CN108289319A

CN108289319A - Select method, cut-in method and device, the equipment of core net access-in management network element

Info

Publication number: CN108289319A
Application number: CN201710538833.7A
Authority: CN
Inventors: 李志军; 衡正国
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-07-04
Filing date: 2017-07-04
Publication date: 2018-07-17
Anticipated expiration: 2037-07-04
Also published as: CN108289319B

Abstract

A kind of selection method, cut-in method and the device of core net access-in management network element, equipment, network node obtain the virtualization attribute of access-in management network element, and it is physical NE or Virtual NE that the virtualization attribute, which is used to indicate access-in management network element,；Virtualization attribute of the network node based on the access-in management network element selects access-in management network element for user equipment (UE).When UE access, the access preference information of configuration is first obtained, the access preference information includes the virtualization attribute of access-in management network element；When the UE sends radio connection request to wireless base station, the access preference information is carried.The application makes when UE is linked into core net by wireless base station, can be assigned to UE on suitable access-in management network element.

Description

Select method, cut-in method and device, the equipment of core net access-in management network element

Technical field

The present invention relates to field of communication technology, more particularly, to a kind of method of selection core net access-in management network element, Cut-in method and corresponding device, equipment.

Background technology

According to 3GPP (3rd Generation Partnership Project, third generation partner program) standard work The definition of work group, 4G systems include wireless subsystem LTE (Long Term Evolution, long evolving system), core net System EPS (Evolved Packet System, evolution grouping domain system).

Fig. 1 is the configuration diagram of 4G systems.Wherein, wireless subsystem part includes mainly E-UTRAN (Evolved Universal Terrestrial Radio Access Network, the universal terrestrial access network of evolution).Core net Subsystem partitions, also referred to as EPC (Evolved Packet Core, the packet-based core networks of evolution).Include mainly HSS (Home Subscriber Server, home subscriber data server), MME (Mobility Management Entity, mobility pipe Manage unit), S-GW (Serving Gateway, gateway), P-GW (PDN Gateway, grouped data network gateway), PCRF (Policy and Charging Enforcement Function, strategy and charging regulation function entity), wherein：

HSS(Home Subscriber Server)：Home subscriber data server is that the permanent of user contracting data is deposited Place is put, the home network of user's signing is located at；

MME(Mobility Management Entity)：Mobile management network element is user contracting data in current net The storage place of network is responsible for NAS layers (Non-Access Stratum, Non-Access Stratum) signaling management, the user of terminal to network Tracking and paging management function under idle mode and bearer management；

S-GW (Serving Gateway, gateway)：Gateway is gateway of the core net to wireless system, is responsible for The function of data buffer storage, network side initiating business request under terminal to the user plane bearer of core net, terminal idle mode is closed Method is eavesdropped and packet routing and forwarding capability；

P-GW(PDN Gateway)：Grouped data network gateway is outside the grouping domain system (EPS) and the system of evolution The gateway of portion's network is responsible for the IP address distribution of terminal, billing function, is grouped the functions such as packet filtering, strategy application.

PCRF(Policy and Charging Enforcement Function)：Strategy is real with charging rule functions Body is responsible for providing policy control and charging regulation to PCEF.

At the beginning of forth generation communication system (4G) designs, each network element in core network subsystem EPS is implemented as specially The physical NE of door, i.e. network element are made of specially designed hardware and software.But with the development of common hardware technology, software Technology especially virtualizes the development of (Virtualization) technology, and industry proposition can pass through the skills such as cloud computing, virtualization Art means construct Virtual NE.The essence of Virtual NE is the set of one group of mutually matched software, completes physical NE institute The function of realization.By means of the development of cloud computing and virtualization technology, virtualization network element compares physical NE, has flexible portion Administration upgrades the characteristics of convenient, elastic dilatation.But the characteristics of due to virtualization technology itself, Virtual NE are limited by virtualization With the development of container technique physical NE is all inferior in performance and stability.

The characteristics of in view of virtualization network element, it is however generally that, equipment vendor can be directed to the network elements such as MME, HSS, PCRF and release void Quasi-ization network element, and to IO and network interface card performance requirement very high SGW, PGW, still use physical NE.

The mentality of designing of virtualization is also used in the design of 5G systems.3GPP thinks, in 5G systems, network element work( Physical NE can be both can be implemented as, Virtual NE can also be embodied as, depending on the design of distinct device manufacturer.

Fig. 2 is the configuration diagram of 5G systems.Wherein, wireless subsystem part, include mainly NR (New Radio, new one For wireless base station).Core network subsystem part, also referred to as NGC (New Generation Core, core net of new generation). In NGC core nets, including UDM (Unified Data Management, uniform data management function), AMF (Access Management Function, access management function), SMF (Session Management Function, session management work( Can), UPF (User Plane Function, user plane functions), PCF (Policy Control Function, policy control Function), wherein：

UDM(Unified Data Management)：Uniform data management function is that the permanent of user contracting data is deposited Place is put, the home network of user's signing is located at；

AMF(Access Management Function)：Access management function, to user be linked into the demand of network into NAS layers (Non-Access Stratum, Non-Access Stratum) signaling management, the user mobility of terminal to network are responsible in row management The functions such as management；

SMF(Session Management Function)：Conversation management functional manages the PDU (Packet of user Data Unit, Packet Data Unit) session, QoS flow, formulate packet detection and forward rule etc. for UPF；

UPF(User Plane Function)：User plane functions, responsible IP data, the routing of non-IP data and forwarding, Dosage such as reports at the functions.

PCF(Policy Control Function)：Policy control functions are responsible for AMF, SMF and provide each level policy Rule.

Network described herein includes but not limited to 4G systems and 5G systems, and " wireless base station " includes but not limited to 4G In eNodeB and 5G in NR." access-in management network element " includes but not limited to the AMF in MME, 5G in 4G.

In actual operations, according to the needs of e-learning quality, in the same carrier network, physics may be disposed simultaneously Network element and virtualization network element, as shown in Fig. 3 A, 3B.

In network deployment shown in Fig. 3 A, 3B, when UE requests are linked into network, wireless base station (eNodeB, NR) basis The information such as the band of position of access-in management network element (MME, AMF) list, UE access for itself being configured select access-in management net First (MME, AMF).In this selection, wireless base station (eNodeB, NR) is not relevant for selected access-in management network element (MME, AMF) It is physical NE or Virtual NE.

In view of virtualization technology is developing always, Virtual NE is for meeting the business of high reliability, large capacity still It is short of.From the angle of operation management, operator may want to the preferred access-in management network element in wireless base station (eNodeB, NR) (MME, AMF) is physical NE, when the access-in management network element as physical NE reaches expected load, just selects virtual net Member.On the other hand, operator wishes the type (such as people's network termination) according to UE, by certain UE preferably up to physical NEs, and it is right Some unessential UE types (such as non-security class internet-of-things terminal), are assigned in the virtual network of customization.

Using the prior art, when disposing physical NE and Virtual NE simultaneously in core net, due to wireless base station (eNodeB, NR) can not know that access-in management network element (MME, AMF) is physical NE or Virtual NE, so can not be excellent by UE It chooses on physical NE, to cannot be satisfied the demand that UE is preferentially assigned on physical NE and be distributed by UE types The demand that physical NE or Virtual NE etc. selectively access.

Invention content

In view of this, an embodiment of the present invention provides a kind of methods of selection core net access-in management network element, including：

Network node obtains the virtualization attribute of access-in management network element, and the virtualization attribute is used to indicate access-in management net Member is physical NE or Virtual NE；

Virtualization attribute of the network node based on the access-in management network element selects access-in management for user equipment (UE) Network element.

In view of this, the embodiment of the present invention additionally provides a kind of device of selection core net access-in management network element, including：

Attribute acquisition module, the virtualization attribute for obtaining access-in management network element, the virtualization attribute are used to indicate Access-in management network element is physical NE or Virtual NE；

Network element selecting module is used for the virtualization attribute based on the access-in management network element, is connect for user equipment (UE) selection Enter managed network element.

In view of this, the embodiment of the present invention additionally provides a kind of wireless base station, including memory, processor and it is stored in institute The computer program that can be run on memory and on the processor is stated, the processor executes real when the computer program Now following processing：

The virtualization attribute of access-in management network element is obtained, it is physics that the virtualization attribute, which is used to indicate access-in management network element, Network element or Virtual NE；

Based on the virtualization attribute of the access-in management network element, access-in management network element is selected for user equipment (UE).

In view of this, the embodiment of the present invention additionally provides a kind of access-in management network element, including memory, processor and storage On the memory and the computer program that can run on the processor, the processor execute the computer program Shi Shixian or less is handled：

Said program makes when UE is linked into core net by wireless base station, and UE can be assigned to suitable access tube It manages on network element.

In view of this, an embodiment of the present invention provides a kind of cut-in methods of user equipment (UE), including：

UE obtains the access preference information of configuration, and the access preference information includes the virtualization category of access-in management network element Property, it is physical NE or Virtual NE that the virtualization attribute, which is used to indicate access-in management network element,；

When the UE sends radio connection request to wireless base station, the access preference information is carried.

In view of this, the embodiment of the present invention additionally provides a kind of access device of user equipment (UE), including：

Data obtaining module, the access preference information for obtaining configuration, the access preference information include access-in management The virtualization attribute of network element, it is physical NE or Virtual NE that the virtualization attribute, which is used to indicate access-in management network element,；

Request sending module carries the access preference information when for sending radio connection request to wireless base station.

In view of this, the embodiment of the present invention additionally provides a kind of user equipment, including memory, processor and it is stored in institute The computer program that can be run on memory and on the processor is stated, the processor executes real when the computer program Now following processing：

The access preference information of configuration is obtained, the access preference information includes the virtualization attribute of access-in management network element, It is physical NE or Virtual NE that the virtualization attribute, which is used to indicate access-in management network element,；

When sending radio connection request to wireless base station, the access preference information is carried.

Said program makes when UE is linked into core net by wireless base station, can actively provide access preference information, Access-in management network element is selected to provide foundation for network side equipment.

Description of the drawings

Fig. 1 is the configuration diagram of 4G systems in the prior art；

Fig. 2 is 5G system architecture schematic diagrams in the prior art；

Fig. 3 is in same Operator Core Network while to dispose the schematic diagram of physical NE and Virtual NE；

Fig. 4 is the flow chart for the method that the embodiment of the present invention one selects core net access-in management network element；

Fig. 5 is the module map for the device that the embodiment of the present invention one selects core net access-in management network element；

Fig. 6 is that two eNodeB of the embodiment of the present invention is the signaling process figure that UE selects MME；

Fig. 7, Fig. 8 and Fig. 9 are three kinds of illustrative letters of the virtualization attribute that two eNodeB of the embodiment of the present invention obtains MME Enable flow chart；

Figure 10 is the signaling process figure that three initial MME of the embodiment of the present invention is UE gravity treatments MME；

Figure 11 is that four eNodeB of the embodiment of the present invention is the signaling process figure that UE selects MME；

Figure 12 is the signaling process figure that five initial MME of the embodiment of the present invention is UE gravity treatments MME；

Figure 13 is the flow chart of six UE access method of the embodiment of the present invention；

Figure 14 is the module map of six UE of the embodiment of the present invention.

Specific implementation mode

To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application Feature mutually can arbitrarily combine.

Embodiment one

The present embodiment provides a kind of methods of selection core net access-in management network element, as shown in figure 4, including：

Step 110, network node obtains the virtualization attribute of access-in management network element, and the virtualization attribute, which is used to indicate, to be connect It is physical NE or Virtual NE to enter managed network element；

Selection core net access-in management network element can (first receives UE by wireless base station or initial access managed network element NAS message access net managed network element) execute.

In one example, the network node be wireless base station, the wireless base station in the following manner at least A kind of virtualization attribute obtaining access-in management network element：

The wireless base station obtains access-in management net by the connection building process between wireless base station and access-in management network element The virtualization attribute of member；

The base station reconfiguration response message that the wireless base station is returned according to access-in management network element obtains access-in management net The virtualization attribute of member；

The access-in management network element reconfiguration request message that the wireless base station is sent according to access-in management network element obtains access The virtualization attribute of managed network element.

In another example, the network node may be initial access managed network element.The initial access management Network element obtains the virtualization attribute of access-in management network element, including：The initial access managed network element passes through between access-in management network element Interaction flow, obtain candidate access-in management network element set in access-in management network element virtualization attribute.

Step 120, virtualization attribute of the network node based on the access-in management network element selects for user equipment (UE) Access-in management network element.

Virtualization attribute of the network node based on the access-in management network element selects access-in management network element, packet for UE It includes：Virtualization attribute of the network node based on the access-in management network element, in conjunction with network preference policy, the UE classes of the UE It is one or more in type and the access preference information of the UE, select access-in management network element for the UE.

In one example, the network node is wireless base station, and the wireless base station is based on the access-in management network element Virtualization attribute, for UE select access-in management network element, including：

One of after the wireless base station receives radio connection request message such as the RRC information of UE transmissions, in the following way Access-in management network element is selected for the UE：

Mode one, according to the setting of network preference policy, if should be preferably described by UE priority access to physical NE UE selects virtualization attribute for the access-in management network element of physical NE, if should be preferably by UE priority access to Virtual NE The UE selects virtualization attribute for the access-in management network element of Virtual NE；

Mode two obtains the UE types of the UE, according to network preference policy from the radio connection request message Setting, if should be preferably the UE selections virtualization attribute by the UE priority access with the UE types to physical NE For the access-in management network element of physical NE, if should be preferably by the UE priority access with the UE types to Virtual NE The UE selects virtualization attribute for the access-in management network element of Virtual NE；

Mode three obtains the access preference information of the UE, according to the access from the radio connection request message The setting of preference information, if must be by UE access to physical NE, it be physical NE to select virtualization attribute for the UE Access-in management network element, if must virtualization attribute connecing for Virtual NE be selected for the UE for UE access to Virtual NE Enter managed network element, if should be preferably that the UE selects to virtualize attribute to be physical NE by UE priority access to physical NE Access-in management network element, if should by UE priority access to Virtual NE, be preferably the UE select virtualization attribute be virtual The access-in management network element of network element.

In another example, the network node is to be initially accessed managed network element, the initial access managed network element base In the virtualization attribute of the access-in management network element, access-in management network element is selected for UE, including：

After the Non-Access Stratum NAS access requests for the UE that the initial access managed network element receives wireless base station forward, One of in the following way access-in management network element is selected for the UE：

Mode A, according to the setting of network preference policy, if should be preferably described by UE priority access to physical NE UE selects virtualization attribute for the access-in management network element of physical NE, if should be preferably by UE priority access to Virtual NE The UE selects virtualization attribute for the access-in management network element of Virtual NE；

Mode B obtains the UE types of the UE from user-subscribed database, according to the setting of network preference policy, if answering Then it is preferably that the UE selects to virtualize attribute to be physical NE by the UE priority access with the UE types to physical NE Access-in management network element, if should be preferably UE selection by the UE priority access with the UE types to Virtual NE Virtualize the access-in management network element that attribute is Virtual NE；

Mode C obtains the access preference letter of the UE from the message of NAS access requests described in the wireless base station forward Breath, according to the setting of the access preference information, if virtualization must be selected to belong to for the UE UE access to physical NE Property be the access-in management network element of physical NE, if must attribute be virtualized for UE selections for UE access to Virtual NE For the access-in management network element of Virtual NE, if should be preferably the UE selections virtualization by UE priority access to physical NE Attribute is the access-in management network element of physical NE, if should be preferably that the UE selections are empty by UE priority access to Virtual NE Quasi-ization attribute is the access-in management network element of Virtual NE；

Mode D, the access network element that the UE is obtained from user-subscribed database select information, are selected according to the access network element The setting of information is selected, if must virtualization attribute connecing for physical NE be selected for the UE for UE access to physical NE Enter managed network element, if virtualization attribute must be selected for the access of Virtual NE for the UE UE access to Virtual NE Managed network element, if should be preferably that the UE selects to virtualize attribute to be physical NE by UE priority access to physical NE Access-in management network element, if should be preferably that the UE selects to virtualize attribute to be virtual net by UE priority access to Virtual NE The access-in management network element of member.

Be preferably UE selection have it is a certain virtualization attribute access-in management network element when, if due to load etc. without Method is linked into the access-in management network element with the virtualization attribute, and network node may be UE selections, and there is another virtualization to belong to The access-in management network element of property.If must by UE access to it is a certain virtualization attribute access-in management network element when, if because It can not be linked into the access-in management network element with the virtualization attribute for reasons such as loads, network node can return to access failure.

The present embodiment additionally provides a kind of device of selection core net access-in management network element, as shown in figure 5, including：

Attribute acquisition module 10, the virtualization attribute for obtaining access-in management network element, the virtualization attribute is for referring to Show that access-in management network element is physical NE or Virtual NE；

Network element selecting module 20 is used for the virtualization attribute based on the access-in management network element, is selected for user equipment (UE) Access-in management network element.

In the present embodiment, virtualization attribute of the network element selecting module based on the access-in management network element selects for UE Access-in management network element, including：Based on the virtualization attribute of the access-in management network element, in conjunction with network preference policy, the UE It is one or more in the access preference information of UE types and the UE, select access-in management network element for the UE.

In one example, described device be arranged in wireless base station, the attribute acquisition module in the following manner in At least one virtualization attribute for obtaining access-in management network element：

In one example, described device is arranged in wireless base station, and the network element selecting module is based on the access-in management The virtualization attribute of network element, when selecting access-in management network element for user equipment (UE), including：Receive the radio connection request of UE transmissions After message, a kind of mode in one to mode three is that the UE selects access-in management network element in above-described manner.

In another example, described device is arranged in being initially accessed managed network element, and the network element selecting module is based on institute The virtualization attribute of access-in management network element is stated, access-in management network element is selected for UE, including：Receive the UE of wireless base station forward Non-Access Stratum NAS access requests after, in above-described manner a kind of mode in A to mode D be UE select access tube Manage network element.

The present embodiment additionally provides a kind of computer readable storage medium, is stored thereon with computer program, wherein described Following processing is realized when computer program is executed by processor：

The computer program can also realize any processing in the present embodiment method when being executed by processor, here not It repeats one by one again.

The present embodiment additionally provides a kind of wireless base station, including memory, processor and is stored on the memory simultaneously The computer program that can be run on the processor, wherein the processor is realized following when executing the computer program Processing：

In the present embodiment, the virtualization attribute for obtaining access-in management network element, including：

By the connection building process between wireless base station and access-in management network element, the virtualization category of access-in management network element is obtained Property；

The base station reconfiguration response message returned according to access-in management network element obtains the virtualization category of access-in management network element Property；

According to the access-in management network element reconfiguration request message that access-in management network element is sent, the void of access-in management network element is obtained Quasi-ization attribute.

In the present embodiment, based on the virtualization attribute of the access-in management network element, access-in management network element, packet are selected for UE It includes：Based on the virtualization attribute of the access-in management network element, in conjunction with network preference policy, the UE types of the UE and the UE Access preference information in it is one or more, for the UE select access-in management network element.It specifically may be used described above A kind of mode in mode one to mode three is that the UE selects access-in management network element.

The present embodiment additionally provides a kind of access-in management network element, including memory, processor and is stored in the memory Computer program that is upper and can running on the processor, wherein the processor is realized when executing the computer program It handles below：

In the present embodiment, the virtualization attribute for obtaining access-in management network element, including：By between access-in management network element Interaction flow obtains the virtualization attribute of access-in management network element in candidate access-in management network element set.

In the present embodiment, based on the virtualization attribute of the access-in management network element, access-in management network element, packet are selected for UE It includes：Based on the virtualization attribute of the access-in management network element, in conjunction with network preference policy, the UE types of the UE and the UE Access preference information in it is one or more, for the UE select access-in management network element.It specifically may be used described above A kind of mode in mode A to mode D is that the UE selects access-in management network element.

Embodiment two

In the present embodiment, UE request access networks, wireless base station is that UE selects access-in management network element.

When Fig. 6 is that the present embodiment UE requests are linked into 4G networks, eNodeB is the signaling process that UE selects MME, including：

401, UE initiate RRC connection request to eNodeB, wherein carrying NAS access requests；

402, eNodeB select MME according to the virtualization attribute and network preference policy of acquired MME, for UE；

403, eNodeB send initial context request message to selected MME, carry NAS access requests；

404, MME send position updating request to HSS；

405, HSS update to UE return positions, wherein carry the subscription data of UE；

406, MME select SGW/PGW for UE, and initiate session establishment request to SGW/PGW；

407, SGW/PGW ask according to session establishment, and PDN connections are established for UE, return to session establishment response；

408, MME return to initial context response message to eNodeB, wherein carrying NAS access responses；

409, eNodeB return to RRC connection responses to UE, wherein carrying NAS access responses.

In above-mentioned steps 402, eNodeB can obtain the virtualization of MME from the local MME lists being such as locally stored Attribute.It is physics MME or virtual MME that the virtualization attribute of MME, which is used to indicate MME,.

In the present embodiment, eNodeB is when selecting MME, according to the setting of network preference policy, if should be by UE priority access Then it is preferably the MME that the UE selects virtualization attribute as physical NE to physical NE, if should be by UE priority access to virtually Network element is preferably then the MME that the UE selects virtualization attribute as Virtual NE.

In another embodiment, eNodeB first obtains the UE when selecting MME from the radio connection request message UE types, according to the setting of network preference policy, if should by the UE priority access with the UE types to physical NE, It is preferably the access-in management network element that the UE selects virtualization attribute as physical NE, if should be excellent by the UE with the UE types It is first linked into Virtual NE, then is preferably the access-in management network element that the UE selects virtualization attribute as Virtual NE.

Signaling process shown in fig. 6 is so that UE requests are linked into 4G networks as an example, and eNodeB is virtual according to the MME's of acquisition Change attribute and network preference policy, MME is selected for UE.The signaling process applies generally to the field that UE requests are linked into 5G networks Scape, but the network node title in 4G and 5G is different, and the eNodeB of 4G need to be replaced with to the MME of the radio node NR, 4G in 5G The AMF in 5G is replaced with, the HSS of 4G replaces with the UDM in 5G, and the SGW/PGW in 4G replaces with the SMF/UPF in 5G.In addition, If UE is to be linked into 4G networks, the NAS access requests in Fig. 4 flows are attach request (Attach Request), NAS accesses Response is attachment response (Attach Response).If UE is to be linked into 5G networks, the NAS access requests in Fig. 4 flows are Registration request (Register Request), NAS access responses are registration responses (Register Response).Different There is also no longer go to live in the household of one's in-laws on getting married the difference of nodename and message name under network environment one by one in other signaling processes of the application It states.

The virtualization attribute for the MME that eNodeB is locally stored can be that network management system configures, and can also be eNodeB logical Cross what MME of the interaction flow out of list was obtained.The interaction flow can be S1 connection building process, eNodeB configuration updates Flow, MME configurations more new technological process etc..

ENodeB obtains the virtualization attribute of MME by interaction flow from MME, can use method shown in Fig. 5,6,7, Or other similar approach.In local preservation after eNodeB obtains the virtualization attribute of MME from MME, including but not limited to preserve In MME lists.Thereafter, eNodeB can use the virtualization attribute of preserved MME, and MME is selected for UE.

Fig. 7 is one of the method for the virtualization attribute that the present embodiment eNodeB obtains MME, and eNodeB is established by S1 connections Process obtains the virtualization attribute of MME from MME when establishing S1 with MME and connecting.

As shown in fig. 7, the flow includes：

501, eNodeB send S1 connections to MME establishes request message.Optionally, S1 connections, which are established in request message, carries Virtualize attribute query instruction；

502, according to the request of eNodeB, MME establishes S1 connections, and returns to S1 connection establishment response message to eNodeB, Carry the virtualization attribute of this MME.

In this step, the virtualization attribute query that MME can be carried according to eNodeB in the message that step 501 is sent Instruction determines the virtualization attribute for returning to this MME.Alternatively, unconditionally returning to the virtualization attribute of MME.

503, eNodeB preserve the virtualization attribute of the MME in S1 connection establishment response message.

Fig. 8 is that two, eNodeB of the method for the virtualization attribute that the present embodiment eNodeB obtains MME is configured by eNodeB Renewal process obtains the virtualization attribute of MME from MME when sending newer eNodeB configuration informations to MME.

As shown in figure 8, the flow includes：

601, eNodeB send eNodeB configuration update request messages to MME.Optionally, update request is configured in eNodeB Virtualization attribute query instruction is carried in message；

602, MME return to eNodeB configuration update response messages to eNodeB, carry the virtualization attribute of this MME；

Virtualization attribute similar with method one, that MME can be carried according to eNodeB in the message that step 601 is sent Inquiry instruction determines the virtualization attribute for returning to this MME.Alternatively, unconditionally returning to the virtualization attribute of MME.

603, eNodeB preserve the virtualization attribute of the MME in eNodeB configuration update response messages.

Fig. 9 is that three, eNodeB of the method for the virtualization attribute that the present embodiment eNodeB obtains MME is initiated by MME MME configures renewal process, and the virtualization attribute of MME is obtained from MME.

As shown in figure 9, the flow includes：

701, MME send MME configuration update request messages to eNodeB, carry the virtualization attribute of this MME；

702, eNodeB return to MME configuration update response messages；

703, eNodeB preserve the virtualization attribute of the MME in MME configuration update request messages.

In the flow shown in Fig. 5,6,7, MME can be come using a special weight factor (Weight Factor) Indicate that the virtualization attribute of MME is Virtual NE.Such as：Weight Factor are set as -1, for indicating that the MME is empty Quasi- network element.

Embodiment three

In the present embodiment, UE request access networks, initial MME is UE gravity treatments MME.

As shown in Figure 10, the present embodiment has following steps：

801, UE initiate RRC connection request to eNodeB, wherein carrying NAS access requests；

802, eNodeB select initial MME, i.e. MME1 in Fig. 8 for UE, and initial context request message is sent to MME1, Carry NAS access requests；

Initial MME is first MME for receiving NAS access requests, and initial MME can be a specific MME, this MME has the information of other MME, and this MME can execute redirection process.Initial MME may not be specific MME, multiple MME is reciprocity, can complete the function of initial MME.

803, MME1 send authentication request to HSS；

804, HSS return to Authentication Response to MME1, wherein carry the information of the UE types of UE；

805, MME1 be UE gravity treatment MME, in this step, it is assumed that gravity treatment MME2；

Figure 10 is for choosing MM2, if the MME of gravity treatment is MME1, step 806,807 can be omitted, by MME1 executes step 808 and its relevant action later.

806, MME1 send redirection message to eNodeB, carry the information of MME2；

After 807, eNodeB receive the redirection message of MME, initial context solicited message is initiated to MME2, carries NAS Access request；

808, MME2 send position updating request to HSS；

809, HSS update to MME2 return positions, wherein carry the subscription data of UE；

810, MME2 select SGW/PGW for UE, and initiate session establishment request to SGW/PGW；

The flow of selection SGW and PGW is referred to pertinent literature.

811, SGW/PGW ask according to session establishment, and PDN connections are established for UE, return to session establishment response；

812, MME2 return to initial context response message to eNodeB, wherein carrying NAS access responses；

813, eNodeB return to RRC connection responses to UE, wherein carrying NAS access responses；

In flow shown in Fig. 10, in step 805, initial MME according to network preference policy, UE type information, The virtualization attribute of MME in candidate MME lists is UE gravity treatments MME.Gravity treatment MME also belongs to a kind of field that the application selects MME Scape.Wherein, candidate MME lists can be stored on initial MME, can also be that initial MME is obtained from configuration database.It is waiting It selects in MME lists, MME is labeled with virtualization attribute, which indicates that network element is physical NE or Virtual NE.Initially MME can obtain the virtualization attribute of MME in candidate MME lists by the interaction flow between MME, and this attribute is stored in In MME lists.For example, between MME when interaction UE context datas, the virtualization attribute of itself can be supplied to by a MME Another MME.The virtualization attribute of MME can support 1 bit in feature list to indicate using MME.Thereafter, just Beginning MME can use the virtualization attribute of preserved MME, be UE gravity treatments MME.In other examples, initial MME can also lead to The mode for crossing network management system configuration obtains the virtualization attribute of MME in candidate MME lists.

In the present embodiment, when initial MME gravity treatments MME, according to the setting of network preference policy, if should will have the UE classes The UE priority access of type is then preferably the access-in management net that the UE selects virtualization attribute as physical NE to physical NE Member, if should by the UE priority access with the UE types to Virtual NE, be preferably the UE select virtualization attribute for The access-in management network element of Virtual NE.Network preference policy is such as configurable to, and people's network termination (Human Network UE) is answered Priority access physical NE, internet-of-things terminal (MTC UE) answer priority access Virtual NE.

In another embodiment, initial MME need not obtain the information of UE types to HSS, and correlation step can be omitted.Just When beginning MME gravity treatment MME, according to the setting of network preference policy, if should be preferably described by UE priority access to physical NE UE selects virtualization attribute for the access-in management network element of physical NE, if should be preferably by UE priority access to Virtual NE The UE selects virtualization attribute for the access-in management network element of Virtual NE.

Network preference policy is used to be arranged the virtualization attribute for the access-in management network element that UE answers priority access to arrive, can be direct UE priority access to physical NE or Virtual NE should be can also be that be respectively set according to condition such as UE types should be by UE by setting Priority access is to physical NE or Virtual NE.And both set-up modes can also be and deposit, for example, getting the UE of UE It is UE selection access-in management network elements according to the above-mentioned network preference policy being respectively set according to UE types when type, and It is that the UE selects access-in management net according to the above-mentioned network preference policy being directly arranged when not getting the UE types of UE Member.

In another embodiment, in the step 804 of flow shown in Fig. 8, it is replaced in the type information for returning to UE, HSS is also The access network element selection information in user contracting data can be returned.Access network element selection information could be provided as essential (or excellent Choosing) physical NE or Virtual NE.In step 805, initial MME can select access tube for the UE one of in the following manner Manage network element：

The setting of information is selected according to the access network element, if must select UE access to physical NE for the UE The access-in management network element that virtualization attribute is physical NE is selected, if must select UE access to Virtual NE for the UE The access-in management network element that attribute is Virtual NE is virtualized, if should be preferably the UE by UE priority access to physical NE Select virtualization attribute for the access-in management network element of physical NE, if should be preferably institute by UE priority access to Virtual NE State the access-in management network element that UE selects virtualization attribute as Virtual NE.

It should be noted that the setting of access network element selection information can be there are two option, such as essential physical NE and must Select Virtual NE, or preferably physical NE and preferred Virtual NE.There can also be 4 options, i.e., it is essential physical NE, essential Virtual NE, preferably physical NE and preferred Virtual NE,

Example IV

In the present embodiment, UE requests provide access preference information when being linked into network, wireless base station connects according to what UE was provided Enter preference information, MME is selected for UE.

Figure 11 be UE access to 4G networks when, eNodeB be UE select MME signaling process, including：

901, UE initiate RRC connection request to eNodeB, wherein carrying NAS access requests；

In this step, the access preference information of UE is carried in RRC connection request, which can be used as network UE selects the foundation of MME.

902, eNodeB according to UE access preference information and acquisition MME virtualization attribute, for UE select MME；

903, eNodeB send initial context request message to selected MME, carry NAS access requests；

904, MME send position updating request to HSS；

905, HSS update to UE return positions, wherein carry the subscription data of UE；

906, MME select SGW/PGW for UE, and initiate session establishment request to SGW/PGW；

907, SGW/PGW ask according to session establishment, and PDN connections are established for UE, return to session establishment response；

908, MME return to initial context response message to eNodeB, wherein carrying NAS access responses；

909, eNodeB return to RRC connection responses to UE, wherein carrying NAS access responses；

In the flow shown in Figure 11, in step 901, the access preference information that UE is provided can be following arbitrary One of：

The essential instruction of access network element, instruction expression are necessary for UE selection physical NEs or Virtual NE.

Access network element preferably indicates that instruction expression should be the preferred physical NEs of UE or Virtual NE.

In the present embodiment, when wireless base station selects MME, according to the setting of the access preference information, if UE must be connect Enter to physical NE, then selects virtualization attribute for the access-in management network element of physical NE for the UE, if must be by UE access To Virtual NE, then select virtualization attribute for the access-in management network element of Virtual NE for the UE, if should be by UE priority access Then it is preferably the access-in management network element that the UE selects virtualization attribute as physical NE, if should be preferential by UE to physical NE It is linked into Virtual NE, then is preferably the access-in management network element that the UE selects virtualization attribute as Virtual NE.

In 5G systems, UE can will access preference information, be included in network slice selection information.It specifically, can be with By the specified slice subtype with specific meanings, the network element in slice network to explicitly indicate that the subtype is physics Network element or Virtual NE.Alternatively, in slice selects information, clearly addition accesses preference information, indicates how selection Physical Network Member or Virtual NE.Wherein, slice is for selecting a sub-network, a sub-network to be properly termed as a slice, can such as wrap It includes：AMF, SMF, UPF, UDM, PCF, it might even be possible to including wireless base station.Slice type is used to describe the major class of slice, slice Type is for describing the subtype in the case where being sliced major class.Such as：Slice type：Internet of Things is sliced subtype：Water power gas meter copying Internet of Things, shared bicycle Internet of Things.

Embodiment five

In the present embodiment, UE provides access preference information when request is linked into network, and wireless base station provides UE Preference information forward is accessed to initial MME, the access preference information that initial MME is provided according to UE is UE gravity treatments MME.

As shown in figure 12, the signaling process of the present embodiment has following steps：

1001, UE initiate RRC connection request to eNodeB, wherein carrying NAS access requests；

In this step, UE carries access preference information, which can be used for providing when network UE selection MME Foundation.

1002, eNodeB select initial MME, i.e. MME1 for UE, and send initial context request message to MME1, carry NAS access requests；

In this step, the access preference information that eNodeB carries UE, forward give initial MME.

1003, MME1 send authentication request to HSS；

1004, HSS return to Authentication Response to MME1, wherein carry the type information of UE；

1005, MME1 be UE gravity treatment MME, in this step, it is assumed that gravity treatment MME2；

1006, MME1 send redirection message to eNodeB, carry the information of MME2；

After 1007, eNodeB receive the redirection message of MME, initial context solicited message is initiated to MME2, carries NAS Access request；

1008, MME2 send position updating request to HSS；

1009, HSS update to MME2 return positions, wherein carry the subscription data of UE；

1010, MME2 select SGW/PGW for UE, and initiate session establishment request to SGW/PGW；

1011, SGW/PGW ask according to session establishment, and PDN connections are established for UE, return to session establishment response；

1012, MME2 return to initial context response message to eNodeB, wherein carrying NAS access responses；

1013, eNodeB return to RRC connection responses to UE, wherein carrying NAS access responses；

In the present embodiment this step 1005, when initial MME gravity treatments MME, according to the setting of the access preference information of UE, if must Then virtualization attribute must be selected for the access-in management network element of physical NE for the UE, if necessary UE access to physical NE By UE access to Virtual NE, then select virtualization attribute for the access-in management network element of Virtual NE for the UE, if should be by UE Priority access is then preferably the access-in management network element that the UE selects virtualization attribute as physical NE, if answering to physical NE Then it is preferably the access-in management network element that the UE selects virtualization attribute as Virtual NE by UE priority access to Virtual NE.

Although the virtualization attribute based on access-in management network element is set forth in above-described embodiment two to embodiment five, in conjunction with The access network element selection of the access preference information or UE of the UE types or UE of network preference policy or network preference policy and UE Information is the mode that the UE selects access-in management network element, but does not necessarily mean that and only exist a kind of choosing in these embodiments Select mode.In these embodiments, the network node of selection access-in management network element can there are many selection modes, and according to corresponding Network strategy used a kind of selection mode.For example, if network node gets the UE types of UE, can preferentially combine Network preference policy and the UE types of UE select；If network node gets the access preference information of UE, can be preferential It is selected in conjunction with the access preference information of UE；If network node does not get the UE types and access preference information of UE, It can be selected in conjunction with network preference policy；If network node gets the UE types of UE and the access preference information of UE, The access preference information (or preferential UE types for combining network preference policy and UE) of UE then can be preferentially combined to select, etc. Deng.

It will appreciated by the skilled person that whole or certain steps in method disclosed hereinabove, system, dress Function module/unit in setting may be implemented as software, firmware, hardware and its combination appropriate.In hardware embodiment, Division between the function module/unit referred in the above description not necessarily corresponds to the division of physical assemblies；For example, one Physical assemblies can have multiple functions or a function or step that can be executed by several physical assemblies cooperations.Certain objects Reason component or all physical assemblies may be implemented as by processor, such as central processing unit, digital signal processor or microprocessor The software that device executes, is either implemented as hardware or is implemented as integrated circuit, such as application-specific integrated circuit.Such software Can be distributed on a computer-readable medium, computer-readable medium may include computer storage media (or non-transitory be situated between Matter) and communication media (or fugitive medium).As known to a person of ordinary skill in the art, term computer storage medium includes In any method or skill for storing information (such as computer-readable instruction, data structure, program module or other data) The volatile and non-volatile implemented in art, removable and nonremovable medium.Computer storage media includes but not limited to RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storages, magnetic Box, tape, disk storage or other magnetic memory apparatus or it can be used for storing desired information and can be visited by computer Any other medium asked.In addition, known to a person of ordinary skill in the art be, communication media generally comprises computer-readable Other numbers in the modulated data signal of instruction, data structure, program module or such as carrier wave or other transmission mechanisms etc According to, and may include any information delivery media.

Claims

1. a kind of method of selection core net access-in management network element, including：

Network node obtains the virtualization attribute of access-in management network element, and the virtualization attribute, which is used to indicate access-in management network element, is Physical NE or Virtual NE；

Virtualization attribute of the network node based on the access-in management network element selects access-in management net for user equipment (UE) Member.

2. the method as described in claim 1, it is characterised in that：

The network node is wireless base station, and the wireless base station obtains access-in management net at least one of in the following manner The virtualization attribute of member：

The wireless base station obtains access-in management network element by the connection building process between wireless base station and access-in management network element Virtualize attribute；

The base station reconfiguration response message that the wireless base station is returned according to access-in management network element obtains access-in management network element Virtualize attribute；

The access-in management network element reconfiguration request message that the wireless base station is sent according to access-in management network element obtains access-in management The virtualization attribute of network element.

3. the method as described in claim 1, it is characterised in that：

The network node is to be initially accessed managed network element, and the managed network element that is initially accessed obtains the virtual of access-in management network element Change attribute, including：The initial access managed network element obtains candidate access-in management by the interaction flow between access-in management network element The virtualization attribute of access-in management network element in network element set.

4. the method as described in claim 1, it is characterised in that：

Virtualization attribute of the network node based on the access-in management network element selects access-in management network element for UE, including：Institute State virtualization attribute of the network node based on the access-in management network element, in conjunction with network preference policy, the UE types of the UE with And it is one or more in the access preference information of the UE, select access-in management network element for the UE.

5. the method as described in claim 1, it is characterised in that：

The network node is wireless base station, and virtualization attribute of the wireless base station based on the access-in management network element is UE Access-in management network element is selected, including：

After the wireless base station receives the radio connection request message of UE transmissions, connect one of in the following way for UE selections Enter managed network element：

According to the setting of network preference policy, if should be preferably that the UE selections are virtual by UE priority access to physical NE Change the access-in management network element that attribute is physical NE, if should be preferably the UE selections by UE priority access to Virtual NE Virtualize the access-in management network element that attribute is Virtual NE；

The UE types that the UE is obtained from the radio connection request message, according to the setting of network preference policy, if should incite somebody to action UE priority access with the UE types is then preferably that the UE selects to virtualize attribute to be physical NE to physical NE Access-in management network element, if should be preferably that the UE selections are empty by the UE priority access with the UE types to Virtual NE Quasi-ization attribute is the access-in management network element of Virtual NE；

The access preference information that the UE is obtained from the radio connection request message, according to setting for the access preference information It sets, if virtualization attribute must be selected for the access-in management network element of physical NE for the UE UE access to physical NE, If virtualization attribute must be selected for the access-in management network element of Virtual NE for the UE UE access to Virtual NE, if Should be preferably then the access-in management net that the UE selects virtualization attribute as physical NE by UE priority access to physical NE Member, if should be preferably the access tube that the UE selects virtualization attribute as Virtual NE by UE priority access to Virtual NE Manage network element.

6. the method as described in claim 1, it is characterised in that：

The network node is to be initially accessed managed network element, and the initial access managed network element is based on the access-in management network element Attribute is virtualized, access-in management network element is selected for UE, including：

After the Non-Access Stratum NAS access requests for the UE that the initial access managed network element receives wireless base station forward, according to One of following manner is that the UE selects access-in management network element：

The UE types that the UE is obtained from user-subscribed database, according to the setting of network preference policy, if should will have described The UE priority access of UE types is then preferably the access-in management that the UE selects virtualization attribute as physical NE to physical NE Network element, if should be preferably the UE selections virtualization attribute by the UE priority access with the UE types to Virtual NE For the access-in management network element of Virtual NE；

The access preference information that the UE is obtained from the message of NAS access requests described in the wireless base station forward, according to institute The setting of access preference information is stated, if must be by UE access to physical NE, it be physics to select virtualization attribute for the UE The access-in management network element of network element, if must be by UE access to Virtual NE, it be virtual net to select virtualization attribute for the UE The access-in management network element of member, if should be preferably that the UE selects to virtualize attribute to be object by UE priority access to physical NE The access-in management network element of network element is managed, if should be preferably the UE selections virtualization attribute by UE priority access to Virtual NE For the access-in management network element of Virtual NE；

The access network element that the UE is obtained from user-subscribed database selects information, and setting for information is selected according to the access network element It sets, if virtualization attribute must be selected for the access-in management network element of physical NE for the UE UE access to physical NE, If virtualization attribute must be selected for the access-in management network element of Virtual NE for the UE UE access to Virtual NE, if Should be preferably then the access-in management net that the UE selects virtualization attribute as physical NE by UE priority access to physical NE Member, if should be preferably the access tube that the UE selects virtualization attribute as Virtual NE by UE priority access to Virtual NE Manage network element.

7. a kind of device of selection core net access-in management network element, which is characterized in that including：

Attribute acquisition module, the virtualization attribute for obtaining access-in management network element, the virtualization attribute are used to indicate access Managed network element is physical NE or Virtual NE；

Network element selecting module is used for the virtualization attribute based on the access-in management network element, and access tube is selected for user equipment (UE) Manage network element.

8. device as claimed in claim 7, it is characterised in that：

Virtualization attribute of the network element selecting module based on the access-in management network element selects access-in management network element, packet for UE It includes：Based on the virtualization attribute of the access-in management network element, in conjunction with network preference policy, the UE types of the UE and the UE Access preference information in it is one or more, for the UE select access-in management network element.

9. device as claimed in claim 7, it is characterised in that：

Described device is arranged in wireless base station, virtualization category of the network element selecting module based on the access-in management network element Property, access-in management network element is selected for UE, including：

After the radio connection request message for receiving UE transmissions, access-in management network element is selected for UE one of in the following way：

10. device as claimed in claim 7, it is characterised in that：

Described device is arranged in being initially accessed managed network element, void of the network element selecting module based on the access-in management network element Quasi-ization attribute selects access-in management network element for UE, including：

After the Non-Access Stratum NAS access requests for receiving the UE of wireless base station forward, selected one of in the following way for UE Access-in management network element：

11. a kind of wireless base station, including memory, processor and it is stored on the memory and can transports on the processor Capable computer program, which is characterized in that the processor realizes following processing when executing the computer program：

The virtualization attribute of access-in management network element is obtained, it is physical NE that the virtualization attribute, which is used to indicate access-in management network element, Or Virtual NE；

12. wireless base station as claimed in claim 11, it is characterised in that：

The virtualization attribute for obtaining access-in management network element, including：

By the connection building process between wireless base station and access-in management network element, the virtualization attribute of access-in management network element is obtained；

The base station reconfiguration response message returned according to access-in management network element obtains the virtualization attribute of access-in management network element；

According to the access-in management network element reconfiguration request message that access-in management network element is sent, the virtualization of access-in management network element is obtained Attribute.

13. the wireless base station as described in claim 11 or 12, it is characterised in that：

Based on the virtualization attribute of the access-in management network element, access-in management network element is selected for UE, including：Based on the access tube The virtualization attribute for managing network element, in the access preference information in conjunction with network preference policy, the UE types of the UE and the UE It is one or more, for the UE select access-in management network element.

14. the wireless base station as described in claim 11 or 12, it is characterised in that：

Based on the virtualization attribute of the access-in management network element, access-in management network element is selected for UE, including：

After the radio connection request message for receiving UE transmissions, access-in management network element is selected for the UE one of in the following way：

15. a kind of access-in management network element, including memory, processor and it is stored on the memory and can be in the processor The computer program of upper operation, which is characterized in that the processor realizes following processing when executing the computer program：

16. access-in management network element as claimed in claim 15, it is characterised in that：

Based on the virtualization attribute of the access-in management network element, in conjunction with network preference policy, the UE types of the UE and described It is one or more in the access preference information of UE, select access-in management network element for the UE.

17. access-in management network element as claimed in claim 15, it is characterised in that：

It is the UE one of in the following way after the Non-Access Stratum NAS access requests for receiving the UE of wireless base station forward Select access-in management network element：

18. a kind of cut-in method of user equipment (UE), including：

UE obtains the access preference information of configuration, and the access preference information includes the virtualization attribute of access-in management network element, institute It is physical NE or Virtual NE to state virtualization attribute and be used to indicate access-in management network element；

19. cut-in method as claimed in claim 18, it is characterised in that：

The virtualization attribute for the access-in management network element that the access preference information includes is used to indicate one of following：It must candidate Reason network element must select Virtual NE, preferential selection physical NE or preferentially select Virtual NE.

20. a kind of access device of user equipment (UE), which is characterized in that including：

Data obtaining module, the access preference information for obtaining configuration, the access preference information include access-in management network element Virtualization attribute, it is physical NE or Virtual NE that the virtualization attribute, which is used to indicate access-in management network element,；

21. access device as claimed in claim 20, it is characterised in that：

22. a kind of user equipment, including memory, processor and it is stored on the memory and can transports on the processor Capable computer program, which is characterized in that the processor realizes following processing when executing the computer program：

The access preference information of configuration is obtained, the access preference information includes the virtualization attribute of access-in management network element, described It is physical NE or Virtual NE that virtualization attribute, which is used to indicate access-in management network element,；

23. user equipment as claimed in claim 22, it is characterised in that：