WO2006131057A1 - Procédé et appareil d’implémentation du proxy de signalisation - Google Patents
Procédé et appareil d’implémentation du proxy de signalisation Download PDFInfo
- Publication number
- WO2006131057A1 WO2006131057A1 PCT/CN2006/001187 CN2006001187W WO2006131057A1 WO 2006131057 A1 WO2006131057 A1 WO 2006131057A1 CN 2006001187 W CN2006001187 W CN 2006001187W WO 2006131057 A1 WO2006131057 A1 WO 2006131057A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- packet
- proxy
- signaling
- address
- message
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1043—Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/563—Data redirection of data network streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/564—Enhancement of application control based on intercepted application data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
Definitions
- the present invention relates to the field of network communication technologies, and in particular, to a method and apparatus for signaling processing in a communication network. Background technique
- VoIP voice over IP
- FIG. 1 The networking structure in the VoIP network is as shown in FIG. 1, which includes a signaling agent SP (Signaling Proxy) and Media Agent MP (Media Proxy) two parts.
- SP Signaling Agent
- MP Media Proxy
- the signaling proxy SP can be regarded as a server for the VoIP user (ie, the user terminal TE), that is, the registration and call messages of the user are sent to the SP first, and then the SP is processed by the SP and then forwarded to the server.
- the SP can be regarded as a user to the server.
- the server first sends the request for calling the call to the SP first, and the SP is processed by the signaling and then forwarded to the real called user.
- SIP Session Initiation Protocol
- H.323 H.323
- MGCP Media Gateway Control Protocol
- H.248 H.248
- the media agent is used to perform proxying of the media stream.
- the media streams that the user communicates with the outside world are processed and forwarded by the MP.
- Media streams generally refer to Real Time Transport Protocol (RTP) / Real Time Transport Control Protocol (RTCP) streams.
- RTP Real Time Transport Protocol
- RTCP Real Time Transport Control Protocol
- the session table of the media stream processing on the MP is dynamically generated/deleted by the SP instruction.
- SP and MP are logical concepts.
- An SP can communicate with one or more MPs.
- the SP can also be integrated with the MP in one device.
- the SP and MP can be implemented as separate devices or integrated into other devices.
- the SP only processes packets with the destination address to the SP.
- a router device is added to Figure 2 for clarity of illustration.
- the SP is connected to the router.
- the router sends the corresponding packet to the SP for processing. Therefore, the SP can only receive and process signaling packets from the destination address to the SP.
- TEl-1, TE1-2 is connected to SP1; TE2-1, TE2-2 is connected to SP2. Because the SP only processes the signaling packets of the destination address to the SP, the destination address that the TEl-x needs to send the packet is the address of the SP1, and the destination address that the TE2-X sends the packet needs to be the address of the SP2.
- the current method is to implement the implementation of a special domain name server (DNS) device, as shown in Figure 4, specifically: Configure the same domain name for all TEs, and DNS will return for different TEs.
- DNS domain name server
- Different SP addresses For example, for TEl-x, the address of the returned server is the address of SP1; for TE2-x, the address of the returned server is the address of SP2.
- this implementation has higher requirements for the DNS server.
- the server needs to be able to make a difference judgment based on the address of the terminal.
- normal DNS servers do not support this type of application.
- DHCP dynamic host configuration protocol
- a method for implementing a signaling proxy provided by the present invention includes:
- the signaling agent After receiving the packet, the signaling agent determines the packet to be processed by the proxy according to the configured policy, and performs proxy processing on the packet and forwards the packet.
- the policy includes: using one or more combination identifiers of the VPN identifier, the VLAN identifier, the MPLS identifier, the IP protocol type, the source IP address, the source port, the destination IP address, and the destination port of the received packet, and the signaling agent needs to be performed. Processed message.
- the method further includes:
- the destination address information of the message to be proxied by the proxy is set to the local address on the signaling agent.
- the signaling proxy After receiving the packet sent by the proxy, the signaling proxy determines that it needs to perform proxy processing according to the destination address information in the packet.
- the destination address of the packet is replaced with a server address
- the source address replaces the server side address of the signaling proxy, and the packet is forwarded.
- the signaling proxy After receiving the packet sent by the server, the signaling proxy replaces the source address in the packet from the server with the destination address of the original packet sent by the proxy, and uses the destination in the packet from the server. The address is replaced with the address of the agent and the message is forwarded.
- the signaling agent processing includes:
- the source, destination IP address, and port number of the received packet are exchanged, the data of the application layer is replaced, the signaling state is updated, and/or the session entry is created.
- the forwarding policy is configured on the network device that sends the packet by the proxy.
- the forwarding policy specifies that the forwarding path of the packet requiring the proxy passes the corresponding signaling proxy.
- the signaling agent After receiving the packet returned by the server, the signaling agent forwards the packet according to the recorded forwarding path information.
- the network device is configured as a default gateway of the signaling proxy.
- the signaling proxy receives the packet returned by the server, the packet is processed and sent to the default gateway.
- an apparatus for implementing a signaling proxy includes: a message receiving and identifying unit configured with an agent processing policy for identifying a message requiring a signaling agent;
- the packet processing unit processes the packet that needs to perform signaling proxying; the packet forwarding unit forwards the processed packet to the corresponding server.
- the agent processing strategy includes:
- the packet that needs to be processed by the signaling agent is identified by one or more combinations of the VPN identifier, the VLAN identifier, the MPLS identifier, the IP protocol type, the source IP address, the source port, the destination IP address, and the destination port of the received packet.
- the signaling agent processing includes:
- the source and destination IP addresses and port numbers of the received packets are converted, the data of the application layer is replaced, the signaling state is updated, and/or session entries are created.
- the signaling proxy device After receiving the packet, the signaling proxy device replaces the source address in the packet with the destination address of the original packet sent by the proxy, and replaces the destination address in the packet from the server with the proxy. Address, and forward the message according to the replaced address.
- the implementation of the present invention enables a large number of terminal TEs to be sent to the same IP address or domain name, thereby providing great convenience for the wide application of VoIP services.
- the present invention does not need to improve the existing terminal equipment in the specific implementation process, so that the implementation of the invention is relatively simple.
- the present invention does not require special DNS and DHCP devices to provide support during the specific implementation process. Therefore, the implementation cost and difficulty of the present invention are greatly reduced.
- FIG. 1 is a schematic structural diagram of a networking of a VoIP network in the prior art
- FIG. 2 is a schematic structural diagram of a networking of a VoIP network in the prior art
- FIG. 3 is a schematic diagram of a networking structure of a VoIP network in the prior art
- FIG. 4 is a schematic diagram of a networking structure of a VoIP network provided with a DNS server
- FIG. 5 is a schematic diagram of a networking structure of a VoIP network provided with a DHCP server;
- FIG. 6 is a schematic diagram of a process for implementing an agent according to an embodiment of the present invention.
- FIG. 7 is a schematic diagram of an existing signaling transmission direction of a VoIP network parallel networking structure
- FIG. 8 is a schematic diagram of a signaling transmission direction after the invention is used in FIG. detailed description
- the core of the invention is an active proxy method, which is a non-native signaling report of the destination address. Acting as a proxy. .
- the present invention can be divided into two situations according to the networking situation of the proxy (Proxy) in the network: one is a serial networking, and the other is a parallel networking.
- the specific implementation process of the present invention will be described below in two cases.
- the SP device string is between the terminal and the server.
- the packet will still pass the SP.
- the present invention needs to solve the problem that the SP can provide a proxy for a message whose destination address is not its own address.
- the address of the terminal TE is A
- the address of the SP terminal is B
- the address of the SP server is C
- the address of the server is D.
- Step 61 Configure the packet information that needs to be processed by the proxy on the SP.
- the proxy is configured to perform proxy processing on the packet whose destination address is E. Therefore, the SP can be configured to proxy only the configured packets according to the configuration.
- Step 62 The agent, for example, the user terminal side or the server side sends a message to the SP.
- the user terminal is used as an example for description.
- the source address of the message is Aa
- the destination address is Ee
- the message is ⁇ Aa. — Ee>4 ⁇ ;
- Step 63 Determine, according to the configured packet information, a packet that needs to be processed by the proxy, and perform proxy processing on the packet.
- the SP determines the destination address of the packet, and checks whether the packet is allowed to be sent by the signaling proxy. If not, the packet is forwarded or discarded according to the configuration. If yes, the message proxy processing needs to be performed on the message;
- the signaling proxy processing flow generally includes: converting a source, a destination IP address, and a port (ie, converting from ⁇ 8 & -5 6 > to ⁇ 0; - 0 £ 1>), and replacing data of the application layer; Update the status of the signaling; create a session entry to facilitate the fast return of the message from the server side to the corresponding session and so on.
- Step 64 After the signaling proxy processing is completed, send the text to the server; specifically: sending, by the SP, the message ⁇ Cc - Dd> to the server; for the server, the terminal is from ⁇ Cc>.
- Step 65 The server returns a corresponding packet to the SP.
- the response message is sent to the address ⁇ (:0, the message sent by the server is ⁇ Dd - Cc>;
- Step 66 After receiving the signaling message of the ⁇ Dd - Cc> from the server, the SP processes the packet, and replaces the IP address and port with ⁇ Ee - Aa>;
- the source address in the packet is not converted into the SP's own address B, but is converted into the corresponding address E, and the SP updates the state of the corresponding session;
- Step 67 The SP sends the message ⁇ Ee - Aa> to the terminal, and the packet received by the terminal comes from E, thus completing the interaction of the message.
- the above process requires the SP to support the filtering of messages from the time the message is received. There are changes to the process of sending and receiving messages.
- the SP can also process the message as follows, still taking the situation in Figure 6 as an example:
- the SP configures the address E as an address of the SP device; the address may be an IP address on a logical interface or an IP address on the real physical interface;
- the SP receives the signaling packet whose destination address is E. For the SP, it is the packet to the local machine.
- the SP can directly process the message according to the existing signaling processing flow
- the SP is not allowed to spread the route of this address, that is, the IP address is meaningful only in the SP native. Otherwise, because two or more devices in the network have the same IP address, some routes may be invalidated, causing packets to be sent to the wrong device.
- the specific implementation of the present invention will be described below in the case of parallel networking.
- the policy routing function can be enabled on the router (that is, the packet is forwarded according to the forwarding policy).
- the forwarding policy needs to be configured in advance, that is, the router performs routing according to the set policy, instead of Simply route according to the destination address.
- such a policy can be set on the router: For packets whose destination address is A, it will be forwarded to the interface connected to the SP. In this way, when the router receives the signaling packet whose destination address is A, the router can forward the packet to the SP. In this way, the SP can receive the signaling message.
- the processing procedure of the received signaling message by the SP is the same as that described in the present invention in the case of serial networking.
- the SP can use the corresponding router as its default gateway, so that the SP can send the packet to the router. Then, the router sends the packet to the terminal.
- the corresponding forwarding policy can be configured on the SP. Send to the corresponding router device.
- the SP may learn to record the corresponding address information when receiving the packet sent by the router, and may forward the processing according to the recorded address information when receiving the packet returned by the server. It can be applied to the case where the parallel networking mode and the serial networking mode coexist.
- the router described in the present invention may also be a switch device or other network device having a forwarding function.
- the implementation of the present invention makes it possible to implement the signaling proxy function relatively easily in the communication network, and the implementation of the entire signaling proxy function does not require the addition of new devices, so that the implementation cost of the signaling proxy function is low.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007540480A JP4777998B2 (ja) | 2005-06-07 | 2006-06-02 | シグナリングプロキシの実施方法及び装置 |
US10/593,524 US20080281916A1 (en) | 2005-06-07 | 2006-06-02 | Method and Apparatus for Implementing Signaling Proxy |
CN200680012034.6A CN101160904B (zh) | 2005-06-07 | 2006-06-02 | 一种实现信令代理的方法及装置 |
EP06742074A EP1777915A4 (en) | 2005-06-07 | 2006-06-02 | METHOD AND DEVICE FOR IMPLEMENTING A SIGNALING PROXY |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200510075021.0 | 2005-06-07 | ||
CNA2005100750210A CN1878126A (zh) | 2005-06-07 | 2005-06-07 | 通信网络中实现信令代理的方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006131057A1 true WO2006131057A1 (fr) | 2006-12-14 |
Family
ID=37498121
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2006/001187 WO2006131057A1 (fr) | 2005-06-07 | 2006-06-02 | Procédé et appareil d’implémentation du proxy de signalisation |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080281916A1 (zh) |
EP (1) | EP1777915A4 (zh) |
JP (1) | JP4777998B2 (zh) |
CN (2) | CN1878126A (zh) |
WO (1) | WO2006131057A1 (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101123527B (zh) * | 2007-02-25 | 2010-10-27 | 华为技术有限公司 | 一种流媒体系统、信令转发设备以及流媒体发送方法 |
US9088430B2 (en) | 2008-02-19 | 2015-07-21 | Qualcomm Incorporated | Providing network originated push messages for remotely testing a mobile device |
KR101276088B1 (ko) | 2008-09-02 | 2013-06-18 | 에스케이플래닛 주식회사 | 메시지 전송 시 보안 인터페이스를 정의하는 시스템 및 방법 |
CN106559333A (zh) * | 2015-09-29 | 2017-04-05 | 中兴通讯股份有限公司 | 报文转发方法、业务链代理装置及代理设备 |
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JP4236364B2 (ja) * | 2000-04-04 | 2009-03-11 | 富士通株式会社 | 通信データ中継装置 |
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2006
- 2006-06-02 CN CN200680012034.6A patent/CN101160904B/zh not_active Expired - Fee Related
- 2006-06-02 US US10/593,524 patent/US20080281916A1/en not_active Abandoned
- 2006-06-02 EP EP06742074A patent/EP1777915A4/en not_active Ceased
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- 2006-06-02 JP JP2007540480A patent/JP4777998B2/ja active Active
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Also Published As
Publication number | Publication date |
---|---|
JP2008520133A (ja) | 2008-06-12 |
JP4777998B2 (ja) | 2011-09-21 |
CN101160904A (zh) | 2008-04-09 |
EP1777915A4 (en) | 2007-10-31 |
US20080281916A1 (en) | 2008-11-13 |
CN1878126A (zh) | 2006-12-13 |
EP1777915A1 (en) | 2007-04-25 |
CN101160904B (zh) | 2014-04-30 |
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