WO2019095143A1

WO2019095143A1 - Mobility management method and apparatus

Info

Publication number: WO2019095143A1
Application number: PCT/CN2017/111103
Authority: WO
Inventors: 刘建华
Original assignee: Oppo广东移动通信有限公司
Priority date: 2017-11-15
Filing date: 2017-11-15
Publication date: 2019-05-23
Also published as: CN111052793B; CN111052793A

Abstract

The present invention provides a mobility management method and apparatus, the method comprising: a mobility management device receiving a handover required message; and if handover type information is parsed from the handover required message, triggering handover indicated by the handover type information. By carrying the handover type information in the handover required message, the present invention enables the mobility management device to determine a triggered handover type according to the handover type information.

Description

Method and device for mobility management

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and apparatus for mobility management.

Background technique

With the rapid development of wireless network communication technology, wireless communication networks have gradually entered the 5G era. The 5G cellular network is mainly composed of three domains: 5GC (core network), NG-RAN (access network), and UE (user equipment).

The NG-RAN has a scenario in which both the gNB (the base station in the 5G network) and the eNB (the base station in the 4G network) access the 5G CN, as shown in FIG. 1 . When the UE needs to handover from 5G to 4G, the base station of the NG-RAN sends a Handover Required message to the AMF (Access Mobility Management Function). If the target base station identifier in the message is the identifier of the eNB, and the eNB accesses both the 5GC and the EPC (4G core network), the AMF cannot determine whether to trigger the RAT (access type) handover or the system (System). Switch. Also, the above problem occurs when the UE switches from 4G to 5G.

Summary of the invention

In view of this, the present invention provides a method and apparatus for mobility management, so as to solve the problem that the mobility management device that cannot be determined by the mobility management device that occurs when the UE switches between 4G and 5G.

A method for mobility management is provided in the embodiment of the present invention, where the method includes:

The access network side device determines the handover type information;

A handover request message carrying the handover type information is sent to the mobility management device.

According to an embodiment of the present invention, the determining, by the access network side device, the handover type information includes:

The access network side device determines the handover type information when the network side does not support the service requested by the UE.

The access network side device receives a handover request message from the mobility management device, where the handover request message is sent by the mobility management device after receiving a service request message from the UE, where the service request message carries Switching type information;

The switching type information is parsed from the handover request message.

According to an embodiment of the present invention, the method further includes:

The access network side device sends the handover type information and/or the service type information supported by the access network side device to the mobility management device, and the mobility management device sends the information to the UE.

According to an embodiment of the present invention, the sending, by the access network side device, the handover type information and/or the service type information to the mobility management device includes:

The switch type information and/or service type information supported by the access network side device is carried in the registration request message and sent to the mobility management device.

According to an embodiment of the invention, the switching type comprises:

Access type RAT switching, system system switching, or circuit domain switching Circuit Switch.

The embodiment of the invention further provides a method for mobility management, the method comprising:

The UE determines handover type information;

Sending a service request message carrying the handover type information.

During the network registration process, the UE acquires handover type information and/or service type information supported by the network side from the mobility management device.

According to an embodiment of the present invention, the obtaining, by the mobility management device, the handover type information supported by the access network side device includes:

The UE parses the handover type information and/or the service type information supported by the network side from the registration accept message sent by the mobility management device.

According to an embodiment of the invention, the switching type comprises:

The mobility management device receives the handover request message;

If the handover type information is parsed from the handover request message, the handover indicated by the handover type information is triggered.

If the handover type information is not parsed from the handover request message but the service type information is parsed and the core network supports the service, triggering the RAT handover; or

If the handover type information is not parsed from the handover request message, but the service type information is parsed, and the core network supports the service and the user subscribes to the service, the RAT handover is triggered.

If the handover type information and the service type information are not resolved from the handover request message, and the mobility management device is connected to the target base station corresponding to the target base station identifier carried in the handover request message, the RAT handover is triggered.

If the handover type information and the service type information are not resolved from the handover request message, and the mobility management device is not connected to the target base station corresponding to the target base station identifier carried in the handover request message, the system handover is triggered.

According to an embodiment of the present invention, the mobility management device is an AMF device, and the target base station identifier carried in the handover request message is an identifier of an eNB; or

The mobility management device is an MME device, and the target base station identifier carried by the handover request message is an identifier of the gNB.

According to an embodiment of the invention, the switching type comprises:

Access type RAT switching, system system switching, or line switching Circuit Switch.

The invention also provides a method for mobility management, the method comprising:

The mobility management device receives a service request message that is sent by the UE and carries the handover type information;

And transmitting, to the access network side device, a handover request message carrying the handover type information.

The mobility management device receives the handover type information and/or service type information supported by the access network side device sent by the access network side device in the network registration process of the UE; and the handover type information supported by the network side and / or service type information is sent to the UE.

According to an embodiment of the present invention, the receiving the access type information supported by the access network side device sent by the access network side device includes: the mobility management device receiving the registration request message sent by the access network side device, where The registration request message carries the handover type information and/or service type information supported by the access network side device;

The sending the handover type information supported by the access network side device to the UE includes: the mobility management device sending a registration accept message to the UE, where the registration accept message carries With switch type information and/or service type information supported by the network side.

The following apparatus is also provided correspondingly in the embodiment of the present invention:

A device for mobility management is provided on an access side device, and the device includes:

a first determining unit, configured to determine switching type information;

And a first sending unit, configured to send, to the mobility management device, a handover request message that carries the handover type information.

A device for mobility management is provided in a UE, and the device includes:

a second determining unit, configured to determine switching type information;

The second sending unit is configured to send a service request message that carries the handover type information.

A mobility management device is provided on a mobility management device, the device comprising:

a second receiving unit, configured to receive a handover request message;

And a handover triggering unit, configured to trigger a handover indicated by the handover type information if the handover type information is parsed from the handover request message.

a third receiving unit, configured to receive a service request message that is sent by the UE and carries the handover type information;

And a third sending unit, configured to send, to the access network side device, a handover request message that carries the handover type information.

The invention also provides an apparatus, including

One or more processors;

Memory

One or more programs, the one or more programs being stored in the memory, the operations in the above methods being performed by the one or more processors.

The present invention also provides a storage medium containing computer executable instructions for performing the operations of the above methods when executed by a computer processor.

It can be seen from the above technical solution that the present invention carries the handover type information in the handover request message, so that the mobility management device can determine the type of handover triggered according to the handover type information.

DRAWINGS

FIG. 1 is a schematic diagram of a scenario according to an embodiment of the present invention;

2 is a flowchart of a method according to Embodiment 1 of the present invention;

3 is a flowchart of a method according to Embodiment 2 of the present invention;

4 is a schematic diagram of a registration process according to Embodiment 2 of the present invention;

FIG. 5 is a flowchart of a method according to Embodiment 3 of the present invention;

6 is a flowchart of a method according to Embodiment 4 of the present invention;

FIG. 7 is a schematic diagram of a registration process according to Embodiment 4 of the present invention; FIG.

FIG. 8 is a structural diagram of an apparatus installed on an access side device according to an embodiment of the present disclosure;

FIG. 9 is a structural diagram of an apparatus installed in a UE according to an embodiment of the present disclosure;

FIG. 10 is a structural diagram of a device installed in a mobility management device according to an embodiment of the present invention;

FIG. 11 is a structural diagram of another apparatus installed in a mobility management device according to an embodiment of the present invention.

Detailed ways

The present invention will be described in detail below with reference to the drawings and specific embodiments.

The core idea of the present invention is to carry the handover type information in the handover request message. Instructing the mobility management device to trigger a corresponding type of handover. The types of handovers that can be carried in the handover request message may include, but are not limited to, RAT handover, System handover, or Circuit Switch.

The present invention is applicable to handover between different types of networks, for example, the present invention is applicable to both switching from 5G to 4G, and also to switching from 4G to 5G. The details are described below in conjunction with the embodiments.

Embodiment 1

FIG. 2 is a flowchart of a method according to Embodiment 1 of the present invention. The embodiment takes a scenario of switching from 5G to 4G as an example. As shown in FIG. 2, the method may include the following steps:

In 201, the NG-RAN carries HO type (Handover Type) information in the HO Required message sent to the AMF.

If the NG-RAN detects that the network side does not support the service requested by the UE, for example, the access network does not support the service requested by the UE, or the core network does not support the service requested by the UE, the NG-RAN actively sends the HO Required to the AMF. Message.

In the HO Required message sent by the NG-RAN to the AMF, the NG-RAN may determine the handover type used in the current handover, and the handover type must be supported by the core network side device (for example, the target eNB). Then, it is determined that the handover type information used in the handover is carried in the HO Required message and sent to the AMF. The switch type information may be represented by a field in the HO Required message. The specific form of the present invention is not limited. For example, 00 may be used for RAT handover, 01 for System switching, and 10 for Circuit Switch switching. This field can be extended to support other types of switching that occur later.

In 202, the AMF is determined according to the HO type information carried in the HO Required message. The type of the triggered switch is triggered and the corresponding switch is triggered.

The case where the AMF parses the HO Required message and triggers the handover may include, but is not limited to, the following:

In the first case, the AMF parses the HO Required message, and if the HO type information is parsed, the handover indicated by the HO type information is triggered.

If the parsed HO type information indicates that the RAT HO handover is performed, the AMF triggers the RAT HO handover. When the RAT HO is switched, the 5GC is unchanged, and the accessed base station is switched from the gNB to the eNB, and the specific eNB may be determined according to the target base station identifier carried in the HO Required message.

If the parsed HO type information indicates that the system is switched, the AMF triggers the system to switch. When the system is switched, the accessing core network is switched from the 5GC to the EPC, and the accessed base station is switched to the eNB. The specific eNB can be determined according to the target base station identifier carried in the HO Required message.

If the HO type information obtained by the analysis indicates that the Circuit Switch is switched, the AMF triggers the Circuit Switch to switch. When the Circuit Switch is switched, the MSC (Mobile Switching Center) is switched.

It should be noted that, once the AMF triggers a specific type of handover, the subsequent handover procedure is not limited in the embodiment of the present invention, and the existing RAT handover, system handover, and Circuit Switch handover procedure may be adopted.

The second case: if the HO type information is not parsed from the HO Required message but the service type information is parsed and the core network supports the service, the RAT handover is triggered. or,

If the HO type information is not parsed from the HO Required message, but the analysis is obtained The service type information, and the core network supports the service and the user subscribes to the service, triggering the RAT handover.

The service type information carried in the HO Required is usually a type of special service used by the UE, such as an emergency call service. For such a special service, if both the access network and the core network support and sign the service, the RAT switch is triggered. .

In the third case, if the HO type information and the Service type information are not parsed from the HO Required message, and the AMF is connected to the target base station corresponding to the target base station identifier carried by the HO Required, the RAT handover is triggered.

The fourth case: if the above three cases are not satisfied, for example, if the HO type information and the Service type information are not parsed from the HO Required message, and the target base station corresponding to the target base station identifier carried by the AMF and the HO Required message is not connected, Then trigger system switching.

Embodiment 2

FIG. 3 is a flowchart of a method according to Embodiment 2 of the present invention, and the embodiment is also used for switching from 5G to 4G. As shown in FIG. 3, the method may include the following steps:

In 301, the UE carries HO type (Handover Type) information in a Service Request message sent to the AMF.

In some cases, the handover request is actively triggered by the UE, and the UE may send a Service Request to instruct the network to perform handover, and indicate the HO Type.

In this case, the UE needs to know in advance the HO type and the service type supported by the network side. In the embodiment of the present invention, the NG-RAN can support the access network side device in the network registration process of the UE. The HO Type information and/or Service Type information is sent to the AMF, and further the AMF will support the HO Type information supported by the network side and/or Or Service Type information is provided to the UE. Specifically, the process can be as shown in FIG.

After the UE initiates the network registration, the NG-RAN may carry the HO Type information and/or the Service Type information supported by the access network side device in the Registration Request message sent to the AMF. The intermediate registration process is not shown in FIG. 4, and when the registration AMF is sent to the UE to send a Registration Accept message, the Registration Accept message carries the HO Type information and/or the Service Type information supported by the network side. The UE then obtains and saves HO Type information and/or Service Type information supported by the network side. When the UE sends a Service Request message to indicate that the network side performs the handover, the HO Type adopted by the current handover is selected from the HO Type supported by the network side, and is carried in the Service Request message.

In addition, when the above-mentioned registration accept message carries the support status of the service type on the network side, for example, 00 indicates that only the core network supports the special service type of the UE, and 01 indicates that the core network and the access network do not support the special service type of the UE. 10 indicates that both the core network and the access network support the special service type of the UE.

Continuing to refer to FIG. 3, in the 302, the AMF sends an N2Request for HO (Handover Request sent over the N2 interface) message to the NG-RAN, where the N2Request for HO message carries the HO type information.

In 203, the NG-RAN carries the HO type information in the HO Required message sent to the AMF.

In the embodiment of the present invention, a field is used in the service request message, the N2Request for HO message, and the HO Required message. The specific representation is not limited in the present invention. For example, 00 can be used to indicate RAT switching, and 01 is used to indicate System switching, using 10 means Circuit Switch switching. This field can be extended to Support for other types of switching methods that follow.

In 304, the AMF determines the type of handover triggered according to the HO type information carried in the HO Required message.

This step is the same as the step 202 in the first embodiment. For details, refer to the description of the step 202 in the first embodiment, and details are not described herein.

Embodiment 3

FIG. 5 is a flowchart of a method according to Embodiment 3 of the present invention, where the embodiment is used for switching from 4G to 5G. As shown in FIG. 5, the method may include the following steps:

In 501, the E-UTRAN (the access network side device of 4G) carries the HO type (Handover Type) information in the HO Required message transmitted to the MME (Mobile Management Device of 4G).

If the E-UTRAN detects that the network side does not support the service requested by the UE, for example, the access network does not support the service requested by the UE, or the core network does not support the service requested by the UE, the E-UTRAN actively sends the HO Required to the MME. Message.

In the HO Required message sent by the E-UTRAN to the MME, the E-UTRAN may determine the type of handover used in the handover, which must be supported by the core network side device (eg, the target gNB). Then, the handover type information that is determined to be used in the handover is carried in the HO Required message and sent to the MME. The HO Type information may be represented by a field in the HO Required message. The specific representation is not limited by the present invention. For example, 00 may be used for RAT handover, 01 for System switching, and 10 for Circuit Switch switching. This field can be extended to support other types of switching that occur later.

In 502, the MME determines according to the HO type information carried in the HO Required message. The type of the triggered switch is triggered and the corresponding switch is triggered.

The case where the MME parses the HO Required message and triggers the handover may specifically include, but is not limited to, the following:

In the first case, the MME parses the HO Required message, and if the HO type information is parsed, the handover indicated by the HO type information is triggered.

If the parsed HO type information indicates that the RAT HO handover is performed, the MME triggers the RAT HO handover. When the RAT HO is switched, the 4GC is unchanged, and the accessed base station is switched from the eNB to the gNB, and the specific handover to which gNB can be determined according to the target base station identifier carried in the HO Required message.

If the parsed HO type information indicates that system switching is performed, the MME triggers system switching. When the system is switched, the accessing core network is switched from the EPC to the 5GC, and the accessed base station is switched to the gNB. The specific gNB can be determined according to the target base station identifier carried in the HO Required message.

If the HO type information obtained by the analysis indicates that the Circuit Switch is switched, the MME triggers a Circuit Switch switch. When the Circuit Switch is switched, the MSC (Mobile Switching Center) is switched.

It should be noted that, once the MME triggers a specific type of handover, the subsequent handover procedure is not limited in the embodiment of the present invention, and the existing RAT handover, system handover, and Circuit Switch handover procedure may be adopted.

In the third case, if the HO type information and the Service type information are not parsed from the HO Required message, and the MME is connected to the target base station corresponding to the target base station identifier carried by the HO Required, the RAT handover is triggered.

The fourth case: if the above three cases are not satisfied, for example, if the HO type information and the service type information are not parsed from the HO Required message, and the target base station corresponding to the target base station identifier carried by the MME and the HO Required message is not connected, Then trigger system switching.

Embodiment 4

FIG. 6 is a flowchart of a method according to Embodiment 4 of the present invention, which is also used for switching from 4G to 5G. As shown in FIG. 6, the method may include the following steps:

In 601, the UE carries HO type (Handover Type) information in a Service Request message sent to the MME.

In this case, the UE needs to know the HO Type and the service type supported by the network in advance. In the embodiment of the present invention, the access network side device can be supported by the E-UTRAN in the network registration process of the UE. The HO type information and the service type are sent to the MME, and further the MME supported by the MME by the network side Type information and/or Service Type information is provided to the UE. Specifically, the process can be as shown in FIG.

After the UE initiates the network registration, the E-UTRAN may carry the HO Type information and/or the Service Type information supported by the access network side device in the Registration Request message sent to the MME. The intermediate registration process is not shown in FIG. 7. When the registration MME sends a Registration Accept message to the UE, the Registration Accept message carries the HO Type information and/or the Service Type information supported by the network side. The UE then obtains and saves HO Type information and/or Service Type information supported by the network side. When the UE sends a Service Request message to indicate that the network side performs the handover, the HO Type adopted by the current handover is selected from the HO Type supported by the network side, and is carried in the Service Request message.

Continuing to refer to FIG. 6, in 602, the MME sends an N2Request for HO (Handover Request sent over the N2 interface) message to the E-UTRAN, where the N2Request for HO message carries the HO type information.

In 603, the E-UTRAN carries the HO type information in the HO Required message sent to the MME.

In the embodiment of the present invention, a field is used in the service request message, the N2Request for HO message, and the HO Required message. The specific representation is not limited in the present invention. For example, 00 can be used to indicate RAT switching, and 01 is used to indicate System switching, using 10 means Circuit Switch switching. This field can be extended to support other types of switching that occur later.

In 604, the MME determines the type of handover triggered according to the HO type information carried in the HO Required message.

This step is the same as the step 502 in the third embodiment. For details, refer to the description of the step 502 in the third embodiment, and details are not described herein.

The above is a detailed description of the method provided by the present invention, and the apparatus provided by the present invention will be described in detail below with reference to the embodiments.

FIG. 8 is a structural diagram of an apparatus provided on an access side device according to an embodiment of the present invention. As shown in FIG. 8, the apparatus may include: a first determining unit 01 and a first sending unit 02, and may further include a first receiving. Unit 03 and first registration processing unit 04. The main functions of each component are as follows:

The first determining unit 01 is responsible for determining the switching type information.

There are two main situations here:

In one case, when the access network side device detects that the network side does not support the service requested by the UE, the first determining unit 01 determines the handover type information. In this case, the access network side device actively triggers the handover.

In another case, the access network side device passively triggers the handover, and the UE sends a service request carrying the handover type information to the mobility management device, and the mobility management device sends a handover request carrying the handover type information to the access network side device. After the first receiving unit 03 receives the handover request from the mobility management device, the first determining unit 01 parses the handover type information from the handover request.

In the latter case, the UE needs to know the handover type and service type supported by the network side. In the network registration process of the UE, the first registration processing unit 04 sends the handover type information and/or the service type information supported by the access network side device to the mobility management device, and is sent by the mobility management device to the UE. . Specifically, the first registration processing unit 04 may carry the handover type information and/or service type information supported by the access network side device in the registration request. Sent to the mobility management device.

The first transmitting unit 02 is responsible for transmitting a handover request message carrying handover type information to the mobility management device.

The foregoing handover types may include: access type RAT handover, system system handover, or circuit domain handover Circuit Switch.

FIG. 9 is a structural diagram of an apparatus for setting a UE according to an embodiment of the present invention. As shown in FIG. 9, the apparatus includes: a second determining unit 11 and a second sending unit 12, and further includes a second registration processing unit 13. The main functions of each component are as follows:

The second determining unit 11 is responsible for determining the switching type information.

When the UE determines the handover type information, it needs to know the handover type and service type supported by the access network side device. In the network registration process of the UE, the second registration processing unit 13 obtains the handover type information and/or the service type information supported by the network side from the mobility management device. Specifically, the second registration processing unit 13 may parse the handover type information and/or the service type information supported by the network side from the registration accept message sent by the mobility management device.

The second sending unit 12 is configured to send a service request that carries the handover type information, where the mobility management device may send the service request.

FIG. 10 is a structural diagram of a device installed in a mobility management device according to an embodiment of the present invention. As shown in FIG. 10, the device may include: a second receiving unit 21 and a switching triggering unit 22. Among them, the main functions of each component are as follows:

The second receiving unit 21 is responsible for receiving a handover request message, which can be sent by the access network side device.

When the handover trigger unit 22 parses the handover type information from the handover request message, the handover trigger unit 22 touches The switch indicated by the switch type information is sent.

If the handover type information is not resolved from the handover request, but the service type information is obtained by parsing, and the core network supports the service, the handover trigger unit 22 triggers the RAT handover; or

If the handover type information is not resolved from the handover request, but the service type information is parsed, and the core network supports the service and the user subscribes to the service, the handover trigger unit 22 triggers the RAT handover.

If the handover type information and the service type information are not resolved from the handover request message, and the mobility management device is connected to the target base station corresponding to the target base station identifier carried in the handover request message, the handover trigger unit 22 triggers the RAT handover.

If the foregoing situation is not satisfied, for example, the handover type information and the service type information are not resolved in the handover request message, and the target base station corresponding to the target base station identifier carried in the handover request message is not connected, the handover trigger unit 22 is not connected. Trigger system switching.

The foregoing handover types may include: an access type RAT handover, a system system handover, or a line handover Circuit Switch.

FIG. 11 is a structural diagram of another apparatus provided in a mobility management device according to an embodiment of the present invention. As shown in FIG. 11, the apparatus may include: a third receiving unit 31 and a third sending unit 32, and may further include a third Registration processing unit 33. The main functions of each component are as follows:

The third receiving unit 31 is responsible for receiving a service request that carries the handover type information sent by the UE. The service request is used to instruct the network side to perform the handover.

The third sending unit 32 is responsible for transmitting a handover request carrying the handover type information to the access network side device. After receiving the handover request message, the access network side device sends a handover request message to the mobility management device.

The third registration processing unit 33 is responsible for receiving the handover type information and/or the service type information supported by the access network side device sent by the access network side device in the network registration process of the UE; and the handover type information supported by the network side and/or Or service type information is sent to the UE. Specifically, the third registration processing unit 33 may receive the registration request sent by the access network side device, where the registration request carries the handover type information and/or the service type information supported by the access network side device, and sends a registration accept message to the UE, and the registration is accepted. The message carries handover type information and/or service type information supported by the network side.

It should be noted that the mobility management device can simultaneously include the device structure shown in FIG. 10 and FIG. 11 described above.

The foregoing device embodiments can be used for switching between different types of networks. For example, the present invention is applicable to switching from 5G to 4G. In this scenario, the mobility management device is an AMF device, and the access network side device is an NG-RAN. The target base station identifier carried in the handover request message is an identifier of the eNB. It is also applicable to the handover from 4G to 5G. The mobility management device in this scenario is the MME device, the access network side device is the E-UTRAN, and the target base station identifier carried in the handover request message is the identifier of the gNB.

The above method and apparatus provided by the embodiments of the present invention may be implemented by one or more integrated circuits, such as a codec chip, or by a program to instruct related hardware, and the program may be stored in a computer readable storage medium. Each unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

For example, it can be implemented by a device, which includes:

One or more processors;

Memory

One or more programs, the one or more programs being stored in the memory, executed by the one or more processors to:

The access network side device determines the handover type information;

For another example, being executed by the one or more processors to achieve the following operations:

The UE determines handover type information;

Sending a service request carrying the handover type information.

The mobility management device receives the handover request message;

The mobility management device receives a service request that is sent by the UE and carries the handover type information;

Sending a handover request carrying the handover type information to the access network side device.

In addition, with the development of time and technology, the meaning of the medium is more and more extensive, and the propagation route of the program is no longer limited by the tangible medium, and can also be downloaded directly from the network. Any combination of one or more computer readable media can be utilized. The computer readable medium can be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (non-exhaustive lists) of computer readable storage media include: electrical connections having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read only memory (ROM), Erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), Optical storage device, magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium can be any tangible medium that can contain or store a program, which can be used by or in connection with an instruction execution system, apparatus or device.

A computer readable signal medium may include a data signal that is propagated in the baseband or as part of a carrier, carrying computer readable program code. Such propagated data signals can take a variety of forms including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the foregoing. The computer readable signal medium can also be any computer readable medium other than a computer readable storage medium, which can transmit, propagate, or transport a program for use by or in connection with the instruction execution system, apparatus, or device. .

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are made within the spirit and principles of the present invention, should be included in the present invention. Within the scope of protection.

Claims

A method of mobility management, characterized in that the method comprises:

The access network side device determines the handover type information;

A handover request message carrying the handover type information is sent to the mobility management device.
The method according to claim 1, wherein the determining, by the access network side device, the handover type information comprises:

The access network side device determines the handover type information when the network side does not support the service requested by the UE.
The method according to claim 1, wherein the determining, by the access network side device, the handover type information comprises:

The access network side device receives a handover request message from the mobility management device, where the handover request message is sent by the mobility management device after receiving a service request message from the UE, where the service request message carries Switching type information;

The switching type information is parsed from the handover request message.
The method of claim 3, further comprising:

The access network side device sends the handover type information and/or the service type information supported by the access network side device to the mobility management device, and the mobility management device sends the information to the UE.
The method according to claim 4, wherein the transmitting the handover type information and/or the service type information supported by the access network side device to the mobility management device comprises:

The switch type information and/or service type information supported by the access network side device is carried in the registration request message and sent to the mobility management device.
A method according to any one of claims 1 to 5, wherein said cutting Types of change include:

Access type RAT switching, system system switching, or circuit domain switching Circuit Switch.
A method of mobility management, characterized in that the method comprises:

The UE determines handover type information;

Sending a service request message carrying the handover type information.
The method of claim 7 further comprising:

During the network registration process, the UE acquires handover type information and/or service type information supported by the network side from the mobility management device.
The method according to claim 8, wherein the obtaining, by the mobility management device, the handover type information supported by the access network side device comprises:

The UE parses the handover type information and/or the service type information supported by the network side from the registration accept message sent by the mobility management device.
The method of claim 7, 8 or 9, wherein said switching type comprises:

Access type RAT switching, system system switching, or circuit domain switching Circuit Switch.
A method of mobility management, characterized in that the method comprises:

The mobility management device receives the handover request message;

If the handover type information is parsed from the handover request message, the handover indicated by the handover type information is triggered.
The method of claim 11 further comprising:

If the handover type information is not parsed from the handover request message but the service type information is parsed and the core network supports the service, triggering the RAT handover; or

If the switching type information is not parsed from the handover request message, but parsed The RAT handover is triggered by the service type information, and the core network supports the service and the user subscribes to the service.
The method of claim 11 further comprising:

If the handover type information and the service type information are not resolved from the handover request message, and the mobility management device is connected to the target base station corresponding to the target base station identifier carried in the handover request message, the RAT handover is triggered.
The method of claim 11 further comprising:

If the handover type information and the service type information are not resolved from the handover request message, and the mobility management device is not connected to the target base station corresponding to the target base station identifier carried in the handover request message, the system handover is triggered.
The method according to claim 11, wherein the mobility management device is an AMF device, and the target base station identifier carried by the handover request message is an identifier of an eNB; or

The mobility management device is an MME device, and the target base station identifier carried by the handover request message is an identifier of the gNB.
The method according to any one of claims 11 to 15, wherein the switching type comprises:

Access type RAT switching, system system switching, or line switching Circuit Switch.
A method of mobility management, characterized in that the method comprises:

The mobility management device receives a service request message that is sent by the UE and carries the handover type information;

And transmitting, to the access network side device, a handover request message carrying the handover type information.
The method of claim 17, further comprising:

The mobility management device receives the access network side in the network registration process of the UE The switch type information and/or service type information supported by the access network side device sent by the device is sent to the UE by the switch type information and/or service type information supported by the network side.
The method according to claim 18, wherein the receiving the handover type information supported by the access network side device sent by the access network side device comprises: the mobility management device receiving the registration sent by the access network side device a request message, where the registration request message carries handover type information and/or service type information supported by the access network side device;

The sending the handover type information supported by the access network side device to the UE includes: the mobility management device sending a registration accept message to the UE, where the registration accept message carries the handover type information supported by the network side and/or Or business type information.
A device for mobility management is provided on an access side device, and the device includes:

a first determining unit, configured to determine switching type information;

And a first sending unit, configured to send, to the mobility management device, a handover request message that carries the handover type information.
The apparatus according to claim 20, wherein the first determining unit determines the handover type information when the access network side device detects that the network side does not support the service requested by the UE.
The device of claim 20, further comprising:

a first receiving unit, configured to receive a handover request message from the mobility management device, where the handover request message is sent by the mobility management device after receiving a service request message from the UE, where the service request message carries Switching type information;

The first determining unit parses the handover type information from the handover request message.
The device of claim 22, further comprising:

The first registration processing unit is configured to send the handover type information and/or the service type information supported by the access network side device to the mobility management device during the network registration process of the UE, and send the mobility management device to the UE.
The device according to claim 23, wherein the first registration processing unit is configured to carry the handover type information and/or service type information supported by the access network side device in a registration request message and send the message to the mobile device. Sexual management equipment.
The apparatus according to any one of claims 20 to 24, wherein the switching type comprises:

Access type RAT switching, system system switching, or circuit domain switching Circuit Switch.
A device for mobility management is provided in a UE, where the device includes:

a second determining unit, configured to determine switching type information;

The second sending unit is configured to send a service request message that carries the handover type information.
The device of claim 26, further comprising:

And a second registration processing unit, configured to acquire, from the mobility management device, handover type information and/or service type information supported by the network side during the network registration process.
The device according to claim 27, wherein the second registration processing unit is configured to parse the handover type information and/or service type information supported by the network side from the registration accept message sent by the mobility management device. .
The apparatus according to claim 26, 27 or 28, wherein said switching type comprises:

Access type RAT switching, system system switching, or circuit domain switching Circuit Switch.
A device for mobility management is provided in a mobility management device, characterized in that the device comprises:

a second receiving unit, configured to receive a handover request message;

And a handover triggering unit, configured to trigger a handover indicated by the handover type information if the handover type information is parsed from the handover request message.
The device according to claim 30, wherein the handover triggering unit is further configured to: if the handover type information is not parsed from the handover request message, but parse the service type information, and the core network supports The service triggers a RAT handover; or,

If the handover type information is not parsed from the handover request message, but the service type information is parsed, and the core network supports the service and the user subscribes to the service, the RAT handover is triggered.
The device according to claim 30, wherein the handover triggering unit is further configured to: if the handover type information and the service type information are not parsed from the handover request message, and the mobility management device and the device The RAT handover is triggered when the target base station connection corresponding to the target base station identifier carried in the handover request message is connected.
The device according to claim 30, wherein the handover triggering unit is further configured to: if the handover type information and the service type information are not parsed from the handover request message, and the mobility management device and the device If the target base station corresponding to the target base station identifier carried in the handover request message is not connected, the system handover is triggered.
The device according to claim 30, wherein the mobility management device is an AMF device, and the target base station identifier carried by the handover request message is an identifier of an eNB; or

The mobility management device is an MME device, and the handover request message carries a target The base station identifier is the identifier of the gNB.
The apparatus according to any one of claims 30 to 34, wherein the switching type comprises:

Access type RAT switching, system system switching, or line switching Circuit Switch.
A device for mobility management is provided in a mobility management device, characterized in that the device comprises:

a third receiving unit, configured to receive a service request message that is sent by the UE and carries the handover type information;

And a third sending unit, configured to send, to the access network side device, a handover request message that carries the handover type information.
The device of claim 36, further comprising:

a third registration processing unit, configured to receive, in a network registration process of the UE, handover type information and/or service type information supported by an access network side device sent by an access network side device; Information and/or service type information is sent to the UE.
The device according to claim 37, wherein the third registration processing unit is configured to receive a registration request message sent by the access network side device, where the registration request message carries a handover supported by the access network side device. Type information and/or service type information; sending a registration accept message to the UE, the registration accept message carrying handover type information and/or service type information supported by the network side.
a device, including

One or more processors;

Memory

One or more programs, the one or more programs being stored in the memory, The operations in the method of any of claims 1 to 19 are performed by the one or more processors.
A storage medium comprising computer executable instructions for performing the operations of the method of any one of claims 1 to 19 when executed by a computer processor.