CN101729592B - Distributed communication network and equipment and communication network separation method - Google Patents
Distributed communication network and equipment and communication network separation method Download PDFInfo
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Abstract
The invention discloses a distributed communication network and equipment and a communication network separation method which are mainly applied to the field of mobile communication. The communication network separation method comprises the following steps of: receiving and judging a service request of a user; and transmitting the service request to a service distribution network or a distributed service network according to the content of the service request. In the distributed communication network and equipment and the communication network separation method, a distributed network networking mode separating a value added service and a communication service is designed according to the difference of the value added service and the traditional communication service, thereby better fusing the value added service and the traditional communication service and enhancing the quality of services.
Description
Technical field
The present invention relates to a kind of distributed communication network framework, particularly a kind of distributed communication network, equipment and communication network separation method.
Background technology
Along with being extensive use of and the rapid growth of mobile communication subscriber quantity of the progress of mobile communication technology, mobile communications network, mobile communications network also provides increasing diversified data service for the terminal use except communication service is provided.Along with the develop rapidly of professional scale, data business content is more and more abundanter, and customer volume increases gradually, and the pressure of the network bandwidth and business platform load is also being increased gradually.At traditional C/S (Client/Server, client/server) under the networking model, service server and network bandwidth performance have become the professional bottleneck that continues development, and increase number of servers simply, simply increasing bandwidth be difficult to have satisfied the business demand that rapidly increases, and has also brought huge cost consumption simultaneously.How under existing network condition, provide high-quality business service, become following mobile network to develop problem demanding prompt solution.
Present mobile core network has mainly carried two class business, and first traditional communication business also has the value-added service towards content.Fig. 1 is that example has shown the existing network Organization Chart with the GPRS net, and existing mobile network is that a multiple business mixes, the network of centralized management as can be seen.Exactly in order to satisfy the demand of mobile communication, core net is mainly finished the tasks such as route control, code number management, route control, addressing, address administration, data management, resource control, charging, safety management, service discovering and professional triggering of signaling message to mobile network at the beginning of design; And along with the development of the Internet and mobile terminal device, increasing value-added service is opened up at original mobile network downward, yet for the appreciation service, core net need finish that content provides, forwarding, data route, flow control, flow measurement, QoS service and charge, task such as safety.Mainly finish function by signaling for the communication service core net, then need to finish the function that is similar to present the Internet for the value-added service core net towards content.
Merge problem in order to solve multiple business, 3GPP has formulated IP Multimedia System, and (IPMultimedia Subsystem IMS), is 3G network core technology standard, being included into the core standard framework of next generation network (NGN), is a kind of basic technology that realizes that fixed network and mobile network are merged.IMS is divided into three-tier architecture, as shown in Figure 2.
Orlop is Access Layer, and the user can pass through GPRS, UMTS, WMN/WLAN and CDMA, DSL accessing business network, and these networks are referred to as IP-CAN.No matter specifically adopt any access way, as long as based on the IP technology, all IMS subscriber signalings just can be sent to the signaling key-course well.The intermediate layer is the signaling key-course, is made up of network comtrol server, is in charge of and calls out or session setting, modification and release, and the signaling control of all IP multimedia service is all finished at this one deck.This one deck has been arranged such as different network elements such as CSCF, HSS (Home Subscriber Server, home subscriber server), MGCF, the collaborative processing capacity of finishing the signaling aspect.Topmost one deck is service layer, and following Access Layer and signaling key-course provide an integrated network platform, provides various multimedia services to allow content service provider in service layer.Service is all by application server operation, and application server not only is responsible for carrying and is carried out service, but also will use Session Initiation Protocol that interface at key-course is provided.
Visit quality and backbone bandwidth problem for solving the user in the fixed network, be extensive use of content distributing network (Content Distribution Network, CDN).The basic functional principle of CDN is exactly extensively to adopt various caching servers, and these caching servers are distributed in user's visit concentrated relatively area or network.When user's access websites, utilize global duty balancing technique (Global Server Load Balance, GSLB), user's visit is directed on the nearest caching server working properly of user distance, is directly responded user's request by caching server.If the content that does not have the user to visit in the caching server, it can remove to grasp the corresponding page and offer the user to former server automatically according to configuration.After therefore in case the CDN system normally moves, the distribution of content, the location of user's visit all is automatic.
2.5G the initial design of core net framework is the network at mobile communication business, does not consider the growth requirement of following data service.Development along with mobile communication network technology, for 3G technology provides better network environment, 3GPP is in order to promote multimedia service better application under 3G such as download, Streaming Media, design the core standard of IMS technology as 3G, but experienced problem with regard to having ignored the network bandwidth and the user that multi-media value-added business brings at the beginning of the design of IMS.No matter for 2.5 or the 3G network framework, design philosophy all is placed on communication service and value-added service network under the unified shader, does not reasonably design the separation core planar network architecture at two kinds of traffic performances customizations.
For value-added service still based on traditional C/S model, dramatic growth along with calling party, the server end bandwidth can be taken fast, and service server also can't satisfy flood tide user's frequent visit, and bandwidth, server I/O can become the bottleneck of business service.And if simply increase bandwidth and increase number of servers, will inevitably cause the complicated of network configuration, the design original intention of this and next generation network runs in the opposite direction, and also can increase cost greatly simultaneously.If the network architecture is ignored the solution of multi-service being merged problem, can cause network architecture complexity, network element, interface are numerous, cause the interaction flow complexity, safeguard loaded down with trivial detailsly, and the exploitation of business also is subject to network, can't carry out business development and deployment fast.In addition, single-point bottleneck and Single Point of Faliure appear in centralized network element design easily, and resource is not rationally taken full advantage of, and logic and information can not be shared.
The CDN network has solved above-mentioned service quality problem in the fixed network, yet because it is based on the network architecture of fixed network, can not satisfy mobile network's characteristic, isomerism, mobility as portable terminal all are the insurmountable problems of traditional C DN, fixed network CDN also only supports the value-added service of conventional contents data downloaded class, and the traditional communication business can't be used the professional characteristic of accelerating among the fixed network CDN; And CDN at the architecture design of the Internet, does not consider separately at mobile communication core net and Access Network framework that just content distribution and user's bootstrap technique do not have the special technique in conjunction with mobile network and user location yet among the CDN.
Summary of the invention
The objective of the invention is to disclose a kind of distributed communication network, equipment and communication network separation method, to solve the better problem that merges of value-added service and traditional business.
In order to realize above purpose, the invention discloses a kind of communication network separation method, may further comprise the steps: receive and detect service request from user; Content according to service request is transmitted to distribution of services net or distributed service network with service request.
In the technique scheme, service request is transmitted to the distribution of services net or distributed service network comprises according to the content of service request: if service request is value-added service, service request is forwarded to the distribution of services net; If service request is communication service, service request is forwarded to distributed service network.
In the technique scheme, value-added service comprises the data class value-added service, is specially: with web page browsing, file download, streaming media playing is service feature, is that the content of obtain manner is obtained the class business with C/S or B/S.
In the technique scheme, communication service comprises speech and/or speech value-added service, is specially: basic voice and video communication class business, instant message class business, multimedia conferencing.
The invention discloses a kind of distributed communication network, comprise Access Layer, network layer and application layer: Access Layer, be used for making the user insert distributed communication network, by judging service request from user, service request is transmitted to network layer; Network layer is divided into distribution of services net and distributed service network according to professional difference, and the distribution of services net is born value-added service, and distributed service network is born communication service; Application layer is used for according to service request from user, provides business service to the user.
In the technique scheme, the distribution of services net comprises core node layer, backbone node layer and fringe node layer: the core node layer, be used for formulating content, user's boot policy by from backbone node layer collecting device information, finish the control to the whole service distribution networks; The backbone node layer, be used for the content in the zone and the control of cache node, finish mutual with the core node layer, for the core node layer provides cache node information in the zone, obtain content, user's boot policy from the core node layer, realize the control to cache node; The fringe node layer is used for disposing cache node, and the service content of buffer memory core node layer and backbone node layer is for the user provides service.
In the technique scheme, the core node layer comprises the content core node, the content core node comprises the content that the whole network business, portal website, the whole network content supplier provide, and the content that the whole network business of content core node, portal website, the whole network content supplier provide manages by the whole network business management system.
In the technique scheme, distributed service network is the communication network based on P2P-SIP, comprises Core server, and each Core server is the P2P node, and is interconnected by P2P mechanism between the Core server.
In the technique scheme, distributed service comprises the DHT table, and the DHT table is kept in each P2P node, is used for storage user routing iinformation.
In the technique scheme, the geographical distribution of P2P node comprises according to the difference of P2P mechanism: flat, annular, matrix and/or netted.
The invention discloses a kind of distributed communication equipment, be applied to above-mentioned distributed communication network, comprise gateway support node: gateway support node is used for according to the content of customer service request the customer service request being transmitted to distribution of services net or distributed service network.
In the technique scheme, gateway support node comprises: the traffic differentiation module is used for value-added service request and communication service request are divided in the customer service request; The distribution of services module is used for the user of value-added service and user's access service distribution networks and distributed service network service of accepting business respectively of communication service.
Distributed communication network disclosed by the invention, equipment and communication network separation method, different according to value-added service and traditional communication business, designed the networking mode that value-added service is separated with communication service, value-added service and traditional communication business are better merged, improved the quality of business service.
Description of drawings
Fig. 1 is GPRS network Organization Chart in the prior art of the present invention;
Fig. 2 is IMS network architecture diagram in the prior art of the present invention;
Fig. 3 is the embodiment of the invention two distributed communication network Organization Charts;
Fig. 4 is embodiment of the invention Three S's DN network architecture diagram;
Fig. 5 is the flow chart of streaming media service request among the embodiment of the invention Three S's DN;
Fig. 6 is the embodiment of the invention four DSN network architecture diagram;
Fig. 7 is the flow chart of VoIP service request among the embodiment of the invention four DSN;
Fig. 8 is the structured flowchart of the embodiment of the invention five distributed communication equipment gateway support nodes.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
The present invention is based on mobile network's characteristic, consider the essential different of value-added service and traditional communication business, designed the distributing network networking mode that value-added service is separated with communication service.
At problems of the prior art, the present invention has designed the distributing network framework that value-added service is separated with communication service, this network architecture is made up of two parts, be respectively distribution of services net (Service Delivery Network, SDN) and distributed service network (DistributeService Network, DSN).
Wherein, for the professional SDN network that uses such as web page browsing, download and Streaming Media, the SDN network architecture can provide the value-added service service of high-quality for the user with reference to the design architecture of CDN.
And designed the DSN network for communication services end to end such as VoIP, multimedia conferencing and IM, the network architecture distributed, flattening that DSN has designed, in shielding bottom-layer network difference, provide open same interface for the upper strata, business development ability fast is provided, DSN guarantees that with P2P technology and Internet resources technology combines, and operator may effectively be controlled resource and service implementation.
As shown in Figure 3, the embodiment of the invention one discloses a kind of distributed communication network, and this communication network is divided into Access Layer, network layer and application layer 3 layer network frameworks:
Access Layer is used for the access of communication terminal device, comprises gateway support node.The user can use 2.5G, 2.75G or 3G to insert by gateway support node, and this gateway support node is specially GGSN (Gate GPRS Support Node, GGSN) in 2.5G.After the user inserted, gateway support node can be judged service request from user, was transmitted to SDN or DSN provides service for the user according to the content of service request.
Network layer is divided into SDN and DSN according to the difference of business, and SDN mainly carries as web page browsing, file and downloads and value-added service such as streaming media playing communication services end to end such as the main voice-bearer communication of DSN, VoIP, IM and multimedia conferencing.
Application layer, be used for according to service request from user, the network platform of utilizing Access Layer and network layer to provide provides various multimedia service services for the user, and wherein, the business platform of the SP of content service provider and the CP of content supplier provides service and/or content in application layer to the user.
Be fixed network the future that can predict mobile network's development, mobile network merges, communication service, the next generation network that multi-service is merged, for such as VoIP, communication service such as IM and videoconference, its essence is the teleservice of conventional telecommunications net, and for web page browsing, value-added services such as download and Streaming Media, essential then be the C/S business of the Internet, if to this two classes business simple syndication under the same network architecture, can cause network configuration too complicated, and each Network Element Function also can be too numerous and diverse, must cause to be difficult to administer and maintain, also can hinder lifting service quality.The present invention is provided with the distributing network framework that value-added service separates with communication service for these problems, the SDN network is set bears value-added service, and the network architecture that SDN uses multistage distributing network and P2P anastomose to close can provide high-quality content service for the user.And being provided with the communication service of the DSN network carrying, DSN uses the P2P technology, has guaranteed the effective control to resource, business, has also guaranteed the stable of network.
The embodiment of the invention one is different according to value-added service and communication service, designed the communication network that separates, better meet the demand of future network development, the framework that separates can better be realized professional expansion, convenient management, charging to different business, also make simultaneously the each several part function clear and definite of network, simply be easy to safeguard; Wherein, SDN essence is multistage distributing network, similar to CDN of the prior art, core technology is bootstrap algorithm and content distribution algorithms, and DSN is based on the communication network of P2P-SIP, and it is a kind of communication network of flattening, its core technology is signaling P2P algorithm, the Networking Design that SDN of the present invention separates with DSN is easier to the enforcement of two kinds of algorithms, has improved efficiency of algorithm.
As shown in Figure 4, the embodiment of the invention two discloses the SDN network, is used for the carrying value-added service, comprises 3 level frameworks:
The one-level platform is the core node layer, this layer at first comprises the content core node, the content core node comprises two parts: one, comprise the whole network business platform and the portal website that are applied to SDN, its two, comprise the content that the whole network CP provides, two parts all pass through the management of the whole network business management system, the whole network business management system is used for open authentication, charging triggering, stream service control interface, finishes the intercommunication with the whole network business platform, finishes subscription authentication, charging and stream service control by the whole network business platform; Secondly, this layer is also finished core control function, by from backbone node layer collecting device information, formulates content, user's boot policy, finishes the control to whole SDN.
The secondary platform is the backbone node layer, province, Da Qu node all are deployed in this layer, this node layer has all or part of function of core node, the main control of being responsible for the content in this zone and cache node, and finish mutual with the core node layer, for the core node layer provides the information of cache node in this zone, and obtain content and user's boot policy from the core node layer and realize control to cache node.
The fringe node layer, cache node is deployed in this layer, cache node is provided with caching server, be mainly used to the service content of buffer memory core node layer and backbone node layer, for communication terminal provides service, this layer has used the P2P technology, can on the basis of buffer memory, effectively alleviate the burden of core node, the user is by directly inserting this layer, and visit SDN obtains business service.
Be example with the streaming media playing in the value-added service of SDN carrying now, introduce the realization flow of value-added service among the SDN, specifically as shown in Figure 5:
Step S102, the user sends the access service request to core node, and this service request comprises application such as WAP page is browsed, file download, streaming media playing;
Step S104, the geographical location information of core node by obtaining, be redirected the caching server of policy selection optimum according to the network bandwidth, caching server load and platform, the calculating of optimum caching server need be used redirecting technique, can select the redirected strategy in the CDN network, also can select to be more suitable for the redirected strategy of mobile network's characteristic;
Step S106, the URL of the optimum caching server that core node will calculate or IP address are transmitted to the user;
Step S108, the user is according to URL or the IP address access cache node of the optimum caching server that obtains, and the requested service service if the content of business service exists, then provides business service to the user immediately in fringe node;
Step S110 is if the content of business service is then obtained content to backbone node not in fringe node;
Step S112 is if the also content of this business service not of backbone node is then obtained content to core node;
Step S114, the content of business service is issued to backbone node and fringe node by core node after core node is acquired;
Step S116, cache node provides business service according to service request from user to the user.
SDN network reference of the present invention the design of CDN, the content storage is distributed to network edge, be in the caching server (Cache Server), dynamic traffic distribution controller and GSLB device by network, ask to be directed to automatically the user on the caching server that health is available and distance users is nearest, with the response speed that improves user's visit and the availability of service, solve technically because the network bandwidth is little, user's visit capacity is big, the unequal former thereby application service quality problem that causes of network point distribution comprehensively.Because content distribution network can improve utilization efficiency of network resources effectively, when improving the core net bandwidth availability ratio, improve user's access speed, increase the service availability of application and the ability of opposing assault.
The embodiment of the invention two discloses the SDN based on CDN, combines the advantage of CDN and P2P technology, can provide the value-added service of high-quality more for the user.
As shown in Figure 6, the embodiment of the invention three discloses the DSN based on P2P-SIP, is used for carrying communication service end to end.P2P (peer to peer, point-to-point) technology is a very swift and violent technology of development in the existing Internet architecture, it has broken through the concept that legacy clients is separated with server, no longer client-server is distinguished, each client computer that is in the P2P node is server, can directly carry out mutual between per two client computer.
Existing DSN is in January, 2008, and ITU-T SG13 is by new Question Q.G:NewQuestion on Distributed Services Networking (DSN), and it is positioned the evolution of NGN.
The communication service distributing network (DSN) of the present invention's design is based on the network of P2P-SIP technology.P2P-SIP is that VoIP is in order to solve the scheme of single point failure and performance bottleneck problem design at first, it is with the combination of P2P and sip technique, utilize the flexibility of P2P and the characteristics of load balancing to transform original centralized call control realization framework based on SIP, the realization of P2P-SIP is the transmission of carrying sip message with the P2P network, only need be encapsulated in sip message in the message that has the P2P system and transmit, satisfy and existing SIP system compatibility.The P2P-SIP working group of IETF has defined the P2P-SIP node, and how common a kind of user and resource of not having center control that provide under the SIP environment located.Support the P2P-SIP node under the environment of non-SIP, to work in addition, resource and the user location of no center control is provided for the application on upper strata.
The present invention is suggested in conjunction with the framework of the DSN (Distributed ServiceNetwork) of P2P-SIP technology under this background, can make operator not only simply support traditional telecommunication service and following new business, also make operator can fully adopt the characteristics of P2P distribution technique, new business is carried out in deployment rapidly and efficiently.
The present invention is based on P2P-SIP by P2P technology and distributed computing technology, realize user data management and session control by one group of node that homogenizes, and in conjunction with communication network can run, manageable framework, realize the function of telecommunication service core net.
The present invention is by introducing the whole NGN of P2P distributed technological innovation, and DSN architectural framework of the present invention can help operator to take full advantage of the technology of Internet, thereby abundant more business can be provided, and better provides service for the user.The DSN architectural framework can cut operating costs, and the VoIP operation system that quality assurance is arranged of high efficiency, low cost is provided.Under the basis of P2P technology, this VoIP system can be realized the function of traditional voice service, and can guarantee the high security of communicating by letter between voice quality clearly, good NAT penetration capacity and user.
DSN of the present invention, whole network are flat structures, and in DSN, each Core server all is the P2P node, and be interconnected by P2P mechanism between the Core server, each other load sharing.The user is connected to any P2P node, can effectively obtain service.DSN of the present invention also comprises the DHT table, and described DHT table storage user routing iinformation is kept in each P2P node, and user's essential information is preserved in the whole network by P2P, and part of nodes rolls off the production line or breaks down and can not have influence on the normal operation of whole DSN network; And to enlarge the capacity of DSN, it is just passable to add new P2P node.The P2P node scatters everywhere geographically, and the difference according to the P2P mechanism of selecting for use can be (CAN agreement), netted (Pastry agreement and the Tapestry agreement) of annular (Chord agreement), matrix in logic.
DSN has carried communication service end to end, communication service end to end is the business between two or more communication terminals, at first need a certain user to make a call, the INVITE request of structure SIP standard, issue the server that is connected with this user, wait acknowledge then, Fig. 7 has shown the realization flow of the VoIP in the communication service end to end:
Step S202, calling subscriber wish to set up conversation with the called subscriber, initiate the INVITE call request to local network element;
Step S204, local network element handle the INVITE request, take out called subscriber's MSISDN (Mobile Station ISDN, mobile subscriber ISDN sign indicating number) from the INVITE head, obtain called subscriber's routing iinformation by hash algorithm;
Step S206, local network unit are transmitted to called network element by the P2P network with the INVITE call request according to user's routing iinformation;
Step S208, called subscriber receive the INVITE call request;
Step S210, called subscriber accept calling subscriber's call request, echo reply.
Step S212, calling subscriber receive and reply, foundation and called subscriber's end-to-end calling, and communication end to end can not passed through the P2P network between later user.
The embodiment of the invention four discloses the DSN based on P2P-SIP, and each Core server is the P2P node, has guaranteed the expansibility of network, has shared the burden of single server.
The embodiment of the invention four discloses the distributed communication equipment of supporting embodiment one distributed communication network, as shown in Figure 8, comprise gateway support node 1, packet data package in 1 pair of communication network of gateway support node is carried out protocol conversion, packet data package is sent to data network, and is used for according to the content of customer service request the customer service request being transmitted to distribution of services net or distributed service network.
Gateway support node 1 comprises traffic differentiation module 2, is used for value-added service request and communication service request are divided in the customer service request; Distribution of services module 3 is used for the user of value-added service and user's access service distribution networks and distributed service network service of accepting business respectively of communication service.
The traffic differentiation module 2 of gateway support node be used for to be distinguished value-added service and communication service, and traffic differentiation module 2 can be according to the IP address, and/or professional communication protocol, distinguishes the type of user's request, needs which kind of network to finish business by to judge.For example say that for HTTP, FTP or the service request of agreement H.264 traffic differentiation module 2 can be distinguished it and be value-added service, this service request can be delivered to SDN and carry out Business Processing; For the service request of Session Initiation Protocol, traffic differentiation module 2 can be distinguished it and be communication service, and this service request can be delivered to DSN and carry out Business Processing.
Traffic differentiation module 2 also can be distinguished the address style that service request is judged in tabulation by configuration of IP address, should finish with which kind of network to determine this service request.
Distribution of services module 3 is with the user of value-added service and user's access service distribution networks and distributed service network service of accepting business respectively of communication service.
The embodiment of the invention four disclosed distributed communication equipments, support separates SDN with DSN distributed communication network only needs carry out the simple software configuration to existing equipment, can be upgraded to new distributed communication network.
The embodiment of the invention five discloses a kind of communication network separation method, communication network is divided into Access Layer, network layer and application layer 3 layer architectures, network layer is divided into distribution of services net (Service Delivery Network according to the difference of business, SDN) and distributed service network (Distribute ServiceNetwork, DSN), SDN mainly carries with web page browsing, file is downloaded, streaming media playing is service feature, with C/S or B/S (Browser/Server, browser/server) obtain the class business for the content of obtain manner, DSN carries basic voice and video communication class business, instant message class business, business such as multimedia conferencing.
This communication network separation method may further comprise the steps:
Step 1: receive and to judge that also service request from user, service request from user are divided into two kinds of value-added service and communication services;
After receiving service request from user, can be according to the IP address of service request, and/or professional communication protocol, distinguish the type of user's request, need which kind of network to finish business by to judge.For example say that for HTTP, FTP or the service request of agreement H.264 can distinguish it and be value-added service, this service request can be delivered to SDN and carry out Business Processing; For the service request of Session Initiation Protocol, can distinguish it and be communication service, this service request can be delivered to DSN and carry out Business Processing.
After receiving service request from user, also can distinguish the address style that service request is judged in tabulation by configuration of IP address, should finish with which kind of network to determine this service request.
Step 2: the content according to described service request is transmitted to distribution of services net or distributed service network with described service request.
Content according to service request is transmitted to distribution of services net or distributed service network with described service request, if described service request is value-added service, described service request is forwarded to distribution of services net (SDN); If described service request is communication service, described service request is forwarded to distributed service network (DSN).
Distributed communication network disclosed by the invention, equipment and communication network separation method, different according to value-added service and traditional communication business, designed the networking mode that value-added service is separated with communication service, value-added service and traditional communication business are better merged, improved the quality of business service.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (10)
1. a communication network separation method is characterized in that, may further comprise the steps:
Receive and the judgement service request from user;
Content according to described service request is transmitted to distribution of services net SDN or distributed service network DSN with described service request, comprising:
If described service request is value-added service, described service request is forwarded to the distribution of services net;
If described service request is communication service, described service request is forwarded to distributed service network;
Wherein, described DSN is the communication network based on P2P-SIP, and is interconnected by P2P between the network node;
Described SDN is directed to user's request on the caching server that health is available and distance users is nearest by dynamic traffic distribution controller and the GSLB device of network.
2. method according to claim 1 is characterized in that, described value-added service comprises the data class value-added service, is specially:
With web page browsing, file download, streaming media playing is service feature, is that the content of obtain manner is obtained the class business with C/S or B/S.
3. method according to claim 1 is characterized in that, described communication service comprises speech and/or speech value-added service, is specially:
Basic voice and video communication class business, instant message class business, multimedia conferencing.
4. a distributed communication network is characterized in that, described distributed communication network comprises Access Layer, network layer and application layer:
Described Access Layer is used for making the user insert described distributed communication network, by judging service request from user, described service request is transmitted to described network layer;
Described network layer is divided into distribution of services net SDN and distributed service network DSN according to professional difference, and described distribution of services net is born value-added service, and described distributed service network is born communication service; Described application layer is used for according to described service request from user, provides business service to described user;
Described DSN is the communication network based on P2P-SIP, and is interconnected by P2P between the network node;
Described SDN is directed to user's request on the caching server that health is available and distance users is nearest by dynamic traffic distribution controller and the GSLB device of network.
5. distributed communication network according to claim 4 is characterized in that, described distribution of services net comprises core node layer, backbone node layer and fringe node layer:
Described core node layer is used for formulating content, user's boot policy by from described backbone node layer collecting device information, finishes the control to the whole service distribution networks;
Described backbone node layer, be used for the content in the zone and the control of cache node, finish mutual with described core node layer, for described core node layer provides the zone interior cache node information, obtain content, user's boot policy from described core node layer, realize the control to described cache node;
Described fringe node layer is used for disposing described cache node, and the service content of the described core node layer of buffer memory and backbone node layer is for described user provides service.
6. distributed communication network according to claim 5 is characterized in that, described core node layer comprises the content core node, and described content core node comprises: the content that the whole network business, portal website, the whole network content supplier provide;
The content that described the whole network business of content core node, portal website, the whole network content supplier provide manages by the whole network business management system.
7. distributed communication network according to claim 4, it is characterized in that described distributed service network is the communication network based on P2P-SIP, comprises Core server, each described Core server is the P2P node, and is interconnected by P2P mechanism between the described Core server.
8. distributed communication network according to claim 7 is characterized in that, described distributed service network comprises the DHT table:
Described DHT table is kept in each described P2P node, is used for storage user routing iinformation.
9. distributed communication network according to claim 7 is characterized in that, the geographical distribution of described P2P node comprises according to the difference of described P2P mechanism: flat, annular, matrix and/or netted.
10. a distributed communication equipment is characterized in that, comprises gateway support node:
Described gateway support node is used for according to the content of customer service request the customer service request being transmitted to distribution of services net SDN or distributed service network DSN;
Described gateway support node comprises:
The traffic differentiation module is used for service request from user is divided into value-added service request and communication service request;
The distribution of services module is used for the user of value-added service and user's access service distribution networks and distributed service network service of accepting business respectively of communication service;
Described DSN is the communication network based on P2P-SIP, and is interconnected by P2P between the network node;
Described SDN is directed to user's request on the caching server that health is available and distance users is nearest by dynamic traffic distribution controller and the GSLB device of network.
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