WO2007048310A1 - Procede, systeme et appareil de synchronisation du flux entre la couche de commande support et les appareils de la couche support - Google Patents

Procede, systeme et appareil de synchronisation du flux entre la couche de commande support et les appareils de la couche support Download PDF

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Publication number
WO2007048310A1
WO2007048310A1 PCT/CN2006/002541 CN2006002541W WO2007048310A1 WO 2007048310 A1 WO2007048310 A1 WO 2007048310A1 CN 2006002541 W CN2006002541 W CN 2006002541W WO 2007048310 A1 WO2007048310 A1 WO 2007048310A1
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WO
WIPO (PCT)
Prior art keywords
stream
information
flow
record
management server
Prior art date
Application number
PCT/CN2006/002541
Other languages
English (en)
French (fr)
Inventor
Wei E
Rui Xu
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
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to EP06791130A priority Critical patent/EP1936865B1/en
Priority to AT06791130T priority patent/ATE552670T1/de
Publication of WO2007048310A1 publication Critical patent/WO2007048310A1/zh
Priority to US12/108,268 priority patent/US8160052B2/en

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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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • H04L47/78Architectures of resource allocation
    • H04L47/781Centralised allocation of resources
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1069Session establishment or de-establishment

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, system, resource management server, and bearer layer device for synchronizing a flow between a bearer control layer and a bearer layer device.
  • the IP network can carry services that meet the needs of telecom operations by effectively managing and rationally using IP network resources.
  • the resource management server (RM) of the bearer control layer sends a Quality of Service (QoS) control command to the edge router (ER) of the bearer layer to complete the traffic classification, and the label stack pressure. Waiting for work.
  • QoS Quality of Service
  • the call agent delivers the QoS resource request required by the RM.
  • the RM sends a flow installation message to the ER.
  • the ER stream is successfully installed, The user's call is successful.
  • the call agent notifies the RM to release the QoS resource, and the RM notifies the ER to delete the corresponding information.
  • the QoS control command issued by the RM can be simply referred to as a flow.
  • the RM sends or deletes the stream on the ER according to the requirements of the service control.
  • the ER adds or deletes the stream record on the device by processing the RM command.
  • the flow record between the RM and the ER is prone to deviation.
  • the flow records of the RM and the ER must be consistent, and the flow record in the RM should be taken as the standard.
  • the traffic of one of the two parties cannot be released after the flow fails. As a result, the flow entries of the two parties are inconsistent and the resources are hanged.
  • the prior art related to the present invention is: Whether the flow entries are consistent between the RM and the ER, and then the RM deletes all the flows on the ER at the appropriate time and re-issues the flow records to the ER to ensure the consistency of the flow records of the two parties.
  • the above check can be initiated periodically or initiated by the RM.
  • the prior art 1 has the following drawbacks:
  • the deletion operation in the method can only be performed when the service is less.
  • the technical solution of the prior art 2 related to the present invention is as follows: The third party queries the flow table entry of the ER, and then notifies the RM to delete the unnecessary flow, so as to ensure the consistency of the flow records of the two parties.
  • the prior art 2 has the following drawbacks:
  • the object of the present invention is to provide a method and system for synchronizing the flow between the bearer control layer and the bearer layer device.
  • the technical solution provided by the present invention not only the RM and ER inter-flow records can be guaranteed without interrupting the service.
  • the consistency, and the synchronous operation is not limited by time.
  • the present invention does not need to add an additional interface to the RM and the ER, and the operation of maintaining the consistency of the flow record is simple and easy to expand.
  • the present invention provides a method for synchronizing a flow between a bearer control layer and a bearer layer device, including: the bearer layer device ER returns a corresponding flow record according to the flow synchronization information sent by the resource management server RM on the bearer control layer. Said resource management server RM;
  • the resource management server RM compares the flow record returned by the bearer layer device ER with the stream record saved by itself, and performs information about the synchronization required in the bearer layer device ER according to the comparison result. Stream synchronization processing.
  • the process in which the ER returns flow information to the RM includes:
  • the resource management server RM sends the stream synchronization information to the bearer layer device ER through the flow synchronization request message;
  • the bearer layer device ER returns a corresponding stream record to the resource management server RM according to the stream synchronization information.
  • the process in which the ER returns flow information to the RM includes:
  • the resource management server RM sends the flow synchronization information to the bearer layer device ER by using the flow synchronization request message, where the flow synchronization information carries the flag information of the flow that needs to be synchronized;
  • the process in which the ER returns flow information to the RM includes:
  • the resource management server sends a policy to the bearer layer device ER, and the packet carries information that needs to be synchronized.
  • the bearer layer device ER returns a corresponding stream record to the resource management server RM according to the information of the stream synchronization.
  • the process in which the ER returns flow information to the RM includes:
  • the resource management server RM sends a policy to the bearer layer device ER, where the packet carries information that needs to be synchronized, and carries the flag information of the stream to be synchronized in the information; Checking whether there is a flow carrying the flag information, and if not, returning an end message to the resource management server RM; otherwise, selecting a flow record carrying the flag information, and returning it to the resource management server RM .
  • the process in which the ER returns flow information to the RM further includes:
  • the bearer layer device ER After the bearer layer device ER returns the flow record to the resource management server RM, the resource management service is provided to the resource management server. RM returns an end message;
  • the resource management server RM confirms that the process of the bearer layer device ER returning the stream record ends according to the received end message.
  • the process of the resource management server RM performing synchronization processing includes:
  • the resource management server RM receives the flow record returned by the bearer layer device ER, and searches for the flow record returned by the bearer layer device ER in the stream record saved by itself, and if not, notifies the ER to delete the corresponding flow record; otherwise
  • the flow record returned by the bearer layer device ER is compared with the corresponding flow record saved by the bearer layer device. If the flow record is inconsistent, the corresponding flow record is sent to the bearer layer device ER, and the bearer layer device ER is notified to update the corresponding flow record. Otherwise, no processing is done.
  • the method further includes: the bearer layer device ER performing corresponding deletion or update processing according to the received notification, and returning the processing result information to the resource management server RM.
  • the method further includes: the resource management server RM receiving the processing result information returned by the bearer layer device ER, and after determining, according to the processing result information, that the bearer layer device ER has successfully synchronized the corresponding stream record, ending the synchronization process; Otherwise, the new stream synchronization information is sent to the bearer layer device ER.
  • the present invention further provides a system for synchronizing a flow between a bearer control layer and a bearer layer device, including: a bearer layer device ER and a resource management server RM, wherein the RM is provided with a request module and a judging module, and the ER is provided with a response module and a synchronization processing module;
  • Request module used to send stream synchronization information to the ER
  • the response module returns the corresponding flow record to the RM according to the flow synchronization information sent by the requesting module; the determining module is configured to compare the flow record returned by the response module with the flow record saved by the RM, and notify the ER to perform stream synchronization processing according to the comparison result. ;
  • the synchronization processing module is configured to perform stream synchronization processing on the information that needs to be synchronized in the ER according to the notification of the determining module.
  • the response module returns a corresponding flow record to the RM according to the flag information of the stream it receives.
  • the response module returns to the RM to save it. All the flow records.
  • the response module After returning the flow record to the RM, the response module returns an end message to the resource management server RM, and the response module determines that the flag information of the stream transmitted by the request module does not exist in the stream record saved by the ER, and returns an end message to the resource management server RM.
  • the notification synchronization processing module deletes the corresponding flow record; and the determining module determines that when the flow record returned by the response module exists in the flow record determined by the RM, The judging module compares the returned stream record with the corresponding stream record saved by the RM. If not, the corresponding stream record is sent to the synchronization processing module, and the synchronization processing module is notified to update the corresponding stream record; if they are consistent, Then the judgment module does not process.
  • the synchronization processing module After the synchronization processing is completed, the synchronization processing module returns the processing result information to the RM, and the requesting module receives the processing result information returned by the bearer layer device ER, and after determining, according to the processing result information, that the bearer layer device ER has successfully synchronized the corresponding stream record, Then, the synchronization process ends; otherwise, new stream synchronization information is sent.
  • the present invention also provides a resource management server, where the resource management server RM is provided with a request module and a determination module;
  • Request module used to send stream synchronization information to the ER
  • the judging module is configured to compare the stream record returned by the ER with the stream record saved by the RM, and notify the ER to perform stream synchronization processing according to the comparison result.
  • the present invention further provides a bearer layer device, wherein the bearer layer device ER is provided with a response module and a synchronization processing module;
  • the response module returns a corresponding flow record to the RM according to the flow synchronization information delivered by the resource management server RM;
  • Synchronization processing module used for the synchronization of the ER according to the notification of the resource management server RM The information is stream synchronized.
  • the bearer layer device ER of the present invention returns corresponding information to the resource management server RM according to the flow synchronization information sent by the resource management server RM on the bearer control layer;
  • the management server RM confirms that the information returned by the bearer layer device ER has information that needs to be synchronized, it compares with the corresponding stream record saved by itself, and performs stream synchronization processing on the information that needs to be synchronized in the bearer layer device ER according to the comparison result.
  • the present invention it is not necessary for the RM to delete all the flows on the ER at an appropriate time, thereby ensuring that the services carried by all the flows are not interrupted, and the present invention can not only ensure the consistency of the RM and ER inter-flow records without interrupting the service.
  • the present invention is not limited in time when performing stream synchronization operations, and the present invention does not require an additional interface on the RM and ER, and the stream synchronization operation is simple and easy to expand.
  • FIG. 1 is a schematic diagram of an application model of an IP telecommunication network in the prior art
  • FIG. 2 is a flowchart of a method for synchronizing flows between a bearer control layer and a bearer layer device according to an embodiment of the present invention. Mode for carrying out the invention
  • the present invention provides a method and system for synchronizing a flow between a bearer control layer and a bearer layer device.
  • the main technical solution is as follows:
  • the bearer layer device ER returns according to the flow synchronization information sent by the resource management server RM on the bearer control layer.
  • Corresponding flow records are recorded to the resource management server RM;
  • the resource management server RM compares the flow records returned by the bearer layer device ER with the stream records saved by itself, and streams the information that needs to be synchronized in the bearer layer device ER according to the comparison result. Synchronous processing.
  • the purpose of the first embodiment provided by the present invention is to: synchronize all flow entries on the ER, that is, synchronize All the flow records on the ER, the main technical solution is: RM sends a stream synchronization request, the stream synchronization request does not carry any flow flag; ER receives such a stream synchronization request, sends all flow records to the RM, is sent After the last stream is recorded, a stream synchronization end message is sent to the RM.
  • the RM analyzes whether the flow entry sent by the ER is consistent with the flow entry saved by the RM. When the flow entry is determined to be inconsistent, the excess flow entry of the ER is deleted, and the flow entry missing from the ER is added.
  • the specific implementation process is shown in Figure 2.
  • step 101 the resource management server RM sends the synchronization information to the bearer layer device ER through the flow synchronization request message.
  • Step 102 The bearer layer device ER returns a corresponding flow record according to the flow synchronization request information, and returns an end message to the resource management server RM.
  • Step 103 The resource management server RM receives the flow record returned by the bearer layer device ER, and searches for the flow record returned by the bearer layer device ER in the corresponding flow record saved by itself. If not, the process proceeds to step 104. Notifying the ER to delete the stream record therein; otherwise, performing step 105;
  • step 105 the flow record returned by the bearer layer device ER is compared with the corresponding flow record saved by the host device. If not, the process proceeds to step 106, that is, the corresponding flow record is sent to the bearer layer device ER, and the bearer layer device ER is notified. Delete or update the corresponding stream record, and then perform step 108; otherwise, execute step 107, that is, no processing.
  • Step 108 The notification received by the bearer layer device ER root 3 ⁇ 4 performs deletion or update processing of the corresponding flow record, and returns a corresponding processing message to the resource management server RM according to the processing result.
  • step 108 the bearer layer device ER deletes the corresponding flow record indicated in the notification according to the received deletion notification, and if the deletion is successful, returns a successfully deleted message to the resource management server RM; if the deletion fails , returns the unsuccessfully deleted message to the resource management server RM.
  • the bearer layer device ER updates its own flow record with the received flow record according to the received update notification, and if the update is successful, returns a message of successful update to the resource management server RM; if the update fails, Return the unsuccessfully updated message to the resource management service Abdominal.
  • Step 109 The resource management server RM receives the processing message returned by the bearer layer device ER.
  • step 110 is executed, that is, the synchronization process is ended; otherwise, Step 111 is executed to continue to issue a new synchronization request to the bearer layer device ER.
  • the second embodiment of the present invention is different from the first embodiment in that the flow synchronization request information sent to the bearer layer device ER in the resource management server RM is specified to synchronize the flow entry with a certain flag.
  • the bearer layer device ER only selects the corresponding stream record carrying the same flag information to the resource management server RM for comparison. If the ER stores the stream record of the flag, the RM returns the response information and the stream synchronization end message of the stream in turn. The current stream synchronization is completed; if the ER does not have the stream record of the flag, the stream synchronization end message is returned to the RM, and the current stream synchronization is completed.
  • the RM may determine, process, delete, or retain the flow record entry that does not exist according to the synchronization result.
  • Step 201 The resource management server RM sends the flow synchronization information to the bearer layer device ER by using the flow synchronization request message, where the flow synchronization request information carries the identifier information of the flow that needs to be synchronized.
  • Step 202 The ER Checking whether there is a flow record carrying the flag information, if not, executing step 203, that is, returning an end message to the resource management server RM; otherwise, performing step 204, selecting a flow record carrying the flag information, and Return it to the resource management server.
  • the process from step 103 to step 111 in the first embodiment is next performed and will not be described in detail.
  • the implementation of the first embodiment and the second embodiment described above may be based on: the communication between the RM and the ER is based on the Common Open Policy Service (COPS) protocol, using the COPS protocol. Synchronize the process to achieve stream synchronization between RM and ER.
  • COPS Common Open Policy Service
  • the third embodiment and the fourth embodiment provided by the present invention implement the flow synchronization mechanism by using the policy delivery and result response process of the COPS.
  • the RM carries the start flow synchronization message in the policy sending message
  • the ER carries the flow synchronization result in the delivery result response message.
  • the third embodiment provided by the present invention includes the following process:
  • Step 301 The resource management server sends a policy to the bearer layer device ER, and the packet carries the stream synchronization information that needs to be performed.
  • Step 302 The bearer layer device ER returns a corresponding flow record to the resource management server RM according to the flow synchronization information.
  • the processes from step 103 to step 111 in the first embodiment are next performed and will not be described in detail.
  • the fourth embodiment provided by the present invention includes:
  • Step 401 The resource management server sends a policy to the bearer layer device ER, where the packet carries the stream synchronization information that needs to be performed, and carries the flag information of the stream that needs to be synchronized in the information.
  • Step 402 The bearer layer device ER checks whether there is a flow record carrying the flag information, and if not, returns an end message to the resource management server RM; otherwise, selecting a flow record carrying the flag information, and It is returned to the resource management server RM.
  • the system for synchronizing the flow between the bearer control layer and the bearer layer device includes: a bearer layer device ER and a resource management server RM, a request module and a judging module are set in the RM, and a response module and a synchronization process are set in the ER. Module.
  • the request module is mainly used to send stream synchronization information to the ER.
  • the requesting module may send the stream synchronization information to the ER by using a flow synchronization request message, a policy delivery message, or the like.
  • the stream synchronization information here indicates that stream synchronization is required.
  • the stream synchronization information may carry the flag information of the stream to be synchronized, or may not carry the flag information of the stream to be synchronized. 'Specific as described in the above method.
  • the response module is mainly used to return corresponding information to the RM according to the flow synchronization information sent by the requesting module.
  • the response module may return all the flow information, that is, the flow record, to the RM according to the flow synchronization information, or return the flow information having the flag information to the RM according to the flag information of the flow that needs to be synchronized carried in the flow synchronization information.
  • RM The response module returns an end message to the RM when it detects that the flow information of the stream synchronization information does not exist in the flow synchronization information and needs to be synchronized. Interest.
  • the response module can also return the end information to the RM while returning the stream information, so that the RM can clearly know that the stream information is returned. Specifically, it is described in the above method.
  • the judging module is mainly configured to receive the information returned by the response module, and determine whether there is information that needs to be synchronized in the information returned by the response module. If there is information that needs to be synchronized, the information that needs to be synchronized in the information is returned, that is, the flow record and the RM are saved. Corresponding stream information information is compared, and the ER is notified to perform stream synchronization processing according to the comparison result. If the result of the comparison is that the stream record in the return information does not exist in the stream information saved by the RM, the judging module notifies the ER to record the corresponding stream.
  • the judging module compares the stream record in the return information with the corresponding stream record saved in the RM, and if not, the issue is performed.
  • the corresponding stream is recorded to the bearer layer device ER, and the bearer layer device ER is notified to update the corresponding stream record; if they are consistent, the judging module does not process. Specifically, it is described in the above method.
  • the synchronization processing module is mainly configured to perform synchronization processing on the information that needs to be synchronized in the ER according to the notification of the determination module, and return corresponding processing information to the RM according to the processing result.
  • the synchronization processing here is to delete or update the stream recording processing, etc., for example, after receiving the deletion notification, the synchronization processing module deletes the corresponding stream record indicated in the notification. If the deletion is successful, the synchronization processing module returns the successfully deleted to the RM.
  • the synchronization processing module If the deletion fails, the synchronization processing module returns a message that is not successfully deleted to the RM; and if the synchronization processing module receives the deletion notification, updates the flow record of the ER storage with the received flow record, and if the update is successful, the synchronization processing module A message of successful update is returned to the RM; if the update fails, the synchronization processing module returns a message that the update was not successfully updated. Specifically, it is as described in the above method.
  • the requesting module After receiving the message that the ER returns the unsuccessful update or the deletion fails, the requesting module continues to send new stream synchronization information to the ER, and performs the flow synchronization process again. Specifically, it is described in the above method.
  • the bearer layer device ER of the present invention returns corresponding information to the resource management server RM according to the flow synchronization information sent by the resource management server RM on the bearer control layer;
  • the management server RM confirms that the information returned by the bearer layer device ER has information that needs to be synchronized, it compares with the corresponding information saved by itself, and According to the comparison result, the information that needs to be synchronized in the bearer layer device ER is stream synchronized.
  • the present invention can not only ensure the inter-flow recording of the RM and the ER without interrupting the service. Consistency, and the present invention is not time-limited in performing stream synchronization operations. In addition, the present invention does not require additional interfaces on the RM and ER, and the stream synchronization operation is simple and easy to expand.
  • the above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

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Description

对承载控制层与承载层设备间的流进行同步的方法、 系统和设备 技术领域
本发明涉及通信领域,尤其涉及一种对承载控制层与承载层设备间的流 进行同步的方法、 系统、 资源管理服务器和承载层设备。 发明背景
在 IP电信网 (IP telecom network, IPTN) 的技术中, 通过对 IP网络资源 的有效管理和合理使用,能够使 IP网络承载满足电信运营需求的业务。例如, 承载控制层的资源管理服务器 (Resource Manager, RM) 下发服务质量 (Quality of Service, QoS) 控制命令给承载层的边缘路由器 (Edge router, ER) , 以完成流分类, 及标签栈压入等工作。
现有的 IPTN技术典型应用模型如图 1所示, 用户呼叫后, 呼叫代理下发 给 RM需要的 QoS资源请求, RM选择一条链路后下发流安装消息给 ER, ER 的流安装成功后,用户的呼叫成功。用户挂断后,呼叫代理通知 RM释放 QoS 资源, RM通知 ER删除相应的信息。
RM下发的 QoS控制命令可以简称为流。 RM根据业务控制的需求向 ER 下发流或者删除 ER上的流, ER通过处理 RM的命令添加或删除本设备上的 流记录。这样 RM和 ER之间的流记录容易出现偏差, 为了保障业务的正常运 行, RM和 ER的流记录必须保持一致, 而且应该以 RM中的流记录为准。 但 由于 RM和 ER之间通信异常等原因,经常会引起某一方的流失效后无法释放 资源, 导致双方流表项不一致, 形成资源挂死。 这种资源挂死如果得不到 及时修正, 则在 RM上可以表现为下发的流得不到 ER的正确响应, 在 ER上 表现为失效的流资源无法释放等。 双方流表项不一致累计的结果会影响 IP 承载业务的正常使用。
为了保证双方流记录的一致性, 与本发明相关的现有技术一为: 检查 RM和 ER之间流表项是否一致,然后 RM在适当时间删除 ER上的所有流并重 新下发流记录给 ER, 以保证双方流记录的一致性。 上述检查可以周期性发 起, 也可以由 RM主动发起。
现有技术一存在如下缺陷:
RM在适当时间删除 ER上的所有流时, 该流承载的业务也被中断, 为避 免业务的中断, 该方法中的删除操作只能选择业务比较少的时段执行。
与本发明有关的现有技术二的技术方案为: 通过第三方查询 ER的流表 项, 再通知 RM删除不需要的流, 以保证双方流记录的一致性。
现有技术二存在如下缺陷:
需要在 RM和 ER上增加额外接口, 使保持流一致性的操作过于复杂。该 技术方案同样不适于在大规模应用业务时使用, 而且还存在容易出现错误, 效率偏低等缺点。 发明内容
本发明的目的是提供一种对承载控制层与承载层设备间的流进行同步 的方法和系统, 通过本发明提供的技术方案, 不仅能够在不中断业务的情 况下保证 RM和 ER间流记录的一致性,而且同步操作不受时间限制,另外本 发明不需要在 RM和 ER上增加额外的接口, 保持流记录一致性的操作简单, 易于扩展。
本发明的目的是通过以下技术方案实现的:
本发明提供一种对承载控制层与承载层设备间的流进行同步的方法,包 括- 承载层设备 ER根据承载控制层上的资源管理服务器 RM下发的流同步 信息返回相应的流记录给所述资源管理服务器 RM;
所述资源管理服务器 RM将承载层设备 ER返回的流记录与自己保存的 流记录进行比较, 并根据比较结果对承载层设备 ER中需要同步的信息进行 流同步处理。
下述方法的技术方案为可选技术方案。
所述 ER向 RM返回流信息的过程包括:
资源管理服务器 RM通过流同步请求消息下发流同步信息给承载层设 备 ER;
所述承载层设备 ER根据所述流同步信息返回相应的流记录给所述资源 管理服务器 RM。
所述 ER向 RM返回流信息的过程包括:
资源管理服务器 RM通过流同步请求消息下发流同步信息给承载层设 备 ER, 所述流同步信息中携带需要同步的流的标志信息;
所述 ER检査是否存在携带所述标志信息的流, 若不存在, 则返回结束 消息给所述资源管理服务器 RM; 否则, 选择携带所述标志信息的流记录, 并将其返回给所述资源管理服务器 RM。
所述 ER向 RM返回流信息的过程包括:
资源管理服务器 RM发送策略下发报文给承载层设备 ER,所述报文中携 带需要进行流同步的信息;
所述承载层设备 ER根据所述流同步的信息返回相应的流记录给所述资 源管理服务器 RM。 '
所述 ER向 RM返回流信息的过程包括:
资源管理服务器 RM发送策略下发报文给承载层设备 ER,所述报文中携 带需要进行流同步的信息, 并在所述信息中携带需要同步的流的标志信息; 所述承载层设备 ER检查是否存在携带所述标志信息的流, 若不存在, 则返回结束消息给所述资源管理服务器 RM; 否则, 选择携带所述标志信息 的流记录, 并将其返回给所述资源管理服务器 RM。
所述 ER向 RM返回流信息的过程还包括:
承载层设备 ER在向资源管理服务器 RM返回流记录后,向资源管理服务 器 RM返回结束消息;
资源管理服务器 RM根据接收到的结束消息确认承载层设备 ER返回流 记录的过程结束。
所述资源管理服务器 RM进行同步处理的过程包括:
所述资源管理服务器 RM接收承载层设备 ER返回的流记录,并査找自己 保存的流记录中是否存在承载层设备 ER返回的流记录, 若不存在, 则通知 ER将相应的流记录删除; 否则, 将承载层设备 ER返回的流记录与自己保存 的对应的流记录进行比较, 若不一致, 则下发相应的流记录给承载层设备 ER, 并通知承载层设备 ER用其更新对应的流记录; 否则, 不作处理。
所述方法还包括: 所述承载层设备 ER根据接收到的通知进行相应的删 除或更新处理, 并将处理结果信息返回给资源管理服务器 RM。
所述方法还包括:所述资源管理服务器 RM接收承载层设备 ER返回的处 理结果信息, 当根据所述处理结果信息判断承载层设备 ER已经成功同步相 应的流记录后, 则结束同步处理过程; 否则继续下发新的流同步信息给承 载层设备 ER。
本发明还提供一种对承载控制层与承载层设备间的流进行同步的系统, 包括: 承载层设备 ER和资源管理服务器 RM, 所述 RM中设置有请求模块和 判断模块, ER中设置有响应模块和同步处理模块;
请求模块: 用于向 ER下发流同步信息;
响应模块: 根据请求模块下发的流同步信息向 RM返回相应流记录; 判断模块: 用于将响应模块返回的流记录与 RM保存的流记录进行比 较, 并根据比较结果通知 ER进行流同步处理;
同步处理模块: 用于根据判断模块的通知对 ER中需要同步的信息进行 流同步处理。
下述系统的技术方案为可选技术方案。
当所述请求模块下发的流同步信息中包括有需要同步的流的标志信息 时, 响应模块根据其接收的流的标志信息向 RM返回相应的流记录; 当所述 请求模块下发的流同步信息中不包括需要同步的流的标志信息时, 响应模 块向 RM返回其保存的所有的流记录。
响应模块在向 RM返回流记录后, 向资源管理服务器 RM返回结束消 息,响应模块确定 ER保存的流记录中不存在请求模块传输来的流的标志信 息时, 向资源管理服务器 RM返回结束消息。
判断模块确定 RM保存的流记录中不存在响应模块返回的流记录时, 通知同步处理模块将相应的流记录删除; 判断模块确定在确定 RM保存的 流记录中存在响应模块返回的流记录时,判断模块再将返回的流记录与 RM 保存的对应的流记录进行比较, 如果不一致, 则下发相应的流记录给同步 处理模块, 并通知同步处理模块用其更新对应的流记录; 如果一致, 则判 断模块不作处理。
同步处理模块在同步处理结束后, 向 RM返回处理结果信息, 请求模 块接收承载层设备 ER返回的处理结果信息,当根据所述处理结果信息判断 承载层设备 ER已经成功同步相应的流记录后, 则结束同步处理过程; 否则 继续下发新的流同步信息。
本发明还提供一种资源管理服务器, 所述资源管理服务器 RM中设置有 请求模块和判断模块;
请求模块: 用于向 ER下发流同步信息;
判断模块: 用于将 ER返回的流记录与 RM保存的流记录进行比较, 并根 据比较结果通知 ER进行流同步处理。
本发明还提供一种承载层设备, 所述承载层设备 ER中设置有响应模块 和同步处理模块;
响应模块: 根据资源管理服务器 RM下发的流同步信息向 RM返回相应 流记录;
同步处理模块:用于根据资源管理服务器 RM的通知对 ER中需要同步的 信息进行流同步处理。
由上述本发明提供的技术方案可以看出, 本发明承载层设备 ER根据承 载控制层上的资源管理服务器 RM下发的流同步信息返回相应的信息给所 述资源管理服务器 RM; 当所述资源管理服务器 RM确认承载层设备 ER返回 的信息中有需要进行流同步的信息时, 则与自己保存的相应流记录进行比 较, 并根据比较结果对承载层设备 ER中需要同步的信息进行流同步处理。 通过本发明,不需要 RM在适当时间删除 ER上的所有流,从而保证了所有流 承载的业务不被中断,本发明不仅能够在不中断业务的情况下保证 RM和 ER 间流记录的一致性, 而且本发明在进行流同步操作时不受时间限制, 另外 本发明不需要在 RM和 ER上增加额外的接口, 流同步操作简单, 易于扩展。 附图简要说明
图 1为现有技术中 IP电信网的应用模型示意图;
图 2为本发明实施例的对承载控制层与承载层设备间的流进行同步的方 法流程图。 实施本发明的方式
本发明提供一种对承载控制层与承载层设备间的流进行同步的方法和 系统, 其主要技术方案为: 承载层设备 ER根据承载控制层上的资源管理服 务器 RM下发的流同步信息返回相应的流记录给所述资源管理服务器 RM; 资源管理服务器 RM将承载层设备 ER返回的流记录与自己保存的流记录进 行比较, 并根据比较结果对承载层设备 ER中需要同步的信息进行流同步处 理。
下面结合附图对本发明提供的对承载控制层与承载层设备间的流进行 同步的方法进行说明。
本发明提供的第一实施例的目的是: 同步 ER上所有的流表项, 即同步 ER上所有的流记录, 其主要技术方案是: RM下发流同步请求, 流同步请求 中不带任何流的标志; ER收到这样的流同步请求后,向 RM发送所有流记录, 在发送最后一个流记录后, 向 RM发送流同步结束消息。 RM分析 ER发送来 的流表项是否与 RM所保存的流表项一致, 并在确定流表项不一致时, 删除 ER上多余的流表项, 添加 ER上缺少的流表项。 具体实施过程如图 2所示。
图 2中, 在步骤 101、 资源管理服务器 RM通过流同步请求消息下发流同 步信息给承载层设备 ER。
步骤 102、所述承载层设备 ER根据所述流同步请求信息返回相应的流记 录, 同时返回结束消息给所述资源管理服务器 RM。
步骤 103、 所述资源管理服务器 RM接收承载层设备 ER返回的流记录, 并查找自己保存的对应的流记录中是否存在承载层设备 ER返回的流记录, 若不存在, 则执行步骤 104, 即通知 ER将其内的所述流记录删除; 否则, 执 行步骤 105;
步骤 105、将承载层设备 ER返回的流记录与自己保存的对应的流记录进 行比较,若不一致,则执行步骤 106,即下发相应的流记录给承载层设备 ER, 并通知承载层设备 ER删除或更新对应的流记录, 然后执行步骤 108; 否则, 执行步骤 107, 即不作处理。
步骤 108、所述承载层设备 ER根 ¾接收到的通知进行相应流记录的删除 或更新处理, 并根据处理结果返回相应的处理消息给资源管理服务器 RM。
在步骤 108中, 所述承载层设备 ER根据接收到的删除通知, 对通知中指 示的相应的流记录进行删除处理, 如果删除成功, 则返回成功删除的消息 给资源管理服务器 RM; 如果删除失败, 则返回未成功删除的消息给资源管 理服务器 RM。
在步骤 108中, 所述承载层设备 ER根据接收到的更新通知, 用接收到的 流记录更新自己的流记录, 如果更新成功, 则返回成功更新的消息给资源 管理服务器 RM; 如果更新失败, 则返回未成功更新的消息给资源管理服务 器腹。
步骤 109、所述资源管理服务器 RM接收承载层设备 ER返回的处理消息, 当根据所述消息判断承载层设备 ER已经成功同步相应的流记录时, 则执行 步骤 110, 即结束同步处理过程; 否则执行步骤 111, 即继续下发新的同步 请求给承载层设备 ER。
本发明提供的第二实施例,与第一实施例中不同之处在于,在资源管理 服务器 RM下发给承载层设备 ER的流同步请求信息中指定同步带有某标志 的流表项, 所述承载层设备 ER仅仅选择相应的携带同样标志信息的流记录 给资源管理服务器 RM进行比较, 如果 ER存有该标志的流记录, 则依次向 RM返回该流存在的回应信息和流同步结束消息,本次流同步完成;如果 ER 不存在有该标志的流记录,则向 RM返回流同步结束消息,本次流同步完成。 RM可以依据同步结果确定对不存在的流记录表项的处理, 删除或者保留。
本实施例比第一实施例具有更高的同步效率。 具体实现过程包括: 步骤 201、 资源管理服务器 RM通过流同步请求消息下发流同步信息给 承载层设备 ER, 所述流同步请求信息中携带需要同步的流的标志信息; 步骤 202、所述 ER检查是否存在携带所述标志信息的流记录,若不存在, 则执行步骤 203, 即返回结束消息给所述资源管理服务器 RM; 否则执行步 骤 204, 即选择携带所述标志信息的流记录, 并将其返回给所述资源管理服 务器壓。
接下来执行第一实施例中的步骤 103至步骤 111的过程, 不再详细描述。 前面所描述的第一实施例与第二实施例的实现基础可以为:在 RM和 ER 之间的通信使用公共开放策略服务 (Common Open Policy Service, COPS) 协议的基础上, 使用 COPS协议中的同步流程来实现 RM和 ER之间的流同步 操作。 而本发明提供的第三实施例和第四实施例是采用 COPS的策略下发和 结果回应流程来实现流同步机制。 RM在策略下发报文中携带开始流同步消 息, ER在下发结果回应报文中携带流同步结果。 本发明提供的第三实施例, 包括如下过程:
步骤 301、 资源管理服务器 RM发送策略下发报文给承载层设备 ER, 所 述报文中携带需要进行的流同步信息。
步骤 302、所述承载层设备 ER根据所述流同步信息返回相应的流记录给 所述资源管理服务器 RM。
接下来执行第一实施例中的步骤 103至步骤 111的过程, 不再详细描述。 本发明提供的第四实施例, 包括:
步骤 401、 资源管理服务器 RM发送策略下发报文给承载层设备 ER, 所 述报文中携带需要进行的流同步信息, 并在所述信息中携带需要同步的流 的标志信息;
步骤 402、 所述承载层设备 ER检查是否存在携带所述标志信息的流记 录, 若不存在, 则返回结束消息给所述资源管理服务器 RM; 否则, 选择携 带所述标志信息的流记录, 并将其返回给所述资源管理服务器 RM。
接下来执行第一实施例中的步骤 103至步骤 111的过程, 不再详细描述。 本发明提供的对承载控制层与承载层设备间的流进行同步的系统包括: 承载层设备 ER和资源管理服务器 RM, RM中设置有请求模块和判断模块, ER中设置有响应模块和同步处理模块。
请求模块主要用于向 ER下发流同步信息。 请求模块可以通过流同步请 求消息、 策略下发报文等来向 ER下发流同步信息。 这里的流同步信息表示 需要进行流同步。 流同步信息中可以携带需要同步的流的标志信息, 也可 以不携带需要同步的流的标志信息。 '具体如上述方法中的描述。
响应模块主要用于根据请求模块下发的流同步信息向 RM返回相应信 息。 响应模块可以根据流同步信息将所有的流信息即流记录都返回给 RM, 也可以根据流同步信息中携带的需要同步的流的标志信息, 将具有该标志 信息的流信息即流记录返回给 RM。响应模块在检查出其存储的流信息中不 存在流同步信息中携带的需要同步的流的标志信息时, 向 RM返回结束信 息。响应模块还可以在返回流信息的同时, 向 RM返回结束信息, 以便让 RM 能够明确的获知流信息返回结束。 具体如上述方法中的描述。
判断模块主要用于接收响应模块返回的信息,并判断响应模块返回的信 息中是否有需要同步的信息, 如果有需要同步的信息, 则将返回信息中需 要同步的信息即流记录与 RM保存的相应的流信息信息进行比较, 并根据比 较结果通知 ER进行流同步处理,如比较的结果为 RM保存的流信息中不存在 返回信息中的流记录时, 判断模块则通知 ER将相应的流记录删除; 再如比 较的结果为 RM保存的流信息中包含返回信息中的流记录时, 判断模块再将 返回信息中的流记录与 RM保存的对应的流记录进行比较, 如果不一致, 则 下发相应的流记录给承载层设备 ER, 并通知承载层设备 ER用其更新对应的 流记录; 如果一致, 则判断模块不作处理。 具体如上述方法中的描述。
同步处理模块主要用于根据判断模块的通知对 ER中需要同步的信息进 行同步处理, 并根据处理结果向 RM返回相应的处理信息。 这里的同步处理 为删除或更新流记录处理等, 如同步处理模块在接收到删除通知后, 对通 知中指示的相应的流记录进行删除处理, 如果删除成功, 同步处理模块向 RM返回成功删除的消息; 如果删除失败, 同步处理模块向 RM返回未成功 删除的消息; 再如同步处理模块在接收到删除通知后, 用接收到的流记录 更新 ER存储的流记录,如果更新成功, 同步处理模块向 RM返回成功更新的 消息; 如果更新失败, 同步处理模块向 RM返回未成功更新的消息。 具体如 上述方法中的描述。
请求模块在 RM接收到 ER返回未成功更新、删除失败等消息后, 继续向 ER下发新的流同步信息,再次进行流同步过程。具体如上述方法中的描述。
由上述本发明提供的技术方案可以看出, 本发明承载层设备 ER根据承 载控制层上的资源管理服务器 RM下发的流同步信息返回相应的信息给所 述资源管理服务器 RM; 当所述资源管理服务器 RM确认承载层设备 ER返回 的信息中有需要流同步的信息时, 则与自己保存的相应信息进行比较, 并 根据比较结果对承载层设备 ER中需要同步的信息进行流同步处理。 通过本 发明,不需要 RM在适当时间删除 ER上的所有流,从而保证了所有流承载的 业务不被中断, 因此,本发明不仅能够在不中断业务的情况下保证 RM和 ER 间流记录的一致性, 而且本发明在进行流同步操作时不受时间限制, 另外 本发明不需要在 RM和 ER上增加额外的接口, 流同步操作简单, 易于扩展。 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, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 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。 因此, 本 发明的保护范围应该以权利要求的保护范围为准。
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Claims

权利要一求一
1、 一种对承载控制层与承载层设备间的流进行同步的方法, 其特征在 于, 包括:
承载层设备 ER根据承载控制层上的资源管理服务器 RM下发的流同步 信息返回相应的流记录给所述资源管理服务器 RM;
所述资源管理服务器 RM将承载层设备 ER返回的流记录与自己保存的 流记录进行比较, 并根据比较结果对承载层设备 ER中需要同步的信息进行 流同步处理。
2、 根据权利要求 1所述的方法, 其特征在于, 所述 ER向 RM返回流信息 的过程包括:
资源管理服务器 RM通过流同步请求消息下发流同步信息给承载层设 备 ER;
所述承载层设备 ER根据所述流同步信息返回相应的流记录给所述资源 管理服务器 RM。
3、 根据权利要求 1所述的方法, 其特征在于, 所述 ER向 RM返回流信息 的过程包括:
资源管理服务器 RM通过流同步请求消息下发流同步信息给承载层设 备 ER, 所述流同步信息中携带需要同步的流的标志信息;
所述 ER检查是否存在携带所述标志信息的流, 若不存在, 则返回结束 消息给所述资源管理服务器 RM; 否则, 选择携带所述标志信息的流记录, 并将其返回给所述资源管理服务器 RM。
4、 根据权利要求 1所述的方法, 其特征在于, 所述 ER向 RM返回流信息 的过程包括:
资源管理服务器 RM发送策略下发报文给承载层设备 ER,所述报文中携 带需要进行流同步的信息;
所述承载层设备 ER根据所述流同步的信息返回相应的流记录给所述资 源管理服务器 RM。
5、 根据权利要求 1所述的方法, 其特征在于, 所述 ER向 RM返回流信息 的过程包括:
资源管理服务器 RM发送策略下发报文给承载层设备 ER,所述报文中携 带需要进行流同步的信息, 并在所述信息中携带需要同步的流的标志信息; 所述承载层设备 ER检查是否存在携带所述标志信息的流, 若不存在, 则返回结束消息给所述资源管理服务器 RM; 否则, 选择携带所述标志信息 的流记录, 并将其返回给所述资源管理服务器 RM。
6、 根据权利要求 2或 3或 4或 5所述的方法, 其特征在于, 所述 ER向 RM 返回流信息的过程还包括:
承载层设备 ER在向资源管理服务器 RM返回流记录后,向资源管理服务 器 RM返回结束消息;
资源管理服务器 RM根据接收到的结束消息确认承载层设备 ER返回流 记录的过程结束。
7、 根据权利要求 1所述的方法, 其特征在于, 所述资源管理服务器 RM 进行同步处理的过程包括:
所述资源管理服务器 RM接收承载层设备 ER返回的流记录,并査找自己 保存的流记录中是否存在承载层设备 ER返回的流记录, 若不存在, 则通知 ER将相应的流记录删除; 否则, 将承载层设备 ER返回的流记录与自己保存 的对应的流记录进行比较, 若不一致, 则下发相应的流记录给承载层设备 ER, 并通知承载层设备 ER用其更新对应的流记录; 否则, 不作处理。
8、 根据权利要求 7所述的方法, 其特征在于, 所述方法还包括: 所述承载层设备 ER根据接收到的通知进行相应的删除或更新处理, 并 将处理结果信息返回给资源管理服务器 RM。
9、 根据权利要求 8所述的方法, 其特征在于, 所述方法还包括- 所述资源管理服务器 RM接收承载层设备 ER返回的处理结果信息,当根 据所述处理结果信息判断承载层设备 ER已经成功同步相应的流记录后, 则 结束同步处理过程; 否则继续下发新的流同步信息给承载层设备 ER。
10、一种对承载控制层与承载层设备间的流进行同步的系统,包括: 承 载层设备 ER和资源管理服务器 RM, 其特征在于, 所述 RM中设置有请求模 块和判断模块, ER中设置有响应模块和同步处理模块;
请求模块: 用于向 ER下发流同步信息;
响应模块: 根据请求模块下发的流同步信息向 RM返回相应流记录; 判断模块: 用于将响应模块返回的流记录与 RM保存的流记录进行比 较, 并根据比较结果通知 ER进行流同步处理;
同步处理模块: 用于根据判断模块的通知对 ER中需要同步的信息进行 流同步处理。
11、根据权利要求 10所述的系统, 其特征在于, 当所述请求模块下发的 流同步信息中包括有需要同步的流的标志信息时, 响应模块根据其接收的 流的标志信息向 RM返回相应的流记录; 当所述请求模块下发的流同步信息 中不包括需要同步的流的标志信息时, 响应模块向 RM返回其保存的所有的 流记录。 、
12、 根据权利要求 11所述的系统, 其特征在于, 响应模块在向 RM返 回流记录后, 向资源管理服务器 RM返回结束消息, 响应模块确定 ER保存 的流记录中不存在请求模块传输来的流的标志信息时, 向资源管理服务器 RM返回结束消息。
13、 根据权利要求 11所述的系统, 其特征在于, 判断模块确定 RM保 存的流记录中不存在响应模块返回的流记录时, 通知同步处理模块将相应 的流记录删除; 判断模块确定在确定 RM保存的流记录中存在响应模块返 回的流记录时, 判断模块再将返回的流记录与 RM保存的对应的流记录进 行比较, 如果不一致, 则下发相应的流记录给同步处理模块, 并通知同步 处理模块用其更新对应的流记录; 如果一致, 则判断模块不作处理。
14、 根据权利要求 13所述的系统, 其特征在于, 同步处理模块在同步 处理结束后, 向 RM返回处理结果信息,请求模块接收承载层设备 ER返回 的处理结果信息,当根据所述处理结果信息判断承载层设备 ER已经成功同 步相应的流记录后, 则结束同步处理过程; 否则继续下发新的流同步信息。
15、 一种资源管理服务器, 其特征在于, 所述资源管理服务器 RM中设 置有请求模块和判断模块;
请求模块: 用于向 ER下发流同步信息;
判断模块: 用于将 ER返回的流记录与 RM保存的流记录进行比较, 并根 据比较结果通知 ER进行流同步处理。
16、 一种承载层设备, 其特征在于, 所述承载层设备 ER中设置有响应 模块和同步处理模块;
响应模块: 根据资源管理服务器 RM下发的流同步信息向 RM返回相应 流记录;
同步处理模块:用于根据资源管理服务器 RM的通知对 ER中需要同步的 信息进行流同步处理。
PCT/CN2006/002541 2005-10-24 2006-09-27 Procede, systeme et appareil de synchronisation du flux entre la couche de commande support et les appareils de la couche support WO2007048310A1 (fr)

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