CN110366204A

CN110366204A - Communication means and communication device

Info

Publication number: CN110366204A
Application number: CN201810316447.8A
Authority: CN
Inventors: 韦安妮; 吴义壮; 熊春山
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-04-10
Filing date: 2018-04-10
Publication date: 2019-10-22
Anticipated expiration: 2038-04-10
Also published as: WO2019196680A1; CN110366204B

Abstract

This application provides a kind of communication means and communication device, which includes: the first session management network element to mobile management network element the first request message of transmission, for requesting newly-increased session management network element；The mobile management network element determines the second session management network element and sends the second request message to the second session management network element, it is the first conversation establishing session context of terminal device for requesting the second session management network element, the second session management network element sends third request message to the first session management network element, establishes session or more new session for requesting；The first session management network element sends control information or the second session management network element to the second session management network element and obtains the control information from local, and the control information is for indicating signaling processing mode of first session at the second session management network element.The communication means and communication device of the embodiment of the present application, can reduce the signalling loads of session management network element.

Description

Communication means and communication device

Technical field

This application involves the communications fields, and more particularly, to the communication means and communication device in the communications field.

Background technique

With the fast development of wireless communication technique, the 5th generation (fifth generation, 5G) mobile communication technology is answered It transports and gives birth to.Packet Data Unit (packet data unit, PDU) session is terminal device and data network defined in 5G Connection between (data network, DN) provides PDU connection sex service.The type of connection can be internet (internet Protocol, IP), Ethernet or non-structural data.The PDU connection service that 5G core net is supported refers to that providing terminal sets The service of the standby PDU exchange between DN.Terminal device can establish multiple PDU sessions, for be connected to identical DN or Different DN.One PDU session is come by a conversation management functional (session management function, SMF) network element Management.SMF network element can be responsible for session management, foundation, modification, release including PDU session etc..

Since 5G uses high frequency, the region that each base station is covered is by very little, so that the base station in certain geographic area is very More, the connection that the mobility of terminal device will lead to terminal device frequently switches between the base stations, in this way, managing the terminal The SMF network element signaling to be treated of the session of equipment is more, loads larger.

Summary of the invention

The application provides a kind of communication means and communication device, can reduce the signalling loads of session management network element.

In a first aspect, providing a kind of communication means, comprising: the first session management network element is sent to mobile management network element First request message, first request message is for requesting newly-increased session management network element；The first session management network element connects The third request message from the second session management network element is received, the third request message establishes the first session or more for requesting New first session；The first session management network element sends control information, the control to the second session management network element Information processed is for indicating signaling processing mode of first session at the second session management network element.

The communication means of the embodiment of the present application is sent by the first session management network element for requesting newly-increased session management net The request message of member, and be the newly-increased relevant signaling processing mode of the second session management network element configuration, so that second session Managed network element shares the part signaling at the first session management network element, and the signaling for advantageously reducing the first session management network element is negative It carries, to improve system performance.

Optionally, above-mentioned control information is specifically used for indicating the second session management network element to the N1 signaling of above-mentioned first session And/or the signaling processing mode of N2 signaling, wherein N1 signaling is the letter of Non-Access Stratum (non-access stratum, NAS) It enables, N2 signaling is the related signaling of wireless access network (radio access network, RAN).

Optionally, the first session management network element may not need to mobile management network element and send the first request message, but The second request message directly is sent to the second session management network element, second request message is for requesting the second session pipe Manage the first conversation establishing session context that network element is terminal device.

In such a scenario, the first session management network element can not increase session management network element newly by mobile management network element (i.e. the first session management network element sends the first request message to mobile management network element, is it by the mobile management network element Determine the second session management network element), but oneself determine the second session management network element, and send to the second session management network element Second request message, i.e. the second session management network element of triggering insertion, it is subsequent again by the first session management network element or the second session pipe Reason network element notice mobile management network element has increased session management network element newly, and the new session management network element is the second session Managed network element.

In this way, can reduce the signalling loads of mobile management network element, strengthen the control ability of the first session management network element, The process is readily applicable in the network architecture that mobile management network element and the second session management network element do not have interface, but this Application embodiment is not construed as limiting this.

Optionally, in the session that the first session management network element can also send first session to the second session management network element Context information, the session context information may include the above-mentioned terminal that the first session management network element is got from UDM network element The signing information of equipment also may include the letter for related first session that the first session management network element is got from PCF network element Breath can also include the information of related first session configured on the first session management network element.

With reference to first aspect, in certain implementations of first aspect, in the first session management network element to movement Property managed network element send the first request message before, the method also includes: the first session management network elements to determine described the Whether the signaling at one session managed network element overloads；The first session management network element sends first to mobile management network element and asks Seek message, comprising: in the case where signaling overload at the first session management network element, the first session management network element to The mobile management network element sends first request message.

Since 5G uses high frequency, the region that each base station is covered is by very little, so that the base station in certain geographic area is very More, the connection that the mobility of terminal device will lead to terminal device frequently switches between the base stations, in this way, managing the terminal First session management network element signaling to be treated of the session of equipment is more, loads larger.And in the embodiment of the present application, the One session managed network element will request newly-increased session management net once finding signaling overload or being possible to signaling overload occur Member shares the signaling at the first session management network element, the signalling loads of the first session management network element can be reduced, to improve System performance.

With reference to first aspect, in certain implementations of first aspect, described in the first session management network element determination Whether the signaling at the first session management network element overloads, comprising: the first session management network element according in following message extremely One few, determine whether the signaling at the first session management network element overloads: the first session management network element is in unit The mobile message of the terminal device managed in the quantity of the signaling of interior processing, the first session management network element and described The quantity of the terminal device managed on one session managed network element.

It should be understood that the first session management network element can be determined in the case where meeting any of above three condition this Signaling overload at one session managed network element can also just determine first session in the case where above three condition is all satisfied Signaling overload at managed network element, the embodiment of the present application are not construed as limiting this.

With reference to first aspect, in certain implementations of first aspect, the signaling processing mode include it is following at least A kind of: the first signaling processing mode, the first signaling processing mode are that described the is handled by the second session management network element The hand off signaling of one session；Second signaling processing mode, the second signaling processing mode are by the second session management net Member handles the Release radio resource signaling of first session；And third signaling processing mode, third signaling processing side Formula is to handle terminal device belonging to first session as the second session management network element to go to connected state from Idle state Signaling or gone to from the inactive RRC Inactive state of wireless heterogeneous networks non-RRC Inactive connected state signaling.

It should be understood that above-mentioned refer to that the second session management network element can trigger by the second session management network element processing related signaling The related procedures such as switching, paging, i.e., directly send to mobile management network element and request, and triggering mobile management network element execution is cut It changes, page, and no longer in other words shared first by the second session management network element by above-mentioned first session management network element Therefore processing of the session management network element to above-mentioned signaling can reduce the load at the first session management network element.

With reference to first aspect, in certain implementations of first aspect, in the first session management network element to described Before second session management network element sends control information, the method also includes: the first session management network element reception comes from The control information of policy control functions network element.

Optionally, information, the control can be locally configured for the second session management network element in the control information Information can be to be determined by the second session management network element according to the information from user plane functions network element when using local policy Information, or the information from the first session management network element, or from policy control functions network element Information, the embodiment of the present application are not construed as limiting this.

With reference to first aspect, in certain implementations of first aspect, the third request message carries following message At least one of: the identification information of terminal device belonging to first session, first session identification information, described The mark for the user plane functions network element that the identification information of second session management network element and the second session management network element are controlled Know information.

With reference to first aspect, in certain implementations of first aspect, the method also includes: the first session pipe Network element is managed according to the third request message, Xiang Suoshu the second session management network element sends the first response message, first sound Message is answered to carry at least one of following message: the identification information of terminal device belonging to first session, described first The mark for the user plane functions network element that identification information, tunnel information and the first session management network element of session are controlled is believed Breath.

Second aspect provides another communication means, comprising: the second session management network element, which receives, comes from mobile management Second request message of network element or the first session management network element, second request message is for requesting the second session pipe Manage the first conversation establishing session context that network element is terminal device；The second session management network element is to the first session pipe It manages network element and sends third request message, the third request message establishes first session or update described first for requesting Session；The second session management network element obtains control information, and the control information is for indicating first session described The signaling processing mode of the N1/N2 signaling of second session management network element.

In conjunction with second aspect, in certain implementations of second aspect, the control information is the second session pipe Information is locally configured in reason network element；Or the control information be when using local policy by the second session management network element according to Lai The information determined from the information of user face functional network element；Or the control information comes from the first session management network element；Or institute Control information is stated from policy control functions network element.

In conjunction with second aspect, in certain implementations of second aspect, the signaling processing mode include it is following at least A kind of: the first signaling processing mode, the first signaling processing mode are that described the is handled by the second session management network element The hand off signaling of one session；Second signaling processing mode, the second signaling processing mode are by the second session management net Member handles the Release radio resource signaling of first session；Third signaling processing mode, the third signaling processing mode are The terminal device is handled by the second session management network element and from Idle state goes to the signaling of connected state or from radio resource Control the signaling that inactive RRC Inactive state goes to the connected state of non-RRC Inactive.

In conjunction with second aspect, in certain implementations of second aspect, the third request message carries following message At least one of: the identification information of the terminal device, the identification information of first session, the second session management net The identification information for the user plane functions network element that the identification information and the second session management network element of member are controlled.

In conjunction with second aspect, in certain implementations of second aspect, in the second session management network element to described After first session management network element sends third request message, the method also includes: the second session management network element receives The first response message from the first session management network element, first response message carry at least one in following message Kind: the identification information of the terminal device, the identification information of first session, tunnel information and first session management The identification information for the user plane functions network element that network element is controlled.

The third aspect provides another communication means, comprising: mobile management network element, which receives, comes from the first session management First request message of network element, first request message is for requesting newly-increased session management network element；The mobile management network Member receives the session establishment request message from the terminal device, and the session establishment request message is for requesting and described the One session managed network element establishes connection；The mobile management network element is according to the session establishment request message, Xiang Suoshu second Session management network element sends the second request message, and second request message is for requesting the second session management network element for eventually First conversation establishing session context of end equipment.

Fourth aspect provides a kind of communication device, for executing any possibility of above-mentioned first aspect or first aspect Implementation in method.Specifically, which includes any possibility for executing above-mentioned first aspect or first aspect Implementation in method unit.

5th aspect, provides another communication device, can for executing above-mentioned second aspect or any of second aspect Method in the implementation of energy.Specifically, the device include can for executing above-mentioned second aspect or any of second aspect The unit of method in the implementation of energy.

6th aspect, provides another communication device, can for executing the above-mentioned third aspect or any of the third aspect Method in the implementation of energy.Specifically, the device include can for executing the above-mentioned third aspect or any of the third aspect The unit of method in the implementation of energy.

7th aspect, provides another communication device, which includes: transceiver, memory and processor.Wherein, The transceiver, the memory and the processor are communicated with each other by internal connecting path, the memory for storing instruction, at this Reason device is used to execute the instruction of memory storage, receives signal to control and receive device, and control transmitter and send signal, so that The device executes the method in any possible implementation of first aspect or first aspect.

Eighth aspect provides another communication device, which includes: transceiver, memory and processor.Wherein, The transceiver, the memory and the processor are communicated with each other by internal connecting path, the memory for storing instruction, at this Reason device is used to execute the instruction of memory storage, receives signal to control and receive device, and control transmitter and send signal, so that The device executes the method in any possible implementation of second aspect or second aspect.

9th aspect, provides another communication device, which includes: transceiver, memory and processor.Wherein, The transceiver, the memory and the processor are communicated with each other by internal connecting path, the memory for storing instruction, at this Reason device is used to execute the instruction of memory storage, receives signal to control and receive device, and control transmitter and send signal, so that The device executes the method in any possible implementation of the third aspect or the third aspect.

Tenth aspect, provides a kind of computer program product, which includes: computer program generation Code, when the computer program code is run by computer, so that the computer executes any possible of any of the above-described aspect Method in implementation.

On the one hand tenth, provides a kind of computer-readable medium, for storing computer program, the computer program packet Include the instruction of the method in any possible implementation for executing any of the above-described aspect.

12nd aspect, provides a kind of chip system, including memory and processor, which calculates for storing Machine program, the processor from memory for calling and running the computer program, so that being equipped with the logical of the chip system Letter equipment executes the method in any possible implementation of any of the above-described aspect.

Detailed description of the invention

Fig. 1 is the schematic diagram of system architecture provided by the embodiments of the present application.

Fig. 2 is the schematic diagram of an application scenarios provided by the embodiments of the present application.

Fig. 3 is the schematic flow chart of communication means provided by the embodiments of the present application.

Fig. 4 is the schematic flow chart of another communication means provided by the embodiments of the present application.

Fig. 5 is the schematic flow chart of another communication means provided by the embodiments of the present application.

Fig. 6 is the schematic block diagram of communication device provided by the embodiments of the present application.

Fig. 7 is the schematic block diagram of another communication device provided by the embodiments of the present application.

Fig. 8 is the schematic block diagram of another communication device provided by the embodiments of the present application.

Fig. 9 is the schematic block diagram of another communication device provided by the embodiments of the present application.

Specific embodiment

Below in conjunction with attached drawing, the technical solution in the application is described.

Fig. 1 shows the schematic diagram of the system architecture 100 using the embodiment of the present application.As shown in Figure 1, the system architecture 100 include: mobile management network element 110, the first session management network element 120 and the second session management network element 130.Optionally, should System architecture 100 can also include terminal device 140.

Above system framework 100 can be used for executing communication means in the embodiment of the present application.

In one possible implementation, the mobile management network element 110 in above system framework 100 is specifically used for: The first request message from the first session management network element is received, first request message is for requesting newly-increased session management net Member；Receive the session establishment request message from the terminal device, the session establishment request message for request with it is described First session management network element establishes connection；According to the session establishment request message, Xiang Suoshu the second session management network element is sent Second request message, the first session that second request message is used to that the second session management network element to be requested to be terminal device Create session context.

In alternatively possible implementation, the first session management network element 120 in above system framework 100 is specifically used In: the first request message is sent to mobile management network element, first request message is for requesting newly-increased session management network element； Receive the third request message from the second session management network element, the third request message for request establish the first session or Update first session；Control information is sent to the second session management network element, the control information is for indicating described Signaling processing mode of first session in N1 the or N2 signaling of the second session management network element.

In alternatively possible implementation, the second session management network element 130 in above system framework 100 is specifically used In: receive the second request message from mobile management network element or the first session management network element, second request message It is the first conversation establishing session context of terminal device for requesting the second session management network element；To first session Managed network element sends third request message, and the third request message is for requesting to establish first session or updating described the One session；Receive the control information from the first session management network element or policy control functions network element, the control information For indicating first session in the signaling processing mode of the N1/N2 signaling of the second session management network element.

Optionally, the mobile management network element 110 in above system framework 100, the first session management network element 120 and second Session management network element 130 can be realized by an equipment, can also be realized, be can also be in an equipment jointly by multiple equipment A functional module, the embodiment of the present application is not especially limited this.It is understood that above-mentioned function is either hardware Network element in equipment is also possible on the software function run on specialized hardware or platform (for example, cloud platform) The virtualization of instantiation.

Fig. 2 shows the schematic diagrames of the application scenarios 200 of the embodiment of the present application.As shown in Fig. 2, the application scenarios 200 have Body may include following network elements:

Access and mobile management function to ps domain (access and mobility management function, AMF) net Member is responsible for access and mobile management, has the function of to authenticate user, switch, location updating etc..

Conversation management functional (session management function, SMF) network element is responsible for session management, including is divided The foundation, modification, release etc. of group data cell (packet data unit, PDU) session.During SMF network element can specifically be divided into Between SMF (intermediate-SMF, I-SMF) network element and anchor point SMF (anchor-SMF, A-SMF) network element two types, In, user plane functions (user plane function, UPF) network element (i.e. I- of I-SMF network element control and access network interface UPF), A-SMF network element control session anchor point UPF network element (i.e. A-UPF).

It should be understood that mobile management network element 110 specifically can be with the AMF net in corresponding diagram 2 in above system framework 100 Member, the first session management network element 120 specifically can specifically may be used with the A-SMF network element in corresponding diagram 2, the second session management network element 130 With the I-SMF network element in corresponding diagram 2, terminal device 130 specifically can be with the UE in corresponding diagram 2.

It should be understood that the application divides SMF for I-SMF and A-SMF only due to SMF is in the system architecture 100 and application The role served as in scene 200 is different.Above-mentioned I-SMF network element and A-SMF network element can also use other titles, and the application is implemented Example is not especially limited this.

Optionally, which can also include: authentication service function (authentication server Function, AUSF) network element, there is Certificate Authority business function, for being responsible for the generation of key and two-way between UE Authentication.

Optionally, the application scenarios 200 can also include: uniform data management (unified data management, UDM) network element preserves the subscription data of user.

Optionally, the application scenarios 200 can also include: policy control functions (policy control function, PCF) network element: being responsible for subscriber policy management, both includes mobility corresponding strategies, also includes PDU session corresponding strategies, for example, clothes Business quality (quality of service, QoS) strategy, charging policy etc..

Optionally, which can also include: user plane functions (user plane function, UPF) net Member: UPF is user plane functions, is responsible for the forwarding of user data.UPF network element be specifically divided into m- UPF (intermediate- UPF, I-UPF) and anchor point UPF (anchor-UPF, A-UPF), wherein I-UPF and access net connect, and A-UPF is session anchor point UFP, A-UPF is properly termed as PDU session anchor point UPF (PDU Session Anchor UPF, PSA), the embodiment of the present application again This is not construed as limiting.

Optionally, which can also include: data network (data network, DN): the PDU meeting of user Talk about the destination of access.

It should be understood that above-mentioned application scenarios 200 can also include wireless access network (radio access network, RAN) Equipment and user equipment (user equipment, UE).Wherein, UE is communicated by N1 interface with AMF, and UE can be connect by RAN Enter 5G network, RAN is communicated by N2 interface with AMF, and RAN is communicated by N3 interface with I-UPF, and I-UPF passes through N4 interface and I- SMF communication, I-UPF are communicated by N9 interface with A-UPF (PSA), and A-UPF (PSA) is communicated by N4 interface with A-SMF, A-UPF (PSA) it being communicated by N6 interface with DN, AMF is communicated by N11 interface with I-SMF, and AMF is communicated by N12 interface with AUSF, AMF is communicated by N8 interface with UDN, and AMF is communicated by N15 interface with PCF, and I-SMF is communicated by N16* interface with A-SMF, A-SMF is communicated by N10 interface with UDM, and A-SMF is communicated by N7 interface with PCF.

It should be noted that in Fig. 2 only with terminal device be UE made exemplary illustration, each network element in Fig. 2 it Between interface name be only an example, in the concrete realization, the interface name of the application scenarios 200 is also possible to as other names Claim, the embodiment of the present application is not especially limited this.In addition, RAN equipment can also be referred to as access device, which refers to Be core network access equipment.

Wireless access network equipment is the access device that terminal device is wirelessly linked into the mobile communication system, It can be base station (NodeB), evolved base station (eNodeB), the base station (gNB) in 5G mobile communication system, future mobile communications The access node etc. in base station or WiFi system in system, can also be cloud Radio Access Network (cloud radio Access network, CRAN) wireless controller under scene or the access network equipment can be relay station, access point, vehicle Carry the network equipment in the PLMN network of equipment, wearable device and the network equipment or the following evolution in future 5G network Deng, embodiments herein to particular technique used by wireless access network equipment and specific equipment form without limitation.

Certainly, other network elements can also be disposed in above-mentioned application scenarios 200, for example, network is sliced selection function (network slice selection function, NSSF) network element etc., the embodiment of the present application is not especially limited this.

Optionally, application scenarios 200 shown in Fig. 2 can be applied to 5G network and other following possible networks, this Application embodiment is not especially limited this.

Involved terminal device (terminal) may include various with wireless communication function in the embodiment of the present application Can handheld device, mobile unit, wearable device, calculate equipment or be connected to other processing of radio modem and set It is standby；It can also include subscriber unit (subscriber unit), cellular phone (cellular phone), smart phone (smart phone), wireless data card, are put down at personal digital assistant (personal digital assistant, PDA) computer Template computer, radio modem (modem), handheld device (handheld), laptop computer (laptop Computer), wireless phone (cordless phone) or wireless local loop (wireless local loop, WLL) Platform, machine type communication (machine type communication, MTC) terminal, user equipment (user equipment, UE), mobile station (mobile station, MS), terminal device (terminal device) or trunk subscriber equipment etc..Its In, trunk subscriber equipment for example can be 5G home gateway (residential gateway, RG).For convenience of description, the application In, apparatus mentioned above is referred to as terminal device.

It should be understood that terminal device can provide single network when initiating PDU session establishment to AMF network element is sliced auxiliary information (single network slice selection assistance information, S-NSSAI) and data network name Claim (data network name, DNN).AMF network element is based on S-NSSAI, DNN and other information (for example, the terminal device Signing information and local carrier policy etc.) determine the address of session management network element.Determined session management network element can To be that the terminal device establishes a PDU session based on S-NSSAI and DNN.

Fig. 3 shows the schematic flow chart of communication means 300 provided by the embodiments of the present application.This method 300 can answer For system architecture 100 shown in FIG. 1, it also can be applied to application scenarios 200 shown in Fig. 2, the embodiment of the present application is not limited to This.

S310, the first session management network element send the first request message, then accordingly, the shifting to mobile management network element Mobility management network element receives first request message that the first session management network element is sent, and first request message is used In the newly-increased session management network element of request；

S320, the mobile management network element send the second request message to the second session management network element, then correspond to Ground, the second session management network element receive second request message that the mobile management network element is sent, and described second The first conversation establishing session context that request message is used to that the second session management network element to be requested to be terminal device；

S330, the second session management network element sends third request message to the first session management network element, then right Ying Di, the first session management network element receives the third request message that the second session management network element is sent, described Third request message is for requesting to establish first session or updating first session；

S340, the first session management network element send control information to the second session management network element, then accordingly, The second session management network element receives the control information that the first session management network element is sent, and the control information is used for table Show signaling processing mode of first session at the second session management network element.

Specifically, the first session management network element is responsible for the session management of terminal device, which can be with The first request message for requesting newly-increased session management network element is sent to mobile management network element, mobile management network element receives First request message, and a new session management network element (referred to herein as second is selected according to first request message Session management network element).The mobile management network element can send first that request is terminal device to the second session management network element Second request message of conversation establishing session context, the second session management network element receive second request message, for this One conversation establishing session context is sent to the first session management network element for requesting the third for establishing session or more new session to be asked Seek message.The first session management network element receives the third request message, and sends control letter to the second session management network element Breath, for indicating signaling processing mode of above-mentioned first session at the second session management network element.The second session management net Member receives the control information, so as to the subsequent letter for handling first session according to signaling processing mode represented by the control information It enables.

In alternatively possible implementation, S310 can also be not present in the above method 300, by the first session management Network element directly sends the second request message to the second session management network element, and second request message is for requesting second meeting Talk about the first conversation establishing session context that managed network element is terminal device.

S310 if it exists in the above method 300, then the implementation complexity of the first session management network element is smaller；If it does not exist S310 can reduce the signalling loads of mobile management network element, strengthen the control ability of the first session management network element, the process It can be adapted in the network architecture that mobile management network element and the second session management network element do not have interface, but the application is implemented Example is not construed as limiting this.

It should be understood that the first session management network element can send the session of first session or more to the second session management network element Literary information, the session context information may include that the above-mentioned terminal that gets from UDM network element of the first session management network element is set Standby signing information also may include the information for related first session that the first session management network element is got from PCF network element, Can also include the information of related first session configured on the first session management network element or in local policy use according to The information that information from UPF is determined by the first session management network element, for example, UE global unique identification (subscription Permanent identifier, SUPI), PDU session id, N2SM information (QoS flow identify (QoS flow Identifier, QFI (s)), QoS data (QoS profile (s)), core net N3 interface tunnel information (CN N3 Tunnel Info), slice selection information (single network slice selection assistance information, S- NSSAI), paging policy instruction (paging policy indication) etc.), N2 information effective coverage (area of Validity for N2 information), distribution and retain priority (allocation and retention Priority, ARP), paging policy indicate (paging policy indication), 5G QoS identification (5G QoS Identifier, 5QI) etc., the embodiment of the present application is not construed as limiting this.

It should also be understood that above-mentioned control information is specifically used for indicating that the second session management network element believes the N1 of above-mentioned first session The signaling processing mode of order and/or the signaling processing mode of N2 signaling, wherein N1 signaling is Non-Access Stratum (non-access Stratum, NAS) signaling, N2 signaling is the related signaling of wireless access network (radio access network, RAN).

As an optional embodiment, letter is locally configured for the second session management network element in the control information Breath；Or the control information is by the second session management network element when using local policy according to from user plane functions network element The information that information determines；Or the control information comes from the first session management network element；Or the control information is from strategy Control function network element.

In other words, in alternatively possible implementation, S340 can also be not present in the above method 300, by the Two session management network elements are obtained from being locally configured in information, or when using local policy by the second session management network element according to Information from user plane functions network element (such as UPF) determines above-mentioned control information, or obtains from policy control functions network element Above-mentioned control information is taken, the embodiment of the present application is not construed as limiting this.

It should be understood that paging scene for processing, above-mentioned local policy can be paging policy difference (paging policy Differentiation, PPD), the information of user plane functions network element can be differentiated services code points (differentiated Services code point, DSCP) information, alternatively, the information of the user plane functions network element can manage net for user's facial canal Member is sent to the DSCP information of the packet header of the second session management network element, and the embodiment of the present application is not construed as limiting this.

As an optional embodiment, sent in the first session management network element to the second session management network element Before controlling information, the method also includes:

The first session management network element receives the control information from policy control functions network element.

It should be understood that above-mentioned control information can be sent to the first session management network element by policy control functions network element, then by The first session management network element is sent to the second session management network element, is also possible to be transmitted directly to by policy control functions network element Second session management network element, the embodiment of the present application is not construed as limiting this.

As an optional embodiment, first is sent to mobile management network element in the first session management network element and is asked Before seeking message, the method also includes:

The first session management network element determines whether the signaling at the first session management network element overloads；

The first session management network element sends the first request message to mobile management network element, comprising:

In the case where signaling overload at the first session management network element, the first session management network element is to described Mobile management network element sends first request message.

Specifically, the first session management network element can first determine whether the signaling at the first session management network element overloads, If the signaling overload at the first session management network element, which sends to the mobile management network element State the first request message.

As an optional embodiment, the first session management network element is determined at the first session management network element Whether signaling overloads, comprising:

The first session management network element determines the first session management network element according at least one of following message Whether the signaling at place overloads:

The mobile letter of the quantity of the signaling that the first session management network element is handled within the unit time, the terminal device The quantity of the terminal device managed on breath and the first session management network element.

Specifically, the first session management network element can judge the signaling at the first session management network element in several ways Whether overload, the embodiment of the present application is not construed as limiting this.A kind of possible implementation can be as the first session management network element First threshold is configured, when the first session management network element determines the signaling that the first session management network element is handled within the unit time When quantity is more than the first threshold, which can determine the signaling mistake at the first session management network element It carries；It is alternatively possible be achieved in that can the mobile message of the terminal device according to belonging to the first session judged, if Terminal device frequent switching between the base stations, then can determine the signaling overload at the first session management network element；Another kind can The implementation of energy can be the first session management network element configuration second threshold, when the end managed on the first session management network element When the quantity of end equipment is more than the second threshold, which determines the signaling at the first session management network element Overload.

As an optional embodiment, the first request is sent to mobile management network element in the first session management network element and is disappeared When breath, first session is the session during session establishment；Or first session is to carry out in session Session in the process；Or first session is the subsequent session that access the first session management network element.

Specifically, above-mentioned first session can be the session during carrying out in session establishment process or session, can also Think the subsequent any session that access the first session management network element, the embodiment of the present application is not construed as limiting this.That is the first meeting It is that current specific a certain session increases session management network element newly that words managed network element, which can request mobile management network element, can also be asked Seeking mobile management network element is that the subsequent session that access the first session management network element increases session management network element newly.

If should be understood that, first session is the session during carrying out in session establishment process or session, above-mentioned first Request message can carry the identification information of terminal device belonging to first session and the identification information of first session；If should First session is the subsequent any session that access the first session management network element, and above-mentioned first request message can carry above-mentioned The identification information of first session management network element.

As an optional embodiment, the signaling processing mode includes following at least one:

First signaling processing mode, the first signaling processing mode are as described in the second session management network element processing The hand off signaling of first session；

Second signaling processing mode, the second signaling processing mode are as described in the second session management network element processing The Release radio resource signaling of first session；And

Third signaling processing mode, the third signaling processing mode are as described in the second session management network element processing Terminal device belonging to first session from Idle state goes to the signaling of connected state or from the inactive RRC of wireless heterogeneous networks Inactive state goes to the signaling of the connected state of non-RRC Inactive.

Specifically, above-mentioned signaling processing mode may include hand off signaling to the first session, Release radio resource signaling And terminal device belonging to first session goes to the processing mode of the signaling of connected state from Idle state.Wherein, terminal device Going to connected state from Idle state may include that actively connection and network carry out two scenes of paging to terminal device.

It should be understood that son there are one connected state (connection management-connected, CM-CONNECTED) State is wireless heterogeneous networks (radio resource control, RRC) inactive Inactive state.Specifically, connection State is terminal device and access net RAN, user plane functions network element UPF have a connection, RRC Inactive state be terminal device and RAN is not connected, but RAN and UPF have connection；Idle state is that terminal device and RAN, UPF are not connected.In RRC Under Inactive state, if network side has downlink data packet to send, need to initiate to page (paging) stream by RAN Journey, call terminal equipment；At Idle state (connection management-idle, CM-IDLE), if under network side has Row data packet will be sent, and need to initiate by mobile management network element to page process, call terminal equipment.

It should also be understood that above-mentioned refer to that the second session management network element can touch by the second session management network element processing related signaling The related procedures such as hair switching, paging, i.e., directly send to mobile management network element and request, and triggering mobile management network element execution is cut It changes, page, and no longer in other words shared first by the second session management network element by above-mentioned first session management network element Therefore processing of the session management network element to above-mentioned signaling can reduce the load at the first session management network element.

In one possible implementation, in the feelings that the signaling processing mode includes the first signaling processing mode Under condition, the method also includes:

The second session management network element receives the first update context request from the mobile management network element and disappears Breath, the first update context request message is for requesting the connection by the terminal device to switch to mesh from source network device Mark the network equipment；

The second session management network element updates the contextual information of first session of the terminal device；

The second session management network element sends first to the mobile management network element and updates context response information.

Specifically, after the second session management network element receives the first update context request message, second session Managed network element can update the contextual information of first session of the terminal device, and according to existing control information to Mobile management network element sends first and updates context response information, to complete the switching flow of the terminal device.

In one possible implementation, in the feelings that the signaling processing mode includes the second signaling processing mode Under condition, the method also includes:

The second session management network element receives the second update context request from the mobile management network element and disappears Breath, the second update context request message are used to request to discharge the connection of the terminal device；

The second session management network element updates the session context information of the terminal device；

The second session management network element sends second to the mobile management network element and updates context response information.

Specifically, after the second session management network element receives the second update context request message, second session Managed network element can update the session context information of the terminal device, and according to existing control information to mobile management Network element sends second and updates context response information, to complete the Release radio resource process of the terminal device.

In one possible implementation, in the feelings that the signaling processing mode includes the third signaling processing mode Under condition, the method also includes:

The second session management network element sends the 4th request message, the 4th request to the mobile management network element Message pages the terminal device for requesting.

Specifically, after the second session management network element receives control information, once with the second session management network element Corresponding UPF network element (i.e. the I-UPF of Fig. 2) receives downlink data, and when the no N3 connection of discovery, to the second session management net Member sends a notification message or downlink data, the second session management network element after receiving the notification message or downlink data, Above-mentioned 4th request message can be sent to mobile management network element according to existing control information, to trigger the mobility pipe It manages network element and executes paging process.

It should be understood that the second session management network element is only that mobile management network element execution is requested to seek terminal device It exhales, which can receive the request, that is, executes the paging process to the terminal device, can not also receive this Request sends refuse information or without any processing to the second session management network element, the embodiment of the present application does not limit this It is fixed.

As an optional embodiment, the third request message carries at least one of following message:

The identification information of terminal device belonging to first session, the identification information of first session, described second The mark for the user plane functions network element that the identification information of session management network element and the second session management network element are controlled is believed Breath.

As an optional embodiment, the method also includes:

For the first session management network element according to the third request message, Xiang Suoshu the second session management network element sends the One response message, first response message carry at least one of following message:

The identification information of terminal device belonging to first session, first session identification information, tunnel information And the identification information of user plane functions network element that the first session management network element is controlled；

Then accordingly, the second session management network element receives first sound that the first session management network element is sent Answer message.

It for ease of understanding, with mobile management network element is below AMF, the first session management network element is A-SMF, the second session For managed network element is I-SMF, terminal device is UE, the embodiment of the present application is described in detail in conjunction with fig. 4 to fig. 6.

Fig. 4 shows the schematic flow chart of communication means 400 provided by the embodiments of the present application.This method 400 can answer For system architecture 100 shown in FIG. 1, it also can be applied to application scenarios 200 shown in Fig. 2, the embodiment of the present application is not limited to This.The embodiment of the present application is to current a certain session during session establishment or during session progress (with the first session For) carry out signaling shunting scene.

S401, A-SMF detect the signaling overload at the A-SMF；

The method of detection specifically can be according to the signaling number handled within the unit time on A-SMF (if being more than a certain threshold Value, it is determined that signaling overload), it (can be subscribed to for example, moving in and out A-SMF according to the mobile message of the UE managed on the A-SMF Some region of frequency be more than a certain threshold value, it is determined that signaling overload), can also for the UE managed on A-SMF number (if More than a certain threshold value, it is determined that signaling overload) etc., the embodiment of the present application is not construed as limiting this.

S402, the A-SMF send the first request message to AMF, request to increase I-SMF newly for the first session.

First request message can carry the information such as the reason of SUPI, PDU session id, S-NSSAI, newly-increased SMF.

S403, the AMF receive first request message, and according to SUPI, PDU session id, the S-NSSAI etc. wherein carried The selection of information progress I-SMF.

Specifically, which can select according to the position of UE, the service-domain of A-SMF, load information of candidate I-SMF etc. It is capable of providing the I-SMF of service out.It should be understood that the selection of above-mentioned I-SMF can be selected by AMF according to the information that oneself is safeguarded It selects, can also be selected by the interaction with NRF, can also be selected from alternative I-SMF list, the embodiment of the present application is to this It is not construed as limiting.

S404, the AMF send the second request message to selected I-SMF, and request is established N11 with the I-SMF and connect, should Second request message is specifically as follows creation session context request message.

S405, the I-SMF send the second response message to AMF.

S406, the I-SMF select I-UPF according to the second request message that AMF is sent.

Specifically, the factor that selection I-UPF is considered may include: dynamic load (the UPF's dynamic of UPF Load), ability (the UPF's relative static capacity among of the relative quiescent of the UPF of identical DNN is supported UPFs supporting the same DNN), the location information (UE location information) of UE, DNN, PDU meeting Call type is (for example, IPv4, IPv6, ethernet type Ethernet Type or unstructured type Unstructured Type), the selected SSC mode of PDU session, S-NSSAI etc..The I-SMF can by oneself maintenance above- mentioned information come I-UPF is selected, can also be requested to network storage functional network element (network repository function, NRF), ask NRF An I-UPF is selected for it, the embodiment of the present application is not construed as limiting this.

S407, the I-SMF establish N4 with selected I-UPF and connect.

S408, the I-SMF send third request message to the A-SMF, which is specifically as follows session and builds The request of vertical or session updates, can carry in the third request message SUPI, PDU session id, S-NSSAI, DNN, I-SMF ID, The information such as I-UPF information (such as ID, tunnel information).

S409, the A-SMF send the first response message to the I-SMF, which is specifically as follows session and builds Vertical or session updates request-reply can carry SUPI, PDU session id, S-NSSAI, A-UPF in first response message message The information such as information (such as ID, tunnel information).

S410, the A-SMF send control information to the I-SMF, for configuring the signaling processing mode of N1/N2 signaling.

Optionally, which can also send session context information to the I-SMF, which includes Signing information that A-SMF is got from UDM, the information got from PCF or the information configured on A-SMF, for example, UE is global Unique identification (subscription permanent identifier, SUPI), PDU session id, N2SMinformation (QoS flow identifies (QoS flow identifier, QFI (s)), QoS data (QoS profile (s)), core net N3 interface tunnel Road information (CN N3Tunnel Info), slice selection information (single network slice selection Assistance information, S-NSSAI), paging policy instruction (paging policy indication) etc.), N2 information effective coverage (area of validity for N2information), distribution and reservation priority (allocation and retention priority, ARP), paging policy indicate (paging policy Indication), 5G QoS identification (5G QoS Identifier, 5QI) etc..

Fig. 5 shows the schematic flow chart of communication means 500 provided by the embodiments of the present application.This method 500 can answer For system architecture 100 shown in FIG. 1, it also can be applied to application scenarios 200 shown in Fig. 2, the embodiment of the present application is not limited to This.The embodiment of the present application is not directed to current sessions, is carried out for the subsequent session (by taking the first session as an example) that access A-SMF The scene that signaling shunts.

S501, A-SMF detect the signaling overload at the A-SMF；

S502, the A-SMF send the first request message to AMF, request AMF to the subsequent meeting for requiring connect to this A-SMF Words insertion I-SMF.

The mark of the A-SMF can be carried in first request message (for example, SMF ID, SMF address (IP Addrsss, FQDN etc.)), I-SMF insertion the reason of etc. information.

S503, the AMF receive the NAS message of UE transmission, which carries new session establishment request, which builds Vertical request is connected to above-mentioned A-SMF for requesting.

S504, the AMF are according to the NAS message received, after determining that the UE requires connect to above-mentioned A-SMF, the AMF according to The first request message that A-SMF is sent in S502 selects I-SMF.

S505, the AMF send the second request message to selected I-SMF, and request is established N11 with the I-SMF and connect, should Second request message is specifically as follows creation session context request message.

S506, the I-SMF send the second response message to AMF.

S507, the I-SMF select I-UPF according to the second request message that AMF is sent.

S508, the I-SMF establish N4 with selected I-UPF and connect.

S509, the I-SMF send third request message to the A-SMF, which is specifically as follows session and builds The request of vertical or session updates, can carry in the third request message SUPI, PDU session id, S-NSSAI, DNN, I-SMF ID, The information such as I-UPF information (such as ID, tunnel information).

S510, the A-SMF send the first response message to the I-SMF, which is specifically as follows session and builds Vertical or session updates request-reply can carry SUPI, PDU session id, S-NSSAI, A-UPF in first response message message The information such as information (such as ID, tunnel information).

S511, the A-SMF send control information to the I-SMF, for configuring the signaling processing mode of N1/N2 signaling.

It should be understood that magnitude of the sequence numbers of the above procedures are not meant that the order of the execution order, the execution of each process is suitable Sequence should be determined by its function and internal logic, and the implementation process without coping with the embodiment of the present application constitutes any restriction.

Above in conjunction with Fig. 1 to Fig. 5, the communication means according to the embodiment of the present application is described in detail, below in conjunction with Fig. 6 To Fig. 9, the communication device according to the embodiment of the present application is described in detail.

Fig. 6 shows communication device 600 provided by the embodiments of the present application, and described device 600 can be the first meeting above-mentioned Managed network element is talked about, which includes:

Transmission unit 610, for sending the first request message to mobile management network element, first request message is used for Request newly-increased session management network element；

Receiving unit 620, for receiving the third request message from the second session management network element, the third request disappears Breath is for requesting to establish the first session or updating first session；

The transmission unit 610 is also used to:

Control information is sent to the second session management network element, the control information is for indicating that first session exists Signaling processing mode at the second session management network element.

The communication device of the embodiment of the present application is sent by the first session management network element for requesting newly-increased session management net The request message of member, and be the newly-increased relevant signaling processing mode of the second session management network element configuration, so that second session Managed network element shares the part signaling at the first session management network element, and the signaling for advantageously reducing the first session management network element is negative It carries, to improve system performance.

Optionally, the communication device further include: processing unit, for sending the first request to mobile management network element Determine whether the signaling at the communication device overloads before message；The transmission unit 610 is specifically used for: filling in the communication In the case where the signaling overload for setting place, Xiang Suoshu mobile management network element sends first request message.

Optionally, the signaling processing mode includes following at least one: the first signaling processing mode, first signaling Processing mode is the hand off signaling that first session is handled by the second session management network element；Second signaling processing mode, The second signaling processing mode is the Release radio resource letter that first session is handled by the second session management network element It enables；And third signaling processing mode, the third signaling processing mode are as described in the second session management network element processing Terminal device belonging to first session from Idle state goes to the signaling of connected state or from the inactive RRC of wireless heterogeneous networks Inactive state goes to the signaling of the connected state of non-RRC Inactive.

Optionally, the receiving unit 620 is also used to: to the second session management network element send control information it Before, receive the control information from policy control functions network element.

Optionally, the third request message carries at least one of following message: end belonging to first session The identification information of end equipment, the identification information of first session, the identification information of the second session management network element and institute State the identification information for the user plane functions network element that the second session management network element is controlled.

Optionally, the transmission unit 610 is also used to: according to the third request message, the second session management of Xiang Suoshu Network element sends the first response message, and first response message carries at least one of following message: the first session institute The identification information of the terminal device of category, the identification information of first session, tunnel information and the first session management net The identification information for the user plane functions network element that member is controlled.

It should be understood that device 600 here is embodied in the form of functional unit.Here term " unit " can refer to using special There are integrated circuit (application specific integrated circuit, ASIC), electronic circuit, for executing one The processor (such as shared processor, proprietary processor or group processor etc.) and storage of a or multiple softwares or firmware program Device merges logic circuit and/or other appropriate components for supporting described function.In an optional example, this field skill Art personnel are appreciated that device 600 can be specially the first session management network element in above method embodiment, and device 600 can To be used to execute each process corresponding with the first session management network element and/or step in above method embodiment, to avoid weight Multiple, details are not described herein.

Fig. 7 shows communication device 700 provided by the embodiments of the present application, and described device 700 can be the second meeting above-mentioned Managed network element is talked about, which includes:

Receiving unit 710, for receiving the second request from mobile management network element or the first session management network element Message, the first conversation establishing session context that second request message is used to that the communication device to be requested to be terminal device；

Transmission unit 720, for sending third request message to the first session management network element, the third request disappears Breath is for requesting to establish first session or updating first session；

Acquiring unit 730, for obtaining control information, the control information is for indicating first session described logical Signaling processing mode at T unit.

Optionally, information is locally configured for the communication device in the control information；Or the control information is to make With the information determined by the second session management network element according to the information from user plane functions network element when local policy；Or the control Information processed comes from the first session management network element；Or the control information comes from policy control functions network element.

Optionally, the signaling processing mode includes following at least one: the first signaling processing mode, first signaling Processing mode is the hand off signaling that first session is handled by the communication device；Second signaling processing mode, described second Signaling processing mode is that the Release radio resource signaling of first session is handled by the communication device；Third signaling processing side Formula, the third signaling processing mode are the letter for handling the terminal device by the communication device and going to connected state from Idle state Enable or gone to from the inactive RRC Inactive state of wireless heterogeneous networks non-RRC Inactive connected state signaling.

Optionally, the third request message carries at least one of following message: the mark letter of the terminal device The user that breath, the identification information of first session, the identification information of the communication device and the communication device are controlled The identification information of face functional network element.

Optionally, the receiving unit 710 is also used to: sending third request message to the first session management network element Later, the first response message from the first session management network element is received, first response message carries following message At least one of: the identification information of the terminal device, the identification information of first session, tunnel information and described The identification information for the user plane functions network element that one session managed network element is controlled.

It should be understood that device 700 here is embodied in the form of functional unit.Here term " unit " can refer to using special There are integrated circuit (application specific integrated circuit, ASIC), electronic circuit, for executing one The processor (such as shared processor, proprietary processor or group processor etc.) and storage of a or multiple softwares or firmware program Device merges logic circuit and/or other appropriate components for supporting described function.In an optional example, this field skill Art personnel are appreciated that device 700 can be specially the second session management network element in above method embodiment, and device 700 can To be used to execute each process corresponding with the second session management network element and/or step in above method embodiment, to avoid weight Multiple, details are not described herein.

Fig. 8 shows communication device 800 provided by the embodiments of the present application, and described device 800 can be mobility above-mentioned Managed network element, the device 800 include:

Receiving unit 810, for receiving the first request message from the first session management network element, first request disappears Breath is for requesting newly-increased session management network element；

The receiving unit 810 is also used to:

Receive the session establishment request message from the terminal device, the session establishment request message for request with The first session management network element establishes connection；

Transmission unit 820, for according to the session establishment request message, Xiang Suoshu the second session management network element sends the Two request messages, second request message are used to that the first session that the second session management network element is terminal device to be requested to be created Build session context.

It should be understood that device 800 here is embodied in the form of functional unit.Here term " unit " can refer to using special There are integrated circuit (application specific integrated circuit, ASIC), electronic circuit, for executing one The processor (such as shared processor, proprietary processor or group processor etc.) and storage of a or multiple softwares or firmware program Device merges logic circuit and/or other appropriate components for supporting described function.In an optional example, this field skill Art personnel are appreciated that device 800 can be specially the mobile management network element in above method embodiment, and device 800 can be with For executing each process corresponding with mobile management network element and/or step in above method embodiment, to avoid repeating, This is repeated no more.

Device 600, device 700 and the device 800 of above-mentioned each scheme, which have, realizes the first session management in the above method The function for the corresponding steps that network element, the second session management network element and mobile management network element execute；The function can be by hard Part is realized, corresponding software realization can also be executed by hardware.The hardware or software include one or more and above-mentioned function It can corresponding module；Such as transmission unit can be substituted by transmitter, receiving unit can be substituted by receiver, Qi Tadan Member, such as determination unit can be substituted by processor, execute respectively in each embodiment of the method transmitting-receiving operation and it is relevant Processing operation.

In embodiments herein, device of the Fig. 6 into Fig. 8 is also possible to chip or chip system, such as: on piece system It unites (system on chip, SoC).Corresponding, receiving unit and transmission unit can be the transmission circuit of the chip, herein not It limits.

Fig. 9 shows another communication device 900 provided by the embodiments of the present application.The device 900 includes processor 910, receives Send out device 920 and memory 930.Wherein, processor 910, transceiver 920 and memory 930 are mutually communicated by internal connecting path Letter, for storing instruction, which is used to execute the instruction of the memory 930 storage to the memory 930, should with control Transceiver 920 sends signal and/or receives signal.

Wherein, if the communication device 900 be the first session management network element, the processor 910 be used for by transceiver 920 to Mobile management network element sends the first request message, and first request message is for requesting newly-increased session management network element；Pass through The transceiver 920 receives the third request message from the second session management network element, and the third request message is built for requesting Vertical first session updates first session；Control letter is sent to the second session management network element by the transceiver 920 Breath, the control information is for indicating signaling processing mode of first session at the second session management network element.

If the communication device 900 be the second session management network element, the processor 910 be used for by transceiver 920 receive come From mobile management network element or the second request message of the first session management network element, second request message is for requesting institute State the first conversation establishing session context that the second session management network element is terminal device；By the transceiver 920 to described One session managed network element sends third request message, and the third request message establishes first session or update for requesting First session；Control information is obtained, the control information is for indicating first session in second session management Signaling processing mode at network element.

Optionally, which may include read-only memory and random access memory, and refer to processor offer Order and data.The a part of of memory can also include nonvolatile RAM.For example, memory can also store The information of device type.The processor 910 can be used for executing the instruction stored in memory, and when the processor 910 is held When the instruction stored in line storage, the processor 910 is for executing above-mentioned and the first session management network element, the second session management The each step and/or process of network element or the corresponding embodiment of the method for mobile management network element.

It should be understood that above-mentioned transceiver may include transmitter and receiver.Transceiver can further include antenna, The quantity of antenna can be one or more.Memory can be an individual device, also can integrate in the processor.On The each device or part of devices stated, which are desirably integrated into chip, to be realized, is such as integrated into baseband chip and is realized.

Transceiver in embodiments herein, Fig. 9 is also possible to communication interface, it is not limited here.

In present embodiments, for aspect understanding, a variety of illustrations have been carried out.However, these examples are only It is only some citings, is not meant to be the best implementation for realizing the application.

In present embodiments, description for convenience uses request message, response message and other is each The title of kind message.However, these message only illustrate the function of needing the content or realization that carry by way of example, disappear The specific name of breath not to the restriction of making of the application, such as: can also be first message, second message, third message etc.. These message can be specific some message, can be certain fields in message.These message can also represent various clothes Businessization operation.

It will also be appreciated that in the embodiment of the present application, the processor of above-mentioned apparatus can be central processing unit (central Processing unit, CPU), which can also be other general processors, digital signal processor (digital Signal processor, DSP), specific integrated circuit (application specific integrated circuit, ASIC), field programmable gate array (field-programmable gate array, FPGA) or other programmable logic Device, discrete gate or transistor logic, discrete hardware components etc..General processor can be microprocessor or this at Reason device is also possible to any conventional processor etc..

During realization, each step of the above method can by the integrated logic circuit of the hardware in processor or The instruction of software form is completed.The step of method in conjunction with disclosed in the embodiment of the present application, can be embodied directly in hardware processor Execute completion, or in processor hardware and software unit combination execute completion.Software unit can be located at random storage Device, flash memory, read-only memory, this fields such as programmable read only memory or electrically erasable programmable memory, register at In ripe storage medium.The storage medium is located at memory, and processor executes the instruction in memory, completes in conjunction with its hardware The step of stating method.To avoid repeating, it is not detailed herein.

In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program Product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all or It partly generates according to process or function described in the embodiment of the present application.The computer can be general purpose computer, dedicated meter Calculation machine, computer network or other programmable devices.The computer instruction can store in computer readable storage medium In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center User's line (digital subscriber line, DSL) or wireless (such as infrared, wireless, microwave etc.) mode are to another net Website, computer, server or data center are transmitted.The computer readable storage medium can be computer can Any usable medium of access either includes the data storage such as one or more usable mediums integrated server, data center Equipment.The usable medium can be magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or half Conductive medium (such as solid state hard disk (solid state disk, SSD)) etc..

Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed Scope of the present application.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit It closes or communicates to connect, can be electrical property, mechanical or other forms.

The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.

It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.

It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product It is stored in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially in other words The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a People's computer, server or network equipment etc.) execute each embodiment the method for the application all or part of the steps. And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (read-only memory, ROM), arbitrary access are deposited The various media that can store program code such as reservoir (random access memory, RAM), magnetic or disk.

The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain Lid is within the scope of protection of this application.Therefore, the protection scope of the application should be based on the protection scope of the described claims.

Claims

1. a kind of communication means characterized by comprising

First session management network element sends the first request message to mobile management network element, and first request message is for requesting Newly-increased session management network element；

The first session management network element receives the third request message from the second session management network element, and the third request disappears Breath is for requesting to establish the first session or updating first session；

The first session management network element sends control information to the second session management network element, and the control information is used for table Show signaling processing mode of first session at the second session management network element.

2. the method according to claim 1, wherein in the first session management network element to mobile management network Before member sends the first request message, the method also includes:

In the case where signaling overload at the first session management network element, the first session management network element is to the movement Property managed network element send first request message.

3. method according to claim 1 or 2, which is characterized in that the signaling processing mode includes following at least one:

First signaling processing mode, the first signaling processing mode are by the second session management network element processing described first The hand off signaling of session；

Second signaling processing mode, the second signaling processing mode are by the second session management network element processing described first The Release radio resource signaling of session；And

Third signaling processing mode, the third signaling processing mode are by the second session management network element processing described first Terminal device belonging to session from Idle state goes to the signaling of connected state or from the inactive RRC of wireless heterogeneous networks Inactive state goes to the signaling of the connected state of non-RRC Inactive.

4. according to the method in any one of claims 1 to 3, which is characterized in that the first session management network element to Before the second session management network element sends control information, the method also includes:

5. method according to claim 1 to 4, which is characterized in that the method also includes:

The first session management network element sends the first sound according to the third request message, Xiang Suoshu the second session management network element Message is answered, first response message carries at least one of following message:

The identification information of terminal device belonging to first session, the identification information of first session, tunnel information and The identification information for the user plane functions network element that the first session management network element is controlled.

6. a kind of communication means characterized by comprising

Second session management network element receives the second request message from mobile management network element or the first session management network element, Second request message is used to request the first conversation establishing session that the second session management network element is terminal device or more Text；

The second session management network element sends third request message to the first session management network element, and the third request disappears Breath is for requesting to establish first session or updating first session；

The second session management network element obtains control information, and the control information is used to indicate first session described the Signaling processing mode at two session management network elements.

7. according to the method described in claim 6, it is characterized in that, the control information is the second session management network element Information is locally configured；Or

The control information is by the second session management network element when using local policy according to from user plane functions network element The information that information determines；Or

The control information comes from the first session management network element；Or

The control information comes from policy control functions network element.

8. method according to claim 6 or 7, which is characterized in that the signaling processing mode includes following at least one:

Second signaling processing mode, the second signaling processing mode are by the second session management network element processing described first The Release radio resource signaling of session；

Third signaling processing mode, the third signaling processing mode are to handle the terminal by the second session management network element Equipment goes to the signaling of connected state from Idle state or goes to non-RRC from the inactive RRC Inactive state of wireless heterogeneous networks The signaling of the connected state of Inactive.

9. the method according to any one of claim 6 to 8, which is characterized in that the second session management network element to After the first session management network element sends third request message, the method also includes:

The second session management network element receives the first response message from the first session management network element, first sound Message is answered to carry at least one of following message:

The identification information of the terminal device, the identification information of first session, tunnel information and the first session pipe The identification information for the user plane functions network element that reason network element is controlled.

10. a kind of communication means characterized by comprising

Mobile management network element receives the first request message from the first session management network element, and first request message is used for Request newly-increased session management network element；

The mobile management network element receives the session establishment request message from the terminal device, the session establishment request Message establishes connection with the first session management network element for requesting；

The mobile management network element sends second according to the session establishment request message, Xiang Suoshu the second session management network element Request message, the first conversation establishing that second request message is used to that the second session management network element to be requested to be terminal device Session context.

11. a kind of communication device characterized by comprising

Transmission unit, for sending the first request message to mobile management network element, first request message is for that please look for novelty Increase session management network element；

Receiving unit, for receiving the third request message from the second session management network element, the third request message is used for Request establishes the first session or updates first session；

The transmission unit is also used to:

Control information is sent to the second session management network element, the control information is for indicating first session described Signaling processing mode at second session management network element.

12. communication device according to claim 11, which is characterized in that the communication device further include:

Processing unit, for determining at the communication device before sending the first request message to mobile management network element Whether signaling overloads；

The transmission unit is specifically used for:

In the case where signaling overload at the communication device, Xiang Suoshu mobile management network element sends first request and disappears Breath.

13. communication device according to claim 11 or 12, which is characterized in that the signaling processing mode include it is following extremely Few one kind:

14. communication device described in any one of 1 to 13 according to claim 1, which is characterized in that the receiving unit is also used In:

Before sending control information to the second session management network element, the control from policy control functions network element is received Information processed.

15. communication device described in any one of 1 to 14 according to claim 1, which is characterized in that the transmission unit is also used In:

According to the third request message, Xiang Suoshu the second session management network element sends the first response message, first response Message carries at least one of following message:

16. a kind of communication device characterized by comprising

Receiving unit, for receiving the second request message from mobile management network element or the first session management network element, institute It is the first conversation establishing session context of terminal device that the second request message, which is stated, for requesting the communication device；

Transmission unit, for sending third request message to the first session management network element, the third request message is used for Request establishes first session or updates first session；

Acquiring unit, for obtaining control information, the control information is for indicating first session in the communication device The signaling processing mode at place.

17. communication device according to claim 16, which is characterized in that the control information is the sheet of the communication device Ground configuration information；Or

The control information comes from policy control functions network element.

18. communication device according to claim 16 or 17, which is characterized in that the signaling processing mode include it is following extremely Few one kind:

First signaling processing mode, the first signaling processing mode are to handle cutting for first session by the communication device Change signaling；

Second signaling processing mode, the second signaling processing mode are that the nothing of first session is handled by the communication device Line resource release signaling；

Third signaling processing mode, the third signaling processing mode are that the terminal device is handled by the communication device from sky Not busy state goes to the signaling of connected state or goes to non-RRC Inactive from the inactive RRC Inactive state of wireless heterogeneous networks Connected state signaling.

19. communication device described in any one of 6 to 18 according to claim 1, which is characterized in that the receiving unit is also used In:

After sending third request message to the first session management network element, receives and come from the first session management network element The first response message, first response message carries at least one of following message:

20. a kind of communication device characterized by comprising

Receiving unit, for receiving the first request message from the first session management network element, first request message is used for Request newly-increased session management network element；

The receiving unit is also used to:

Receive the session establishment request message from the terminal device, the session establishment request message for request with it is described First session management network element establishes connection；

Transmission unit, for according to the session establishment request message, Xiang Suoshu the second session management network element to send the second request Message, the first conversation establishing session that second request message is used to that the second session management network element to be requested to be terminal device Context.