CN101360037B - Data service network system and access method of data service - Google Patents
Data service network system and access method of data service Download PDFInfo
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Abstract
The invention discloses a data service network system as well as an access method of data services, and the system comprises: an access gateway, a service gateway, a first border router which is connected with the access gateway for converging and classifying a user data flow and transmitting the user data to a second border router via virtual private network; and the second border router which is connected with the service gateway and connected with the first border router via the virtual private network for transmitting the user data to the service gateway. In the technical proposal, the service flow does not pass through a GRE tunnel for encapsulation and decapsulation due to the introduction of VPN in IP bearer network, thereby breaking through limitations of GRE encapsulation efficiency and bandwidth and eliminating the performance bottleneck problem of the whole network brought by NAT conversion.
Description
Technical field
The present invention relates to the access method of a kind of network system and data service, especially a kind of own data service and the network system of publicly-owned data service and access method of data service handled belongs to communication technical field.
Background technology
In today of scientific and technological develop rapidly, variation with rapid changepl. never-ending changes and improvements is also taking place in network technology.Nowadays, network provides various, colourful data service for the user, and the user is access network whenever and wherever possible, the inquiry information needed.Yet along with the continuous development of network technology, the user wishes that more colourful form obtains more resources from network, and visit is more professional.
Shown in Figure 1, it is the data service network system structural representation of prior art, mainly comprises:
Subscriber equipment (User Equipment is called for short UE) is the terminal equipment of initiating service request, comprises that various mobile phone terminals, intelligent terminal etc. are with information communication terminal equipment wired or that wireless mode inserts.
IAD (Access Gateway, be called for short AG), it is sent to network that bearer service uses such as TCP/IP network or network X.25 with the service request data bag, realize the intercommunication between access network and the bearer service application network, AG can be Gateway GPRS Support Node, asymmetric digital subscriber line, Broadband Remote Access Server, Digital Subscriber Line Access Multiplexer or the like.
Access network (Access Network, be called for short AN), the network that is between UE and the AG and provides access service for UE comprises wireless access network and wired access network.
Application server (Application Server, be called for short AS) provides third party service provider/content supplier's (Service Provider/Content Provider is called for short SP/CP) server of application service for the user.
WAP (wireless application protocol) (Wireless Application Protocol is called for short WAP) gateway: realize operations such as protocol conversion.
Network address translation (Network Address Translation is called for short NAT) equipment, the function of realization network address translation.
Generic route encapsulation (Generic Routing Encapsulation is called for short GRE) has defined the agreement that encapsulates any one other network layer protocol on a kind of network layer protocol.
There are the following problems for the data service network system of prior art:
1) GRE packaging efficiency and bandwidth constraints problem: under this programme, Business Stream is essential will be through the encapsulation and the decapsulation of gre tunneling.And present gre tunneling endpoint router poor-performing, therefore when the big data on flows of user's frequent access in future was professional, the gre tunneling endpoint router will become the performance bottleneck of the whole network.In addition, own professional (as streaming media service etc.) flow is huge, therefore also very high to bandwidth demand.And under this programme, can obviously be subjected to the restriction of GRE router side port band width for the bandwidth that Business Stream uses.
2) NAT performance bottleneck problem: the terminal distribution private IP address, and application server is positioned on the public network, uses public ip address, then the terminal access server need carry out NAT.Obviously, NAT device will become the performance bottleneck of the whole network.Especially the New Deal of new business introducing is difficult to passing through NAT, own data service in the future, such as streaming media service, use real-time streaming protocol (Real-Time StreamingProtocol, abbreviation RTSP), RTP (Real-time Transport Protocol, be called for short RTP) agreement, be difficult to passing through NAT.And because the new business flow is huge, the performance bottleneck problem of NAT device certainly will be more outstanding.
Summary of the invention
The access method that the purpose of this invention is to provide a kind of data service network system and data service with solution GRE packaging efficiency and bandwidth constraints problem, and is eliminated the performance bottleneck problem that NAT changes the whole network that brings.
For achieving the above object, the invention provides a kind of data service network system, comprise: IAD, Service Gateway, first border router, be connected with described IAD, be used for customer traffic is converged and classifies, and described user data sent to second border router by Virtual Private Network; Second border router is connected with described Service Gateway, and is connected with described first border router by described Virtual Private Network, is used for described user data is sent to described Service Gateway; Described Service Gateway comprises publicly-owned Service Gateway and own Service Gateway; Described publicly-owned Service Gateway and described own Service Gateway are by described second border router, respectively with different Virtual Private Network connections.
The present invention also provides a kind of access method of own data service, comprises the steps:
Steps A 2, described first border router are sent to second border router by Virtual Private Network with described packet;
Steps A 3, described second border router send to described own Service Gateway with described packet;
After steps A 4, described own Service Gateway are received described packet, judge whether described user terminal has this professional authority of visit, if the user has this professional authority of visit, then own Service Gateway sends own data traffic flow to user terminal; If the user does not have this professional authority of visit, then send refuse information to user terminal.
The present invention also provides a kind of access method of publicly-owned data service, comprises the steps:
Step B1, IAD receive the service request data bag of the publicly-owned service application service device of visit of user terminal transmission, and this packet is delivered to first border router corresponding with the user domain at this user place;
Step B2, described first border router are sent to second border router by Virtual Private Network with described packet;
Step B3, described second border router send to publicly-owned Service Gateway with described packet;
Step B4, described publicly-owned Service Gateway carry out protocol conversion and insert the user ID operation described packet;
Step B5, described publicly-owned Service Gateway send to described application server with described packet;
After step B6, described application server are received described packet, judge whether user terminal has this professional authority of visit, if user terminal has this professional authority of visit, then described application server is to the user terminal to transmit data Business Stream; If user terminal does not have this professional authority of visit, then return refuse information to user terminal.
As shown from the above technical solution,, make Business Stream, broken through the restriction of GRE packaging efficiency and bandwidth, and eliminated the performance bottleneck problem that NAT changes the whole network that brings without gre tunneling encapsulation and decapsulation by in the IP bearer network, introducing VPN.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the data service network system structural representation of prior art;
Fig. 2 is the schematic network structure of embodiments of the invention 1;
Fig. 3 is the signaling process figure of embodiments of the invention 2;
Fig. 4 is the signaling process figure of embodiments of the invention 3.
Embodiment
Referring to Fig. 2, it is the schematic network structure of embodiments of the invention 1, and in the present embodiment, related network element has:
(1) UE (user terminal) is the terminal equipment of initiating service request, comprises that various mobile phone terminals, intelligent terminal etc. are with information communication terminal equipment wired or that wireless mode inserts.
(2) AG (IAD) is sent to the network that bearer service uses (as TCP/IP network or network X.25) with user data, realizes the intercommunication between access network and the bearer service application network.AG can be GGSN, AC, ADSL, DSLAM, BRAS or the like.
(3) AN (access network), the network that is between UE and the AG and provides access service for UE comprises wireless access network and wired access network.
(4) Service Gateway (Service Gateway is called for short SG):, by service object, SG is broadly divided into following two classes:
Publicly-owned Service Gateway (Public Service Gateway, be called for short PSG): have the ability that the visit data business is provided for the user in the corresponding with it user domain, this gateway provides the ability of the publicly-owned business of visit (both third party SP/CP provided professional) for the user, mainly finish the publicly-owned concrete business function when professional of user capture, such as protocol conversion, insert function such as User Identity.Publicly-owned Service Gateway can be equipment such as WAP Gateway, MMSC.
Own Service Gateway (Self-owned Service Gateway, be called for short SSG): have the ability that the visit data business is provided for the user in the different user territory simultaneously, the ability of visit own professional (both operator provide data service) is provided for the user this gateway, mainly finish the concrete business function of user capture when own professional, such as functions such as inquiring user identify labels.Own Service Gateway can be equipment such as streaming media service server and IIC server.
(5) AS (application server):, for the user provides third party SP/CP server application service or upload Business Stream to SSG.
(6) IP bearer network: the special network of data stream being transmitted with the form of IP carrying, this network can provide abilities such as VPN function, QoS guarantee.
(7) PE (border router):, be positioned at the border of IP bearer network, be the most close user's equipment in the IP bearer network, customer traffic is converged and operation such as classification.
(8) territory (Domain):, each territory can be undertaken interconnected by INTERNET or IP bearer network.By the function difference, can be divided into:
User domain (User Domain) for example can be divided the user by the administrative region.Can comprise equipment such as UE, AG in the user domain.
SSG territory (SSG Domain) mainly comprises SSG equipment in the SSG territory, for the user provides own data service.
The concrete networking mode of present embodiment is as follows:
(1) distribution of the division in territory and each domain addresses:
The user is divided in each user domain, simultaneously SSG equipment is divided in the SSG territory.
For distributing the address in each territory, as under the IPv4 background:
UE devices allocation address is in the user domain A: 10.1.X.X;
UE devices allocation address is in the user domain B: 10.2.X.X;
The devices allocation address is in the SSG territory: 10.100.X.X;
(2) connection of PSG equipment:
Corresponding each user domain configuration one cover PSG equipment inserts PSG equipment in the IP bearer network; Meanwhile PSG equipment inserts INTERNET through fire compartment wall and NAT address-translating device.Realize the user data IP bearer network of flowing through, behind the visit PSG equipment, the application server on NAT address-translating device visit INTERNET.
(3) connection of SSG equipment:
For SSG devices allocation public network IP address, SSG equipment is connected into INTERNET through fire compartment wall, the public network interface of open SSG equipment makes things convenient for CP/SP to upload Business Stream; Meanwhile, SSG equipment is connected in the IP bearer network, and is divided in the specific private network network segment.
(4) connection of AG equipment
The user is divided in each user domain, uses private IP address.And with AG equipment by drawing modes such as special line or tunnel encapsulation, be connected to corresponding PE node.
(5) set up VPN (Virtual Private Network):
In the IP bearer network, make up VPN, respectively user domain, SSG territory and PSG equipment are inserted the IP bearer network.Because some PSG equipment (as WAP gateway) address is set as definite value at present, unusual for preventing that network from occurring, not intercommunication routing iinformation between necessary control PSG equipment and the SSG territory.Therefore in the IP bearer network, the following restriction that shows effect of the branch of routing iinformation:
Routing iinformation to user in each user domain is done following control: control not intercommunication routing iinformation between each user domain.Be the routing iinformation of user among the user domain A, do not declare to user domain B; User's routing iinformation among the user domain B is not declared to user domain A.
The routing iinformation of each SG equipment is done following control: control not intercommunication routing iinformation between each PSG equipment, not intercommunication of the equipment routing iinformation in each PSG equipment and the SSG territory.The routing iinformation of promptly corresponding with user domain A PSG equipment is not declared to the PSG equipment corresponding with user domain B; The routing iinformation of the PSG equipment corresponding with user domain B is not declared to the PSG equipment corresponding with user domain A.Meanwhile, the routing iinformation of each PSG equipment is not declared the territory to SSG; The routing iinformation of equipment in the SSG territory is not declared to each PSG equipment.
Routing iinformation between user in each user domain and each the SG equipment is done following control: control SSG territory and each user domain intercommunication routing iinformation; The user domain intercommunication routing iinformation that each PSG equipment is only corresponding with it.Realize that corresponding with it the respectively PSG equipment of each user domain communicates, meanwhile can also communicate with equipment in the SSG territory.
Can adopt following method to make up VPN in the present embodiment: as shown in Figure 2, publicly-owned Service Gateway and described private service gateway are by border router, respectively with different Virtual Private Network connections.Make not intercommunication routing iinformation between publicly-owned Service Gateway and the private service gateway like this; Each publicly-owned Service Gateway also connects different Virtual Private Network (as VPN1 among the figure and VPN3) respectively, to realize not intercommunication routing iinformation between the publicly-owned Service Gateway.
In addition in the Virtual Private Network that is connected with a plurality of IADs (VPN2 in as figure), route control information (the control information content is for forbidding intercommunication routing iinformation between described a plurality of user domain) is set, Virtual Private Network carries out route control according to described route control information to described a plurality of IADs, makes not intercommunication routing iinformation between a plurality of user domain.Specifically can adopt multiple implementation method.Such as utilizing RT (RouteTarget, route target) attribute among MPLS (Multi-Protocol Label Switching, the multi protocol label exchange) VPN, the distribution of routing iinformation between each PE node is controlled.
This shows, by in the IP bearer network, making up VPN, make to the management between the management between the user domain and user domain and SSG territory, the PSG territory more flexible.
Embodiment 2
Referring to shown in Figure 3, it is the signaling process figure of embodiments of the invention 2, and present embodiment has been described the flow process of the publicly-owned data service of user terminal access:
Step 1a, user terminal (UE) send the service request data bag of the publicly-owned service application service device of visit to AG equipment.
Step 1b, be visit to publicly-owned business by this service request of AG device discovery, AG equipment is delivered to the PE equipment corresponding with this user domain by methods such as special line or tunnel encapsulation with this packet.
Step 1c, user side PE equipment through this user place VPN in the IP private network, are delivered to PSG side PE equipment with packet.
Step 1d, PSG side PE equipment are transmitted to this packet the PSG equipment of this user's correspondence.
Step 1e, carry out protocol conversion and insert operations such as user ID by PSG equipment.
Step 1f, PSG equipment are delivered to the NAT address-translating device with the service request from user packet, finish NAT address transition to packet after, deliver to the user through INTERNET and to ask the publicly-owned service application service device of visiting.So far, UE has set up with AS and has been connected.
Step 1g, AS receive the customer service request data package, according to the user profile in the packet, finish user identity, and the inquiry of order relations etc., judge whether the user has this professional authority of visit.If the user has this professional authority of visit, then service server directly sends publicly-owned data traffic flow to the user; If the user does not have this professional authority of visit, then send refuse information to the user.
Step 1i, carry out operations such as protocol conversion by PSG equipment.
Step 1j, PSG equipment are sent into the PSG side PE equipment of IP bearer network.
VPN route in step 1k, the process IP bearer network is delivered to user side PE equipment.
The response data packet that step 1m, AG equipment return AS sends to user terminal (UE).
Embodiment 3
Referring to shown in Figure 4, it is the signaling process figure of embodiments of the invention 3, and present embodiment has been described the flow process of the own data service of user terminal access:
Step 2a, user terminal (UE) send the service request data bag of the own business platform of visit to AG equipment.
Step 2b, be to own professional visit by this service request of AG device discovery, AG equipment is delivered to the PE equipment corresponding with this user domain by methods such as special line or tunnel encapsulation with this packet.
Step 2c, user side PE equipment through this user place VPN in the IP bearer network, are delivered to SSG side PE equipment with packet.
Step 2d, SSG side PE equipment are forwarded to the user with packet and ask the SSG equipment of visiting.So far, UE has set up with SSG equipment and has been connected.
Step 2e, SSG equipment are received the customer service request data package, according to the information such as IP address in the packet, finishes user identity, and the inquiry of order relations etc., judge whether the user has this professional authority of visit.If the user has this professional authority of visit, then SSG equipment directly sends own data traffic flow to the user; If the user does not have this professional authority of visit, then send refuse information to the user.
Step 2f, SSG equipment are sent to SSG side PE equipment in the IP bearer network with response data packet.
Step 2g, SSG side PE equipment are sent to response data packet by VPN the PE equipment of user side.
The PE equipment of step 2h, user side is sent to AG equipment with response data packet.
The response data packet that step 2i, AG equipment return AS sends to user terminal (UE).
As shown from the above technical solution,, make Business Stream, broken through the restriction of GRE packaging efficiency and bandwidth, and eliminated the performance bottleneck problem that NAT changes the whole network that brings without gre tunneling encapsulation and decapsulation by in the IP bearer network, introducing VPN.In addition, the present invention has realized that also own Service Gateway is for the user access in the different user territory, and need not own Service Gateway is disposed according to each user domain, solved in the network of a plurality of user domain coexistence the problem that each user domain can't the common business gateway.
It should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not limit it, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solution of the present invention.
Claims (5)
1. data service network system comprises: IAD, and Service Gateway is characterized in that, also comprises:
First border router is connected with described IAD, is used for customer traffic is converged and classifies, and by Virtual Private Network described user data is sent to second border router;
Second border router is connected with described Service Gateway, and is connected with described first border router by described Virtual Private Network, is used for described user data is sent to described Service Gateway;
Described Service Gateway comprises publicly-owned Service Gateway and own Service Gateway;
Described publicly-owned Service Gateway and described own Service Gateway are by described second border router, respectively with different Virtual Private Network connections.
2. system according to claim 1, it is characterized in that, with Virtual Private Network that a plurality of IADs are connected in, be provided with the route control information, described Virtual Private Network carries out route control according to described route control information to described a plurality of IADs, and described route control information is for forbidding intercommunication routing iinformation between a plurality of user domain.
3. the access method of an own data service is characterized in that, comprises the steps:
Steps A 1, IAD receive the service request data bag of the own Service Gateway of visit of user terminal transmission, and this packet is delivered to first border router corresponding with the user domain at this user place;
Steps A 2, described first border router are sent to second border router by Virtual Private Network with described packet;
Steps A 3, described second border router send to described own Service Gateway with described packet;
After steps A 4, described own Service Gateway are received described packet, judge whether described user terminal has this professional authority of visit, if the user has this professional authority of visit, then own Service Gateway sends own data traffic flow to user terminal; If the user does not have this professional authority of visit, then send refuse information to user terminal.
4. the access method of a publicly-owned data service is characterized in that, comprises the steps:
Step B1, IAD receive the service request data bag of the publicly-owned service application service device of visit of user terminal transmission, and this packet is delivered to first border router corresponding with the user domain at this user place;
Step B2, described first border router are sent to second border router by Virtual Private Network with described packet;
Step B3, described second border router send to publicly-owned Service Gateway with described packet;
Step B4, described publicly-owned Service Gateway carry out protocol conversion and insert the user ID operation described packet;
Step B5, described publicly-owned Service Gateway send to described application server with described packet;
After step B6, described application server are received described packet, judge whether user terminal has this professional authority of visit, if user terminal has this professional authority of visit, then described application server is to the user terminal to transmit data Business Stream; If user terminal does not have this professional authority of visit, then return refuse information to user terminal.
5. method according to claim 4, it is characterized in that, described step B5 is specially: described publicly-owned Service Gateway is sent to network address translation apparatus with described packet, described network address translation apparatus is sent to publicly-owned service application service device through the internet after described packet is carried out network address translation.
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| CN101489259B (en) * | 2009-02-24 | 2011-03-02 | 中兴通讯股份有限公司 | Data service handling method, system and access network |
| CN102036227B (en) * | 2009-09-27 | 2013-11-06 | 中国移动通信集团公司 | Method, system and device for acquiring user identifier of data service |
| CN102006337B (en) * | 2010-11-23 | 2013-12-18 | 华为技术有限公司 | CGN (Carrier Grade NAT) entity based data transmission method, CGN entity, gateway and system |
| CN103259791B (en) * | 2013-04-28 | 2016-03-09 | 华为技术有限公司 | One passes through communication route selecting method, terminal and system |
| CN107395676B (en) * | 2017-06-16 | 2021-01-26 | 深圳市盛路物联通讯技术有限公司 | Method and system for managing equipment in edge network |
| CN109728982B (en) * | 2017-10-27 | 2022-01-14 | 北京乾唐视联网络科技有限公司 | Network access method and system for autonomous cloud in autonomous network |
| CN108566644A (en) * | 2018-03-20 | 2018-09-21 | 中国科学院计算机网络信息中心 | A kind of garden network service method for sinking based on MEC |
| CN110740287B (en) * | 2018-07-20 | 2021-07-20 | 视联动力信息技术股份有限公司 | Data processing method and device for autonomous network |
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