CN102238164B - Internet protocol (IP) telecommunication network-oriented multi-protocol message adaptation method - Google Patents
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Abstract
The invention discloses an Internet protocol (IP) telecommunication network-oriented multi-protocol message adaptation method. The method comprises that: when a data message of an external network enters an IP telecommunication network, source terminal equipment judges a network communication protocol used by the data message; when the data message is encapsulated into a network layer packet, a protocol adaptation field for storing the type information of the network communication protocol used by the data message is set in the payload of a network layer; and after receiving the network layer packet, destination terminal equipment judges the network communication protocol used by the data message according to the information in the protocol adaptation field, performs processing according to the network communication protocol, and transmits the processed data message to a corresponding external network for continuous transmission. By the message adaptation method, a data plane can be effectively shared, and the data adaptation method has more remarkable advantages when data plane resources are relatively more strained. In addition, by the message adaptation method, protocol unawareness can be realized, and internal transmission efficiency is improved.
Description
Technical field
The present invention relates to a kind of multi-protocols message adaptation method, particularly relate to one to implement towards IP Telecommunication Network, the data message of various network communication protocol can be made realizing the multi-protocols message adaptation method of transparent carrying through IP Telecommunication Network, belong to telecommunication technology field.
Background technology
Current, the basic reality that conventional telecommunications net faces is: the depletion rate of bandwidth is far faster than the growth rate gathering way and take in of flow, and the impact of IP operation to PSTN voice service is fairly obvious.In this context, people generally believe: telecommunications network is facing great technology shifts, need new next generation network structure and technology supports.
Through research, inventor thinks that the next generation network (NGN) that effectively can meet future traffic demand should be the public data network that is core with digital packet technology.The basic characteristics of this public data network are: bearer network and service network are separated, and carry numerous service network, reduce the operation cost of business with this significantly with a bearer network based on IP agreement.Based on the IP Telecommunication Network technology that such public data network formerly can propose by inventor.
IP Telecommunication Network is inventor is the new ideas proposed in the patent of invention of ZL 200410037641.0 in the patent No..Its adopts unique interior outer double-layer structure and double address addressing system, by least one the multiple location being positioned at internal layer without connection data net (referred to as PTDN net) be positioned at outer field multiple IP network and form, also comprises multiple edge gateway equipment.IP network is connected without connection data net by the multiple location of edge gateway equipment and this.Each multiple location also comprises at least one address mapping device without in connection data net; Edge gateway equipment completes the mapping between double address by address mapping device.Multiple location is all assigned a multiple location without connection data net address without all devices in connection data net and edge gateway equipment, all devices in IP network and above-mentioned edge gateway equipment are all assigned IP address, IP address and multiple location are kept among the address mapping table in address mapping device without the mapping relations between connection data net address, connect after edge gateway equipment is authenticated and between address mapping device.Have network management device in multiple location without connection data net inside, this network management device manages multiple location without the access layer equipment in connection data net, convergence-level equipment and core layer equipment simultaneously.
In practice, IP Telecommunication Network, as an independently data network, has the advantages that resource is independent, known, controlled, can better for user provides various types of business, also may be used for carrying other business network, as other business networks such as IP network, ATM net, FR net and the Internets.
No matter the business with bright characteristics and application that IP Telecommunication Network self is provided, still existing multiple business network is connected, and future the dazzling new business that may occur and application, in the network environment of IP Telecommunication Network Already in multi-protocols, this just needs IP Telecommunication Network must possess the ability can supporting various procotol.Therefore, the data message of various network communication protocol how is made just to become the major issue solved required for IP Telecommunication Network technology realizing transparent carrying through IP Telecommunication Network.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of multi-protocols message adaptation method towards IP Telecommunication Network.The method can make the data message of various network communication protocol in the carrying realizing " transparent " through IP Telecommunication Network.
For realizing above-mentioned goal of the invention, the present invention adopts following technical scheme:
Towards a multi-protocols message adaptation method for IP Telecommunication Network, it is characterized in that comprising following step:
(1) when data message enters IP Telecommunication Network, the end equipment being positioned at source judges which kind of network communication protocol described data message uses;
(2) when described data message is packaged into network layer packet, protocol adaptation field is set in original network layer payload, for storing the type information of the network communication protocol that data message uses;
(3) after the end equipment being positioned at destination receives described network layer packet, according to the information in described protocol adaptation field, judge which kind of network communication protocol described data message uses, then process according to this network communication protocol, send into corresponding external network and proceed transmission.
Method provided by the present invention does not need, for often kind of network communication protocol distributes an independently datum plane, effectively to share datum plane.When data-plane resource is relatively nervous, advantage is more obvious.In addition, owing to being bearing protocol Adapted information in the legacy network layer payload of IP Telecommunication Network, so the routing/exchanging equipment of IP Telecommunication Network inside does not need the process being concerned about this partial content, agreement unaware can be realized, improve inner efficiency of transmission.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the encapsulation format schematic diagram of existing network layer grouping in IP Telecommunication Network;
The encapsulation format schematic diagram of network layer packet of Fig. 2 for improving in the present invention;
Fig. 3 be IPv4 data flow through IP Telecommunication Network, utilize the present invention to realize the exemplary plot of intercommunication.
Embodiment
By analysis, inventor thinks the level for different business and access thereof, finally can conclude on certain network communication protocol.Therefore, the basic ideas of multi-protocols message adaptation method provided by the present invention are: first in the legacy network layer payload of the network layer packet of IP Telecommunication Network, increase protocol adaptation information and (be embodied as protocol code, data message as FR agreement all has protocol code 111, the data message of File Transfer Protocol all has protocol code 112 etc.), to make the recipient of data message know the protocol type of this data message, end equipment as recipient processes accordingly according to protocol stack, thus realizes the carrying of multi-protocol data message.End equipment herein refers to and uses IP Telecommunication Network to carry out initial plant and the terminating Equipment of data interaction, such as, be the apparatus for network node of IP Telecommunication Network or edge gateway equipment etc.
Figure 1 shows that the local encapsulation format of existing network layer grouping in IP Telecommunication Network.As can be seen from Figure 1, this encapsulation format forms primarily of three parts: link layer frame head, network layer packet header and network layer payload.Wherein, there is more excess room in network layer payload part, can be used to place protocol adaptation information.For this reason, as shown in Figure 2, subspace is gone out, for the type information of storage networking communication protocol at the head Further Division of network layer payload part.Therefore, this sub spaces, according to its major function, can be called protocol adaptation field.This protocol adaptation field is used for the protocol type information of data content (this data content be placed in network layer payload part after protocol adaptation field) of stored messages and possible other adapting operation information for using the network layer transport service of IP Telecommunication Network to use.
In IP Telecommunication Network, the data message being sent to destination from source external network transmits in the following way: first, outer net destination address in data message, from the data message of external network, is delivered to address mapping device (referred to as ADT equipment) by edge gateway equipment (referred to as the ED equipment) reception being positioned at source; Address mapping device carries out outer net destination address and multiple location without the address resolution between connection data net address and mapping, by the multiple location of destination ED equipment that obtains without the loopback of connection data net address to source ED equipment; Source ED equipment to send datagram destination ED equipment without connection data net address according to multiple location; Destination ED equipment receives data message, according to outer net destination address externally network forward this data message further, thus make data message finally arrive destination.
To be undertaken by IP Telecommunication Network at data message in the process transmitted, in fact the process of address transition is exactly the process of data message Reseal/decapsulation.From the data message of external network in the mode of Business Stream (protocol streams) when entering IP Telecommunication Network the Network layer function of the end equipment use IP Telecommunication Network of IP Telecommunication Network (or time), by information such as the datum plane at this data message place, communication port, the edge gateway equipment (or the network layer module in the end equipment of IP Telecommunication Network) of IP Telecommunication Network can judge which kind of network communication protocol data message uses.When carrying out data message encapsulation, protocol type belonging to data message, determine used network communication protocol coding, this network communication protocol encode seal is installed in protocol adaptation field, the data content (also can be data message itself) of message is encapsulated in network layer payload simultaneously, is sent in IP Telecommunication Network.
After the end equipment of IP Telecommunication Network receives corresponding data message, according to the protocol code in protocol adaptation field, what judge to carry in network layer payload is the data message of which kind of network communication protocol, then carry out follow-up process according to this network communication protocol, send into corresponding external network and proceed transmission.
Below, realize intercommunication for IPv4 data flow through IP Telecommunication Network to be further detailed multi-protocols message adaptation method provided by the present invention.As shown in Figure 3, the user A based on the N1 network of IPv4 agreement needs by the N2 network (as calling party B) of IP Telecommunication Network access based on IPv4 agreement.When Data flow direction ED equipment 1 from N1 network, suppose that this data flow is by certification, is allowed to enter IP Telecommunication Network, by the IPv4 port that this data flow uses, ED equipment 1 knows that the data flow entered is the data flow based on IPv4 agreement.Then, ED equipment 1 is after the transfer resource having known the remote outlet (i.e. ED equipment 2) that this IPv4 data flow is corresponding and the corresponding IP Telecommunication Network that will use, this IPv4 data flow is carried out address transition and encapsulation operation (can with further reference to inventor first patent ZL 200410070502.8 " method for packing that in IP Telecommunication Network system, divide into groups without connection data net in multiple location "), and by the protocol code write protocol adaptation field of mark IPv4 agreement, then IPv4 data stream is entered in network layer payload, transmit in IP Telecommunication Network inside.Like this, when the ED equipment 2 being positioned at remote outlet receives the data message from IP Telecommunication Network inside, releasing network layer encapsulation after, enter external network before, by the further parsing to protocol adaptation field, can know that this data content is IPv4 data flow, thus the IPv4 protocol stack that can enter ED equipment 2 carries out subsequent treatment, the N2 network trunk that finally this IPv4 data flow enters into based on IPv4 agreement resumes defeated.
In " the multi-protocols message transmitting method towards IP Telecommunication Network " of the application of applicant's separate case, propose to use different datum planes (or virtual circuit) to go to carry dissimilar protocol massages.But this technical scheme needs to distribute an independently datum plane for often kind of network communication protocol, therefore higher to the resource requirement of datum plane.And utilize multi-protocols message adaptation method provided by the present invention, effectively sharing of datum plane can be realized.When the resource of datum plane is relatively nervous, advantage is more obvious.In addition, owing to being bearing protocol Adapted information in the legacy network layer payload of IP Telecommunication Network, so the routing/exchanging equipment of IP Telecommunication Network inside does not need the process being concerned about this partial content, agreement unaware can be realized, improve inner efficiency of transmission.Even if when the network communication protocol carried is expanded, also can not impact the routing and switching function of routing/exchanging equipment.
Above the multi-protocols message adaptation method towards IP Telecommunication Network provided by the present invention has been described in detail, but obvious specific implementation form of the present invention is not limited thereto.For the those skilled in the art of the art, the various apparent change carried out it when not deviating from right of the present invention is all within protection scope of the present invention.
Claims (4)
1., towards a multi-protocols message adaptation method for IP Telecommunication Network, it is characterized in that comprising following step:
(1) when data message enters IP Telecommunication Network, the end equipment being positioned at source judges which kind of network communication protocol described data message uses, after described end equipment judges the network communication protocol belonging to described data message, described data message is carried out address translation operation;
(2) when described data message is packaged into network layer packet, according to the protocol type belonging to described data message, determine used network communication protocol coding, and described network communication protocol coding is encapsulated in the protocol adaptation field arranged in network layer payload as protocol adaptation word;
(3) after the end equipment being positioned at destination receives described network layer packet, according to the information in described protocol adaptation field, judge which kind of network communication protocol described data message uses, then process according to this network communication protocol, send into corresponding external network and proceed transmission.
2., as claimed in claim 1 towards the multi-protocols message adaptation method of IP Telecommunication Network, it is characterized in that:
Described step (1) in, by communication port or network layer application interface information, described end equipment judges which kind of network communication protocol described data message uses.
3., as claimed in claim 1 towards the multi-protocols message adaptation method of IP Telecommunication Network, it is characterized in that:
Described step (2) in, in described network layer payload, store the data content of described data message.
4., as claimed in claim 1 towards the multi-protocols message adaptation method of IP Telecommunication Network, it is characterized in that:
Described step (2) in, in described network layer payload, store described data message itself.
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| CN104639507B (en) * | 2013-11-13 | 2018-04-24 | 中国科学院声学研究所 | A kind of bearing protocol packet data transmission method and system between heterogeneous network |
| CN105577579B (en) * | 2014-10-17 | 2020-09-01 | 中兴通讯股份有限公司 | Method and system for processing protocol message in service function chain and service function node |
| CN105610672B (en) * | 2016-01-14 | 2019-04-26 | 中国联合网络通信集团有限公司 | A kind of method and device of information transmission |
| CN114466072B (en) * | 2020-11-10 | 2024-04-02 | 深圳Tcl新技术有限公司 | Data processing method, intelligent terminal and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1553661A (en) * | 2003-05-28 | 2004-12-08 | ��Ϊ��������˾ | Method for point to point transparent transmission |
| CN1578238A (en) * | 2004-04-28 | 2005-02-09 | 信息产业部电信研究院 | Ip telecommunication network system and it realizing method |
| CN1731759A (en) * | 2004-08-05 | 2006-02-08 | 信息产业部电信研究院 | Multi-address connectionless data network packet package method in IP telecommunication network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1553661A (en) * | 2003-05-28 | 2004-12-08 | ��Ϊ��������˾ | Method for point to point transparent transmission |
| CN1578238A (en) * | 2004-04-28 | 2005-02-09 | 信息产业部电信研究院 | Ip telecommunication network system and it realizing method |
| CN1731759A (en) * | 2004-08-05 | 2006-02-08 | 信息产业部电信研究院 | Multi-address connectionless data network packet package method in IP telecommunication network |
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