WO2013034091A1

WO2013034091A1 - Method and apparatus for processing sms service

Info

Publication number: WO2013034091A1
Application number: PCT/CN2012/081077
Authority: WO
Inventors: 王胡成
Original assignee: 电信科学技术研究院
Priority date: 2011-09-08
Filing date: 2012-09-06
Publication date: 2013-03-14
Also published as: CN102300283A; CN102300283B

Abstract

Disclosed is a method for processing a short messaging service (SMS) service, so as to reduce the load of a mobility management entity (MME). The method comprises: an MME receiving a paging message related to an SMS service from a mobile switching center (MSC) (201); the MME detecting whether overloaded occurs locally, and determining whether a user equipment (UE) that needs to receive the SMS service is in idle state (202); and if the MME is overloaded and the UE is in idle state, the MME not sending the paging message to the UE, and the MME setting a prompt identifier for instructing the MME to notify, after the UE enters connected state, a core network to resend an SMS message (203). Also disclosed is an apparatus for implementing the method.

Description

The present invention claims the priority of the Chinese patent application filed on September 8, 2011 by the Chinese Patent Office, the application number is 201110265432.1, and the invention name is "a processing method and device for an SMS service". The entire contents of which are incorporated herein by reference. Technical field

The present invention relates to the field of communications, and in particular, to a method and apparatus for processing a Short Message Service (SMS) service. Background technique

The existing 3rd Generation Mobile Telecommunications (3GPP) protocol proposes that when the core network control entity SGSN (Serving GPRS (General Packet Radio Service) support node) or the Mobility Management Entity (MME) is overloaded, it may preferentially refuse to carry low priority. The non-access stratum (NAS) request message of the level access indication, and optionally the backoff time in the reject message, so that the terminal cannot initiate any request before the backoff timer expires. However, in the Evolved Universal Terrestrial Radio Access Network (E-UTRAN), if the terminal is jointly attached in a Packet Switched (PS) domain and a Circuit Switched (CS) domain, then when the terminal performs When a mobile terminated (MT) SMS service is used, the Mobile Switching Centre (MSC) needs to send a paging of the PS domain to the terminal through the MME. The process is as shown in FIG. 1, which includes:

Step 101: The terminal and the network side perform an Evolved Packet System (EPS) or an International Mobile Subscriber Identifier (IMSI) attach procedure, and initiate an SMS service.

Step 102: The short message center (SC) sends a message transfer message to the short message service (Gateway Message MSC, SMS-GMSC) when the SMS service arrives.

Step 103: The SMS-GMSC sends a Send Routeing Info For Short Message to the Home Subscriber Server (HSS) (or Home Location Register (HLR)).

Step 104: The HSS forwards a short message ( Forward Short Message) to the MSC.

Step 105: The MSC sends a paging message (Paging) to the MME.

Step 106: If the terminal is in the idle mode, the MME sends a paging message (Paging) to the terminal (MS or UE) through the base station (eNodeB) in the PS domain.

Step 107: After receiving the paging message, the terminal initiates an RRC connection establishment process, and sends a service request (Service Request). It can be seen that when the terminal performs joint attachment in the PS domain and the CS domain at the same time, the MME does not detect whether the load is detected, and sends a paging message to the terminal. If the MME is overloaded at this time, the sending of the paging message and the RRC connection establishment process both increase the load of the MME, affect the network performance, and when the MME load is too large to accept any request, the previous process wastes the signaling resources. Summary of the invention

The embodiment of the invention provides a method and a device for processing an SMS service, which are used to reduce the load of the MME.

A method for processing an SMS service, which is applied to the MME side, includes the following steps:

The mobility management entity MME receives the paging message about the SMS service sent by the mobile switching center MSC; the MME detects whether the local is overloaded, and determines whether the UE that needs to receive the SMS service is in an idle state; if the MME is overloaded and the UE is in an idle state, Then, the MME does not send a paging message to the UE, and sets an identifier indicating the alert, and is used to prompt the MME to notify the core network to resend the SMS message after the UE enters the connected state.

A method for processing an SMS service, applied to the MSC side, includes the following steps:

The MSC sends a paging message about the SMS service to the MME;

The MSC receives the message that is sent by the MME and carries the indication information indicating that the MME is overloaded, and the message carrying the indication information indicating that the MME is overloaded carries the indication information indicating that the MME is overloaded.

A mobility management entity MME, comprising:

An interface module, configured to receive a paging message about the SMS service sent by the mobile switching center MSC, and a control module, configured to detect whether the local device is overloaded, and determine whether the UE that needs to receive the SMS service is in an idle state; if the MME is overloaded and the UE is If the user is in the idle state, the paging message is not sent to the UE, and the indication identifier is set to prompt the MME to notify the core network to resend the SMS message after the UE enters the connected state.

A mobile switching center MSC includes:

a sending module, configured to send a paging message about the SMS service to the MME;

The receiving module is configured to receive, by the MME, a message that carries the indication information indicating that the MME is overloaded, and the message that carries the indication information indicating that the MME is overloaded carries the indication information indicating that the MME is overloaded.

In the embodiment of the present invention, after receiving the paging message about the SMS service, the MME detects whether the local is overloaded and whether the UE is in an idle state. If yes, the MME does not send a paging message to the UE, so as not to aggravate the local load, and set An identifier indicating a reminder to resend an SMS message to the UE after the UE enters the connected state. DRAWINGS

1 is a flow chart of a method for processing an SMS service in the prior art;

2 is a flowchart of a main processing method of an SMS service according to an embodiment of the present invention;

3 is a flowchart of a detailed processing method of an SMS service according to an embodiment of the present invention;

4 is a flowchart of a method for processing an SMS service after a UE enters a connected state according to an embodiment of the present invention; FIG. 5 is a flowchart of a main processing method of an SMS service on an MSC side according to an embodiment of the present invention;

6 is a flowchart of a detailed processing method of an SMS service on an MSC side according to an embodiment of the present invention;

FIG. 7 is a structural diagram of an MME according to an embodiment of the present invention;

8 is a main structural diagram of an MSC according to an embodiment of the present invention;

FIG. 9 is a detailed structural diagram of an MSC according to an embodiment of the present invention. detailed description

In the embodiment of the present invention, after receiving the paging message about the SMS service, the MME detects whether the local is overloaded and whether the UE is in an idle state. If yes, the MME does not send a paging message to the UE, so as not to aggravate the local load, and set An identifier indicating a reminder to resend an SMS message to the UE after the UE enters the connected state.

Referring to FIG. 2, the main processing method of the SMS service in this embodiment is as follows:

Step 201: The MME receives a paging message about the SMS service sent by the MSC.

Step 202: The MME detects whether the local is overloaded, and determines whether the UE that needs to receive the SMS service is in an idle state.

Step 203: If the MME is overloaded and the UE is in the idle state, the MME does not send a paging message to the UE, and sets an identifier indicating the alert, and is used to prompt the MME to notify the core network to resend the SMS message after the UE enters the connected state.

If the MME is not overloaded, the MME sends a paging message to the UE, see step 106. If the UE is in the connected state, an SMS message is sent to the UE.

After the MME is set to indicate the reminder identifier, the core network needs to have corresponding operations. The implementation process is described in detail below through an embodiment.

Referring to FIG. 3, the detailed processing method of the SMS service in this embodiment is as follows:

When an SMS service arrives, the SC sends a message direct transmission message to the SMS-GMSC; the SMS-GMSC exchanges the routing information of the short message with the HSS, and sends a short message to the MSC, and then continues the following steps.

Step 301: The MME receives a paging (Paging) message about the SMS service sent by the MSC.

Step 302: The MME detects whether the local overload (overload), and determines whether the UE that needs to receive the SMS service is in an idle state (Idle).

Step 303: If the MME is overloaded and the UE is in the idle state, the MME sets an identifier indicating the alert, and is used to prompt the MME to notify the core network to resend the SMS message after the UE enters the connected state, and does not send the paging message to the UE. Among them, the identifier indicating the reminder is the Non-EPS Alert (non-evolved grouping system reminder) identifier.

Step 304: If the MME is overloaded and the UE is in an idle state, the MME sends a message carrying the indication information indicating that the MME is overloaded to the MSC, for example, may be a Paging Reject message, and the paging rejection message carries a representation. Indicates the MME overload. This indication can be indicated by a specific cause value.

Step 305: After receiving the message carrying the indication information indicating that the MME is overloaded, the MSC sets the indication to indicate the SMS industry. The unreachable identifier is used to prompt the MSC to notify the SC to resend the SMS message through the SMS-GMSC after the UE enters the connected state. Among them, the identifier indicating that the SMS service is unreachable, such as MNRS (Mobile-station-Not-Reachable-for-SMS), can be used in the network deployment with only SMS-only (Mobile-Station-Not) -Reachable-Flag ) tag to achieve.

Step 306: After receiving the message carrying the indication information indicating that the MME is overloaded, the MSC sends a failure report to the SMS-GMSC, where the failure report carries an error indication message indicating that the SMS service is unreachable.

Step 307: The SMS-GMSC receives the failure. The message is sent to the SC 4 and the HSS (or HLR) is sent an error message indicating that the SMS service is unreachable.

Step 308: After receiving the error message indicating that the SMS service is unreachable, the HSS (or HLR) sets an identifier indicating that the SMS service is unreachable.

After the HSS or the HLR is set to indicate that the SMS service is unreachable, when the SMS service of the new UE arrives, the SMS-GMSC queries the HSS or the HLR to set an identifier indicating that the SMS service is unreachable, and stops sending to the MSC. SMS message.

The identifications mentioned in this embodiment are similarly identified in the prior art. In the flow shown in Figure 1, if the MT SMS is not successfully delivered to the UE due to some reason of the MSC or the MME, the MSC should set the MNRF identity and return an error report to the SMS-GMSC (failure report) And sending an Alert Request message to the MME on the SGs (an interface) interface. After receiving the failure report, the SMS-GMSC will report an error to the HSS or HLR and perform corresponding operations. For example, if the error is reported as Absent subscriber, the HSS or HLR needs to add a new entry in the Messages-Wait-Data. And set the identifier in the Message Waiting message: Mobile Station Unreachable Identity (MNRF, Mobile-Station-Not-Reachable-Flag), Mobile Station Unreachable for GPRS System (MNRG, Mobile-station-Not-Reachable -for-GPRS), MSC Cause Mobile Station Unreachable (MNRR-MSC, Mobile-Station-Not-Reachable-via-the-MSC-Reason) and SGSN Cause Mobile Station Unreachable (MNRR-SGSN, Mobile-Station-Not One of -Reachable-via-the-SGSN-Reason). After receiving the Alert Request message, the MME sets the Non-EPS Alert Flag. The identifiers set by the MME and each device in the core network are for all services, and the paging message is rejected for all services.

In this embodiment, the MME and the identifiers set by the devices in the core network are all for the SMS service. When the MME is overloaded, only the paging message of the SMS service is rejected, and the paging message for other services is still sent to the UE, which is also related to The difference between an existing short message (or service) unreachable identity.

After the MME determines that the UE enters the connected state, it needs to notify the core network to resend the SMS message to the UE. The implementation process is described in detail below through an embodiment.

Referring to FIG. 4, in the embodiment, the processing method of the SMS service after the UE enters the connected state is as follows:

Step 401: The MME determines that the UE enters a connected state. Step 402: The MME sends an identifier indicating a UE activation indicator (UE-Activity-Indication) to the MSC according to the set identifier indicating that the SMS service is unreachable.

Step 403: The MME clears the set identifier that indicates that the SMS service is unreachable. This step can be performed in synchronization with step 402.

Step 404: After receiving the identifier indicating the activation indication of the UE, the MSC sends a ReadyforSM message to the HSS (or HLR) according to the set identifier indicating that the SMS service is unreachable, indicating the HSS (or HLR). ) Clear the set identifier that indicates that the SMS service is unreachable. The HSS (or HLR) clears the set of indications that the SMS service is not reachable (such as Mobile-station-Not-Reachable-for-SMS) after receiving the pre-requisite message for the SM. If the MSC does not previously set an identifier indicating that the SMS service is unreachable, it only operates according to the identifier indicating the UE activation indication, and an erroneous operation may occur. For example, the MME incorrectly sends an identifier indicating the UE activation indication, or the MSC activates other services of the UE according to the identifier indicating that the UE activation indication is incorrect.

Step 405: After receiving the identifier indicating the activation indication of the UE, the MSC determines that the UE is reachable. According to the set identifier indicating that the SMS service is unreachable, the MSC clears the SMS service unreachable identifier, and notifies the SC to resend the SMS message through the SMS-GMSC. .

The acknowledgment of the paging message in the embodiment and the notification that the core network resends the SMS message to the UE is initiated by the MME, and the identifier set by the MSC according to the refusal paging message sent by the MME is an identifier of the SMS service unreachable, which is different from the prior art. the difference. The following describes the processing process of the MSC in the SMS service.

Referring to FIG. 5, the main processing method of the SMS service on the MSC side in this embodiment is as follows:

Step 501: The MSC sends a paging message about the SMS service to the MME.

Step 502: The MSC receives a message that is sent by the MME and carries indication information indicating that the MME is overloaded.

Referring to FIG. 6, the detailed processing method of the SMS service on the MSC side in this embodiment is as follows:

Step 601: The MSC sends a paging message about the SMS service to the MME.

Step 602: The MSC receives a message that is sent by the MME and carries indication information indicating that the MME is overloaded.

Step 603: After receiving the message that the MME sends the indication information indicating that the MME is overloaded, the MSC sets an identifier indicating that the SMS service is unreachable, and is used to prompt the MSC to notify the SMS-GMSC after the UE enters the connected state.

The SC resends the SMS message.

Step 604: After receiving the message carrying the indication information indicating that the MME is overloaded, the MSC sends a failure message to the SMS-GMSC, where the failure report carries the error indication information indicating that the SMS service is unreachable.

The above describes the implementation process of the SMS service. The main improvement points of the process are on the MME and the MSC. The internal structure and functions of the two devices are described below.

Referring to FIG. 7, the MME in this embodiment includes: an interface module 701 and a control module 702.

The interface module 701 is configured to receive a paging message about the SMS service sent by the mobile switching center MSC. The control module 702 is configured to detect whether the local device is overloaded, and whether the UE that needs to receive the SMS service is in an idle state. If the MME is overloaded and the UE is in an idle state, the paging message is not sent to the UE, and the reminder identifier is set. The MME is notified to notify the core network to resend the SMS message after the UE enters the connected state.

If the MME is overloaded and the UE is in an idle state, the interface module 701 is further configured to send, to the MSC, a message carrying indication information indicating that the MME is overloaded.

The control module 702 is further configured to: determine that the UE enters a connected state, and clear the set identifier that indicates that the SMS service is unreachable; and instruct the interface module to send, to the MSC, a UE activation indication according to the set identifier that indicates that the SMS service is unreachable. Logo.

Referring to FIG. 8, the MSC in this embodiment includes: a sending module 801 and a receiving module 802. The sending module 801 and the receiving module 802 can belong to the same interface.

The sending module 801 is configured to send a paging message about the SMS service to the MME.

The receiving module 802 is configured to receive a message that is sent by the MME and that carries the indication information indicating that the MME is overloaded.

The MSC also includes: a control module 803, as shown in FIG. The control module 803 is configured to: after receiving the message that is sent by the MME and carrying the indication information indicating that the MME is overloaded, set an identifier indicating that the SMS service is unreachable, and is used to prompt the MSC to notify the SC to resend the SMS through the SMS-GMSC after the UE enters the connected state. Message. The sending module 801 is further configured to: after receiving the message carrying the indication information indicating that the MME is overloaded, send a failure message to the SMS-GMSC, where the failure message contains an error indication message indicating that the SMS service is unreachable.

In the embodiment of the present invention, after receiving the paging message about the SMS service, the MME detects whether the local is overloaded and whether the UE is in an idle state. If yes, the MME does not send a paging message to the UE, so as not to aggravate the local load, and set An identifier indicating a reminder to resend an SMS message to the UE after the UE enters the connected state. After the MME sets the identifier indicating the reminder, the core network needs to set the corresponding identifier according to the notification of the MME to ensure the reliability and stability of the SMS service. Moreover, after the UE enters the connected state, the MME notifies the core network to resend the SMS message to the UE, and the MME and the core network clear the set identifier indicating that the SMS service is unreachable.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, 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 present invention is in the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.

The present invention has been 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 a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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

Claims

Rights request

I. A short message service method for processing an SMS service, characterized in that it comprises the following steps:

The mobile switching center MSC sends a paging message about the SMS service to the mobility management entity MME;

The MSC receives a message that is sent by the MME and carries indication information indicating that the MME is overloaded.

The method according to claim 1, further comprising the steps of: after receiving the message that the MME sends the indication information indicating that the MME is overloaded, the MSC sets an identifier indicating that the SMS service is unreachable, and is used to prompt the MSC to The SMS service is unreachable.

3. The method according to claim 2, wherein, when the MSC determines that the UE is reachable, the MSC clears the SMS service unreachable identifier, and notifies the SC to resend the SMS message through the short message service-Gateway Mobile Switching Center SMS-GMSC.

4. The method according to claim 3, wherein when receiving the UE activation indication, the MSC determines that the UE is reachable.

The method according to claim 2, further comprising the steps of: after receiving the message carrying the indication information indicating that the MME is overloaded, the MSC sends a failure 4 report to the SMS-GMSC, where the failure 4 is carried. There is an error indication message indicating that the SMS service is unreachable.

6. A short message service The method for processing an SMS service, characterized in that it comprises the following steps:

The mobility management entity MME receives the paging message about the SMS service sent by the mobile switching center MSC; the MME detects whether the local device is overloaded, and determines whether the user equipment UE that needs to receive the SMS service is in an idle state;

If the MME is overloaded and the UE is in the idle state, the MME does not send a paging message to the UE, and sets an identifier indicating the reminder for prompting the MME to notify the core network to resend the SMS message after the UE enters the connected state.

The method according to claim 6, wherein if the MME is overloaded and the UE is in an idle state, the method further includes the step of: the MME sending a message carrying the indication information indicating that the MME is overloaded to the MSC.

The method according to claim 7, further comprising the steps of: after receiving the message carrying the indication information indicating that the MME is overloaded, the MSC sets an identifier indicating that the SMS service is unreachable, and is used to prompt the MSC to enter the UE. After the connection state, the short message service-gateway mobile switching center SMS-GMSC notifies the short message center SC to resend the SMS message.

9. The method according to claim 8, further comprising the steps of: after receiving the message carrying the indication information indicating that the MME is overloaded, the MSC sends a failure 4 report to the SMS-GMSC, and the failure 4 is carried by the failure. There is an error indication message indicating that the SMS service is unreachable.

10. The method according to claim 9, further comprising the step of: after receiving the failure report, the SMS-GMSC reports an error to the short message center SC 4, and sends the error to the home subscriber server HSS or the home location register HLR. Indicates that the SMS service is unreachable.

II. The method of claim 10, further comprising the step of: receiving an SMS representation by the HSS or HLR After the service unreachable error message is set, the identifier indicating that the SMS service is unreachable is set.

The method according to claim 11, further comprising the steps of: after the HSS or the HLR sets an identifier indicating that the SMS service is unreachable, when a new SMS service for the UE arrives, and the SMS-GMSC queries When an identifier indicating that the SMS service is unreachable is set to the HSS or the HLR, the sending of the SMS message to the MSC is stopped.

The method according to claim 11, further comprising the steps of: the MME determining that the UE enters a connected state, and sending an identifier indicating a UE activation indication to the MSC according to the set identifier indicating that the SMS service is unreachable. And clear the set identifier that indicates that the SMS service is unreachable.

The method according to claim 13, further comprising the steps of: after receiving the identifier indicating the activation indication of the UE, the MSC sends the SMS to the HSS or the HLR according to the set identifier indicating that the SMS service is unreachable. The preparation message indicates that the HSS or the HLR clears the set identifier indicating that the SMS service is unreachable.

The method according to claim 14, further comprising the steps of: after receiving the identifier indicating the activation indication of the UE, the MSC notifies the SC to retransmit the SMS through the SMS-GMSC according to the set identifier indicating that the SMS service is unreachable. SMS message.

16. A mobile switching center MSC, comprising:

a sending module, configured to send a paging message about the short message service SMS service to the mobility management entity MME, and a receiving module, configured to receive, by the MME, a message that carries the indication information indicating that the MME is overloaded.

The MSC according to claim 16, further comprising: a control module, configured to: after receiving a message that is sent by the MME and carrying the indication information indicating that the MME is overloaded, setting an identifier indicating that the SMS service is unreachable, The current MSC service of the MSC is unreachable.

The MSC according to claim 17, wherein the control module is further configured to: when determining that the UE is reachable, clear the SMS service unreachable identifier, and notify the short message service-gateway mobile switching center SMS-GMSC The SC resends the SMS message.

The MSC according to claim 18, wherein the control module determines that the UE is reachable when receiving the UE activation indication.

The MSC according to claim 17, wherein the sending module is further configured to receive the received representation

After the message of the indication information of the MME overload, the failure message 4 is sent to the SMS-GMSC, and the failure 4 message carries the error indication information indicating that the SMS service is unreachable.

A mobility management entity MME, comprising:

The MME according to claim 21, wherein if the MME is overloaded and the UE is in an idle state, The interface module is further configured to send, to the MSC, a message carrying indication information indicating that the MME is overloaded.

The MME according to claim 22, wherein the control module is further configured to: determine that the UE enters a connected state, and clear an identifier that is set to indicate that the SMS service is unreachable; and instruct the interface module to perform the representation according to the setting The identifier of the SMS service unreachable, sending an identifier indicating the UE activation indication to the MSC.