WO2017059728A1

WO2017059728A1 - Load reporting and control method, emsc device, mme device and communications system

Info

Publication number: WO2017059728A1
Application number: PCT/CN2016/093256
Authority: WO
Inventors: 常亮
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-10-09
Filing date: 2016-08-04
Publication date: 2017-04-13
Also published as: CN106572496A

Abstract

A load reporting and control method, eMSC device, MME device and communications system. The MME device sends a service message to the eMSC device through an Sv interface; the eMSC device inserts a current load message thereof into a processing message obtained by processing a service message sent by the eMSC device; the eMSC device feeds back the processing message through the Sv interface to the MME device; and the MME device acquires the current load message of the eMSC device from the processing message, and subsequent services initiated with respect to the eMSC device are determined on the basis of the load message.

Description

Load reporting and control method, eMSC device, MME device and communication system

Technical field

This document relates to, but is not limited to, the field of communications, and more particularly to a load reporting and control method, an eMSC (Enhanced Mobile Switch Center) device, an MME (Mobile Management Entity) device, and a communication system.

Background technique

As shown in FIG. 1 , the Sv interface is currently a MME (Mobile Management Entity) and an eMSC (enhanced mobile switch center) in the Srvcc (Signal Radio Voice Call Continuity) handover process. The interface between the MME and the eMSC is in the Srvcc process. The interface communication is based on the GT (Tunnelling Protocol for Control plane) on the User Datagram Protocol (UDP). Transfer Protocol.

When the CS (Circuit Switch) domain is configured as a pool, the MME connects to all eMSCs in the pool through the corresponding Sv interface. See Figure 2. As the service required in the pool is balanced, the MME is required to initiate the Srvcc service (the service of the Sv interface) to each eMSC. The balance of the service initiated by the MME in actual commercial use mainly depends on the static configuration. Load control, but there is no means for the MME to dynamically sense the eMSC side load, which may cause a situation of "respectively" on both sides, causing service storms on the Sv interface, causing the load to continue to increase or the service success rate to decrease.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiment of the invention provides a load reporting and control method, an eMSC device, an MME device, and a communication system, which can implement the MME device to dynamically sense the load on the eMSC device side, thereby improving the load control effect.

The embodiment of the invention provides a load reporting method, including:

The enhanced mobile switching center device receives the service sent by the mobility management entity device through the Sv interface Message

The enhanced mobile switching center device inserts its current load message into the processing message obtained by processing the service message;

The enhanced mobile switching center device feeds back the processing message to the mobility management entity device through the Sv interface.

The embodiment of the invention further provides a load control method, including:

The mobility management entity device sends a service message to the enhanced mobile switching center device through the Sv interface;

Receiving, by the mobility management entity device, a processing message that is sent by the enhanced mobile switching center device by using the Sv interface, where the processing message includes a current load message of the enhanced mobile switching center device;

And the mobility management entity device obtains the load message from the processing message, and determines, according to the load message, a service that is subsequently initiated to the enhanced mobile switching center device.

The enhanced mobile switching center device inserts its current load message into a processing message obtained by processing the service message;

The enhanced mobile switching center device feeds back the processing message to the mobility management entity device through the Sv interface;

And the mobility management entity device obtains the load message of the enhanced mobile switching center device from the processing message, and subsequently initiates a service to the enhanced mobile switching center device according to the load message.

Optionally, the service message includes at least one of a handover request message and a path detection request message.

Optionally, when the service message includes a handover request message, the processing message includes at least one of a handover response message, a handover cancellation notification message, a handover cancellation completion message, and a version non-support notification message;

When the service message includes a path detection request message, the processing message includes a path detection ring The message, version does not support at least one of the notification messages.

Optionally, the method further includes: when the service message includes a handover request message, the enhanced mobile switching center determines, after receiving the handover request message, the user that initiates the handover request message when the current load is allowed to process the handover request message. Whether the user data exists locally before, if not, the other enhanced mobile switching centers in the notification pool group delete the user data of the user, and execute the switching process subsequent to the switching request message after receiving the deletion completion notification.

Optionally, the mobility management entity device determines, according to the load message, subsequent initiation of the service to the enhanced mobile switching center device, including:

And determining, by the mobility management entity device, that the current load of the enhanced mobile switching center device is greater than or equal to an unavailable threshold according to the load message, starting an unavailable detection period, and determining to detect the enhanced mobile switching in the unavailable detection period. Whether the service initiated by the central device fails, and whether the load of the enhanced mobile switching center device is always greater than or equal to the unavailable threshold according to the load message in the processing message fed back by the enhanced mobile switching center device, and if so, no longer Initiating a service to the enhanced mobile switching center device.

Optionally, it also includes:

After the mobility management entity device determines that the service is no longer initiated to the enhanced mobile switching center device,

Sending a path detection request message to the enhanced mobile switching center device, and determining, according to the load message included in the path detection response message fed back by the enhanced mobile switching center device, whether the current load of the enhanced mobile switching center device is less than the unavailable threshold If so, it is determined that the enhanced mobile switching center device is currently available.

Optionally, it also includes:

After the mobile management entity device determines that the current load of the enhanced mobile switching center device is less than the unavailable threshold, before determining that the enhanced mobile switching center device is currently available,

An available detection period is initiated during which it is determined whether the load of the enhanced mobile switching center device is always less than the unavailable threshold, and if so, it is determined that the enhanced mobile switching center device is currently available.

The embodiment of the invention further provides an enhanced mobile switching center device, including:

a service receiving module, configured to receive a service message sent by the mobility management entity device through the Sv interface;

Inserting a module, configured to insert a current load message of the enhanced mobile switching center device into a processing message obtained by processing the service message;

The feedback module is configured to feed the processing message to the mobility management entity device through the Sv interface.

The embodiment of the invention further provides a mobile management entity device, including:

a service initiation module, configured to send a service message to the enhanced mobile switching center device through the Sv interface;

a receiving module, configured to receive a processing message that is sent by the enhanced mobile switching center device by using the Sv interface, where the processing message includes a current load message of the enhanced mobile switching center device;

And a control module, configured to obtain the load message from the processing message, and determine, according to the load message, a service that is subsequently initiated to the enhanced mobile switching center device.

The embodiment of the present invention further provides a communication system, including an enhanced mobile switching center device and a mobility management entity device. The enhanced mobile switching center device includes a service receiving module, an insertion module, and a feedback module. The mobility management entity device includes a service. Initiating module, receiving module and control module;

The service receiving module is configured to receive a service message sent by the service initiation module by using an Sv interface;

The insertion module is configured to insert a current load message of the enhanced mobile switching center device into a processing message obtained by processing the service message;

The feedback module is configured to feed the processing message to the receiving module through the Sv interface;

The service initiating module is configured to send the service message to the service receiving module by using an Sv interface;

The receiving module is configured to receive a processing message that is fed back by the feedback module by using the Sv interface;

The control module is configured to obtain the load message from the processing message, and determine, according to the load message, a service that is subsequently initiated to the enhanced mobile switching center device.

When the service message includes a path detection request message, the processing message includes at least one of a path detection response message and a version non-support notification message.

The beneficial effects of the embodiments of the present invention are:

The load reporting and control method, the eMSC device, the MME device, and the communication system provided by the embodiment of the present invention, the MME device sends a service message to the eMSC device through the Sv interface; the eMSC device inserts its current load message into the service message sent by the processing eMSC device. The eMSC device feeds the processing message to the MME device through the Sv interface; the MME device obtains the current load message of the eMSC device from the processing message, and decides to initiate a service to the eMSC device according to the load message. That is, the eMSC in the embodiment of the present invention can input the current load information into the processing message (including each type of response message and/or release message) obtained by processing the service message sent by the MME device, and then feed back to the MME device. In order to facilitate the MME device to dynamically learn the load situation on the eMSC device side, and then dynamically decide how to initiate the service to the eMSC device, thereby avoiding the service storm on the Sv interface between the eMSC device and the MME device, thereby avoiding the load. Continue to increase or decrease the service success rate, thereby realizing that the MME device dynamically senses the load on the eMSC device side and improves the load control effect.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic diagram of a connection between a mobility management entity device and an enhanced mobile switching center device in the related art;

2 is a schematic diagram of networking connection when a circuit switching domain side is a pool group in the related art;

3 is a schematic flowchart of a load control method according to Embodiment 1 of the present invention;

4 is a schematic flowchart of a load reporting method according to Embodiment 2 of the present invention;

FIG. 5 is a schematic flowchart of a load control method according to Embodiment 3 of the present invention; FIG.

6 is a schematic structural diagram of a communication system according to Embodiment 4 of the present invention;

7 is a schematic structural diagram of an apparatus for enhancing a mobile switching center according to Embodiment 4 of the present invention;

8 is a schematic structural diagram of a mobile management entity device according to Embodiment 4 of the present invention;

9 is a schematic flowchart 1 of a load control method according to Embodiment 5 of the present invention;

10 is a second schematic flowchart of a load control method according to Embodiment 5 of the present invention;

11 is a schematic flowchart 3 of a load control method according to Embodiment 5 of the present invention;

FIG. 12 is a fourth schematic flowchart of a load control method according to Embodiment 5 of the present invention.

Embodiments of the invention

The eMSC in the embodiment of the present invention can insert the current load information into the processing message obtained by processing the service message sent by the MME device, and then feed back to the MME device, so that the MME device can dynamically learn the load situation on the eMSC device side, and further The dynamic decision is followed by how to initiate a service to the eMSC device to avoid causing a traffic storm on the Sv interface between the eMSC device and the MME device, causing the load to continue to increase or the service success rate to decrease. The present invention will be further described in detail below with reference to the accompanying drawings.

Embodiment 1:

Referring to FIG. 3, the load control method in this embodiment includes the following steps:

Step 301: The mobility management entity (MME) device sends a service message to the enhanced mobile switching center (eMSC) device through the Sv interface.

Step 302: The enhanced mobile switching center device receives the service message sent by the enhanced mobile switching center device.

Step 303: The enhanced mobile switching center device inserts its current load message into the processing message obtained by processing the service message.

Step 304: The enhanced mobile switching center device feeds the processing message to the mobility management entity device through the Sv interface.

Step 305: The mobility management entity device receives a processing message that is enhanced by the mobile switching center device.

Step 306: The mobility management entity device obtains a load message of the enhanced mobile switching center device from the processing message, and subsequently initiates a service to the enhanced mobile switching center device according to the load message decision.

The load message in this embodiment includes a message for reflecting the current load situation of the enhanced mobile switching center device, and may adopt any one or more indicators that can feedback the current load of the mobile switching center device, such as the occupied user ratio (Percent). Of Occupied Subscribers, POS), or other resource utilization and more.

The processing message in this embodiment includes the message obtained by processing the service message after the mobile switching center device receives the service message initiated by the mobility management entity device, and it should be understood that the processing message may be one or more response messages. And/or release the message. For example, the service message in this embodiment may include at least one of a handover request message and a path detection request message. In order to improve the real-time performance of the feedback, the handover request message and the path detection request message may be selected. In addition, it should be understood that, according to the protocol, the message header of the message sent by the mobility management entity device to the enhanced mobile switching center device through the Sv interface includes the version information of the local end; and the enhanced mobile switching center device can receive the message after receiving the message. The current version information of the self is matched, and it is judged whether it is supported. If not, the version of the mobile management entity device does not support the notification message.

The handover request message in this embodiment may include a PS (Packet Switch) domain to Circuit Switch (CS) domain handover request message; when the service message includes a handover request message, the enhanced mobile switching center device receives the handover. After the request message, the processing message obtained by processing the handover request message may be a handover response message (SRVCC PS to CS Response), a handover cancellation notification message (SRVCC PS to CS Cancel Notification), and a handover cancellation completion message (SRVCC PS to CS Cancel Acknowledge), a path detection response message, or a version not supported message (Version Not Supported message); that is, the processing message in this embodiment may include a handover response message, a handover cancellation notification message, a handover cancellation completion message, and a version not At least one of the support notification messages may be inserted into the mobility management entity device after inserting the load message into at least one of the handover response message, the handover cancellation notification message, the handover cancellation completion message, and the version non-support notification message.

When the service message in this embodiment includes a path detection request message, the enhanced mobile switching center is loaded. After receiving the path detection request message, the path detection request message may be processed to include at least one of an Echo Response message and a Version Not Supported message. Alternatively, the load management message may be inserted into at least one of the path detection response message and the version not supporting the notification message, and then fed back to the mobility management entity device.

In addition, in this embodiment, when the mobility management entity device sends a handover request message (PS domain to CS domain handover request message) to the enhanced mobile switching center device, after the enhanced mobile switching center device receives the handover request message, it is currently in its own state. When the load is allowed to process the handover request message, it is determined whether the user who initiated the handover request message has local user data before, if not, the other enhanced mobile switching center in the pool of the notification pool group deletes the user data of the user, and receives the user data. After the deletion completion notification, the subsequent switching process of the handover request message is performed. This avoids repeated camping of the same user on multiple enhanced mobile switching center devices. In this embodiment, the enhanced mobile switching center device may continue to perform the handover process after instructing the other eMSCs to delete the duplicate user data by using the EMS (Element Management Systems) in the pool.

In the foregoing step 306, the mobile management entity device determines, according to the load message in the processing message, the process of subsequently initiating a service to the enhanced mobile switching center device, including:

The mobile management entity device determines, according to the extracted load message, that the current load of the enhanced mobile switching center device is greater than or equal to the unavailable threshold, indicating that the current load of the enhanced mobile switching center device is unavailable, and starting the unavailable detection period (for example, 2 minutes), determining Detecting whether the service initiated to the enhanced mobile switching center device fails in the unavailable detection period, and determining whether the load of the enhanced mobile switching center device is always greater than or equal to the load message in the processing message fed back from the enhanced mobile switching center device The threshold is not available, and if so, no more traffic is initiated to the enhanced mobile switching center device.

After the mobile management entity device determines that the service is no longer initiated to the enhanced mobile switching center device, the method further includes:

The mobility management entity device sends a path detection request message to the enhanced mobile switching center device to shorten the detection period; the mobility management entity device determines to enhance the current load of the mobile switching center device according to the load message included in the path detection response message fed back by the enhanced mobile switching center device. Whether it is less than the unavailable threshold, and if so, it is determined that the enhanced mobile switching center device is currently available.

In addition, in order to further improve the reliability of the judgment result, the mobility management entity in this embodiment After the device determines that the current load of the enhanced mobile switching center device is less than the unavailability threshold, and determines that the enhanced mobile switching center device is currently available, the device further includes the following determining process:

The mobility management entity device initiates an available detection period (the available detection period is preferably set to be less than the unavailable detection period, for example, 1 minute), during which it is determined whether the load of the enhanced mobile switching center device is always less than the unavailable threshold, and if so, It is determined that the enhanced mobile switching center device is currently available, and subsequent new services can be initiated to the enhanced mobile switching center device.

The above solution provided by this embodiment is applicable to the control of the load of a single enhanced mobile switching center device, and is also applicable to a plurality of enhanced mobile switching center devices with a pool side of the pool. The enhanced mobile switching center device in this embodiment can update its own load situation in real time by itself, and the manner of counting its own load can be adopted in any manner. Of course, the load condition of the enhanced mobile switching center device can be statistically collected by other devices. It is then fed back to the enhanced mobile switching center device.

The unavailable threshold in this embodiment may be set to enhance the maximum load supported by the mobile switching center device, for example, to enhance the total dual mode single standby wireless voice call continuity that the mobile switching center device can handle (Srvcc, Single Radio Voice Call Continuity). The ratio of the number of business users, for example, 100%; it is also possible to reserve a certain amount of reservation, for example, set to 80% or 90%, and the like. Of course, other rules can be used according to actual needs.

Embodiment 2:

Referring to FIG. 4, the load reporting method in this embodiment includes the following steps:

Step 401: The enhanced mobile switching center device receives the service message sent by the enhanced mobile switching center device.

Step 402: The enhanced mobile switching center device inserts its current load message into the processing message obtained by processing the service message.

Step 403: The enhanced mobile switching center device feeds back the processing message to the mobility management entity device through the Sv interface.

The handover request message in this embodiment may include a PS (Packet Switch) domain to Circuit Switch (CS) domain handover request message; when the service message includes a handover request message, the enhanced mobile switching center device receives the handover. After the request message, the processing message obtained by processing the handover request message may be a handover response message (SRVCC PS to CS Response), a handover cancellation notification message (SRVCC PS to CS Cancel Notification), and a handover cancellation completion message (SRVCC PS to CS Cancel Acknowledge), the version does not support the message (Version Not Supported message); that is, the processing message in this embodiment may include at least one of a handover response message, a handover cancellation notification message, a handover cancellation completion message, and a version non-support notification message. For example, the load management message may be inserted into at least one of the handover response message, the handover cancellation notification message, the handover cancellation completion message, and the version non-support notification message, and then fed back to the mobility management entity device.

When the service message in this embodiment includes the path detection request message, the enhanced mobile switching center device may process the path detection request message, and may include an Echo Response message and a version not supported notification message. At least one of (Version Not Supported message). Alternatively, the load management message may be inserted into at least one of the path detection response message and the version not supporting the notification message, and then fed back to the mobility management entity device.

In addition, in this embodiment, when the mobility management entity device sends a handover request message (PS domain to CS domain handover request message) to the enhanced mobile switching center device, after the enhanced mobile switching center device receives the handover request message, it is currently in its own state. When the load is allowed to process the handover request message, it is determined whether the user who initiated the handover request message has local user data before, if not, the notification The other enhanced mobile switching centers in the pool group delete the user data of the user, and execute the switching process subsequent to the switching request message after receiving the deletion completion notification. This avoids repeated camping of the same user on multiple enhanced mobile switching center devices. In this embodiment, the enhanced mobile switching center device may continue to perform the handover process after instructing the other eMSCs to delete the duplicate user data by using the EMS (Element Management Systems) in the pool.

Embodiment 3:

Referring to FIG. 5, the load control method in this embodiment includes the following steps:

Step 501: The mobility management entity (MME) device sends a service message to the enhanced mobile switching center (eMSC) device through the Sv interface.

Step 502: The mobility management entity device receives a processing message that is enhanced by the mobile switching center device.

Step 503: The mobility management entity device obtains a load message of the enhanced mobile switching center device from the processing message, and subsequently initiates a service to the enhanced mobile switching center device according to the load message.

The processing message in this embodiment includes the message obtained by processing the service message after the mobile switching center device receives the service message initiated by the mobility management entity device, and it should be understood that the processing message may be one or more response messages. And/or release the message. For example, the service message in this embodiment may include at least one of a handover request message and a path detection request message. In order to improve the real-time performance of the feedback, the handover request message and the path detection request message may be selected. In addition, it should be understood that the mobility management entity device passes the Sv interface to the enhanced mobile switching center according to the protocol. The message header of the message sent by the device includes the version information of the local end; after receiving the message, the enhanced mobile switching center device can match with the current version information of the device to determine whether it is supported, and if not, feedback to the mobile management entity device. The version does not support notification messages.

In the foregoing step 503, the process of the mobile management entity device determining to initiate a service to the enhanced mobile switching center device according to the load message in the processing message includes:

After the mobile management entity device determines that the service is no longer initiated to the enhanced mobile switching center device, include:

In addition, in order to further improve the reliability of the determination result, the mobility management entity device in this embodiment determines that the enhanced mobile switching center device is less than the unavailable threshold, and determines that the enhanced mobile switching center device is currently available, and further includes the following determining process:

Embodiment 4:

Referring to FIG. 6, the embodiment provides a communication system including an enhanced mobile switching center device 2 and a mobility management entity device 1; the mobility management entity device 1 is configured to send a service message to the enhanced mobile switching center device 2 through the Sv interface. The enhanced mobile switching center device 2 is configured to receive the service message sent by the enhanced mobile switching center device, insert its own current load message into the processing message obtained by processing the service message, and feed back to the mobile management entity device 1 through the Sv interface; The mobility management entity device 1 is further arranged to receive the processing message fed back by the enhanced mobile switching center device 2, obtain the load message of the enhanced mobile switching center device 2 from the processing message, and subsequently initiate a decision to the enhanced mobile switching center device 2 according to the load message decision business.

Referring to FIG. 7, the enhanced mobile switching center device 2 includes a service receiving module 21, an inserting module 22, and a feedback module 23. Referring to FIG. 8, the mobile management entity device 1 includes a service initiating module 11, The receiving module 12 and the control module 13 are:

The service receiving module 21 is configured to receive a service message sent by the service initiating module 11 through the Sv interface.

The inserting module 22 is configured to insert the current load message of the enhanced mobile switching center device into the processing message obtained by processing the service message;

The feedback module 23 is configured to feed the processing message to the receiving module 12 through the Sv interface;

The service initiating module 11 is configured to send a service message to the service receiving module 21 through the Sv interface.

The receiving module 12 is configured to receive a processing message fed back by the feedback module 23 through the Sv interface;

The control module 13 is arranged to obtain a load message from the processing message, and to determine subsequent services initiated to the enhanced mobile switching center device based on the load message.

The processing message in this embodiment includes the message obtained by processing the service message after the mobile switching center device 2 receives the service message initiated by the mobility management entity device 1, and it should be understood that the processing message may be one or more types. Respond to messages and/or release messages. For example, the service message in this embodiment may include at least one of a handover request message and a path detection request message. In order to improve the real-time performance of the feedback, the handover request message and the path detection request message may be selected. In addition, it should be understood that, according to the protocol, the message header of the message sent by the mobility management entity device 1 to the enhanced mobile switching center device 2 via the Sv interface includes the version information of the local end; the enhanced mobile switching center device 2 receives the message. Then, it can be matched with its current version information to determine whether it is supported. If it is not supported, the version of the mobile management entity device does not support the notification message.

The handover request message in this embodiment may include a PS (Packet Switch) domain to CS domain handover request message; when the service message includes a handover request message, after the enhanced mobile switching center device 2 receives the handover request message, the pair The processing message obtained by processing the handover request message may be a handover response message (SRVCC PS to CS Response), a handover cancellation notification message (SRVCC PS to CS Cancel Notification), a handover cancellation completion message (SRVCC PS to CS) The Cancel Acknowledge, the version does not support the message (Version Not Supported message); that is, the processing message in this embodiment may include at least one of a handover response message, a handover cancellation notification message, a handover cancellation completion message, and a version non-support notification message. The insertion module 22 may, after inserting the load message into at least one of the handover response message, the handover cancellation notification message, the handover cancellation completion message, and the version non-support notification message, feed back to the mobility management entity device 1.

When the service message in this embodiment includes the path detection request message, the enhanced mobile switching center device 2 may process the path detection request message, and may include an Echo Response message and a version not supported notification. At least one of a Version Not Supported message. That is, the insertion module 22 may feed back the load message to the mobility management entity device 1 after inserting the load message into at least one of the path detection response message and the version not supporting the notification message.

In addition, in the present embodiment, when the mobility management entity device 1 transmits a handover request message (PS domain to CS domain handover request message) to the enhanced mobile switching center device 2, the enhanced mobile switching center device 2 is further configured to receive the handover. After requesting the message, when the current load is allowed to process the handover request message, it is determined whether the user who initiated the handover request message has local user data before, if not, the other enhanced mobile switching center device in the pool of the notification pool deletes the The user data of the user, and after the notification of the completion of the deletion, the subsequent switching process of the handover request message is performed. This avoids repeated camping of the same user on multiple enhanced mobile switching center devices. In this embodiment, the enhanced mobile switching center device 2 can continue the handover process after instructing the other eMSCs to delete the duplicate user data by using the EMS (Element Management Systems) in the pool.

In this embodiment, the control module 13 is configured to implement a process of initiating a service to the enhanced mobile switching center device according to the load message decision in the processing message in the following manner:

The control module 13 determines, according to the extracted load message, that the current load of the enhanced mobile switching center device is greater than or equal to the unavailable threshold, indicating that the current load of the enhanced mobile switching center device is unavailable, and starting the unavailable detection period (for example, 2 minutes), determining that Whether the service initiated to the enhanced mobile switching center device fails in the unavailable detection period, and whether the load of the enhanced mobile switching center device is always greater than or equal to the failure according to the load message in the processing message fed back by the enhanced mobile switching center device. With a threshold, if so, no more traffic is initiated to the enhanced mobile switching center device.

The control module 13 is further configured to: after determining that the service is no longer initiated to the enhanced mobile switching center device, send a path detection request message to the enhanced mobile switching center device to shorten the detection period; and feedback according to the feedback module 23 of the enhanced mobile switching center device 2 The load message included in the path detection response message determines whether the current load of the enhanced mobile switching center device is less than an unavailable threshold, and if so, determines that the enhanced mobile switching center device is currently available.

In addition, in order to further improve the reliability of the determination result, the control module 13 in this embodiment is further configured to: after determining that the current load of the enhanced mobile switching center device is less than the unavailable threshold, and determining that the enhanced mobile switching center device is currently available, starting the available detection. The period (the available detection period is preferably set to be less than the unavailable detection period, for example, 1 minute), during which it is determined whether the load of the enhanced mobile switching center device is always less than the unavailable threshold, and if so, it is determined that the enhanced mobile switching center device is currently Available, subsequent new services can be initiated to the enhanced mobile switching center device.

It should be understood that the foregoing solution provided by this embodiment is applicable to the control of a single enhanced mobile switching center device load, and also to a plurality of enhanced mobile switching center devices whose circuit domain side is a pool. The enhanced mobile switching center device in this embodiment can update its own load situation in real time by itself, and the manner of counting its own load can be adopted in any manner. Of course, the load condition of the enhanced mobile switching center device can be statistically collected by other devices. It is then fed back to the enhanced mobile switching center device.

The unavailable threshold in this embodiment may be set to enhance the maximum load supported by the mobile switching center device, for example, to increase the ratio of the total number of Srvcc service users that the mobile switching center device can handle, for example, 100%; The reservation amount, for example, is set to any one of 70% to 90%. Of course, other rules can be used according to actual needs.

Embodiment 5:

For a better understanding of the present invention, the present invention will be further exemplified in the following with reference to several specific application scenarios.

In this embodiment, the load message includes the occupied user ratio POS, that is, the current load situation of the enhanced mobile switching center device is represented by the occupied user ratio POS. The message and parameters of the Sv interface are defined in the protocol 29.280. The following table is newly defined as the Percent of Occupied Subscribers, which is referred to as Table POS. The value is the current Srvcc access user. The ratio of the total number of Srvcc service users that the total eMSC can handle, the value It is 0-100, which stands for (0%-100%).

Table 1

信元值Cell value	信元名称Cell name	长度length
6363	Percent of Occupied Subscribers，已占用用户比率Percent of Occupied Subscribers, Occupied User Ratio	一个字节One byte

The above parameter POS is inserted in the following message, and the load condition of the strong mobile switching center device is fed back to the mobility management entity device.

Switch response message (SRVCC PS to CS Response);

Switch cancellation notification message (SRVCC PS to CS Cancel Notification);

Switch cancellation completion message (SRVCC PS to CS Cancel Acknowledge);

Path detection response message (Echo Response message);

The version does not support the Version Not Supported message.

The following is an example of several specific application scenarios.

Example 1:

The normal Srvcc call load control, for example, the maximum user capacity of the two eMSC devices in the pool to process the Srvcc service is 1 million, and the current users are currently processing 600,000 and 800,000 respectively, that is, the occupied user ratios are 60 and 80 respectively; The process is shown in Figure 9, including:

Step 701: The first enhanced mobile switching center device and the second enhanced mobile switching center device receive the Srvcc handover request.

Step 702: After the service is normally processed, the first enhanced mobile switching center device and the second enhanced mobile switching center device feed back the handover response message to the mobility management entity device, where the POS is notified to the mobility management entity device;

Step 703: When the mobile management entity device initiates a new service, the service is preferentially sent to the first enhanced mobile switching center device with low traffic load to achieve load balancing.

Example 2:

Abnormal Srvcc call load control, the first enhanced mobile switching center device can access the Srvcc user capacity to be fully occupied, that is, the POS is 100; the control process is shown in FIG. 10, including:

Step 801: The mobility management entity device initiates Srvcc to the first enhanced mobile switching center device. Switching request;

Step 802: The mobility management entity device receives a handover cancellation notification message fed back by the first enhanced mobile switching center device, where the load message included in the handover cancellation notification message indicates that the first enhanced mobile switching center device can no longer process the new Srvcc service. Setting an unavailable detection timer of the first enhanced mobile switching center device (for example, setting the undetectable period Tn to 2 minutes);

Step 803: The mobile management entity device detects that all the services to the first enhanced mobile switching center device fail in the unavailable detection period Tn, and the indicated POS is 100, the first enhanced mobile switching center device is temporarily unable to process. The service no longer initiates new services to the first enhanced mobile switching center device;

Step 804: The mobility management entity device initiates link detection to the first enhanced mobile switching center device, shortening the original detection period;

Step 805: If it is detected that the POS value of the first enhanced mobile switching center device is lower than 100, the available detection period Ty is set (the recommended duration is 1 minute);

Step 806: It is determined that the POS value of the first enhanced mobile switching center device is continuously decreased in the Ty period, and then determining that the first enhanced mobile switching center device has a reduced traffic load;

Step 807: A new service may be initiated to the first enhanced mobile switching center device according to the load situation.

Example three:

The example uses the role of path test in load control, such as the first enhanced mobile switching center device and the second enhanced mobile switching center device occupancy ratio POS in the pool are 60 and 80 respectively; the control process is as shown in FIG. :

Step 901: The first enhanced mobile switching center device and the second enhanced mobile switching center device receive a periodic Sv interface path detection request of the mobility management entity device.

Step 902: The first enhanced mobile switching center device and the second enhanced mobile switching center device feed back a path detection response message to the mobility management entity device, where the respective POS is notified to the mobility management entity device;

Step 903: When the mobile management entity device initiates a new service, the service is preferentially sent to the first enhanced mobile switching center device with a low traffic load to achieve load balancing.

Example four:

It is assumed that there are two enhanced mobile switching center devices in the pool and the second enhanced mobile switching center device. The user 1 user data is on the first enhanced mobile switching center device in the pool. For the load control process, please refer to As shown in Figure 12, it includes:

Step 1001: The second enhanced mobile switching center device receives the Srvcc service switching request of the user 1;

Step 1002: The second enhanced mobile switching center device finds that there is no user 1 data, and then deletes the user 1 user data in the full pool from the EMS.

Step 1003: The EMS initiates deletion of the user 1 user data to the other enhanced mobile switching center devices in the pool;

Step 1004: After receiving the indication of the EMS, the first enhanced mobile switching center device deletes the local user data of the user 1 and notifies the HLR (Home location register) and the EMS user data to delete, if there is no user data directly EMS deletion can be completed;

Step 1005: After receiving the deletion completion notification of all the enhanced mobile switching center devices, the EMS notifies the second enhanced mobile switching center device that the deletion is completed.

Step 1006: Continue the subsequent process of performing the handover normally.

Embodiments of the present invention also provide a computer readable storage medium storing computer executable instructions for performing any of the methods described above.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct related hardware, such as a processor, which may be stored in a computer readable storage medium, such as a read only memory, disk or optical disk. Wait. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program in a storage and a memory by a processor. / instruction to achieve its corresponding function. The invention is not limited to any specific form of combination of hardware and software.

The above is a further detailed description of the present invention in connection with the specific embodiments, and the specific embodiments of the present invention are not limited to the description. For those skilled in the art to which the present invention pertains, a number of simple deductions may be made or without departing from the inventive concept. Substitutions should be considered as belonging to the scope of protection of the present invention.

Industrial applicability

The above technical solution avoids the service storm on the Sv interface between the eMSC device and the MME device, avoids the load from continuing to increase or the service success rate decreases, thereby realizing the MME device dynamically sensing the load on the eMSC device side and improving the load control. effect.

Claims

A load reporting method includes:

The enhanced mobile switching center device receives the service message sent by the mobility management entity device through the Sv interface;

The enhanced mobile switching center device inserts its current load message into the processing message obtained by processing the service message;

The enhanced mobile switching center device feeds back the processing message to the mobility management entity device through the Sv interface.
A load control method comprising:

The mobility management entity device sends a service message to the enhanced mobile switching center device through the Sv interface;

Receiving, by the mobility management entity device, a processing message that is sent by the enhanced mobile switching center device by using the Sv interface, where the processing message includes a current load message of the enhanced mobile switching center device;

And the mobility management entity device obtains the load message from the processing message, and determines, according to the load message, a service that is subsequently initiated to the enhanced mobile switching center device.
A load control method comprising:

The mobility management entity device sends a service message to the enhanced mobile switching center device through the Sv interface;

The enhanced mobile switching center device inserts its current load message into a processing message obtained by processing the service message;

The enhanced mobile switching center device feeds back the processing message to the mobility management entity device through the Sv interface;

And the mobility management entity device obtains the load message of the enhanced mobile switching center device from the processing message, and subsequently initiates a service to the enhanced mobile switching center device according to the load message.
The load control method according to claim 3, wherein the service message includes at least one of a handover request message and a path detection request message.
The load control method according to claim 4, wherein, when the service message includes a handover request message, the processing message includes at least a handover response message, a handover cancellation notification message, a handover cancellation completion message, and a version non-support notification message. One type;

When the service message includes a path detection request message, the processing message includes at least one of a path detection response message and a version non-support notification message.
The load control method according to claim 4, further comprising:

When the service message includes the handover request message, after the enhanced mobile switching center receives the handover request message, it determines whether the user data of the user who initiated the handover request message exists locally before the current load is allowed to process the handover request message. If not, the other enhanced mobile switching centers in the notification pool group delete the user data of the user, and execute the switching process subsequent to the switching request message after receiving the deletion completion notification.
The load control method according to any one of claims 3 to 6, wherein the mobile management entity device decides to subsequently initiate a service to the enhanced mobile switching center device according to the load message decision:

And determining, by the mobility management entity device, that the current load of the enhanced mobile switching center device is greater than or equal to an unavailable threshold according to the load message, starting an unavailable detection period, and determining to detect the enhanced mobile switching in the unavailable detection period. Whether the service initiated by the central device fails, and whether the load of the enhanced mobile switching center device is always greater than or equal to the unavailable threshold according to the load message in the processing message fed back by the enhanced mobile switching center device, and if so, no longer Initiating a service to the enhanced mobile switching center device.
The load control method according to claim 7, further comprising:

After the mobility management entity device determines that the service is no longer initiated to the enhanced mobile switching center device,

Sending a path detection request message to the enhanced mobile switching center device, and determining, according to the load message included in the path detection response message fed back by the enhanced mobile switching center device, whether the current load of the enhanced mobile switching center device is less than the unavailable threshold If so, it is determined that the enhanced mobile switching center device is currently available.
The load control method according to claim 8, further comprising:

After the mobile management entity device determines that the current load of the enhanced mobile switching center device is less than the unavailable threshold, before determining that the enhanced mobile switching center device is currently available,

An available detection period is initiated during which it is determined whether the load of the enhanced mobile switching center device is always less than the unavailable threshold, and if so, it is determined that the enhanced mobile switching center device is currently available.
An enhanced mobile switching center device comprising:

a service receiving module, configured to receive a service message sent by the mobility management entity device through the Sv interface;

Inserting a module, configured to insert a current load message of the enhanced mobile switching center device into a processing message obtained by processing the service message;

The feedback module is configured to feed the processing message to the mobility management entity device through the Sv interface.
A mobile management entity device comprising:

a service initiation module, configured to send a service message to the enhanced mobile switching center device through the Sv interface;

a receiving module, configured to receive a processing message that is sent by the enhanced mobile switching center device by using the Sv interface, where the processing message includes a current load message of the enhanced mobile switching center device;

And a control module, configured to obtain the load message from the processing message, and determine, according to the load message, a service that is subsequently initiated to the enhanced mobile switching center device.
A communication system includes an enhanced mobile switching center device and a mobility management entity device; the enhanced mobile switching center device includes a service receiving module, an insertion module, and a feedback module; the mobility management entity device includes a service initiation module, a receiving module, and a control Module

The service receiving module is configured to receive a service message sent by the service initiation module by using an Sv interface;

The insertion module is configured to insert a current load message of the enhanced mobile switching center device into a processing message obtained by processing the service message;

The feedback module is configured to feed the processing message to the receiving module through the Sv interface;

The service initiating module is configured to send the service message to the service receiving module by using an Sv interface;

The receiving module is configured to receive a processing message that is fed back by the feedback module by using the Sv interface;

The control module is configured to obtain the load message from the processing message, and determine, according to the load message, a service that is subsequently initiated to the enhanced mobile switching center device.
The communication system of claim 12, wherein the service message comprises at least one of a handover request message and a path detection request message.
The communication system according to claim 13, wherein when the service message includes a handover request message, the processing message includes at least one of a handover response message, a handover cancellation notification message, a handover cancellation completion message, and a version non-support notification message. Species

When the service message includes a path detection request message, the processing message includes at least one of a path detection response message and a version non-support notification message.