CN111031498A

CN111031498A - Network architecture supporting 5G terminal short message service and construction method thereof

Info

Publication number: CN111031498A
Application number: CN201811176044.4A
Authority: CN
Inventors: 张磊; 孙立波; 黄小兵; 孙学真
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2018-10-10
Filing date: 2018-10-10
Publication date: 2020-04-17
Anticipated expiration: 2038-10-10
Also published as: CN111031498B; WO2020073943A1

Abstract

The invention discloses a network architecture supporting 5G terminal short message service and a construction method thereof, wherein the network architecture comprises the following steps: SMSF and preset short message intercommunication equipment; the preset short message intercommunication equipment is connected with the SMSF through a first preset service interface; the first preset service interface realizes the uplink short message service between the first preset service interface and the SMSF at the side of the preset short message intercommunication equipment, and realizes the downlink short message service between the first preset service interface and the preset short message intercommunication equipment at the side of the SMSF. The invention realizes the short message service of the 5G terminal, in particular to the short message receiving and sending function of the terminal of the Internet of things under the 5G network on the basis of supporting the short message service of the prior generation terminal by adding a first preset service interface between the SMSF and the preset short message intercommunication equipment for realizing the short message service function service and simultaneously providing the domain selection and the retransmission function of the terminal call short message by the preset short message intercommunication equipment.

Description

Network architecture supporting 5G terminal short message service and construction method thereof

Technical Field

The invention relates to the field of mobile communication, in particular to a network architecture supporting a 5G terminal short message service and a construction method thereof.

Background

Short messages are a type of telecommunications service that accompanies digital mobile communication systems, which carry alphanumeric or text information through signaling channels and signaling networks of the mobile communication system. Because of the characteristics of accurate and reliable short messages and convenient and fast intercommunication, the 2/3G era has once become a mobile service with the highest popularity of mobile users, bringing convenience to users and huge income to operators. Development of the Over The Top (OTT) type Application and rich media communication (RCS) service in the 4G era branches most of Point-to-Point (P2P) short messages, and the main transmission in the mobile network is the Application-issued industry type short message (A2P, Application to Point).

The fifth Generation mobile phone mobile communication standard (5G, 5th-Generation) adds Machine Type Communication (MTC) application scenarios on the basis of the previous Generation, and the terminals and networks are divided into two major categories, namely "human network" (network for terminal communication used by human beings) and "internet of things" (network for internet of things communication), and meanwhile, the 5G terminal short message service has the following 2 main application scenarios:

(1) Over-The-Air (Over-The-Air): dynamic downloading, deleting and updating of a 5G terminal service menu are realized in a short message mode, so that the terminal obtains personalized information service;

(2) IP session wakeup: in order to meet the low power consumption requirement of part of 5G terminals in an MTC scene, the terminals are in a dormant state at ordinary times, and when needed, the network side activates the IP session of the terminals in a short message mode.

In a "man-machine network" scenario, a 5G terminal using Voice as a center (Voice center) still needs to rely on an IP Multimedia Subsystem (IMS) network to provide Voice Service, and at this time, a Short Message Service over IP (SMS over IP) scheme based on a 5G network is usually adopted to provide Short Message Service. The "internet of things" terminal (Data center) does not depend on the IMS network, and generally adopts a short message Service over Non-Access Stratum (SMS over NAS) scheme to provide short message Service, while the prior art protocol standard does not support the SMS over NAS scheme in the 5G network.

Disclosure of Invention

The invention provides a network architecture supporting a 5G terminal short message service and a construction method thereof, which are used for solving the problem that the protocol standard in the prior art does not support an SMS over NAS scheme under a 5G network.

To solve the above technical problem, in one aspect, the present invention provides a network architecture for supporting a short message service of a 5G terminal, including: the 5G short message service function equipment SMSF is used for realizing the registration and/or the logout function of the short message of the 5G terminal and the forwarding of the initial call and/or the final call short message; the preset short message intercommunication equipment is used for realizing the functions of short message intercommunication, short message sending domain selection and short message resending among the 5G terminals; the preset short message intercommunication equipment is connected with the 5G short message service function equipment through a newly added first preset service interface; the first preset service interface realizes the following service definitions between the first preset service interface and the 5G short message service function equipment on the side of the preset short message intercommunication equipment: an uplink short message service; the first preset service interface realizes the following service definitions between the 5G short message service function device side and the preset short message intercommunication device: and (4) downlink short message service.

Further, still include: the short message center SMSC is used for realizing the functions of storing, forwarding and retrying the short message of the 5G terminal; the 5G access and mobility management function device AMF is used for realizing the mobility and access management functions of the 5G terminal; and the unified data management device UDM is used for realizing the functions of managing and storing the subscription data and/or the authentication data of the 5G terminal user.

Further, the preset short message interworking device is one of the following devices: IP short message gateway IP-SM-GW, non-access stratum short message gateway SMS-GW, said short message center SMSC.

Further, the first preset servitization interface further implements the following service definitions with the SMSF at the preset short message interworking equipment side: short message service registration/deregistration service.

Further, in a case that the preset short message interworking device is an IP-SM-GW, the IP-SM-GW is connected to the UDM by adding a second preset servization interface, where the second preset servization interface implements the following service definitions between the IP-SM-GW and the UDM: and inquiring the SMSF address service.

Further, under the condition that the preset short message intercommunication equipment is IP-SM-GW or SMS-GW, the SMSC is connected with the preset short message intercommunication equipment through an E interface and/or an SGd interface; the AMF is connected with the SMSF through an N20 interface, and is connected with a 5G terminal through an N1 interface; the UDM is connected with the preset short message intercommunication equipment through an Sh interface and/or a C interface, connected with the SMSF through an N21 interface, connected with the SMSC through a C interface and/or an S6C interface, and connected with the AMF through an N8 interface.

Further, in the case that the preset short message interworking equipment is an SMSC, the AMF is connected to the SMSF through an N20 interface, and is connected to the 5G terminal through an N1 interface; the UDM is connected with the SMSC through an Sh interface and/or a C interface, connected with the SMSF through an N21 interface, and connected with the AMF through an N8 interface.

On the other hand, the invention also provides a method for constructing a network architecture supporting the short message service of the 5G terminal, which comprises the following steps: a first preset service interface is newly added between the 5G short message service function equipment SMSF and the preset short message intercommunication equipment; the SMSF is used for realizing the registration and/or the logout functions of the short messages of the 5G terminal and forwarding the initial call and/or the final call short messages; the preset short message intercommunication equipment is used for realizing the functions of short message intercommunication, short message sending domain selection and short message resending among the 5G terminals; the first preset service interface realizes the following service definitions between the first preset service interface and the 5G short message service function equipment on the side of the preset short message intercommunication equipment: an uplink short message service; the first preset service interface realizes the following service definitions between the 5G short message service function device side and the preset short message intercommunication device: and (4) downlink short message service.

Further, the preset short message interworking device is one of the following devices: IP short message gateway IP-SM-GW, non-access layer short message gateway SMS-GW, short message center SMSC.

Further, in a case that the preset short message interworking device is an IP-SM-GW, after a first preset serving interface is newly added between the 5G short message service function device SMSF and the preset short message interworking device, the method further includes: a second preset service interface is newly added between the IP-SM-GW and the unified data management device UDM; the UDM is configured to implement a function of managing and storing subscription data and/or authentication data of a 5G terminal user, and the second preset serving interface implements the following service definitions between the IP-SM-GW side and the UDM: and inquiring the SMSF address service.

Further, in the case that the preset short message interworking device is an IP-SM-GW or an SMs-GW, the method of constructing further includes: connecting a short message center (SMSC) and the preset short message intercommunication equipment through an E interface and/or an SGd interface, wherein the SMSC is used for realizing the functions of storing, forwarding and retrying the short message of the 5G terminal; connecting the SMSF with a 5G access and mobility management function (AMF) device through an N20 interface, wherein the AMF is used for realizing the mobility and access management functions of a 5G terminal; connecting the preset short message intercommunication equipment and the unified data management equipment UDM through an Sh interface and/or a C interface; connecting the SMSF and the UDM through an N21 interface; connecting the SMSC to the UDM through a C interface and/or an S6C interface; connecting the AMF and the UDM through an N8 interface.

Further, in a case that the preset short message interworking device is an SMSC, the constructing method further includes: connecting the SMSF and a 5G access and mobility management function (AMF) device through an N20 interface; connecting the SMSC with a unified data management device (UDM) through an Sh interface and/or a C interface; connecting the SMSF and the UDM through an N21 interface; connecting the AMF and the UDM through an N8 interface.

The invention realizes the short message service function service between the 5G short message service function equipment and the preset short message intercommunication equipment by additionally arranging a first preset service interface between the 5G short message service function equipment and the preset short message intercommunication equipment, and simultaneously provides the domain selection and retransmission functions of the terminal call short message by the preset short message intercommunication equipment, thereby realizing the short message service of the 5G terminal, in particular the short message receiving and sending functions of the Internet of things terminal under the 5G network on the basis of supporting the short message service of the prior generation terminal.

Drawings

Fig. 1 is a schematic diagram of a network architecture when a short message interworking device is preset as an IP-SM-GW in a first embodiment of the present invention;

fig. 2 is a flowchart illustrating a short message service function registration process from the SMSF to the IP-SM-GW when the short message interworking device is preset to be the IP-SM-GW in the first embodiment of the present invention;

fig. 3 is a flowchart illustrating a SMs service function deregistration procedure from the SMSF to the IP-SM-GW when the predetermined SMs interworking device is the IP-SM-GW in the first embodiment of the present invention;

fig. 4 is a schematic flow chart illustrating that a 5G terminal initiates an MO short message when a short message interworking device is preset as an IP-SM-GW in the first embodiment of the present invention;

FIG. 5 is a flowchart illustrating that the MT short message is sent from the IP-SM-GW domain to the 5G network when the short message interworking device is preset as the IP-SM-GW in the first embodiment of the present invention;

fig. 6 is a schematic diagram of a network architecture when the SMS-GW is preset as the short message interworking device in the first embodiment of the present invention;

fig. 7 is a schematic diagram of a network architecture when the short message interworking apparatus is preset to be an SMSC according to the first embodiment of the present invention;

fig. 8 is a schematic diagram of a network architecture when the interworking device of short messages is IP-SM-GW and a second predetermined serving interface between the IP-SM-GW and the UDM is newly added in the first embodiment of the present invention;

fig. 9 is a flowchart illustrating a process of selecting a 5G network from an IP-SM-GW for an MT short message when a second predetermined service interface between an IP-SM-GW and a UDM is newly added in the first embodiment of the present invention;

fig. 10 is a schematic diagram of a network architecture for implementing a 5G terminal short message service between an SMSF and an IP-SM-GW through an SGd or E interface in the first embodiment of the present invention;

fig. 11 is a schematic flowchart of a process in which an SMSF supports an E interface 5G terminal to submit an MO short message in the first embodiment of the present invention;

fig. 12 is a schematic flow chart of the MT short message issued by the SMSF supporting E interface SMSC in the first embodiment of the present invention;

fig. 13 is a schematic flowchart of a process in which an SMSF supports an SGd interface 5G terminal to submit an MO short message in the first embodiment of the present invention;

fig. 14 is a flowchart illustrating that the SMSF supports the SGd interface SMSC to issue the MT short message in the first embodiment of the present invention.

Detailed Description

In order to solve the problem that the 5G network architecture in the prior art cannot realize the normal operation of the terminal short message service, the invention provides a network architecture supporting the 5G terminal short message service and a construction method thereof, and the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

A first embodiment of the present invention provides a network architecture for supporting a short message service of a 5G terminal, which mainly includes: the system comprises 5G Short Message Service Function equipment (SMSF) and preset Short Message intercommunication equipment, wherein the SMSF is used for realizing the registration and/or the logout Function of the Short Message of the 5G terminal and starting the forwarding of a calling and/or a terminal calling Short Message, and the preset Short Message intercommunication equipment is used for realizing the Short Message intercommunication, the Short Message issuing domain selection and the Short Message retransmitting Function among the 5G terminals; the preset short message intercommunication equipment is connected with the SMSF through a first preset service interface; the first preset service interface realizes uplink short message service Nipsmmw _ SMService _ UplinkSMS _ Request/Response between the first preset service interface and the SMSF at the preset short message intercommunication equipment side, and realizes downlink short message service Nsmsf _ SMService _ DownlinkSMS _ Request/Response between the first preset service interface and the SMSF at the SMSF side.

Meanwhile, for the completeness of the network architecture, the present embodiment further includes the following devices: the Short Message Service system comprises a Short Message Center (SMSC), a 5G access and mobility management function device (AMF) and a Unified data management device (UDM), wherein the SMSC is used for realizing the functions of storing, forwarding and retrying the Short Message of the 5G terminal; the AMF is used for realizing the moving and access management functions of the 5G terminal; the UDM is used to implement the functions of managing and storing subscription data and/or authentication data of a 5G terminal user, and it should be understood that, in some cases, the UDM may also be replaced by a Home Location Register (HLR) or a Home Subscriber Server (HSS), where the HLR and the HSS are mainly core network elements in a 3G and/or 4G network, and the UDM is mainly applied to a 5G network. It should be appreciated that, typically, the UDM will be deployed in a converged manner with the HLR and/or HSS to meet the normal operation of the network architecture.

Specifically, the preset short message interworking device may be one of the following devices: an IP Short Message Gateway (IP-SM-GW, IP-Short Message Gateway), a non-access stratum Short Message Gateway (SMs-GW), and a Short Message center SMSC, where connection modes and interfaces used between devices in a network structure are different for different specific devices used by a preset Short Message interworking device, and detailed descriptions are provided below with reference to fig. 1 to 11 for a specific connection mode corresponding to the preset Short Message interworking device and a flow for implementing a Short Message Service.

When the preset short message intercommunication equipment is any one of IP-SM-GW, SMS-GW or SMSC, the first preset service interface also realizes short message service registration (Nipsmgw _ SMService _ Activate _ Request/Response) and logout service (Nipsmgw _ SMService _ DeactivationRequest/Response) between the first preset service interface and the SMSF at the preset short message intercommunication equipment side, and is used for realizing a unified registration management flow of the terminal user.

Taking an IP-SM-GW as an example, a schematic diagram of a network architecture is shown in fig. 1, where a preset short message interworking device is an IP-SM-GW, a first preset service interface between the IP-SM-GW and an SMSF implements a short message service registration/deregistration service and an uplink short message service and a downlink short message service, and the SMSC and the IP-SM-GW are connected through an E interface and/or an SGd interface; the AMF is connected with the SMSF through an N20 interface, and is connected with the 5G terminal through an N1 interface; the UDM is connected with the IP-SM-GW through an Sh interface and/or a J interface, connected with the SMSF through an N21 interface, connected with the SMSC through a C interface and/or an S6C interface, and connected with the AMF through an N8 interface.

At this time, the flowchart of the SMs service function registration flow from the SMSF to the IP-SM-GW is as shown in fig. 2, after receiving the SMs service registration service Request sent by the AMF, the SMSF executes a nipsmmgw _ SMService _ Activate _ Request to the IP-SM-GW, and the message carries information such as an SMSF address, an access type, and a SUPI. If the IP-SM-GW has the SMSoverIP registration address of the terminal, the IP-SM-GW only needs to record the SMSF registration address of the terminal and does not need to initiate a registration process of the UDM; if the IP-SM-GW does not have the SMSoverIP registration address of the terminal, the IP-SM-GW needs to perform registration to the UDM.

Correspondingly, the flow chart of the SMs service function deregistration flow from the SMSF to the IP-SM-GW is as shown in fig. 3, after receiving the SMs service deregistration service Request sent by the AMF, the SMSF executes a nipsmmgw _ SMService _ deactivating _ Request to the IP-SM-GW, and the message carries information such as an SMSF address, an access type, and a SUPI. If the IP-SM-GW locally stores the SMSoverIP registration address record of the terminal, the IP-SM-GW only needs to delete the local record and does not need to initiate a logout process to the UDM; if the IP-SM-GW does not locally store the SMSoverIP registration address record of the terminal, the IP-SM-GW needs to initiate the logout to the UDM.

Fig. 4 shows a schematic flow chart of a 5G terminal initiating a call initiated short Message (MO) when the short Message interworking device is preset to be an IP-SM-GW, and mainly includes the following steps:

1) a User Equipment (UE) triggers a service request;

2) the UE submits the MO short message to the AMF;

3) AMF forwards MO short message to SMSF;

4) SMSF obtains IP-SM-GW address according to local configuration or NRF query, and MO short message is forwarded to IP-SM-GW;

5) the SMSF returns a CP layer response to the AMF;

6) the AMF forwards the CP layer response to the UE;

7) the IP-SM-GW forwards the MO short message to the SMSC;

8) SMSF returns MO response to IP-SM-GW;

9) the IP-SM-GW returns an MO response to the SMSF;

10) SMSF forwards MO response to AMF;

11) the AMF forwards the MO response to the UE;

12) the UE returns a CP layer response to the AMF;

13) the AMF forwards the CP layer response to the SMSF.

As can be seen from the above, after receiving an MO short message (SMS body) request submitted by a 5G terminal forwarded by the AMF, the SMSF invokes an uplink short message service to forward to the IP-SM-GW, where the message carries information such as SUPI and SMS payload, where the SMSpayload carries information related to an RP layer of the short message, including fields such as a short message type and a short message content; after receiving MO short message response (Submit Report) returned by SMSC, IP-SM-GW calls down short message service to forward to SMSF, and the message carries information of SUPI and SMS payload.

Correspondingly, fig. 5 shows a schematic flow chart of a terminating short Message (MT) sent by a 5G network selected by the IP-SM-GW domain, which mainly includes the following steps:

1) SMSC sends down MT message, firstly, it sends up MAP route inquiry request to UDM/HSS/HLR;

2) the UDM/HSS/HLR forwards the MAP routing query SRI message to the IP-SM-GW;

3) the IP-SM-GW returns the GT address of the IP-SM-GW to the SMSC;

4) SMSC delivers MT message to IP-SM-GW according to the GT address;

5) IP-SM-GW executes domain selection and delivers MT short message to SMSF;

6-7) initiating Namf _ MT _ EnableUEReactivity of the AMF by the SMSF, so that the AMF initiates paging to the UE;

8-9) the SMSF sends the short message to an AMF (advanced metering framework), and the AMF sends the short message to the UE;

10) UE returns RP layer MT message response to AMF, AMF forwards RP MT Ack to SMSF;

11) the SMSF returns MT Ack to the IP-SM-GW;

12) SMSF returns CP layer response to AMF;

13) the IP-SM-GW returns an MT response to the SMSC;

14) the IP-SM-GW returns a state issuing report to the UDM/HSS/HLR;

15) SMSC returns down state report to UDM/HSS/HLR.

As can be seen from the above, the IP-SM-GW executes the sending domain selection after receiving the MT short message request sent by the SMSC. The IP-SM-GW can execute domain selection, sending and retransmission of a 5G network, an IMS domain or a CS domain according to local configuration. If the domain selection 5G network is issued, the IP-SM-GW calls a downlink short message service provided by the SMSF to forward the downlink short message service to the SMSF, and the message carries information such as SUPI (super identity) and SMSpanyload; after receiving MT response (Delivery Report), the SMSF calls an uplink short message service provided by the IP-SM-GW to forward to the IP-SM-GW, and the message carries information such as SUPI (super identity) and SMS (short message service) payload; and after receiving the MT response returned by the SMSF, the IP-SM-GW returns an MT response MAP-MT-forwarded-SM-Ack to the SMSC, and returns a MAP-Report-Delivery-Status to the UDM/HSS/HLR.

It should be understood that, in the case that an IP-SM-GW is not built on the network side, a function similar to that of the IP-SM-GW can be executed by newly building an SMs-GW network element device instead of the IP-SM-GW, at this time, a connection schematic diagram of the network architecture is shown in fig. 6, and a connection mode between devices, a used interface, and the like are completely the same as those of the IP-SM-GW, and details are not repeated here.

When the preset short message interworking equipment is SMSC, the current network architecture connection schematic diagram is shown in fig. 7, and when an operator does not construct IP-SM-GW in actual application, the support for the 5G terminal short message service is realized by a mode that the existing SMSC fuses the functions of the IP-SM-GW. The SMSC and the SMSF realize the short message service registration/cancellation service, the uplink short message service and the downlink short message service through a first preset service interface, and the AMF is connected with the SMSF through an N20 interface and connected with the 5G terminal through an N1 interface; the UDM/HSS/HLR is connected with the SMSC through an Sh interface, a C interface and a J interface, connected with the SMSF through an N21 interface and connected with the AMF through an N8 interface. It should be understood that, except for the connection mode, the mode of implementing the 5G terminal short message service by using the SMSC as the preset short message interworking device is completely the same as the mode of implementing the 5G terminal short message service by using the IP-SM-GW as the preset short message interworking device, and details are not repeated herein.

In addition, when the IP-SM-GW is used as the default short message interworking device, a second default serving interface may be newly added between the IP-SM-GW and the UDM/HSS/HLR, where the second default serving interface implements, on the IP-SM-GW side, a query SMSF address service numm _ UECM _ Get Request/Response with the UDM/HSS/HLR, and at this time, the first default serving interface between the IP-SM-GW and the SMSF does not need to implement short message service registration/cancellation service, and only implements uplink/downlink short message service, and at this time, a structural schematic diagram of the network architecture is shown in fig. 8, where numm is the second default serving interface, and implements query SMSF address service numm _ UECM _ Get Request/Response.

Taking the example that the MT short message is issued by the IP-SM-GW domain selected 5G network, fig. 9 shows a flow chart of the flow that the MT short message is issued by the IP-SM-GW domain selected 5G network, the IP-SM-GW calls the numm _ UECM _ Get Request service to the UDM to query the SMSF address (corresponding to

steps

5 and 6 in fig. 9), and then performs the issuing domain selection; if the domain selects the 5G network to send down, the IP-SM-GW calls the Nsmsf _ SMService _ DownlinkSMS service provided by the SMSF to send down the short message. After receiving the terminal call response, the SMSF calls an uplink short message service to return the terminal call response to the IP-SM-GW, wherein the message carries information such as SUPI (secure location identity) and SMS (short message service) payload; after receiving the MT response returned by the SMSF, the IP-SM-GW calls the numdm _ UECM _ Update Request service to report the short message delivery status to the UDM (corresponding to

steps

16 and 17 in fig. 9). It should be understood that the steps in fig. 9 other than

steps

5, 6, 16, and 17 are already described in fig. 5 and will not be described again here.

In this embodiment, a first preset serving interface is additionally provided between the 5G short message service function device and the preset short message interworking device, so as to implement the short message service function service between the devices, and meanwhile, the preset short message interworking device provides the domain selection and retransmission functions of the terminating short message, so that the short message service of the 5G terminal, especially the short message transceiving function of the terminal of the internet of things in the 5G network, is implemented on the basis of supporting the short message service of the prior generation terminal.

In practical application, this embodiment may also be extended to a case where the IP-SM-GW and the SMSF are not docked by using the first preset serving interface, but are docked by using an existing E interface or SGd interface in the device, as shown in fig. 10, at this time, a MAP address or a Diameter address needs to be allocated to the SMSF and registered to the UDM/HSS/HLR to implement a short message transceiving flow of the 5G terminal, at present, the 3GPP standard does not clearly specify how to register the MAP address or the Diameter address of the SMSF to the UDM/HSS/HLR, at this time, MAP address or Diameter address information of the SMSF needs to be newly added to the UDM/HSS/HLR, as shown in table 1:

name (R)	Description of the invention
		smsfNumber	MAP Address of SMSF
smsfDiameterAddress	Diameter Address of SMSF

TABLE 1

The SMSF registers a MAP or Diameter address to the UDM/HSS/HLR by calling the numm UECM Registration service. Fig. 11 and 12 show a schematic flow chart of initiating an MO short message and issuing an MT short message when the SMSF and the IP-SM-GW are connected through an E interface, and fig. 13 and 14 show a schematic flow chart of initiating an MO short message and issuing an MT short message when the SMSF and the IP-SM-GW are connected through an SGd interface.

As shown in fig. 11, the SMSF submits a MAP-MO-Forward-SM message to the SMSC. As shown in fig. 12, the SMSC sends the MT short message to the IP-SM-GW through the E interface, the IP-SM-GW firstly queries the MAP address information of the SMSF from the UDM/HSS/HLR through the C interface, then executes the domain selection for sending, and if the domain selection is sent by the 5G network, the IP-SM-GW sends the MAP-MT-Forward-SM to the SMSF.

As shown in fig. 13, since the existing SMSC does not support the SGd interface, the SMSF submits the MO short message to the IP-SM-GW through the OFR message, and the MO short message is forwarded to the SMSC by the IP-SM-GW through the E interface. As shown in fig. 14, the SMSC issues the MT short message to the IP-SM-GW through the E interface, the IP-SM-GW firstly queries the UDM/HSS/HLR for the Diameter address information of the SMSF through the S6c interface, and then performs the issuing domain selection, and if the IP-SM-GW selects the 5G network for issuing, the IP-SM-GW issues the SMSF using the TFR message.

It should be understood that the use of the E interface or the SGd interface to interface the IP-SM-GW and the SMSF is only an extension of the use of the first preset service interface to interface the IP-SM-GW and the SMSF, and from the perspective of network evolution, the use of the first preset service interface can better realize the support of the short message service of the 5G terminal.

A second embodiment of the present invention provides a method for constructing a network architecture supporting a 5G terminal short message service, which mainly includes step S10: a first preset service interface is newly added between the 5G short message service function equipment SMSF and the preset short message intercommunication equipment; the SMSF is used for realizing the registration and/or the logout functions of the short messages of the 5G terminal and forwarding the initial call and/or the final call short messages; the preset short message intercommunication equipment is used for realizing the functions of short message intercommunication, short message sending domain selection and short message resending among the 5G terminals; the first preset service interface realizes the following service definition between the first preset service interface and the 5G short message service function equipment at the side of the preset short message intercommunication equipment: an uplink short message service; the first preset service interface realizes the following service definition between the first preset service interface and the preset short message intercommunication equipment at the side of the 5G short message service function equipment: and (4) downlink short message service.

Specifically, the short message interworking device is preset to be one of the following devices: IP short message gateway IP-SM-GW, non-access layer short message gateway SMS-GW, short message center SMSC. And the first preset service interface also realizes the following service definition with the SMSF at the side of the preset short message intercommunication equipment: short message service registration/deregistration service.

Further, in a case that the preset short message interworking device is an IP-SM-GW, after a first preset serving interface is newly added between the 5G short message service function device SMSF and the preset short message interworking device, the method further includes step S20: a second preset service interface is newly added between the IP-SM-GW and the unified data management device UDM; the UDM is used for realizing the functions of managing and storing subscription data and/or authentication data of a 5G terminal user, and the second preset service interface realizes the following service definitions between the second preset service interface and the UDM at the side of the IP-SM-GW: query the SMSF address service.

In addition, under the condition that the preset short message intercommunication equipment is IP-SM-GW or SMS-GW, the construction method further comprises the following steps: the method comprises the following steps that a short message center SMSC is connected with preset short message intercommunication equipment through an E interface and/or an SGd interface, wherein the SMSC is used for realizing the functions of storing, forwarding and retrying the short messages of the 5G terminal; connecting the SMSF with 5G access and mobility management function equipment AMF through an N20 interface, wherein the AMF is used for realizing the mobility and access management functions of the 5G terminal; connecting the preset short message intercommunication equipment and the unified data management equipment UDM through an Sh interface and/or a J interface; connecting SMSF and UDM through an N21 interface; connecting the SMSC to the UDM via a C interface and/or an S6C interface; the AMF and the UDM are connected through an N8 interface.

Or, in case that the short message interworking device is preset to be an SMSC, the construction method further includes: connecting SMSF and 5G access and mobility management function (AMF) through an N20 interface; the unified data management device UDM is connected through an Sh interface, a C interface and a J interface; connecting SMSF and UDM through an N21 interface; the AMF and the UDM are connected through an N8 interface.

In this embodiment, a first preset servitization interface is newly added between the SMSF and the preset short message interworking equipment, and the preset short message interworking equipment provides a domain selection and retransmission function of the terminating short message, so as to implement an smsover nas short message scheme of the 5G terminal, and implement a short message service of the 5G terminal, especially a short message transceiving function of an internet of things terminal in a 5G network, on the basis of supporting a short message service of a previous generation terminal.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, and the scope of the invention should not be limited to the embodiments described above.

Claims

1. A network architecture for supporting a 5G terminal short message service, comprising:

the 5G short message service function equipment SMSF is used for realizing the registration and/or the logout function of the short message of the 5G terminal and the forwarding of the initial call and/or the final call short message;

the preset short message intercommunication equipment is used for realizing the functions of short message intercommunication, short message sending domain selection and short message resending among the 5G terminals;

the preset short message intercommunication equipment is connected with the 5G short message service function equipment through a newly added first preset service interface; the first preset service interface realizes the following service definitions between the first preset service interface and the 5G short message service function equipment on the side of the preset short message intercommunication equipment: an uplink short message service; the first preset service interface realizes the following service definitions between the 5G short message service function device side and the preset short message intercommunication device: and (4) downlink short message service.

2. The network architecture of claim 1, further comprising:

the short message center SMSC is used for realizing the functions of storing, forwarding and retrying the short message of the 5G terminal;

the 5G access and mobility management function device AMF is used for realizing the mobility and access management functions of the 5G terminal;

and the unified data management device UDM is used for realizing the functions of managing and storing the subscription data and/or the authentication data of the 5G terminal user.

3. The network architecture of claim 2, wherein the pre-defined short message interworking device is one of: IP short message gateway IP-SM-GW, non-access stratum short message gateway SMS-GW, said short message center SMSC.

4. The network architecture of claim 3, wherein the first predetermined servitization interface further implements the following service definitions with the SMSF at the predetermined short message interworking device side: short message service registration/deregistration service.

5. The network architecture of claim 3, wherein in case that the predetermined short message interworking device is an IP-SM-GW, the IP-SM-GW is connected to the UDM by adding a second predetermined serving interface, and the second predetermined serving interface implements the following service definitions with the UDM on the IP-SM-GW side: and inquiring the SMSF address service.

6. The network architecture according to claim 4 or 5, characterized in that, in case the preset short message interworking device is an IP-SM-GW or an SMs-GW, the SMSC is connected with the preset short message interworking device through an E interface and/or an SGd interface; the AMF is connected with the SMSF through an N20 interface, and is connected with a 5G terminal through an N1 interface; the UDM is connected with the preset short message intercommunication equipment through an Sh interface and/or a J interface, connected with the SMSF through an N21 interface, connected with the SMSC through a C interface and/or an S6C interface, and connected with the AMF through an N8 interface.

7. The network architecture of claim 4, wherein in case the preset short message interworking facility is an SMSC, the AMF is connected with the SMSF through an N20 interface, and with a 5G terminal through an N1 interface; the UDM is connected with the SMSC through an Sh interface, a C interface and a J interface, connected with the SMSF through an N21 interface, and connected with the AMF through an N8 interface.

8. A method for constructing a network architecture supporting a 5G terminal short message service is characterized by comprising the following steps:

a first preset service interface is newly added between the 5G short message service function equipment SMSF and the preset short message intercommunication equipment;

the SMSF is used for realizing the registration and/or the logout functions of the short messages of the 5G terminal and forwarding the initial call and/or the final call short messages;

the first preset service interface realizes the following service definitions between the first preset service interface and the 5G short message service function equipment on the side of the preset short message intercommunication equipment: an uplink short message service; the first preset service interface realizes the following service definitions between the 5G short message service function device side and the preset short message intercommunication device: and (4) downlink short message service.

9. The method according to claim 8, wherein the predetermined short message interworking apparatus is one of: IP short message gateway IP-SM-GW, non-access layer short message gateway SMS-GW, short message center SMSC.

10. The method according to claim 9, wherein the first predetermined servitization interface further implements, on the side of the predetermined short message interworking equipment, the following service definitions with the SMSF: short message service registration/deregistration service.

11. The method according to claim 9, wherein in a case that the predetermined short message interworking device is an IP-SM-GW, after a first predetermined servization interface is newly added between a 5G short message service function device SMSF and the predetermined short message interworking device, the method further comprises:

a second preset service interface is newly added between the IP-SM-GW and the unified data management device UDM;

the UDM is configured to implement a function of managing and storing subscription data and/or authentication data of a 5G terminal user, and the second preset serving interface implements the following service definitions between the IP-SM-GW side and the UDM: and inquiring the SMSF address service.

12. The constructing method of claim 10 or 11, wherein in case that the preset short message interworking apparatus is an IP-SM-GW or an SMs-GW, the constructing method further comprises:

connecting a short message center (SMSC) and the preset short message intercommunication equipment through an E interface and/or an SGd interface, wherein the SMSC is used for realizing the functions of storing, forwarding and retrying the short message of the 5G terminal;

connecting the SMSF with a 5G access and mobility management function (AMF) device through an N20 interface, wherein the AMF is used for realizing the mobility and access management functions of a 5G terminal;

connecting the preset short message intercommunication equipment and the unified data management equipment UDM through an Sh interface and/or a J interface;

connecting the SMSF and the UDM through an N21 interface;

connecting the SMSC to the UDM through a C interface and/or an S6C interface;

connecting the AMF and the UDM through an N8 interface.

13. The constructing method of claim 10, wherein in case that the preset short message interworking apparatus is an SMSC, the constructing method further comprises:

connecting the SMSF and a 5G access and mobility management function (AMF) device through an N20 interface;

connecting the SMSC with a unified data management device (UDM) through an Sh interface, a C interface and a J interface;

connecting the SMSF and the UDM through an N21 interface;

connecting the AMF and the UDM through an N8 interface.