WO2007012237A1 - Procédé et système de traitement de service destinés à un réseau d’échange logiciel - Google Patents

Procédé et système de traitement de service destinés à un réseau d’échange logiciel Download PDF

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Publication number
WO2007012237A1
WO2007012237A1 PCT/CN2006/000615 CN2006000615W WO2007012237A1 WO 2007012237 A1 WO2007012237 A1 WO 2007012237A1 CN 2006000615 W CN2006000615 W CN 2006000615W WO 2007012237 A1 WO2007012237 A1 WO 2007012237A1
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WIPO (PCT)
Prior art keywords
service
quality
parameter
bearer
control unit
Prior art date
Application number
PCT/CN2006/000615
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English (en)
French (fr)
Inventor
Jun Fang
Haopeng Zhu
Yong Zhong
Fang Yin
Lun Lian
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CNB2005100871997A external-priority patent/CN1324839C/zh
Priority claimed from CNA2005100967788A external-priority patent/CN1889514A/zh
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to CN200680011942.3A priority Critical patent/CN101160792B/zh
Publication of WO2007012237A1 publication Critical patent/WO2007012237A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/50Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/5003Managing SLA; Interaction between SLA and QoS
    • H04L41/5019Ensuring fulfilment of SLA

Definitions

  • the present invention relates to a quality of service control technique in a softswitch network, and more particularly to a service processing method and a service processing system for improving the quality of a service in a softswitch network.
  • Softswitch networks are networks built using softswitch technology.
  • the key softswitch devices are the Media Gateway (MGW) and the Media Gateway Controller (MGC).
  • MGW functions as a bearer device for voice services, multimedia services, and narrowband data services, and performs service flow format conversion and bearer processing functions between different networks.
  • the MGC is a core device independent of the transport network, and mainly completes call control, resource allocation, and protocol.
  • FIG. 1 shows a device connection diagram of a softswitch network.
  • MGW1 and MGW2 are media gateways of both parties of the service communication, carrying at least one service call, and each service call corresponds to one service channel for the service call.
  • the MGC can be a Softswitch Server, a Mobile Switching Center Server (MSC Server), a Next Generation Network Server (NGN Server), or a Class Mobile Switching Center (MSCe).
  • the MGC corresponds to different devices, and the communication protocols between the softswitch devices are different.
  • WCDMA Wideband Code Division Multiple Access
  • the MGC is an MSC Server, and the MGW passes. Nb protocol communication, MGW and MSC Server communicate through Mc protocol, and MGC enters through Nc protocol. Line communication.
  • the MGC is the MSCe, the MGW communicates through the YYp protocol, the MGW and the MSCe communicate through the 39 protocol, and the MSCe communicates through the ZZp protocol.
  • the MGW can also communicate with other devices (eg, packet service devices, circuit service devices, etc.).
  • the packet service is carried on the MGW.
  • the service quality of services carried between the two MGWs is deteriorated due to insufficient MGW resources, insufficient data bandwidth, and data corruption. For example, the packet loss rate is high, the delay is large, and the jitter is frequent. .
  • the softswitch device does not control the traffic of the service flow, the quality of service (QoS) of all services is not guaranteed.
  • the prior art does not have a technical solution for performing flow control when the amount of packet service shields carried between the MGW pairs is degraded. Once the packet service shield between the MGW pairs becomes worse, the quality of service of all packet services is not guaranteed, especially for real-time packet services with high quality of service requirements.
  • the service quality of the softswitch network may fluctuate.
  • the reason is that different MGWs in the same softswitch or different softswitches usually have multiple bearer paths.
  • the service can choose any one of the bearer paths to carry. If more services are carried on a bearer path with a narrow bandwidth, the quality of the service on the path is deteriorated. If the business is increased without any deterioration in service quality, the overall service quality will only worsen. Therefore, in the process of actually carrying services, the service quality of the softswitch network may be due to the number of bearer services and the bandwidth. The influence of small factors, such as fluctuations. However, so far, an effective solution has been proposed for how to avoid the problem of further deterioration of the total service quality caused by the increase of services on the bearer path with poor service quality. Summary of the invention
  • the main purpose of the present invention is to provide a service processing method and a processing system in a softswitch network, which control the traffic of the service according to the service quality carried by the service bearer unit, thereby ensuring the service quality of the carried service.
  • the present invention also provides a service processing method and a processing system in another softswitch network, and selects a route of a newly added service according to the service quality carried by the service bearer unit, so that the selected route can avoid the bearer path with poor bearer quality. To guarantee the quality of service of the services carried.
  • a service processing method in a softswitch network comprising:
  • the service bearer unit monitors the quality of service parameters of the carried service flow
  • the service bearer unit reports the monitoring result to the service control unit
  • the service control unit controls the traffic of the service based on the quality of service conditions reflected in the monitoring results.
  • the method for the service bearer to monitor the quality of service parameters of the carried service flow is:
  • the service quality parameters of all or part of the service channels in the service flow are monitored, and the service quality parameters of the monitored service channels are sampled to obtain the service quality parameters of the service flow.
  • the monitoring of the quality of service parameters of the service channel is:
  • the service monitors the packet loss rate, delay, jitter, service quantity parameter, or any combination of the foregoing four.
  • For the circuit service it monitors the interrupt parameters of the circuit service.
  • the service quantity parameter includes: a number of service channels, an effective bandwidth, or a number of valid net bytes received, or any combination of the three.
  • the interrupt parameter includes an available time parameter and an interrupt frequency parameter.
  • the controlling the traffic of the service according to the monitoring result is:
  • the number of valid channels that can be carried is calculated according to the number of reported services. If the total number of current service channels is greater than the number of valid channels, the current total number of service channels is limited, so that the current total number of service channels is equal to or less than the number of valid channels.
  • the method further includes: the service bearer unit compares the monitoring result with a preset threshold value of the preset quality of service parameter, determines a current service quality level, and carries the current quality of service in the reported monitoring result. Level information;
  • the service control unit controls the traffic of the service according to the monitoring result: querying the correspondence between the predetermined service quality level and the service channel restriction ratio, and determining the service channel restriction ratio corresponding to the currently reported service quality level, and the current ratio is The number of access service channels is limited.
  • the service control unit controls traffic of the service according to the monitoring result:
  • the channel limit ratio which limits the number of currently accessed service channels.
  • the restricted service channel is a packet service channel or a circuit service channel.
  • the method for limiting the number of service channels is: rejecting the establishment of a new service channel, or turning off a service channel with a lower priority.
  • the controlled traffic is the traffic of the packet service, and the traffic of the service is controlled according to the quality of service condition reflected by the monitoring balance: determining whether the quality of service is degraded according to the monitoring result, and decreasing the packet if decreasing The bandwidth required for the service channel.
  • the method for reducing the bandwidth required by the packet service channel is: encoding, or reducing the code rate, or increasing the coding rate of the packet service channel by using a coding mode smaller than the original coding mode.
  • the service bearer unit reports the monitoring result to the service control unit: using a timing report manner;
  • the threshold value of the service quality parameter is set in the service bearer unit. If it is determined that the monitored service quality condition reaches the threshold, the monitoring result is triggered.
  • the service bearer unit is a media gateway
  • the service control unit is a media gateway controller
  • a service processing system in a softswitch network including a service bearer unit and a service control unit, the system further includes:
  • a monitoring unit configured to monitor a service quality parameter of the service flow carried by the service bearer unit, and report the monitoring result to the service control unit;
  • a flow control unit configured to control traffic of the service according to a quality of service condition reflected by the monitoring result reported by the monitoring unit.
  • the quality of service parameter monitored by the monitoring unit is: for a packet service, a packet loss rate, a delay, a jitter, a service quantity parameter, or any combination of the foregoing four for a packet service;
  • the break parameter of the business is: the number of service channels, the effective bandwidth, or the number of valid net bytes received, or any combination of the first three.
  • the interrupt parameter includes an available time parameter and an interrupt frequency parameter.
  • the service bearer unit is a media gateway, and the service control unit is a media gateway controller.
  • a service processing method in a softswitch network comprising:
  • the service bearer unit monitors the quality of service parameters of the carried service flow
  • the service bearer unit reports the monitoring result to the service control unit
  • the service control unit selects a bearer path with better service quality for the service according to the quality of service status reflected by the monitoring result.
  • the service bearer unit monitors the service quantity parameter of the carried service flow, and specifically monitors the service quality parameter of the service flow carried by the bearer path between the service bearer units belonging to the same service control unit;
  • the service flow monitored by the service bearer unit is: sampling at least one service flow selected on the bearer path.
  • the monitoring of the service quality parameter of the service flow is: for the packet service, monitoring a packet loss rate, a delay, a jitter, a service quantity parameter, or any combination of the foregoing four of the service channel;
  • the business is to monitor the interrupt parameters of the circuit business.
  • the service quantity parameter includes: a number of service channels, an effective bandwidth, or a number of valid net bytes received, or any combination of the three.
  • the interruption parameter includes an available time parameter and an interruption frequency parameter.
  • the threshold of the quality of service parameter is set in the service carrier unit by means of triggering reporting. If it is determined that the monitored quality of service condition reaches the threshold, the monitoring result is triggered.
  • the service bearer unit is a media gateway
  • the service control unit is a media gateway controller
  • a service processing system in a softswitch network including a service bearer unit and a service control unit, the system further includes:
  • a monitoring unit configured to monitor a service quality parameter of the service flow carried by the service bearer unit, and report the monitoring result to the service control unit;
  • the path control unit is configured to select a bearer path with a better service quality for the service according to the quality of service status reflected by the monitoring result reported by the monitoring unit.
  • the service quality parameter of the service flow monitored by the monitoring unit is: a service quality parameter of the service flow carried by the bearer path between the service bearer units belonging to the same service control unit;
  • the service flow monitored by the monitoring unit is: sampling at least one selected service flow on the bearer path.
  • the quality of service parameter monitored by the monitoring unit is: for a packet service, a packet loss rate, a delay, a jitter, a service quantity parameter, or any combination of the foregoing four for a packet service;
  • the break parameter of the business is: for a packet service, a packet loss rate, a delay, a jitter, a service quantity parameter, or any combination of the foregoing four for a packet service;
  • the break parameter of the business is: for a packet service, a packet loss rate, a delay, a jitter, a service quantity parameter, or any combination of the foregoing four for a packet service.
  • the service quantity parameter includes: the number of service channels, the effective bandwidth, or the number of valid net bytes received, or any combination of the three.
  • the interruption parameter includes an available time parameter and an interruption frequency parameter.
  • the service bearer unit is a media gateway, and the service control unit is a media gateway controller.
  • the first method and system of the present invention monitors the service quality of the service flow by the service bearer unit, and reports the monitoring result to the service control unit, where the service control unit controls the traffic of the service. Therefore, the quality of some services (especially those with higher quality of service requirements) can be guaranteed. In particular, when the service shield becomes worse, the traffic of some services can be restricted by limiting the total number of service channels and reducing the bandwidth required for the service channel, thereby improving the quality of services.
  • the second method and system of the present invention monitors the service quality of the service flow by the service bearer unit, and reports the monitoring result to the service control unit.
  • the service control unit establishes the new service based on the monitoring result.
  • the selected route can avoid the bearer path with poor bearer quality and guarantee the service quality of the carried service.
  • the transmission quality of each service in the same bearer path is similar, only a small number of services need to be sampled and monitored during monitoring to know the transmission quality of the bearer path between the two media gateways in the office or in an external office. It monitors the established services, so it does not add additional traffic. It only needs a small amount of statistics and reporting work by the media gateway, and the transformation cost is low.
  • the method of the present invention since the method of the present invention only transforms the local softswitch equipment (MGC and MGW), without the cooperation of the all softswitch network or other softswitch equipment, the packet quality of service can be guaranteed while reducing the presentity. There is a network impact, reducing the cost of network upgrades.
  • 1 is a schematic diagram of device connection of a softswitch network
  • 2 is a flowchart of traffic processing of a service in a softswitch network according to a method of the present invention
  • FIG. 3 is a schematic diagram of a service processing system in a softswitch network corresponding to the first method of the present invention
  • FIG. 4 is a flowchart of routing processing of a service in a softswitch network according to the second method of the present invention
  • FIG. 5 is a schematic diagram of a softswitch network connected through a packet network
  • FIG. 6 is a schematic diagram of a service processing system in a softswitch network corresponding to the second method of the present invention. Mode for carrying out the invention
  • the present invention can monitor the service quality of the service flow on the MGW, and report the monitoring result to the MGC connected thereto, and the MGC controls the traffic of the service carried by the MGW according to the quality of service status reflected by the monitoring result. Or choose a carrier path with good service quality for new services.
  • FIG. 2 is a flow chart of processing a service in a softswitch network according to the first method of the present invention. Referring to Figure 2, the process includes:
  • Step 201 The MGW monitors the total service quality parameter of the carried service flow.
  • the MGW can monitor the service quality of all the service channels that are carried; or, only the service shield of the part of the service channel that is carried. Monitoring, here, since one MGW can be associated with multiple other MGWs (including other MGWs within the jurisdiction of the MGW, and other MGWs that are owned by the MGC) Each MGW pair composed of the MGW and other MGWs may carry multiple service channels, so that 1 N of the multiple service channels carried in each MGW pair can be monitored here.
  • Service channel where N is an integer greater than or equal to 1; as to which service channel is specifically monitored, it can be determined by the MGC, that is, when a service channel is accessed, the MGC sends a service quality monitoring command to the MGW through the He interface, indicating the MGW.
  • the service channel is monitored; or the service channel to be monitored is determined by the MGW itself, and the service channel identifier to be monitored is pre-configured in the MGW.
  • the content of the service quality of each service channel to be monitored is:
  • the packet service it may be a quality of service parameter for the service channel, for example: packet loss rate, delay, jitter, service quantity parameter of the packet service , or any combination of the foregoing four is monitored and recorded at any time.
  • the service quantity parameter may further include: a number of service channels, an effective bandwidth, or a number of valid net bytes received, or any combination of the three.
  • the MGW can indicate the effective bandwidth of the packet service by recording the number of valid net bytes received.
  • the interrupt parameters of the circuit service can be monitored.
  • the so-called interrupt parameters can include available time parameters and interrupt frequency parameters.
  • the specific monitoring method for monitoring the packet loss rate, the delay, the jitter, the service quantity parameter, and the interruption parameter may be a conventionally known monitoring method, and details are not described herein again.
  • the MGW In order to determine the total service quality parameter of the service flow, the MGW sends the service shield quantity parameter when establishing the monitored service, and samples the service quality parameter of each monitored service channel to obtain a packet that can reflect the MGW.
  • the total quality of service parameters of the service flow quality of service including the overall packet loss rate, delay, jitter, or traffic quantity parameters.
  • the specific sampling method can use existing technologies, for example, the sampling disclosed in IETF RFC3550 can be used. method.
  • the service flow is monitored and the traffic restriction is performed for each MGW to carry the service flow.
  • the total quality of service parameter here refers to one The total quality of service parameters of the MGW for the carried services.
  • Step 202 The MGW reports the monthly service quality report to the MGC through the He interface, where the service quality report adopts the format of the He interface message, and the monitoring result of step 101 is included.
  • a specific reporting method is timing reporting: a preset timer is set in the MGW, and the quality of service report is reported in each timing period according to a preset time interval.
  • triggering reporting which can also be called alarm mode:
  • the trigger condition is preset in the MGW, for example, preset threshold values of the monitored total quality of service parameters (for example, a packetization rate, a delay, and a jitter threshold), and the total quality of service parameters monitored in real time.
  • the threshold value corresponding to the parameter is compared.
  • the service quality report is triggered to report the alarm to the MGC.
  • the threshold value here may be one, or may be a plurality of hierarchical threshold values, that is, a service quality level threshold value, and when the monitored service quality reaches a certain threshold value, the corresponding level is triggered to be reported.
  • the service quality report which carries the corresponding service quality level information, that is, the alarm level information; for example: the quality of service alarm level can be divided into 0-5 levels according to the packet loss rate in the total service quality parameter, namely:
  • the present invention can also divide the service shield alarm level into multiple levels based on delay or jitter parameters.
  • the above alarm mode is to directly set a threshold value for the parameter of the total service quality, and the present invention also
  • the Qos value reflecting the quality of service can be comprehensively determined according to the packet loss rate, delay, jitter and other parameters in the monitored total service parameter in real time.
  • ITU-T P.861 can be used.
  • the disclosed method for comprehensively determining Qos presets a Qos threshold in the MGW, compares the determined Qos value with a corresponding Qos threshold in real time, and triggers when the Qos value reaches its corresponding threshold. Reporting the service quality report; similar to the above packet loss rate, multiple levels of Qos thresholds can also be set here. When the monitored Qos value reaches a certain threshold, the corresponding level of service is triggered. The quality report, which carries the corresponding alarm level information.
  • Step 203 The MGC controls the traffic of the service carried by the MGW according to the quality of service condition reflected by the monitoring result reported by the MGW. It can control the traffic of the packet service, and can also control the traffic of the circuit service.
  • the method for controlling traffic in this step can be as follows:
  • the first type of traffic control mode If the monitoring result reported by the MGW includes the service quantity parameter, the number of valid channels that can be currently carried is determined according to the service quantity parameter.
  • the calculation method is: dividing the current effective bandwidth by the coding bandwidth of the current service, and the obtained value is the number of valid channels, and the service coding bandwidth may be preset in the MGC; for example: when the report is valid in the MGW service quality report.
  • the MGC determines whether the current total number of service channels (the total number of service channels is recorded in the MGC) is greater than the number of valid channels. If yes, the service channel of some services is restricted, so that the current total number of service channels is determined. It is equal to or less than the number of valid channels, thus controlling the traffic flow; otherwise, the number of service channels is not controlled.
  • the limitation is as follows: rejecting the establishment of a new service channel; or pre-setting the priority of each service channel in the MGC, and closing the priority when the quality of service deteriorates Lower business channel.
  • the second type of traffic control mode the correspondence between the preset alarm level and the service channel limit ratio in the MGC.
  • the limit ratio of the service channel is the ratio of the number of restricted service channels to the total number of service channels. For example:
  • Level 1 alarms limit access to service channels that account for 5% of the total number of service channels
  • Level 2 alarms limit access to service channels that account for 20% of the total number of service channels
  • Level 3 alarms limit the service channel access of 40% of the total number of service channels
  • Level 4 alarms limit access to 70% of the total number of service channels
  • Level 5 alarms limit the service channel access that accounts for 90% of the total number of service channels.
  • the MGC queries the correspondence between the alarm level and the service channel restriction ratio, and determines the service channel restriction ratio corresponding to the reported alarm level, and the ratio is used for the currently accessed The service channel is restricted to improve the service quality of the MGW.
  • the third flow control mode is: preset the threshold value of the monitored total quality of service parameter in the MGC, where the setting method is the same as the above-mentioned threshold for setting the total quality of service parameter in the MGW; when the MGC receives the MGW report After the total quality of service parameter, the total quality of service parameter is compared with a threshold corresponding to the parameter, and when the monitored quality of service parameter reaches its corresponding threshold, the current quality of service is determined to be worse, according to The preset service channel restriction ratio limits the currently accessed service channel.
  • the threshold value here may be one, or may be a plurality of hierarchical thresholds.
  • the The level of the threshold is used as the current quality of service level.
  • the correspondence between the quality of service level and the service channel limitation ratio must be preset in the MGC to determine the current quality of service level. After The corresponding relationship is determined, and the service channel restriction ratio corresponding to the current service shield level is determined, and the currently accessed service channel is restricted by the ratio.
  • the MGC comprehensively determines a Qos value reflecting the quality of service according to parameters such as a packet loss rate, a delay, and a jitter in the total quality of service parameter in the quality of service report, and preset one or more thresholds of Qos in the MGC.
  • the QoS value is compared with the corresponding QoS threshold in real time. When the QoS value reaches the corresponding threshold, the current service channel is restricted according to the preset service channel restriction ratio. Setting the Qos threshold in the MGW is similar. You can also set multiple levels of the Qos threshold. When it is determined that the Qos value reaches a certain threshold, the level of the threshold is used as the current service.
  • the quality level is queried, and the corresponding relationship between the service quality level and the service channel restriction ratio in the MGC is queried, and the service channel restriction ratio corresponding to the current service quality level is determined, and the currently accessed service channel is restricted by the ratio.
  • the threshold value of the monitored total quality of service parameter can be preset in the MGC. After the MGC receives the total quality of service parameter reported by the MGW, the total service quality parameter is corresponding to the parameter. The threshold values are compared. When the monitored quality of service parameters reach their corresponding thresholds, the current quality of service condition is determined to be degraded. Or, according to the packet loss rate, delay, jitter, and other parameters in the total quality of service parameter in the quality of service report, the Qos value reflecting the quality of service is comprehensively determined, and a threshold of Qos is preset in the MGC, and the Qos value is determined. Whether the current quality of service situation is declining.
  • the manner of reducing the bandwidth required for the packet service channel is: encoding the packet service in the packet service channel by using a coding mode that consumes less bandwidth than the original coding mode.
  • the original voice service channel uses G.711 encoding.
  • other voice coding codes such as G.729 and AMR are used to encode, which can effectively reduce the bandwidth required by the service channel and improve the service quality of the packet service carried by the MGW.
  • the bandwidth required for the service channel can be reduced by reducing the code rate of the code.
  • the code rate of 4.75 kbps to 12.2 kbps can be used when using AMR coding, including various code rates of 4.75, 6.7, 7.4, 12.2, and the like.
  • the bandwidth required by the service channel can be reduced by increasing the packet size, for example, using voice units of different durations such as 10 ms, 20 ms ⁇ 30 ms, and the packet size is reduced as the packet size in the data packet is longer. Therefore, the number of headers is reduced, so that the occupied bandwidth is reduced.
  • FIG. 3 is a schematic diagram of a service processing system in a softswitch network corresponding to the first method.
  • the service processing system includes a service bearer unit (such as MGW here) and a service control unit (such as MGC here), where:
  • the service carrying unit is provided with a monitoring unit, configured to monitor a service quality parameter of the service flow carried by the service bearer unit, and report the monitoring result to the service control unit; the service control unit is provided with a flow control unit, The traffic of the service is controlled according to the quality of service status reflected by the monitoring result reported by the monitoring unit.
  • the above monitoring unit may also be disposed on a device other than the bearer unit, or may be independently set; the flow control unit may also be disposed on a device other than the service control unit, or may be independently set.
  • the quality of service parameter monitored by the monitoring unit of the processing system is: for a packet service, a packet loss rate, a delay, a jitter, a service quantity parameter, or the foregoing four of the service channel. Any combination; for circuit services, is the interrupt parameter of the circuit business.
  • the service quantity parameter includes: the number of service channels, the effective bandwidth, or the number of valid net bytes received, or any combination of the first three.
  • the interrupt parameters include an available time parameter and an interrupt frequency parameter. 4 is a flow chart of processing a service in a softswitch network according to the second method of the present invention. Referring to Figure 4, the process includes:
  • Step 401 The MGW samples and selects a service.
  • the bearer path that the MGC needs to detect is the bearer path of the service flow. Therefore, at least one service flow is selected on each bearer path of the established service to ensure that the MGC can learn the communication quality of the bearer path of each established service flow. .
  • the service quality established on the same bearer path is similar, only the service flows on the same bearer path are sampled, and one or several service flows are selected to learn the bearer through the quality of the service flow. The link quality of the service.
  • Step 402 The MGW sends the service quality parameter while establishing the service.
  • the quality parameter should include an interrupt parameter of the circuit service, and the interrupt parameter can include an available time parameter and an interrupt frequency parameter; for a packet service, the quality parameter should include a packet loss rate and a delay of the packet service.
  • the time, jitter, and traffic quantity parameters, wherein the traffic quantity parameter may further include the number of service channels, the effective bandwidth of the packet/circuit/transport service, or the number of valid net bytes received, or any combination of the three.
  • Step 403 The MGW reports the service quality report to the MGC to which it belongs. After the MGW delivers the quality of service parameters in step 402, the quality of service parameters can be monitored in different ways. For example, the quality of service parameters are recorded at any time, or the quality of service parameters of some service channels are monitored through the monitoring channel specified by the MGC.
  • the specific monitoring method can utilize the well-known monitoring method, and will not be described here.
  • the MGW can report the service quality report to the MGC to which it belongs, periodically or in the event of a preset type of event. For example, if the MGW is periodically reported, the MGW presets a timer, and periodically reports the service quality report to the MGC to which it belongs according to a preset time interval. If the MGW is reported under the trigger of a preset type of event, then the MGW has to set a trigger event in advance. For example, setting different thresholds such as available time, interrupt frequency, packet loss rate, delay, jitter, etc.
  • the MGW reports the service quality report to the MGC to which it belongs.
  • the content in the service quality report may be available time, interrupt frequency, packet loss rate, delay, jitter, number of service channels, effective bandwidth of packet/circuit/transport service, and valid net bytes received. Any combination or one of them.
  • Step 404 the MGC estimates the link quality. Since the MGW has reported the service quality report to the MGC to which it belongs, in step 403, the MGC can estimate the quality of the link according to the content in the service quality report. That is to say, the MGC can detect the communication quality of the bearer path through the MGW.
  • Step 405 When there is a new service, the MGC avoids the path with poor communication quality according to the detection result, and selects a path with better communication quality to carry the new service. Since the MGW selects at least one service on each path of the bearer service and delivers the QoS parameter at the same time as the service is established, the MGC can learn the link quality of each bearer service through the service quality report reported by the MGW. Therefore, it is possible to select a bearer path with better communication quality for the newly added service. Moreover, since the monitored services are established, no additional traffic will be added, and only a small amount of statistics and reporting work will be required for MG W, with little additional cost.
  • the first embodiment of the present invention is directed to a method of routing control based on bearer network quality within the same softswitch office.
  • FIG. 5 is a schematic diagram of a softswitch network connected through a packet network.
  • the MGC1 controls the MGW11, the MGW12, and the MGW13, and the control interfaces are Cl1, C12, and C13, and the M.GWs are connected together through the packet network 1 using the interfaces 111, 112, and 113.
  • MGC1 can communicate with MGC2 through the C2 interface, and interoffice traffic can be transmitted through the 12 interface. Similarly, MGC1 can communicate with other offices via the C3 interface and other transport interfaces.
  • the MGW11 under the MGC1 and the other MGWs under the MGC1, such as the MGW12, the MGW13, etc., respectively there is a bearer path. Then, the MGW 11 samples and selects one or several services on the bearer path of each established service, and delivers the service quality parameter at the same time as the service is established, and reports the service quality report to the MGC 1 periodically or through event triggering. Therefore, MGC 1 can detect the communication quality of the bearer path between the MGW 11 and other MGWs under it.
  • MGC1 When there is a new service, and the new service needs to cross two MGWs under one MGC1 control system and then arrive at another softswitch, MGC1 needs to select communication according to the detection result of the communication quality between the MGWs. A path of better quality to carry the new service.
  • the newly added service is accessed from MGW11, and can pass through interface 111, packet network 1 and 112. After passing through MGW12, it can reach another softswitch C3. It can also go through interface 111, packet network 1 and 113, from MGW13. After the arrival, arrive at another softswitch C3. Then, the MGC1 that controls the MGW11 needs to determine which communication path quality is better according to the service quality report on the bearer path between the MGW11 and the MGW12 reported by the MGW11 and the service quality report on the bearer path between the MGW11 and the MGW13.
  • the MGC avoids the bearer path between the MGW11 and the MGW12 with poor communication quality, and selects the communication quality comparison. Good bearer path between MGW11 and MGW13. Thus It proves the transmission quality of new services.
  • the second embodiment is directed to a method for routing control according to the quality of the bearer network between different softswitch offices.
  • MGC1 controls MGW11, MGW12, and MGW13, and the control interfaces are Cl1, C12, and C13, and the MGWs are connected through the packet network 1 using interfaces 111, 112, and 113.
  • MGC1 can communicate with MGC2 through the C2 interface, and interoffice traffic can be transmitted through the 12 interface. Similarly, MGC1 can communicate with other offices via the C3 interface and other transport interfaces.
  • the MGW 11 under the MGC1 and the other MGWs under the MGC such as the MGW 22 and the MGW 33, respectively, there is a bearer path. Then, the MGW11 samples and selects one or several services on the bearer path of each established service, and delivers the service quality parameter at the same time as the service is established, and reports the service quality report to the MGC1 periodically or through the event triggering, and the MGC1 passes the service.
  • the quality report detects the communication quality of the bearer path between the MGW 11 and the MGW under the other MGC.
  • MGC1 may not be able to detect the communication quality of the bearer path between MGW11 and the MGW in some other softswitch, and only detect the communication from MGW11 to other softswitches. quality.
  • the MGC needs to select a path with better communication quality according to the detection result of the bearer path communication quality between the MGWs to carry the new service. business.
  • the newly added service is established between the MGW1 1 under the MGC1 and the MGW 22 under the MGC 2, and the MGC 1 determines whether the communication shield of the bearer path between the MGW 11 and the MGW 22 can be detected according to the inter-office control signaling.
  • the MGC1 can detect the communication quality of the bearer path between the MGW 11 and the MGW 22, if the bearer If the communication quality of the path is good, the MGC1 carries the new service on the bearer path between the MGW11 and the MGW22. If the communication quality of the bearer path is poor, the MGC1 selects the communication quality between the MGW11 and the other MGWs under the MGC2.
  • a good bearer path (such as the bearer path between the MGW11 and the MGW21) is used to carry the new service, and then the bearer path between the other MGWs and the MGW22 (the bearer path between the MGW21 and the MGW22) in the MGC2, and finally in the MGC1.
  • a new service is established between the MGW11 and the MGW22 under the MGC2. If the communication quality between the MGW11 and the MGW22 is not detected, the MGC1 can only detect the communication quality between the MGW11 and the MGW22. If the communication quality is good, the MGC1 carries the new service on the MGW11.
  • the MGC1 On the bearer path between the MGW and the MGW22, if the communication quality is poor, the MGC1 avoids the bearer path of the MGW11 to the MGW22, and selects the MGW11 with good communication quality to the MGW of the other softswitch. The newly added service is returned to the MGW 22 in the MGC 2, and finally a new service is established between the MGW 11 under the MGC 1 and the MGW 22 under the MGC 2 .
  • the system includes a service bearer unit (for example, MGW in this figure) and a service control unit (for example, MGC in this figure), where the service bearer unit is provided with a monitoring unit for monitoring the service bearer unit. a service quality parameter of the carried service flow, and reporting the monitoring result to the service control unit; the service control unit is provided with a path control unit, configured to use the service quality status reflected by the monitoring result reported by the monitoring unit as a service Select a bearer path with better service quality.
  • a service bearer unit for example, MGW in this figure
  • MGC service control unit
  • the foregoing monitoring unit may also be disposed on a device other than the bearer unit, or may be independently set; the path control unit may also be disposed on a device other than the service control unit, or may be independently set.
  • the service quality parameter of the service flow monitored by the monitoring unit is: the quality of service parameter of the service flow carried by the bearer path between the service bearer units belonging to the same service control unit; or: the service bearer unit of a service control unit and The quality of service parameter of the service flow carried by the bearer path between the service bearer units of other service control units.
  • the service flow monitored by the monitoring unit is: sampling at least one service flow selected on the bearer path.
  • the quality of service parameters monitored by the above monitoring unit are: for the packet service, the packet loss rate, delay, jitter, number of services parameters, or any combination of the foregoing four for the packet service; for the circuit service, the interrupt parameter of the circuit service .
  • the service quantity parameters include: the number of service channels, the effective bandwidth, or the number of valid net bytes received, or any combination of the three; wherein the interrupt parameters include available time parameters and interrupt frequency parameters.

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Description

软交换网络中的业务处理方法和处理系统 技术领域
本发明涉及软交换网络中的服务质量控制技术, 尤其涉及软交换网 络中为提高业务的质量进行的业务处理方法和业务处理系统。 发明背景 软交换网络是利用软交换技术建立的网络,其中关键的软交换设 备为媒体网关 (MGW, Media Gateway ) 和媒体网关控制器 (MGC, Media Gateway Controller ) 。 其中 MGW作为语音业务、 多媒体业务 和窄带数据业务的承载设备,完成不同网络之间的业务流格式转换和 承载处理功能; MGC是独立于传送网络的核心设备, 主要完成呼叫 控制、 资源分配、 协议处理、 路由、 认证、 计费等主要功能, 同时可 以向用户提供现有电路交换机所能提供的所有业务。 图 1 为一种软交换网络的设备连接示意图。 参见图 1, MGW1 和 MGW2为业务通信双方的媒体网关, 承载着至少一个业务呼叫, 每个业务呼叫都对应一个业务通道供该业务呼叫使用。 MGC可以为 软交换服务器 (Softswitch Server ) 、 移动交换中心服务器 ( MSC Server )、下一代网络服务器( NGN Server )、或类移动交换中心( MSCe ) 等。
在不同的软交换系统中, MGC对应为不同的设备, 且各个软交 换设备间的通信协议有所区别, 例如在宽带码分多址( WCDMA ) 系 统中, MGC为 MSC Server, MGW之间通过 Nb协议通信, MGW与 MSC Server之间通过 Mc协议进行通信, MGC之间通过 Nc协议进 行通信。 再如在 CDMA2000系统中, MGC为 MSCe, MGW之间通 过 YYp协议进行通信, MGW与 MSCe之间通过 39协议进行通信, MSCe之间通过 ZZp协议进行通信。 MGW还可与其他设备(例如分 組业务设备、 电路业务设备等)进行业务通信。 如果 MGW与分组业 务设备进行业务通信, 则在该 MGW上承载分组业务。 软交换网络在承载业务流时, 由于 MGW资源不足、数据带宽不 足、 数据损伤等原因会导致两个 MGW 间承载的业务的服务质量变 差, 例如丟包率高、 时延较大、 抖动频繁。 此时, 如果软交换设备不 对业务流的流量进行控制, 所有业务的服务质量(QoS )都得不到保 障。
现有技术中, 只是在国际电讯联盟 (ITU ) H . 248中公开了一 种质量告警 ( Quality Alert ) 和质量告警停止 ( Quality Alert Cease ) 的方案, 用于在 MGW对间的业务流质量变差时, 发出告警。
但是,现有技术还没有一种当 MGW对之间承载的分组服务盾量 变差时进行流量控制的技术方案。一旦 MGW对之间的分组服务盾量 变差, 则所有分组业务的服务质量都得不到保障, 尤其是服务质量要 求高的实时分组业务。
另外, 在实际承载业务的过程中, 软交换网络的业务质量可能会 产生波动的情况。 原因在于, 在同一个软交换局或不同软交换局内的 不同 MGW, 通常有多条承载路径。 业务可以选择其中任意一条承载 路径承载。 如果在带宽较窄的承载路径上承载较多的业务, 就会使得 该路径上的业务质量恶化。 如果在巳有业务质量恶化的情况下, 再增 加业务, 则总的业务质量只会更加恶化。 因此, 在实际承载业务的过 程中, 软交换网络的业务质量可能会因为承载业务的多少、 带宽的大 小等因素的影响, 产生波动的情况。 但是到目前为止,尚未针对如何避免在业务质量不佳的承载路径 上增加业务而导致总的业务质量进一步恶化的问题提出一种有效的 解决方法。 发明内容
有鉴于此,本发明的主要目的在于提供一种软交换网络中的业务 处理方法和处理系统,根据业务承载单元承载的业务质量对业务的流 量进行控制, 从而保证所承载业务的服务质量。
本发明还提供了另一种软交换网络中的业务处理方法和处理系 统, 根据业务承载单元承载的业务质量对新增业务的路由进行选择, 使得所选路由可以避开承载质量差的承载路径,保障所承载业务的服 务质量。
为了实现上述目的, 本发明的技术方案为:
一种软交换网絡中的业务处理方法, 该方法包括:
业务承载单元监测所承载的业务流的服务质量参数;
业务承载单元将监测结果上报给业务控制单元;
业务控制单元根据监测结果所反映的服务质量状况对业务的流 量进行控制。
优选地,所述业务承载单元监测所承载的业务流的服务质量参数 的方法为:
对业务流中的全部或部分业务通道的服务质量参数进行监测,对 所监测到的各业务通道的服务质量参数进行采样,得到业务流的服务 质量参数。
优选地, 所述对业务通道的服务质量参数进行监测是: 对于分组 业务, 是对业务通道的丟包率、 延时、 抖动、 业务数量参数、 或前述 四者的任意组合进行监测; 对于电路业务, 是对电路业务的中断参数 进行监测。
优选地, 所述业务数量参数包括: 业务通道数、 有效带宽、 或所 接收的有效净字节数、 或三者的任意组合。
优选地, 所述中断参数中包括可用时间参数和中断频度参数。 优选地, 所述根据监测结果对业务的流量进行控制是:
根据上报的业务数量参数计算当前可承载的有效通道数,如果当 前业务通道总数大于该有效通道数, 则对当前总业务通道数进行限 制, 使当前总业务通道数等于或小于有效通道数。
优选地, 该方法进一步包括: 所述业务承载单元将监测结果与预 先设定的服务质量参数的等级门限值进行比较,确定当前服务质量的 等级, 并在上报的监测结果中携带当前服务质量的等级信息;
所述业务控制单元根据监测结果对业务的流量进行控制是:查询 预定的服务质量等级与业务通道限制比例的对应关系,确定当前上报 的服务质量等级对应的业务通道限制比例,以该比例对当前接入的业 务通道数进行限制。
优选地,所述业务控制单元根据监测结果对业务的流量进行控制 是:
将上报的监测结果与预先设定的服务质量等级门限值进行比较, 确定当前服务质量的等级;再查询预定的服务质量等级与业务通道限 制比例的对应关系, 确定当前服务质量等级对应的业务通道限制比 例, 以该比例对当前接入的业务通道数进行限制。
优选地, 所限制的业务通道为分组业务通道或者为电路业务通 道。 优选地, 所述对业务通道数进行限制的方法为: 拒绝新业务通道 的建立、 或关闭优先级较低的业务通道。
优选地, 所控制的业务流量为分组业务的流量, 且所述根据监测 结杲所反映的服务质量状况对业务的流量进行控制是:根据监测结果 判断服务质量状况是否下降,如果下降则降低分组业务通道所需的带 宽。
优选地, 所述降低分组业务通道所需的带宽的方法是: 采用比原 有编码方式占用带宽更小的编码方式对分组业务通道中的分组业务 进行编码、 或降低编码的码率、 或增大分组业务的分组尺寸。
优选地, 所述业务承载单元将监测结果上报给业务控制单元是: 采用定时上报的方式;
或者采用触发上报的方式,在业务承载单元中设置服务质量参数 的门限值, 如果判定所监测的服务质量状况到达该门限值时, 则触发 上报监测结果。
优选地, 所述的业务承载单元为媒体网关, 所述的业务控制单元 为媒体网关控制器。
一种软交换网络中的业务处理系统,包括业务承载单元和业务控 制单元, 该系统还包括:
监测单元,用于监测业务承载单元所承载的业务流的服务质量参 数, 并将监测结果上报给业务控制单元;
流量控制单元,用于根据所述监测单元上报的监测结果所反映的 服务质量状况对业务的流量进行控制。
优选的,所述监测单元所监测的服务质量参数是:对于分組业务, 是业务通道的丟包率、 延时、 抖动、 业务数量参数、 或前述四者的任 意组合; 对于电路业务, 是电路业务的中断参数。 优选的, 所述业务数量参数包括: 业务通道数、 有效带宽、 或所 接收的有效净字节数、 或前三者的任意组合。
优选的, 所述中断参数中包括可用时间参数和中断频度参数。 优选的, 所述的业务承载单元为媒体网关, 所述的业务控制单元 为媒体网关控制器。
一种软交换网络中的业务处理方法, 该方法包括:
业务承载单元监测所承载的业务流的服务质量参数;
业务承载单元将监测结果上报给业务控制单元;
业务控制单元根据监测结果所反映的服务质量状况为业务选择 服务质量较好的承载路径。
优选地 ,所述业务承载单元监测所承载的业务流的服务廣量参数 具体为:对属于同一个业务控制单元的业务承载单元之间的承载路径 所承载业务流的服务质量参数进行监测;
或者为:对一个业务控制单元的业务承载单元与其他业务控制单 元的业务承载单元之间的承载路径所承载业务流的服务质量参数进 行监测。
优选地, 所述业务承载单元所监测的业务流为: 在所述承载路径 上抽样选取的至少一个业务流。
优选地, 所述对业务流的服务质量参数进行监测是: 对于分组业 务, 是对业务通道的丢包率、 延时、 抖动、 业务数量参数、 或前述四 者的任意组合进行监测; 对于电路业务, 是对电路业务的中断参数进 行监测。
优选地, 所述业务数量参数包括: 业务通道数、 有效带宽、 或所 接收的有效净字节数、 或三者的任意组合。
优选地, 所述中断参数包括可用时间参数和中断频度参数。 优选地, 所述业务承载单元将监测结果上报给业务控制单元是: 采用定时上^ =艮的方式;
或者采用触发上报的方式,在业务 载单元中设置服务质量参数 的门限值, 如果判定所监测的服务质量状况到达该门限值时, 则触发 上报监测结果。
优选地, 所述的业务承载单元为媒体网关, 所述的业务控制单元 为媒体网关控制器。
一种软交换网絡中的业务处理系统,包括业务承载单元和业务控 制单元, 该系统还包括:
监测单元,用于监测业务承载单元所承载的业务流的服务质量参 数, 并将监测结果上报给业务控制单元;
路径控制单元,用于根据所述监测单元上报的监测结果所反映的 服务质量状况为业务选择服务质量较好的承载路径。
所述监测单元所监测的业务流的服务质量参数为:属于同一个业 务控制单元的业务承载单元之间的承载路径所承载业务流的服务质 量参数;
或者为:一个业务控制单元的业务承载单元与其他业务控制单元 的业务承载单元之间的承载路径所承载业务流的服务质量参数。
优选的, 所述监测单元所监测的业务流为: 在所述承载路径上抽 样选取的至少一个业务流。
优选的,所述监测单元所监测的服务质量参数是:对于分组业务, 是业务通道的丟包率、 延时、 抖动、 业务数量参数、 或前述四者的任 意组合; 对于电路业务, 是电路业务的中断参数。
优选的, 所述业务数量参数包括: 业务通道数、 有效带宽、 或所 接收的有效净字节数、 或三者的任意组合。 优选的, 所述中断参数包括可用时间参数和中断频度参数。 优选的, 所述的业务承载单元为媒体网关, 所述的业务控制单元 为媒体网关控制器。
相对于现有技术,由于本发明的第一种方法和系统由业务承载单 元监测业务流的服务质量, 将监测结果上报给业务控制单元, 业务控 制单元才 Μ居监测结果对业务的流量进行控制, 因此可以保证部分业务 (尤其是服务质量要求较高的分組业务)的质量。 尤其是当服务盾量 变差时, 可以通过限制业务通道总数、 降低业务通道所需的带宽等方 式对部分业务的流量进行限制, 从而提高业务的质量。
相对于现有技术,本发明的第二种方法和系统由业务承载单元监 测业务流的服务质量, 将监测结果上报给业务控制单元, 业务控制单 元根据监测结果将新增业务建立在承载质量良好的承载路径上,使得 所选路由可以避开承载质量差的承载路径,保障所承载业务的服务质 量。 另外, 因为同一承载路径中各业务的传输质量是相似的, 所以在 监测时只需要抽样监测少数几个业务就可以知道局内两个媒体网关 之间或某个对外局向上的承载路径传输质量, 因为监测的是已建立的 业务, 所以不会增加额外的流量, 只需要媒体网关增加少量的统计和 上报工作即可, 改造成本低。
另外, 由于本发明所述的方法只对局部软交换设备 (MGC 和 MGW ) 进行改造, 无需全软交换网络、 或其它软交换设备的配合, 因此可以在保证分组服务质量的同时, 减少对现有网络的沖击, 降低 网络升级的成本。 附图简要说明
图 1为一种软交换网络的设备连接示意图; 图 2 为本发明笫一种方法所述在软交换网络中对业务进行流量 处理的流程图;
图 3 为本发明第一种方法所对应的一种软交换网络中的业务处 理系统的示意图;
图 4 为本发明第二种方法所述在软交换网络种对业务进行路由 处理的流程图;
图 5为一种软交换网络通过分组网连接的示意图;
图 6 为本发明第二种方法所对应的一种软交换网络中的业务处 理系统的示意图。 实施本发明的方式
下面参照附图对本发明的具体实施例进行说明。
参见图 1 , 当 MGW承载业务流时, 由于 MGW资源不足、 数据 带宽不足、数据损伤等原因会导致 MGW1和 MGW2间承载的业务的 服务廣量变差。因此本发明可在 MGW上对业务流的服务质量进行监 测, 并将监测结果上报给与其相连的 MGC上, 由 MGC根据监测结 果所反映的服务质量状况对该 MGW 所承载的业务的流量进行控制 或者为新增业务选择服务质量好的承载路径。
图 2为本发明所述第一种方法在软交换网络中对业务进行处理的 流程图。 参见图 2, 该流程包括:
步骤 201、 MGW监测所承载的业务流的总服务质量参数; 本步骤中, MGW 可以对所承载的所有业务通道的服务质量进行 监测; 或者,只对所承载的部分业务通道的服务盾量进行监测,此处, 由于一个 MGW可以与多个其他的 MGW (包括本 MGW归属 MGC 所辖内的其他 MGW, 以及本 MGW归属 MGC所辖外的其他 MGW ) 进行通信而组成 MGW对,本 MGW与其他 MGW組成的每一个 MGW 对中都可能承载着多个业务通道,所以此处可以监测每个 MGW对中 所承载的多个业务通道中的 1 N个业务通道, 其中 N为大于或等于 1的整数; 至于具体监测哪个业务通道, 可以由 MGC确定, 即: 当 一个业务通道接入时, MGC通过 He接口, 向 MGW发送服务质量监 控命令,指示 MGW监测该业务通道;或者需监测的业务通道由 MGW 自行确定, 即将需要监测的业务通道标识预先配置在 MGW中。
此处, 对需监测的各个业务通道的服务质量进行监测的内容为: 对于分组业务, 可以是对业务通道的服务质量参数, 例如: 丟包率、 延时、 抖动、 分组业务的业务数量参数、 或前述四者的任意组合随时 进行监测并记录。 其中, 所述业务数量参数可进一步包括: 业务通道 数、有效带宽, 或所接收的有效净字节数、或三者的任意组合。 MGW 可以通过记录收到有效净字节数来表示所述分组业务的有效带宽。对 于电路业务, 可以是对电路业务的中断参数进行监测, 所谓中断参数 可包含可用时间参数和中断频率参数。所述具体的监测丢包率、延时、 抖动、 业务数量参数、 以及中断参数的方法可采用现有公知的监测方 法, 此处不再赘述。
为了确定业务流的总服务质量参数, MGW在建立所监测的业务 时下发所述服务盾量参数,并对所监测的各个业务通道的服务质量参 数进行采样,得到能反映本 MGW所承载的分组业务流服务质量状况 的总服务质量参数, 其中包括总体的丟包率、 延时、 抖动、 或业务数 量参数, 具体的采样方法可以釆用现有的技术, 例如可以采用 IETF RFC3550中公开的采样方法。
本实施例中对业务流进行监 'J以及进行流量限制都是针对每个 MGW对所承载的业务流进行的。 所以此处的总服务质量参数是指一 个 MGW对所承载的业务的总服务质量参数。
步骤 202、 MGW通过 He接口向 MGC上报月 务质量报告, 该服 务质量报告采用 He接口消息的格式,其中包括步骤 101的监测结果。
此处一种具体的上报方式为定时上报:在本 MGW中预设定时器, 根据预先设定的时间间隔在每一个定时周期上报一次服务质量报告。
另一种具体的上报方式为触发上报, 也可以称为告警方式: 在本
MGW中预设触发条件, 例如预设所监测的总服务质量参数的门限值 (例如可以设置丢包率、 延时、 抖动的量化门限值) , 并实时将监测 的总服务质量参数与该参数对应的门限值进行比较, 当所监测的服务 质量的参数到达其对应的门限值时, 则判定当前的服务质量变差, 触 发上报服务质量报告, 以向 MGC告警。 此处的门限值可以是一个, 也可以是多个分等级的门限值, 即服务质量等级门限值, 当监测的服 务质量到达某一个门限值的范围内,则触发上报对应等级的服务质量 报告, 其中携带对应服务质量等级信息, 即告警等级信息; 例如: 服 务质量告警级别可以根据总服务质量参数中的丟包率分成 0-5 个等 级, 即:
0级告警 0 % <丟包率 <2%;
1级告警 2%<丢包率 <8%;
2级告警 8%<丟包率 <25%;
3级告警 25%<丟包率 <45%;
4级告警 45%<丟包率 <75%;
5级告警 75%<丟包率 <95%。
显而易见 , 本发明也可根据延时或抖动参数将服务盾量告警级别 分为多个等级。
上述告警方式是直接为总服务质量的参数设置门限值, 本发明也 可以实时地根据所监测的总服务^量参数中的丟包率、 延时、抖动等 参数利用现有的综合确定方法综合确定反映服务质量的 Qos值,此处 可以采用 ITU-T P.861公开的综合确定 Qos的方法, 在 MGW中预设 Qos的门限值,实时地将确定的 Qos值与对应的 Qos门限值进行比较, 当 Qos值到达其对应的门限值时, 则触发上报服务质量报告; 同上述 的丟包率类似, 此处也可设定多个等级的 Qos门限值, 当监测的 Qos 值到达某一个门限值的范围内, 则触发上报对应等级的服务质量报 告, 其中携带对应的告警等级信息。
步骤 203、 MGC根据 MGW上报的监测结果所反映的服务质量状 况对该 MGW所承载的业务的流量进行控制。可以对分组业务的流量 进行控制, 也可以对电路业务的流量进行控制。
本步骤对流量进行控制的方式可以有以下几种具体方式: 第一种流量控制方式: 如果 MGW上报的监测结果中包括业务数 量参数, 则根据业务数量参数计算确定当前可承载的有效通道数, 例 如计算方法为: 利用当前的有效带宽除以目前业务的编码带宽, 得到 的值为有效通道数, 所述的业务编码带宽可以预先设置在 MGC中; 例如: 当 MGW服务质量报告中上报的有效带宽为 27600kpbs, 而目 前业务是语音业务, 采用 G.729编码 (一个数据包中包含 20ms的语 音数据), G.729 的编码带宽为 27.6kbps , 则有效通道数为 27600/27.6=1000个。 确定有效通道数后, MGC 判断当前的业务 通道总数(该业务通道总数在 MGC中有记录)是否大于所述的有效 通道数, 如果是, 则限制部分业务的业务通道, 使当前总业务通道数 等于或小于有效通道数, 从而控制了业务流量; 否则, 不对业务通道 数进行控制。所述限制的方式为:拒绝新业务通道的建立;或在 MGC 中预先设定各个业务通道的优先级, 当服务质量变差时, 关闭优先級 较低的业务通道。
第二种流量控制方式:在 MGC中预设告警等级与业务通道限制比 例的对应关系,该业务通道的限制比例为所限制的业务通道数占总业 务通道数的比例, 例如:
0级告警不限制业务通道的接入;
1级告警限制占业务通道总数 5%的业务通道接入;
2级告警限制占业务通道总数 20%的业务通道接入;
3级告警限制占业务通道总数 40%的业务通道接入;
4级告警限制占业务通道总数 70%的业务通道接入;
5级告警限制占业务通道总数 90%的业务通道接入。
如果 MGW 上报的服务质量报告中包括告警等级信息, 则 MGC 查询所述的告警等級与业务通道限制比例的对应关系,确定上报的告 警等级对应的业务通道限制比例,以该比例对当前接入的业务通道进 行限制, 以提高 MGW的服务质量。
第三种流量控制方式:在 MGC中预设所监测的总服务质量参数的 门限值,此处的设置方法与上述在 MGW设置总服务质量参数的门限 值相同; 当 MGC收到 MGW上报的总服务质量参数后, 将该总服务 质量参数与该参数对应的门限值进行比较, 当所监测的服务质量的参 数到达其对应的门限值时, 则判定当前的服务质量变差, 按照预设的 业务通道限制比例对当前接入的业务通道进行限制。
与上述 MGW相同, 此处的门限值可以是一个, 也可以是多个分 等级的门限值, 当 MGC所收到的总服务质量参数到达某一个门限值 的范围内, 则以该门限值的等级作为当前服务质量的等级; 在设置多 个服务质量等级门限值的情况下, 还需在 MGC中预先设置服务质量 等级与业务通道限制比例的对应关系, 确定当前服务质量等级后, 查 询该对应关系, 确定当前服务盾量等级对应的业务通道限制比例, 以 该比例对当前接入的业务通道进行限制。
或者, MGC根据服务质量报告中的总服务质量参数中的丟包率、 延时、 抖动等参数综合确定反映服务质量的 Qos值, 并在 MGC中预 设一个或多个 Qos的门限值, 实时地将确定的 Qos值与对应的 Qos 门限值进行比较, 当 Qos值到达其对应的门限值时, 则按照预设的业 务通道限制比例对当前接入的业务通道进行限制; 同上述在 MGW中 设置 Qos 门限值类似, 此处也可设定多个等级的 Qos 门限值, 当确 定 Qos值到达某一个门限值的范围内,则以该门限值的等级作为当前 服务质量的等级, 并查询在 MGC中预先设置的服务质量等级与业务 通道限制比例的对应关系,确定当前服务质量等级对应的业务通道限 制比例, 以该比例对当前接入的业务通道进行限制。
笫四种流量控制方式: 根据服务质量报告中的监测结果判断服务 质量状况是否下降, 如果下降则降低业务通道所需的带宽, 此处的业 务为分组业务。
与第三种流量控制方式相同,可在 MGC中预设所监测的总服务质 量参数的门限值, 当 MGC收到 MGW上报的总服务质量参数后, 将 该总服务质量参数与该参数对应的门限值进行比较, 当所监测的服务 质量的参数到达其对应的门限值时, 则判定当前的服务质量状况下 降。或者,根据服务质量报告中的总服务质量参数中的丢包率、延时、 抖动等参数综合确定反映服务质量的 Qos值, 并在 MGC中预设一个 Qos的门限值, 以 Qos值判定当前的服务质量状况是否下降。
此处, 降低分組业务通道所需的带宽的方式为: 采用比原有编码 方式占用带宽更小的编码方式对分组业务通道中的分组业务进行编 码。 例如假设在语音业务中, 原来的语音业务通道使用 G. 711编码, 当服务质量变差时, 使用 G.729、 AMR等其它占用带宽较小的语音 编码进行编码, 可以有效地降低业务通道所需的带宽, 提高 MGW所 承载分组业务的服务质量。 或者, 通过降低编码的码率来降低业务通 道所需的带宽,例如:采用 AMR编码时可以采用 4.75kbps ~ 12.2kbps 的码率, 包括 4.75、 6.7、 7.4、 12.2等多种码率。 或者, 也可通过增 大分組尺寸来降 ^业务通道所需的带宽,例如采用 10ms、 20ms ^ 30ms 等不同时长的语音单位进行打包, 随着数据包中分组尺寸越长, 导致 包数量减少, 因此包头数量减少, 使得占用带宽降低。
图 3 为上述第一种方法所对应的一种软交换网络中的业务处理系 统的示意图。 参见图 3, 该业务处理系统包括业务承载单元 (例如此 处为 MGW ) 和业务控制单元 (例如此处为 MGC ) , 其中:
所述业务承载单元上设置有监测单元, 用于监测业务承载单元所 承载的业务流的服务质量参数, 并将监测结果上报给业务控制单元; 所述业务控制单元上设置有流量控制单元, 用于根据所述监测单 元上报的监测结果所反映的服务质量状况对业务的流量进行控制。
当然, 上述监测单元也可以设置在承载单元之外的设备上, 也可 以独立设置;所述流量控制单元也可以设置在业务控制单元之外的设 备上, 也可以独立设置。
与所述第一种方法相同, 该处理系统所述监测单元所监测的服务 质量参数是: 对于分組业务, 是业务通道的丟包率、 延时、 抖动、 业 务数量参数、 或前述四者的任意組合; 对于电路业务, 是电路业务的 中断参数。
所述的业务数量参数包括: 业务通道数、 有效带宽、 或所接收的 有效净字节数、 或前三者的任意組合。 所述的中断参数中包括可用时 间参数和中断频度参数。 图 4为本发明所述第二种方法在软交换网絡中对业务进行处理的 流程图。 参见图 4, 该流程包括:
步骤 401、 MGW抽样选择业务。 由于 MGC需要检测的承载路径 是已建立了业务流的承载路径, 因此, 至少在建立业务的每条承载路 径上选取一个业务流, 以保证 MGC能获知每一条建立业务流的承载 路径的通信质量。 另外, 由于建立在同一条承载路径上的业务质量是 相似的, 因此, 只需在同一条承载路径上的业务流进行抽样, 选择一 个或几个业务流就可以通过该业务流的质量获知承载该业务的链路 质量。
步骤 402、 MGW在建立业务的同时下发服务质量参数。具体地说, 对于电路业务, 该质量参数应包含电路业务的中断参数, 中断参数中 可包含可用时间参数和中断频度参数; 对于分组业务, 该质量参数应 包含分组业务的丟包率、 延时、 抖动、 和业务数量参数, 其中, 业务 数量参数又可进一步包含业务通道数、 分组 /电路 /传输业务的有效带 宽、 或收到的有效净字节数、 或三者的任意组合。
步骤 403 , MGW上报业务质量报告给所属的 MGC。 MGW在步 骤 402中下发服务质量参数后,可以通过不同的方式监测服务质量参 数。 比如说, 随时记录该服务质量参数, 或者通过 MGC指定的监控 通道, 监控部分业务通道的该服务质量参数等。 具体的监测方法可以 利用现有公知的监测方法, 此处不再赘述。
MGW 获得服务盾量参数后, 可以定时或在预置类型的事件触发 下将该业务质量报告上报给所属的 MGC。 举例来说, 如果 MGW是 定时上报, 那么, 该 MGW就要预设定时器, 根据预先设定的时间间 隔, 定时将该业务质量报告上报给其所属的 MGC。 如果 MGW是在 预置类型的事件触发下上报, 那么, MGW就要预先设置触发事件。 比如说,在服务盾量参数中设置类似于可用时间、 中断频度、丢包率、 延时、抖动等不同的门限值, 将服务质量参数低于门限值定为触发事 件, 那么, 当业务质量发生变化, 质量参数低于门限值时, MGW就 将该业务质量报告上报给所属的 MGC。 所述的业务质量报告中的内 容可以是可用时间、 中断频度、 丢包率、 延时、 抖动、 业务通道数、 分組 /电路 /传输业务的有效带宽、 收到的有效净字节数的任意组合或 其中之一。
步骤 404, MGC估计链路质量。 由于在步骤 403 中, MGW已将 业务质量报告上报给其所属的 MGC, 那么, 该 MGC就可以根据该 业务质量报告中的内容估计出该链路的质量。 也就是说, MGC 可以 通过 MGW检测到承载路径的通信质量。
步骤 405, 当有新增业务时, MGC根据检测结果, 避开通信质量 较差的路径,选择一条通信质量较好的路径承载新增业务。由于 MGW 是在每一条承载业务的路径上至少选择了一个业务,并在建立业务的 同时下发了服务质量参数, 因此, MGC可以通过 MGW上报的业务 质量报告获知每一条承载业务的链路质量,从而可以为新增的业务选 择一条通信质量较好的承载路径。而且,由于监测的是已建立的业务, 所以不会增加额外的流量,只需要 MG W增加少量的统计和上报工作 即可, 几乎不会带来额外的成本。
上文中具体阐述了本发明第二种方法的技术方案, 下面通过两个 实施例, 进一步予以解释和说明。
首先对本发明第二种方法的第一实施例进行说明。
本发明的第一实施例是针对在同一个软交换局内, 根据承载网质 量进行路由控制的方法。
图 5为一种软交换网络通过分組网连接的示意图。 如图 5所示, MGC1控制 MGW11、 MGW12、 MGW13 , 控制接口为 Cl l、 C12和 C13, M.GW间通过分组网 1使用接口 111、 112、 113 连接在一起。 MGC1通过 C2接口可以与 MGC2进行局间通讯, 通过 12接口可以 进行局间业务传输。 类似的, MGC1可以通过 C3接口以及其他传输 接口与其他局通讯。
如果 MGC1属下的 MGW11分别与 MGC1属下的其他 MGW, 如 MGW12, MGW13等存在承载路径。 那么, MGW11就在每条已建立 业务的承载路径上抽样选择一个或几个业务,并在建立业务的同时下 发服务质量参数, 定时或通过事件触发将业务质量报告上报给 MGC 1。 因此, MGC 1可以检测 MGW11与其属下的其他 MGW之间 承载路径的通信质量。
当有新增业务, 并且该新增业务需要跨越一个 MGC1控.制下的两 个 MGW再到达另一个软交换局时, MGC1就需要才 据 MGW之间^ 载路径通信质量的检测结果选择通信质量较好的一条路径来承载该 新增业务。
比如说, 新增业务从 MGW11接入, 可以经过 111接口, 分组网 1 和 112接口, 从 MGW12经过后到达另一个软交换局 C3 , 也可以经 过 111接口, 分组网 1和 113接口, 从 MGW13经过后到达另一个软 交换局 C3。 那么, 控制 MGW11的 MGC1就需要根据 MGW11上报 的 MGW11与 MGW12之间承载路径上的业务质量 4艮告以及 MGW11 与 MGW13 之间承载路径上的业务质量报告判断哪一条承载路径的 通信质量比较好。如果 MGW11与 MGW12之间承载路径的通信质量 比较差, 而 MGW11 与 MGW13之间承载路径的通信质量比较好, MGC就避开通信质量较差的 MGW11与 MGW12之间的承载路径, 选择通信质量比较好的 MGW11与 MGW13之间的承载路径。从而保 证了新增业务的传输质量。
下面根据本发明第二种方法的原理, 对本发明第二种方法的第二 实施例进行说明。 该第二实施例是针对在不同软交换局间, 根据承载 网质量进行路由控制的方法。
如图 5所示, MGC1控制 MGW11、 MGW12、 MGW13 , 控制接 口为 Cl l、 C12和 C13 , MGW间通过分组网 1使用接口 111、 112、 113连接在一起。 MGC1通过 C2接口可以与 MGC2进行局间通讯, 通过 12接口可以进行局间业务传输。 类似的, MGC1可以通过 C3接 口以及其他传输接口与其他局通讯。
如果 MGC1属下的 MGW11分别与其他 MGC属下的其他 MGW, 如 MGW22、 MGW33等存在承载路径。 那么, MGW11 就在每条已 建立业务的承载路径上抽样选择一个或几个业务,并在建立业务的同 时下发服务质量参数, 定时或通过事件触发将业务质量报告上报给 MGC1 , MGC1通过业务质量艮告检测 MGW11与其他 MGC属下的 MGW之间承载路径的通信质量。 但是, 由于 MGW11与其他 MGW 处于不同的软交换局, 因此, MGC1可能无法检测到 MGW11与某个 其他软交换局内 MGW 之间承载路径的通信质量, 只能检测到 MGW11到其他软交换局的通信质量。
当有新增业务, 并且该新增业务是建立在两个不同软交换局内的 MGW时, MGC需要根据 MGW之间承载路径通信质量的检测结果 选择通信质量较好的一条路径来承载该新增业务。
比如说, 新增业务是建立在 MGC1 下的 MGW1 1 与 MGC2下的 MGW22 之间, 则 MGC1 根据局间的控制信令判断是否能检测到 MGW11 与 MGW22之间承载路径的通信盾量。 在 MGC1 能检测到 MGW11与 MGW22之间承载路径的通信质量的情况下, 如果该承载 路径的通信质量较好, 则 MGC1 将该新增业务承载在 MGW11 与 MGW22 之间的承载路径上; 如果该承载路径的通信质量较差, 则 MGC1选择一条 MGW11与 MGC2下其他 MGW间通信质量较好的 承载路径(如 MGW11与 MGW21间的承载路径), 用于承载该新增 业务, 再通过 MGC2 下其他 MGW 与 MGW22 之间的承载路径 ( MGW21与 MGW22之间的承载路径),最终在 MGC1下的 MGW11 与 MGC2 下的 MGW22之间建立新增业务。 在 MGC1 无法检测到 MGW11与 MGW22之间 载路径的通信质量, 只能检测到 MGW11 到 MGW22所在软交换局间的通信质量情况下, 如果通信质量较好, MGC1就将该新增业务承载在 MGW11 与 MGW22之间的承载路径 上; 如果通信质量较差, MGC1就避开 MGW11到 MGW22所在软交 换局的承载路径, 选择通信质量较好的 MGW11 到其他软交换局内 MGW 的承载路径, 用于承载该新增业务, 再迂回到 MGC2 中的 MGW22,最终在 MGC1下的 MGW11与 MGC2下的 MGW22之间建 立新增业务。
图 6为本发明第二种方法所对应的一种软交换网络中的业务处理 系统的示意图。 参见图 6, 该系统包括业务承载单元 (例如此图中为 MGW )和业务控制单元(例如此图中为 MGC ) , 其中所述业务承载 单元上设置有监测单元,用于监测业务承载单元所承载的业务流的服 务质量参数, 并将监测结果上报给业务控制单元; 所述业务控制单元 上设置有路径控制单元,用于根据所述监测单元上报的监测结果所反 映的服务质量状况为业务选择服务质量较好的承载路径。
当然, 上述监测单元也可以设置在承载单元之外的设备上, 也可 以独立设置;所述路径控制单元也可以设置在业务控制单元之外的设 备上, 也可以独立设置。 上述监测单元所监测的业务流的服务质量参数为: 属于同一个业 务控制单元的业务承载单元之间的承载路径所承载业务流的服务质 量参数; 或者为: 一个业务控制单元的业务承载单元与其他业务控制 单元的业务承载单元之间的承载路径所承载业务流的服务质量参数。
与所述第二种方法所对应, 所述监测单元所监测的业务流为: 在 所述承载路径上抽样选取的至少一个业务流。
上述监测单元所监测的服务质量参数是: 对于分组业务, 是业务 通道的丢包率、延时、抖动、业务数量参数、或前述四者的任意组合; 对于电路业务, 是电路业务的中断参数。 其中的业务数量参数包括: 业务通道数、 有效带宽、 或所接收的有效净字节数、 或三者的任意组 合; 其中的中断参数包括可用时间参数和中断频度参数。
以上所述, 仅为本发明较佳的具体实施方式, 但本发明的保护范 围并不局限于此, 任何熟悉该技术的人在本发明所揭露的技术范围 内, 可轻易想到的变化或替换, 都应涵盖在本发明的保护范围之内。

Claims

权利要求书
1、 一种软交换网络中的业务处理方法, 其特征在于, 该方法包 括:
业务承载单元监测所承载的业务流的服务质量参数;
业务承载单元将监测结果上报给业务控制单元;
业务控制单元根据监测结果所反映的服务质量状况对业务的流 量进行控制。
2、 根据权利要求 1所述的软交换网络中的业务处理方法, 其特 征在于,所述业务承载单元监测所承载的业务流的服务质量参数的方 法为:
对业务流中的全部或部分业务通道的服务质量参数进行监测,对 所监测到的各业务通道的服务质量参数进行采样,得到业务流的服务 质量参数。
3、 根据权利要求 2所述的软交换网络中的业务处理方法, 其特 征在于,所述对业务通道的服务质量参数进行监测是:对于分组业务, 是对业务通道的丟包率、 延时、 抖动、 业务数量参数、 或前述四者的 任意组合进行监测; 对于电路业务, 是对电路业务的中断参数进行监 测。
4、 根据权利要求 3所述的軟交换网络中的业务处理方法, 其特 征在于, 所述业务数量参数包括: 业务通道数、 有效带宽、 或所接收 的有效净字节数、 或三者的任意組合。
5、 根据权利要求 3 所述的软交换网络中的业务处理方法, 其特 征在于, 所述中断参数中包括可用时间参数和中断频度参数。
6、 根据权利要求 3所述的软交换网络中的业务处理方法, 其特 征在于, 所述根据监测结果对业务的流量进行控制是: 根据上报的业务数量参数计算当前可承载的有效通道数,如杲当 前业务通道总数大于该有效通道数, 则对当前总业务通道数进行限 制, 使当前总业务通道数等于或小于有效通道数。
7、 根据权利要求 1所述的软交换网络中的业务处理方法, 其特 征在于, 该方法进一步包括: 所述业务承载单元将监测结果与预先设 定的服务质量参数的等级门限值进行比较, 确定当前服务质量的等 级, 并在上报的监测结果中携带当前服务质量的等级信息;
所述业务控制单元根据监测结果对业务的流量进行控制是:查询 预定的服务质量等级与业务通道限制比例的对应关系,确定当前上报 的服务盾量等级对应的业务通道限制比例,以该比例对当前接入的业 务通道数进行限制。
8、 根据权利要求 1所述的软交换网络中的业务处理方法, 其特 征在于, 所述业务控制单元根据监测结果对业务的流量进行控制是: 将上报的监测结果与预先设定的服务盾量等级门限值进行比较, 确定当前服务质量的等级;再查询预定的服务质量等级与业务通道限 制比例的对应关系, 确定当前服务质量等级对应的业务通道限制比 例, 以该比例对当前接入的业务通道数进行限制。
9、 根据权利要求 6、 7、 或 8 所述的软交换网络中的业务处理方 法, 其特征在于, 所限制的业务通道为分组业务通道或者为电路业务 通道。
10、 根据权利要求 9 所述的软交换网络中的业务处理方法, 其 特征在于, 所述对业务通道数进行限制的方法为: 拒绝新业务通道的 建立、 或关闭优先级较低的业务通道。
11、 根据权利要求 1所述的软交换网络中的业务处理方法, 其特 征在于, 所控制的业务流量为分组业务的流量, 且所述根据监测结果 所反映的服务质量状况对业务的流量进行控制是:根据监测结果判断 服务质量状况是否下降, 如果下降则降低分组业务通道所需的带宽。
12、 根据权利要求 11 所述的软交换网络中的业务处理方法, 其 特征在于, 所述降低分組业务通道所需的带宽的方法是: 采用比原有 编码方式占用带宽更小的编码方式对分组业务通道中的分组业务进 行编码、 或降低编码的码率、 或增大分组业务的分组尺寸。
13、 ^^据权利要求 1至 8任一项、 或 11、 或 12所述的软交换网 络中的业务处理方法, 其特征在于, 所述业务承载单元将监测结果上 报给业务控制单元是:
采用定时上报的方式;
或者采用触发上报的方式,在业务承载单元中设置服务质量参数 的门限值, 如果判定所监测的服务质量状况到达该门限值时, 则触发 上报监测结果。
14、 根据权利要求 1至 8任一项、 或 11、 或 12所述的软交换网 络中的业务处理方法,其特征在于,所述的业务承载单元为媒体网关, 所述的业务控制单元为媒体网关控制器。
15、 一种软交换网络中的业务处理系统, 包括业务承载单元和业 务控制单元, 其特征在于, 该系统还包括:
监测单元,用于监测业务承载单元所承载的业务流的服务质量参 数, 并将监测结果上报给业务控制单元;
流量控制单元,用于根据所述监测单元上报的监测结果所反映的 服务质量状况对业务的流量进行控制。
16、 根据权利要求 15所述的软交换网络中的业务处理系统, 其 特征在于, 所述监测单元所监测的服务质量参数是: 对于分组业务, 是业务通道的丢包率、 延时、 抖动、 业务数量参数、 或前述四者的任 意组合; 对于电路业务, 是电路业务的中断参数。
17、 根据权利要求 16 所述的软交换网络中的业务处理系统, 其 特征在于, 所述业务数量参数包括: 业务通道数、 有效带宽、 或所接 收的有效净字节数、 或前三者的任意组合。
18、 根据权利要求 16 所述的软交换网络中的业务处理系统, 其 特征在于, 所述中断参数中包括可用时间参数和中断频度参数。
19、根据权利要求 15至 18任一项所述的软交换网络中的业务处 理系统, 其特征在于, 所述的业务承载单元为媒体网关, 所述的业务 控制单元为媒体网关控制器。
20、 一种软交换网络中的业务处理方法, 其特征在于, 该方法包 括:
业务承载单元监测所承载的业务流的服务质量参数;
业务承载单元将监测结果上报给业务控制单元;
业务控制单元根据监测结果所反映的服务质量状况为业务选择 服务质量较好的承载路径。
21、 根据权利要求 20 所述的软交换网络中的业务处理方法, 其 特征在于,所述业务承载单元监测所承载的业务流的服务质量参数具 体为:对属于同一个业务控制单元的业务承载单元之间的承载路径所 承载业务流的服务质量参数进行监测;
或者为:对一个业务控制单元的业务承载单元与其他业务控制单 元的业务承载单元之间的承载路径所承载业务流的服务质量参数进 行监测。
22、 根据权利要求 21 所述的软交换网络中的业务处理方法, 其 特征在于, 所述业务承载单元所监测的业务流为: 在所述承载路径上 抽样选取的至少一个业务流。
23、 根据权利要求 20所述的软交换网络中的业务处理方法, 其 特征在于,所述对业务流的服务质量参数进行监测是:对于分组业务, 是对业务通道的丟包率、 延时、 抖动、 业务数量参数、 或前述四者的 任意组合进行监测; 对于电路业务, 是对电路业务的中断参数进行监 测。
24、 根据权利要求 23 所述的软交换网络中的业务处理方法, 其 特征在于, 所述业务数量参数包括: 业务通道数、 有效带宽、 或所接 收的有效净字节数、 或三者的任意组合。
25、 根据权利要求 23 所述的软交换网络中的业务处理方法, 其 特征在于, 所述中断参数包括可用时间参数和中断频度参数。
26、根据权利要求 20至 25任一项所述的软交换网络中的业务处 理方法, 其特征在于, 所述业务承载单元将监测结果上报给业务控制 单元是:
采用定时上报的方式;
或者采用触发上报的方式,在业务承载单元中设置服务质量参数 的门限值, 如果判定所监测的服务质量状况到达该门限值时, 则触发 上报监测结果。
27、根据权利要求 20至 25任一项所述的软交换网络中的业务处 理方法, 其特征在于, 所述的业务承载单元为媒体网关, 所述的业务 控制单元为媒体网关控制器。
28、 一种软交换网络中的业务处理系统, 包括业务承载单元和业 务控制单元, 其特征在于, 该系统还包括:
监测单元,用于监测业务承载单元所承载的业务流的服务质量参 数, 并将监测结果上报给业务控制单元; 路径控制单元,用于根据所述监测单元上报的监测结果所反映的 服务质量状况为业务选择服务质量较好的承载路径。
29、 根据权利要求 28 所述的软交换网络中的业务处理系统, 其 特征在于, 所述监测单元所监测的业务流的服务质量参数为: 属于同 一个业务控制单元的业务承载单元之间的承载路径所承载业务流的 服务质量参数;
或者为:一个业务控制单元的业务承载单元与其他业务控制单元 的业务承载单元之间的承载路径所承载业务流的服务质量参数。
30、 根据权利要求 29 所述的软交换网络中的业务处理系统, 其 特征在于, 所述监测单元所监测的业务流为: 在所述承载路径上抽样 选取的至少一个业务流。
31、 根据权利要求 28所述的软交换网络中的业务处理系统, 其 特征在于, 所述监测单元所监测的服务质量参数是: 对于分组业务, 是业务通道的丢包率、 延时、 抖动、 业务数量参数、 或前述四者的任 意组合; 对于电路业务, 是电路业务的中断参数。
32、 根据权利要求 31 所述的软交换网络中的业务处理系统, 其 特征在于, 所述业务数量参数包括: 业务通道数、 有效带宽、 或所接 收的有效净字节数、 或三者的任意组合。
33、 根据权利要求 31 所述的软交换网络中的业务处理系统, 其 特征在于, 所述中断参数包括可用时间参数和中断频度参数。
34、根据权利要求 28至 33任一项所述的软交换网络中的业务处 理系统, 其特征在于, 所述的业务承载单元为媒体网关, 所述的业务 控制单元为媒体网关控制器。
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Citations (3)

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US20040022223A1 (en) * 2002-08-05 2004-02-05 Harris Corporation Monitoring link quality in a mobile ad hoc network
WO2005002156A1 (en) * 2003-05-30 2005-01-06 Vidiator Enterprises Inc. Method and apparatus for dynamic bandwidth adaptation
CN1599453A (zh) * 2003-09-17 2005-03-23 联想(北京)有限公司 动态调整视频传输的方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040022223A1 (en) * 2002-08-05 2004-02-05 Harris Corporation Monitoring link quality in a mobile ad hoc network
WO2005002156A1 (en) * 2003-05-30 2005-01-06 Vidiator Enterprises Inc. Method and apparatus for dynamic bandwidth adaptation
CN1599453A (zh) * 2003-09-17 2005-03-23 联想(北京)有限公司 动态调整视频传输的方法

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