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CN108833441B - Method and system for releasing temporary termination point - Google Patents

Method and system for releasing temporary termination point Download PDF

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Publication number
CN108833441B
CN108833441B CN201810813368.8A CN201810813368A CN108833441B CN 108833441 B CN108833441 B CN 108833441B CN 201810813368 A CN201810813368 A CN 201810813368A CN 108833441 B CN108833441 B CN 108833441B
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media gateway
termination point
received
temporary termination
timer
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CN108833441A (en
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张余
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/32—Release of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/38—Connection release triggered by timers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0876—Network utilisation, e.g. volume of load or congestion level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Multimedia (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

本发明公开了一种临时终结点的释放方法和系统。该方法包括：媒体网关在开始收发RTP流时，启动定时器；所述媒体网关统计收发RTP流的数量；所述媒体网关当定时器超时后，判断统计出的收发RTP流的数量等于0或者大于0；所述媒体网关若判断出收发RTP流的数量等于0时，确定出临时终结点出现异常；所述媒体网关释放所述临时终结点。本发明实现了对临时终结点的释放。

Figure 201810813368

The invention discloses a method and system for releasing a temporary termination point. The method includes: when the media gateway starts to send and receive RTP streams, start a timer; the media gateway counts the number of RTP streams sent and received; when the timer expires, the media gateway determines that the counted number of RTP streams sent and received is equal to 0 or greater than 0; if the media gateway determines that the number of RTP streams sent and received is equal to 0, it is determined that the temporary termination point is abnormal; the media gateway releases the temporary termination point. The present invention realizes the release of the temporary termination point.

Figure 201810813368

Description

Method and system for releasing temporary termination point
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and a system for releasing a temporary destination node.
Background
The H.248 protocol is one of Media Gateway Controller (MGC)/Soft Switch (SS) and Media Gateway (MG) interface protocols in the NGN Soft Switch network; MGC/SS communicates with MG through H.248 protocol, and completes control of call state related to media channel connection control in MG. The connection model defined by the h.248 protocol includes two main concepts of a termination and a context, wherein parameters such as media stream parameters, modem and bearer capability are encapsulated in the termination, and the termination is a media gateway logical entity and can send or receive one or more media streams; a context is a connection between a set of endpoints. The termination points may be divided into physical termination points and temporary termination points, wherein a physical termination point may represent a physical entity, e.g., a Time Division Multiplex (TDM) channel may serve as a physical termination point; the temporary termination point may represent a temporary information flow, for example, a Real-time Transport Protocol (RTP) flow for carrying voice, data, and video signals or various mixed signals. MGC/SS and MG communicate through protocol message defined by H.248 protocol to complete addition or release of terminal. In practical application, protocol messages defined by the h.248 protocol are transmitted on a User Datagram Protocol (UDP), but unreliable UDP transmission may cause that the protocol messages defined by the h.248 protocol cannot reach a destination end in time or are lost, wherein if the lost is a release temporary termination command, a temporary termination corresponding to the release temporary termination command cannot be released; if the temporary termination command cannot be timely reached or the response message for creating the temporary termination command is lost, the MGC/SS retransmits the temporary termination command, if the temporary termination command retransmitted by the MGC/SS is received, the MG receives the temporary termination command for the first time, and the created temporary termination transaction is overtime and deleted, the retransmitted temporary termination command for creating the temporary termination command is executed again, so that the MG adds two temporary terminations, but the MGC/SS considers that the MG only successfully adds one temporary termination, and only issues a temporary termination release command for the temporary termination which is considered to be successfully added, so that the other temporary termination cannot be released.
Disclosure of Invention
The invention provides a method and a system for releasing a temporary destination node, which are used for realizing the release of the temporary destination node.
In order to achieve the above object, the present invention provides a method for releasing a temporary termination point, including:
when the media gateway starts to receive and transmit RTP stream, a timer is started;
the media gateway counts the number of the RTP streams;
after the timer is overtime, the media gateway judges that the counted number of the transmitting and receiving RTP streams is equal to 0 or more than 0;
if the media gateway judges that the number of the RTP streams is equal to 0, determining that the temporary destination node is abnormal;
and the media gateway releases the temporary termination point.
Optionally, before the releasing the temporary termination point of the context information, the media gateway further includes:
the media gateway sends query information to a media gateway controller, wherein the query information comprises context information of a temporary termination point;
the media gateway controller inquires whether the context information is stored;
and if the media gateway controller inquires that the context information is not stored, returning context error information to the media gateway.
Optionally, if the media gateway determines that the number of the RTP streams to be received and transmitted is greater than 0, the media gateway starts a timer and continues to perform the step of counting the number of the RTP streams to be received and transmitted by the media gateway.
Optionally, when starting to receive and send an RTP stream, the media gateway further includes, before starting the timer:
the media gateway counts the call duration of all calls in a set time period in advance, and determines the minimum call duration from the call durations of all calls;
and the media gateway sets the minimum call duration as the duration of the timer.
Optionally, if the media gateway determines that the number of the RTP streams sent and received is equal to 0, the method further includes, after determining that the temporary destination node is abnormal:
the media gateway inquires whether the call ending information sent by the media gateway controller is received;
if the media gateway inquires that the call ending information sent by the media gateway controller is not received, the step that the media gateway sends inquiry information to the media gateway controller is continuously executed;
and if the media gateway inquires that the call ending information sent by the media gateway controller is received, continuing to execute the step of releasing the temporary destination node by the media gateway.
To achieve the above object, the present invention provides a system for releasing a temporary termination point, including: a media gateway;
the media gateway is used for starting a timer when starting to receive and transmit RTP stream; counting the number of the RTP streams; when the timer is overtime, judging that the counted number of the transmitting and receiving RTP streams is equal to 0 or greater than 0; if the number of the RTP streams is judged to be equal to 0, determining that the temporary termination point is abnormal; releasing the temporary termination point.
Optionally, the method further comprises:
the media gateway is also used for sending query information to the media gateway controller, wherein the query information comprises the context information of the temporary termination point;
the media gateway controller is used for inquiring whether the context information is stored; and if the context information is not stored, returning context error information to the media gateway.
Optionally, the media gateway is further configured to start a timer if it is determined that the number of the RTP streams to be received and sent is greater than 0, and continue to perform the step of counting the number of the RTP streams to be received and sent by the media gateway.
Optionally, the media gateway is further configured to count call durations of all calls within a set time period in advance, and determine a minimum call duration from the call durations of all calls; and setting the minimum call duration as the duration of the timer.
Optionally, the media gateway is further configured to query whether call end information sent by the media gateway controller is received; if the call end information sent by the media gateway controller is not received, the step of sending the query information to the media gateway controller is continuously executed; and if the call ending information sent by the media gateway controller is inquired and received, continuing to execute the step of releasing the temporary destination node.
The invention has the following beneficial effects:
in the technical scheme of the method and the system for releasing the temporary destination provided by the invention, after the timer is overtime, if the number of the RTP streams is judged to be equal to 0, the media gateway determines that the temporary destination is abnormal and releases the temporary destination, so that the release of the temporary destination is realized.
Drawings
Fig. 1 is a flowchart of a method for releasing a temporary termination point according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for releasing a temporary termination point according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a release system of a temporary termination point according to a third embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the method and system for releasing the temporary termination point provided by the present invention are described in detail below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a method for releasing a temporary termination point according to an embodiment of the present invention, as shown in fig. 1, the method includes:
step 101, when the media gateway starts to receive and transmit the RTP stream, a timer is started.
Step 102, the media gateway counts the number of the RTP streams.
Step 103, after the timer is overtime, the media gateway judges that the counted number of the transmitting and receiving RTP streams is equal to 0 or larger than 0, if so, the step 104 is executed; if so, go to step 106.
And step 104, the media gateway determines that the temporary termination point is abnormal.
Step 105, the media gateway releases the temporary termination point, and the process is ended.
Step 106, the media gateway starts the timer and continues to execute step 101.
In the technical scheme of the method for releasing the temporary destination node provided in this embodiment, after the timer expires, if it is determined that the number of the RTP streams received and sent is equal to 0, the media gateway determines that the temporary destination node is abnormal, and releases the temporary destination node.
Fig. 2 is a flowchart of a method for releasing a temporary termination point according to a second embodiment of the present invention, as shown in fig. 2, the method includes:
step 201, the media gateway counts the call duration of all calls within a set time period in advance, and determines the minimum call duration from the call durations of all calls.
In this embodiment, the set time period may be set as needed.
Step 202, the media gateway sets the minimum call duration as the duration of the timer.
Step 203, the media gateway starts a timer when starting to transmit and receive the RTP stream.
When a call is established, the media gateway starts to receive and transmit RTP stream. Wherein, the receiving and sending the RTP stream comprises receiving the RTP stream and/or sending the RTP stream. A timer is started when the media gateway starts receiving or sending RTP streams.
Step 204, the media gateway counts the number of the RTP streams to be transmitted and received.
In this embodiment, the number of transceiving RTP streams is equal to the sum of the number of receiving RTP streams and the number of transmitting RTP streams. The media gateway starts counting the number of the RTP streams from the start of the timer until the timer expires.
Step 205, after the timer is overtime, the media gateway judges that the counted number of the transmitting and receiving RTP streams is equal to 0 or greater than 0, if the counted number of the transmitting and receiving RTP streams is greater than 0, the step 206 is executed; if equal to 0, go to step 207.
When the media gateway judges that the counted number of the RTP streams for receiving and sending is equal to 0, the media gateway indicates that the media gateway does not send the RTP streams and does not receive the RTP streams during the working period of the timer.
And when the media gateway judges that the counted number of the RTP streams for receiving and transmitting is greater than 0, the media gateway is indicated to transmit the RTP streams and/or receive the RTP streams during the working period of the timer.
Step 206, the media gateway starts a timer and continues to execute step 204.
And when the counted number of the transmitting and receiving RTP streams is judged to be more than 0, the media gateway restarts the timer.
Step 207, the media gateway determines that the temporary termination point is abnormal.
Step 208, the media gateway queries whether the call ending information sent by the media gateway controller is received, if not, step 209 is executed; if yes, go to step 212.
When the call is over, the media gateway controller will send the call over information to the media gateway to inform the media gateway of the call over. Therefore, the media gateway can inquire whether the call ending information sent by the media gateway controller is received, when the media gateway inquires that the call ending information is received, the call ending is indicated, and when the media gateway inquires that the call ending information is not received, the call ending is indicated.
Step 209, the media gateway sends query information to the media gateway controller, where the query information includes context information where the temporary termination point is located.
Step 210, the media gateway controller inquires whether the context information is stored, if not, step 211 is executed; if yes, go to step 213.
The media gateway inquires whether the context information stored by the media gateway is consistent with the context information in the received inquiry information, if so, the media gateway controller is indicated to store the context information; if not, it indicates that the media gateway controller does not store the context information.
Step 211, the media gateway controller returns the context error information to the media gateway.
Step 212, the media gateway releases the temporary termination point, and the process ends.
Step 213, the media gateway controller returns the context normal information to the media gateway, and continues to execute step 206.
In the technical scheme of the method for releasing the temporary destination node provided in this embodiment, after the timer expires, if it is determined that the number of the RTP streams received and sent is equal to 0, the media gateway determines that the temporary destination node is abnormal, and releases the temporary destination node.
Fig. 3 is a schematic structural diagram of a release system of a temporary termination point according to a third embodiment of the present invention, as shown in fig. 3, the system includes: a media gateway 1.
The media gateway 1 is used for starting a timer when starting to receive and transmit RTP stream; counting the number of the RTP streams; when the timer is overtime, judging that the counted number of the transmitting and receiving RTP streams is equal to 0 or greater than 0; if the number of the RTP streams is judged to be equal to 0, determining that the temporary termination point is abnormal; releasing the temporary termination point.
Further, the system further comprises: a media gateway controller 2. The media gateway 1 is further configured to send query information to the media gateway controller, where the query information includes context information where the temporary termination point is located; the media gateway controller 2 is used for inquiring whether the context information is stored; and if the context information is not stored, returning the context error information to the media gateway 1.
Further, the media gateway 1 is further configured to start a timer if it is determined that the number of the RTP streams to be received and sent is greater than 0, and continue to perform the step of counting the number of the RTP streams to be received and sent by the media gateway.
Further, the media gateway 1 is further configured to count the call durations of all calls in a preset time period in advance, and determine a minimum call duration from the call durations of all calls; and setting the minimum call duration as the duration of the timer.
Further, the media gateway 1 is further configured to query whether call ending information sent by the media gateway controller is received; if the call end information sent by the media gateway controller is not received, the step of sending the query information to the media gateway controller is continuously executed; if the call end information sent by the media gateway controller is inquired and received, the step of releasing the temporary termination point of the context information is continuously executed.
The system for releasing a temporary destination provided in this embodiment is used to implement the method for releasing a temporary destination provided in the first embodiment or the second embodiment.
In the technical scheme of the system for releasing a temporary destination provided in this embodiment, after the timer expires, if it is determined that the number of the RTP streams received and sent is equal to 0, the media gateway determines that the temporary destination is abnormal, and releases the temporary destination.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims (7)

1.一种临时终结点的释放方法，其特征在于，包括：1. the release method of a temporary termination point, is characterized in that, comprises: 媒体网关在开始收发RTP流时，启动定时器；When the media gateway starts to send and receive the RTP stream, it starts the timer; 所述媒体网关统计收发RTP流的数量；The media gateway counts the number of RTP streams sent and received; 所述媒体网关当定时器超时后，判断统计出的收发RTP流的数量等于0或者大于0；After the timer expires, the media gateway determines that the counted number of RTP streams sent and received is equal to 0 or greater than 0; 所述媒体网关若判断出收发RTP流的数量等于0时，确定出临时终结点出现异常；If the media gateway determines that the number of RTP streams sent and received is equal to 0, it is determined that the temporary termination point is abnormal; 所述媒体网关查询是否接收到媒体网关控制器发送的通话结束信息；The media gateway inquires whether the call end information sent by the media gateway controller is received; 所述媒体网关若查询出未接收到媒体网关控制器发送的通话结束信息时，所述媒体网关向媒体网关控制器发送查询信息，所述查询信息包括临时终结点所在的上下文信息，以供所述媒体网关控制器查询是否存储有所述上下文信息；If the media gateway finds out that it has not received the call end information sent by the media gateway controller, the media gateway sends query information to the media gateway controller, and the query information includes the context information where the temporary termination point is located for all The media gateway controller queries whether the context information is stored; 所述媒体网关接收所述媒体网关控制器在查询出未存储有所述上下文信息时向所述媒体网关返回的上下文错误信息；receiving, by the media gateway, the context error information returned by the media gateway controller to the media gateway when the media gateway controller finds out that the context information is not stored; 所述媒体网关释放所述临时终结点。The media gateway releases the temporary termination point. 2.根据权利要求1所述的临时终结点的释放方法，其特征在于，所述媒体网关若判断出收发RTP流的数量大于0时，启动定时器，并继续执行所述媒体网关统计收发RTP流的数量的步骤。2. the release method of temporary termination point according to claim 1 is characterized in that, if described media gateway judges that the quantity of sending and receiving RTP flow is greater than 0, start timer, and continue to carry out described media gateway statistics sending and receiving RTP The number of steps in the stream. 3.根据权利要求1所述的临时终结点的释放方法，其特征在于，所述媒体网关在开始收发RTP流时，启动定时器之前还包括：3. the release method of temporary termination point according to claim 1, is characterized in that, when described media gateway starts to send and receive RTP flow, also comprises before starting timer: 所述媒体网关预先统计设定时间段内所有通话的通话时长，并从所有通话的通话时长中确定出最小的通话时长；The media gateway pre-calculates the call durations of all calls within the set time period, and determines the minimum call duration from the call durations of all calls; 所述媒体网关将最小的通话时长设置为定时器的时长。The media gateway sets the minimum call duration as the duration of the timer. 4.根据权利要求1所述的临时终结点的释放方法，其特征在于，还包括：4. the release method of temporary termination point according to claim 1, is characterized in that, also comprises: 所述媒体网关若查询出接收到媒体网关控制器发送的通话结束信息时，继续执行所述媒体网关释放所述临时终结点的步骤。If the media gateway finds out that the call end information sent by the media gateway controller is received, the media gateway continues to perform the step of releasing the temporary termination point by the media gateway. 5.一种临时终结点的释放系统，其特征在于，包括：媒体网关；5. the release system of a temporary termination point, is characterized in that, comprises: media gateway; 所述媒体网关，用于在开始收发RTP流时，启动定时器；统计收发RTP流的数量；当定时器超时后，判断统计出的收发RTP流的数量等于0或者大于0；若判断出收发RTP流的数量等于0时，确定出临时终结点出现异常；释放所述临时终结点；所述媒体网关还用于向媒体网关控制器发送查询信息，所述查询信息包括临时终结点所在的上下文信息；The media gateway is used to start a timer when starting to send and receive RTP streams; count the number of RTP streams sent and received; when the timer expires, determine that the counted number of RTP streams sent and received is equal to 0 or greater than 0; When the number of RTP streams is equal to 0, it is determined that the temporary termination point is abnormal; the temporary termination point is released; the media gateway is further configured to send query information to the media gateway controller, where the query information includes the context where the temporary termination point is located information; 所述释放系统还包括：媒体网关控制器；The release system also includes: a media gateway controller; 所述媒体网关控制器，用于查询是否存储有所述上下文信息；若查询出未存储有所述上下文信息时，向所述媒体网关返回上下文错误信息；The media gateway controller is configured to query whether the context information is stored; if the context information is not stored in the query, return context error information to the media gateway; 所述媒体网关还用于查询是否接收到媒体网关控制器发送的通话结束信息；若查询出未接收到媒体网关控制器发送的通话结束信息时，继续执行所述向媒体网关控制器发送查询信息的步骤；若查询出接收到媒体网关控制器发送的通话结束信息时，继续执行所述释放所述临时终结点的步骤。The media gateway is also used to query whether the call end information sent by the media gateway controller is received; if it is found that the call end information sent by the media gateway controller is not received, continue to execute the process of sending the query information to the media gateway controller. If it is found that the call end information sent by the media gateway controller is received, the step of releasing the temporary termination point is continued. 6.根据权利要求5所述的临时终结点的释放系统，其特征在于，所述媒体网关还用于若判断出收发RTP流的数量大于0时，启动定时器，并继续执行所述媒体网关统计收发RTP流的数量的步骤。6. the release system of temporary termination point according to claim 5, is characterized in that, described media gateway is also used for if judged that the quantity of sending and receiving RTP flow is greater than 0, start timer, and continue to carry out described media gateway Steps to count the number of RTP streams sent and received. 7.根据权利要求5所述的临时终结点的释放系统，其特征在于，所述媒体网关还用于预先统计设定时间段内所有通话的通话时长，并从所有通话的通话时长中确定出最小的通话时长；将最小的通话时长设置为定时器的时长。7. the release system of temporary termination point according to claim 5, is characterized in that, described media gateway is also used for the call duration of all calls in pre-statistics set time period, and determines from the call duration of all calls Minimum talk duration; set the minimum talk duration as the duration of the timer.
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CN101521669A (en) * 2009-03-03 2009-09-02 中兴通讯股份有限公司 Method and device for releasing temporary destination node of H.248 protocol

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