WO2008037188A1 - Procédé et système de réalisation d'un service de messages courts au moyen d'un terminal ngn - Google Patents

Procédé et système de réalisation d'un service de messages courts au moyen d'un terminal ngn Download PDF

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Publication number
WO2008037188A1
WO2008037188A1 PCT/CN2007/070148 CN2007070148W WO2008037188A1 WO 2008037188 A1 WO2008037188 A1 WO 2008037188A1 CN 2007070148 W CN2007070148 W CN 2007070148W WO 2008037188 A1 WO2008037188 A1 WO 2008037188A1
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WIPO (PCT)
Prior art keywords
short message
ngn
terminal
softswitch
request
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PCT/CN2007/070148
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English (en)
French (fr)
Inventor
Hongjin Yuan
Yueming Hu
Xu Wang
Haihua Hu
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to AT07721767T priority Critical patent/ATE497332T1/de
Priority to DE602007012277T priority patent/DE602007012277D1/de
Priority to EP07721767A priority patent/EP2071857B1/en
Publication of WO2008037188A1 publication Critical patent/WO2008037188A1/zh
Priority to US12/412,816 priority patent/US20090186643A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12Messaging; Mailboxes; Announcements
    • H04W4/14Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08Upper layer protocols
    • H04W80/10Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18Service support devices; Network management devices
    • H04W88/184Messaging devices, e.g. message centre

Definitions

  • the present invention relates to a Next Generation Network (NGN) technology, and more particularly to a method, system and NGN short message center for implementing short message service by an NGN terminal.
  • NGN Next Generation Network
  • NGN is a new generation network that combines circuit switched networks such as Public Switched Telephone Network (PSTN), Public Land Mobile Network (PLMN), and packet-switched IP networks. In NGN, it can carry out integrated services such as voice, video, and data.
  • PSTN Public Switched Telephone Network
  • PLMN Public Land Mobile Network
  • IP networks packet-switched IP networks
  • NGN adopts a unified IP/MPLS bearer network with quality of service (QoS) capability to support various services.
  • the core component of NGN is a softswitch with packet switching control capability, and the call control protocol of NGN is the initial protocol (SIP).
  • SIP initial protocol
  • the NGN accesses the traditional circuit-switched network through the signaling gateway and the relay gateway, thereby implementing interworking with the circuit-switched network.
  • FIG. 1 is a schematic diagram of a system structure of an existing NGN terminal for implementing a short message service.
  • the NGN terminal directly communicates with a value-added service platform through a private protocol, and the value-added service platform adopts The standard Short Message Protocol (SMPP) is connected to the short message system.
  • SMPP Short Message Protocol
  • the registration and deregistration messages need to be redefined between the NGN terminal and the value-added service platform, and both parties need to maintain a heartbeat message to detect whether the NGN terminal is online.
  • the value-added service platform serves as an access part for contacting the NGN terminal and the short message system. A conversion between a proprietary protocol and a standard short message protocol is required.
  • the method for the NGN terminal to send the short message The NGN terminal establishes an IP link with the value-added service platform, and uses the established IP link to send the short message to the value-added service platform through the private protocol, and the value-added service platform receives the short message.
  • the message is decoded, and then encoded into a standard short message protocol data packet and then forwarded to the short message system to implement the NGN terminal to send the short message.
  • the short message system sends the short message to the value-added service platform through the standard short message protocol data packet, and the value-added service platform converts the received short message into a data packet of the private protocol format, and utilizes The established IP link between the NGN terminal and the value-added service platform is forwarded to the NGN terminal, so that the NGN terminal receives the short message.
  • the value-added service platform After the NGN terminal is online, the value-added service platform sends the offline short message of the NGN terminal to the NGN terminal by receiving the short message by the NGN terminal.
  • the NGN terminal needs to send a registration message when logging in, and needs to send a logout message to the value-added service platform when logging out, and the heartbeat message needs to be maintained between the NGN terminal and the value-added service platform, the consumption of the value-added service platform is increased.
  • the NGN terminal sends a heartbeat message to the value-added service platform.
  • the value-added service platform decodes and processes the private message packet in the heartbeat message, and then encodes the message packet encoded into the private protocol as a heartbeat confirmation message to the NGN terminal, additionally
  • the CPU performance of the value-added service platform is consumed, which greatly increases the system performance overhead.
  • the value-added service platform needs to process about 166 heartbeat messages per second on average, and the 10,000 data of the user needs to be saved in the memory of the platform.
  • the protocol there is already a SIP protocol link between the NGN terminal and the softswitch, and there are registration, logout and heartbeat messages between the two parties.
  • the existing method requires the NGN terminal to additionally add an IP chain to the value-added service platform.
  • NGN terminal connection although there are many solutions for network security, it increases the risk of attack on value-added service platforms, which increases the risk of system security.
  • network security security devices which increase the investment in the system.
  • the IP address of the value-added service platform must be configured first on the NGN terminal. If the IP address of the value-added service platform changes, the configuration of all NGN terminals needs to be changed, and the workload is maintained. Very large, reducing the maintainability of the system.
  • the existing solution is only applicable to a network with an IP link established between the NGN terminal and the value-added service platform.
  • the existing solution has disadvantages in terms of technical performance and security indicators, especially increasing the complexity of the system and weakening the scalability of the system.
  • the embodiments of the present invention provide a method for implementing a short message service by an NGN terminal, which can be applied to all NGN terminals, and enhances the scalability of the system.
  • Another embodiment of the present invention provides a system for implementing a short message service by an NGN terminal, which can be applied to all NGN terminals, and enhances the scalability of the system.
  • Yet another embodiment of the present invention provides an NGN short message center, which can be applied to all NGN terminal, enhanced system scalability.
  • a method for implementing a short message service by a next-generation network NGN terminal comprising: the softswitch forwarding a short message request from the NGN terminal to the NGN short message center; and the NGN short message center sending the short message according to the received short message request Message to the NGN terminal.
  • a system for implementing a short message service by a NGN terminal comprising: an NGN terminal, a softswitch, and an NGN short message center;
  • the softswitch is used to transparently transmit information between the NGN terminal and the NGN short message center;
  • the NGN short message center is configured to receive the short message request of the NGN terminal, and request the short message according to the received short message request Send to the NGN terminal;
  • the NGN terminal interacts with the softswitch through an existing SIP protocol link.
  • the NGN short message center includes: sending a short message unit, and/or receiving a short message unit, and/or acquiring an offline short message unit, where
  • the sending short message unit is configured to receive a short message request from the NGN terminal forwarded by the softswitch, and send the short message to the NGN terminal;
  • the receiving short message unit is configured to forward the short message request to the NGN terminal by using the softswitch, so that the NGN terminal receives the short message;
  • the acquiring an offline short message unit is configured to receive an offline short message request from the NGN terminal that is forwarded by the softswitch, and carry the short message of the NGN terminal stored in the SIP protocol-based message, and forward the message to the SIP-based message. NGN terminal.
  • the NGN short message center and the extended SIP message are implemented in the embodiment of the present invention to implement all NGN terminal short message services.
  • the NGN terminal utilizes the existing SIP protocol link with the softswitch to transparently transmit the SIP message exchanged between the NGN terminal and the NGN short message center, thereby realizing the ability of the NGN terminal to send and receive short messages. Strong system maintainability.
  • the NGN terminal exchanges information with the NGN short message center through the transparent transmission of the softswitch.
  • the NGN terminal does not need to establish a private protocol link with the value added service platform, and only needs to be maintained.
  • the existing SIP protocol link with the softswitch increases the scalability and flexibility of the system.
  • XML Extensible Markup Language
  • the NGN short message center the NGN is short.
  • the message center can maintain the link between the softswitch and the softswitch.
  • FIG. 1 is a schematic structural diagram of a system for implementing a short message service by an existing NGN terminal
  • FIG. 2 is a schematic structural diagram of a system embodiment for implementing a short message service by an NGN terminal according to the present invention
  • FIG. 3 is a flowchart of an embodiment of an NGN terminal implementing a short message service according to the present invention
  • FIG. 4 is a flowchart of an embodiment of an NGN terminal transmitting a short message according to the present invention
  • FIG. 5 is a flowchart of an embodiment of an NGN terminal receiving a short message according to the present invention.
  • FIG. 6 is a flow chart of an embodiment of an NGN terminal of the present invention for acquiring an offline short message. Mode for carrying out the invention
  • the softswitch forwards the short message request to the NGN short message center, and the NGN short message center sends the short message according to the received short message request.
  • FIG. 2 is a schematic structural diagram of an embodiment of a system for implementing a short message service by an NGN terminal according to the present invention. As shown in FIG. 2, the system includes at least: an NGN terminal, a softswitch, and an NGN short message center.
  • the softswitch is used to transparently transmit short message related information between the NGN terminal and the NGN short message center.
  • the service function of the NGN short message center is the same as that of the traditional short message center.
  • the terminal access protocol of the NGN short message center is the SIP protocol. Therefore, as long as the protocol conversion module is added to the traditional short message center, The SIP protocol can be converted between the NGN short message center and the own protocol.
  • the protocol conversion is not required, and the short message can be transmitted by interacting with the terminal.
  • a protocol conversion module is set in the NGN short message center as an example.
  • the NGN short message center may include a short message unit, and/or a short message unit, and/or an offline short message unit, where the short message unit is configured to receive the short message from the NGN terminal forwarded by the softswitch.
  • Requesting converting the received SIP-based short message request to a request based on the own protocol, and sending the short message; the receiving short message unit, configured to convert the received short message request into a SIP protocol message, after being soft
  • the switching is forwarded to the NGN terminal, and the NGN terminal receives the short message.
  • the acquiring the offline short message unit is configured to receive the offline short message request from the NGN terminal that is forwarded by the softswitch, and carry the short message of the NGN terminal stored by the NGN terminal. In the SIP-based message, it is forwarded to the NGN terminal via the softswitch.
  • the link between the NGN terminal and the softswitch is a protocol-defined SIP-based link, which mainly implements registration, logout, heartbeat, and call signaling messages, but cannot carry short message content according to the protocol. Therefore, the present invention Existing SIP protocol messages are extended to carry short The message service, the specific implementation is detailed in the following specific embodiments.
  • FIG. 3 is a flow chart of an embodiment of an NGN terminal implementing short message service according to the present invention.
  • the method of the present invention includes the following steps:
  • Step 300 The softswitch forwards the short message request to the NGN short message center.
  • the short message request may be a SIP message that can carry the Body domain information in the SIP protocol, for example, a SIP information (INFO) message and a SIP message (MESSAGE) message outside the session, and the short message request carries the NGN short message center. Access code.
  • SIP information INFO
  • MESSAGE SIP message
  • the softswitch of each manufacturer needs to transparently transmit SIP messages such as SIP INFO messages or SIP MESSAGE messages outside the session, that is, the soft switch can recognize the present.
  • SIP messages such as SIP INFO messages or SIP MESSAGE messages outside the session, that is, the soft switch can recognize the present.
  • the NGN terminal sends and receives short message requests and responses using SIP messages such as out-of-session SIP INFO messages or SIP MESSAGE messages, transparent transmission by softswitch, and corresponding information is carried by the message body in XML format.
  • SIP messages such as out-of-session SIP INFO messages or SIP MESSAGE messages, transparent transmission by softswitch, and corresponding information is carried by the message body in XML format.
  • SIP messages such as out-of-session SIP INFO messages or SIP MESSAGE messages
  • transparent transmission by softswitch transparent transmission by softswitch
  • corresponding information is carried by the message body in XML format.
  • the NGN terminal request and response events are as follows. 1 shows:
  • the NGN terminal Before the method, the NGN terminal must be registered on the softswitch. For the registration method, refer to the relevant protocol, and no further details are provided here. It should be noted that, if the NGN terminal is not registered on the softswitch, the softswitch rejects the short message request initiated by the NGN terminal, and further, the softswitch determines the sending according to the sender information carried in the short message request. Whether the short message request comes from an IP address that has been registered in the softswitch, and if not, refuses The short message request initiated by the NGN terminal.
  • the NGN terminal Since the NGN terminal directly sends a short message request through the softswitch, the NGN terminal only needs to configure the IP address of the softswitch without knowing the IP address of the NGN short message center.
  • the access code of the NGN short message center is carried in the Request URI field of the SIP message. After receiving the short message request, the softswitch will be short according to the access code of the NGN short message center carried in the Request URI. The message request is forwarded to the NGN short message center.
  • Step 301 The NGN short message center is configured to send a short message according to the received short message request, and a protocol conversion module is configured in the NGN short message center, for converting the SIP message from the soft switch into a protocol message supported by itself. And send a short message according to the received short message request.
  • the short message may also be carried by a SIP message such as a SIP INFO message or a SIP MESSAGE message, and the NGN short message center sends the short message to the soft switch, and the soft exchange is based on the Request URI of the SIP message.
  • the number in the middle is the called number, and the received SIP message is transparently transmitted to the NGN terminal corresponding to the IP address registered by the called number. It can be seen from this that the NGN short message center does not need to know the registered address of the NGN terminal.
  • the softswitch can return a similar 404 error code to the NGN short message center.
  • the softswitch transparent transmission means that the softswitch exchanges the common SIP element in the received SIP message without change.
  • the common SIP element includes: a From header field carrying the sender information, carrying the receiver information. To header field, the Content Type field that identifies the context type, the Content Length field, the Status Code Status Code, the Body field that carries the short message, and so on.
  • the softswitch will SIP messages are discarded.
  • the NGN short message center can also be sent to the ordinary terminal by using the standard short message protocol.
  • the method for sending a short message, receiving a short message, and acquiring an offline short message by the NGN terminal of the present invention will be described in detail below with reference to the embodiments.
  • Step 400 The NGN terminal sends a softswitch to The NGN short message center initiates a short message request.
  • the destination number of the short message can be selected through a common tool such as a buddy list or an address book, or a short message can be sent from the menu or the toolbar.
  • a common tool such as a buddy list or an address book
  • a short message can be sent from the menu or the toolbar.
  • Sending a short message request such as a SIP INFO message
  • a SIP element which is well known to those skilled in the art, and will not be described in detail here.
  • the To header field carries the access of the NGN short message center. code.
  • the short message request must also carry the send short message event parameters, as shown in Table 2:
  • Short message identifier Character string Required Short message identifier sent by the terminal (only ( msgid ) ( String ) is guaranteed by the terminal)
  • Receipt option ( isretum ) Integer ( int ) Required Whether the sending terminal needs to receive a short message receipt, such as 0 means no receipt is required; 1 means need to return receipt
  • the command code corresponding to the short message request event is 3001 in Table 1. It is assumed that in the present embodiment, the NGN terminal that sends the short message needs to receive the short message return.
  • Step 401 The NGN short message center returns a short message response, such as SIP 200 OK, to the NGN terminal via the softswitch, and returns the processing result to the NGN terminal.
  • a short message response such as SIP 200 OK
  • the SIP 200 OK message must also carry the short message response event parameter, as shown in Table 3:
  • Step 402 The NGN short message center returns a short message forwarding response, such as a SIP INFO message, to the NGN terminal via the softswitch, and returns the short message forwarding result to the NGN terminal.
  • a short message forwarding response such as a SIP INFO message
  • the SIP INFO message In addition to carrying the normal SIP element, the SIP INFO message must also carry the short message forwarding response event parameter to return the short message forwarding result event parameter to the terminal, as shown in Table 4.
  • Parameter Type Required / Optional Description In addition to carrying the normal SIP element, the SIP INFO message must also carry the short message forwarding response event parameter to return the short message forwarding result event parameter to the terminal, as shown in Table 4.
  • the terminal sends the short message identifier.
  • Res int The short message forwarding result that must be returned, such as 1 indicates that the short message is forwarded successfully; -1 indicates that the system is abnormal; -78 indicates that the short message forwarding failed; -79 indicates the short message expired, etc.
  • Step 403 After receiving the short message forwarding response, the NGN terminal usually sends a softswitch to the softswitch.
  • the NGN short message center returns a response indicating that the message that the short message was sent is successful.
  • Step 404 The NGN short message center processes the sending short message request, and after receiving the receipt of the short message receiving party, that is, the return of the destination number, returns a receiving response to the NGN terminal via the soft exchange through the SIP INFO message.
  • the receiving response must also carry the receiving response event parameter, that is, return the receiving party to the terminal to receive the short message return event parameter, as shown in Table 5:
  • the command code corresponding to the response event is 3004 in Table 1.
  • Step 405 After receiving the receiving response, the NGN terminal usually returns an acknowledgement response to the NGN short message center via the softswitch, indicating that the receiver has successfully received the short message.
  • Step 500 The NGN short message center passes the soft switch.
  • a short message request such as a SIP INFO message, is sent to the NGN terminal.
  • the receiving short message request must also carry the receiving short message event parameter, as shown in Table 6:
  • the command code corresponding to the short message event is 3005 in Table 1.
  • Step 501 After receiving the short message, the NGN terminal returns an acknowledgement message, such as a SIP 200 OK message, to the NGN short message center via the softswitch, indicating that the short message is received.
  • an acknowledgement message such as a SIP 200 OK message
  • FIG. 6 is a flowchart of an embodiment of an NGN terminal acquiring an offline short message according to the present invention.
  • the NGN short message center carries the short message.
  • the SIP INFO message is sent to the softswitch, and the softswitch discovers that the terminal is not online, and returns a 404 error code to the NGN short message center.
  • the NGN short message center stores the short message corresponding to the unsuccessful transmission of the NGN terminal.
  • the method for obtaining the offline short message by the NGN terminal of the present invention includes the following steps:
  • Step 600 The NGN terminal sends an offline short message request, such as a SIP INFO message, to the NGN short message center via the softswitch.
  • an offline short message request such as a SIP INFO message
  • the offline short message request must also carry the terminal to obtain the offline short message request event parameter, as shown in Table 7:
  • the command code corresponding to the offline short message request event of the terminal is 3006 in Table 1.
  • Step 601 The NGN short message center processes the offline short message request, and if the unsent short message corresponding to the NGN terminal is stored, the SIP 200 OK message is returned to the NGN terminal, and the offline short message is sent to the NGN terminal.
  • the method for sending an offline short message to the NGN terminal is as shown in FIG. 5, and is not repeated here.
  • NGN short message center in the present invention is transparent to the NGN terminal, and the NGN terminal realizes the SIP message exchange between the NGN terminal and the NGN short message center by the soft switch by using the SIP communication link between the existing and the soft switch. This improves the overall performance of the system, ensures high scalability and security of the system, and facilitates the expansion of other communication capabilities of the system. It is easy for NGN terminals to have instant messaging and multimedia messaging capabilities.

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Description

NGN终端实现短消息业务的方法及系统 技术领域
本发明涉及下一代网络 ( NGN, Next Generation Network )技术, 尤 指一种 NGN终端实现短消息业务的方法、 系统及 NGN短消息中心。 发明背景
NGN 是融合了公用电话交换网 (PSTN )、 公用陆地移动网络 ( PLMN )等电路交换网络和分组交换的 IP网络的新一代网络,在 NGN 中, 可以开展语音、 视频、 数据等综合业务。
NGN采用统一的具有服务质量(QoS ) 能力的 IP/MPLS承载网支 持各种业务, NGN的核心部件是具有分组交换控制能力的软交换, NGN 的呼叫控制协议为^舌初始协议(SIP ), NGN通过信令网关、 中继网关 分别接入传统电路交换网络, 从而实现与电路交换网络的互通。
短消息业务作为传统电路交换网络中的基本数据业务,在 GSM、码 分多址(CDMA )、 PHS等终端之间已经实现了互通, 而由于 NGN终端 的复杂性和多样性, 目前还没有很好的解决方案来规范各厂家 NGN终 端收发短消息的技术标准。
目前,部分 NGN终端已经实现了短消息业务, 图 1是现有 NGN终 端实现短消息业务的系统结构示意图,如图 1所示, NGN终端直接通过 私有协议和增值业务平台通信, 增值业务平台采用标准的短消息协议 ( SMPP )接入短消息系统。 NGN终端与增值业务平台之间需要重新定 义注册、 注销消息, 并且双方需要保持心跳消息来检测 NGN终端是否 在线。 增值业务平台作为联系 NGN终端和短消息系统的接入部分, 还 需要实现私有协议与标准短消息协议间的转换。
图 1中所示的系统实现短消息业务的方法大致为:
1 ) NGN终端发送短消息的方法: NGN终端与增值业务平台建立 IP 链路, 并利用建立好的 IP链路, 通过私有协议将短消息发送到增值业务 平台, 增值业务平台对接收到的短消息进行解码, 然后再编码成标准短 消息协议数据包后转发给短消息系统, 以实现 NGN终端发送短消息。
2 ) NGN终端接收短消息的方法: 短消息系统通过标准短消息协议 数据包, 将短消息发送给增值业务平台, 增值业务平台再将接收到的短 消息转换成私有协议格式的数据包, 利用 NGN终端与增值业务平台间建 立好的 IP链路转发给 NGN终端 , 从而实现 NGN终端接收短消息。
3 ) NGN终端获取离线短消息的方法: NGN终端上线后, 增值业务 平台通过 NGN终端接收短消息的方法,将该 NGN终端的离线短消息发 给 NGN终端。
从现有实现 NGN终端短消息业务的方法来看,所有的 NGN终端都 必须注册到增值业务平台, 并与增值业务平台之间建立 IP链路,保持心 跳, 这样会带来以下缺点:
( 1 ) 由于 NGN终端登录时需发送注册消息、 注销时需要发送注销 消息到增值业务平台, 而且 NGN终端与增值业务平台间需要保持心跳消 息, 会增加增值业务平台的消耗。 NGN终端发送心跳消息给增值业务平 台, 增值业务平台收到消息后, 将心跳消息中的私有消息包解码并处理 后, 再编码成私有协议的消息包作为心跳确认消息发给 NGN终端, 额外 地消耗了增值业务平台的中央处理器性能, 极大增加了系统性能开销。 以同时在线 1万用户为例, 假设心跳周期为 1分钟, 这样增值业务平台每 秒钟平均需要处理约 166条心跳消息 , 同时平台的内存中需要保存 1万个 用户的 ^舌数据。 ( 2 )根据协议, NGN终端与软交换之间已经存在 SIP协议的链路, 双方之间已有注册、 注销和心跳消息, 而现有方法需要 NGN终端额外增 加一条到增值业务平台的 IP链路, 这样, 大大增加了系统的复杂性, 减 弱了系统的可扩展性; 而且, 由于额外增加了一条 NGN终端到增值业务 平台的 IP链路, 一方面, 增值业务平台需要暴露在公网上被 NGN终端连 接, 虽然目前已经有很多关于网络安全的解决方案, 但是增加了增值业 务平台受攻击的风险, 从而增加了系统安全的风险; 另一方面, 为了降 低安全风险, 需要增加保证增值业务平台网络安全的安全设备, 从而增 加了系统的投资。
( 3 ) 由于 NGN终端登录时需要主动向增值业务平台注册, 因此必 须在 NGN终端先配置增值业务平台的 IP地址, 如果增值业务平台 IP地址 改变, 所有 NGN终端的配置都需要改变, 维护工作量非常大, 减弱了系 统的可维护性。
综上所述, 现有方案仅仅适用于 NGN终端与增值业务平台间建立 有 IP链路的网络, 对于现网上大量直接连接在软交换上的 NGN终端, 由于只有和软交换有 IP链路,还无法实现短消息业务, 并且采用现有的 解决方案无论从技术性能, 还是安全指标上都存在缺点, 尤其是增加了 系统的复杂性, 减弱了系统的可扩展性。 发明内容
有鉴于此, 本发明实施例提供一种 NGN终端实现短消息业务的方 法, 能够适用于所有 NGN终端, 增强系统的可扩展性。
本发明的另一实施例提供一种 NGN终端实现短消息业务的系统, 能够适用于所有 NGN终端 , 增强系统的可扩展性。
本发明的又一实施例提供一种 NGN短消息中心, 能够适用于所有 NGN终端, 增强系统的可扩展性。
本发明的技术方案具体是这样实现的:
一种下一代网络 NGN终端实现短消息业务的方法, 该方法包括: 软交换将来自 NGN终端的发送短消息请求转发给 NGN短消息中 心; NGN短消息中心根据接收到的发送短消息请求发送短消息到 NGN 终端。
一种下一代网络 NGN终端实现短消息业务的系统, 该系统包括: NGN终端 , 软交换以及 NGN短消息中心;
所述软交换用于透传 NGN终端与 NGN短消息中心间交互的信息; 所述 NGN短消息中心, 用于接收 NGN终端的发送短消息请求, 并 根据接收到的发送短消息请求将短消息发送到 NGN终端;
所述 NGN终端与软交换之间通过已有 SIP协议链路交互信息。 所述 NGN短消息中心包括: 发送短消息单元, 和 /或接收短消息单 元, 和 /或获取离线短消息单元, 其中,
所述发送短消息单元, 用于接收经软交换转发的来自 NGN终端的 发送短消息请求, 并向 NGN终端发送短消息;
所述接收短消息单元,用于将接收短消息请求经软交换转发给 NGN 终端, 实现 NGN终端接收短消息;
所述获取离线短消息单元, 用于接收经软交换转发的来自 NGN终 端的获取离线短消息请求, 将自身存储的该 NGN终端的短消息携带在 基于 SIP协议的消息中 , 经软交换转发给 NGN终端。
由上述技术方案可见, 本发明实施例通过设置 NGN短消息中心, 以及扩展了的 SIP消息, 实现了所有 NGN终端短消息业务。 NGN终端 利用与软交换已有的 SIP协议链路,由软交换透传 NGN终端与 NGN短 消息中心间交互的 SIP消息, 实现了 NGN终端收发短消息的能力, 增 强了系统的可维护性。
由于本发明实现短消息业务的系统中, NGN终端通过软交换的透传 与 NGN短消息中心交互信息, 对于 NGN终端来讲, NGN终端无需建 立与增值业务平台的私有协议链路, 只需要维护现有的与软交换之间的 SIP协议链路, 从而增加了系统的可扩展性和灵活性。 而且, 只要 SIP 消息承载的可扩展标记语言(XML ) 内容作一定扩展, 很容易被应用到 其它业务,比如 NGN终端即时消息、多媒体短消息等业务等;对于 NGN 短消息中心来讲, NGN短消息中心作为业务平台,只要维护和软交换之 间的链路即可, 无需再面向所有的 NGN终端, 大大提高了系统的安全 性,也节约了系统性能开销。这样, NGN网络的短消息业务可以由 NGN 短消息中心统一管理和维护, 增强了系统的可维护性。 附图简要说明
图 1是现有 NGN终端实现短消息业务的系统结构示意图; 图 2是本发明 NGN终端实现短消息业务的系统实施例的结构示意 图;
图 3是本发明 NGN终端实现短消息业务的实施例的流程图; 图 4是本发明 NGN终端发送短消息的实施例的流程图;
图 5是本发明 NGN终端接收短消息的实施例的流程图;
图 6是本发明 NGN终端获取离线短消息的实施例的流程图。 实施本发明的方式
本发明实施例中 , 软交换将发送短消息请求转发给 NGN短消息中 心, NGN短消息中心根据接收到的发送短消息请求发送短消息。
为使本发明的技术方案及优点更加清楚明白, 以下参照附图并举较 佳实施例, 对本发明进一步详细说明。
图 2是本发明 NGN终端实现短消息业务的系统实施例的结构示意 图, 如图 2所示, 该系统至少包括: NGN终端、 软交换、 NGN短消息 中心。
其中 ,软交换用于透传 NGN终端与 NGN短消息中心间的短消息相 关信息。
NGN短消息中心的业务功能与传统短消息中心一致,与传统短消息 中心不同的是: NGN短消息中心的终端接入协议是 SIP协议, 因此只要 在传统短消息中心中增设协议转换模块 , 以实现 SIP协议与 NGN短消 息中心自身协议间转换即可; 另外, 如果 NGN短消息中心内部协议为 SIP协议,则不需要进行协议转换也可以和终端交互实现短消息的发送。
下文实施例中, 以 NGN短消息中心中设置有协议转换模块为例进 行说明。
NGN短消息中心可以包括发送短消息单元 , 和 /或接收短消息单元 , 和 /或获取离线短消息单元, 其中, 发送短消息单元, 用于接收经软交换 转发的来自 NGN终端的发送短消息请求, 将接收到的基于 SIP协议的 发送短消息请求转换为基于自身协议的请求, 并发送短消息; 所述接收 短消息单元, 用于将接收短消息请求转换为 SIP协议消息后, 经软交换 转发给 NGN终端, 实现 NGN终端接收短消息; 所述获取离线短消息单 元, 用于接收经软交换转发的来自 NGN终端的获取离线短消息请求, 将自身存储的该 NGN终端的短消息携带在基于 SIP协议的消息中, 经 软交换转发给 NGN终端。
NGN终端与软交换之间的链路是协议规定的基于 SIP协议的链路, 主要实现注册、 注销、 心跳和呼叫信令消息, 但按照协议规定, 无法承 载短消息内容, 因此, 本发明对现有 SIP协议消息进行扩展, 以承载短 消息业务, 具体实现详见下文具体实施例。
图 3是本发明 NGN终端实现短消息业务的实施例的流程图, 结合 图 2, 本发明方法包括以下步骤:
步骤 300: 软交换将发送短消息请求转发给 NGN短消息中心。
发送短消息请求可以采用 SIP协议中可以携带 Body域信息的 SIP 消息, 比如: 会话外的 SIP信息(INFO )消息、 SIP消息(MESSAGE ) 消息等, 发送短消息请求中携带有 NGN短消息中心的接入码。
为了在软交换上实现 NGN终端与 NGN短消息中心间消息的透传, 需要各厂家软交换支持会话外的 SIP INFO消息或 SIP MESSAGE消息等 SIP消息的透传, 也就是说软交换能够识别本发明扩展后的 SIP消息。
NGN 终端收发短消息请求和响应都使用会话外 SIP INFO 消息或 SIP MESSAGE消息等 SIP消息, 由软交换实现透传, 通过 XML格式的 消息体携带相应的信息, NGN终端请求和响应事件如表 1所示:
Figure imgf000009_0001
表 1
在该方法之前, NGN终端必须在软交换上进行注册, 注册的方法可 参见相关协议规定, 这里不再赘述。 需要说明的是, 如果 NGN终端未 在软交换上注册, 则软交换拒绝该 NGN终端发起的发送短消息请求, 进一步地, 软交换还会根据发送短消息请求中携带的发送方信息判断该 发送短消息请求是否来自已在软交换中注册的 IP地址,如果不是,也拒 绝该 NGN终端发起的短消息请求。
由于 NGN终端直接通过软交换发送短消息请求, 因此 NGN终端只 需要配置软交换的 IP地址, 而不需要知道 NGN短消息中心的 IP地址。 NGN短消息中心的接入码携带在 SIP消息的统一资源地址请求( Request URI )字段中, 软交换收到短消息请求后, 根据 Request URI中携带的 NGN短消息中心的接入码 , 将短消息请求转发至 NGN短消息中心。
步骤 301: NGN短消息中心根据接收到的发送短消息请求发送短消 本步骤中, 在 NGN短消息中心设置有协议转换模块, 用于将来自 软交换的 SIP消息转换为自身支持的协议消息, 并按照接收到的发送短 消息请求发送短消息。
NGN短消息中心向 NGN终端发送短消息时, 也可以通过 SIP消息如 SIP INFO消息或 SIP MESSAGE消息来承载短消息 , NGN短消息中心将 短消息发送到软交换, 软交换根据 SIP消息的 Request URI中的号码即被 叫号码, 将接收到的 SIP消息透传给该被叫号码注册的 IP地址对应的 NGN终端。 从这里可见, NGN短消息中心不需要知道 NGN终端的注册 地址。
进一步地,如果 NGN终端未注册,软交换可以向 NGN短消息中心返 回类似 404的错误码。
需要说明的是,软交换透传是指软交换将接收到的 SIP消息中普通的 SIP元素不改变地进行转发, 普通的 SIP元素包括: 携带发送方信息的 From头域, 携带接收方信息的 To头域, 标识上下文类型的 Content Type 域, 上下文长度(Content Length )域, 状态码 Status Code, 携带短消息 的文体(Body )域等。
如果软交换接收到的 SIP消息中未携带有 Body域, 则软交换将该 SIP消息丢弃。
NGN短消息中心也可以采用标准短消息协议发送给普通终端。 下面结合实施例, 对本发明 NGN终端发送短消息、 接收短消息, 以及获取离线短消息的方法进行详细描述。
图 4是本发明 NGN终端发送短消息的实施例的流程图, ϋ殳 NGN 终端已在软交换进行注册, 如图 4所示, 发送短消息包括以下步骤: 步骤 400: NGN终端经由软交换向 NGN短消息中心发起发送短消 息请求。
NGN终端登陆后,可以通过好友列表、通讯簿等常用工具选择发送 短消息的目的号码, 或从菜单、 工具栏选择发送短消息, 这里, 用户如 何通过 NGN终端提供的界面发送短消息不属于本发明的范畴。
发送短消息请求如 SIP INFO消息中携带有普通的 SIP元素,这属于 本领域技术人员公知技术, 这里不再详述, 需要强调的是, To头域中携 带的是 NGN短消息中心的接入码。 此外, 发送短消息请求中还必须携 带有发送短消息事件参数, 如表 2所示:
参 数 类 型 必选 /可选 说 明
命令字 (cmd ) 整型 ( int ) 必选 发送短消息请求对应的命令 码
短消息标识 字符型串 必选 终端发送的短消息标识(唯一 ( msgid ) ( String ) 性由终端保证)
接收方 ( recv ) 字符型串 必选 接收短消息的号码
( String )
回执选项 ( isretum ) 整型 ( int ) 必选 发送终端是否需要接收短消 息回执,如 0表示不需要回执; 1表示需要回执
内容 ( cont ) 字符型串 必选 短消息内容
( String ) 表 2
本步骤中, 发送短消息请求事件对应的命令码为表 1中的 3001。 假设本实施例中, 发送短消息的 NGN终端选择需要接收短消息回 执。
步骤 401: NGN短消息中心经由软交换向 NGN终端返回发送短消 息响应如 SIP 200OK, 将处理结果返回给 NGN终端。
SIP 200OK消息中除了携带普通的 SIP元素外, 还必须携带发送短 消息响应事件参数, 如表 3所示:
Figure imgf000012_0001
表 3
本步骤中, 发送短消息响应事件对应的命令码为表 1中的 3002。 步骤 402: NGN短消息中心经由软交换向 NGN终端返回短消息转 发响应如 SIP INFO消息, 将短消息转发结果返回给 NGN终端。
SIP INFO消息中除了携带普通的 SIP元素外, 还必须携带短消息转 发响应事件参数即向终端返回发送短消息转发结果事件参数, 如表 4所 参数 类型 必选 /可选 说明
cmd int 必选 短消息转发响应的命令码
msgid String 必选 终端发送短消息标识
res int 必选 返回的短消息转发结果, 如 1表示 短消息转发成功; -1表示系统异常; -78表示短消息转发失败; -79表示 短消息过期等
表 4
本步骤中, 短消息转发响应事件对应的命令码为表 1中的 3003。 步骤 403: NGN终端收到短消息转发响应后, 通常会经由软交换向
NGN短消息中心返回响应, 表示已获得发送短消息是否成功的信息。
步骤 404: NGN短消息中心处理完发送短消息请求, 并在接收到短 消息接收方即目的号码返回的回执后, 通过 SIP INFO消息经由软交换 向 NGN终端返回接收响应。
该接收响应中除了携带普通的 SIP元素外, 还必须携带接收响应事 件参数即向终端返回接收方接收短消息回执事件参数, 如表 5所示:
Figure imgf000013_0002
Figure imgf000013_0001
本步骤中, 接收响应事件对应的命令码为表 1中的 3004。
步骤 405: NGN终端收到接收响应后, 通常会经由软交换向 NGN 短消息中心返回确认响应, 表示已获知接收方是否成功接收到短消息。
需要说明的是, NGN终端在群发短消息时, 只需将单个短消息按照 图 4所示的方法发送多次即可。 图 5是本发明 NGN终端接收短消息的实施例的流程图, 假设 NGN 终端已在软交换进行注册, 如图 5所示, 接收短消息包括以下步骤: 步骤 500: NGN短消息中心经由软交换向 NGN终端发送接收短消 息请求如 SIP INFO消息。
该接收短消息请求中除了携带普通的 SIP元素外 , 还必须携带接收 短消息事件参数, 如表 6所示:
Figure imgf000014_0001
表 6
本步骤中, 接收短消息事件对应的命令码为表 1中的 3005。
步骤 501 : NGN终端接收到短消息后, 通常经由软交换向 NGN短 消息中心返回确认消息如 SIP 200OK消息, 表示接收到短消息。
图 6是本发明 NGN终端获取离线短消息的实施例的流程图, NGN 终端离线时, 若有短消息发送给该 NGN终端, 按照图 5所示的流程, NGN短消息中心将短消息携带在 SIP INFO消息中发送给软交换, 软交 换发现终端没有上线,向 NGN短消息中心返回 404错误码,这时, NGN 短消息中心存储对应该 NGN终端的未成功发送的短消息。当 NGN终端 上线且已在软交换上注册时, 本发明 NGN终端获取离线短消息的方法 包括以下步骤:
步骤 600: NGN终端经由软交换向 NGN短消息中心发送获取离线 短消息请求如 SIP INFO消息。 该获取离线短消息请求中除了携带普通的 SIP元素外, 还必须携带 终端获取离线短消息请求事件参数, 如表 7所示:
Figure imgf000015_0001
表 7
本步骤中, 终端获取离线短消息请求事件对应的命令码为表 1中的 3006。
步骤 601: NGN短消息中心收到离线短消息请求后进行处理, 若确 实存储有对应该 NGN终端的未发送的短消息, 则向 NGN终端返回 SIP 200OK消息, 并向 NGN终端发送离线短消息。
本步骤中, 向 NGN终端发送离线短消息的方法如图 5所示, 这里 不再重述。
从本发明的 NGN终端实现短消息业务的系统及方法可见, 通过设 置 NGN短消息中心, 以及扩展了的 SIP消息, 实现了所有 NGN终端短 消息业务。本发明中的 NGN短消息中心对于 NGN终端是透明的, NGN 终端只要利用现有和软交换之间的 SIP通信链路, 由软交换实现 NGN 终端与 NGN短消息中心之间的 SIP消息的透传, 这样既提高了系统的 整体性能, 也保证了系统的高可扩展性和安全性, 同时便于系统后续的 其它通信能力的扩展, 容易使 NGN终端具备即时消息、 多媒体消息等 能力。
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做的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权利要求书
1.一种下一代网络 NGN终端实现短消息业务的方法,其特征在于, 该方法包括:
软交换将来自 NGN终端的发送短消息请求转发给 NGN短消息中 心;
NGN短消息中心根据接收到的发送短消息请求发送短消息到 NGN 终端。
2. 根据权利要求 1所述的方法, 其特征在于, 所述 NGN短消息中 心根据接收到的发送短消息请求发送短消息之前, 该方法还包括: 所述 NGN短消息中心将接收到的发送短消息请求转换为符合自身协议的消 息格式。
3. 根据权利要求 1或 2所述的方法, 其特征在于, 所述软交换将接 收到的请求转发给 NGN短消息中心之前, 该方法还包括:
若 NGN终端未在软交换上注册,则软交换拒绝该 NGN终端发起的 发送短消息请求。
4. 根据权利要求 1或 2所述的方法, 其特征在于, 所述发送短消息 请求为携带 Body域信息的 SIP消息。
5. 根据权利要求 4所述的方法, 其特征在于, 所述 SIP消息为 SIP INFO消息, 或 SIP MESSAGE消息。
6. 根据权利要求 4所述的方法, 其特征在于, 所述发送短消息请 求中携带有短消息中心的接入码、 普通 SIP元素, 以及发送短消息事件 参数;
所述发送短消息事件参数包括: 表示发送短消息请求的命令码、 用 于唯一标识发送的短消息的短消息标识、 表示接收短消息的号码的接收 方参数、 标识发送短消息的 NGN终端是否需要接收短消息回执的回执 选项, 以及携带短消息内容的内容参数。
7. 根据权利要求 1所述的方法, 其特征在于, 该方法还包括: 所述 NGN短消息中心经由软交换向 NGN终端返回发送短消息响 应, 将处理结果返回给 NGN终端;
所述 NGN短消息中心经由软交换向 NGN终端返回短消息转发响 应, 将短消息转发结果返回给 NGN终端。
8. 根据权利要求 7所述的方法, 其特征在于, 所述发送短消息响 应中携带有普通 SIP元素, 以及发送短消息响应事件参数;
所述发送短消息响应事件参数包括: 表示发送短消息响应的命令 码, 以及表示发送短消息返回的处理结果;
所述处理结果包括: 准备发送短消息, 或系统异常, 或短消息发送 失败, 或短消息不可转发。
9. 根据权利要求 7所述的方法, 其特征在于, 所述短消息转发响 应中携带有普通 SIP元素, 以及短消息转发响应事件参数;
所述短消息转发响应事件参数包括: 表示短消息转发响应的命令 码、 用于唯一标识发送的短消息的短消息标识, 以及短消息转发结果; 所述短消息转发结果包括: 短消息转发成功, 或系统异常, 或短消 息转发失败, 或短消息过期。
10. 根据权利要求 6所述的方法, 其特征在于, 若所述回执选项 为需要接收短消息回执, 该方法还包括:
所述 NGN短消息中心将短消息的接收返回的回执后, 经由软交换 向发送短消息的 NGN终端返回接收响应;
收到接收响应的 NGN终端经由软交换向 NGN短消息中心返回确认 响应。
11. 根据权利要求 10所述的方法, 其特征在于, 所述接收响应中 携带有普通 SIP元素, 以及接收响应事件参数;
所述接收响应事件参数包括: 表示接收响应的命令码、 用于唯一标 识发送的短消息的短消息标识、 短消息下发时间、 短消息发送结果; 所述短消息发送结果包括: 接收方成功接收短消息, 或系统异常, 或短消息发送失败, 或短消息过期。
12. 根据权利要求 1所述的方法, 其特征在于, 所述 NGN短消息 中心发送短消息的方法包括:
所述 NGN短消息中心经由软交换向接收方 NGN终端发送接收短消 息请求;接收方 NGN终端接收到短消息后, 经由软交换向 NGN短消息 中心返回确认消息;
或者采用标准短消息协议发送给普通终端。
13. 根据权利要求 12所述的方法, 其特征在于, 所述接收短消息 请求中携带有普通 SIP元素, 以及接收短消息事件参数;
所述接收短消息事件参数包括: 表示接收短消息请求的命令码、 表 示发送短消息的号码的发送方参数、 NGN短消息中心转发短消息的时 间, 以及转发的短消息内容。
14. 根据权利要求 12所述的方法, 其特征在于, 若接收方 NGN 终端离线, 该方法还包括: 所述软交换向 NGN短消息中心返回错误码, NGN短消息中心存储未成功发送的短消息。
15. 根据权利要求 14 所述的方法, 其特征在于, 若所述接收方 NGN终端上线且已注册, 该方法还包括:
所述接收方 NGN终端经由软交换向 NGN短消息中心发送获取离线 短消息请求; NGN短消息中心向该 NGN终端发送离线短消息。
16. 根据权利要求 15所述的方法, 其特征在于, 所述获取离线短 消息请求中携带有普通 SIP元素, 以及包含表示获取离线短消息的命令 码的获取离线短消息请求事件参数。
17. 根据权利要求 6、 8、 9、 11、 13或 16所述的方法, 其特征在 于, 所述普通 SIP元素至少包括: 携带发送方信息的 From头域、 携带 接收方信息的 To头域、 标识上下文类型的 Content Type域、 上下文 长度 Content Length域, 状态码 Status Code, 以及携带短消息的文体 Body域。
18. 一种下一代网络 NGN终端实现短消息业务的系统,其特征在 于, 该系统包括: NGN终端, 软交换以及 NGN短消息中心;
所述软交换用于透传 NGN终端与 NGN短消息中心间交互的信息; 所述 NGN短消息中心, 用于接收 NGN终端的发送短消息请求, 并 根据接收到的发送短消息请求将短消息发送到 NGN终端;
所述 NGN终端与软交换之间通过已有 SIP协议链路交互信息。
19. 根据权利要求 18所述的系统, 其特征在于, 所述 NGN短消 息中心中进一步设置有协议转换模块, 用于将接收到的经软交换转发的 来自 NGN终端的基于 SIP协议的发送短消息请求转换为自身能识别的 信息, 并发送短消息; 或者, 将接收短消息请求转换为 SIP协议消息后, 经软交换转发给 NGN终端, 实现 NGN终端接收短消息; 或者, 接收经 软交换转发的来自 NGN终端的获取离线短消息请求, 将自身存储的该 NGN终端的短消息携带在基于 SIP协议的消息中 ,经软交换转发给 NGN 终端。
20. 一种下一代网络短消息中心, 其特征在于, 所述 NGN短消息 中心包括发送短消息单元, 和 /或接收短消息单元, 和 /或获取离线短消 息单元, 其中,
所述发送短消息单元, 用于接收经软交换转发的来自 NGN终端的 发送短消息请求, 并向 NGN终端发送短消息;
所述接收短消息单元,用于将接收短消息请求经软交换转发给 NGN 终端, 实现 NGN终端接收短消息;
所述获取离线短消息单元, 用于接收经软交换转发的来自 NGN终 端的获取离线短消息请求, 将自身存储的该 NGN终端的短消息携带在 基于 SIP协议的消息中 , 经软交换转发给 NGN终端。
21. 根据权利要求 20所述的 NGN短消息中心 , 其特征在于, 所述 NGN短消息中心还包括: 协议转换模块;
所述协议转换模块, 用于将接收到的来自软交换的基于 SIP协议的 发送短消息请求转换为自身能识别的信息, 发送给所述发送短消息单 元;
或者, 将接收短消息请求转换为 SIP协议消息后, 发送给所述接收 短消息单元。
PCT/CN2007/070148 2006-09-29 2007-06-21 Procédé et système de réalisation d'un service de messages courts au moyen d'un terminal ngn WO2008037188A1 (fr)

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