WO2007009339A1 - Méthode de transmission de message et appareil reposant sur le protocole dua - Google Patents

Méthode de transmission de message et appareil reposant sur le protocole dua Download PDF

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Publication number
WO2007009339A1
WO2007009339A1 PCT/CN2006/001309 CN2006001309W WO2007009339A1 WO 2007009339 A1 WO2007009339 A1 WO 2007009339A1 CN 2006001309 W CN2006001309 W CN 2006001309W WO 2007009339 A1 WO2007009339 A1 WO 2007009339A1
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WO
WIPO (PCT)
Prior art keywords
protocol
message
identification information
signaling system
dua
Prior art date
Application number
PCT/CN2006/001309
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English (en)
French (fr)
Inventor
Yuhong Liu
Quan Gao
Sian Zong
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.)
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Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to CN200680012037.XA priority Critical patent/CN101160905A/zh
Publication of WO2007009339A1 publication Critical patent/WO2007009339A1/zh

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Classifications

    • 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
    • H04L65/1026Media gateways at the edge
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • 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
    • H04L65/1033Signalling gateways
    • H04L65/1036Signalling gateways at the edge
    • 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
    • H04L65/1043Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/18Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22Parsing or analysis of headers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Arrangements for interconnection between switching centres
    • H04M7/06Arrangements for interconnection between switching centres using auxiliary connections for control or supervision, e.g. where the auxiliary connection is a signalling system number 7 link
    • H04M7/066Arrangements for interconnection between switching centres using auxiliary connections for control or supervision, e.g. where the auxiliary connection is a signalling system number 7 link where the auxiliary connection is via an Internet Protocol network

Definitions

  • the present invention relates to the field of network communication technologies, and specifically relates to a DPA (DANS)/DASS User Adaptation Layer Protocol; Digital Private Network Signaling System/ Digital Access Signaling System User Adaptation Layer Protocol , Digital Private Network Signaling System / Digital Access Signaling System User Adaptation Layer Protocol) message transmission method and apparatus.
  • DPA DANS
  • DSS User Adaptation Layer Protocol Digital Private Network Signaling System/ Digital Access Signaling System User Adaptation Layer Protocol
  • Digital Private Network Signaling System / Digital Access Signaling System User Adaptation Layer Protocol Digital Private Network Signaling System / Digital Access Signaling System User Adaptation Layer Protocol
  • NGN Next Generation Network
  • PSTN Public Switched Telephone Network
  • IP Internet Protocol
  • SIGTRAN signaling was developed by a dedicated SIGTRAN working group established by the IETF (the Inernet Engineering Task Force). SIGTRAN signaling consists of a set of protocol families with similar basic functions. The purpose is to ensure reliable transmission of traditional circuit-switched signaling over the IP network. DUA is one of the SIGTRAN protocol families.
  • DPNSS 1 and DASS 2 are a private network signaling system widely used in telecommunications networks.
  • its Layer 2/3 protocol needs to be separated and run on the "Media Gateway” and "Media Gateway Controller” devices, such as DPNSS L3 or DASS 2 L3 protocol. Need to run on the "Media Gateway Controller” device, the DPNSS L2 or DASS 2 L2 protocol needs to run on the "Media Gateway” device.
  • the DUA protocol needs to be introduced to implement interworking of the DPNSS L3/L2 layer protocol or to implement interworking of the DASS 2 L3/L2 layer protocol.
  • the operation of the DPNSS 1 protocol on the NGN is shown in Figure 1.
  • the dotted line represents the correspondence between devices and protocols.
  • the signaling of the PBX (Private Branch Exchange) 110 in the private network is connected to the NGN network through the SG (Signalling Gateway) device 120, and accepts the MGC (Media Gateway Controller, Media Gateway Controller). Control of device 130.
  • the physical medium through which the PBX device 110 and the SG device 120 communicate is an E1 or T1 interface.
  • the operation of the DASS 2 protocol on the NGN is similar to the operation of the DPNSS 1 protocol described above on the NGN.
  • the DPNSS 1 and DASS 2 protocols may need to be run simultaneously on the same set of devices, and they need to be carried by the same DUA protocol. As shown in FIG. 1, the DPNSS 1 and DASS 2 protocols need to be simultaneously carried in the SG device 120. Same as the DUA protocol between the MGC devices 130.
  • DPNSS 1 and DASS 2 are respectively operated through different E1/T1 interfaces, that is, an E1/T1 interface can only transmit one protocol message, so that If you need to run the DPNSS 1 and DASS 2 protocols on the same device, you need to occupy two E1/T1 interfaces, which wastes E1/T1 resources and increases the networking cost of the system.
  • the invention provides a message transmission method and device based on the DUA protocol, which saves network device interface resources and reduces system networking cost.
  • a message transmission method based on a DUA protocol including:
  • the sender transmits the message to be transmitted and the protocol identification information corresponding to the message to the receiving end;
  • the receiving end determines the signaling system protocol corresponding to the message it receives according to the protocol identification information it receives.
  • the process of transmitting, by the sending end, the message to be transmitted and the protocol identification information corresponding to the message to the receiving end includes:
  • the sender carries the protocol identification information corresponding to the message that needs to be transmitted in the message, and transmits the message to the receiving end.
  • the protocol identification information is interface identification information.
  • An interface corresponds to at least two interface identification information, and one interface identifier corresponds to one signaling.
  • System protocol
  • the process of transmitting, by the sending end, the message to be transmitted and the protocol identification information corresponding to the message to the receiving end includes:
  • the sending end determines the interface for transmitting the message and the signaling system protocol corresponding to the message; the sending end determines the interface, the interface identifier information corresponding to the signaling system protocol, and carries the interface identifier information in the interface identifier of the message In the field, it is transmitted to the receiving end.
  • the process of determining, by the receiving end, the signaling system protocol corresponding to the message that is received by the receiving end according to the protocol identification information that is received by the receiving end includes:
  • the receiving end acquires interface identification information in the message received by the receiving end;
  • the receiving end determines the signaling system protocol corresponding to the obtained interface identification information according to the correspondence between the interface, the interface identifier information, and the signaling system protocol.
  • the process of transmitting, by the sending end, the message to be transmitted and the protocol identification information corresponding to the message to the receiving end includes:
  • the sender carries the protocol identification information corresponding to the message to be transmitted in a predetermined bit of the DLCI field of the common message header of the DUA protocol of the message, and transmits the information to the receiving end.
  • the predetermined bit of the DLCI field is: at least 1 bit of the first 7 bits of the DLCI field.
  • the signaling system protocol includes: a digital private network signaling system protocol, a digital access signaling system protocol; and the transmitting end and the receiving end are: a digital private network signaling system protocol entity, or a digital access signaling system Agreement entity.
  • the digital private network signaling system protocol entity is: a digital private network signaling system layer 2 protocol entity, or a digital private network signaling system layer 3 protocol entity;
  • the digital access signaling system protocol entity is: digital access Signaling System Layer 2 Protocol Entity, or Digital Access Signalling System Layer 3 Protocol Entity.
  • a message transmission apparatus based on the DUA protocol including:
  • a storage module storing protocol identification information corresponding to different signaling system protocols respectively; sending module: determining protocol identification information corresponding to the message to be transmitted according to the information stored in the storage module, and transmitting the protocol identification information and the message;
  • the receiving module determines, according to the protocol identification information it receives and the information stored in the storage module, a signaling system protocol corresponding to the message it receives.
  • the receiving end by transmitting the message to be transmitted and its corresponding protocol identification information to the receiving end, the receiving end can determine the signaling protocol of the received message according to the protocol identification information, thereby making different signaling.
  • the message of the protocol can be transmitted through the same interface in the network device, which avoids the phenomenon that messages of different protocols must be transmitted through different interfaces.
  • the receiving end can conveniently determine the protocol identification information corresponding to the message received by the receiving end; the present invention can utilize the message without any change to the DUA protocol itself.
  • the interface identifier is used to implement the transmission of the protocol identification information.
  • the invention can also implement the transmission of the protocol identification information by using reserved bits or idle bits in the common message header of the DUA protocol without affecting the connection between the transmitting end and the receiving end. Therefore, the technical solution provided by the invention achieves the purpose of saving network device interface resources and reducing system networking cost.
  • FIG. 1 is a schematic diagram of the operation of the DPNSS 1 protocol on the NGN in the prior art
  • FIG. 2 is a schematic diagram of a message transmission method based on the DUA protocol according to an embodiment of the present invention
  • FIG. 3 is a structure of a DUA common message header used in the embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a DLCI field used in an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a message transmission apparatus based on a DUA protocol according to an embodiment of the present invention.
  • the DPNSS 1 and DASS 2 protocols are simultaneously running on the same set of devices, and they need to be carried by the same DUA protocol.
  • the DPNSS 1 and DASS 2 protocols simultaneously carry the same DUA between the SG device and the MGC device.
  • the agreement is equal. If the DPNSS 1 protocol and the DASS 2 protocol can be carried simultaneously on the same set of DUA protocols and the same E1 or T1 line, the receiving end can accurately distinguish whether the message it receives is a message of the DPNSS 1 protocol or a message of the DASS 2 protocol.
  • the receiving end can process the corresponding protocol of the different signaling protocol messages received from the same interface, thereby effectively saving the interface resources of the network device and reducing Low system networking costs.
  • the core of the present invention is: setting protocol identification information corresponding to different signaling system protocols, and the transmitting end transmits the message to be transmitted and the protocol identification information corresponding to the message to the receiving end, and the receiving end according to the protocol it receives
  • the identification information determines the signaling system protocol corresponding to the message it receives.
  • the DUA When the DUA needs to transparently transmit the messages of the DPNSS 1 and the DASS 2 protocol through the same interface resource between the transmitting end and the receiving end, for example, when the same interface resource between the SG device and the MGC device transparently transmits the messages of the DPNSS 1 and the DASS 2 protocol,
  • the receiving end DUA protocol entity needs to identify whether the message currently received by the DPNSS 1 protocol message or the DASS 2 protocol message, and after determining the signaling protocol of the message, the message needs to be sent to the corresponding signaling protocol for processing.
  • the method for transmitting the corresponding protocol identification information to the receiving mountain transmission end identification information is flexible. For example, the method for separately transmitting the message and the protocol identification information corresponding to the message may be adopted, or the protocol identifier corresponding to the message and the message may be adopted.
  • the method of transmitting information together that is, the method in which the protocol identification information is carried in a message to be transmitted and transmitted to the receiving end.
  • Method 1 The receiving end uses the interface identifier to distinguish whether the message it receives is a DPNSS 1 protocol message or a DASS 2 protocol message.
  • the specific implementation method is as follows:
  • the correspondence between the interface identifier and the DPNSS 1 protocol identification information and the DASS 2 protocol identification information is not saved by the DUA protocol, and the corresponding relationship needs to be saved in the specific application.
  • the protocol message that needs to be distinguished by the present invention is: DPNSS 1 protocol message, DASS 2
  • the message of the protocol therefore, an interface can be set corresponding to two interface identifiers, and one interface identifier corresponds to a signaling system protocol.
  • the "interface identifier" is set by the DUA protocol itself and is originally used to identify different E1/T1 lines.
  • the present invention also gives the interface identifier a new meaning, that is, the present invention defines different "E1/T1 line interfaces".
  • Interface identifier ", each interface identifier corresponds to the DPNSS 1 protocol and the DASS 2 protocol, respectively.
  • interface identifier corresponds to DPNSS 1 protocol
  • n corresponds to DASS 2 protocol
  • m and n both correspond to the same E1/T1 interface.
  • the DUA protocol entity 210 receives the message reported by the different "interface identifier"
  • it can identify whether the currently reported message is a DPNSS 1 protocol message or a DASS 2 protocol message according to the interface identifier, such as when the DUA protocol is used.
  • the DUA protocol entity 210 can identify the message as a DPNSS 1 message, and report the message to the DPNSS 1 protocol entity 220 for corresponding processing;
  • the DUA protocol entity 210 can identify the message as a DASS 2 message and report the message to the DASS 2 protocol entity 230 for corresponding processing.
  • the device at the receiving end and the transmitting end such as the SG device and the MGC device, negotiate the correspondence between the interface identifier and the different signaling protocols in advance, and the devices at the receiving end and the transmitting end need to simultaneously save the "interface identifier".
  • the device at the receiving end and the transmitting end need to simultaneously save the "interface identifier".
  • DPNSS 1 protocol and DASS 2 protocol Correspondence with DPNSS 1 protocol and DASS 2 protocol. If one end of the device is not implemented in this way, it may cause problems with docking.
  • Method 2 The DUA protocol adds protocol identification information to the DUA common message header, and the receiving end uses the protocol identification information to identify whether the received message is a DPNSS 1 protocol message or a DASS 2 protocol message.
  • the specific implementation method is as follows:
  • the "Protocol Identification Information” bit is added in the DUA protocol, and the protocol identification information bit is used to identify whether the message currently sent or received by the DUA protocol is a DPNSS 1 protocol message or a DASS 2 protocol message.
  • the "Protocol Identification Information” bit in the DUA protocol can utilize the relevant reserved or idle bits in the DUA common header.
  • the common header of the DUA is shown in Figure 3.
  • the structure definition of the DLCI (Data Link Connection Identifier) field is shown in Figure 4.
  • the 0th byte in the DLCI field is The 7-bit bit is a reserved bit. Any one or more of these reserved bits can be used as the "Protocol Identification Information" bit. If the Q bit in the DLCI field is set to "0", the message that is currently carrying the DPNSS 1 protocol is identified, and the 0th bit in the DLCI field is " ⁇ , when the message currently carrying the DASS 2 protocol is identified.
  • the DUA protocol entity when it receives the message reported by the same interface, it can identify whether the currently reported message is a DPNSS 1 protocol message or a DASS 2 protocol message according to the 0th bit in the DLCI field, that is, when the DUA protocol entity receives When the message with the 0th bit in the DLCI field is "0", the DUA protocol entity can identify the message as a DPNSS 1 message, and report the message to the DPNSS 1 protocol for corresponding processing; when the DUA protocol entity receives the DLCI When the 0th bit in the field is a message of " ⁇ ", the DUA protocol entity can recognize the message as a DASS 2 message, and report the message to the DASS 2 protocol for corresponding processing.
  • This example is described by using the 0th bit as the protocol identification information, and the method of implementing the message transmission by using the other one or more reserved bits as the protocol identification information is substantially the same as the above description, and will not be described in detail herein.
  • the receiving end and the transmitting end in the present invention may be: a DPNSS 1 L2 protocol entity on the signaling gateway side or a DPNSS 1 L3 protocol entity or a DASS 2 L3 protocol entity on the side of the DASS 2 L2 protocol entity or the media gateway controller.
  • the message transmission device based on the DUA protocol provided by the present invention is shown in FIG. 5.
  • the DUA protocol-based message transmission apparatus 500 includes: a storage module 510, a receiving module 520, and a transmitting module 530.
  • the storage module 510 is mainly configured to store protocol identification information corresponding to different signaling system protocols, and the stored information may be an interface, an interface identifier, a correspondence between the DPNSS 1 protocol and the DASS 2 protocol, or at least one bit. The correspondence between the protocol identification information and the DPNSS 1 protocol and the DASS 2 protocol.
  • the sending module 530 is configured to determine the protocol identification information corresponding to the message that needs to be transmitted according to the information stored in the storage module 510, and transmit the protocol identification information and the message to the peer end.
  • the method for transmitting the protocol identification information by the sending module 530 is flexible. For example, the method for separately transmitting the message and the protocol identification information corresponding to the message may be adopted, or the method for transmitting the message together with the protocol identification information corresponding to the message may be adopted, that is, the protocol is
  • the method of transmitting the identifier information to the receiving end in the message to be transmitted is specifically described in the foregoing embodiment, and is not described in detail herein.
  • the receiving module 520 is configured to receive protocol identification information and a message transmitted by the peer end, and determine a signaling system protocol corresponding to the received message according to the protocol identification information and the information stored in the storage module 510, and store the information in the storage module 510.
  • the method for the receiving module to determine the signaling system protocol corresponding to the message is different, as described in the foregoing embodiment, and will not be described in detail herein.
  • the invention has the following beneficial effects: the transmitting end transmits the message to be transmitted and the corresponding protocol identification information to the receiving end, so that the receiving end can determine the signaling protocol of the received message according to the protocol identification information, thereby making different signaling
  • the message of the protocol can be transmitted through the same interface in the network device, which avoids the phenomenon that messages of different protocols must be transmitted through different interfaces.
  • the receiving end can conveniently determine the protocol identification information corresponding to the message received by the receiving end.
  • the embodiment of the present invention can implement the transmission of the protocol identification information by using the interface identifier in the message without any change to the DUA protocol itself; or can utilize the DUA without affecting the connection between the transmitting end and the receiving end.
  • the reserved bit or idle bit in the common header of the protocol implements the transmission of the protocol identification information.

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Description

一种基于 DUA协议的消息传输方法和装置 技术领域 本发明涉及网络通讯技术领域, 具体涉及一种基于 DUA ( DPNSS/DASS User Adaptation Layer Protocol; Digital Private Network Signaling System/ Digital Access Signaling System User Adaptation Layer Protocol, 数字私有网络信令系统 /数字接入信令系统用户适配层协议)协 议的消息传输方法和装置。
背景技术
NGN ( Next Generation Network, 下一代网络系统)正在逐渐替代目 前传统的 PSTN ( Public Switched Telephone Network, 公共电话交换网) 。 NGN和传统的 PSTN网络相比, 其最大的不同是控制系统 /承载网络的分 离, 以及语音的 IP ( Internet Protocol , 网际协议)化。
在下一代网络中, 提出了 "媒体网关控制器" 以及 "媒体网关" 的概 念, 原有的 PSTN信令移至 NGN中运行时, 层间协议将分离运行于不同的 网络部件, 为达成此目的, 引入了 SIGTRA—N ( Signalling Transport, 信令 传输)信令。
SIGTRAN信令由 IETF ( the Inernet Engineering Task Force , 互联网工 程任务组)成立的一个专门的 SIGTRAN工作组制定。 SIGTRAN信令由一 组基本功能类似的协议族组成, 其目的是保证传统电路交换信令在 IP网上 的可靠传输。 DUA是 SIGTRAN协议族中的一种。
DPNSS 1和 DASS 2是目前电信网络上广泛应用的一种私网信令系 统。 为实现 DPNSS 1/DASS 2的层间信令迁移至 NGN上运行, 其 2/3层协议 需要分离运行于 "媒体网关" 以及 "媒体网关控制器"设备上, 如 DPNSS L3或 DASS 2 L3协议需要运行于 "媒体网关控制器" 设备, DPNSS L2或 DASS 2 L2协议需要运行于 "媒体网关" 设备。 这时, 需引入 DUA协议实 现 DPNSS L3/L2层协议的互通或者实现 DASS 2 L3/L2层协议的互通。
DPNSS 1协议在 NGN上的运行情况如图 1所示。 其中, 虚线代表各设 备和协议之间的对应关系。 图 1中, 私网中的小交换机设备 ( PBX, Private Branch Exchange ) 110 的信令通过 SG ( Signalling Gateway, 信令网关)设备 120接入 NGN网络, 接受 MGC ( Media Gateway Controller, 媒体网关控制器)设备 130的控制。 PBX设备 110和 SG设备 120互通的物理媒介为 E1或 T1接口。
DASS 2协议在 NGN上的运行情况与上述 DPNSS 1协议在 NGN上的运 行情况类似。
在实际应用中,相同的一套设备上可能需同时运行 DPNSS 1和 DASS 2 协议, 而且需通过相同的 DUA协议承载, 如在图 1中, DPNSS 1和 DASS 2 协议需同时承载在 SG设备 120和 MGC设备 130间相同的 DUA协议上。
目前, 在同一套设备上同时运行 DPNSS 1和 DASS 2协议的方法为: 通过不同的 E1/T1接口分别运行 DPNSS 1和 DASS 2, 即一个 E1/T1接口 只能传输一种协议的消息,这样,如果同一套设备上需要同时运行 DPNSS 1和 DASS 2协议, 则需要占用两个 E1/T1接口, 导致浪费 E1/T1资源, 提高系统的組网成本。
发明内容
本发明提供一种基于 DUA协议的消息传输方法和装置, 节约网络设备 接口资源, 降低系统组网成本。
根据本发明的一个方面, 提供一种基于 DUA协议的消息传输方法, 包 括:
发送端将需要传输的消息及该消息对应的协议标识信息传输至接收 端;
所述接收端才艮据其接收的协议标识信息确定其接收的消息对应的信 令系统协议。
所述发送端将需要传输的消息及该消息对应的协议标识信息传输至 接收端的过程具体包括:
发送端将需要传输的消息对应的协议标识信息承载于所述消息中, 并 传输至接收端。
所述协议标识信息为接口标识信息,
且一个接口至少对应两个接口标识信息, 一个接口标识对应一种信令 系统协议。
所述发送端将需要传输的消息及该消息对应的协议标识信息传输至 接收端的过程具体包括:
发送端确定传输消息的接口及该消息对应的信令系统协议; 发送端确定所述接口、 所述信令系统协议对应的接口标识信息, 并将 该接口标识信息承载于所述消息的接口标识字段中, 传输至接收端。
所述接收端根据其接收的协议标识信息确定其接收的消息对应的信 令系统协议的过程具体包括:
接收端获取其接收的消息中的接口标识信息;
接收端根据接口、 接口标识信息与信令系统协议的对应关系确定其获 取的接口标识信息对应的信令系统协议。
所述发送端将需要传输的消息及该消息对应的协议标识信息传输至 接收端的过程具体包括:
发送端将需要传输的消息对应的协议标识信息承载于所述消息的 DUA协议的公共消息头的 DLCI字段的预定位中, 并传输至接收端。
所述 DLCI字段的预定位为: DLCI字段的前 7比特位中的至少 1比 特位。
所述信令系统协议包括: 数字私有网络信令系统协议、 数字接入信令 系统协议; 且所述发送端、 接收端为: 数字私有网络信令系统协议实体、 或数字接入信令系统协议实体。
所述数字私有网络信令系统协议实体为: 数字私有网络信令系统 2层 协议实体、 或数字私有网络信令系统 3层协议实体; 所述数字接入信令系 统协议实体为: 数字接入信令系统 2层协议实体、 或数字接入信令系统 3 层协议实体。
根据本发明的另一方面, 还提供一种基于 DUA协议的消息传输装置, 包括:
存储模块: 存储不同信令系统协议分别对应的协议标识信息; 发送模块: 根据存储模块中存储的信息确定需要传输的消息对应的协 议标识信息, 并将该协议标识信息和所述消息传输; 接收模块: 根据其接收的协议标识信息及存储模块中存储的信息确定 其接收的消息对应的信令系统协议。
通过上述技术方案的描述可知, 通过将需要传输的消息及其对应的协 议标识信息传输至接收端,使接收端能够根据该协议标识信息确定其接收 的消息的信令协议,从而使不同信令协议的消息能够通过网络设备中的同 一个接口来传输, 避免了不同协议的消息必须通过不同接口来传输的现 象。
此外, 通过将协议标识信息承载于需要传输的消息中, 使接收端能够 方便的确定其接收的消息对应的协议标识信息; 本发明能够在不对 DUA 协议本身进行任何改变的情况下, 利用消息中的接口标识符来实现协议标 识信息的传输; 本发明还能够在不影响发送端和接收端对接的情况下, 利 用 DUA协议的公共消息头中的保留位或空闲位来实现协议标识信息的传 输; 从而通过本发明提供的技术方案实现了节约网絡设备接口资源, 降低 系统组网成本的目的。
附图说明
图 1是现有技术中 DPNSS 1协议在 NGN上的运行情况示意图; 图 2是本发明实施例的基于 DUA协议的消息传输方法示意图; 图 3是本发明实施例采用的 DUA公共消息头的结构示意图;
图 4是本发明实施例采用的 DLCI字段的结构示意图;
图 5是本发明实施例的基于 DUA协议的消息传输装置示意图。
具体实施方式
在实际的组网应用中, 同一套设备上会同时运行 DPNSS 1和 DASS 2 协议, 而且需要通过相同的 DUA协议承载, 如 DPNSS 1和 DASS 2协议同 时承载在 SG设备和 MGC设备间相同的 DUA协议上等。 如果在同一套 DUA 协议以及相同的 E1或 T1线路上能够同时承载 DPNSS 1协议和 DASS 2协 议, 且接收端能够准确的区分出其接收的消息是 DPNSS 1协议的消息、 还 是 DASS 2协议的消息,接收端就能够对其从同一接口接收的不同信令协议 的消息进行相应协议的处理, 从而能够有效节省网络设备的接口资源, 降 低系统组网成本。
因此, 本发明的核心是: 设置不同信令系统协议分别对应的协议标识 信息,发送端将需要传输的消息及该消息对应的协议标识信息传输至接收 端, 所述接收端根据其接收的协议标识信息确定其接收的消息对应的信令 系统协议。
下面基于本发明的核心思想对本发明提供的技术方案做进一步的描 述。
当 DUA需要在发送端和接收端之间通过同一接口资源透传 DPNSS 1 和 DASS 2协议的消息, 如在 SG设备和 MGC设备间的同一接口资源透传 DPNSS 1和 DASS 2协议的消息时, 接收端 DUA协议实体需要识别其当前 接收的消息是 DPNSS 1协议的消息还是 DASS 2协议的消息,并在确定消息 的信令协议后 , 需要将该消息送往对应的信令协议进行处理。
由于 DUA协议本身没有相应的 "协议标识位" , 如果接收端需要识別 出其从同一接口资源接收的消息是 DPNSS 1协议的消息还是 DASS 2协议 的消息, 发送端就需要将其发送的消息对应的协议标识信息传输至接收 山 发送端传输协议标识信息的方法很灵活, 如可以采用将消息和该消息 对应的协议标识信息分别传输的方法,也可以采用将消息和该消息对应的 协议标识信息一起传输的方法, 即将协议标识信息承载于需要传输的消息 中传输至接收端的方法。
下面以协议标识信息和消息一起传输为例, 对本发明提供的两种实施 例的具体的实现方法进行详细说明。
方法一:接收端利用接口标识符来区分其接收的消息是 DPNSS 1协议 的消息还是 DASS 2协议的消息。 其具体实现方法为:
首先,需要在接收端和发送端设置接口、接口标识符与 DPNSS 1协议、
DASS 2协议的对应关系, 这里的接口包括: E1接口和 T1接口。 接口标识 符和 DPNSS 1协议标识信息以及 DASS 2协议标识信息的对应关系不由 DUA协议保存 , 其对应关系需保存在具体的应用中。
由于本发明需要区分的协议消息为: DPNSS 1协议的消息、 DASS 2 协议的消息, 因此, 可设置一个接口对应两个接口标识符, 一个接口标识 符对应一种信令系统协议。 "接口标识符 "是 DUA协议本身设置的, 原本 用于识别不同的 E1/T1线路, 本发明又赋予接口标识符一个新的含义, 即 本发明为相同的 E1/T1 线路接口定义不同的 "接口标识符", 各接口标识 符分别对应 DPNSS 1协议和 DASS 2协议。
如在图 2中,定义 "接口标识符" m对应 DPNSS 1协议、 n对应 DASS 2协议,但 m和 n均对应相同的 E1/T1接口。这样, 当 DUA协议实体 210 收到不同的 "接口标识符" 上报的消息时, 即可根据接口标识符识別当前 上报的消息为 DPNSS 1协议的消息还是 DASS 2协议的消息, 如当 DUA 协议实体 210收到 "接口标识符" m上报的消息时, DUA协议实体 210 即可识別该消息为 DPNSS 1消息, 并将该消息上报至 DPNSS 1协议实体 220进行相应的处理; 当 DUA协议实体收到 "接口标识符 " n上报的消息 时, DUA协议实体 210即可识别该消息为 DASS 2消息, 并将该消息上报 至 DASS 2协议实体 230进行相应的处理。
方法一需要接收端和发送端对接的两端设备如 SG设备和 MGC设备事 先协商好接口标识符与不同信令协议的对应关系, 而且, 接收端和发送端 的设备需要同时保存 "接口标识符"和 DPNSS 1协议、 DASS 2协议的对 应关系。 如果一端设备不按照此方法实现, 可能会给对接带来问题。
方法二: DUA协议在 DUA公共消息头中增加协议标识信息,接收端利 用该协议标识信息来识别其接收的消息是 DPNSS 1协议的消息还是 DASS 2协议的消息。 其具体实现方法为:
在 DUA协议中增加 "协议标识信息"位, 该协议标识信息位用于识别 DUA协议当前发送或接收的消息为 DPNSS 1协议的消息还是 DASS 2协议 的消息。 DUA协议中的 "协议标识信息" 位可利用 DUA公共消息头中原 有的相关保留位或空闲位。
DUA的公共消息头如图 3所示, 其中 , DLCI ( Data Link Connection Identifier,数据链路标识)字段的结构定义如图 4所示,从图 4可知, DLCI 字段中第 0个字节的前 7比特位为保留位。 这些保留位中任何一位或多位 均可用做 "协议标识信息" 位。 如设定 DLCI字段中第 Q比特位为 "0"时,标识当前承载的是 DPNSS 1协议的消息, DLCI字段中第 0比特位为 "Γ,时,标识当前承载的是 DASS 2协议的消息, 那么, 当 DUA协议实体收到同一接口上报的消息时, 即 可根据 DLCI字段中第 0比特位识别当前上报的消息为 DPNSS 1协议的消 息还是 DASS 2协议的消息, 即当 DUA协议实体收到 DLCI字段中第 0 比特位为 "0"的消息时, DUA协议实体即可识别该消息为 DPNSS 1消息, 并将该消息上报至 DPNSS 1协议进行相应的处理; 当 DUA协议实体收到 DLCI字段中第 0比特位为 "Γ 的消息时, DUA协议实体即可识别该消 息为 DASS 2消息, 并将该消息上报至 DASS 2协议进行相应的处理。 这 个例子是将第 0比特位作为协议标识信息来描述的, 将其它一位或多位保 留位作为协议标识信息来实现消息传输的方法与上述描述基本相同,在此 不再详细描述。
本发明中的接收端和发送端可以为: 信令网关侧的 DPNSS 1 L2协议 实体或 DASS 2 L2协议实体或媒体网关控制器侧的 DPNSS 1 L3协议实体 或 DASS 2 L3协议实体。
本发明提供的基于 DUA协议的消息传输装置如图 5所示。
图 5中, 基于 DUA协议的消息传输装置 500包括: 存储模块 510, 接收 模块 520和发送模块 530。
存储模块 510主要用于存储不同信令系统协议分别对应的协议标识信 息, 其存储的信息可以为接口、 接口标识符与 DPNSS 1协议、 DASS 2协议 的对应关系, 也可以为至少一比特位的协议标识信息与 DPNSS 1协议、 DASS 2协议的对应关系。
发送模块 530主要用于根据存储模块 510中存储的信息确定需要传输 的消息对应的协议标识信息, 并将该协议标识信息和所述消息传输至对 端。 发送模块 530传输协议标识信息的方法很灵活, 如可以采用将消息和 该消息对应的协议标识信息分别传输的方法, 也可以采用将消息和该消息 对应的协议标识信息一起传输的方法, 即将协议标识信息承载于需要传输 的消息中传输至接收端的方法, 具体如上述实施例中的描述, 在此不再详 细描述。 接收模块 520主要用于接收对端传输来的协议标识信息和消息, 并根 据该协议标识信息及存储模块 510中存储的信息确定其接收的消息对应的 信令系统协议, 当存储模块 510中存储的信息不同时, 接收模块判断消息 对应的信令系统协议的方法也不相同, 具体如上述实施例中的描述, 在此 不再详细描述。
本发明的有益效果是: 发送端将需要传输的消息及其对应的协议标识 信息传输至接收端,使接收端能够根据该协议标识信息确定其接收的消息 的信令协议, 从而使不同信令协议的消息能够通过网络设备中的同一个接 口来传输, 避免了不同协议的消息必须通过不同接口来传输的现象。
此外, 通过将协议标识信息承载于需要传输的消息中, 使接收端能够 方便的确定其接收的消息对应的协议标识信息。
本发明的实施例能够在不对 DUA协议本身进行任何改变的情况下 ,利 用消息中的接口标识符来实现协议标识信息的传输; 或者能够在不影响发 送端和接收端对接的情况下,利用 DUA协议的公共消息头中的保留位或空 闲位来实现协议标识信息的传输。 通过本发明提供的技术方案, 可以实现 节约网络设备接口资源, 降低系统组网成本的目的。
虽然通过实施例描绘了本发明, 本领域普通技术人员知道, 本发明有 许多变形和变化而不脱离本发明的精神, 本发明的申请文件的权利要求包 括这些变形和变化。

Claims

权 利 要 求
1、 一种基于 DUA协议的消息传输方法, 其特征在于, 包括: 发送端将需要传输的消息及该消息对应的协议标识信息传输至接收 端;
所述接收端根据其接收的协议标识信息确定其接收的消息对应的信 令系统协议。
2、如权利要求 1所述的一种基于 DUA协议的消息传输方法, 其特征 在于, 所述发送端将需要传输的消息及该消息对应的协议标识信息传输至 接收端的过程具体包括:
发送端将需要传输的消息对应的协议标识信息承载于所述消息中, 并 传输至接收端。
3、如权利要求 1或 2所述的一种基于 DUA协议的消息传输方法, 其 特征在于, 所述协议标识信息为接口标识信息, 且一个接口至少对应两个 接口标识信息, 一个接口标识信息对应一种信令系统协议。
4、如权利要求 3所述的一种基于 DUA协议的消息传输方法, 其特征 在于, 所述发送端将需要传输的消息及该消息对应的协议标识信息传输至 接收端的具体包括:
发送端确定传输消息的接口及该消息对应的信令系统协议; 发送端确定所述接口、 所述信令系统协议对应的接口标识信息, 并将 该接口标识信息承载于所述消息的接口标识字段中 , 传输至接收端。
5、如权利要求 4所述的一种基于 DUA协议的消息传输方法, 其特征 在于, 所述接收端根据其接收的协议标识信息确定其接收的消息对应的信 令系统协议的过程具体包括:
接收端获取其接收的消息中的接口标识信息;
接收端根据接口、接口标识信息与信令系统协议的对应关系确定其获 取的接口标识信息对应的信令系统协议。
6、如权利要求 2所述的一种基于 DUA协议的消息传输方法, 其特征 在于, 所述发送端将需要传输的消息及该消息对应的协议标识信息传输至 接收端的过程具体包括: 发送端将需要传输的消息对应的协议标识信息承载于所述消息的
DUA协议的公共消息头的 DLCI字段的预定位中, 并传输至接收端。
7、如权利要求 6所述的一种基于 DUA协议的消息传输方法, 其特征 在于, 所述 DLCI字段的预定位为: DLCI字段的前 7比特位中的至少 1 比特位。
8、如权利要求 1或 2所述的一种基于 DUA协议的消息传输方法, 其 特征在于, 所述信令系统协议包括: 数字私有网络信令系统协议、 数字接 入信令系统协议; 且所述发送端、 接收端为: 数字私有网络信令系统协议 实体、 或数字接入信令系统协议实体。
9、如权利要求 8所述的一种基于 DUA协议的消息传输方法, 其特征 在于, 所述数字私有网络信令系统协议实体为: 数字私有网絡信令系统 2 层协议实体、 或数字私有网络信令系统 3层协议实体; 所述数字接入信令 系统协议实体为: 数字接入信令系统 2层协议实体、 或数字接入信令系统 3层协议实体。
10、 一种基于 DUA协议的消息传输装置, 其特征在于, 包括: 存储模块: 存储不同信令系统协议分别对应的协议标识信息; 发送模块: 根据存储模块中存储的信息确定需要传输的消息对应的协 议标识信息, 并发送该协议标识信息和所述消息;
接收模块: 根据其接收的协议标识信息及存储模块中存储的信息确定 其接收的消息对应的信令系统协议。
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CN1384651A (zh) * 2001-05-08 2002-12-11 深圳市中兴通讯股份有限公司上海第二研究所 一种多信令点多协议的实现方法

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* Cited by examiner, † Cited by third party
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CN107959661A (zh) * 2016-10-17 2018-04-24 中兴通讯股份有限公司 一种信息处理方法和装置
CN107959661B (zh) * 2016-10-17 2020-10-23 南京中兴新软件有限责任公司 一种信息处理方法和装置
CN112771805A (zh) * 2018-09-28 2021-05-07 苹果公司 新无线电(nr)的基于序列的上行链路(ul)传输取消
CN112771805B (zh) * 2018-09-28 2024-01-26 苹果公司 新无线电(nr)的基于序列的上行链路(ul)传输取消

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CN1897590A (zh) 2007-01-17
GB0613964D0 (en) 2006-08-23

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