WO2012167620A1 - Procédé et système permettant de limiter les échecs d'appel d'un service de tonalités de retour d'appel personnalisées - Google Patents

Procédé et système permettant de limiter les échecs d'appel d'un service de tonalités de retour d'appel personnalisées Download PDF

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Publication number
WO2012167620A1
WO2012167620A1 PCT/CN2012/070102 CN2012070102W WO2012167620A1 WO 2012167620 A1 WO2012167620 A1 WO 2012167620A1 CN 2012070102 W CN2012070102 W CN 2012070102W WO 2012167620 A1 WO2012167620 A1 WO 2012167620A1
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Prior art keywords
call
ratio
call data
shared memory
calling
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PCT/CN2012/070102
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English (en)
Chinese (zh)
Inventor
贺镇海
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中兴通讯股份有限公司
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Publication of WO2012167620A1 publication Critical patent/WO2012167620A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/42017—Customized ring-back tones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a method and system for reducing a call failure of a CRBT service after an abnormality of a broadband ring tones primary device service is switched to a standby device.
  • the Service Control Point (SCP) of the intelligent network is built in a fault-tolerant manner.
  • the main SCP is down, the network is disconnected, the database is abnormal, and the abnormal process of the intelligent network platform is detected by the dual-machine software, and the command is issued by the standby SCP.
  • SCP Service Control Point
  • the length of the switching process depends on the setting of the heartbeat detection of the dual-machine, the hardware configuration level of the standby device, the network bandwidth, and the startup process of the standby intelligent network service. If the traffic peaks and the switching time is too long, it may cause a large number of call loss and cause more user complaints.
  • the broadband ring back tone service platform and the switching side and the playback device pass a session layer signaling control protocol (SIP), a bearer independent call control protocol (BICC), and a media gateway.
  • SIP session layer signaling control protocol
  • BICC bearer independent call control protocol
  • MGCP Media Gateway Control Protocol
  • the call flow is divided into a crossover scheme and a non-crossover scheme.
  • the service platform in the crossover solution indicates that the CRBT plays and continues to be called.
  • the non-crossover solution the service platform only indicates the CRBT playback, and the connected call is completed by the switching device. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a method and system for reducing the call failure of the CRBT service. After the primary and backup devices of the CRBT service platform are switched, the CRBT playback and call status can be restored, and the call failure during the collapse and recovery of the broadband CRBT host is reduced. rate.
  • the present invention provides a method for reducing a call failure of a CRBT service, including:
  • the calling device After the calling service process enters the specified state, the calling device writes the call data of the call to the shared memory, and after the active device and the standby device are switched, the standby device reads the call data from the shared memory. , resume the call.
  • the call service process enters the specified state, where: the CRBT service platform uses the non-crossover solution to call the service process to enter the ring back tone state to the calling party, or the CRBT service platform uses the crossover solution to call the service process to enter the calling and calling party. Call status.
  • the call data includes: data that plays the CRBT to the calling party when the CRBT service platform uses the non-crossover solution, or data of the calling and the called call when the CRBT service platform uses the bridging scheme.
  • the method further includes:
  • the standby device resumes the call, if the on-hook signaling is received, the call is released; otherwise, the state of the call service flow before the primary device and the backup device are switched is maintained or discarded according to the result of the in-call detection.
  • the maintaining or abandoning the status of the call service flow before the switching of the active device and the standby device according to the result of the in-call detection includes:
  • the standby device sends an in-call detection message to the calling party, and if the response message of the calling party is received, the ring back tone state is kept to the calling party, otherwise the call is released. ;
  • the standby device sends an in-call detection message to the calling party and the called party respectively, and if the response message of the calling party and the called party is received, the main message is maintained. The called party is in a call state, otherwise the call is released.
  • the method further includes: marking the call data as valid, and if the primary device and the standby device are not switched after the call ends, The primary device marks the call data of the call in the shared memory as invalid Or delete;
  • the standby device After the standby device reads the call data from the shared memory, the call data written by the active device in the shared memory is marked as invalid or deleted.
  • the calling device writes the call data of the call to the shared memory, including:
  • the ratio of the number of calls written by the active device to the shared memory to the total number of calls in the given time or to the number of calls is not greater than Call data write ratio.
  • the reading, by the standby device, the call data from the shared memory comprises: the number of calls corresponding to the valid call data read by the backup device from the shared memory is stored by the primary device The ratio of the number of calls corresponding to the valid call data in the shared memory is not greater than the call data read ratio.
  • the call data write ratio/read ratio is determined as follows:
  • the system administrator sets the call data write ratio/read ratio
  • the system periodically collects system performance indicators, and determines the corresponding call data writing ratio/read ratio according to the system performance indicators;
  • the present invention further provides a system for reducing a call failure of a CRBT service, including an active device, a backup device, and a shared memory, where
  • the active device is configured to: after the call service flow enters the specified state, write the call data of the call to the shared memory;
  • the standby device is configured to: after the primary device and the standby device are switched, read the call data from the shared memory to resume the call.
  • the call service process enters a specified state, where: the CRBT service platform uses non-cross The incoming call service process enters the ring back tone state to the calling party, or the color ring tone service platform uses the crossover solution to call the service process to enter the calling and called call state.
  • the call data includes: data that plays the CRBT to the calling party when the CRBT service platform uses the non-crossover solution, or data of the calling and the called call when the CRBT service platform uses the bridging scheme.
  • the standby device is further configured to: release the call if the on-hook signaling is received after the call is resumed; otherwise, maintain or abandon the call service flow before the primary device and the backup device are switched according to the in-call detection result. status.
  • the standby device is further configured to:
  • the in-call detection message is sent to the calling party, and if the response message of the calling party is received, the CRBT state is kept to be played to the calling party, otherwise the conversation is released;
  • the CRBT service platform uses the bridging scheme to send an in-call detection message to the calling party and the called party respectively. If the response message of the calling party and the called party is received, the calling party and the called party are kept in a call state, otherwise the call is released. dialogue.
  • the primary device is further configured to: mark the call data as valid after the call data of the call is written into the shared memory, and if the primary device and the backup device do not switch after the call ends, The call data of the call in the shared memory is marked as invalid or deleted; the standby device is further configured to: after reading the call data from the shared memory, write the primary device in the shared memory Incoming call data is marked as invalid or deleted.
  • the primary device is configured to: the number of calls written by the primary device to the shared memory and the total number of calls in the given time in a given time or a given number of calls Or the ratio to the number of calls is not greater than the call data write ratio.
  • the standby device is configured to: the number of calls corresponding to the valid call data read from the shared memory and the number of calls corresponding to the valid call data stored by the active device in the shared memory The ratio is not greater than the call data read ratio.
  • the system further comprises a performance monitoring and data writing/reading control device, configured to: determine the call data writing ratio/read ratio according to the following manner:
  • FIG. 1 is a structural diagram of a system for reducing a call failure of a CRBT service in an embodiment
  • FIG. 2 is a flowchart of a method for reducing a call failure of a CRBT service in an embodiment
  • FIG. 3 is a structural diagram of a system for reducing a call failure of a CRBT service in an application example
  • FIG. 4 is a flow chart showing the operation of the system for reducing the failure of the CRBT service call shown in FIG. 3.
  • an embodiment of the present invention provides a system for reducing a call failure of a CRBT service, where the system includes an active device, a backup device, a dual-machine monitoring device, and a shared memory, where: the primary device is used for After the call service flow enters the specified state, the call data of the call is written into the shared memory;
  • the call service process enters the specified state, and the CRBT service platform uses the non-crossover solution to call the service process to enter the ring back tone state to the calling party, or the CRBT service platform uses the crossover solution to call the service process to enter the calling and called call. status.
  • the call data includes: The CRBT service platform plays the ring back tone to the calling party when the non-crossover solution is used.
  • the calling device when the calling device writes the call data of the call to the shared memory, the number of calls written by the active device to the shared memory and the given time in a given time or a given number of calls
  • the ratio of the total number of calls in the fixed time or the number of calls to the number of calls is not greater than the call data write ratio, that is, the active device writes the call data of the call according to a call data write ratio.
  • the call data write ratio refers to the ratio of the number of calls written to the shared memory to the total number of calls in the given time or the number of calls, which may be set by the system administrator, It can be dynamically modified after the system is running, as other dynamically modifiable parameters are periodically read by the system and validated in the next cycle, or dynamically determined in conjunction with system performance indicators.
  • the standby device is configured to read the call data from the shared memory after the primary device and the standby device are switched, and resume the call.
  • the standby device reads the valid call data from the shared memory according to the call data read ratio.
  • the call data read ratio refers to a percentage of the number of calls read out in the shared memory, and the call data read ratio is determined similarly to the call data write ratio, and may also be set by the system administrator. It can also be dynamically modified after the system is running. As other dynamically modifiable parameters are periodically read by the system and validated in the next cycle, or dynamically determined in combination with system performance indicators.
  • the standby device After the standby device reads the call data from the shared memory, the call data written by the active device in the shared memory is marked as invalid or deleted.
  • the standby device is further configured to release the call if the on-hook signaling is received; otherwise, the call service flow is maintained or abandoned according to the in-call detection result. status.
  • the standby device maintains or discards the state of the call service flow before the switching between the active device and the standby device according to the result of the in-call detection, including:
  • the standby device sends an in-call detection message to the calling party, and if the response message of the calling party is received, the ring back tone state is kept to the calling party, otherwise the call is released. ;
  • the standby device divides the calling party and the called party into Do not send an in-call detection message. If the response message of the calling party and the called party is received, the calling and calling state is maintained, otherwise the call is released.
  • the dual-machine monitoring device is configured to monitor the running status of the active device, and enable the standby device when the primary device is abnormal.
  • the embodiment of the present invention provides a method for reducing a call failure of a CRBT service, including the following steps:
  • the active device After the call service process enters the specified state, the active device writes the call data of the call to the shared memory.
  • the call service process enters the specified state, where the call service process uses the non-crossover solution to call the service process.
  • the CRBT status is played to the calling party or the CRBT service platform uses the bridging scheme to call the service flow in the main and called call state, and the active device writes the current call data to the shared memory; the status can also be set as needed.
  • the current call data written by the active device to the shared memory includes: the CRBT service platform plays the CRBT data to the calling party when the non-crossover solution is used, or the data of the calling and the called call when the CRBT service platform uses the crossover solution. .
  • the number of calls written by the active device to the shared memory and the given time in a given time or a given number of calls is not greater than the call data write ratio, that is, the active device writes the call data to the shared memory according to the call data write ratio.
  • the monitoring period can be set. Within each monitoring period, the ratio of the number of calls written to the shared memory to the total number of calls in the period does not exceed 30%, or, using a counter, set each N calls. The number of calls written to the shared memory does not exceed 30%, and the N value is set as needed.
  • the call data write ratio can be set by the system administrator, or can be dynamically modified after the system is running.
  • the other dynamically changeable parameters are periodically read by the system and validated in the next cycle, or dynamically combined with system performance indicators. Determined.
  • S102 After the primary device is abnormal, the primary device and the standby device perform switching;
  • S103 The standby device reads the call data from the shared memory to resume the call.
  • the standby device reads the valid call data from the shared memory according to the call data read ratio. The ratio of the number of calls corresponding to the valid call data read by the standby device from the shared memory to the number of calls corresponding to the valid call data stored by the active device in the shared memory is not greater than the call data read Proportion.
  • the determination of the call data read ratio is similar to the call data write ratio, and may also be set by the system administrator, or may be dynamically modified after the system is running, and the other dynamically changeable parameters are periodically read by the system, and Effective within the next cycle, or dynamically determined in conjunction with system performance metrics.
  • the call data writing ratio/read ratio may be determined in the following manner but not in other dynamic manners, including:
  • the system administrator sets the call data write ratio/read ratio
  • the system periodically collects system performance indicators, and determines the corresponding call data writing ratio/read ratio according to the system performance indicators;
  • step S103 after the standby device resumes the call, if the on-hook signaling is received, the call is released; otherwise, the state of the call service flow before the switching between the active device and the standby device is maintained or abandoned according to the in-call detection result.
  • the standby device sends an in-call detection message to the calling party, and if the response message of the calling party is received, the ring back tone state is kept to the calling party, otherwise the call is released. ; If the CRBT service platform uses the bridging scheme, the standby device sends an in-call detection message to the calling party and the called party respectively, and if the response message of the calling party and the called party is received, the main message is maintained. The called party is in a call state, otherwise the call is released.
  • the system for reducing a CRBT service call failure may further include: a performance monitoring and data writing/reading control device, configured to determine a call data writing ratio/read ratio, It can be determined in the following ways but not in other dynamic ways:
  • the performance monitoring and data writing/reading control device periodically collects system performance indicators, and determines a corresponding call data writing ratio/read ratio according to the system performance indicators;
  • the performance monitoring and data writing/reading control device compares the corresponding call data writing ratio/read ratio determined by the system with the calling data writing ratio/reading ratio set by the system administrator, and selects The smaller value is used as the final call data write ratio/read ratio.
  • the system administrator manually sets the call data write/read ratio, and sets the upper limit of the number of calls in the monitoring period (usually 10 minutes, which can be configured according to the actual situation). This value can be dynamically modified after the system is running. It can be read periodically by the system with other dynamically modifiable parameters and will take effect in the next cycle.
  • the system performance indicators include overall CPU utilization and memory usage, critical process CPU and memory usage, and 10 throughput (optional). In a specific implementation manner, a system performance indicator in different situations may be associated with a call data write/read ratio, and the performance monitoring and data write/read control device may collect the performance data after the corresponding relationship.
  • Table 1 Correspondence between system performance indicators and the current call data write ratio allowed by the system. Assume that the upper limit of the data write ratio set by the system administrator is 70%. If the current system performance indicator corresponds to the first correspondence, that is, call data. The write ratio is up to 80%, and the smaller of the two is selected after the comparison, that is, 70% is the final call data write ratio written to the shared memory; if the current system performance indicator corresponds to the second correspondence, that is, the call data The write ratio is up to 60%, and the smaller of the two is selected after the comparison, that is, 60% as the final call data write ratio written to the shared memory. In this application example, the active device may also set a service status counter for every hundred calls, and the initial value of the counter is 0.
  • a CRBT call triggers the counter to increase by 1, and reaches 100 and then resets. 0, re-accumulate.
  • the active device can set the call data corresponding to the counter count 0 ⁇ 29 to be written to the shared memory. In this way, it is possible to write the number of calls corresponding to the counter to the shared memory in accordance with the final call data write ratio.
  • the correspondence between the system performance index and the call data readout ratio currently allowed by the system can also be set as shown in Table 2:
  • Table 2 Correspondence between the system performance indicator and the current allowed call data read ratio of the system. Assume that the upper limit of the data read ratio set by the system administrator is 70%. If the current system performance indicator corresponds to the first correspondence, that is, the call data. The readout ratio is 80%, and after the comparison, the two are selected. The smaller value, that is, 70% as the final call data readout ratio read from the shared memory; if the current system performance index corresponds to the second correspondence, that is, the call data readout ratio is 60%, after the comparison, the two are selected. The smaller value, 60%, is the final call data readout ratio read from the shared memory. As shown in FIG. 4, in the application example, the workflow of the system for reducing a CRBT service call failure is as follows:
  • S201 The broadband ringtone intelligent network service platform starts normally, the active device runs normally, and the dual-machine monitoring device monitors the working status of the active device; whether the dual-machine monitoring device has an intelligent network platform, database or system abnormality for the primary device Monitoring;
  • S203 The interactive side call, the CRBT service platform enters the ring tone playing state by using the non-crossover solution, or the color ringing service platform uses the bridging scheme and the calling party enters the call state;
  • S205 The performance monitoring and data writing/reading control device compares the call data writing ratio corresponding to the system performance indicator (as shown in Table 1) with the call data writing ratio set by the system administrator, and selects both The smaller value is sent to the active device as the current shared memory call data write ratio;
  • the data structure for writing call data to the shared memory mainly includes: a dialog protocol identifier (such as a call-id, a from-tag, and a to-tag field in the sip protocol), a user number (including a calling and called number, Forwarding number, ur i, etc., routing data of the protocol stack, current media negotiation status, and saved media information, and identifying the validity of the data area in the fixed area of the shared memory file (initially "valid,"), the data The segment is fixed in length in the shared memory.
  • a dialog protocol identifier such as a call-id, a from-tag, and a to-tag field in the sip protocol
  • a user number including a calling and called number, Forwarding number, ur i, etc., routing data of the protocol stack, current media negotiation status, and saved media information, and identifying the validity of the data area in the fixed area of the shared memory file (initially "valid,"), the data The segment is fixed in length in the shared memory.
  • the dual-machine monitoring device monitors whether the primary device is abnormal. If no abnormality is found, the primary device continues to work normally, and the call data in the shared memory is marked as invalid or deleted after the call ends; otherwise, the process goes to step S208;
  • S209 The standby device sends a message to the performance monitoring and data writing/reading control device, requesting to obtain a call data read ratio of the current shared memory;
  • S210 performance monitoring and data writing/reading control device comparing the system performance indicator Corresponding call data read ratio (as shown in Table 2) and the call data read ratio set by the system administrator, select the smaller of the two as the current shared memory final call data read ratio, and send to the standby device;
  • the standby device reads out the call data marked as valid in the shared memory according to the obtained call data read ratio, and then marks the call data written by the active device in the shared memory as invalid or deleted, according to the read. Call data to recover this part of the call;
  • step S212 If the standby device receives the on-hook signaling, release the session, and end the call; otherwise, go to step S213;
  • S213 Send an in-call detection message to the calling party and the calling party according to the bridging and non-crossover scheme configured by the service;
  • the detection message is sent in several batches.
  • the default value can be used for each batch of data. It can also be configured by the administrator based on the current traffic of the current network and the status of the network device.
  • the detection message is sent to the calling side, and the caller's detection response is not received within the waiting period after the transmission, or the response carries the error code to inform that the call does not exist, and the call data in the memory is released; otherwise, if the calling side sends If it responds correctly, it is still in the ring tone playback state, the memory call data continues to be maintained, and the on-hook request from the calling side continues to be processed later for the calling party or the calling party to release the call.
  • S215 The standby device replaces the primary device service, and the dual-machine monitoring device monitors the working state of the standby device; subsequent requests are processed according to the primary device.
  • the data area is written to the shared storage for re-switching.
  • the method and system for reducing the CRBT service call failure provided by the present invention are used for the CRBT playback state or the crossover scheme of the non-crossover solution before the dual-machine switching of the broadband CRBT service platform is compared with the prior art.
  • the CRBT playback and the call after the switching of the broadband CRBT service in the fault-tolerant network can be effectively restored, and the call failure rate during the collapse and recovery of the broadband CRBT host is reduced, and the normal service is not affected. Stability.
  • the method and system for reducing the call failure of the CRBT service overcome the problem of writing a large amount of call data to the shared storage, which may cause a decrease in CPU performance and 10 is too busy, by controlling the write/read data of the shared memory. Defects greatly improve CPU performance and avoid system waste.
  • the CRBT playback and the call after the switching of the broadband CRBT service in the fault-tolerant network can be effectively restored, and the call failure rate during the collapse and recovery of the broadband CRBT host is reduced, and the normal service is avoided. Stability and system performance.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)

Abstract

La présente invention concerne un procédé et un système permettant de limiter les échecs d'appel d'un service de tonalités de retour d'appel personnalisées. Ledit système comprend un dispositif principal, un dispositif de secours et une mémoire partagée, et ledit procédé se déroule de la manière suivante : le dispositif principal écrit les données d'appel de l'appel dans la mémoire partagée après que le flux du service d'appel est passé à un certain état, et le dispositif de secours lit ces données d'appel dans la mémoire partagée et rétablit l'appel après le transfert du dispositif principal à lui-même. Grâce à ce procédé et à ce système, la lecture des tonalités de retour d'appel personnalisées est fiable, l'appel du service de tonalités de retour d'appel personnalisées à large bande au sein d'un réseau comprenant deux dispositifs pour la tolérance aux défaillances est récupéré après le transfert, le taux d'échec des appels pendant la période de panne et de rétablissement d'un hôte de tonalités de retour d'appel personnalisées à large bande est réduit, le service normal reste stable et les performances du système ne sont pas affectées.
PCT/CN2012/070102 2011-06-08 2012-01-06 Procédé et système permettant de limiter les échecs d'appel d'un service de tonalités de retour d'appel personnalisées WO2012167620A1 (fr)

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CN100466522C (zh) * 2005-12-13 2009-03-04 华为技术有限公司 一种远端接入通信系统及其控制方法
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CN1976370A (zh) * 2005-11-28 2007-06-06 中兴通讯股份有限公司 网关主备倒换后呼叫数据保持一致的方法
CN101022661A (zh) * 2007-03-20 2007-08-22 中国移动通信集团江苏有限公司 彩铃1+n容灾实现方法

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