WO2011157132A2

WO2011157132A2 - Service information transmission method, device and system

Info

Publication number: WO2011157132A2
Application number: PCT/CN2011/075005
Authority: WO
Inventors: 陆伟; 银宇
Original assignee: 华为技术有限公司
Priority date: 2011-05-31
Filing date: 2011-05-31
Publication date: 2011-12-22
Also published as: CN102918876A; WO2011157132A3; CN102918876B

Abstract

Embodiments of the present invention provide a service information transmission method. The method includes: receiving a service notification message from a service platform; if a terminal is in an idle state, then, after the terminal is switched to a connection state, notifying said terminal to obtain service information or notifying said service platform to transmit the service information to said terminal. The Embodiments of the present invention also provide a service information transmission device and system, which avoid the transmitted service notification message from always triggering the procedure of paging the terminal, and reduce the signaling load in communication networks.

Description

Method, device and system for transmitting business information

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method, device and system for transmitting service information. Background technique

Push (PUSH) technology is a technology based on the client server mechanism. The server actively sends information to the client, which is a kind of sending technology. Compared with the traditional pull technology (PULL), the sending technology is characterized in that the service platform actively contacts the user when there is information update. The advantage is the timeliness of the information. By using the technology, the information can be sent to the data as soon as possible. In front of the user. At the same time, it avoids the message overhead caused by the client repeatedly querying the server when there is no information.

The sending technology is widely used in the network, and the user can subscribe to the application's update message through the terminal device. For example, in the Push-MAIL service, when a new E-MAIL of the terminal arrives on the mail server, the mail server will contact the terminal to send a new E-mail to the terminal, etc., and if the mobile phone reports the service, there may be a number in the city. Millions of users are subscribed to each user for a specified period of time.

In the current wave of mobile Internet characterized by Web2.0, in new applications such as social networking and microblogging, the sending technology can give greater advantages. When a new content is generated, the service platform actively sends the content to the terminal of interest. Users, thus avoiding a large number of users repeatedly querying whether there is a network storm caused by the update, and improving the operating efficiency of the network.

When the service needs to be sent, the service platform needs to contact the terminal through the identifier of the terminal. Usually, when the terminal registers with the service platform, the identity is registered in the service platform. For example, the IP address of the terminal is usually used in the IP network. Identification, and in the mobile communication network, the proprietary IMSI is used as the identity of the terminal.

In a fixed access network, since the terminal and the network always maintain a physical connection, When the service is to be sent, the service platform can contact the terminal at any time. For example, the IP address registered by the terminal is used as the destination address to send IP data packets to the terminal, and the terminal can be reached according to the routing mechanism of the IP network itself.

In the mobile communication network, in order to save radio resources and reduce power consumption of the terminal, when the terminal does not perform signaling interaction with the network and user plane data transmission for a period of time (such as several to several tens of seconds), the network can be placed on the network. The signaling connection between the network and the terminal and the radio bearer on the user plane, at this time, the terminal is said to be in an idle state (Idle State). The sending service on the mobile communication network side is a process of transmitting downlink data to the terminal, that is, a process in which the gateway device sends data to the terminal through other network side devices. In the prior art, when sending downlink data to a terminal, first, the network needs to contact the terminal in an idle state, and then the terminal needs to be paged first, and the terminal that receives the paging message restores the signaling connection with the network and the user plane. Bearer, the terminal is said to be connected

(Connected State), at which point the network sends signaling or cached service data to the terminal. After the service ends, if there is no signaling interaction or user plane data transmission for a period of time, the network will again turn the terminal to idle state.

Take the mobile phone as a typical business. For example, some popular mobile phone products may have millions of subscribers in a city. To send the latest mobile phone news to all subscriptions in the shortest possible time (for example, 30 minutes). The user's terminal means that the mobile communication network needs to page a large number of users in a short time, resulting in network congestion.

The service notification messages that trigger paging can be classified into two types according to the delay tolerance. One type needs to be delivered to the terminal as soon as possible, such as a voice call notification, a point-to-point short message, or a new email. The notification message is sent immediately; another type of service notification can be tolerated if the delay is delivered to the terminal for a period of time, such as a mobile phone report, a social portal or a microblog update notification, etc., such a service notification is called a delayed notification message. The boundaries between the two types of services are not strictly differentiated. For example, in some cases, text messages and emails may be tolerated for a short delay and then delivered to the terminal; while certain types of notifications for social portals or microblogs may need to be as soon as possible. Delivery terminal. In the prior art, the mobile communication network does not distinguish the difference between the instant transmission notification message and the delayable transmission notification message in the user delay tolerance. The service platform sends a service notification message, and if the message arrives in the mobile communication network, if the terminal is idle In the state, the network always pages the terminal immediately and delivers the message to the terminal, resulting in an increase in the network paging load when a large number of services such as mobile newspapers, social networking sites, and micro-blog information updates are performed. Summary of the invention

The embodiments of the present invention provide a method, a device, and a system for transmitting service information, which are used to solve the problem of large signaling overhead caused by frequent paging of an idle state and a delayable service in the prior art.

In one aspect, the embodiment of the present invention provides a method for sending service information, including: receiving a service notification message from a service platform;

If the terminal is in the idle state, after the terminal is in the connected state, the terminal is notified to obtain the service information or the service platform is notified to send the service information to the terminal.

In another aspect, the embodiment of the present invention further provides a service information sending apparatus, including: a receiving unit, configured to receive a service notification message from a service platform;

The first processing unit is configured to notify the terminal to obtain service information or notify the service platform to send service information to the terminal, after the terminal is in the idle state, to notify the terminal to obtain service information.

In another aspect, the embodiment of the present invention further provides a service information sending system, including: a service platform, a mobility management network element, and a terminal, where:

The service platform is configured to send a service notification message to the mobility management network element, where the mobility management network element is configured to receive a service notification message from the service platform, and if the terminal is currently in an idle state, After the terminal transits to the connection state, the terminal is notified to obtain service information or notify the service platform to send service information to the terminal;

The terminal is configured to acquire the service information according to the service notification message, or receive the The service information sent from the service platform.

The method, device and system for transmitting service information in the embodiment of the present invention provide a non-real-time transmission processing method for the service information, and buffer the service notification message and wait for the terminal to switch to the connected state, and then send the service notification to the terminal, thereby avoiding The service notification message always triggers the process of paging the terminal, reducing the signaling load in the communication network. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a flowchart of a first embodiment of a method for transmitting service information according to the present invention;

2 is a flowchart of a second embodiment of a method for transmitting service information according to the present invention;

3 is a flowchart of a third embodiment of a method for transmitting service information according to the present invention;

4 is a flowchart of a fourth embodiment of a method for transmitting service information according to the present invention;

FIG. 5 is a structural block diagram of an embodiment of a service information sending apparatus according to the present invention;

FIG. 6 is a structural diagram of an embodiment of a service information sending system provided by the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a flowchart of a first embodiment of a method for sending service information according to the present invention. As shown in FIG. 1, the method includes: 5101. Receive a service notification message from a service platform.

Here, the service platform is a logical entity that sends an application service notification message to the mobile communication network, and may be a service server, a transmission gateway, or a collection of the two. That is, when the service server directly connects to the mobile communication network, it refers to the service server. When the service server connects to the mobile communication network through the transmission gateway, it refers to the transmission gateway, or a collection of the two.

5102. If the terminal is in an idle state, after the terminal is in the connected state, notify the terminal to obtain service information or notify the service platform to send service information to the terminal.

The service notification message belongs to the delayable service notification message, and the service platform or the network device can set the maximum delay time of the service notification message. When the delayable service notification message needs to be sent to the terminal, if the terminal is in the idle state, the network The process of sending the service notification message is not immediately initiated, but the service notification message may be cached or marked on the network node that manages the terminal connection status, indicating that the service information needs to be sent to the terminal, and the terminal is triggered by other events. (For example, if the terminal wants to send data actively, or another service notification sent to the terminal triggers a service process such as a paging terminal), and the state changes from the idle state to the connected state, the network then delays the cached or marked service. The notification is sent to the terminal, and the sending process may be implemented through an established signaling connection or a user plane bearer.

And if the service notification message reaches the maximum delay time, the terminal is still in an idle state, and a paging process is initiated to the terminal, so that the terminal is switched to a connected state to receive a service notification.

After the terminal is switched to the connected state, the mobility management network element sends a service notification to the terminal. Business notifications contain some or all of the updated business information. Sending the service notification message to the terminal may forward the service notification message received from the service platform to the terminal (the mobility management network element may modify part of the message, or add some fields), or use a new message type ( For example, the service push notification, the present invention is not limited herein, and the field may be added to an existing message (for example, a tracking area update accept message), and the present invention is not limited.

In the embodiment of the present invention, the mobility management network element sends a service notification message or a new class to the terminal. The type of message may only contain an indication of new service information, or may include the service information itself to be updated, the segment or the relevant index of the service information on the service platform, etc., depending on the attributes of the updated service information, such as the length of the information, storage Depending on the mode, security requirements, etc., for example, if the service information is short, the service notification message directly carries the specific service information.

It should be noted that, in the embodiment of the present invention, the mobility management network element responsible for paging management in the mobile communication network manages the timing of sending the service notification message. The mobility management network element may be an MME in an EPS network, an SGSN in a GPRS/UMTS network, an ASN-GW in a WiMax network, and the like. The service platform can be directly connected to the mobility management network element, and the service notification message is sent to the mobility management network element.

In an actual network, a plurality of specific third-party services are usually connected, and multiple service servers are directly connected to the mobility management network element, and there are insufficient or hidden risks in security, charging, performance, and the like. Therefore, in the implementation of the present invention, A new logical network element can be introduced. The name of the logical network element is not limited. For convenience, it is called a general information sending gateway (referred to as a sending gateway). The service server of the third-party service is connected to the sending gateway. When the third-party application has new information to be sent to the terminal, the service notification message is first sent to the sending gateway, and the sending gateway connects with the mobility management network element to send the notification information. Give the mobility management network element. The sending gateway can also perform performance statistics, accounting, and other operations on the service notifications of the service server. The sending gateway is a logical entity that can be combined with a network element such as a service server or an HSS. When it is set up, the sending gateway can be regarded as a sending message processing module in the network element.

The method provided in this embodiment provides a non-real-time transmission scheme for the updated service data, caches the service notification message, and waits for the terminal to convert to the connected state, and then sends the service notification to the terminal, thereby avoiding the total service notification message sent. It is a process of triggering a paging terminal, which reduces the signaling load in the communication network.

2 is a flowchart of a second embodiment of a method for sending a service notification message according to the present invention. The terminal is attached to the network and is registered on the service platform. As shown in FIG. 2, the method includes: S201: When a service platform needs to send service data to a terminal, the service platform sends a service notification message to the mobility management network element. Among them, there are two main methods for the service platform to address the mobile management network element registered by the terminal:

1) The mobility management network element registered by the terminal is directly registered in the service platform, and the service platform saves the address of the mobility management network element registered by the current terminal in the corresponding terminal context;

2) The service platform queries the home subscriber database (HSS) for the mobility management network element currently registered by the terminal through the identifier of the saved terminal, such as IMSI and MSISDN.

Since the mobility management network element information registered by the terminal and the identification information such as IMSI and MSISDN belong to the network confidential information to some extent, the two methods are generally applied to setting a general information sending gateway, that is, the service server sends the gateway and the mobile through the general information. Sex management network element connection situation.

S202, after receiving the notification information, the mobility management network element determines the current state of the terminal, and if the terminal is currently in the connected state, directly sends the service notification message to the terminal; if the terminal is currently in the idle state, then the process proceeds to S203;

Specifically, the mobility management network element may send a service notification message to the terminal by using a control channel with the terminal, and the terminal may receive the notification message to contact the service platform to obtain further service information. If the user plane channel of the network and the terminal is available, the service notification message may also be sent to the terminal through the user plane channel of the terminal.

S203. The mobility management network element further determines a service notification message type. If the service notification message is delayed, the mobility management network element caches the service notification message in the established terminal context, and waits for the terminal to switch to the connected state, and then notifies the The terminal acquires service information or notifies the service platform to send service information to the terminal.

The mobility management network element may determine the service notification according to parameters (message type, specific field indication in the message, etc.) included in the service notification message from the service platform, or a rule configured by itself, or a combination of both, and may refer to other information. Whether the message is an instant notification message or a delayed notification message. The mobility management network element or the service platform may separately record the number of delayable notification messages and non-delayable notification messages, and may also record the number of messages according to the delayed time period for the delayable notification message, and the number of the classified service notifications is statistically calculated. The reporting fee center is used for charging according to the type of service notification and the length of the delay period. The service notification message sent by the service platform to the mobility management network element may include only the service information attribute, such as the maximum delay time, the index of the service information in the service platform, and the like, or may include the detailed content or fragment of the service information. The sending maximum delay time indicates that the service information can delay the maximum tolerable time sent to the terminal. The delay time can be expressed in absolute time, such as "18:00:00 on December 10, 2010", or relative time, such as "30 minutes later"; delay time 0 seconds (or no delay time field) It can be seen as a special case, that is, the service notification message needs to be immediately delivered to the terminal as an instant delivery service.

It should be noted that if the service notification message is an instant delivery type notification, the terminal is immediately paged, and subsequent processing is performed according to the existing process.

Specifically, when the notification message is delayed, the service platform may further specify a maximum delay time in the service notification message, or the mobility management network element determines the delay time according to the policy itself, and the meaning of the delay time is if the time is reached at the time. Previously, the terminal still did not switch to the connected state due to other reasons (for example, the terminal should actively send data, or other service services sent to the terminal trigger the paging terminal, etc.), then the mobility management network element needs to actively paging the terminal. The delayable service notification delivery terminal.

In the embodiment of the present invention, the mobility management network element is not an immediate paging terminal, but may set a service notification flag on the mobility management network element, where the identifier indicates that the service information needs to be sent to the terminal. The mobility management network element may also store other service-related information obtained from the service notification message, such as part or all of the service information, an index of the service information on the service platform, and the like. In addition, the mobility management network element may also send an acknowledgement message to the service platform to notify the service platform that the service delivery notification message has been received, but is in a state in which the terminal is switched to the connected state.

The reason why the terminal is switched to the connected state may include: the terminal needs to actively send data, or another service notification sent to the terminal triggers the paging terminal; or the cached current service notification has a maximum delay The mobility management network element has expired (or is about to expire) to actively page the terminal.

The mobility management network element may send the service notification message to the terminal in two ways:

1) After the terminal is switched to the connected state, the mobility management network element sends a service notification to the terminal. Business notifications contain some or all of the updated business information. Sending a service notification message to the terminal can use a new message, or add a field to an existing message (such as a tracking area update accept message), or use a new message type (such as a service push notification, Service Pushing Notification) The invention is not limited.

If necessary, the terminal can actively contact the service platform to obtain further information after receiving the notification. The address of the service platform may be obtained in advance when the terminal establishes a data connection, or the mobility management network element may carry the address of the service platform in the push notification message. The address of the service platform may be an IP address or a domain name, and the terminal accesses the service platform to retrieve and obtain related business information.

2) After the terminal is switched to the connected state, the mobility management network element notifies the service platform, and the service platform sends a service notification message to the terminal, and sends the service information to the terminal. If necessary, the terminal can actively contact the service platform to obtain detailed information after receiving the service notification message of the service platform. Since the terminal is still in the connected state at this time, the paging terminal is not needed.

In the above embodiment, the terminal needs to be attached to the network and establish a data channel (PDN).

Connection), in the process of establishing the attach process or the service channel, the terminal registers with the service platform, for example, the service platform saves information such as the IMSI, MSISDN or IP address of the terminal. If the service platform is directly connected to the mobility management network element, the mobility management network element registers its own address information into the service platform.

The service platform may also send a message data packet to the IP address of the terminal to send a service notification message to the mobility management network element.

In the EPS architecture, if the service platform needs to send service information through the user plane bearer notification, you can refer to the following steps:

The service platform sends a data packet including a service notification message to the terminal IP; The packet is sent over the established user plane bearer. The data packet may include, but is not limited to, a transmission delay time, service information, and the like;

After the service gateway device receives the data packet, if the current terminal is in an idle state (that is, the downlink tunnel information saved on the serving gateway is invalid), the serving gateway buffers and parses the data packet, and sends a downlink data notification message to the mobility management network element. The message may include, but is not limited to, a transmission delay time, application information, and the like. Specifically, if in the UMTS architecture, the mobility management network has both the user plane and the control plane function, for example, after receiving the user plane data packet of the service platform, the gateway device sends the data packet to the mobility management network. Element (SGSN), the SGSN can directly parse the user plane data packet. If the terminal is currently in an idle state, and the message data packet contains application information and transmission delay time, the SGSN can buffer the message and page the terminal according to the delay time. .

FIG. 3 is a flowchart of a third embodiment of a method for sending a service notification message according to the present invention, which is applied to a scenario in which a tracking area update of a mobility management network element changes. Including the following steps:

5301. The terminal moves to a new cell, and initiates a tracking area update process to the target side mobility management network element.

It should be noted that, before the step, the source mobility management network element receives the service notification message sent by the service platform, and learns that the service notification message is a deferrable service notification message, and the terminal is in an idle state, and the service notification message is cached; Or set a service notification tag to indicate that a service needs to be sent.

5302. The target-side mobility management network element sends a context request (Context Request) message to the source mobility management network element.

5303. Receive a context request message, where the source mobility management network element sends the context of the terminal. The target mobility network element; the service notification message or the service notification flag, which may be carried in the context response message;

S304. The target side mobility management network element sends a service notification message to the terminal.

Specifically, the message may be sent through a signaling connection with the terminal, and the message may use a new message, or may add a field in an existing message (such as a tracking area update accept message), or use a new message type ( For example, Service Push Notification, the present invention is not limited.

FIG. 4 is a flowchart of a fourth embodiment of a method for sending a service notification message according to the present invention. The difference from the third embodiment is that the target mobility network element does not need to obtain the service notification flag cached by the source mobility management network element. Specifically, the following steps are included:

S401. The terminal initiates a mobility management process; a process (tracking area update or routing area update process);

S402. The target mobility management network element registers with the service platform.

The registration information may include, but is not limited to, a target-side mobility management network element identifier, and the identifier of the terminal, such as IMSI, MSISDN, and the like;

S403. After receiving the registration of the target mobility management network element, the service platform deletes the source mobility management network element as the registration of the terminal.

At this time, if the service platform has the service information sent to the terminal, the service platform may send the service transmission notification to the target mobility management network element, and the specific processing manner is as described above.

S404. The service platform sends a service notification message to the terminal by using the target mobility management network element. After obtaining the service notification message sent by the service platform, the target mobility management network element may determine the type of the service notification message, and the status of the terminal, and buffer the service notification message, and delay sending the message to the terminal.

It should be noted that, in this embodiment and the third embodiment, after the terminal receives the service notification message, when the service notification message includes the specific service information, the terminal may directly obtain the service information; When the known message does not contain specific service information, the terminal can obtain service information from the service platform. The method provided in this embodiment avoids the process that the sent service notification message always triggers the paging terminal, and reduces the signaling load in the communication network.

FIG. 5 is a block diagram of an apparatus for sending a service notification message according to the present invention, including: a receiving unit 501, configured to receive a service information notification message from a service platform; a first processing unit 502, configured to: when the terminal is in an idle state, and When the service notification message information is a delayable service notification message, after the terminal switches to the connected state, the terminal is notified to obtain service information or notify the service platform to send service information to the terminal.

Optionally, the device may further include: a delay setting unit, configured to set a maximum delay time for sending; a second processing unit, configured to: after receiving the service notification message and reaching a maximum delay time of the sending, if When the terminal is still in an idle state, a paging process is initiated to the terminal, and the terminal is turned into a connected state.

Optionally, the device further includes: a tag setting unit, configured to: after receiving the service notification message from the service platform, set a service notification flag, where the service information is marked to be sent to the terminal.

Optionally, the device further includes: a label delivery unit, configured to: when the terminal moves, transmit the label to a target mobility management network element, where the service is performed by the target mobility management network element Information is sent to the terminal.

Optionally, the first processing unit includes: a sending unit, configured to send the service notification message by using a signaling connection with the terminal; or, by indicating a recovery bearer, sending the service notification message by using a user plane bearer .

The service notification message sending apparatus provided by the embodiment of the present invention may be that the mobility management network element may be an MME in an EPS network, an SGSN in a GPRS/UMTS network, an ASN-GW in a WiMax network, or the like. It is avoided that the transmitted service notification message always triggers the process of paging the terminal, reducing the signaling load in the communication network.

FIG. 6 is a schematic diagram of a network of a communication system according to an embodiment of the present invention. As shown in FIG. 6, the embodiment of the present invention is shown in FIG. The sending system includes: a service platform 601, a mobility management network element 602, and a terminal 603. The service platform 601 is configured to send a service notification message to the mobility management network element 602. The mobility management network element 602 is configured to receive a service notification message from the service platform 601. If the terminal is currently in an idle state, the terminal is to be switched. After the connection state is received, the terminal is notified to obtain service information or notify the service platform to send service information to the terminal;

The terminal 603 is configured to acquire the service information according to the service notification message, or receive the service information sent by the service platform.

The service platform 601 may be a service server directly connected to the mobility management network element 602, or one or more service servers may be connected to the mobility management network element 602 through a universal information sending gateway.

When the service platform 601 has new information to be sent to the terminal 603, the notification message is sent to the mobility management network element 602. After receiving the notification message, the mobility management network element 602 receives the notification message according to the status of the terminal 603 at the time, and the service notification message. The category is determined to be immediately sent to the terminal 603, or delayed and waited for the terminal 603 to switch to the connected state and then sent to the terminal 603.

The method of interaction between the above various devices can refer to the previous method embodiments. The communication system provided by the embodiment of the present invention avoids the process that the transmitted service notification message always triggers the paging terminal, and reduces the signaling load in the communication network.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: Modify the technical solutions described in the foregoing embodiments, or Equivalent replacement of some of the technical features of the embodiments of the present invention is not limited to the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

A method for notifying a service information, the method comprising:

Receiving service notification messages from the service platform;

If the terminal is in the idle state, after the terminal is in the connected state, the terminal is notified to obtain service information or notify the service platform to send service information to the terminal.

2. The method according to claim 1, wherein the notifying the terminal to obtain the service information comprises:

Notifying the terminal to obtain service information by using a new message or the service notification message; or informing the terminal to obtain service information from the service platform.

3. The method according to claim 2, wherein the new message or service notification message comprises:

The index of the service information on the service platform, or the fragment content of the service information, or the entire content of the business information.

4. The method according to claim 1, wherein the service notification message is a delayable notification message.

The method according to any one of claims 1 to 4, wherein the method further comprises:

Set the maximum delay time for the service notification message;

After receiving the service notification message and reaching the maximum delay time, if the terminal is still in an idle state, a paging procedure is initiated to the terminal.

The method according to claim 1, wherein the method further comprises: recording the number of delayable notification messages and non-delayable notification messages, or separately counting the number of notification messages of each time period according to the delayable time. Billing.

The method according to claim 1, wherein, after receiving the service notification message from the service platform, if the terminal is in an idle state, the method further includes:

The mobility management network element sets a service notification flag, and is used to mark the service information to be sent to the Terminal

Or

The serving gateway device buffers the service notification message data packet and notifies the mobility management network element of the service notification message.

The method according to claim 7, wherein after the setting of the service notification flag, the method further comprises:

When the mobility management network element registered by the terminal changes, the tag is delivered to the target mobility management network element.

The method according to claim 1, wherein the sending the service notification to the terminal comprises:

The mobility management network element sends the service notification by using a signaling connection with the terminal; or

The mobility management network element indicates that the user plane bearer is restored, and the service plane bearer is used to send the service notification.

The method according to claim 1, wherein before receiving the service notification message from the service platform, the method further includes:

When the terminal is attached, or the terminal establishes a data connection, or a location update process, the mobility management network element registered by the terminal registers with the service platform.

A device for transmitting service information, characterized in that the device comprises:

a receiving unit, configured to receive a service notification message from a service platform;

The device according to claim 11, wherein the device further comprises: a delay setting unit, configured to set a maximum delay time of the service notification;

a second processing unit, configured to: when the received service notification message reaches the maximum delay If the terminal is still in an idle state, a paging procedure is initiated to the terminal.

The device according to claim 11, wherein the device further comprises: a tag setting unit, configured to: after receiving the service notification message from the service platform, set a service notification flag, configured to mark the service information Need to be sent to the terminal.

The device according to claim 13, wherein the device further comprises: a tag transfer unit, configured to: when the mobility management network element registered by the terminal changes, transmit the tag to target mobility Manage network elements.

15. The apparatus according to claim 11, wherein the first processing unit comprises:

And a sending unit, configured to send the service notification by using a signaling connection with the terminal; or, to indicate that the user plane bearer is restored, and send the service notification by using a user plane bearer.

A system for transmitting service information, the system comprising: a service platform, a mobility management network element, and a terminal, where:

The terminal is configured to obtain the service information according to the service notification message, or receive the service information sent by the service platform.