core network in the determined cell, or the UE determines that the UE moves from the cell accessed to the local network to the cell accessed to the macro network core network, and the GUTI allocated to the UE by the macro network core network which resides last is sent to register to the macro network core network, so that the problems that the GUTI allocated by the local EPC is reported to the network by the UE when the UE is switched from accessing to the local EPC to accessing to the macro network core network, the macro network core network entity cannot register the UE and restart the attachment process to register to the network, the UE registers to the network with long time, multiple interactive signaling and complex flow are solved, and the UE can be rapidly accessed to the macro network core network, the required interactive signaling is less, the flow is simple, and the burden of the UE and the network is reduced.

Drawings

Fig. 1 is a schematic diagram illustrating a mode switching process performed by an eNB with a local EPC deployed;

FIG. 2 is a flowchart illustrating a method for registering a UE to a network according to an embodiment of the present invention;

FIG. 3 is a flowchart illustrating a method for an MME to register a UE to a network according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a process in which an eNB in which a UE is located starts an IPS mode in an embodiment of the present invention;

FIG. 5 is a diagram illustrating a process of a UE moving from one eNB in IOPS mode to another eNB in IOPS mode according to an embodiment of the present invention;

FIG. 6 is a diagram illustrating a procedure of an eNB recovering connection with a macro network EPC from an IOPS mode according to an embodiment of the present invention;

FIG. 7 is a diagram illustrating a process of a UE moving from an IOPS mode eNB to an eNB accessing a core network of a macro network according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a UE according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of another UE according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of an MME structure in the embodiment of the present invention;

FIG. 11 is a schematic diagram of another MME structure according to an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core idea of the invention is as follows: when the UE determines that the cell is accessed to the local network, namely the local EPC, and stores the local GUTI allocated by the local network, the GUTI allocated to the UE by the last resident macro network core network is not deleted, and when the UE is accessed to the macro network core network again, the GUTI allocated to the UE by the last resident macro network core network is adopted to be registered to the macro network core network.

Based on the inventive concept, in the first embodiment of the present invention, as shown in fig. 2, the detailed procedure of registering the UE to the network is as follows:

step 201: and the UE determines that the cell is accessed to the local network, stores the local GUTI allocated to the UE by the local network, and reserves the GUTI allocated to the UE by the last resident macro network core network.

Specifically, when the UE stores the local GUTI allocated to the UE by the local network, the GUTI allocated to the UE by the last-residing macro network core network is retained, and the security context information allocated to the UE by the last-residing macro network core network is retained.

Specifically, the UE receives a public land mobile network identification (PLMN ID) of the home network broadcasted by the cell where the UE is located, and determines that the cell where the UE is located accesses the home network.

Step 202: and the UE determines that the cell where the UE is located is accessed to the macro network core network, or the UE moves from the cell accessed to the local network to the cell accessed to the macro network core network, and sends the GUTI allocated to the UE by the last resident macro network core network to register to the macro network core network.

Specifically, the UE sends a non-access stratum (NAS) message, where the NAS message carries the GUTI allocated to the UE by the last-camped macro network core network.

In implementation, the UE encrypts the GUTI allocated to the UE by using the security context information allocated to the UE by the last-residing macro network core network. Specifically, the UE encrypts the GUTI allocated to the UE by the last-residing macro network core network using the security context information allocated to the UE by the last-residing macro network core network, and then carries the encrypted GUTI in the NAS message for transmission.

In a specific implementation, if the UE moves from a cell accessing a first local network to a cell accessing a second local network, the local GUTI and security context information allocated to the UE by the second local network are received, the local GUTI allocated to the UE by the second local network is used to update the stored local GUTI, and the security context information allocated to the UE by the second local network is used to update the stored local security context information.

Specifically, the UE receives a public land mobile network identification (PLMN ID) broadcasted by a cell, and determines the cell to camp on to access a macro network core network.

Specifically, the UE receives the PLMN ID broadcasted by the cell where the UE is located after moving, and determines that the cell where the UE is located after moving accesses the macro network core network.

Based on the same inventive concept, in the second embodiment of the present invention, as shown in fig. 3, a detailed method flow for an MME to register a UE to a network is as follows:

step 301: and the MME receives a GUTI sent after the UE is switched from the local network to the macro network core network, wherein the GUTI is obtained when the UE finally resides in the macro network core network.

Specifically, the MME receives an NAS message sent by the UE, and acquires a GUTI carried in the NAS message.

Step 302: and the MME registers for the UE according to the received GUTI.

Specifically, if the MME determines that the security context information corresponding to the GUTI is locally stored, the MME acquires the security context information corresponding to the GUTI; and if the MME determines that the security context information corresponding to the GUTI is not stored locally, the MME sends the GUTI to the MME which distributes the GUTI and receives the security context information corresponding to the GUTI returned by the MME which distributes the GUTI.

In the embodiment of the invention, after the UE determines that the cell is accessed to the local network, the stored local GUTI and local security context allocated by the local network do not influence the storage of the relevant parameters of the core network of the macro network, namely the GUTI and security context allocated to the UE by the last resident core network of the macro network are still reserved after the UE receives the local GUTI and the local security context.

And when the UE is subjected to mobile registration to a new local network, the new local network allocates a local GUTI and a local security context for the UE, the GUTI allocated to the UE by the new local network is adopted to update the stored local GUTI, the local security context allocated to the UE by the new local network is adopted to update the locally stored local security context, and the GUTI and the security context allocated to the UE by the last resident macro network core network are still reserved.

When the UE selects the PLMN ID of the macro network core network, for example, the UE moves out of the coverage of the IOPS mode cell, accesses to the eNB connected to the macro network core network, or the eNB in which the UE is located recovers from the IOPS mode to the connection with the macro network core network, when the UE sends an NAS message to the eNB, the UE carries the GUTI and the security context that are finally stored when residing in the macro network core network, and the eNB selects the MME that resides before according to the GUTI and the security context, so as to complete registration. Or, when the UE sends the NAS message to the eNB, the UE carries the GUTI stored when the UE finally resides in the macro network core network, and after the eNB selects the MME for the UE, the MME acquires the security context from the MME where the UE previously resides according to the GUTI, so as to complete registration. In summary, when the UE switches from accessing the local EPC to accessing the macro network core network, the UE can quickly register to the macro network core network, and the registration process requires less interactive signaling and has a simple flow.

The following describes a procedure for fast registering a UE to a network according to several embodiments.

The first embodiment: the eNB in which the UE is located starts the IPS mode.

As shown in fig. 4, the UE resides in the EPC of PLMN a through eNB1, and the UE saves GUTI1 and the corresponding security context allocated by PLMN a for the UE.

The eNB1 loses S1 connection with the EPC of PLMN a, starts the IOPS mode, and broadcasts the identity of PLMN B over the air in the IOPS mode. The UE initiates a registration process to the PLMN B after selecting the PLMN B over the air interface, and resides in the local EPC1 corresponding to the PLMN B.

The local EPC1 allocates a GUTI for the UE and activates the corresponding security context, the UE saves the GUTI allocated by the local EPC1 as a local GUTI, and the security context allocated by the local EPC1 as the local security context corresponding to the local GUTI. The GUTI1 and the corresponding security context allocated by PLMN a for the UE remain in the UE.

The second embodiment: in a first embodiment, the UE moves from one eNB in IOPS mode to another eNB in IOPS mode.

As shown in fig. 5, when the UE moves to eNB3 and eNB3 is in IOPS mode, the UE needs to re-register with the local EPC3 to which eNB3 is connected. The local EPC3 reallocates the GUTI3 and the corresponding security context for the UE, and the UE updates the local GUTI with the GUTI3 allocated by the local EPC3 and updates the local security context with the security context allocated by the local EPC 3.

The UE retains the GUTI1 and the corresponding security context allocated by PLMN a for the UE.

The third embodiment: in a first embodiment, the eNB resumes connection with the macro network core network from the IOPS mode.

As shown in fig. 6, when the eNB1 where the UE is located recovers from the IOPS mode to connect to PLMN a, the UE needs to re-access PLMN a. Specifically, eNB1 broadcasts the identity of PLMN a, a. After the UE selects PLMN a, in the process of registering to PLMN a, the UE is identified using the saved GUTI1 allocated by the last resident macro network core network, and the NAS message sent to the eNB is encrypted using the security context corresponding to the GUTI 1. When the eNB1 performs MME selection according to GUTI1, a previously registered MME is selected for the UE, so that the UE is quickly registered to PLMN a.

The fourth embodiment: in a first embodiment, the UE moves from an IOPS mode eNB to an eNB accessing the core network of the macro network.

As shown in fig. 7, the UE moves under the coverage of eNB2, and eNB2 resides at the EPC of PLMN a. The eNB2 broadcasts the identity of PLMN a, and the identity of PLMN a broadcast by eNB2 has a higher priority, and the UE re-registers with the EPC of PLMN a. In the process of registering the UE with the EPC of PLMN a, the UE is identified by using the locally stored GUTI1 allocated by the last resident macro network core network, and the UE is sent to eNB2 by encrypting GUTI1 with the security context allocated by the locally stored last resident macro network core network and carrying the encrypted GUTI1 in an NAS message.

The eNB2 selects an MME according to GUTI1, selects a previously registered MME for the UE, so that the UE is quickly registered into the EPC of PLMN a.

If the eNB2 does not find the MME previously registered by the UE according to GUTI1, the eNB2 selects a new MME for the UE, the new MME finds the MME previously registered by the UE according to GUTI1, and obtains the security context of the UE from the MME previously registered by the UE, so that the UE is rapidly registered in the EPC of PLMN A.

Based on the same inventive concept, a third embodiment of the present invention provides a UE, and the specific implementation of the UE may refer to the description of the UE in the foregoing method embodiment, and repeated details are not repeated, as shown in fig. 8, the UE mainly includes:

a first processing module 801, configured to determine that a cell where the cell is located accesses a local network, store a local globally unique temporary identifier GUTI allocated by the local network for the UE, and reserve a GUTI allocated by a last-residing macro network core network for the UE;

a second processing module 802, configured to determine that the cell where the UE is located accesses the macro network core network, or moves from the cell accessing the local network to the cell accessing the macro network core network, and send the GUTI allocated by the last resident macro network core network for the UE to register to the macro network core network.

In implementation, the first processing module 801 is further configured to:

Specifically, the second processing module 802 is specifically configured to:

In implementation, the first processing module 801 is further configured to;

if the UE moves from a cell accessed to a first local network to a cell accessed to a second local network, receiving local GUTI and security context information distributed by the second local network for the UE

Specifically, the second processing module 802 is specifically configured to:

or,

Specifically, the first processing module is specifically configured to:

Based on the same inventive concept, in a fourth embodiment of the present invention, a UE is provided, and specific implementation of the UE may refer to description about the UE in the foregoing method embodiment, and repeated parts are not repeated, as shown in fig. 9, the UE mainly includes a processor 901, a memory 902, and a transceiver 903, where a preset program is stored in the memory 902, and the processor 901 reads the preset program in the memory 902, and executes the following processes according to the program:

determining that the cell is accessed to a local network, storing a local Global Unique Temporary Identifier (GUTI) distributed by the local network for the UE, and reserving the GUTI distributed by a last resident macro network core network for the UE;

determining that the cell is accessed to the macro network core network, or moving from the cell accessed to the local network to the cell accessed to the macro network core network, and instructing the transceiver 903 to send the GUTI allocated by the last resident macro network core network for the UE to register to the macro network core network.

Specifically, when the processor 901 stores the local globally unique temporary identifier GUTI allocated by the local network to the UE, the security context information allocated by the local network is stored as the local security context information, and the security context information allocated by the last resident macro network core network to the UE is retained.

Specifically, the processor 901 encrypts, by using the security context information allocated to the UE by the last-camped macro network core network, the GUTI allocated to the UE by the last-camped macro network core network, and then transmits the encrypted GUTI through the transceiver 903.

Specifically, the processor 901 instructs the transceiver 903 to send an NAS message, where the NAS message carries the GUTI allocated by the last camped macro network core network for the UE.

In a specific implementation, if the UE moves from a cell accessing a first local network to a cell accessing a second local network, the processor 901 receives, through the transceiver 903, a local GUTI and security context information allocated to the UE by the second local network;

Specifically, the processor 901 receives the PLMN ID broadcasted by the cell through the transceiver 903, and determines that the cell is camped on to access the macro network core network;

or,

the transceiver 903 receives the PLMN ID broadcasted by the cell where the mobile station is located, and determines that the cell where the mobile station is located accesses the core network of the macro network.

Specifically, the processor 901 receives the PLMN ID of the local network broadcasted by the cell where it is located through the transceiver 903, and determines that the cell where it is located accesses the local network.

The bus architecture may include, among other things, any number of interconnected buses and bridges, with one or more processors, represented by a processor, and various circuits of memory, represented by memory, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver may be a plurality of elements, i.e., including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor is responsible for managing the bus architecture and the usual processing, and the memory may store data used by the processor in performing operations.

Based on the same inventive concept, in a fifth embodiment of the present invention, an MME is provided, and specific implementation of the MME may refer to the description about the MME in the above method embodiment, and repeated details are not repeated, as shown in fig. 10, the MME mainly includes:

a receiving module 1001, configured to receive a globally unique temporary identifier GUTI sent after a UE is switched from an access local network to an access macro network core network, where the GUTI is obtained when the UE finally resides in the macro network core network;

a processing module 1002, configured to register for the UE according to the GUTI received by the receiving module.

Specifically, the receiving module 1001 is specifically configured to:

Specifically, the processing module 1002 is specifically configured to:

Based on the same inventive concept, in a fifth embodiment of the present invention, an MME is provided, and specific implementation of the MME may refer to description about an MME in the above method embodiment, and repeated parts are not repeated, as shown in fig. 11, the MME mainly includes a processor 1101, a memory 1102, and a transceiver 1103, where the memory 1102 stores a preset program, and the processor 1101 reads the preset program in the memory 1102, and executes the following processes according to the program:

receiving, by a transceiver 1103, a globally unique temporary identifier GUTI sent after the UE is switched from the access local network to the access macro network core network, where the GUTI is obtained when the UE finally resides in the macro network core network;

and registering the UE according to the GUTI received by the receiving module.

Specifically, the processor 1101 receives, through the transceiver 1103, a NAS message sent by the UE, and acquires the GUTI carried in the NAS message.

Specifically, if determining that the security context information corresponding to the GUTI is locally stored, the processor 1101 obtains the security context information corresponding to the GUTI;

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method of registering a user device with a network, comprising:

2. The method of claim 1, wherein when the UE maintains a local globally unique temporary identity, GUTI, assigned by a local network to the UE, the method further comprises:

3. The method of claim 2, wherein the UE before sending the GUTI assigned by the last camped macro network core network for the UE, comprises:

4. The method of any of claims 1-3, wherein the UE sending the GUTI assigned to the UE by the last camped macro network core network comprises:

5. The method of claim 2 or 3, wherein the method further comprises:

6. The method of claim 1, wherein the determining, by the UE, the cell in which to access the macro network core network comprises:

7. The method of claim 1, wherein the UE determining that the cell in which the UE is located accesses a local network comprises:

8. A method of registering a user device with a network, comprising:

and the MME registers for the UE according to the received GUTI.

9. The method of claim 8, wherein the MME receives a Globally Unique Temporary Identity (GUTI) of a User Equipment (UE), comprising:

10. The method of claim 8 or 9, wherein the MME registering for the UE according to the received GUTI, comprising:

11. A User Equipment (UE), comprising:

12. The UE of claim 11, wherein the first processing module is further to:

13. The UE of claim 12, wherein the second processing module is specifically configured to:

14. The UE of any one of claims 11-13, wherein the second processing module is specifically configured to:

15. The UE of claim 12 or 13, wherein said first processing module is further to;

16. The UE of claim 11, wherein the second processing module is specifically configured to:

or,

17. The UE of claim 11, wherein the first processing module is specifically configured to:

18. A mobility management entity, MME, comprising:

19. The MME of claim 18, wherein the receiving module is specifically configured to:

20. The MME of claim 18 or 19, wherein the processing module is specifically configured to: