WO2012100717A1

WO2012100717A1 - Method, system and network element for initiating active paging

Info

Publication number: WO2012100717A1
Application number: PCT/CN2012/070608
Authority: WO
Inventors: 王胡成
Original assignee: 大唐移动通信设备有限公司
Priority date: 2011-01-26
Filing date: 2012-01-19
Publication date: 2012-08-02
Also published as: CN102036377B; CN102036377A

Abstract

Provided are a method, system and network element for initiating active paging, belonging to the field of communications. The method includes: a first network element receives a downlink data notification message sent by a serving gateway (SGW), with the downlink data notification message containing a bearer identifier, and determines whether the bearer identifier exists in the bearer context stored in the first network element; if the bearer identifier does not so exist, said network element sends a no available bearer error information corresponding to the bearer identifier to the SGW so as to prompt the SGW to send a no available bearer notification to a public data network gateway (PDN GW), said notification being used to make the PDN GW stop sending downlink data to the serving gateway through the bearer and to release the resources of the bearer; and if the bearer identifier does so exist, then said network element initiates paging. In the present invention, the MME/SGSN reports the bearer absence to the serving gateway when paging has failed due to asynchronous bearer context, and the PDN GW is stopped from sending downlink data to the SGW, so as to save network resources.

Description

Method, system and network element for initiating active paging The present application claims to be submitted to the Chinese Patent Office on January 26, 2011, application number 201110028881.4, and the invention name is "a method for initiating active paging. The priority of the Chinese patent application, the system and the network element, the entire contents of which are hereby incorporated by reference. Technical field

The present invention relates to the field of communications, and in particular, to a method, system, and network element for initiating active paging.

Background technique

In the existing 3GPP (3rd Generation Partnership Project) protocol, EPS (Evolved Packet System) uses a new core network architecture. Referring to FIG. 1, the new core access network) and the E-UTRAN (Evolved Universal Telecommunication Radio Access Network) access network, UTRAN and E-UTRAN respectively correspond to user mobility The SGSN (Serving General Packet Radio Service Support Node) and the MME (Mobility Management Entity) are co-existing. When the UE (User Equipment) accesses the UTRAN or E-UTRAN, the UTRAN or E-UTRAN will select an SGSN or MME for the UE, and the SGSN or MME selects an SGW (Serving Gateway) for the UE and PDN GW (Public Data Networks Gateway, Public Data Network Gateway).

The IP bearer is a logical aggregation of one or more SDFs (Service Data Flows) between the UE and the PDN GW. In the communication network, in order to save network resources, the UE usually does not establish a bearer with the gateway in an idle state. When the UE is used, the bearer is established. There are two ways to establish a bearer. One of the methods is that the UE actively sends a connection request to the SGW, for example, a process in which the user dials the call. Another method is that the SGW actively pages the UE, for example, the called process of the user's mobile phone, and the SGW initiates paging by actively triggering the MME/SGSN. This paging establishment process is called Paging.

The SGW actively triggers the MME/SGSN to perform active paging. The SGW performs active paging in the existing 3GPP protocol mechanism. After receiving the downlink data Downlink Data sent by the PDN GW through a certain bearer, the SGW sends the MME/ The SGSN sends a Downlink Data Notification message to notify the MME/SGSN that there is downlink data on the bearer. After receiving the Downlink Data Notification, the MME/SGSN initiates paging.

However, the inventors have found that the above prior art has at least the following disadvantages:

In the prior art, in the process of initiating paging, the bearer context is not synchronized, and the bearer in the MME/SGSN may be deleted, but the bearer still exists between the PDN GW and the MME/SGSN, in the MME/SGSN. Roger that After the Downlink Data Notification, the device fails to be discovered, and the paging fails. The PDN GW will continue to send downlink data to the SGW before receiving the response to create a successful paging. This will consume network resources and waste bandwidth.

Summary of the invention

The present invention provides a method, a system, and a network element for initiating active paging, so as to stop the PDN GW from transmitting downlink data to the SGW when the MME/SGSN fails to initiate paging in the bearer context. Save network resources.

The technical solution is as follows:

The present invention provides a method for initiating active paging, the method comprising:

Receiving, by the first network element, a downlink data notification message sent by the serving gateway, where the downlink data notification message includes a bearer identifier;

Determining whether the bearer identifier exists in the bearer context stored by the host;

And if not, sending, to the serving gateway, error information that the bearer corresponding to the bearer identifier does not exist, where the serving gateway sends a notification that the bearer does not exist to the public data network gateway, where the bearer does not exist. The notification is used to stop the public data network gateway from sending downlink data to the serving gateway through the bearer, and release the resource of the bearer; if yes, initiate paging.

Further, the sending, by the service gateway, the error information that the bearer corresponding to the bearer identifier does not exist, specifically includes:

The error information that the bearer identifier does not exist is added to the downlink data notification response message, and the downlink data notification response message is sent to the service gateway.

Further, before the public data network gateway stops sending downlink data to the serving gateway by using the bearer, the method further includes:

Determining, by the serving gateway, whether the idle state signaling reduction ISR is activated;

Sending, to the public data network gateway, a notification that the bearer does not exist if the ISR is not activated;

If the ISR is activated, it is determined whether the error information of the paging failure sent by the second network element is received, and if the error information of the paging failure sent by the second network element is received, the public data network is sent to the public data network. The gateway sends a notification that the bearer does not exist to cause the public data network gateway to stop sending downlink data to the serving gateway through the bearer.

Further, before the determining whether the error information of the bearer identifier corresponding to the bearer identifier sent by the second network element is not received, the method further includes:

Receiving, by the second network element, the downlink data notification message sent by the serving gateway, where the downlink data notification message includes the bearer identifier;

Determining, by the second network element, whether the bearer identifier exists in a bearer context stored by the second network element;

If not, sending an error message of paging failure to the serving gateway; If it does, initiate a page.

Further, the first network element is a general packet radio service support node SGSN, and the second network element is a mobility management entity MME; or

The first network element is a mobility management entity MME, and the second network element is a general packet radio service support node SGSN.

Further, after the public data network gateway stops sending downlink data to the serving gateway by using the bearer, the method further includes:

The serving gateway sends a message requesting deletion of the bearer to the public data network gateway.

A system for initiating active paging, the system comprising a first network element and a serving gateway;

The first network element includes:

a first receiving module, configured to receive a downlink data notification message sent by the serving gateway, where the downlink data notification message includes an identifier;

a first determining module, configured to determine whether the bearer identifier exists in a bearer context stored by the first network element itself;

a first processing module, configured to: when the judgment result of the first determining module is that the bearer identifier does not exist, send, to the service gateway, error information that the bearer corresponding to the bearer identifier does not exist;

a second processing module, configured to: when the first judgment module determines that the bearer corresponding to the bearer identifier exists, initiate a paging;

The service gateway specifically includes:

a stopping module, configured to: after receiving the error information that the bearer identifier corresponding to the bearer identifier sent by the first processing module does not exist, send a notification that the bearer does not exist to the public data network gateway, where the bearer does not exist The notification is configured to stop the public data network gateway from sending downlink data to the serving gateway by using the bearer, and release the resource of the bearer.

Further, the first processing module specifically includes:

The error adding unit is configured to: when the first judgment module determines that the first network element does not have the bearer identifier, add the error information that the bearer identifier does not exist to the downlink data notification. In the response message, the error sending unit is configured to send, to the serving gateway, a downlink data notification response message, after the joining unit adds the error information that the bearer corresponding to the bearer identifier does not exist to the downlink data notification response message.

Further, the service gateway further includes:

a second determining module, configured to determine, after the stopping module sends the public data network gateway to stop sending downlink data to the serving gateway by using the bearer, whether the idle state signaling reduction ISR is activated, if the ISR is not The third module is configured to notify the public data network gateway to stop sending downlink data to the serving gateway by using the bearer, and the third determining module is configured to: when the second determining module determines that the ISR is activated, , to determine whether the second network is received The error information of the paging failure sent by the network element, if receiving the error information of the paging failure sent by the second network element, notifying the stopping module to stop the public data network gateway from passing through the bearer The serving gateway sends downlink data.

Further, the system further includes a second network element, where the second network element specifically includes:

The second receiving module is configured to: before the third determining module determines whether the error information that the bearer identifier corresponding to the bearer identifier sent by the second network element is not received, the receiving the downlink information notification message is sent by the serving gateway, The downlink data notification message includes an identifier;

a fourth determining module, configured to determine whether the bearer identifier exists in a bearer context stored by the second network element itself;

a third processing module, configured to send a paging failure error to the third determining module when the fourth determining module determines that the bearer identifier is not included in the bearer context stored by the second network element Information

The fourth processing module is configured to initiate paging when the fourth determining module determines that the bearer identifier exists in a bearer context stored by the second network element.

Further, the service gateway further includes:

And a deleting module, configured to send, to the public data network gateway, a message requesting to delete the bearer after the stopping module stops the public data network gateway from sending downlink data to the serving gateway by using the bearer.

A network network element, where the network network element includes:

a receiving module, configured to receive a downlink data notification message sent by the serving gateway, where the downlink data notification message includes a bearer identifier;

a determining module, configured to determine whether the bearer identifier exists in a bearer context stored by itself;

An error processing module, configured to: when the determining module determines that the bearer identifier does not exist, send, to the serving gateway, error information that the bearer corresponding to the bearer identifier does not exist, where the serving gateway sends the public data to the public data. The network gateway sends a notification that the bearer does not exist, and the notification that the bearer does not exist is used to stop the public data network gateway from sending downlink data to the serving gateway by using the bearer, and releasing the bearer resource;

The paging module is configured to initiate paging when the determining module determines that the bearer identifier exists by itself.

Further, the error processing module specifically includes:

The error adding unit is configured to: when the determining result of the determining module is that the bearer identifier does not exist, add the error information that the bearer identifier does not exist to the downlink data notification response message; The error sending unit is configured to send, to the serving gateway, a downlink data notification response message after the error adding unit adds the error information that the bearer corresponding to the bearer identifier does not exist to the downlink data notification response message.

The technical solution provided by the embodiment of the present invention has the following beneficial effects: a method, a system, and a network element for initiating active paging, which may be used when the MME/SGSN fails to initiate paging in the bearer context. The gateway reports that the bearer does not exist, and stops the PDN GW from sending downlink data to the SGW to save network resources.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. It is obvious that the following figures are merely some embodiments of the present invention, which are common to the art. For the skilled person, other drawings can be obtained from these drawings without any creative work.

1 is a structural diagram of a new core network in an EPS provided in the background art of the present invention;

2 is a flowchart of a method for initiating active paging according to Embodiment 1 of the present invention;

3 is a flowchart of a method for initiating active paging according to Embodiment 2 of the present invention;

4 is a schematic structural diagram of a system for initiating active paging according to Embodiment 3 of the present invention;

FIG. 5 is a schematic structural diagram of a first processing module in a system for initiating active paging according to Embodiment 3 of the present invention; FIG.

FIG. 6 is a schematic diagram of a second structure of a system for initiating active paging according to Embodiment 3 of the present invention; FIG. 7 is a schematic diagram of a system for initiating active paging according to Embodiment 3 of the present invention; FIG. 8 is a schematic diagram of a fourth structure of a system for initiating active paging according to Embodiment 3 of the present invention; FIG. 9 is a network element provided by Embodiment 4 of the present invention; Schematic diagram of the structure;

FIG. 10 is a schematic structural diagram of an error processing module in a network element according to Embodiment 4 of the present invention. detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Example 1

The embodiment of the present invention provides a method for initiating active paging. The process is as shown in FIG. 2, including: Step 101: The first network element receives the downlink data notification message sent by the serving gateway, and the downlink data notification message Included in the R logo;

Step 102: Determine whether the bearer identifier exists in the bearer context stored by itself, and if not, perform the step.

103, if yes, go to step 104;

Step 103: Send, to the serving gateway, error information that the bearer corresponding to the bearer identifier does not exist, and is used to enable the serving gateway. Notifying the public data network gateway that the bearer does not exist, and the notification that the bearer does not exist is used to stop the public data network gateway from sending downlink data to the serving gateway and releasing the bearer resources by using the bearer;

Step 104: Initiate paging.

The embodiment of the present invention provides a method for initiating active paging. When the paging failure occurs due to the MME/SGSN being out of synchronization, the MME/SGSN may report that the bearer does not exist to the serving gateway, and stop the PDN GW from sending to the SGW. Downstream data to save network resources.

Example 2

Embodiment 2 of the present invention proposes a method for initiating active paging, which is improved on the basis of Embodiment 1, and the process thereof is as shown in FIG. 3, including:

In this embodiment, the UE that is configured to activate the ISR in the serving gateway SGW may establish a bearer with the first network element or the second network element, and the first network element is the MME, and the second network element is the second network element. The SGSN is described as an example.

Step 201: The PDN GW sends downlink data Downlink Data to the SGW by using a bearer;

It should be noted that, when the PDN GW sends the downlink data Downlink Data to the SGW, the bearer is obtained by the PDN GW through the mapping, and the mapping allocation process is a prior art, and details are not described herein again.

Step 202: The SGW sends a downlink data notification message to the MME and the SGSN, Downlink Data Notification;

It should be noted that the downlink data notification message Downlink Data Notification carries the bearer identifier EPS Bearer ID of the bearer, and is used to indicate to the MME and the SGSN that downlink data Downlink Data exists on the bearer.

The bearer corresponding to the bearer identifier EPS Bearer ID is the same as the following embodiments.

Step 203: The MME determines whether the EPS Bearer ID exists in the bearer context stored by itself, and if not, executes step 204, and if yes, performs step 209.

It should be noted that the MME determines whether the bearer corresponding to the EPS Bearer ID exists by determining whether the EPS bearer ID exists in the bearer context stored by itself.

Step 204: The MME adds the error information that the bearer does not exist to the downlink data notification response message Downlink Data Notification Acknowledge, and sends the downlink data notification response message Downlink Data Notification Acknowledge that is not the error information of the bearer to the SGW;

Adding the error information that the bearer does not exist to the downlink data notification response message includes:

In the downlink data notification response message Downlink Data Notification Acknowledge, a new cause value cause is added, and the error information that the bearer does not exist is set to Bearer not found, and the Bearer not found is included as the new cause value in the downlink data notification response message Downlink Data. The Notification Acknowledge is sent to the SGW.

In this embodiment, after the MME determines that the bearer identifier does not exist, the MME fails to initiate the paging, and returns an error message of the Bearer not found, which is beneficial to the network to deal with the actual communication situation and save network resources, where the MME When the SGW returns a notification message that does not exist, the notification message should include the identifier of the bearer. Step 205: After receiving the downlink data notification response message Downlink Data Notification Acknowledge, the SGW determines whether the idle state signaling reduction ISR is activated. If it is activated, step 206 is performed. If not, step 207 is performed; In the core network architecture, the universal terrestrial radio access network/global mobile communication system/global mobile communication system evolved enhanced data rate radio access network (UTRAN/GERAN) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN) The user mobility control management entity, ie, the serving general packet radio service node SGSN and the mobility management entity MME, respectively, of the two access systems coexist. In order to adapt to the user mobility management under the new core network architecture, an idle state signaling optimization (ISR) technique is proposed in the evolved packet system, which can reduce the idle state of the UE camping on UTRAN/GERAN and E-TURAN. The amount of signaling for the mobility management process when the boundary areas of the two systems are accessed. When the UE does not activate the ISR function, only one user mobility management control entity serves the UE.

Step 206: The SGW determines whether an error message of paging failure sent by the SGSN is received, and if yes, step 207 is performed, and if no, step 209 is performed.

In this embodiment, the SGW determines whether the error message of the paging failure sent by the SGSN is: The SGSN determines whether the bearer identifier exists in the bearer context stored by the SGSN, and if yes, initiates paging, if not, Then, the paging failure is established, and the error message of the paging failure is returned to the SGW. The method for determining whether the bearer exists by the SGSN is the same as the method for determining whether the bearer exists by the MME, and details are not described herein again.

Step 207: The SGW reports to the PDN GW that the bearer does not exist, and causes the PDN GW to stop sending downlink data Downlink Data to the SGW through the bearer, and release the bearer resources.

Step 208: The PDN GW deletes the foregoing bearer.

After the step 208, before the step 208, the method further includes: the SGW sending a message to the PDN GW requesting to delete the bearer.

The process of deleting the foregoing bearer by the PDN GW is a prior art, and details are not described herein again.

Step 209: Initiate paging.

The subsequent paging process is prior art and will not be described here.

It should be noted that, in the existing 3GPP protocol, the MME/SGSN may not delete the corresponding bearer request (Delete Bearer Request) message sent by the SGW due to over load. The bearer, but waiting for a long time, will process the message, and the SGW may have retransmitted the message multiple times, waiting for the MME/SGSN to complete the deletion and return the Delete Bearer Response message to the SGW. The SGW may have considered that the deletion has failed. The bearer remains on the SGW. As a result, the bearer context on the MME/SGSN and the SGW is not synchronized. The PDN GW cannot obtain the deleted message. In this case, the bearer is Invalid, but because the PDN GW does not know the message and does not issue a command to delete the bearer, resulting in waste of resources in the network. The method for indicating the paging failure by the serving gateway proposed by the present invention can notify the PDN GW that the paging fails. And delete the bearer, save network resources Source.

After the foregoing bearer is deleted in this step, the process of re-establishing the bearer according to the prior art may also be included in the PDN GW. In this embodiment, the first network element is the MME, and the second network element is the SGSN. For example, the first network element is the SGSN, and the second network element is the MME. .

The embodiment of the present invention provides a method for initiating active paging. When the MME/SGSN fails to initiate paging, the MME/SGSN reports that the bearer does not exist to the serving gateway, and stops the PDN GW to the SGW. Send downlink data to save network resources.

Example 3

Embodiment 3 of the present invention proposes a system for initiating active paging, the structure of which is shown in FIG. 4, the system includes a first network element 1 and a monthly service gateway 2;

The first network element 1 includes:

The first receiving module 101 is configured to receive a downlink data notification message sent by the serving gateway 2, where the downlink data notification message includes an identifier;

The first judging module 102 is configured to determine whether the bearer identifier exists in the bearer context stored by the first network element 1; the first processing module 103 is configured to: when the judgment result of the first judging module 102 is that the bearer identifier does not exist Sending, to the serving gateway 2, error information that the bearer corresponding to the bearer identifier does not exist;

The second processing module 104 is configured to: when the first judgment module 102 determines that the bearer corresponding to the bearer identifier exists, initiate paging;

The service gateway has two bodies:

The stopping module 201 is configured to: after receiving the error information that the bearer identifier corresponding to the bearer identifier sent by the first processing module 103 does not exist, send a notification that the bearer does not exist to the public data network gateway, and the notification that the bearer does not exist is used for The public data network gateway stops transmitting downlink data to the serving gateway through the foregoing bearer and releases the resources of the bearer.

Further, as shown in FIG. 5, the first processing module 103 specifically includes:

The adding unit 1031 is configured to: when the judgment result of the first determining module is that the bearer identifier does not exist, add the error information that the bearer corresponding to the bearer identifier does not exist to the downlink data notification response message;

The error sending unit 1032 is configured to send, to the serving gateway 2, a downlink data notification response message, after the adding unit 1031 adds the error information that the bearer corresponding to the bearer identifier does not exist to the downlink data notification response message.

Further, as shown in FIG. 6, the service gateway 2 further includes:

The second judging module 202 is configured to determine whether the idle state signaling reduction ISR is activated before the stopping module 201 causes the public data network gateway to stop sending the downlink data to the serving gateway 2 by using the bearer, and if the ISR is not activated, notify the stopping module. 201, causing the public data network gateway to stop sending downlink data to the serving gateway 2 through the foregoing bearer;

The third determining module 203 is configured to determine, when the second determining module 202 determines that the ISR is activated, whether the second network is received. If the error message of the paging failure sent by the network element is received, if the error message of the paging failure sent by the second network element is received, the stopping module 2 is notified to stop the public data network gateway from transmitting the downlink data to the serving gateway 2 through the bearer.

Correspondingly, as shown in FIG. 7, the system further includes a second network element 3, and the second network element 3 specifically includes: a second receiving module 301, configured to determine, by the third determining module 203, whether the second network is received. The receiving service gateway 2 sends a downlink data notification message, and the downlink data notification message includes a payload identifier, before the error information corresponding to the bearer identifier sent by the network element 3 is not present.

The fourth determining module 302 is configured to determine whether the bearer identifier exists in the bearer context stored by the second network element 3 itself;

The third processing module 303 is configured to: when the fourth determining module 302 determines that the bearer identifier is not included in the bearer context stored by the second network element 3, send the paging failure error information to the third determining module 203;

The fourth processing module 304 is configured to initiate paging when the fourth determining module 302 determines that the bearer identifier exists in the bearer context stored by the second network element 3 itself.

Further, the first network element 1 is a general packet radio service support node SGSN, and the second network element 2 is a mobility management entity MME; or

The first network element 1 is a mobility management entity MME, and the second network element 2 is a general packet radio service support node.

SGSN.

Further, as shown in FIG. 8, the service gateway 2 further includes:

The deleting module 204 is configured to send a message requesting to delete the bearer to the public data network gateway after the stopping module 201 stops the public data network gateway from transmitting the downlink data to the serving gateway 2 by using the foregoing bearer.

The embodiment of the present invention provides a system for initiating active paging, which may report that the bearer does not exist to the serving gateway when the MME/SGSN fails to cause the paging failure in the bearer context, and stops the PDN GW from sending to the SGW. Downstream data to save network resources.

It should be noted that: the system for initiating active paging provided by the foregoing embodiment is only illustrated by the division of the foregoing functional modules. In actual applications, the foregoing functions may be allocated by different functional modules according to requirements. Upon completion, the internal structure of the system is divided into different functional modules to complete all or part of the functions described above. In addition, the system for initiating active paging provided by the foregoing embodiment is the same as the method for initiating the active paging. The specific implementation process is described in detail in the method embodiment, and details are not described herein again.

Example 4

As shown in FIG. 9, this embodiment provides a network element, where the network element includes:

The receiving module 401 is configured to receive a downlink data notification message sent by the serving gateway, where the downlink data notification message includes an identifier;

The determining module 402 is configured to determine whether the bearer identifier exists in the bearer context stored by the determining module. The error processing module 403 is configured to: when the determining module 402 determines that the bearer identifier does not exist, send an error message that the bearer corresponding to the bearer identifier does not exist to the serving gateway, where the serving gateway sends the bearer to the public data network gateway. The non-existent notification, the notification that the bearer does not exist is used to stop the public data network gateway from sending downlink data to the serving gateway through the foregoing bearer, and releasing the resource of the bearer;

The paging module 404 is configured to initiate paging when the determining module 402 determines that the bearer identifier is present.

Further, as shown in FIG. 10, the error processing module 403 specifically includes:

The error adding unit 4031 is configured to: when the determining result of the determining module 402 is that the bearer identifier does not exist, add the error information that the bearer corresponding to the bearer identifier does not exist to the downlink data notification response message;

The error sending unit 4032 is configured to send, to the serving gateway, a downlink data notification response message after the error adding unit 4031 adds the error information that the bearer corresponding to the bearer identifier does not exist to the downlink data notification response message.

The network element provided in this embodiment may report that the bearer does not exist to the serving gateway when the paging failure occurs due to the MME/SGSN being out of synchronization in the bearer context, and stop the PDN GW from sending downlink data to the SGW to save the data. Internet resources.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

All or part of the steps in the embodiments of the present invention may be implemented by using software, and the corresponding software program may be stored in a readable storage medium, such as an optical disk or a hard disk.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the scope of the present invention. Inside.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that the computer or its Executing a series of operational steps on his programmable device to produce computer-implemented processing such that instructions executed on a computer or other programmable device are provided for implementation in a flow or a block and/or block diagram of a block or The steps of the function specified in multiple boxes.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the art that, Therefore, it is intended that the appended claims be interpreted as including

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, it is intended that the present invention cover the modifications and modifications of the embodiments of the invention.

Claims

Rights request

A method for initiating active paging, the method comprising:

The method according to claim 1, wherein the sending, by the service gateway, the error information that the bearer corresponding to the bearer identifier does not exist, specifically includes:

The method according to claim 1, wherein the method further comprises: before the public data network gateway stops sending downlink data to the serving gateway by using the bearer, the method further includes:

The method according to claim 3, wherein the method further comprises: before determining whether the error information that the bearer identifier corresponding to the bearer identifier that is sent by the second network element is not present is received, the method further includes:

If not, sending an error message of paging failure to the serving gateway;

If it does, initiate a page.

The method according to claim 3 or 4, wherein the first network element is a general packet radio service support node SGSN, and the second network element is a mobility management entity MME; or

The method according to claim 1, wherein said causing said public data network gateway to stop passing said After the downlink data is sent to the serving gateway, the method further includes:

A system for initiating active paging, wherein the system includes a first network element and a serving gateway; wherein, the first network element includes:

The service gateway specifically includes:

The system according to claim 7, wherein the first processing module specifically includes:

a joining unit, configured to: when the judgment result of the first determining module is that the bearer identifier does not exist, add the error information that the bearer corresponding to the bearer identifier does not exist to the downlink data notification response message;

The error sending unit is configured to send, to the serving gateway, a downlink data notification response message, after the adding unit adds the error information that the bearer corresponding to the bearer identifier does not exist to the downlink data notification response message.

9. The system according to claim 7, wherein the service gateway further comprises:

a second determining module, configured to determine, after the stopping module sends the public data network gateway to stop sending downlink data to the serving gateway by using the bearer, whether the idle state signaling reduction ISR is activated, if the ISR is not The third module is configured to notify the public data network gateway to stop sending downlink data to the serving gateway by using the bearer, and the third determining module is configured to: when the second determining module determines that the ISR is activated, Determining whether the error information of the paging failure sent by the second network element is received, and if the error information of the paging failure sent by the second network element is received, notifying the stopping module to make the public data network The gateway stops sending downlink data to the serving gateway through the bearer.

The system of claim 9, wherein the system further comprises a second network element, the second network element specifically comprising:

a second receiving module, configured to determine, by the third determining module, whether the bearer flag sent by the second network element is received Receiving, by the service gateway, a downlink data notification message, where the corresponding bearer does not exist, and the downlink data notification message includes an identifier;

The system according to claim 9 or 10, wherein the first network element is a general packet radio service support node SGSN, and the second network element is a mobility management entity MME; or

The system according to claim 7, wherein the service gateway further comprises:

A network element, wherein the network element includes:

The network element according to claim 13, wherein the error processing module specifically includes: an error adding unit, configured to: when the determining result of the determining module is that the bearer identifier does not exist, The error information that the bearer identifier does not exist is added to the downlink data notification response message;

The error sending unit is configured to send, to the serving gateway, a downlink data notification response message that is added to the downlink data notification response message by the error adding unit to add the error information that the bearer corresponding to the bearer identifier does not exist.