WO2021190496A1

WO2021190496A1 - Short message transmission method, apparatus and device

Info

Publication number: WO2021190496A1
Application number: PCT/CN2021/082363
Authority: WO
Inventors: 张剑寅; 陈旭; 姜怡
Original assignee: 中国移动通信有限公司研究院; 中国移动通信集团有限公司
Priority date: 2020-03-24
Filing date: 2021-03-23
Publication date: 2021-09-30
Also published as: CN113453172A; CN113453172B

Abstract

Provided are a short message transmission method, apparatus and device. The short message transmission method at an IP short message gateway side comprises: receiving a short message sent by an SMSC, wherein the short message carries a short message priority identifier; and issuing the short message priority identifier by means of an IMS domain.

Description

Short message transmission method, device and equipment

Cross-references to related applications

The present invention is filed based on a Chinese patent application with an application number of 202010211249.2 and an application date of March 24, 2020, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated by reference into this application.

Technical field

The present invention relates to the field of communication technology, in particular to a short message transmission method, device and equipment.

Background technique

Short Message Service (SMS, Short Message Service) is one of the basic telecommunication services in the circuit domain and has achieved great success in traditional cellular networks. With the widespread application of Internet Protocol (IP) networks, IP short messaging has also become one of the requirements for telecommunications services. By introducing the IP Short Message Gateway (IP-SM-GW, IP Short Message Gateway), the intercommunication between IP short messages and circuit domain short messages can be realized, and the intercommunication between instant messages and short messages can also be realized.

The circuit domain short message is mainly provided by the short message center and carried by No.7 signaling, while the IP short message is realized by the Session Initiation Protocol (SIP, Session Initiation Protocol) message. In order to reduce the transformation of the current circuit domain and IP Multimedia Subsystem (IMS, IP Multimedia Subsystem), the traditional short message mechanism is reused, and the IP-SM-GW is introduced to provide the IP short message service. The corresponding system network structure diagram is shown in Figure 1. Show. IP-SM-GW mainly realizes the forwarding and mutual conversion of IP short messages and circuit domain short messages, and does not realize functions such as short message storage.

Long-term evolution of the existing network voice bearer (VoLTE, Voice over Long-Term Evolution) and subsequent user fifth generation mobile communication technology (5G, 5 ^th Generation) user (Large network users) will carry a short message using the IP short message service, However, the mechanism of IP short message transmission in related technologies cannot guarantee high-priority short messages to achieve high-reliability transmission. The main manifestations are:

Problem 1: High priority short messages (such as application originating (AO, Application Originating) short messages) cannot guarantee priority delivery in the IP short message network, and it is difficult to meet high-reliability service requirements.

Problem 2: When the IP short message network is overloaded, high-priority short messages cannot be distinguished from ordinary short messages, so there is a risk of being flow-controlled, resulting in failure to reflect high reliability.

Summary of the invention

The invention provides a short message transmission method, device and equipment, which can realize high-reliability transmission of IP short messages.

To solve the above technical problems, the embodiments of the present invention provide the following solutions:

A short message transmission method, applied to IP-SM-GW, and the method includes:

Receiving a short message sent by a Short Message Service Center (SMSC, Short Message Service Center), where the short message carries a short message priority identifier;

The short message priority identifier is delivered through the IMS domain.

The embodiment of the present invention also provides a short message transmission device, which is applied to the IP-SM-GW, and the device includes:

A receiving module, configured to receive a short message sent by the SMSC, the short message carrying a short message priority identifier;

The sending module is configured to deliver the short message priority identifier through the IMS domain.

The embodiment of the present invention also provides a short message transmission method, which is applied to a user plane function (UPF, User Plane Function), and the method includes:

Receive SIP messages encapsulated with short message priority identifiers through the IMS domain;

The SIP message encapsulated with the short message priority identifier is sent to the terminal.

The embodiment of the present invention also provides a short message transmission device, which is applied to UPF, and the device includes:

The receiving module is configured to receive the SIP message encapsulated with the priority identifier of the short message through the IMS domain;

The sending module is configured to send the SIP message encapsulated with the short message priority identifier to the terminal.

The embodiment of the present invention also provides a communication device including: a processor and a memory configured to store a computer program that can run on the processor,

Wherein, the processor is configured to execute the steps of any one of the methods described above when computing the computer program.

The embodiment of the present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of any one of the methods described above.

The above-mentioned solution of the present invention includes at least the following beneficial effects:

In the above solution of the present invention, the short message sent by the SMSC is received through the IP-SM-GW, and the short message carries the short message priority identifier; the short message priority identifier is delivered through the IMS domain. According to the short message priority identifier, the high priority IP short message in the 5G environment can be effectively distinguished, so as to realize the high-reliability transmission of the high priority IP short message.

Description of the drawings

Figure 1 is a schematic diagram of the network structure of the IP-SM-GW system;

Figure 2 is a schematic diagram of an IP short message receiving process (MT process);

Figure 3 is a schematic diagram of the 5G network IP short message system architecture;

Figure 4 is a schematic diagram of a 5G network IP short message redundant transmission scheme;

5 is a schematic flowchart of a method for transmitting short messages on the IP-SM-GW side in an embodiment of the present invention;

Fig. 6 is a schematic diagram of a specific flow of a short message transmission method in an embodiment of the present invention;

7 is a schematic diagram of enhancement points of network elements in the reliable transmission of IP short messages in an embodiment of the present invention;

FIG. 8 is a schematic diagram of modules of a short message transmission device in an embodiment of the present invention;

Fig. 9 is a schematic flowchart of a short message transmission method on the UPF side in an embodiment of the present invention.

Detailed ways

The application will be further described in detail below in conjunction with the drawings and embodiments.

IP short message reception (that is, the mobile terminal reception (MT, Mobile Terminating) process) is initiated from the SMSC, and the process is processed by the IP-SM-GW and the IMS core network, and then forwarded to the user equipment (UE, User Equipment). as shown in picture 2:

1: After SMSC receives the short message, according to the number segment of the UE’s MSISDN,

The home location register (HLR, Home Location Register) sends the MAP_SEND_ROUTING_INFO_FOR_SM message to obtain the short message route.

2: The HLR judges that the UE has a registered or signed default IP-SM-GW, and sends a MAP_SEND_ROUTING_INFO_FOR_SM_ACK message to the SMSC to inform the IP-SM-GW global code (GT, Global Title) address information.

3: The SMSC sends MAP_MT_FORWARD_SHORT_MESSAGE_IND to the IP-SM-GW according to the GT address information of the IP-SM-GW carried in the MAP_SEND_ROUTING_INFO_FOR_SM_ACK message.

4: After receiving the MAP_MT_FORWARD_SHORT_MESSAGE_IND message, the IP-SM-GW executes the domain selection function and selects the IMS domain to issue.

5-7: The IP-SM-GW does the following processing: check the UE's short message service authority and the terminal's transport-level interworking (TLI, Transport-level Interworking) format reception capability. A MESSAGE message is constructed, and the short message is sent to the UE through a service-session control function entity (S-CSCF, Serving-Call Session Control Function).

8～10: The UE returns a 200 OK response to the IP-SM-GW.

11～13: The UE constructs RP-ACK or RP-ERROR as the response of the short message reception according to the short message reception, and is encoded in the MESSAGE message through the proxy-call session control function (P-CSCF, Proxy-Call Session Control Funtion) ) And S-CSCF return to IP-SM-GW. The IP-SM-GW obtains the RP-ACK or RP-ERROR from the MESSAGE message, constructs a MAP_MT_FORWARD_SHORT_MESSAGE_RSP message and returns it to the SMSC.

15-17: The IP-SM-GW returns a 200 OK response to the UE.

18-19: The HLR receives the REPORT-SM-DELIVERY-STATUS status report messages sent by the SMSC and the IP-SM-GW respectively, and completes the IP short message MT process.

VoLTE users in the current network and subsequent 5G users (large network users) will use IP short messages to develop short message services. As shown in Figure 3, the IP short message system architecture of the 5G network, the provision process of the IP short message service in the 5G network is basically the same as that in the LTE/VoLTE environment, except that the data will be transparently transmitted through the UPF when interacting with the UE. It is not transparently transmitted through the P-GW.

As shown in Figure 4, in the 5G redundant transmission solution, for 5G ultra-high reliability and ultra-low latency communication (URLLC, Ultra Reliable Low Latency Communication) business requirements, redundant transmission solutions are considered in the 5G system architecture design. In the original architecture, the data between the 5G radio access network (NG-RAN) and the UPF is transmitted through an N3 tunnel (Tunnel), and it is difficult for a single Tunnel to meet the reliability requirements. Therefore, in the scheme shown in Figure 4, the transmission between UPF and NG-RAN will construct two N3 Tunnels, and use redundant transmission to improve reliability. Here, both NG-RAN and UPF need to have the related functions of packet duplication and deduplication.

At this stage, when VoLTE users and 5G users use IP short messages to carry out short message services, the mechanism of IP short message transmission cannot guarantee high-priority short messages to achieve high-reliability transmission. The main manifestations are as follows:

Problem 1: High-priority short messages (such as AO verification codes) cannot be guaranteed to be delivered first in the IP short message network, and it is difficult to meet the requirements of high-reliability services.

As shown in Figure 5, an embodiment of the present invention provides a short message transmission method, which is applied to an IP short message gateway, and the method includes:

Step 51: Receive a short message sent by the SMSC, where the short message carries a short message priority identifier;

Step 52: Deliver the short message priority identifier through the IMS domain.

In this embodiment of the present invention, the short message sent by the SMSC is received through the IP-SM-GW. The short message may be the MT-Forward Short Message sent by the SMSC, that is, the mobile termination forward short message, and the short message carries the short message. Priority identifier; the short message priority identifier is delivered through the IMS domain. It can effectively distinguish high-priority IP short messages in the 5G environment, so as to realize the high-reliability transmission of high-priority IP short messages.

In an optional embodiment of the present invention, step 51 may include:

Step 511: Parse the short message to obtain the short message priority identifier;

Step 512: Encapsulate the short message priority identifier in a SIP message and deliver it through the IMS domain. Here, it can specifically be delivered through the S-CSCF of the IMS domain.

In an optional embodiment of the present invention, step 512 may include:

Step 5121: Encapsulate the short message priority identifier in the header field of the SIP message, and deliver it through the IMS domain.

In the above-mentioned embodiment of the present invention, sending through the IMS domain may include: sending through the IMS domain to the UPF at a designated preset port. Here, the preset port can also be encapsulated in the SIP message. The SIP message is encapsulated with the message body of the IP short message, the short message priority identifier, and the preset port. The preset port is the preset purpose of the IP short message. port.

As shown in Figure 6 and Figure 7, the specific business process of the above-mentioned embodiment of the present invention includes:

In the IP short message MT process, the SMSC first queries the IP-SM-GW address and forwards the message to the IP-SM-GW. The short message MT-Forward SM carries the SMS priority identifier or important short message identifier (mobility application MAP layer can be resolved).

After receiving the short message, the IP-SM-GW obtains the SMS priority identification or important short message identification information during MAP analysis, and delivers the IP short message through the IMS domain. At the same time, the SIP message carries the SMS priority identification or Important short message identifier (such as Feature Caps header field).

When the IP short message is routed to the UPF via the IMS domain, the UPF determines that it has received the SIP message encapsulating the high-priority IP short message according to the activated policy and charging control (PCC, Policy and Charging Control Rule-PCC Rule), so it detects and specifies The flow containing the preset port number (specific purpose port number) is replaced for the specific port number, specifically replaced with the default signaling flow SIP receiving port number on the UE side.

Here, UPF will pre-configure PCC rules for SIP message encapsulation of high-priority short messages. When the UE establishes an IP PDU session of the IMS DNN, the SMF will issue the PCC rule ID for the corresponding IP PDU session to activate the PCC rule on the UPF.

UPF also activates the corresponding reliability mechanism on the N3 interface, and uses redundant transmission to ensure the high-reliability transmission of IP short messages. The redundant transmission method here may be: the transmission of the IP short message includes at least two channels, and any one of them receives the IP short message, it is considered that the IP short message transmission is successful.

In Figure 7, the function of SMSC is to add a priority identifier to the MAP message for high-priority short messages; the function of PCF is to configure enhanced PCC rules and apply to high-reliability transmission of IP short messages; IP-SM -GW: Correctly handle the priority identifier in the MAP message forwarded by SMSC, and carry the corresponding identifier in the SIP Message, and specify a specific port number for delivery; the function of UPF is to implement enhanced PCC rules and distinguish high-priority IP short messages. And complete the port number replacement and the realization of the redundant transmission mechanism.

The foregoing embodiment of the present invention initiates enhanced PCC rules for the IP PDU session of the IMS DNN. In the enhanced PCC rules, SIP short messages that require high-reliability transmission of IP short messages will be distinguished from other IP short messages by a specific destination port number. Combined with the redundant transmission mechanism of the 5G network, high-reliability transmission of IP short messages is realized. At the same time, IP short message transmission (MT process) introduces short message priority or important short message identification to distinguish IP short messages that require high-reliability transmission, so as to achieve high-reliability transmission of high-priority IP short messages.

As shown in FIG. 8, corresponding to the method shown in FIG. 5, an embodiment of the present invention also provides a short message transmission device 80, which is applied to an IP short message gateway, and the device 80 includes:

The receiving module 81 is configured to receive a short message sent by the SMSC, and the short message carries a short message priority identifier;

The sending module 82 is configured to deliver the short message priority identifier through the IMS domain.

Optionally, the sending module 82 is configured to: parse the short message to obtain the short message priority identifier; encapsulate the short message priority identifier in a SIP message and deliver it through the IMS domain.

Optionally, the sending module 82 encapsulates the short message priority identifier in the header field of the SIP message, and delivers it through the IMS domain.

Optionally, the sending module 82 sends the SIP message encapsulated with the priority identifier of the short message to the UPF through the IMS domain on a designated preset port.

It should be noted that all the implementation manners in the foregoing method embodiments are applicable to the embodiments of the device, and the same technical effects can also be achieved.

As shown in FIG. 9, the embodiment of the present invention also provides a short message transmission method, which is applied to UPF, and the method includes:

Step 91: Receive a SIP message encapsulated with a short message priority identifier through the IMS domain;

Step 92: Send the SIP message encapsulated with the short message priority identifier to the terminal.

In an optional embodiment of the present invention, step 92 may include:

Step 921: Replace the preset port number in the SIP message with the default receiving port number of the terminal, and send the SIP message encapsulated with the short message priority identifier to the terminal.

In an optional embodiment of the present invention, step 921 may include:

Step 9211: Detect the flow with the preset port number according to the configured PCC rule;

Step 9212: Replace the preset port number in the stream with the default receiving port number of the terminal, and send the SIP message encapsulated with the short message priority identifier to the terminal using a redundant transmission mechanism.

In the above-mentioned embodiment of the present invention, the PCC rule is sent by the UPF through the session management function SMF after receiving the PCF configuration.

It should be noted that the method on the UPF side is the UPF corresponding to the method shown in Figures 5, 6 and 7 above. All the implementation methods in Figures 5, 6, and 7 above are applicable to this embodiment, and the same can be achieved. Technical effect.

Optionally, the sending module is configured to replace the preset port number in the SIP message with the default receiving port number of the terminal, and send the SIP message encapsulated with the short message priority identifier to the terminal.

Optionally, the sending module is configured to detect the flow with the preset port number according to the configured PCC rules; replace the preset port number in the flow with the default receiving port number of the terminal, and change all The SIP message encapsulated with the priority identifier of the short message is sent to the terminal using a redundant transmission mechanism.

Optionally, the receiving module is further configured to receive the PCC rules configured by the PCF and sent through SMF.

It should be noted that all the implementation manners in the method embodiment shown in FIG. 9 are applicable to the embodiment of the device, and the same technical effect can also be achieved.

An embodiment of the present invention also provides a communication device, which includes a processor and a memory storing a computer program, and the computer program executes the method described above when the computer program is run by the processor. When the communication device is an IP-SM-GW, the method shown in FIG. 5 is executed, and when the communication device is a UPF, the method shown in FIG. 9 is executed. All the implementation manners in the foregoing method embodiments are applicable to the device embodiments, and the same technical effects can also be achieved.

An embodiment of the present invention also provides a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute the method described in FIG. 5 or FIG. 9 above. All the implementation manners in the foregoing method embodiments are applicable to the device embodiments, and the same technical effects can also be achieved.

A person of ordinary skill in the art may realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the present invention.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the embodiments provided by the present invention, it should be understood that the disclosed device and method may be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in the various embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

In addition, it should be pointed out that in the device and method of the present invention, obviously, each component or each step can be decomposed and/or recombined. These decomposition and/or recombination should be regarded as equivalent solutions of the present invention. In addition, the steps of performing the above series of processing can naturally be performed in a chronological order in the order of description, but do not necessarily need to be performed in a chronological order, and some steps can be performed in parallel or independently of each other. A person of ordinary skill in the art can understand that all or any of the steps or components of the method and device of the present invention can be used in any computing device (including a processor, storage medium, etc.) or a network of computing devices with hardware and firmware. , Software, or a combination of them, this can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

Therefore, the purpose of the present invention can also be achieved by running a program or a group of programs on any computing device. The computing device may be a well-known general-purpose device. Therefore, the purpose of the present invention can also be achieved only by providing a program product containing program code for realizing the method or device. In other words, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. Obviously, the storage medium may be any well-known storage medium or any storage medium developed in the future. It should also be pointed out that in the device and method of the present invention, obviously, each component or each step can be decomposed and/or recombined. These decomposition and/or recombination should be regarded as equivalent solutions of the present invention. In addition, the steps of executing the above-mentioned series of processing can naturally be executed in chronological order in the order of description, but they do not necessarily need to be executed in chronological order. Some steps can be performed in parallel or independently of each other.

The above are the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also It should be regarded as the protection scope of the present invention.

Claims

A short message transmission method, applied to an IP short message gateway, the method includes:

Receiving a short message sent by a short message service center SMSC, the short message carrying a short message priority identifier;

The short message priority identifier is delivered through the IMS domain of the IP multimedia subsystem.
The short message transmission method according to claim 1, wherein the sending the short message priority identifier through the IMS domain comprises:

Parse the short message to obtain the short message priority identifier;

The short message priority identifier is encapsulated in a SIP message of the Session Initiation Protocol, and delivered through the IMS domain.
The short message transmission method according to claim 2, wherein encapsulating the short message priority identifier in a SIP message and sending it through the IMS domain comprises:

The short message priority identifier is encapsulated in the header field of the SIP message and delivered through the IMS field.
The short message transmission method according to any one of claims 1 to 3, wherein the sending through the IMS domain includes:

Through the IMS domain, it is delivered to the user plane function UPF at the designated preset port.
A short message transmission device, applied to an IP short message gateway, the device includes:

A receiving module, configured to receive a short message sent by the SMSC, the short message carrying a short message priority identifier;

The sending module is configured to deliver the short message priority identifier through the IMS domain.
The short message transmission device according to claim 5, wherein the sending module is configured to parse the short message to obtain the short message priority identifier; and encapsulate the short message priority identifier in a SIP message , Issued through the IMS domain.
The short message transmission device according to claim 6, wherein the sending module encapsulates the short message priority identifier in the header field of the SIP message, and delivers it through the IMS domain.
The short message transmission device according to any one of claims 5 to 7, wherein the sending module delivers the SIP message encapsulated with the short message priority identifier to the UPF through the IMS domain and on the designated preset port.
A short message transmission method, applied to UPF, and the method includes:

Receive SIP messages encapsulated with short message priority identifiers through the IMS domain;

The SIP message encapsulated with the short message priority identifier is sent to the terminal.
The short message transmission method according to claim 9, wherein the sending the SIP message encapsulated with the short message priority identifier to the terminal comprises:

The default receiving port number of the terminal is used to replace the preset port number in the SIP message, and the SIP message encapsulated with the short message priority identifier is sent to the terminal.
The method for transmitting short messages according to claim 10, wherein the default receiving port number of the terminal is used to replace the preset port number in the SIP message, and the SIP message encapsulated with the short message priority identifier is sent to Terminal, including:

Detect the flow with the preset port number according to the configured policy and charging control PCC rule;

The default receiving port number of the terminal is used to replace the preset port number in the stream, and the SIP message encapsulated with the short message priority identifier is sent to the terminal using a redundant transmission mechanism.
The short message transmission method according to claim 11, wherein the PCC is received by the UPF from the session management function SMF and configured by the policy control function PCF.
A short message transmission device, applied to UPF, and the device includes:

The receiving module is configured to receive the SIP message encapsulated with the priority identifier of the short message through the IMS domain;

The sending module is configured to send the SIP message encapsulated with the short message priority identifier to the terminal.
The short message transmission device according to claim 13, wherein the sending module is configured to replace the preset port number in the SIP message with the default receiving port number of the terminal, and encapsulate the priority of the short message The identified SIP message is sent to the terminal.
The short message transmission device according to claim 14, wherein the sending module is configured to detect the flow with the preset port number according to the configured PCC rule; replace the flow with the default receiving port number of the terminal The preset port number in, the SIP message encapsulated with the short message priority identifier is sent to the terminal using a redundant transmission mechanism.
The short message transmission device according to claim 15, wherein the receiving module is further configured to receive the PCC rules configured by the PCF and sent through the SMF.
A communication device includes a processor and a memory configured to store a computer program that can run on the processor,

Wherein, the processor is configured to execute the steps of the method according to any one of claims 1 to 4 or any one of claims 9 to 12 when computing the computer program.
A computer-readable storage medium that stores a computer program that, when executed by a processor, implements the steps of the method according to any one of claims 1 to 4 or any one of claims 9 to 12.