WO2009121284A1 - 一种提供智能业务的方法、***及网关 - Google Patents

一种提供智能业务的方法、***及网关 Download PDF

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Publication number
WO2009121284A1
WO2009121284A1 PCT/CN2009/071045 CN2009071045W WO2009121284A1 WO 2009121284 A1 WO2009121284 A1 WO 2009121284A1 CN 2009071045 W CN2009071045 W CN 2009071045W WO 2009121284 A1 WO2009121284 A1 WO 2009121284A1
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WO
WIPO (PCT)
Prior art keywords
protocol
intelligent
service
call
service control
Prior art date
Application number
PCT/CN2009/071045
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English (en)
French (fr)
Inventor
吴燕宇
林霖
胡鹏
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP09727763A priority Critical patent/EP2262213A4/en
Publication of WO2009121284A1 publication Critical patent/WO2009121284A1/zh
Priority to US12/893,511 priority patent/US8929357B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Arrangements for interconnection between switching centres
    • H04M7/12Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
    • H04M7/1205Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
    • H04M7/126Interworking of session control protocols
    • H04M7/127Interworking of session control protocols where the session control protocols comprise SIP and SS7
    • 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
    • H04L65/10Architectures or entities
    • H04L65/102Gateways
    • H04L65/1023Media gateways
    • H04L65/103Media gateways in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements
    • H04Q3/0016Arrangements providing connection between exchanges
    • H04Q3/0029Provisions for intelligent networking
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements
    • H04Q3/0016Arrangements providing connection between exchanges
    • H04Q3/0029Provisions for intelligent networking
    • H04Q3/0045Provisions for intelligent networking involving hybrid, i.e. a mixture of public and private, or multi-vendor systems

Definitions

  • the present invention relates to a communication technology, and in particular, to an intelligent service method and system based on an IP bearer.
  • Existing networks are, for example, the Public Switched Telephone Network (PSTN), and for example, the Public Land Mobile Network (PLMN).
  • PSTN Public Switched Telephone Network
  • PLMN Public Land Mobile Network
  • the newly developed network is, for example, the Next Generation Network (NGN), and the third generation mobile communication (The Third Generation, 3G for short).
  • NTN Next Generation Network
  • 3G Third Generation
  • GGW Gate Way
  • IP Internet Protocol
  • TDM Time Division Multiplexing
  • TDM time division multiplexing
  • IP Internet Protocol
  • a method for providing an intelligent service comprising: receiving an internet protocol-based call information sent by a switching device, where the call information includes service control function identification information and call identification information; and the service control function obtained by parsing the call information The identification information and the call identification information, initiate an assistance request to the service control device; receive a resource operation indication returned by the service control device, and provide a service resource service according to the resource operation indication.
  • a system for providing an intelligent service comprising an intelligent peripheral subsystem, a switching device and a service control device, wherein: an intelligent peripheral subsystem, the intelligent peripheral subsystem is used for:
  • the Internet Protocol-based call information sent by the switching device initiates an assistance request to the service control device according to the service control function identification information and the call identification information obtained by parsing the call information, and is returned according to the service control device.
  • the resource operation indication provides a service resource service; the switching device is configured to communicate with the intelligent peripheral subsystem to implement a service triggering function; and the service control device is configured to communicate with the intelligent peripheral subsystem to implement a service control function.
  • An intelligent peripheral subsystem comprising: a first module, configured to receive an internet protocol-based call information sent by a switching device, and parse the call information to obtain identification information and call identification information of a service control function; and a request module, configured to The service control function identification information and the call identification information are used to initiate a assistance request to the service control device.
  • the resource capability module is configured to receive a resource operation indication returned by the service control device and provide a service resource service according to the resource operation indication.
  • a gateway that communicates with an intelligent peripheral through a time division multiplexing protocol including: one or any combination of the following modules: SIGTRAN application module, an intelligent network application protocol for transmitting received SIGTRAN based signaling After being converted into the time division multiplexing mode, the protocol is sent out, and/or the received time division multiplexing mode protocol is converted into an intelligent network application protocol based on the signaling SIGTRAN mode, and then sent; a module, configured to convert the received Internet Protocol-based call control protocol into the time division multiplexing protocol, and/or, convert the received time division multiplexing protocol into an internet protocol based call After the control protocol is sent, the second conversion module is configured to convert the received Internet Protocol-based media streaming protocol into the time division multiplexing protocol, and/or send the received time division The multiplexed protocol is translated into an Internet Protocol-based media streaming protocol and sent out.
  • SIGTRAN application module an intelligent network application protocol for transmitting received SIGTRAN based signaling
  • the protocol is sent out, and/or the received time division multiplexing mode protocol
  • the above intelligent business system, intelligent peripheral subsystem, and method and gateway for providing intelligent service is carried on the IP network, and the corresponding service in the original service control device can be retained in the NGN core network, thereby saving operator investment and keeping the end user service experience unchanged; thereby simplifying network management and maintenance.
  • FIG. 1 is a schematic structural diagram of an intelligent network according to an embodiment
  • FIG. 2 is a schematic structural diagram of an intelligent peripheral subsystem of a specific implementation manner
  • FIG. 3 is a schematic structural diagram of an intelligent peripheral subsystem of another specific embodiment
  • FIG. 4 is a schematic structural diagram of an intelligent peripheral subsystem of another specific embodiment
  • FIG. 5 is a schematic structural diagram of an intelligent peripheral subsystem of another specific embodiment
  • 6A is a schematic structural diagram of an intelligent network according to another specific embodiment
  • 6B is a schematic structural diagram of an intelligent network according to another specific embodiment
  • 6C is a schematic structural diagram of an intelligent network according to another specific embodiment
  • FIG. 7 is a flow chart of a method for providing intelligent service according to an embodiment
  • FIG. 8 is a signaling flowchart of an intelligent service provided by a specific implementation manner
  • FIG. 9 is a signaling flow chart of intelligent service provisioning in another specific embodiment.
  • One embodiment of the present invention provides a system for providing intelligent services, the system comprising: an intelligent peripheral subsystem operable to communicate with a switching device and a service control device; the intelligent peripheral subsystem; for receiving exchange
  • the network protocol-based call information sent by the device initiates an assistance request to the service control device according to the service control function identification information and the call identification information obtained by parsing the call information, and operates according to the resource returned by the service control device. Indicates the provision of business resource services.
  • a switching device for implementing a service triggering function for example, a service control device (for example, a service control point SCP, for example) for implementing service control, and a bearer for implementing the bearer are provided.
  • Switched media gateway eg media gateway MGW.
  • the switching device includes, but is not limited to, a softswitch system SoftSwitch, a Service Switching Point (SSP), a Service Switching Function Management Entity (SSME), an Intelligent Service Switch (ISS), and a mobile device.
  • a device used to implement a service trigger function such as a Mobile Switching Center (MSC).
  • the intelligent peripheral subsystem communicates with the media gateway using an internet protocol based media streaming protocol.
  • the intelligent peripheral subsystem communicates with the service control device by using an intelligent network application protocol based on signaling SIGTRAN mode.
  • FIG. 1 a network architecture diagram of a specific implementation of a system providing intelligent services is shown.
  • the system includes SoftSwitchl2, SCP11, intelligent peripheral subsystem 10, MGW13; wherein, SoftSwitchl2 is used to implement service triggering function, SCP11 is used to implement service control function, and intelligent peripheral subsystem 10 is used to provide resource capability, such as playback. Receive number; MGW13 is used to implement bearer switching.
  • the Intelligent Peripheral Subsystem 10 communicates with SoftSwitchl2 using an Internet Protocol based call control protocol.
  • the Internet Protocol-based call control protocol may be any protocol based on the Internet Protocol-based call control between the intelligent peripheral subsystem 10 and SoftSwitch12.
  • the call refers to two users, or A request for communication established between the terminal or the device.
  • the intelligent network application protocol communication based on the signaling (Over SIGTRAN) mode can be used between the SoftSwitch and the SCP 11.
  • the intelligent intelligent network is the intelligent network application protocol protocol protocol INAP
  • the GSM mobile network is the CAMEL Application Part (CAP) protocol
  • CAP CAMEL Application Part
  • MAP Mobile Application Part
  • All of the above protocols can be carried in a Signaling Transport (SIGTRAN)-based manner.
  • the media gateway control protocol can be used for communication between SoftSwitchl2 and MGW13.
  • the H.248 protocol can be used for communication
  • the Media Gateway Control Protocol (MGCP) protocol can also be used.
  • An intelligent network application protocol letter based on the signaling (Over SIGTRAN) method can be used between the intelligent peripheral subsystem 10 and the SCP 11.
  • the intelligent intelligent network is the intelligent network application protocol protocol protocol INAP
  • the GSM mobile network is the CAP protocol.
  • the CDMA mobile network it is the Wireless Intelligent Network (WIN) MAP protocol.
  • the above protocols can all be carried on SIGTRAN.
  • the traffic between the intelligent peripheral subsystem 10 and the MGW 13 communicates using an Internet Protocol based media streaming protocol.
  • media streams such as voice signals
  • RTP ⁇ RTCP Real-time Transport Protocol Real-time Transport Control Protocol
  • TDM such as El and T1 protocols.
  • This embodiment differs from the traditional network in that it is at least partially carried by the TCP ⁇ IP network, that is, these signals are transmitted on the TCP ⁇ IP network.
  • This implementation makes the maintenance of the intelligent service network easier and more convenient.
  • an intelligent peripheral subsystem is provided. Referring to FIG. 2, it is a schematic structural diagram of an intelligent peripheral subsystem 10, where the intelligent peripheral subsystem includes:
  • the first module 102 is configured to receive the Internet Protocol-based call information sent by the switching device, and parse the call information to obtain the service control function identifier information and the call identifier information.
  • the module can support the Internet Protocol-based call control protocol signaling transmission of the call.
  • the intelligent peripheral subsystem 10 can communicate with the SoftSwitchl2 through SIP signaling or the H.323 protocol. .
  • the requesting module 104 is configured to initiate an assistance request to the service control device according to the service control function identification information and the call identification information.
  • the resource capability module 100 is configured to receive a resource operation indication returned by the service control apparatus, and provide a service resource service according to the resource operation indication. This module performs the basic functions of existing intelligent peripherals, such as playback, recording, fax, video playback, and more.
  • the intelligent peripheral subsystem may further include:
  • the second module 103 establishes a media stream to the media gateway through an internet protocol based media streaming protocol. That is, the second module 103 can support the media stream transmission protocol signaling transmission of the media stream. For example, through the Internet Protocol-based media streaming protocol application module 103, the intelligent peripheral device 10 can complete the media with the MGW 13 through the RTPVRTCP protocol. Stream communication.
  • the intelligent peripheral subsystem can also include:
  • the SIGTRAN application module 101 is disposed between the requesting module 104, the resource providing capability module 100, and the service control device, and is configured to support transmission of an intelligent network application protocol based on a Signaling Transport (SIGTRAN) method.
  • SIGTRAN application module 101 the intelligent peripheral subsystem 10 can communicate with the SCP 11 in the INAP over SIGTRAN protocol.
  • the intelligent peripheral subsystem may further include the foregoing second module 103 and the SIGTRAN application module 101.
  • the functions of each unit are described in detail in the foregoing, and are not described herein.
  • the SIGTRAN application module 101, the first module 102, and the second module 103 may be combined with the request module 104 and the resource providing capability module 100 to form a single intelligent peripheral device;
  • the request module 104 and the gateway providing the resource capability module 100 can also be combined to form a gateway independent of the request module 104 and the resource capability module 100 (corresponding to the original intelligent peripheral device).
  • the independent gateway communicates with the request module and the resource providing capability module 100 by using an existing TDM method (for example, E1 protocol, T1 protocol). That is to say, these independent gateways have the function of bidirectionally converting the protocol between the IP-based protocol and the TDM mode.
  • the intelligent peripheral subsystem includes a first gateway 14 and an intelligent peripheral device 10A.
  • the first gateway 14 is configured to support transmission of the intelligent network application protocol with the service control device based on the Signaling Transport (SIGTRAN) mode.
  • the first gateway 14 and the intelligent peripheral device 10A are still transmitted using the TDM method (e.g., El, T1 protocol). That is to say, the first gateway 14 can implement bidirectional conversion between the protocol transmitted in the TDM mode and the protocol in the SIGTRAN mode based on the signaling.
  • the intelligent peripheral subsystem 10 can communicate with the SCP 11 in the INAP over SIGTRAN protocol.
  • FIG. 6B it is a schematic diagram of a network structure of an intelligent service system based on an internet protocol.
  • the at least one second gateway 15 is based on an internet protocol for supporting a call with the switching device The call control protocol signaling transmission, and/or the media stream transmission protocol signaling transmission of the media stream between the media gateway and the media gateway.
  • the second gateway 15 communicates with the intelligent peripheral device 10B by using the existing E1 protocol, that is, the second gateway 15 can support the existing TDM mode (for example, El, T1 protocol) and the Internet Protocol-based protocol.
  • the second gateway 15 Conversion between (eg, call control protocol, media streaming protocol), for example, the second gateway 15 is used for E1 protocol-based communication with intelligent peripheral devices, and translates related communications into SIP-based signaling to SoftSwitch At the same time, the SIP-based signaling sent by the SoftSwitch can be converted into E1-based signaling and sent to the intelligent peripheral device.
  • the SIP-based signaling sent by the SoftSwitch can be converted into E1-based signaling and sent to the intelligent peripheral device.
  • the intelligent peripheral 10B is used to provide resource capabilities, and can also support the transmission of the intelligent network application protocol based on the SIGTRAN method. I will not go into details here.
  • FIG. 6C is a schematic diagram of a network structure of an Internet Protocol-based intelligent service system.
  • the intelligent service subsystem includes a first gateway 14, a second gateway 15, and an intelligent peripheral.
  • Device 10C is a schematic diagram of a network structure of an Internet Protocol-based intelligent service system.
  • the intelligent service subsystem includes a first gateway 14, a second gateway 15, and an intelligent peripheral.
  • Device 10C is a schematic diagram of a network structure of an Internet Protocol-based intelligent service system.
  • the first gateway 14 is configured to support transmission of an intelligent network application protocol based on a Signaling Transport (SIGTRAN) mode.
  • the first gateway 14 and the intelligent peripheral device 10B are still transmitted by the TDM method (for example, El, T1 protocol). That is to say, the first gateway 14 converts the original TDM-transported protocol into a protocol transmission by signaling-based SIGTRAN mode.
  • SIGTRAN Signaling Transport
  • a second gateway 15 an internet protocol based call control protocol signaling transmission for supporting a call with the switching device, and/or an internet protocol based media streaming protocol protocol supporting a media stream with the media gateway Order transmission.
  • the second gateway 15 communicates with the intelligent peripheral device 10B using an existing TDM method (e.g., El, T1 protocol). That is, the second gateway 15 can support the conversion between the existing TDM mode protocol and the Internet Protocol based protocol (e.g., call control protocol, media streaming protocol).
  • an existing TDM method e.g., El, T1 protocol
  • the second gateway 15 can support the conversion between the existing TDM mode protocol and the Internet Protocol based protocol (e.g., call control protocol, media streaming protocol).
  • the intelligent peripheral device 10C is used to provide resource capabilities. The same as the existing smart external device, and will not be described here.
  • a gateway such as the first gateway 14 and the second gateway 15, described above.
  • the gateway communicates with the intelligent peripheral through a time division multiplexing protocol, including:
  • the SIGTRAN application module is configured to support mutual conversion of the intelligent network application protocol based on the signaling delivery SIGTRAN mode and the protocol of the time division multiplexing mode. Transmitting the intelligent network application protocol based on the signaling delivery SIGTRAN mode into the time division multiplexing mode protocol, and then transmitting the received time division multiplexing mode protocol into signaling based signaling It is sent after passing the SIGTRAN intelligent network application protocol.
  • the foregoing intelligent network application protocol may be different in different systems, for example, the intelligent intelligent network is an intelligent network application protocol protocol INAP, and the GSM mobile network is a CAMEL Application Part (CAP) protocol, in CDMA. In the mobile network is the Mobile Application Part (MAP) protocol. All of the above protocols can be carried in a Signaling Transport (SIGTRAN)-based manner.
  • SIGTRAN Signaling Transport
  • a first conversion module configured to support inter-transformation of an internet protocol-based call control protocol for calling and a protocol of the time division multiplexing manner. That is, the received Internet Protocol-based call control protocol is converted into the time division multiplexing protocol and then sent out, and/or the received time division multiplexing protocol is converted into an Internet Protocol based call control protocol. After sending it out.
  • the Internet Protocol-based call control protocol may be any protocol based on the Internet Protocol-based call control between the intelligent peripheral subsystem 10 and the SoftSwitch 12, including but not limited to the Session Initiation Protocol. , SIP), ⁇ .323 protocol, etc.
  • a second conversion module configured to support mutual conversion of the Internet Protocol-based media streaming protocol of the media stream and the protocol of the time division multiplexing manner. That is, the received Internet Protocol-based media streaming protocol is converted into the time division multiplexing protocol and then sent out, and/or the received time division multiplexing protocol is converted into an internet protocol based protocol.
  • the media stream transmission protocol is sent out.
  • the Internet Protocol-based media streaming protocol such as the H.248 protocol, or the Media Gateway Control Protocol (MGCP)
  • the above application is used in the foregoing intelligent service system to cooperate with intelligent peripherals, so that the intelligent peripheral can use the Internet Protocol IP bearer, which simplifies the management and maintenance of the entire communication network.
  • the above-mentioned Internet Protocol-based call information (bearing on the Internet Protocol-based call control protocol) carries Service Control Function Identification (SCF ID) and Correlation ID (CORRELATION ID) information.
  • SCF ID Service Control Function Identification
  • CORRELATION ID Correlation ID
  • the SCF ID is used to identify an SCF process
  • the CORRELATION ID is used to identify a call instance.
  • the above-mentioned intelligent service system, intelligent peripheral subsystem (device), and the gateway used together have the following beneficial effects: Since in the traditional PSTN network, the Service Switching Point (SSP) is outside the smart The system 10 needs to carry the SCF ID and the CORRELATION ID information when the system 10 initiates the call.
  • the Internet Protocol-based protocol signaling carries the SCF ID and the CORRELATION ID information.
  • the foregoing embodiments can use the Internet Protocol IP bearer on the one hand, simplify the management and maintenance of the entire communication network, and on the other hand, satisfy the switching device (such as SSP) in the traditional PSTN network.
  • the logical relationship with the intelligent peripheral device enables the services on the traditional PSTN to be retained on the IP bearer network without affecting the user's experience with the service.
  • SoftSwitchl2 Before providing intelligent services, when there is an intelligent service request, SoftSwitchl2 analyzes and triggers the intelligent service, and triggers the intelligent service to SCP11. After SCP11 resolves the intelligent service, it instructs SoftSwitchl2 to establish a temporary connection to the intelligent peripheral subsystem.
  • intelligent peripheral subsystem herein refers to the intelligent peripheral subsystem in the foregoing system, and there are different situations, which will not be described here.
  • Step 701 The intelligent peripheral subsystem receives the call, and the call is initiated by the SoftSwitch2 through the Internet Protocol-based call control protocol, and carries the SCF ID and the CORRELATION ID information in the Internet Protocol-based call control protocol signaling.
  • the internet protocol based protocol includes but is not limited to: SIP protocol, H.323 protocol.
  • one or more separate gateways implement a call control protocol carried by the time division multiplexing mode and the based Mutual conversion of the call control protocol of the Internet Protocol; and/or, mutual conversion of the media stream transmission protocol carried by the time division multiplexing mode and the Internet Protocol based media stream transmission protocol.
  • Step 702 After the intelligent peripheral subsystem parses the received information and obtains the SCF ID and the CORRELATION ID information, the intelligent network application protocol transmitted by the SIGTRAN method initiates an assistance request to the SCP.
  • the intelligent network application protocol is, for example, the INAP protocol in a fixed intelligent network, the CAP protocol in a GSM mobile network, and the WIN MAP protocol in a CDMA mobile network.
  • Step 703 The intelligent peripheral subsystem receives the resource operation indication and provides a media resource service according to the resource operation indication, where the resource operation indication is sent by the SCP according to the service requirement and by the intelligent network application protocol transmitted according to the SIGTRAN mode.
  • the intelligent peripherals can also report the operation execution results of intelligent peripherals to SCP11 through SIGTRAN transmission. This process can be repeated multiple times during the actual communication process.
  • the above media resource services include:
  • Step 704 The intelligent peripheral subsystem establishes a media stream to the MGW by using an internet protocol-based media stream protocol.
  • the media streaming protocol is for example the RTPVRTCP protocol.
  • the method may further include: after detecting the user event, the SoftSwitchl2 reports the event to the SCP11, and performs subsequent operations according to the instruction of the SCP11. For example, after detecting that the user hangs up, SoftSwitchl2 reports the on-hook event to SCP11 and releases the aforementioned call to intelligent peripheral 10 according to the instruction of SCP11.
  • the network protocol-based protocol signaling carries the service control function identifier information SCF ID and the call identifier information CORRELATION ID information.
  • SCF ID is used to identify a service control function SCF process
  • CORRELATION ID is used to identify a call instance.
  • the foregoing method for providing an intelligent service uses external network protocol IP-based signaling, such as communication with a switching device, a service control device, and a media gateway, in an intelligent peripheral, so that in the process of providing an intelligent service, the core network Partially using a consistent protocol (Internet Protocol IP), reducing signaling and simplifying It also manages and maintains the network; it can also retain the intelligent services in the original traditional network, and will not affect the existing intelligent services.
  • IP-based signaling such as communication with a switching device, a service control device, and a media gateway
  • the Internet Protocol-based protocol is the SIP protocol
  • the intelligent network application protocol transmitted by the SIGTRAN mode is INAP over SIGTRAN
  • the media stream protocol is the RTP/RCTP protocol, according to the SIP signaling.
  • Different ways of carrying SCF ID and CORRELATION ID information introduce different processes for providing intelligent services.
  • the SCF ID and the CORRELATION ID information are carried by the INVITE message.
  • FIG. 8 a specific signaling flowchart of the method for providing intelligent services in which the INVITE message carries the SCF ID and the CORRELATION ID information is used. The following steps are included:
  • the Softswitch sends an Initial DP message to the SCP.
  • the 802 and the SCP send a Request Report BCSM Event message to the SoftSwitch.
  • the SCP sends an Establish Temporary Connection message to the SoftSwitch.
  • the SoftSwitch sends an INVITE message to the intelligent peripheral, where the INVITE message carries the SCF ID and the CORRELATION ID information.
  • the intelligent peripheral sends a 180 Alerting message to the SoftSwitch.
  • the above 804 ⁇ 805, that is, the intelligent peripheral receives the call, which is initiated by SoftSwitch through the Internet Protocol-based call control protocol, and carries the SCF ID and CORRELATION ID information in the INVITE message.
  • the intelligent peripheral sends an Assist Request Instructions message to the SCP.
  • the above-mentioned 806, that is, the intelligent peripheral parses the received information, and obtains the SCF ID and the CORRELATION ID information, and then sends an assistance request to the SCP through the intelligent network application protocol transmitted by the SIGTRAN method.
  • the SCP sends a Play Announcement message to the intelligent peripheral.
  • the intelligent peripheral sends a 200 ok message to the SoftSwitch.
  • the SoftSwitch returns an Ack message to the intelligent peripheral.
  • the intelligent peripheral sends a Special Resource Report message to the SCP. 811.
  • the SCP sends a Prompt And Collect User Information message to the intelligent peripheral.
  • the intelligent peripheral sends a PCR message to the SCP. (ie send Prompt And Collect User Information Respond response message)
  • the intelligent peripheral receives the resource operation indication and provides the media resource service according to the resource operation indication, and the resource operation indication is sent by the SCP according to the service requirement and transmitted through the SIGTRAN-based intelligent network application protocol.
  • the method can also include:
  • the Softswitch sends an EventReportBCSM message to the SCP.
  • the SCP returns a DisconnectForwardConnection message to the SoftSwitch.
  • the SoftSwitch sends a BYE message to the intelligent peripheral.
  • the intelligent peripheral returns a 200 ok message to the SoftSwitch.
  • the SCP sends a Release Call message to the SoftSwitch.
  • the above 813 - 817 that is, the SoftSwitch detects that the user hangs up, reports the on-hook event to the SCP, and releases the aforementioned call to the intelligent peripheral according to the instruction of the SCP.
  • the intelligent peripheral can parse the required SCF ID and CORRELATION ID information from the INVITE message, and complete the provisioning and termination of the smart service.
  • the SoftSwitch between the SoftSwitch and the SCP is a protocol based on the SIGTRAN transmission (ie, signaling), and between the intelligent peripheral and the SoftSwitch is the SIP protocol (ie, signaling), the intelligent peripheral and the SCP.
  • the protocol is based on SIGTRAN transmission (ie, signaling).
  • the above INVTE message may have different methods for carrying the SCF ID and the CORRELATION ID information:
  • a specific INVTE message carries the SCF ID and the CORRELATION ID information in the following manner:
  • the called number in the INVITE message carries the SCF ID and the CORRELATION ID information. Specifically:
  • the called number in the INVITE message may first place the routing number of the intelligent peripheral.
  • the SCF ID and the CORRELATION ID information are appended to the routing number of the intelligent peripheral path.
  • the order in which the above information is placed and the number of bits can be determined by configuration or by a specific combination of ending characters (such as E0).
  • Another specific INVTE message carries the SCF ID and the CORRELATION ID information in the following manner:
  • the SIP message header field in the INVITE message carries the SCF ID and the CORRELATION ID information.
  • the definition of the header field of the extended SIP message is used to carry the SCF ID and the CORRELATION ID information, and is carried in the INVITE message sent by the SoftSwitch1 to the intelligent peripheral.
  • a specific example is: INVITE sip: ... ...
  • the INVITE message carries the SCF ID and the CORRELATION ID information.
  • the INVITE message carries the SCF ID and the CORRELATION ID information.
  • the content type of the SIP signaling message body is defined and the content of the message body is defined, and is carried in the message body of the INVITE message initiated by the SoftSwitch to the intelligent peripheral.
  • Content-Type For example, Content-Type:
  • JLSCF ID XXXXXXXXX
  • CORRELATION ID
  • the manner in which the INVTE message carries the SCF ID and the CORRELATION ID information on the one hand enables the intelligent peripheral to use the IP-based protocol to provide services in the original legacy network. On the other hand, it does not need to add redundant signaling, and does not need to increase.
  • the steps of providing intelligent services optimize the process of providing intelligent services and reduce the burden on the communication network.
  • FIG. 9 is a specific signaling flowchart of a method for providing intelligent services by carrying an SCF ID and CORRELATION ID information by an INFO message. Includes the following steps:
  • the SoftSwitch sends an Initial DP message to the SCP.
  • the SCP sends a Request Report BCSM Event message to the SoftSwitch.
  • the SCP sends an Establish Temporary Connection message to the SoftSwitch.
  • SoftSwitch analyzes the triggered intelligent service and triggers the intelligent service to the SCP. After the SCP parses the intelligent service, it instructs the SoftSwitch to establish a temporary connection to the intelligent peripheral.
  • the SoftSwitch sends an INVITE message to the intelligent peripheral.
  • the specific embodiment is different from the previous embodiment, and the INVITE message does not carry the SCF ID and the CORRELATION ID information.
  • the intelligent peripheral sends a 180 Alerting message to the SoftSwitch.
  • the SoftSwitch sends an INFO message to the intelligent peripheral, where the INFO message carries the SCF ID and the CORRELATION ID information.
  • the intelligent peripheral sends a 200 For INFO message to the SoftSwitch.
  • the above 904 ⁇ 907 intelligent peripherals receive the call, which is initiated by SoftSwitch through the Internet Protocol-based call control protocol, and carries the SCF ID and CORRELATION ID information in the INFO message.
  • the intelligent peripheral sends an Assist Request Instructions message to the SCP.
  • the above 908 that is, the intelligent peripheral parses the received information, and obtains the SCF ID and the CORRELATION ID information, and then sends an assistance request to the SCP through the intelligent network application protocol transmitted by the SIGTRAN method.
  • the SCP sends a Play Announcement message to the intelligent peripheral.
  • the intelligent peripheral sends a 200 ok message to the SoftSwitch.
  • SoftSwitch returns an Ack message to the intelligent peripheral.
  • the intelligent peripheral sends a Special Resource Report message to the SCP.
  • the SCP sends a Prompt And Collect User Information message to the intelligent peripheral.
  • the intelligent peripheral sends a PCR message to the SCP. (ie send Prompt And Collect User Information Respond response message)
  • the intelligent peripheral receives the resource operation indication and provides the media resource service according to the resource operation indication
  • the resource operation indication is the SCP according to the service requirement and passes the SIGTRAN
  • the mode is transmitted by the intelligent network application protocol.
  • the Softswitch and the SCP are based on the SIGTRAN transmission protocol (ie, signaling), and between the intelligent peripheral and the Softswitch are the SIP protocol (ie, signaling), the intelligent peripheral and the SCP.
  • the protocol is based on SIGTRAN transmission (ie, signaling).
  • SCF ID and CORRELATION ID information there are also several different ways to carry the SCF ID and CORRELATION ID information in the INFO message.
  • One is carried in the header field of the extended definition in the INFO message. This situation is similar to that used in the header field of the INVITE message, and will not be described here.
  • the other is carried in the message body in the INFO message. This situation is similar to that carried by the INVITE message body, and will not be described here.
  • the intelligent peripheral can parse out the required SCF ID and CORRELATION ID information from the INFO message (for example, in the header field or the message body), and complete the intelligence on the basis of the above. The provision and end of the business.
  • the H.323 signaling also carries the SCF ID and the CORRELATION ID information.
  • the specific carrying method is similar to that in SIP signaling, and will not be described here.
  • the beneficial effect of carrying the SCF ID and CORRELATION ID information in various embodiments is that, in the traditional PSTN network, the SSP needs to carry the SCF ID and the CORRELATION ID when initiating a call to the intelligent peripheral, the SIP signaling carrying the SCF ID and the CORRELATION ID information, which enables SoftSwitchl2 and intelligent peripherals to maintain the logical relationship between SSP and intelligent peripherals in traditional PSTN networks. Thereby, the complexity of the construction of the network to IP development is reduced.
  • the intelligent service system and method, the intelligent peripheral device and the gateway carry the traditional intelligent service on the IP network, and can retain the original SCP and the corresponding service in the NGN core network, thereby saving operator investment and maintaining the end user service experience. ; thus simplifying the management and maintenance of the network.
  • the present invention can be implemented by means of software plus a general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a A computer device (which may be a personal computer, server, or network device, etc.) performs the methods described in various embodiments of the present invention.

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Description

一种提供智能业务的方法、 ***及网关
本申请要求于 2008 年 3 月 29 日提交中国专利局、 申请号为 200810066226.6、 发明名称为"一种提供智能业务的方法、 ***及网关"的中国 专利申请的优先权, 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及一种通信技术, 尤其涉及一种基于 IP承载的智能业务方法和 ***。
背景技术
随着通信技术的发展和成熟,新的网络建设逐渐增多, 因而需要实现现有 网络和新发展的网络的互通与统一发展。 现有的网络例如公用交换电话网 ( Public Switched Telephone Network , 简称 PSTN ),又例如公用陆地移动(通 信) 网 ( Public Land Mobile Network , 简称 PLMN )。 新发展的网络例如下一 代网络(Next Generation Network , 简称 NGN ), 又例如第三代移动通信( The Third Generation , 简称 3G )。
在现有的智能网实现方案中,软交换***( Soft Switch )和媒体网关( Media
Gate Way , 简称 MGW ) 实现网际协议( Internet Protocol, 简称 IP )化承载。 其中, Soft Switch用于实现信令处理、 呼叫控制及业务触发; MGW用于实现 承载交换(即话路)。 同时, 在用户终端侧, 依然保持现有传统窄带终端, 即 需要使用时分复用 (Time Division Multiplexing, TDM ) 方式 载。
发明人在实现本发明的过程中发现: 通信网络的核心网釆用 IP承载, 智 能网络釆用窄带承载, 由于承载方式的不同, 导致网络的管理、 维护复杂。 例 如, 承载方式不同会导致在 MGW上需要配置大量完成的承载转换处理的资 源, 增加投资、 及配置复杂性。 又例如, 在组网时既要考虑 IP方式, 又要考 虑时分复用 TDM方式(例如 El、 T1协议 ),组网复杂, 维护管理都更加复杂。 IP化改造后, 核心网完全 IP化, 但是还为业务保留 TDM承载, 则要同时维 护管理两个网络, 不能做到维护管理的统一。
发明内容
有鉴于此, 有必要提供一种基于网际协议(IP )的智能业务***, 来解决 网络的管理和维护复杂的问题。 同时, 提供一种提供业务的方法、 智能外设子***和网关。
一种提供智能业务的方法, 包括: 接收交换装置发送的基于网际协议的呼 叫信息, 该呼叫信息中包含业务控制功能标识信息和呼叫标识信息; 根据解析 所述呼叫信息得到的所述业务控制功能的标识信息和所述呼叫标识信息,向业 务控制装置发起协助请求; 接收所述业务控制装置返回的资源操作指示, 并根 据所述资源操作指示提供业务资源服务。
相应的 ,还提供了一种提供智能业务的*** ,该***包括智能外设子***、 交换装置和业务控制装置,其中:智能外设子***,所述智能外设子***用于: 接收所述交换装置发送的基于网际协议的呼叫信息,根据解析所述呼叫信息得 到的业务控制功能标识信息和所述呼叫标识信息向所述业务控制装置发起协 助请求, 并根据所述业务控制装置返回的资源操作指示提供业务资源服务; 所 述交换装置, 用于与所述智能外设子***通信, 实现业务触发功能; 所述业务 控制装置, 用于与所述智能外设子***通信, 实现业务控制功能。
一种智能外设子***, 包括: 第一模块, 用于接收交换装置发送的基于网 际协议的呼叫信息,解析上述呼叫信息得到业务控制功能的标识信息和呼叫标 识信息; 请求模块, 用于根据所述业务控制功能标识信息和呼叫标识信息向业 务控制装置发起协助请求; 提供资源能力模块, 用于接收所述业务控制装置返 回的资源操作指示并根据该资源操作指示提供业务资源服务。
一种网关, 该网关与智能外设通过时分复用方式的协议通信, 包括: 下列 模块之一或者任意组合: SIGTRAN应用模块, 用于将接收到的基于信令传递 SIGTRAN 方式的智能网应用协议转化为所述时分复用方式的协议后发送出 去, 和 /或, 将接收到的所述时分复用方式的协议转化为基于信令传递 SIGTRAN方式的智能网应用协议后发送出去; 第一转化模块, 用于将接收到 的基于网际协议的呼叫控制协议转化为所述时分复用方式的协议后发送出去, 和 /或, 将接收到的时分复用方式的协议转化为基于网际协议的呼叫控制协议 后发送出去; 第二转化模块, 用于将接收到的基于网际协议的媒体流传输协议 转化为所述时分复用方式的协议后发送出去, 和 /或, 将接收到的所述时分复 用方式的协议转化为基于网际协议的媒体流传输协议后发送出去。
上述智能业务***、 智能外设子***, 以及提供智能业务的方法、 网关, 将传统智能业务承载在 IP网络上,可以在 NGN核心网中保留原有业务控制装 置中相应的业务, 节省运营商投资, 保持最终用户业务体验不变; 从而简化网 络的管理和维护。
附图说明
图 1是一个具体实施方式的智能网络结构示意图;
图 2是一个具体实施方式的智能外设子***的结构示意图;
图 3是另一个具体实施方式的智能外设子***结构示意图;
图 4是另一个具体实施方式的智能外设子***的结构示意图;
图 5是另一个具体实施方式的智能外设子***结构示意图;
图 6A是另一个具体实施方式的智能网络结构示意图;
图 6B是另一个具体实施方式的智能网络结构示意图;
图 6C是另一个具体实施方式的智能网络结构示意图;
图 7是一个具体实施方式的智能业务提供的方法流程图;
图 8是一个具体实施方式的智能业务提供的信令流程图;
图 9是另一个具体实施方式的智能业务提供的信令流程图。
具体实施方式
本发明的一个实施方式中提供了一种提供智能业务的***, 该***包括: 智能外设子***, 可用于与交换装置和业务控制装置通信; 所述智能外设 子***; 用于接收交换装置发送的基于网际协议的呼叫信息,根据解析所述呼 叫信息得到的业务控制功能标识信息和所述呼叫标识信息向所述业务控制装 置发起协助请求,并根据所述业务控制装置返回的资源操作指示提供业务资源 服务。
另一个实施方式中, 除上述智能外设子***外,还包括用于实现业务触发 功能的交换装置、用于实现业务控制的业务控制装置(例如业务控制点 SCP,:)、 用于实现承载交换的媒体网关 (例如媒体网关 MGW)。 该交换装置包括但不限 于软交换*** SoftSwitch、 业务交换点 ( Service Switching Point, SSP )、 业务 交换功能管理实体 ( Service Switching function Management Entity, SSME )、 智能业务交换机 ( Intelligent Services Switch, ISS )、 移动交换中心 (Mobile Switching Center, MSC )等用于实现业务触发功能的装置。 另一具体实施方式中,所述智能外设子***与所述媒体网关使用基于网际 协议的媒体流传输协议通信。
另一具体实施方式中,所述智能外设子***与所述业务控制装置之间釆用 基于信令传递 SIGTRAN方式的智能网应用协议通信。
参考图 1所示,为一个提供智能业务的***的具体实施方式的网络结构示 意图。
该***包括 SoftSwitchl2、 SCP11、 智能外设子*** 10、 MGW13; 其中, SoftSwitchl2用于实现业务触发功能, SCP11用于实现业务控制的功能, 智能 外设子*** 10用于提供资源能力, 例如放音收号; MGW13用于实现承载交 换。
智能外设子*** 10与 SoftSwitchl2之间使用基于网际协议的呼叫控制协 议进行通信。具体的, 该基于网际协议的呼叫控制协议可以是任意一种在智能 外设子*** 10和 SoftSwitchl2之间的基于网际协议的起呼叫控制作用的协议, 一般的, 呼叫是指两个用户、 或者终端、 或者设备之间建立的通讯的请求。
另一具体实施方式中, SoftSwitchl2与 SCP11之间可以釆用基于信令传递 ( Over SIGTRAN )方式的智能网应用协议通信。
需要指出的是, 上述智能网应用协议在不同的***的中可以不同, 例如固 定智能网中是智能网应用规程协议 INAP, 在 GSM移动网络中是 CAMEL应 用部分(CAMEL Application Part , CAP )协议, 在 CDMA移动网络中是移 动应用部分 ( Mobile Application Part , MAP )协议。 上述协议都可以承载在 以基于信令传递( Signaling Transport , SIGTRAN ) 的方式上传输。
SoftSwitchl2 与 MGW13 之间可以釆用媒体网关控制相关的协议进行通 信。例如可以釆用 H.248协议进行通信,还可以使用媒体网关控制协议(Media Gateway Control Protocol, MGCP )协议。
智能外设子*** 10 与 SCP11 之间可以釆用基于信令传递 (Over SIGTRAN )方式的智能网应用协议信。
需要指出的是, 上述智能网应用协议在不同的***的中可以不同, 例如固 定智能网中是智能网应用规程协议 INAP , 在 GSM移动网络中是 CAP协议, 在 CDMA移动网络中是无线智能网( Wireless Intelligent Network, WIN )MAP 协议。 上述协议都可以承载在 SIGTRAN上。
智能外设子*** 10与 MGW13之间的业务(即媒体流, 例如话音信号) 使用基于网际协议的媒体流传输协议通信。 例如, 使用实时传输协议 \实时传 输控制协议 ( Real-time Transport Protocol Real-time Transport Control Protocol, RTP\ RTCP )„
如图 1所述的***中, 可以看到, 传统的智能网设备之间, 是使用 TDM 方式承载的, 例如 El、 T1协议。 而本具体实施方式与传统网络不同, 至少部 分使用 TCP\IP网络来承载, 就是这些信号在 TCP\IP网络上传递。 这种实施方 式使得智能业务网络的维护更加简单方便。
另一具体实施方式中提供一种智能外设子***, 请参考图 2, 为一个智能 外设子*** 10的结构示意图, 该智能外设子***包括:
第一模块 102, 用于接收交换装置发送的基于网际协议的呼叫信息, 解析 上述呼叫信息得到业务控制功能的标识信息和呼叫标识信息。换句话说, 该模 块能够支持呼叫的基于网际协议的呼叫控制协议信令传输, 例如, 通过该第一 模块 102,智能外设子*** 10可以通过 SIP信令或者 H.323协议和 SoftSwitchl2 进行通信。
请求模块 104, 用于根据所述业务控制功能标识信息和呼叫标识信息向业 务控制装置发起协助请求。
提供资源能力模块 100, 用于接收所述业务控制装置返回的资源操作指示 并根据该资源操作指示提供业务资源服务。该模块完成现有的智能外设的基本 功能, 例如放音收号、 录音、 传真、 视频播放等。
参考图 3 , 为在另一实施方式中智能子***的结构示意图, 如图所示, 智 能外设子***还可以包括:
第二模块 103 , 通过基于网际协议的媒体流传输协议通向媒体网关建立媒 体流。也就是说,该第二模块 103能够支持媒体流的媒体流传输协议信令传输, 例如, 通过该基于网际协议的媒体流传输协议应用模块 103 , 智能外设 10能 够通过 RTPVRTCP协议同 MGW13完成媒体流的通信。
参考图 4,为智能外设子***的另一中结构形式,在上述实施例的基础上, 智能外设子***还可以包括:
SIGTRAN应用模块 101 , 设置在请求模块 104、 提供资源能力模块 100 与所述业务控制装置之间, 用于支持基于信令传递 (Signaling Transport , SIGTRAN )方式的智能网应用协议的传输。 例如, 通过该 SIGTRAN应用模 块 101 ,智能外设子*** 10可以以 INAP over SIGTRAN协议同 SCP11进行通 信。
参考图 5, 智能外设子***还可以同时包括上述第二模块 103、 SIGTRAN 应用模块 101 , 各单元的功能在前文已有详细介绍, 在此不赘述。
应当指出的是, 上述 SIGTRAN应用模块 101、 第一模块 102、 第二模块 103 , 可以与请求模块 104和提供资源能力模块 100结合在一起, 构成一个单 独的智能外设装置; 也可以分别是独立于请求模块 104 和提供资源能力模块 100的网关; 也可以任意组合起来构成独立于请求模块 104和提供资源能力模 块 100 (相当于原有的智能外设装置)的网关。 上述独立的网关与请求模块和 于提供资源能力模块 100之间釆用现有的 TDM方式(例如 E1协议、 T1协议) 进行通信。也就是说,这些独立的网关具有将基于 IP的协议和 TDM方式之间 的协议双向转换的功能。
例如, 在一个具体实施方式中, 参考图 6A, 为基于网际协议的智能业务 ***的网络结构示意图, 在这个实施方式中, 智能外设子***包括第一网关 14和智能外设装置 10A。 第一网关 14用于支持与业务控制装置基于信令传递 ( Signaling Transport , SIGTRAN )方式的智能网应用协议的传输。 第一网关 14与智能外设装置 10A之间仍然釆用 TDM方式(例如 El、 T1协议 )进行传 输。 也就是说, 第一网关 14可以实现 TDM方式传输的协议与通过基于信令 传递 SIGTRAN方式的协议之间的双向转化。 例如, 通过第一网关 14, 智能外 设子*** 10可以以 INAP over SIGTRAN协议同 SCP11进行通信。
图 6A所示的智能业务***中的其它装置( SCP11、 SoftSwitchl2、 MGW13 ) 的作用与图 1所示的***中同名装置的作用相类似, 在此不再赘述。
又例如, 在另一个具体实施方式中, 参考图 6B, 为一种基于网际协议的 智能业务***的网络结构示意图。
该至少一个第二网关 15, 用于支持与交换装置之间的呼叫的基于网际协 议的呼叫控制协议信令传输, 和 /或, 支持与媒体网关之间的媒体流的媒体流 传输协议信令传输。 第二网关 15与智能外设装置 10B之间釆用现有的 E1协 议进行通信,也就是说, 第二网关 15可以支持现有的 TDM方式(例如 El、 T1 协议)与基于网际协议的协议(例如呼叫控制协议、 媒体流传输协议)之间的 转化,例如, 第二网关 15用于与智能外设装置进行基于 E1协议的通信, 并将 有关通信转化成基于 SIP的信令传输给 SoftSwitch, 同时, 可以将 SoftSwitch 发送的有关基于 SIP的信令再转化成基于 E1的信令发送给智能外设装置。
智能外设 10B用于提供资源能力,也可以同时支持基于 SIGTRAN方式的 智能网应用协议的传输。 在此不赘述。
图 6B所示的智能业务***中的其它装置( SCP11、 SoftSwitchl2、MGW13 ) 的作用与图 1所示的***中同名装置的作用相类似, 在此不再赘述。
在另一个具体实施方式中, 参考图 6C, 为一种基于网际协议的智能业务 ***的网络结构示意图, 上述实施方式中, 智能业务子***包括第一网关 14、 第二网关 15与智能外设装置 10C。
第一网关 14用于支持基于信令传递(Signaling Transport , SIGTRAN ) 方式的智能网应用协议的传输。 第一网关 14与智能外设装置 10B之间仍然釆 用 TDM方式(例如 El、 T1协议)进行传输。 也就是说, 第一网关 14将原来 的 TDM方式传输的协议转化为通过基于信令传递 SIGTRAN方式的协议传输。
第二网关 15, 用于支持与交换装置之间的呼叫的基于网际协议的呼叫控 制协议信令传输, 和 /或, 支持与媒体网关之间的媒体流的基于网际协议的媒 体流传输协议信令传输。 第二网关 15 与智能外设装置 10B之间釆用现有的 TDM方式(例如 El、 T1协议)进行通信。 也就是说, 第二网关 15可以支持 现有的 TDM方式的协议与基于网际协议的协议(例如呼叫控制协议、 媒体流 传输协议)之间的转化。
智能外设装置 10C用于提供资源能力。 与现有的智能外装置相同, 在此 不赘述。
图 6C所示的智能业务***中的其它装置( SCP11、 SoftSwitchl2、MGW13 ) 的作用与图 1所示的***中类似, 在此不再赘述。
相应的, 本发明具体实施方式还提供应用在上述提供智能业务***中的 一种网关, 例如上述第一网关 14、 第二网关 15。 该网关与智能外设通过时分 复用方式的协议通信, 包括:
下列模块之一或者任意组合:
SIGTRAN应用模块, 用于支持基于信令传递 SIGTRAN方式的智能网应 用协议与所述时分复用方式的协议的相互转化。 即将接收到的基于信令传递 SIGTRAN 方式的智能网应用协议转化为所述时分复用方式的协议后发送出 去, 和 /或, 将接收到的所述时分复用方式的协议转化为基于信令传递 SIGTRAN方式的智能网应用协议后发送出去。 具体的, 上述智能网应用协议 在不同的***的中可以不同,例如固定智能网中是智能网应用规程协议 INAP, 在 GSM移动网络中是 CAMEL应用部分( CAMEL Application Part , CAP ) 协议,在 CDMA移动网络中是移动应用部分( Mobile Application Part , MAP ) 协议。 上述协议都可以承载在以基于信令传递 ( Signaling Transport , SIGTRAN ) 的方式上传输。
第一转化模块,用于支持呼叫的基于网际协议的呼叫控制协议与所述时分 复用方式的协议的相互转化。 即: 将接收到的基于网际协议的呼叫控制协议转 化为所述时分复用方式的协议后发送出去, 和 /或, 将接收到的时分复用方式 的协议转化为基于网际协议的呼叫控制协议后发送出去。 具体的, 该基于网际 协议的呼叫控制协议可以是任意一种在智能外设子*** 10和 SoftSwitchl2之 间的基于网际协议的起呼叫控制作用的协议, 包括但不限于会话初始协议 ( Session Initiation Protocol , SIP ), Η.323协议等。
第二转化模块,用于支持媒体流的基于网际协议的媒体流传输协议与所述 时分复用方式的协议的相互转化。 即: 将接收到的基于网际协议的媒体流传输 协议转化为所述时分复用方式的协议后发送出去, 和 /或, 将接收到的所述时 分复用方式的协议转化为基于网际协议的媒体流传输协议后发送出去。 具体 的, 该基于网际协议的媒体流传输协议例如 H.248协议, 或者媒体网关控制协 议 ( Media Gateway Control Protocol, MGCP )„
上述应用在上述提供智能业务***中的一种网关, 与智能外设配合使用, 使得智能外设可以釆用网际协议 IP承载,简化了整个通信网络的管理和维护。
上述各种实施方式仅仅是举例, 而不是对于发明的方案的限制, 本领域内 的技术人员可以进行等同的替换和修改, 而不脱离本发明的实质。 例如, 可以 设置不同数量的独立于智能外设的网关,以及与不同数量的该智能外设的内部 模块, 来配合支持上述不同协议的信令传输。 又例如, 对于不同的通信***, 釆用不同的具体的智能网通信协议, 这些等同替换都不脱离本发明的实质。
需要指出的是, 上述基于网际协议的呼叫信息(承载在基于网际协议的呼 叫控制协议上)携带业务控制功能标识( Service Control Function Identification, SCF ID )和相关标识( CORRELATION ID )信息。 其中 SCF ID用来标识一个 SCF进程, CORRELATION ID用来标识一个呼叫实例。
上述提供智能业务的***、 智能外设子***(装置), 以及与之配合使用 的网关, 具有以下有益效果: 由于在传统 PSTN网络中, 业务交换点( Service Switching Point , SSP )在向智能外设子*** 10发起呼叫时需要携带 SCF ID 及 CORRELATION ID信息, 而上述各实施方式中, 所述基于网际协议的协议 信令携带 SCF ID和 CORRELATION ID信息。 这样, 上述各实施方式在提供 智能业务过程中, 一方面可以釆用网际协议 IP承载, 简化了整个通信网络的 管理和维护, 另一方面又满足传统的 PSTN网络中的交换装置(例如 SSP )与 智能外设装置间的逻辑关系, 从而使得传统 PSTN上的业务得以在 IP承载网 上保留实现, 不会影响用户对于业务的体验。
本发明的另一个实施方式中,还提供了上述智能业务***在运行时,提供 智能业务的方法。 参考图 7 , 为该方法的流程图, 其方法流程如下:
在提供智能业务之前, 当有智能业务请求时, SoftSwitchl2分析触发智能 业务, 并将该智能业务触发到 SCP11 ; SCP11 解析该智能业务后, 指示 SoftSwitchl2向智能外设子***建立临时连接。
应指出的是, 此处的智能外设子***即指前述***中的智能外设子***, 有不同的情形, 在此将不赘述。
步骤 701、 智能外设子***接收呼叫, 该呼叫是由 SoftSwitchl2通过基于 网际协议的呼叫控制协议发起的,且在该基于网际协议的呼叫控制协议信令中 携带 SCF ID和 CORRELATION ID信息。
该基于网际协议的协议包括但不限于: SIP协议、 H.323协议。
需要指出的是, 以 SIP协议为例, 有不同的在 SIP信令中携带 SCF ID和 CORRELATION ID信息的方式。
在有的实施方式中,该当智能外子***设由一个或多个单独的网关和智能 外这装置组成时,一个或多个单独的网关实现时分复用方式承载的呼叫控制协 议与所述基于网际协议的呼叫控制协议的相互转化;和 /或, 实现时分复用方式 承载的媒体流传输协议与所述基于网际协议的媒体流传输协议的相互转化。
步骤 702、 智能外设子***解析接收到的信息, 得到 SCF ID 和 CORRELATION ID信息后,通过 SIGTRAN方式传输的智能网应用协议向 SCP 发起协助请求。 该智能网应用协议例如,固定智能网中的 INAP协议,在 GSM 移动网络中的 CAP协议, 在 CDMA移动网络中的 WIN MAP协议。
步骤 703、 智能外设子***接收资源操作指示并根据该资源操作指示提供 媒体资源服务, 该资源操作指示是 SCP根据业务需求并通过基于 SIGTRAN 方式传输的智能网应用协议发出的。例如, 固定智能网中 INAP协议,在 GSM 移动网络中的 CAP协议, 在 CDMA移动网络中的 WIN MAP协议。 智能外设 还可以通过 SIGTRAN传输方式向 SCP11上报智能外设的操作执行结果。这个 过程在实际的通信过程中可以反复多次。
上述媒体资源服务包括:
步骤 704、智能外设子***通过基于网际协议的媒体流协议向 MGW建立 媒体流。 该媒体流协议例如 RTPVRTCP协议。
该方法还可以包括, SoftSwitchl2检测到用户事件后向 SCP11上报该事件, 并根据 SCP11的指示进行后续操作。 例如, SoftSwitchl2检测到用户挂机后, 向 SCP11上报该挂机事件,并根据 SCP11的指示释放前述到智能外设 10的呼 叫。
需要指出的是, 上述方法中, 所述基于网际协议的协议信令携带业务控制 功能标识信息 SCF ID和呼叫标识信息 CORRELATION ID信息。 其中 SCF ID 用来标识一个业务控制功能 SCF进程, CORRELATION ID用来标识一个呼叫 实例。
上述提供智能业务的方法,在智能外设对外釆用基于网际协议 IP的信令, 例如和交换装置、 业务控制装置、媒体网关之间的通信, 这样使得在提供智能 业务过程中, 与核心网部分釆用一致的协议(网际协议 IP ), 减少了信令并简 化了网络的管理和维护; 并且还能保留原有传统网络中的智能业务, 不会对现 有智能业务造成影响。
下面以该基于网际协议的协议为 SIP协议、该通过 SIGTRAN方式传输的 智能网应用协议为 INAP over SIGTRAN、 该媒体流协议为 RTP/RCTP协议的 情况为一个具体的例子,根据所述 SIP信令携带 SCF ID和 CORRELATION ID 信息的不同的方式介绍不同的提供智能业务的流程。
在一种提供智能业务的方法中, 由 INVITE 消息携带 SCF ID 和 CORRELATION ID信息。 参考图 8, 为该由 INVITE 消息携带 SCF ID 和 CORRELATION ID信息的提供智能业务的方法的具体的信令流程图。 包括以 下步骤:
801、 Softswitch向 SCP发送 Initial DP消息。
802、 SCP向 SoftSwitch发送 Request Report BCSM Event消息。
803、 SCP向 SoftSwitch发送 Establish Temporary Connection消息。 上述 801 ~ 803 即: SoftSwitch分析触发智能业务, 并将该智能业务触发 到 SCP; SCP解析该智能业务后, 指示 SoftSwitch向智能外设建立临时连接。
804、 SoftSwitch向智能外设发送 INVITE消息, 该 INVITE消息中携 带有 SCF ID和 CORRELATION ID信息。
805、 智能外设向 SoftSwitch发送 180 Alerting消息。
上述 804 ~ 805即智能外设接收呼叫, 该呼叫是由 SoftSwitch通过基于网 际协议的呼叫控制协议发起的, 且在 INVITE 消息中携带 SCF ID 和 CORRELATION ID信息。
806、 智能外设向 SCP发送 Assist Request Instructions消息。 上述 806即智能外设解析接收到的信息,得到 SCF ID和 CORRELATION ID信息后,通过 SIGTRAN方式传输的智能网应用协议向 SCP发起协助请求。
807、 SCP向智能外设发送 Play Announcement消息。
808、 智能外设向 SoftSwitch发送 200 ok消息。
809、 SoftSwitch向智能外设返回 Ack消息。
810、 智能外设向 SCP发送 Special Resource Report消息。 811、 SCP向智能外设发送 Prompt And Collect User Information消 息。
812、智能外设向 SCP发送 PCR消息。(即发送 Prompt And Collect User Information Respond响应消息 )
上述 807 ~ 812即智能外设接收资源操作指示并根据该资源操作指示提供 媒体资源服务, 该资源操作指示是 SCP根据业务需求并通过基于 SIGTRAN 方式传输的智能网应用协议发出的。
该方法还可以包括:
813、 Softswitch向 SCP发送 EventReportBCSM消息。
814、 SCP向 SoftSwitch返回 DisconnectForwardConnection消息。
815、 SoftSwitch向智能外设发送 BYE消息。
816、 智能外设向 SoftSwitch返回 200 ok消息。
817、 SCP向 SoftSwitch发送 Release Call消息。
上述 813 - 817即 SoftSwitch检测到用户挂机后,向 SCP上报该挂机事件, 并根据 SCP的指示释放前述到智能外设的呼叫。
通过上述信令交互, 智能外设在接收到 INVITE消息后, 可以从该 INVITE 消息中解析出需要的 SCF ID和 CORRELATION ID信息,在此基础上完成了智 能业务的提供以及结束。
图 8所述信令交互过程中, SoftSwitch和 SCP之间是基于 SIGTRAN方式传输 的协议(即信令) , 智能外设与 SoftSwitch之间为 SIP协议(即信令) , 智能外 设与 SCP之间是基于 SIGTRAN方式传输的协议(即信令) 。
上述 INVTE消息携带 SCF ID和 CORRELATION ID信息可以有不同的方 法:
一种具体的 INVTE消息携带 SCF ID和 CORRELATION ID信息方式是: INVITE消息中被叫号码携带 SCF ID和 CORRELATION ID信息。 具体为:
INVITE消息中的被叫号码可以首先放置智能外设的路由号码,本实施方式中, 在智能外设路的路由号码后面附加 SCF ID和 CORRELATION ID信息。 放置上 述信息的顺序、 位数可以通过配置决定, 也可以通过特定的结束字符组合(如 E0 ) 决定。 另一种具体的 INVTE消息携带 SCF ID和 CORRELATION ID信息方式是: INVITE消息中的 SIP消息头域中携带 SCF ID和 CORRELATION ID信息。 具体 为: 扩充 SIP消息的头域的定义, 用于携带 SCF ID和 CORRELATION ID信息, 在 SoftSwitchl2向智能外设发起的 INVITE消息中携带。 一个具体的例子为: INVITE sip: ... ...
Via:……
Max-Forwards:
To: ... ...
From:
Call-ID:……
SCF ID: 1234
CORRELATION ID: 456789
CSeq: ... ...
Subject:
Contact:
Content-Type:
Content-Length:
还有一种具体的 INVTE消息携带 SCF ID和 CORRELATION ID信息方式 是: INVITE消息中 SIP消息体携带 SCF ID和 CORRELATION ID信息。 具体为: 定义一种 SIP信令消息体的 Content-Type并定义消息体内容, 在 SoftSwitch 向智能外设发起的 INVITE消息的消息体中携带。 例如, Content-Type:
application\pstnin, JLSCF ID = XXXXXXXXX, CORRELATION ID =
XXXXXXXo
上述在 INVTE消息携带 SCF ID和 CORRELATION ID信息的方式, 一方面 使得智能外设可以釆用基于 IP的协议提供原来传统网络中的业务, 另一方面, 不需要增加多余的信令, 不需要增加提供智能业务的步骤,从而优化了提供智 能业务的流程, 减少通信网络的负担。
除 INVTE消息携带 SCF ID和 CORRELATION ID信息的方式以外, 另外一 种携带方法是: 由单独的 INFO消息携带 SCF ID和 CORRELATION ID信息。 参 考图 9, 为由 INFO消息携带 SCF ID和 CORRELATION ID信息的提供智能业务 的方法的具体的信令流程图。 包括以下步骤:
901、 SoftSwitch向 SCP发送 Initial DP消息。
902、 SCP向 SoftSwitch发送 Request Report BCSM Event消息。
903、 SCP向 SoftSwitch发送 Establish Temporary Connection消息。
上述 901 ~ 903 即: SoftSwitch分析触发智能业务, 并将该智能业务触发 到 SCP; SCP解析该智能业务后, 指示 SoftSwitch向智能外设建立临时连接。
904、 SoftSwitch向智能外设发送 INVITE消息。 本具体实施方式和前一 具体实施方式不同, 该 INVITE消息中没有携带 SCF ID和 CORRELATION ID信息。
905、 智能外设向 SoftSwitch发送 180 Alerting消息。
906、 SoftSwitch向智能外设发送 INFO消息,该 INFO消息中携带有 SCF ID和 CORRELATION ID信息。
907、 智能外设向 SoftSwitch发送 200 For INFO消息。
上述 904 ~ 907即智能外设接收呼叫, 该呼叫是由 SoftSwitch通过基于网 际协议的呼叫控制协议发起的, 且在 INFO 消息中携带 SCF ID 和 CORRELATION ID信息。
908、 智能外设向 SCP发送 Assist Request Instructions消息。
上述 908即智能外设解析接收到的信息,得到 SCF ID和 CORRELATION ID信息后,通过 SIGTRAN方式传输的智能网应用协议向 SCP发起协助请求。
909、 SCP向智能外设发送 Play Announcement消息。
910、 智能外设向 SoftSwitch发送 200 ok消息。
911、 SoftSwitch向智能外设返回 Ack消息。
912、 智能外设向 SCP发送 Special Resource Report消息。
913、 SCP向智能外设发送 Prompt And Collect User Information消息。
914、 智能外设向 SCP发送 PCR消息。 (即发送 Prompt And Collect User Information Respond响应消息 )
上述 909 ~ 914即智能外设接收资源操作指示并根据该资源操作指示提供 媒体资源服务, 该资源操作指示是 SCP根据业务需求并通过基于 SIGTRAN 方式传输的智能网应用协议发出的。
图 9所述信令交互过程中, Softswitch和 SCP之间是基于 SIGTRAN方式传输 的协议(即信令) , 智能外设与 Softswitch之间为 SIP协议(即信令) , 智能外 设与 SCP之间是基于 SIGTRAN方式传输的协议(即信令) 。
在 INFO消息中携带 SCF ID和 CORRELATION ID信息的具体方式也有几种 不同的情况。 一种是 INFO消息中在扩充定义的头域中携带。 这种情况类似釆 用在 INVITE消息的头域中携带, 在此不赘述。 另一种是 INFO消息中的消息体 中携带。 这种情况类似釆用 INVITE消息体携带, 在此不赘述。
通过上述信令交互, 智能外设在接收到 INFO消息后, 可以从该 INFO消息 中(例如头域中或者消息体中)解析出需要的 SCF ID和 CORRELATION ID信息, 在此基础上完成了智能业务的提供以及结束。
需要指出的是, 当所述基于网际协议的协议是 H.323协议时, 所述 H.323 信令也携带 SCF ID和 CORRELATION ID信息。其具体的携带的方法与 SIP信令 中类似, 在此将不赘述。
各实施方式中携带 SCF ID和 CORRELATION ID信息的有益效果在于, 因 为在传统 PSTN网络中, SSP在向智能外设发起呼叫时需要携带 SCF ID及 CORRELATION ID , 所述 SIP信令携带 SCF ID和 CORRELATION ID信息 , 可 以使 SoftSwitchl2与智能外设之间维持传统 PSTN网络中 SSP与智能外设间的逻 辑关系。 从而, 减少网络向 IP化发展时的建设的复杂度。
上述智能业务***以及方法、 智能外设、 网关, 将传统智能业务承载在 IP 网络上,可以在 NGN核心网中保留原有 SCP及相应的业务,节省运营商投资, 保持最终用户业务体验不变; 从而简化网络的管理和维护。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到本发明 可借助软件加通用硬件平台的方式来实现, 当然也可以通过硬件,但很多情况 下前者是更佳的实施方式。基于这样的理解, 本发明的技术方案本质上或者说 对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产 品存储在一个存储介质中, 包括若干指令用以使得一台计算机设备 (可以是个 人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述的方法。
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。

Claims

权 利 要 求
1、 一种提供智能业务的方法, 其特征在于, 包括:
接收交换装置发送的基于网际协议的呼叫信息, 该呼叫信息中包含业务控 制功能标识信息和呼叫标识信息;
根据解析所述呼叫信息得到的所述业务控制功能的标识信息和所述呼叫 标识信息, 向业务控制装置发起协助请求;
接收所述业务控制装置返回的资源操作指示, 并根据所述资源操作指示提 供业务资源服务。
2、 根据权利要求 1的提供智能业务的方法, 其特征在于, 所述提供业 务资源服务包括:通过基于网际协议的媒体流传输协议通向媒体网关建立媒体 流。
3、 根据权利要求 1的提供智能业务的方法, 其特征在于, 所述向业务 控制装置发起协助请求或接收所述业务控制装置返回的资源操作指示,是基于 信令传递 SIGTRAN方式传输的智能网应用协议进行的。
4、 根据权利要求 1权利要求的提供智能业务的方法, 其特征在于, 进 一步包括:
将所述基于网际协议的呼叫信息转化为时分复用方式承载的呼叫信息。
5、 根据权利要求 1所述的提供智能业务的方法, 其特征在于, 当所述基于网际协议的呼叫信息具体为基于会话初始协议 SIP 的呼叫信 息, 所述包含所述业务控制功能标识信息和呼叫标识信息具体包括:
在 INVITE消息中的被叫号码中、 消息头域中、 或者消息体中携带所述业 务控制功能标识信息和所述呼叫标识信息; 或者,
在 INFO消息中的消息头域中或者消息体中携带所述业务控制功能标识信 息和所述呼叫标识信息。
6、 一种提供智能业务的***, 其特征在于, 该***包括智能外设子系 统、 交换装置和业务控制装置, 其中:
智能外设子***, 用于: 接收所述交换装置发送的基于网际协议的呼叫信息, 根据解析所述呼叫信息得到的业务控制功能标识信息和所述呼叫标识信息向 所述业务控制装置发起协助请求,并根据所述业务控制装置返回的资源操作指 示提供业务资源服务;
所述交换装置, 用于与所述智能外设子***通信, 实现业务触发功能; 所述业务控制装置, 用于与所述智能外设子***通信, 实现业务控制功能。
7、 根据权利要求 6所述的智能业务***, 其特征在于, 该***还包括: 用于实现承载交换的媒体网关,
所述智能外设子***与所述媒体网关使用基于网际协议的媒体流传输协 议通信。
8、 根据权利要求 6所述的智能业务***, 其特征在于, 所述智能外设 子***与所述业务控制装置之间釆用基于信令传递 SIGTRAN 方式的智能网 应用协议通信。
9、 一种智能外设子***, 其特征在于, 包括:
第一模块, 用于接收交换装置发送的基于网际协议的呼叫信息, 解析上述 呼叫信息得到业务控制功能的标识信息和呼叫标识信息;
请求模块,用于根据所述业务控制功能标识信息和呼叫标识信息向业务控 制装置发起协助请求;
提供资源能力模块,用于接收所述业务控制装置返回的资源操作指示并根 据该资源操作指示提供业务资源服务。
10、 根据权利要求 10的智能外设子***, 其特征在于, 该智能外设*** 还包括
第二模块,用于通过基于网际协议的媒体流传输协议通向媒体网关建立媒 体流。
11、 根据权利要求 10的智能外设子***, 其特征在于,
还包括 SIGTRAN应用模块,用于支持所述请求模块与所述业务控制装置 之间、 所述提供资源能力模块与所述业务控制装置之间釆用基于信令传递 SIGTRAN方式传输的智能网应用协议。
12、 根据权利要求 11或 12的智能外设子***, 其特征在于,
所述 SIGTRAN应用模块、 所述第一模块、 所述第二模块之一或者任意组 合, 与所述请求模块和所述提供资源能力模块通过时分复用方式的协议通信, 并结合在同一实体中。
13、 根据权利要求 11或 12的智能外设子***, 其特征在于, 所述 SIGTRAN应用模块、 所述第一模块、 所述第二模块之一或者任意组 合,构成一个或一个以上网关, 上述网关与所述请求模块和所述提供资源能力 模块通过时分复用方式的协议通信。
14、 一种网关, 其特征在于, 该网关与智能外设通过时分复用方式的协 议通信, 包括:
下列模块之一或者任意组合:
SIGTRAN应用模块, 用于将接收到的基于信令传递 SIGTRAN方式的智 能网应用协议转化为所述时分复用方式的协议后发送出去, 和 /或, 将接收到 的所述时分复用方式的协议转化为基于信令传递 SIGTRAN方式的智能网应用 协议后发送出去;
第一转化模块,用于将接收到的基于网际协议的呼叫控制协议转化为所述 时分复用方式的协议后发送出去, 和 /或, 将接收到的时分复用方式的协议转 化为基于网际协议的呼叫控制协议后发送出去;
第二转化模块,用于将接收到的基于网际协议的媒体流传输协议转化为所 述时分复用方式的协议后发送出去, 和 /或, 将接收到的所述时分复用方式的 协议转化为基于网际协议的媒体流传输协议后发送出去。
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