WO2012009896A1 - 一种实现呼叫优先接入的方法和系统 - Google Patents
一种实现呼叫优先接入的方法和系统 Download PDFInfo
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- WO2012009896A1 WO2012009896A1 PCT/CN2010/078028 CN2010078028W WO2012009896A1 WO 2012009896 A1 WO2012009896 A1 WO 2012009896A1 CN 2010078028 W CN2010078028 W CN 2010078028W WO 2012009896 A1 WO2012009896 A1 WO 2012009896A1
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- call
- priority
- priority access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/50—Connection management for emergency connections
Definitions
- the present invention relates to call access technologies in communication systems, and more particularly to a method and system for implementing call priority access. Background technique
- the call priority access service can ensure that some special users can use the resources of the communication network to make calls preferentially. Therefore, the application of this service is very important.
- the special users are: high-level users in the military network, or when an emergency occurs in the country. (such as natural disasters such as earthquakes and typhoons) Government staff and disaster relief workers responsible for coordinating the emergency.
- PDA Priority Access and Channel Assignment
- MLPP Multilevel Precedence and Preemption
- WPS Wireless Priority Service
- PES Public Switched Telephone Service
- circuit identification code CIC, Circuit Identification Code
- air interface resources wireless networks
- the core network mainly handles calls on the CIC resources, and as long as the CIC resources are occupied, the call can be connected.
- IP Internet Protocol
- the call may not use CIC resources at all; the call must be successfully connected, and must occupy the real-time transmission on the media gateway (MGW, Media Gateway).
- MGW Media Gateway
- RTP Real-time Transport Protocol
- TC transport encoder
- IWF Inter working Function
- the main purpose of the present invention is to provide a method and system for implementing call priority access, so that the MGW can implement the call priority access method in the manner of preferential access, and enrich and improve the call priority access service of the communication network. .
- the invention provides a method for implementing call priority access, the method comprising:
- the MSCee Mobile Switching Center emulation
- MSCee Mobile Switching Center emulation
- the MGW applies for the call related resources of the current call.
- the call priority access processing is performed according to the priority of the current call.
- the call priority access mode is pre-configured to be a strong occupation mode; when the call related resources requested by the MGW are busy, the call priority access processing is performed according to the priority of the current call, For example: forcibly releasing a corresponding call related resource whose call priority is lower than the priority of the current call, and notifying the MSCe of the call branch where the call related resource is located to release the call branch; the MGW releases the call for the current call.
- the call related resources of the branch are recorded, and the priority of the call related resource is recorded as the priority of the call; after that, the MSCe is notified to create the terminal successfully.
- the call priority access mode is pre-configured in the queue mode; when the call related resources requested by the MGW are busy, the call priority access processing is performed according to the priority of the current call, as follows: The priority of the call and the start time of the call are added to the corresponding call-related resource queue for queuing, and the protection timer is started; when the MGW detects that there is an idle call-related resource, the call-related resource is prioritized to the queue. The call is used in the call queue of the related resource queue, and the corresponding MSCe is notified to create the terminal successfully.
- the priority information of the current call is: carrying a call priority access (PriorityAccess) packet in the message for informing the MGW to create the terminal, where the call priority access packet includes a PriorityAccessLevel attribute, and is used to set The priority of this call.
- a call priority access PriorityAccess
- the call priority access packet further includes a priority method, where the call priority access mode includes a strong occupation mode and a queue mode;
- the MGW performs call priority access processing according to the call priority access mode specified by the PriorityMethod attribute in the call priority access packet.
- the call priority access packet further includes a priority access result (PARes) event, and is used by the MGW to be busy in the requested call related resource, and to join the call into the corresponding call related resource queue in a queue manner.
- PARes priority access result
- the call priority access packet received by the MGW includes a PARes event, and the MGW adds the current call to the corresponding call related resource according to the priority of the current call in the call priority access packet and the current call start time.
- the message is notified by Notify In the PARes event, the MSCe is notified of the resource queuing.
- the MSCe After receiving the Notify message, the MSCe records the termination identifier ( Terminationld) carried in the Notify message, and restarts the timer to notify the related network element.
- the system provides a system for implementing call priority access, and the system includes: MSCe, MGW;
- the MSCe is configured to carry the priority of the current call in the message for informing the MGW to create the terminal; the MGW is configured to receive the message of the created terminal notified by the MSCe, and obtain the priority of the current call in the message; Related resources, when the requested call related resources are busy, the call priority access processing is performed according to the priority of the current call.
- the MGW includes: a message receiving module and a call priority access module;
- a message receiving module configured to receive a message for creating a terminal notified by the MSCe, obtain a priority of the current call in the message, and send the priority of the current call to the call priority access module;
- the call priority access module is configured to apply for call related resources of the current call. When the applied call related resources are busy, the call priority access processing is performed according to the priority of the current call.
- the MSCe is specifically configured to carry a call priority access packet in a message for informing the MGW to create a terminal, where the call priority access packet includes a PriorityAccessLevel attribute, and is used to set a priority of the current call.
- the call priority access module is further configured to perform call priority access processing according to the call priority access mode specified by the PriorityMethod attribute when the call priority access packet includes the PriorityMethod attribute.
- the call priority access module when the PARes event is included in the call priority access packet, the call priority access module is further configured to start the current call according to the priority of the call in the call priority access packet and the current call. After the time is added to the corresponding call-related resource queue for queuing, The Notify message informs the MSCe that resource queuing occurs in the PARes event;
- the MSCe is further configured to: after receiving the Notify message, record the Terminationld carried in the Notify message, and perform a restart timer to notify the operation of the related network element.
- the present invention provides a method and system for implementing call priority access.
- the MSCe notifies the MGW to create a terminal to carry the priority of the current call; the MGW obtains the priority of the current call; and the MGW applies for the call.
- Calling related resources when the call related resources requested by the MGW are busy, the call priority access processing is performed according to the priority of the current call; thus, the MGW can implement the priority access mode when applying for calling related resources, enriching and The call priority access service of the communication network is improved, and the application prospect is wide.
- FIG. 1 is a schematic flowchart of a method for implementing call priority access according to the present invention
- FIG. 2 is a schematic structural diagram of a system for implementing call priority access according to the present invention.
- FIG. 3 is a schematic flowchart of a method for implementing call priority access according to the present invention by taking RTP resources as an example. detailed description
- MSCe carries the priority information of the current call in the message informing the MGW to create the terminal; the MGW acquires the priority of the current call; the MGW applies for the call related resource of the current call, when the MGW applies for When the call related resources are busy, the call priority access processing is performed according to the priority of the current call.
- the method for implementing call priority access in the present invention includes the following steps:
- Step 101 The MSCe carries the priority of the current call in the message that informs the MGW to create the terminal.
- the priority of carrying the current call may be that the call priority access packet is carried in the message for informing the MGW to create the terminal, and the call priority access packet includes a PriorityAccessLevel attribute, which is used to set the priority of the current call.
- the call priority access packet may further include a PriorityMethod attribute, which is used to specify a call priority access mode, where the call priority access mode includes a forced access mode (ForcedWay) and a queue mode (Queue Way);
- the call priority access packet may further include a PARes event, when the MGW detects that the requested call related resource is busy, and uses the queue mode to join the call to the corresponding call related resource queue for queuing, report The result of this priority access call;
- PropertylD PriorityAccessLevel(0x0001 );
- EventID PARes ( 0x0001 );
- Parameterld result (0x0001); Description: The result of the priority call for 4 call notifications;
- the obtaining of the priority of the current call may be obtained according to the method of obtaining the priority in the existing call priority access protocol.
- the priority of the call is obtained through the subscription attribute of the user;
- the message that informs the MGW to create a terminal is generally an Add message
- the call related resources include RTP resources, TC resources, IWF resources, resources used by T.38 fax, and the like.
- Step 102 The MGW receives the message of the created terminal notified by the MSCe, and obtains the priority of the current call therein.
- Step 103 The MGW applies for the call related resource of the current call, when the call related resource requested by the MGW is busy, step 104 is performed; when the MGW applies for the call related resource of the current call, step 105 is performed;
- Step 104 The MGW performs call priority access processing according to the priority of the current call, and the process ends.
- the pre-configured call-first access mode is the strong-occupied mode
- the corresponding call-related resources with a lower priority than the current call are forcibly released, and the call is notified.
- the MSCe of the calling branch where the related resource is located releases the call branch, and the MSCe releases the call branch after receiving the notification; the MGW uses the call related resource that releases the call branch for the current call, and records the priority of the call related resource.
- Level is the priority of the call; then, notify the MSCe to create the terminal successfully by reply message (Reply); Further, if the MGW does not find the call related resource with a lower priority than the current call, the MSCe is notified by the Reply message to create the terminal.
- the call related resources of the MGW are busy, and the current call is added to the corresponding call related resource queue according to the priority of the current call and the current call start time.
- the queue is queued, and the protection timer Timer_Queue Way is started to prevent the MGW from waiting in the queue.
- the call related resource is prioritized to the call related resource queue. A call of the first part is used, and the MSCe corresponding to the call using the call related resource is notified by the Reply message to create the terminal successfully;
- the MGW notifies the MSCe of the corresponding call to create a terminal by using a Reply message
- the MGW receives the call priority access packet, and the call priority access packet includes a PARes event, and the MGW starts the current call according to the priority of the call in the call priority access packet and the current call.
- the step further includes: the MGW receives the call priority access packet, and performs the call priority access processing according to the call priority access mode specified by the PriorityMethod attribute in the call priority access packet, where the specified call priority access mode is the strong occupation mode.
- the method for performing the call priority access processing by the MGW is the same as the method for the preemptive call priority access mode in the preemptive manner; when the call priority access mode is the queue mode, the MGW performs the call priority access processing method and The method of the above-mentioned pre-configured call priority access mode is the same as the queue mode;
- the above-mentioned pre-configured call priority access mode is generally a call priority access mode pre-configured in the background of the MGW;
- the step further includes: when the MSCe sends a timer to notify the MGW to create the terminal to timeout or receives a release message of other related network elements, notify the MGW through a Subtract message. Release the corresponding call in the terminal and call priority queue.
- Step 105 The MGW records the priority of the call-related resource that is requested to be the priority of the call, and notifies the MSCe to create the terminal successfully by using the Reply message.
- the present invention further provides a system for implementing call priority access.
- the system includes: MSCe 21, MGW 22;
- the MSCe 21 is configured to carry the priority of the call in the message informing the MGW 22 to create the terminal;
- the MGW 22 is configured to receive a message for creating a terminal notified by the MSCe 21, and obtain a priority of the current call therein; apply for a call related resource of the current call, when the applied call related resource is busy, according to the priority of the current call Level for call priority access processing;
- the MSCe 21 carries the priority of the current call in the message for informing the MGW 22 to create the terminal.
- the MSCe 21 carries the call priority access packet in the message for informing the MGW 22 to create the terminal, where the call priority access packet includes The PriorityAccessLevel attribute is used to set the priority of the current call.
- the call priority access packet may include a PriorityMethod attribute, which is used to specify a call priority access mode, where the call priority access mode includes a strong occupation mode and a queue.
- the call priority access packet may further include a PARes event, where the MGW 22 detects that the requested call related resource is busy, and uses the queue manner to join the current call into the corresponding call related resource queue.
- the MGW 22 includes: a message receiving module 221 and a call priority access module 222.
- the message receiving module 221 is configured to receive a message for creating a terminal notified by the MSCe 21. And won Taking the priority of the current call, and sending the priority of the current call to the call priority access module 222;
- the call priority access module 222 is configured to apply for call related resources of the current call, and when the applied call related resource is busy, perform call priority access processing according to the priority of the current call; for example, pre-configured call priority access
- the call-related resource requested by the call priority access module 222 is busy, the call-related resource with a call priority lower than the priority of the current call is forcibly released, and the call-related resource is notified.
- the MSCe 21 of the calling branch releases the call branch; after the MSCe 21 releases the call branch, the call priority access module 222 uses the call related resources for releasing the call branch for the current call, and records the call related resource.
- the priority of the call is the priority of the call; then, the reply message is notified to the MSCe 21 to create the terminal successfully by using a Reply message;
- the MSCe 21 is notified by the Reply message to create the terminal.
- the pre-configured call priority access mode is the queue mode
- the current call is based on the current call priority and the current call start time.
- the call priority access module 222 detects that there is an idle corresponding call-related resource the call-related resource is prioritized to the row A call is used in the call-related resource queue header, and the MSCe 21 corresponding to the call using the call-related resource is notified by the Reply message to create the terminal successfully;
- the call priority access module 222 notifies the MSCe 21 of the corresponding call that the terminal fails to be created by using the Reply message;
- the call priority access module 222 adds the current call to the corresponding call related resource team according to the priority of the current call in the call priority access packet and the current call start time.
- the MSCe 21 is notified of the resource queuing in the PARes event through the Notify message, that is, the Notify message carries the call priority access packet, and the call is preferentially accessed.
- PARes PAQueueWay in the package, and carrying Terminationld;
- the MSCe 21 is further configured to: after receiving the Notify message, record the Terminationld, and perform a restart timer, notify other related network elements, and the like, where the restart timer is to restart the MSCe 21 to send a notification to the MGW 22 to create a terminal.
- the timer that is started when the message is started.
- the call priority access module 222 is further configured to: when the call priority access packet includes the PriorityMethod attribute, perform call priority access processing according to the call priority access mode specified by the PriorityMethod attribute;
- the MSCe 21 is further configured to notify the MGW 22 to release the terminal and the call priority queue by using a Subtract message when the timer started when the message for informing the creation of the terminal is timed out or the release message of other related network elements is received. Corresponding call;
- the message receiving module 221 is further configured to: after receiving the Subtract message, notify the call priority access module 222; the call priority access module 222 releases the corresponding call in the corresponding terminal and the call priority queue;
- the call priority access module 222 is further configured to: when applying for the call related resource of the current call, record the priority of the applied call related resource as the priority of the call, and notify the MSCe by using a Reply message. 21
- the terminal was created successfully.
- the method includes the following steps:
- Step 301 The MSCe carries a call priority access packet in an Add message, where the call priority access packet includes a priority of the current call.
- the call priority access packet may include a PriorityAccessLevel attribute, Setting the priority of the current call; further, the call priority access packet may include
- the PriorityMethod attribute is used to specify the call priority access mode, and the call priority access mode includes a strong occupation mode and a queue mode. Further, the call priority access packet may further include a PARes event, and the MGW detects the application. When the RTP resource is busy and queued to join the call to the corresponding RTP resource queue for queuing, report the result of the priority access call.
- the priority of the current call can be obtained according to the method of obtaining the priority in the existing call priority access protocol.
- the priority of the call is obtained through the subscription attribute of the user.
- Step 302 The MGW receives the added message, and obtains the call priority access packet therein.
- Step 304 The MGW performs call priority access processing according to the priority of the current call in the call priority access packet, and the process ends.
- the RTP resource requested by the MGW will be forced to release the corresponding RTP resource whose call priority is lower than the priority of the call in the call priority access packet.
- the call is used to release the RTP resource of the call branch, and the priority of the RTP resource is recorded as the priority of the current call in the call priority access packet; then, the reply message is notified to the MSCe to create the terminal successfully by using a Reply message;
- the MSCe is notified by the Reply message to create the terminal. For example, if the pre-configured call priority access mode is queued, when the RTP resource requested by the MGW is busy, the current call is added to the priority of the call in the call priority access packet and the current call start time. The RTP resource queue is queued, and the protection timer Timer_Queue Way is started to prevent the MGW from waiting in the queue. When the MGW detects that there is an idle RTP resource, the RTP resource is preferentially assigned to the RTP resource. A call is used in the queue header, and the MSCe corresponding to the call using the RTP resource is notified by the Reply message to create the terminal successfully.
- the MGW notifies the MSCe of the corresponding call to create a terminal by using a Reply message
- the MGW adds the current call according to the priority of the call in the call priority access packet and the current call start time to the corresponding RTP resource queue.
- the MSCe After receiving the Notify message, the MSCe records the Terminationld, and restarts the timer to notify other related network elements.
- the restart timer is a timer that is restarted when the MSCe sends a message notifying the MGW to create the terminal. .
- the step further includes: the MGW performs call priority access processing according to the call priority access mode specified by the PriorityMethod attribute in the call priority access packet;
- the pre-configured call priority access mode is generally configured in advance in the MGW background call priority access mode
- the step further includes: when the MSCe sends a timer to notify the MGW to create the terminal to timeout or receives a release message of other related network elements, notify the MGW through a Subtract message. Release the corresponding call in the terminal and call priority queue.
- Step 305 The MGW records the priority of the applied RTP resource as the priority of the current call in the call priority access packet, and notifies the MSCe to create the terminal successfully by using a reply message.
- the MGW can be implemented in the manner of preferential access when applying for calling related resources, enriching and perfecting the call priority access service of the communication network.
- the bearer and the control are separated. Thoughts have long been applied to Code Division Multiple Access 2000 (CDMA2000), Wideband Code Division Multiple Access (WCDMA), Time Division Synchronous Code Division Multiple Access (TD-SCDMA), Next Generation Network (NGN), IP Multimedia Subsystem (IMS), etc.
- CDMA2000 Code Division Multiple Access 2000
- WCDMA Wideband Code Division Multiple Access
- TD-SCDMA Time Division Synchronous Code Division Multiple Access
- NTN Next Generation Network
- IMS IP Multimedia Subsystem
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Abstract
本发明公开了一种实现呼叫优先接入的方法,移动交换仿真中心(MSCe)在通知媒体网关(MGW)创建终端的消息中携带本次呼叫的优先级信息;MGW获取所述本次呼叫的优先级;MGW申请本次呼叫的呼叫相关资源,当MGW所申请的呼叫相关资源忙时,根据本次呼叫的优先级进行呼叫优先接入处理;本发明同时还公开了一种实现呼叫优先接入的系统,通过本发明的方案,可以使MGW在申请呼叫相关资源时按照优先接入的方式实现,丰富和完善了通信网络的呼叫优先接入业务,应用前景广泛。
Description
一种实现呼叫优先接入的方法和系统 技术领域
本发明涉及通信系统中的呼叫接入技术, 尤其涉及一种实现呼叫优先 接入的方法和系统。 背景技术
呼叫优先接入业务可以保证一些特殊的用户可以优先使用通信网络的 资源打通电话, 因此这个业务的应用非常重要, 所述特殊的用户如: 军网 中的高级别用户, 或者当国家发生紧急情况(如地震、 台风等自然灾害) 时负责协调处理该紧急情况的政府工作人员、 救灾工作人员等。
目前已知的呼叫优先接入业务包括: 优先接入和信道指配 (PACA, Priority Access and Channel Assignment )、 多级优先和予贞占 ( MLPP , MultiLevel Precedence and Preemption )、 无线优先月良务 ( WPS , Wireless Priority Service )、 美国政府应急电信月良务 ( GETS , Government Emergency Telecommunication Service )等业务。
这些业务及其协议主要描述了呼叫接续所必须的电路识别码( CIC , Circuit Identification Code )资源、 空口资源(无线网络)等资源的优先接入 情况。
对于 CIC资源, 一般呼叫优先接入有两种实现方式:
1 )强占方式( ForcedWay ): 当优先接入呼叫占用 CIC资源的时候, 如 果没有空闲的 CIC资源, 则释放一个低优先级呼叫的 CIC, 同时把该 CIC 给当前呼叫使用。
2 )排队方式(QueueWay ): 当优先接入呼叫占用 CIC资源的时候, 如 果没有空闲的 CIC资源, 则把当前呼叫按照优先级加入排队队列, 一旦有
空闲的 CIC资源, 则优先给队首的一个呼叫使用;
在上述的那些呼叫优先接入业务中, 核心网主要^ ^于 CIC资源处理 呼叫, 只要占用了 CIC资源, 呼叫就可以接续了。 但是在核心网大量网络 之间互连的协议( IP , Internet Protocol )化的今天, 呼叫可能根本用不到 CIC资源; 呼叫要接续成功, 必须占用媒体网关 (MGW, Media Gateway ) 上的实时传送协议(RTP, Real-time Transport Protocol ), 传输编码器(TC, TransCoder ), 网络互通功能(IWF, Inter working Function ), T.38传真所用 的资源等呼叫相关资源。 没有上述这些资源, 呼叫就无法建立, 因此 MGW 申请这些资源的时候, 如果这些资源忙, 也需要按照上述两种方式实现呼 叫优先接入, 这样才能完整的实现呼叫优先接入业务。 但是当前 H.248协 议不支持将呼叫优先接入业务的信息传递给 MGW,因此当 MGW上需要申 请这些资源的时候, 就无法实现呼叫优先接入业务。 发明内容
有鉴于此, 本发明的主要目的在于提供一种实现呼叫优先接入的方法 和系统, 使 MGW在申请呼叫相关资源时按照优先接入的方式实现, 丰富 和完善通信网络的呼叫优先接入业务。
为达到上述目的, 本发明的技术方案是这样实现的:
本发明提供的一种实现呼叫优先接入的方法, 该方法包括:
移动交换仿真中心 (MSCee, Mobile Switching Center emulation )在通 知 MGW创建终端的消息中携带本次呼叫的优先级信息; MGW获取所述本 次呼叫的优先级;
MGW申请本次呼叫的呼叫相关资源,当 MGW所申请的呼叫相关资源 忙时, 根据本次呼叫的优先级进行呼叫优先接入处理。
上述方案中,预先配置呼叫优先接入方式为强占方式; MGW所申请的 呼叫相关资源忙时, 所述根据本次呼叫的优先级进行呼叫优先接入处理,
为: 强制释放一个呼叫优先级比本次呼叫的优先级低的相应呼叫相关资源, 并通知该呼叫相关资源所在的呼叫分支的 MSCe释放所述呼叫分支; MGW 对本次呼叫使用释放所述呼叫分支的呼叫相关资源, 并记录该呼叫相关资 源的优先级为本次呼叫的优先级; 之后, 通知 MSCe创建终端成功。
上述方案中,预先配置呼叫优先接入方式为队列方式; MGW所申请的 呼叫相关资源忙时, 所述根据本次呼叫的优先级进行呼叫优先接入处理, 为: 将本次呼叫按照本次呼叫的优先级和本次呼叫开始时间加入到相应呼 叫相关资源队列中进行排队, 并启动保护定时器; 当 MGW检测到有空闲 的呼叫相关资源时, 则将该呼叫相关资源优先给排在所述呼叫相关资源队 列首部的一个呼叫使用, 并通知对应的 MSCe创建终端成功。
上述方案中, 所述携带本次呼叫的优先级信息具体为: 在通知 MGW 创建终端的消息中携带呼叫优先接入(PriorityAccess )包, 所述呼叫优先接 入包包括 PriorityAccessLevel属性, 用于设定本次呼叫的优先级。
上述方案中, 所述呼叫优先接入包进一步包括 PriorityMethod属性, 用 于指定呼叫优先接入方式, 所述呼叫优先接入方式包括强占方式、 队列方 式;
所述 MGW按照呼叫优先接入包中 PriorityMethod属性所指定的呼叫优 先接入方式进行呼叫优先接入处理。
上述方案中,所述呼叫优先接入包还包括优先接入结果( PARes )事件, 用于 MGW在所申请的呼叫相关资源忙、 并且釆用队列方式将本次呼叫加 入相应呼叫相关资源队列中进行排队的时候, 报告本次优先接入呼叫的结 果;
所述 MGW收到的呼叫优先接入包中包括 PARes事件 , 则所述 MGW 在将本次呼叫按照呼叫优先接入包中本次呼叫的优先级和本次呼叫开始时 间加入到相应呼叫相关资源队列中进行排队后, 通过通知(Notify )消息在
PARes事件中通知 MSCe发生资源排队; MSCe收到 Notify消息后, 记录 Notify 消息携带的终结点标识符 ( Terminationld ), 并进行重启定时器、 通 知相关网元的操作。
本发明提供的一种实现呼叫优先接入的系统, 该系统包括: MSCe、 MGW; 其中,
MSCe, 用于在通知 MGW创建终端的消息中携带本次呼叫的优先级; MGW,用于接收 MSCe 通知的创建终端的消息,并获取消息中本次呼 叫的优先级; 申请本次呼叫的呼叫相关资源, 当所申请的呼叫相关资源忙 时, 根据本次呼叫的优先级进行呼叫优先接入处理。
上述方案中, 所述 MGW 包括: 消息接收模块、 呼叫优先接入模块; 其中,
消息接收模块, 用于接收 MSCe 通知的创建终端的消息, 并获取消息 中本次呼叫的优先级, 并将所述本次呼叫的优先级发送到呼叫优先接入模 块;
呼叫优先接入模块, 用于申请本次呼叫的呼叫相关资源, 当所申请的 呼叫相关资源忙时, 根据本次呼叫的优先级进行呼叫优先接入处理。
上述方案中,所述 MSCe,具体用于在通知 MGW创建终端的消息中携 带呼叫优先接入包, 所述呼叫优先接入包包括 PriorityAccessLevel属性, 用 于设定本次呼叫的优先级。
上述方案中, 所述呼叫优先接入模块还用于在所述呼叫优先接入包包 括 PriorityMethod属性时, 按照 PriorityMethod属性所指定的呼叫优先接入 方式进行呼叫优先接入处理。
上述方案中, 在呼叫优先接入包中包括 PARes事件时, 所述呼叫优先 接入模块, 进一步用于在将本次呼叫按照呼叫优先接入包中本次呼叫的优 先级和本次呼叫开始时间加入到相应呼叫相关资源队列中进行排队后, 通
过 Notify消息在 PARes事件中通知 MSCe发生资源排队;
相应的, 所述 MSCe还用于收到 Notify消息后, 记录 Notify消息携带 的 Terminationld , 并进行重启定时器、 通知相关网元的操作。
本发明提供的一种实现呼叫优先接入的方法和系统, MSCe 在通知 MGW创建终端的消息中携带本次呼叫的优先级; MGW获取所述本次呼叫 的优先级; MGW申请本次呼叫的呼叫相关资源, 当 MGW所申请的呼叫相 关资源忙时, 根据本次呼叫的优先级进行呼叫优先接入处理; 如此, 可以 使 MGW在申请呼叫相关资源时按照优先接入的方式实现, 丰富和完善了 通信网络的呼叫优先接入业务, 应用前景广泛。 附图说明
图 1为本发明实现呼叫优先接入的方法的流程示意图;
图 2为本发明实现呼叫优先接入的系统的结构示意图;
图 3为呼叫相关资源以 RTP资源为例, 实现本发明呼叫优先接入的方 法的流程示意图。 具体实施方式
本发明的基本思想是: MSCe在通知 MGW创建终端的消息中携带本 次呼叫的优先级信息; MGW获取所述本次呼叫的优先级; MGW申请本次 呼叫的呼叫相关资源, 当 MGW所申请的呼叫相关资源忙时, 根据本次呼 叫的优先级进行呼叫优先接入处理。
下面通过附图及具体实施例对本发明做进一步的详细说明。
本发明实现呼叫优先接入的方法, 如图 1 所示, 该方法包括以下几个 步骤:
步骤 101 : MSCe在通知 MGW创建终端的消息中携带本次呼叫的优先 级;
本步骤中, 所述携带本次呼叫的优先级可以是在通知 MGW创建终端 的消息中携带呼叫优先接入包, 所述呼叫优先接入包包括 PriorityAccessLevel属性, 用于设定本次呼叫的优先级; 进一步的, 所述呼 叫优先接入包还可以包括 PriorityMethod属性, 用于指定呼叫优先接入方 式, 所述呼叫优先接入方式包括强占方式 (ForcedWay ) 和队列方式 ( Queue Way )等; 进一步的,所述呼叫优先接入包还可以包括 PARes事件, 用于 MGW在检测到申请的呼叫相关资源忙、 并且釆用队列方式将本次呼 叫加入相应呼叫相关资源队列中进行排队的时候, 报告本次优先接入呼叫 的结果;
所述呼叫优先接入包的定义可以是:
Properties:
Priority Access Level:
PropertylD: PriorityAccessLevel(0x0001 );
Description: 定义呼叫优先接入的优先级,数字越小,优先级越高; Type: Integer;
Possible values: 0-15;
Defined in: Local Control Descriptor;
Characteristics: Read/Write;
Priority Method:
PropertylD: PriorityMethod (0x0002);
Description: 指示 MGW使用的呼叫优先接入方式;
Type: Enumeration;
Possible values:
"ForcedWay"(0x0001): 抢占方式;
"Queue Way" (0x0002): 队列方式;
Defined in: Local Control Descriptor;
Characteristics: Read/Write;
Events:
EventID: PARes ( 0x0001 );
Description: 用于 4艮告本次呼叫优先接入的结果;
EventsDescriptor Parameters: None;
ObservedEventsDescriptor Parameters:
Parameterld: result (0x0001);
Description: 用于 4艮告呼叫优先接入的结果;
Type: Enumeration;
Possible Values:
"PAQueue Way"(0x0001 ): MGW上发生 Queue Way方式的 优先接入呼叫。
Signals: None;
Statistics: None;
Procedures: None。 所述本次呼叫的优先级的获取可以按照现有的呼叫优先接入协议中获 取优先级的方法进行获取, 如 PACA协议中, 通过用户的签约属性获取呼 叫的优先级;
所述通知 MGW创建终端的消息一般是 Add消息;
所述呼叫相关资源包括 RTP资源、 TC资源、 IWF资源、 T.38传真所 用的资源等。
步骤 102: MGW接收 MSCe通知的创建终端的消息,并获取其中的本 次呼叫的优先级;
步骤 103: MGW申请本次呼叫的呼叫相关资源 , 当 MGW所申请的呼 叫相关资源忙时,执行步骤 104; 当 MGW申请到本次呼叫的呼叫相关资源 时, 执行步骤 105;
步骤 104: MGW根据本次呼叫的优先级进行呼叫优先接入处理, 流程 结束。
例如: 预先配置的呼叫优先接入方式为强占方式, 则 MGW所申请的 呼叫相关资源忙时, 将强制释放一个呼叫优先级比本次呼叫的优先级低的 相应呼叫相关资源, 并通知该呼叫相关资源所在的呼叫分支的 MSCe释放 该呼叫分支, MSCe收到所述通知则释放所述呼叫分支; MGW对本次呼叫 使用释放所述呼叫分支的呼叫相关资源, 并记录该呼叫相关资源的优先级 为本次呼叫的优先级; 然后, 通过回复消息(Reply )通知 MSCe创建终端 成功;
进一步的, 如果 MGW没有查找到比本次呼叫的优先级低的所述呼叫 相关资源, 则通过 Reply消息通知 MSCe创建终端失败。
再如: 预先配置的呼叫优先接入方式为队列方式, 则 MGW所申请的 呼叫相关资源忙时, 将本次呼叫按照本次呼叫的优先级和本次呼叫开始时 间加入到相应呼叫相关资源队列中进行排队, 并启动保护定时器 Timer— Queue Way, 防止 MGW—直在队列等待; 当 MGW检测到有空闲的 呼叫相关资源时, 则将该呼叫相关资源优先给排在所述呼叫相关资源队列 首部的一个呼叫使用,并通过 Reply消息通知使用该呼叫相关资源的呼叫所 对应的 MSCe创建终端成功;
进一步的,所述保护定时器 Timer— Queue Way超时时, MGW通过 Reply 消息通知相应呼叫的 MSCe创建终端失败;
进一步的, MGW 收到呼叫优先接入包, 所述呼叫优先接入包中包括 PARes事件, 则该 MGW在将本次呼叫按照呼叫优先接入包中本次呼叫的 优先级和本次呼叫开始时间加入到相应呼叫相关资源队列中进行排队后, 通过 Notify消息在 PARes事件中通知 MSCe发生资源排队,即:所述 Notify 消息携带呼叫优先接入包, 该呼叫优先接入包中 PARes=PAQueueWay、 以 及携带 Terminationld; MSCe收到 Notify消息后, 记录 Terminationld, 并做 重启定时器、通知其他相关网元等操作,这里所述重启定时器为重启 MSCe 在发送通知 MGW创建终端的消息时所启动的定时器。
本步骤进一步包括: MGW收到呼叫优先接入包,按照呼叫优先接入包 中 PriorityMethod属性所指定的呼叫优先接入方式进行呼叫优先接入处理, 其中,指定呼叫优先接入方式为强占方式时, MGW进行呼叫优先接入处理 的方法与上述的预先配置的呼叫优先接入方式为强占方式时的方法相同; 指定呼叫优先接入方式为队列方式时, MGW进行呼叫优先接入处理的方法 与上述的预先配置的呼叫优先接入方式为队列方式时的方法相同;
上述预先配置的呼叫优先接入方式, 一般是预先配置在 MGW后台的 呼叫优先接入方式;
在呼叫优先接入方式为队列方式时, 本步骤还包括: MSCe在发送通知 MGW创建终端的消息时所启动的定时器超时或者收到其他相关网元的释 放消息的时候,通过 Subtract消息通知 MGW释放终端和呼叫优先队列中的 相应呼叫。
步骤 105: MGW记录申请到的呼叫相关资源的优先级为本次呼叫的优 先级, 通过 Reply消息通知 MSCe创建终端成功。
为了实现上述方法, 本发明还提供了一种实现呼叫优先接入的系统, 如图 2所示, 该系统包括: MSCe 21 , MGW 22; 其中,
MSCe 21 , 用于在通知 MGW 22创建终端的消息中携带本次呼叫的优 先级;
MGW 22, 用于接收 MSCe 21通知的创建终端的消息, 并获取其中的 本次呼叫的优先级; 申请本次呼叫的呼叫相关资源, 当所申请的呼叫相关 资源忙时, 根据本次呼叫的优先级进行呼叫优先接入处理;
所述 MSCe 21在通知 MGW 22创建终端的消息中携带本次呼叫的优先 级, 一般的, MSCe 21在通知 MGW 22创建终端的消息中携带呼叫优先接 入包, 所述呼叫优先接入包包括 PriorityAccessLevel属性, 用于设定本次呼 叫的优先级;进一步的,所述呼叫优先接入包可以包括 PriorityMethod属性, 用于指定呼叫优先接入方式, 所述呼叫优先接入方式包括强占方式和队列 方式等;进一步的,所述呼叫优先接入包还可以包括 PARes事件,用于 MGW 22在检测到申请的呼叫相关资源忙、 并且釆用队列方式将本次呼叫加入相 应呼叫相关资源队列中进行排队的时候, 报告本次优先接入呼叫的结果; 所述 MGW 22包括: 消息接收模块 221、呼叫优先接入模块 222;其中, 消息接收模块 221 , 用于接收 MSCe 21通知的创建终端的消息, 并获
取其中的本次呼叫的优先级, 并将所述本次呼叫的优先级发送到呼叫优先 接入模块 222;
呼叫优先接入模块 222, 用于申请本次呼叫的呼叫相关资源, 当所申请 的呼叫相关资源忙时, 根据本次呼叫的优先级进行呼叫优先接入处理; 例如, 预先配置的呼叫优先接入方式为强占方式, 则所述呼叫优先接 入模块 222所申请的呼叫相关资源忙时, 强制释放一个呼叫优先级比本次 呼叫的优先级低的相应呼叫相关资源, 并通知该呼叫相关资源所在的呼叫 分支的 MSCe 21释放该呼叫分支; 在 MSCe 21释放所述呼叫分支后, 所述 呼叫优先接入模块 222对本次呼叫使用释放所述呼叫分支的呼叫相关资源, 并记录该呼叫相关资源的优先级为本次呼叫的优先级; 然后, 通过 Reply 消息通知 MSCe 21创建终端成功;
进一步的, 如果所述呼叫优先接入模块 222没有查找到比本次呼叫的 优先级低的所述呼叫相关资源, 则通过 Reply消息通知 MSCe 21创建终端 失败。
再如, 预先配置的呼叫优先接入方式为队列方式, 则所述呼叫优先接 入模块 222所申请的呼叫相关资源忙时, 将本次呼叫按照本次呼叫的优先 级和本次呼叫开始时间加入到相应呼叫相关资源队列中进行排队, 并启动 保护定时器 Timer— Queue Way; 当所述呼叫优先接入模块 222检测到有空闲 的相应呼叫相关资源时, 则将该呼叫相关资源优先给排在所述呼叫相关资 源队列首部的一个呼叫使用,并通过 Reply消息通知使用该呼叫相关资源的 呼叫所对应的 MSCe 21创建终端成功;
进一步的,所述保护定时器 Timer— Queue Way超时时,所述呼叫优先接 入模块 222通过 Reply消息通知相应呼叫的 MSCe 21创建终端失败;
进一步的, 所述呼叫优先接入模块 222在将本次呼叫按照呼叫优先接 入包中本次呼叫的优先级和本次呼叫开始时间加入到相应呼叫相关资源队
列中进行排队后 , 在呼叫优先接入包中包括 PARes事件时 , 通过 Notify消 息在 PARes事件中通知 MSCe 21发生资源排队, 即: 所述 Notify消息携带 呼叫优先接入包, 该呼叫优先接入包中 PARes=PAQueueWay、 以及携带 Terminationld;
相应的,所述 MSCe 21还用于收到 Notify消息后,记录 Terminationld, 并做重启定时器、 通知其他相关网元等操作, 这里所述重启定时器为重启 MSCe 21在发送通知 MGW 22创建终端的消息时所启动的定时器。
进一步的, 所述呼叫优先接入模块 222还用于在呼叫优先接入包包括 PriorityMethod属性时, 按照 PriorityMethod属性所指定的呼叫优先接入方 式进行呼叫优先接入处理;
进一步的, 所述 MSCe 21还用于在发送通知创建终端的消息时所启动 的定时器超时或者收到其他相关网元的释放消息的时候,通过 Subtract消息 通知 MGW 22释放终端和呼叫优先队列中的相应呼叫;
相应的,所述消息接收模块 221还用于接收到 Subtract消息后,通知呼 叫优先接入模块 222;所述呼叫优先接入模块 222释放对应的终端和呼叫优 先队列中的相应呼叫;
进一步的, 所述呼叫优先接入模块 222, 还用于在申请到本次呼叫的呼 叫相关资源时, 记录申请到的呼叫相关资源的优先级为本次呼叫的优先级, 通过 Reply消息通知 MSCe 21创建终端成功。 呼叫相关资源以 RTP资源为例, 实现本发明呼叫优先接入的方法, 如 图 3所示, 该方法包括以下几个步骤:
步骤 301 : MSCe在添加(Add ) 消息中携带呼叫优先接入包, 所述呼 叫优先接入包中包括本次呼叫的优先级;
本步骤中, 所述呼叫优先接入包可以包括 PriorityAccessLevel属性, 用
于设定本次呼叫的优先级; 进一步的, 所述呼叫优先接入包可以包括
PriorityMethod属性, 用于指定呼叫优先接入方式, 所述呼叫优先接入方式 包括强占方式和队列方式等; 进一步的, 所述呼叫优先接入包还可以包括 PARes事件, 用于 MGW在检测到申请的 RTP资源忙、 并且釆用队列方式 将本次呼叫加入相应 RTP资源队列中进行排队的时候, 报告本次优先接入 呼叫的结果;
所述本次呼叫的优先级的获取可以按照现有的呼叫优先接入协议中获 取优先级的方法进行获取, 如 PACA协议中, 通过用户的签约属性获取呼 叫的优先级。
步骤 302: MGW接收添加消息, 并获取其中的呼叫优先接入包; 步骤 303: MGW申请本次呼叫的 RTP资源, 当 MGW所申请的 RTP 资源忙时, 执行步骤 304; 当 MGW申请到本次呼叫的 RTP资源时, 执行 步骤 305;
步骤 304: MGW根据呼叫优先接入包中本次呼叫的优先级进行呼叫优 先接入处理, 流程结束。
例如: 预先配置的呼叫优先接入方式为强占方式, 则 MGW所申请的 RTP 资源忙时, 将强制释放一个呼叫优先级比呼叫优先接入包中本次呼叫 的优先级低的相应 RTP资源, 并通知该 RTP资源所在的呼叫分支的 MSCe 释放该呼叫分支, MSCe收到所述通知则释放这个呼叫分支, 所述通知一般 是通过 Notify消息上报现有 Add消息中的 G包 CAUSE事件; MGW对本 次呼叫使用释放所述呼叫分支的 RTP资源, 并记录该 RTP资源的优先级为 呼叫优先接入包中本次呼叫的优先级; 然后, 通过 Reply 消息通知 MSCe 创建终端成功;
进一步的, 如果 MGW没有查找到比呼叫优先接入包中本次呼叫的优 先级低的 RTP资源, 则通过 Reply消息通知 MSCe创建终端失败。
再如: 预先配置的呼叫优先接入方式为队列方式, 则 MGW所申请的 RTP 资源忙时, 将本次呼叫按照呼叫优先接入包中本次呼叫的优先级和本 次呼叫开始时间加入到相应 RTP资源队列中进行排队, 并启动保护定时器 Timer— Queue Way, 防止 MGW—直在队列等待; 当 MGW检测到有空闲的 RTP资源时, 则将该 RTP资源优先给排在所述 RTP资源队列首部的一个呼 叫使用, 并通过 Reply消息通知使用该 RTP资源的呼叫所对应的 MSCe创 建终端成功;
进一步的,所述保护定时器 Timer— Queue Way超时时, MGW通过 Reply 消息通知相应呼叫的 MSCe创建终端失败;
进一步的, MGW收到的呼叫优先接入包中包括 PARes事件,则该 MGW 在将本次呼叫按照呼叫优先接入包中本次呼叫的优先级和本次呼叫开始时 间加入到相应 RTP资源队列中进行排队后, 通过 Notify消息在 PARes事件 中通知 MSCe发生资源排队, 即: 所述 Notify消息携带呼叫优先接入包, 该呼叫优先接入包中 PARes=PAQueueWay、 以及携带终结点标识符 ( Terminationld ); MSCe收到 Notify消息后, 记录 Terminationld, 并#丈重 启定时器、 通知其他相关网元等操作, 这里所述重启定时器为重启 MSCe 在发送通知 MGW创建终端的消息时所启动的定时器。
本步骤进一步包括: MGW按照呼叫优先接入包中 PriorityMethod属性 所指定的呼叫优先接入方式进行呼叫优先接入处理;
上述预先配置的呼叫优先接入方式, 一般是预先配置在 MGW后台的 呼叫优先接入方式;
在呼叫优先接入方式为队列方式时, 本步骤还包括: MSCe在发送通知 MGW创建终端的消息时所启动的定时器超时或者收到其他相关网元的释 放消息的时候,通过 Subtract消息通知 MGW释放终端和呼叫优先队列中的 相应呼叫。
步骤 305: MGW记录申请到的 RTP资源的优先级为呼叫优先接入包中 本次呼叫的优先级, 通过回复消息通知 MSCe创建终端成功。
通过上述的方法, 可以使 MGW在申请呼叫相关资源时按照优先接入 的方式实现, 丰富和完善了通信网络的呼叫优先接入业务, 在通信网络全 面 IP 化的今天, 承载和控制相分离的思想早已经应用于码分多址 2000 ( CDMA2000 )、 宽带码分多址 ( WCDMA )、 时分同步码分多址 ( TD-SCDMA )、 下一代网络(NGN )、 IP多媒体子系统 ( IMS )等通信网 络, 应用本发明可以在这些网络实现呼叫优先接入业务, 应用前景非常广 泛。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围, 凡在本发明的精神和原则之内所作的任何修改、 等同替换和改进 等, 均应包含在本发明的保护范围之内。
Claims
1、 一种实现呼叫优先接入的方法, 其特征在于, 该方法包括: 移动交换仿真中心 (MSCe )在通知媒体网关 (MGW )创建终端的消 息中携带本次呼叫的优先级信息; MGW获取所述本次呼叫的优先级;
MGW申请本次呼叫的呼叫相关资源,当 MGW所申请的呼叫相关资源 忙时, 根据本次呼叫的优先级进行呼叫优先接入处理。
2、 根据权利要求 1所述的方法, 其特征在于, 预先配置呼叫优先接入 方式为强占方式; MGW所申请的呼叫相关资源忙时, 所述根据本次呼叫的 优先级进行呼叫优先接入处理为: 强制释放一个呼叫优先级比本次呼叫的 优先级低的相应呼叫相关资源, 并通知该呼叫相关资源所在的呼叫分支的 MSCe释放所述呼叫分支; MGW对本次呼叫使用释放所述呼叫分支的呼叫 相关资源, 并记录该呼叫相关资源的优先级为本次呼叫的优先级; 之后, 通知 MSCe创建终端成功。
3、 根据权利要求 1所述的方法, 其特征在于, 预先配置呼叫优先接入 方式为队列方式; MGW所申请的呼叫相关资源忙时, 所述根据本次呼叫的 优先级进行呼叫优先接入处理为: 将本次呼叫按照本次呼叫的优先级和本 次呼叫开始时间加入到相应呼叫相关资源队列中进行排队, 并启动保护定 时器; 当 MGW检测到有空闲的呼叫相关资源时, 则将该呼叫相关资源优 先给排在所述呼叫相关资源队列首部的一个呼叫使用 ,并通知对应的 MSCe 创建终端成功。
4、 根据权利要求 1至 3任一项所述的方法, 其特征在于, 所述携带本 次呼叫的优先级信息为: 在通知 MGW创建终端的消息中携带呼叫优先接 入包, 所述呼叫优先接入包包括 PriorityAccessLevel属性, 用于设定本次呼 叫的优先级。
5、 根据权利要求 4所述的方法, 其特征在于, 所述呼叫优先接入包进 一步包括 PriorityMethod属性, 用于指定呼叫优先接入方式, 所述呼叫优先 接入方式包括强占方式、 队列方式;
所述 MGW按照呼叫优先接入包中 PriorityMethod属性所指定的呼叫优 先接入方式进行呼叫优先接入处理。
6、 根据权利要求 4所述的方法, 其特征在于, 所述呼叫优先接入包还 包括优先接入结果(PARes )事件,用于 MGW在所申请的呼叫相关资源忙、 并且釆用队列方式将本次呼叫加入相应呼叫相关资源队列中进行排队的时 候, 报告本次优先接入呼叫的结果;
所述 MGW收到的呼叫优先接入包中包括 PARes事件 , 则所述 MGW 在将本次呼叫按照呼叫优先接入包中本次呼叫的优先级和本次呼叫开始时 间加入到相应呼叫相关资源队列中进行排队后, 通过通知(Notify )消息在 PARes事件中通知 MSCe发生资源排队; MSCe收到 Notify消息后, 记录 Notify 消息携带的终结点标识符 ( Terminationld ), 并进行重启定时器、 通 知相关网元的操作。
7、 一种实现呼叫优先接入的系统, 其特征在于, 该系统包括: MSCe, MGW; 其中,
MSCe,用于在通知 MGW创建终端的消息中携带本次呼叫的优先级信 息;
MGW,用于接收 MSCe 通知的创建终端的消息,并获取消息中本次呼 叫的优先级; 申请本次呼叫的呼叫相关资源, 当所申请的呼叫相关资源忙 时, 根据本次呼叫的优先级进行呼叫优先接入处理。
8、 根据权利要求 7所述的系统, 其特征在于, 所述 MGW包括: 消息 接收模块、 呼叫优先接入模块; 其中,
消息接收模块, 用于接收 MSCe 通知的创建终端的消息, 并获取消息 中本次呼叫的优先级, 并将所述本次呼叫的优先级发送到呼叫优先接入模 块;
呼叫优先接入模块, 用于申请本次呼叫的呼叫相关资源, 当所申请的 呼叫相关资源忙时, 根据本次呼叫的优先级进行呼叫优先接入处理。
9、 根据权利要求 7或 8所述的系统, 其特征在于, 所述 MSCe, 具体 用于在通知 MGW创建终端的消息中携带呼叫优先接入包, 所述呼叫优先 接入包包括 PriorityAccessLevel属性, 用于设定本次呼叫的优先级。
10、 根据权利要求 9所述的系统, 其特征在于, 所述呼叫优先接入模 块还用于在所述呼叫优先接入包包括 PriorityMethod 属性时 , 按照 PriorityMethod属性所指定的呼叫优先接入方式进行呼叫优先接入处理。
11、 根据权利要求 9或 10所述的系统, 其特征在于, 在呼叫优先接入 包中包括 PARes事件时, 所述呼叫优先接入模块, 进一步用于在将本次呼 叫按照呼叫优先接入包中本次呼叫的优先级和本次呼叫开始时间加入到相 应呼叫相关资源队列中进行排队后, 通过 Notify消息在 PARes事件中通知 MSCe发生资源排队;
相应的, 所述 MSCe还用于收到 Notify消息后, 记录 Notify消息携带 的 Terminationld , 并进行重启定时器、 通知相关网元的操作。
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US7864752B1 (en) * | 2006-08-09 | 2011-01-04 | Nortel Networks Limited | Bearer path resource matching in a wireless communication network |
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