CN102970351B - A kind of method and device positioned based on CDN and the user of the network integration - Google Patents

Abstract

The present invention discloses a user positioning method and device based on the fusion of CDN and network. The method includes: integrating CDN nodes of a CDN system with network equipment to form a fusion equipment. The fusion equipment includes CDN components and network components. In addition, a local DNS server is deployed on the fusion device; a DNS record containing the contracted ICP/ISP domain name and the external service address of the CDN component of the fusion device as the address corresponding to the domain name is generated, and/or a DNS record containing the address of the local DNS server and the CDN of the fusion device is generated. The address relationship record of the corresponding relationship of the external service address of the component; when the client initiates a DNS resolution request, use the DNS record or address relationship record to obtain the DNS resolution result returned to the client, so that the client can use the DNS resolution result according to the resolution As a result, an application link is established with the CDN component of the fusion device, thereby realizing user positioning from the user terminal to the CDN component of the fusion device.

Description

A method and device for user positioning based on CDN and network integration

technical field

The present invention relates to a communication network, a CDN (Content Delivery Network), a business management system, a related system of a content provider, and a DNS system. When bearer, the system locates the user's method and device, and selects a suitable service node for the user.

Background technique

The rapid development of Internet services, especially the development of video services, makes service providers need a large number of CDN services to improve the service quality of Internet services; it brings about the large-scale development of CDN; but because the current CDN system cannot perceive and control the network Therefore, the user experience of Internet services cannot be truly guaranteed.

The service quality assurance of Internet business needs to be guaranteed from two aspects: content and network, and requires CDN and network equipment to implement protection for users' Internet applications at the same time. The CDN can only provide application-level guarantees, and the network can only provide bandwidth and quality guarantees at the network layer. Only when CDN equipment and network equipment can be integrated can we implement guarantees in terms of content and network, thereby improving user experience.

After the integration of CDN and network equipment, users need to be positioned and resources scheduled when specific services are carried. It is necessary to allocate corresponding resources and corresponding service nodes for each user. In principle, the user's content service nodes and network The service nodes are on the same device to achieve better coordination and maximize the advantages of converged devices.

Contents of the invention

The purpose of the present invention is to provide a user positioning method based on the integration of CDN and network equipment, and realize user positioning by combining CDN and network together.

Another object of the present invention is to provide an apparatus for implementing the above method.

According to the first aspect of the present invention, a user positioning method based on content distribution network CDN and network integration of the present invention includes the following steps:

By merging the CDN node of the CDN system with the network device, a fusion device is formed, the fusion device includes a CDN component and a network component, and a local DNS server is deployed on the fusion device;

Generate a DNS record containing the contracted ICP/ISP domain name and the external service address of the CDN component of the fusion device as the corresponding address of the domain name, and/or generate an address relationship record containing the correspondence between the local DNS server address and the external service address of the CDN component of the fusion device;

When the client initiates a DNS resolution request, use the DNS record or address relationship record to obtain the DNS resolution result returned to the client, so that the client can establish an application link with the CDN component of the fusion device according to the resolution result , so as to realize the user positioning from the user terminal to the CDN component of the fusion device.

Preferably, the network component is used to provide network access and bearer services to the user end, and the fusion device further includes a main control unit used to serve the CDN component and the network component.

Preferably, the generating of DNS records includes: the CDN central management system issues an instruction to the CDN component of the fusion device including the domain name information of the contracted ICP/ISP; and the CDN component of the fusion device requests the local DNS server for the contracted domain name information according to the domain name information in the command The domain name of the ICP/ISP generates the DNS record; wherein, the domain name in the DNS record is the domain name of the contracted ICP/ISP, and the corresponding address is the external service address of the CDN component of the fusion device.

Preferably, using the DNS record to obtain the DNS resolution result includes: the local DNS server queries the DNS record in the local cache according to the received DNS resolution request from the user, and searches the DNS record corresponding to the contracted ICP/ISP domain name The external service address of the CDN component of the fusion device returns to the client.

Preferably, the generation of the address relationship record includes: the network component or the main control unit of the fusion device notifies the CDN component of the local DNS server to the CDN component of the fusion device; the CDN component of the fusion device generates information about the local DNS server The address relationship record of the corresponding relationship between the address and the external service address of the CDN component of the fusion device, and report it to the domain name system resource scheduling and load balancing system DNS GSLB of the CDN central management system.

Preferably, using the address relationship record to obtain the DNS resolution result includes: the local DNS server sends the client's DNS resolution request to the DNS GSLB; the DNS GSLB queries the corresponding domain name record in its DNS resolution request domain name; after querying the corresponding domain name, according to the corresponding relationship between the local DNS server address in the address relationship record and the external service address of the CDN component of the fusion device, the corresponding CDN component of the fusion device is determined as the CDN service node, and will contain its The resolution result of the address is returned to the client via the local DNS server.

Preferably, said using said address relationship record to obtain the DNS resolution result includes: the local DNS server sends the DNS resolution request of the client to the DNS root server, and authorizes the DNS to the ICP/ISP according to the returned ICP/ISP authorization DNS information. The server initiates a DNS query request; the local DNS server initiates a DNS query request to the DNS GSLB according to the DNS information of the used CDN service system returned by the ICP/ISP authorized DNS server in response to the query request; the DNS GSLB initiates a DNS query request according to the DNS query request , query the corresponding DNS record, and according to the corresponding relationship between the local DNS server address in the address relationship record and the external service address of the CDN component of the fusion device, determine the corresponding CDN component of the fusion device as the CDN service node, and include the resolution of its address The result is returned to the client via the local DNS server.

According to the second aspect of the present invention, a user positioning device based on CDN and network integration of the present invention includes:

The DNS record generation unit of the fusion device is used to generate a DNS record containing the contracted ICP/ISP domain name and the external service address of the CDN component of the fusion device as the address corresponding to the domain name, or containing the address of the local DNS server corresponding to the external service address of the CDN component of the fusion device the relationship's address relationship record;

A DNS resolution device, configured to use the DNS record or address relationship record to obtain a DNS resolution result to be returned to the client when a DNS resolution request is initiated by the client, so that the client can combine the resolution result with the The device CDN component establishes an application link, thereby realizing user positioning from the user end to the converged device CDN component;

Wherein, the fusion device is a device that integrates a CDN node and a network device, including: the local DNS server; and the CDN component of the fusion device, which is used to establish and maintain an application link with the client and provide content distribution Serve.

Preferably, the fusion device further includes a network component for providing network access and bearer services to the client; wherein, an internal signaling interaction interface is provided between the network component and the CDN component of the fusion device, so that the network component Report the user address pool information to the CDN component, and the CDN component applies to the network component for user network acceleration, receives and executes feedback information, user status query and feedback information.

Preferably, the fusion device further includes: a main control unit for serving CDN components and network components; wherein, the main control unit is respectively provided with an internal signaling interaction interface between the CDN components and the network components; wherein, The local DNS server is started by the main control unit, or by a network component.

Preferably, the DNS record generation unit of the fusion device is composed of the local DNS server and the CDN component of the fusion device; wherein, the CDN component of the fusion device requests the local DNS server for the domain name of the contracted ICP/ISP according to the domain name information in the instruction generating the DNS record; and the CDN component of the fusion device generates the address relationship record according to the address information of the local DNS server notified by the network component or the main control unit of the fusion device.

Preferably, the DNS resolution device is either a local DNS server performing local resolution in the fusion device, or a DNS GSLB performing domain name resolution in the CDN central management system.

On the other hand, the integration of CDN and network equipment in the present invention includes the following content:

Integrate the content distribution nodes and network equipment of the CDN system as components of the network equipment; CDN components and network components are loosely coupled;

The central management system of the CDN is reserved for centralized deployment, and manages and monitors the CDN components of each fusion device in a unified manner; in addition, the GSLB, DNS resolution and other components of the CDN system are also deployed in a unified manner with the central management system; the above systems can also be integrated with the network management of the fusion equipment System unified integration and deployment;

The CDN component provides CDN services to users and maintains the content service status of users;

Network components provide users with network access and bearer services, and are responsible for maintaining the user's network service status;

The network component opens the DNS service as a local DNS resolution server (the specific implementation can also be opened by the main control board of the device);

Add an internal interface for interaction between CDN components and network components or device masters, issue corresponding DNS configurations, obtain DNS server information, etc.;

The CDN component adds the function of generating a corresponding relationship record between the local DNS server address of the fusion device and the CDN service address, and reporting the function to the GSLB system of the CDN center.

Compared with the prior art, the technical effect of the present invention is: adapting to different deployment modes and business scenarios, meeting the requirement of locating the user's network layer connection and application layer connection to the same converged device, and better guaranteeing user service experience.

The structure and principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the system networking diagram of CDN and network fusion equipment of the present invention;

Fig. 2 is the internal structural diagram of CDN and network fusion equipment of the present invention;

FIG. 3 is a schematic diagram of the user positioning method based on CDN and network integration of the present invention;

FIG. 4 is a schematic diagram of a user positioning device based on CDN and network integration of the present invention;

FIG. 5 is a flow chart of the first embodiment of user positioning based on CDN and network integration of the present invention;

Fig. 6 is the flow chart of the second embodiment of the user positioning based on CDN and network integration of the present invention;

Fig. 7 is a flow chart of the third embodiment of the user positioning based on CDN and network integration of the present invention.

detailed description

The CDN and network fusion system and equipment of the present invention, as well as the user positioning method for implementing service bearer based on the fusion equipment of the present invention, will be described in detail below with reference to the accompanying drawings.

. Fig. 1 shows the system network diagram of the present invention, CDN and network fusion equipment. From the perspective of the system, CDN and network fusion equipment can be deployed in a distributed manner, but a central management system is required to implement unified management and scheduling, and implement unified content management, business monitoring, network management, DNS resolution, resource scheduling and load balancing Wait.

The central management system of the CDN adopts a centralized deployment method, and is deployed in a unified manner with the DNS server, resource scheduling and load balancing system (GSLB), and manages and maintains the CDN components in each converged device, adapts services, and schedules resources; it can Deployed as an independent system, it can also be integrated with the network management system of the converged device. As a component of the network management system, it can be deployed in a unified manner with the network management system.

Converged equipment, which integrates CDN functions and network functions, uses CDN components as content distribution nodes to provide users with content distribution services; uses network components to provide users with network access and bearer services.

The CDN components and the central management system of the CDN establish management channels and business channels, and use the management channels to realize the daily maintenance and management of the network, configuration and monitoring of equipment, etc.; use the business channels to realize content distribution and business information interaction.

From the perspective of networking, CDN can be integrated with core routers, service routers (BRAS/SR), switches, PDSN/GGSN and other equipment on the network. Since BRAS/SR and PDSN/GGSN are the service control points of Internet users and have user network status information, it is recommended that CDN equipment integrate with BRAS/SR and PDSN/GGSN equipment, so as to realize the coordination of CDN user status and network user status. User status coordination and policy scheduling can achieve dual guarantees based on user application content and network service quality, thereby improving user experience.

Fig. 2 shows the general internal structure diagram of the present invention, CDN and network fusion equipment. In the present invention, the new CDN and network fusion equipment integrates the content distribution nodes and network equipment of the CDN, and adopts a loose coupling method for integration. The CDN components adopt an independent CDN service processing board type, and the network components also adopt an independent network Business processing board type; thus greatly reducing the complexity of integration, but also improving the scalability and flexibility of the system. Network components or CDN components can be expanded according to specific business needs.

Inside the system, it is necessary to increase the internal interaction interface between the CDN component and the network component, which is mainly used for the direct interaction between the network component and the CDN component. For example: the CDN component applies to the network component for user network acceleration and receives execution feedback information, the user's network status query and feedback, etc.

At the same time, the CDN components and network components also have corresponding internal interfaces with the main control unit to realize management and business interaction; for example, the CDN service board obtains the corresponding configuration policy from the CDN management center, and needs to feed back to the main control card, which is determined by The main control card realizes the configuration and implementation of the device; the main control card also needs to apply the corresponding configuration to the specific network service processing board and so on.

In the present invention, in order to locate the network layer connection and application layer link of the same user on the same fusion device, it is necessary to enable the local DNS service on the main control unit or network processing board of the fusion device. In order to provide users with CDN services, the CDN business processing board needs to enable the CDN service and publish the CDN external service address; how to schedule and locate the application link of a network user connected to a specific converged device in the device The CDN component is the focus of the present invention, and all components of the fusion device need to interact and cooperate accordingly through internal interfaces.

Fig. 3 has shown a kind of user location method based on CDN shown in Fig. 1 and Fig. 2 and the network fusion of the present invention, as shown in Fig. 3, comprises:

Step S301: A fusion device is formed by merging the CDN nodes of the CDN system with network devices, the fusion device includes CDN components and network components, and a local DNS server is deployed on the fusion device;

Step S302: The local DNS server generates a DNS record containing the contracted ICP/ISP domain name and the external service address of the CDN component of the fusion device as the address corresponding to the domain name, and/or the CDN component of the fusion device generates a DNS record containing the address of the local DNS server and the fusion The address relationship record of the external service address correspondence of the equipment CDN component and report it to the DNS GSLB of the CDN center;

Step S303: When the client initiates a DNS resolution request, the local DNS server uses the DNS record or the DNS GSLB uses the address relationship record to obtain the DNS resolution result returned to the client, so that the client can The analysis result establishes an application link with the CDN component of the fusion device, so as to realize user positioning from the user terminal to the CDN component of the fusion device.

In step S301, the network component is used to provide network access and bearer services to the client, and the converged device further includes a main control unit used to serve the CDN component and the network component.

The generation of DNS records described in step S302 includes: the CDN central management system issues an instruction to the CDN component of the fusion device that includes the domain name information of the contracted ICP/ISP; and the CDN component of the fusion device requests the local DNS server for the contracted The domain name of the ICP/ISP generates the DNS record; wherein, the domain name in the DNS record is the domain name of the contracted ICP/ISP, and the corresponding address is the external service address of the CDN component of the fusion device.

Obtaining the DNS resolution result by using the DNS record in step S302 includes: the local DNS server queries the DNS record in the local cache according to the received DNS resolution request from the user, and searches the DNS record corresponding to the contracted ICP/ISP domain name The external service address of the CDN component of the fusion device returns to the client.

The generation of address relationship records described in step S302 includes: the fusion device network component or the main control unit notifies the fusion device CDN component of the address of the local DNS server; the fusion device CDN component generates information about the local DNS server according to the information in the notification. The address relationship record of the corresponding relationship between the address and the external service address of the CDN component of the fusion device, and report it to the domain name system resource scheduling and load balancing system DNS GSLB of the CDN central management system.

Obtaining the DNS resolution result by using the address relationship record in step S303 includes: the local DNS server sends the DNS resolution request of the client to the DNS GSLB; the DNS GSLB queries the domain name record for the corresponding domain name; after querying the corresponding domain name, according to the corresponding relationship between the local DNS server address in the address relationship record and the external service address of the CDN component of the fusion device, the corresponding CDN component of the fusion device is determined as the CDN service node, and will contain its The resolution result of the address is returned to the client via the local DNS server.

Obtaining the DNS resolution result by using the address relationship record described in step S303 includes: the local DNS server sends the DNS resolution request of the client to the DNS root server, and authorizes the DNS to the ICP/ISP according to the returned ICP/ISP authorization DNS information. The server initiates a DNS query request; the local DNS server initiates a DNS query request to the DNS GSLB according to the DNS information of the used CDN service system returned by the ICP/ISP authorized DNS server in response to the query request; the DNS GSLB initiates a DNS query request according to the DNS query request , query the corresponding DNS record, and according to the corresponding relationship between the local DNS server address in the address relationship record and the external service address of the CDN component of the fusion device, determine the corresponding CDN component of the fusion device as the CDN service node, and include the resolution of its address The result is returned to the client via the local DNS server.

Figure 4 shows a device for user positioning based on CDN and network integration of the present invention, as shown in Figure 4, including:

The DNS record generation unit of the fusion device is used to generate a DNS record containing the contracted ICP/ISP domain name and the external service address of the CDN component of the fusion device as the address corresponding to the domain name, or containing the address of the local DNS server corresponding to the external service address of the CDN component of the fusion device the relationship's address relationship record;

A DNS resolution device, configured to use the DNS record or address relationship record to obtain a DNS resolution result to be returned to the client when a DNS resolution request is initiated by the client, so that the client can combine the resolution result with the The device CDN component establishes an application link, thereby realizing user positioning from the user end to the converged device CDN component;

Wherein, the fusion device is a device that integrates a CDN node and a network device, including: the local DNS server; and the CDN component of the fusion device, which is used to establish and maintain an application link with the client and provide content distribution Serve.

The fusion device also includes: a network component for providing network access and bearer services to the client; wherein, an internal signaling interaction interface is provided between the network component and the CDN component of the fusion device, so that the network component can send the CDN The component reports the information of the user address pool, and the CDN component applies to the network component for user network acceleration, receives and executes feedback information, user status query and feedback information.

The fusion device also includes: a main control unit for serving CDN components and network components; wherein, the main control unit is respectively provided with an internal signaling interaction interface with the CDN components and between the network components; wherein, the The local DNS server is started by the main control unit, or by the network components.

The DNS record generating unit of the fusion device is composed of the local DNS server and the CDN component of the fusion device; wherein, according to the domain name information in the instruction, the CDN component of the fusion device requests the local DNS server to generate the domain name of the contracted ICP/ISP. and the CDN component of the fusion device generates the address relationship record according to the address information of the local DNS server notified by the network component of the fusion device or the main control unit.

Wherein, the DNS resolution device is either a local DNS server performing local resolution in the fusion device, or a DNS GSLB performing domain name resolution in the CDN central management system.

The present invention will be further described below in conjunction with three embodiments of user positioning based on CDN and network integration shown in FIG. 5 , FIG. 6 and FIG. 7 .

Fig. 5 shows the flowchart of the first embodiment of the user positioning based on CDN and network integration of the present invention. In this embodiment, the systems involved include: user client, fusion device, CDN central management system/DNS/GSLB, service management system, and ICP/ISP system.

In the present invention, after the ICP/ISP signs up to use CDN and network services, the CDN central management system issues user positioning and scheduling policies to the corresponding fusion device according to the policy, and adds DNS records for the ICP/ISP locally on the fusion device. Set the service node as a local CDN component; when a user initiates an access request, the analysis result is directly obtained locally on the corresponding fusion device, and the user is positioned on the local CDN service node.

The business implementation steps are as follows:

1. In this scenario, converged equipment is used to provide users with network bearer and CDN services at the same time. In addition to the corresponding CDN center management system to manage the equipment, there is also a corresponding business management system to realize business management and business Accept etc. Target customers, such as: ICP/ISP who want to purchase and select the corresponding CDN service, can apply for CDN service through the service provider's business management system;

2. The business management system will inquire about the corresponding resources; if it is confirmed that the service requirements of the user can be met, the business will be accepted, and the business acceptance confirmation information will be returned to the ICP/ISP;

3. After the business is successfully accepted, the business management system issues a business deployment command to the CDN central management system; in this method, it is mainly considered to realize the positioning of the user's CDN service through the domain name information of the ICP/ISP; The central management system/DNS/GSLB issues the domain name information of the ICP/ISP, and implements the requirements for user CDN service positioning based on the domain name information;

4. The CDN central management system issues the user positioning strategy for the ICP/ISP to the CDN components of each fusion device; the specific instruction content includes the domain name information of the contracted ICP/ISP and the requirements for local resolution based on the domain name information;

5. The fusion device has enabled the DNS service in advance, and the DNS server is started by the main control unit of the fusion device (it can also be started by the network service processing board, but it is not recommended). After receiving the user location policy issued by the CDN central management system, the CDN component of the fusion device passes the internal interface between the CDN component and the main control unit of the fusion device according to the domain name information in the command (when the DNS server is started by the network processing board , through the internal interface between the CDN component and the network component), request the DNS server to generate a corresponding DNS record for the domain name of the contracted ICP/ISP, the domain name in the record is the domain name of the contracted ICP/ISP, and the corresponding address is The external service address of the CDN component of the fusion device;

6. After the domain name record is successfully added, the main control unit (or network component) of the fusion device returns a domain name record addition success message to the CDN component of the fusion device;

7. The CDN component of the fusion device receives the domain name record addition success message, and returns the user location policy execution success message of the contracted ICP/ISP to the CDN central management system;

8. The CDN central management system, after receiving the user location strategy execution success message returned by all the CDN components of the fusion device, feeds back to the service management system that the service has been deployed.

So far, the deployment and implementation of the first embodiment of the present invention has been completed. The following is a simple process description for user business access.

1. The user has access to the business application and sends a DNS request, such as: www.sohu.com ;

2. The user's network connection is first connected to the fusion device. The fusion device opens the DNS server. When the user establishes a network connection, the fusion device is the user connected to it, and the DNS server address assigned is the address of the local DNS server; the local DNS server is used. The DNS server provides users with domain name resolution services. When receiving a DNS request from a user, first check the local DNS cache, for example: the domain name www.sohu.com requested by the user is a contracted ICP/ISP, then through the previous deployment, the local DNS server has a corresponding DNS record, and the record corresponds to The address of is the external service address of the local CDN component; after the query is found, the query result is returned to the user client;

3. After obtaining the query result, the user client establishes an application layer link with the CDN component of the fusion device according to the address information in the result, and requests content services.

The feature of this embodiment is that, according to the domain name of the contracted ICP/ISP and the external service address of the CDN component of the fusion device, a corresponding record is formed, and the corresponding DNS record is added in the local DNS server, and the DNS request of the user can be obtained in the local DNS server parse the result. It is suitable for contracted customers and closed businesses. This embodiment has high DNS query efficiency and distributed resolution, which helps reduce the pressure on the central DNS resolution server.

Fig. 6 shows a flow chart of the second embodiment of the user positioning based on CDN and network integration of the present invention. In this embodiment, the systems involved mainly include: user client, fusion device, CDN center management system/DNS/GSLB, business management system, ICP/ISP system, etc.

In the present invention, after the ICP/ISP signs up to use the CDN and network services, the GSLB of the CDN center system will increase the DNS record of the ICP/ISP and maintain it uniformly; when the user initiates an access request, the DNS record cannot be found locally at the fusion device. The request will be made to the central GSLB, and GSLB will determine the CDN service address serving the user based on the relationship between the DNS service address and the CDN service address, combined with the scheduling strategy, and return the analysis result; locate the user on the local CDN service node.

The specific implementation steps are as follows:

1. ICP/ISP wants to choose CDN service and apply for CDN service from the business management system;

2. After the business management system accepts the ICP/ISP business request, it issues a CDN service activation command to the CDN central management system; Analysis and load balancing scheduling; therefore, the instruction contains the domain name information of the contracted ICP/ISP and related instructions for local resolution based on the domain name; after receiving the service activation instruction, the CDN central management system will Add the domain name record corresponding to the ICP/ISP in the DNS GLSB, and reserve relevant resources according to the needs of business development; after the deployment is completed, return the CDN service deployment completion message to the business management system;

3. After receiving the CDN service deployment completion message, the service management system returns an order confirmation message to the ICP/ISP system.

In actual implementation, fusion devices need to cooperate accordingly. The fusion device needs to enable the DNS service (it can be enabled by the main control unit or the network service processing board, it is recommended that the main control unit be enabled); the component that enables the DNS service notifies the local DNS server address to the CDN component through the internal interface; the CDN component After receiving the notification message, generate the corresponding relationship record between the local DNS server address and the local CDN external service address, and notify the CDN central management system through the CDN components and the management interface of the CDN central management system, and the CDN central management system will send it to DNS GSLB. Use this as the basis for locating users and balancing loads.

Now that the business deployment is complete, the following are the processing steps for user business access:

1. When the user client needs to access the business and initiate a business request, it first needs to perform DNS resolution;

2. Since the fusion device has enabled the DNS service, after receiving the DNS request, it queries the local cache, and if there is no corresponding cache record, it requests resolution from the upper-level DNS server; in this embodiment, the DNS servers of the fusion device all Set the DNS GSLB of the CDN center as the upper-level DNS server;

3. The DNS GSLB of the CDN center performs DNS resolution. If the corresponding cache record cannot be found, it needs to query the DNS server at the next level; but for the domain name of the contracted ICP/ISP, according to the previous deployment, it is already in the local The corresponding domain name record has been added, which can be queried in the cache; after the corresponding domain name is queried, it is resolved according to the correspondence between the local DNS server address and the CDN external service address reported by the CDN components of each fusion device (based on this correspondence The relationship locates the user back to the local CDN, ensures that the user's network connection and application layer link are in the same fusion device), and returns the resolution result to the local DNS server;

4. After receiving the analysis result, the local DNS server of the fusion device returns the analysis result to the user client;

5. The user client establishes an application layer link based on the CDN service address returned by DNS resolution, and requests content services.

The feature of this embodiment is that the DNS GSLB of the CDN center adds the DNS record of the contracted ICP/ISP, and locates the user according to the corresponding relationship between the DNS server and the CDN service address reported by each CDN component. The fusion device needs to enable the DNS server and designate the upper-level DNS server as the DNS GSLB of the CDN center. The CDN component needs to form a corresponding relationship record based on the DNS server address of the fusion device and its own external CDN service address, and report it to the DNSGSLB of the CDN center as the basis for user positioning; this embodiment is more suitable for signing ICP/ISP, and a relatively closed business. At the same time, adopting the CDN center DNS GSLB centralized cache record method can reduce the need to add DNS records to each converged device during the initial deployment of the business, which has high deployment efficiency and is easier to manage and maintain.

Fig. 7 shows a flow chart of the third embodiment of the user positioning based on CDN and network integration of the present invention. In this embodiment, the systems involved mainly include: user client, fusion device, CDN central management system/DNS/GSLB, DNS root server, and ISP authorized DNS server.

In the present invention, a deployment method similar to that of the current CDN service provider is adopted, the difference is that the DNS service is enabled on the network components of the fusion device, and the address of the local DNS server is notified to the CDN component of the fusion device, and the local DNS server is generated by the CDN component The corresponding relationship between the address and the CDN service address is reported to the DNS GSLB of the CDN central management system; when the user accesses the application, the normal DNS resolution process is followed, and when there is no DNS record locally, the upper-level DNS is queried until the root DNS, and the root DNS redirects the request To the ISP to authorize the DNS; then the ISP authorizes the DNS to redirect the request to the DNSGSLB of the CDN central management system, and the GSLB determines the CDN service address for the user according to the relationship between the DNS service address and the CDN service address, combined with the scheduling strategy, and returns the resolution Result; locate the user on the local CDN service node.

The specific implementation steps are as follows:

Before the user client accesses the service, some prior deployment is required; the DNS server needs to be enabled on the main control unit (or network service processing unit) of the fusion device; and the address of the DNS server is notified to the fusion device through the internal interface The CDN component, which generates the corresponding relationship between the local DNS server address and the CDN service address, and notifies the CDN central management system through the management channel between the CDN component and the CDN central management system, and synchronizes to the central DNS GSLB, so that the DNSGSLB It has the basis of user positioning. At the same time, when a user establishes a network connection, the network component needs to deliver corresponding configurations so that the DNS server address of the user's network connection is the DNS server address of the converged device.

The following is the user business access processing flow:

1. To access the application, the user first initiates a DNS resolution request; since the DNS server address in the user's network connection is the DNS server address of the fusion device, the DNS resolution request is sent to the DNS server of the fusion device;

2. The DNS server of the fusion device queries the local DNS cache, and initiates a query request to the upper-level DNS server if the corresponding DNS record cannot be found; in this embodiment, the upper-level DNS server is not set to DNS GSLB, but is set to external DNS Server; in the case that the external DNS server does not have a corresponding cache, the DNS root server can be queried step by step;

3. After the DNS root server receives the DNS query request, it searches level by level, and finally the local DNS server can obtain the address of the DNS server authorized by the ISP;

4. The local DNS server of the fusion device initiates a DNS query request to the ISP authorized DNS server;

5. After receiving the DNS query request, the ISP authorized DNS server returns the DNS server address of the CDN system because the ISP uses the CDN service; in this system, if the ISP uses the CDN service provided by the system, the returned address is The DNS GSLB address of the CDN center management system of this system;

6. The local DNS server of the fusion device initiates a DNS query request to the DNS GSLB of the CDN central management system according to the DNS server address returned by the DNS server authorized by the ISP;

7. The DNS GSLB of the CDN center management system queries the corresponding DNS records, and determines the CDN service node for the user according to the corresponding relationship between the local DNS server and the CDN service address, and returns the analysis result to the local DNS server of the fusion device;

8. The local DNS server of the fusion device returns the resolution result to the user client according to the DNS resolution result received;

9. The user client can obtain the CDN service address according to the DNS resolution result received; thus, it can establish an application layer link, access the application, and request content services.

The characteristic of this embodiment is that the existing general process of DNS resolution is retained. The difference is that the local DNS is the DNS server of the fusion device, and the CDN component of the fusion device reports the correspondence between the local DNS server and the CDN service address to the DNS GSLB system of the CDN center. This kind of embodiment is more suitable for the scenario of mixed bearer of contracted ICP/ISP and non-contracted ICP/ISP, closed service and open Internet service.

The present invention is based on a CDN and network fusion equipment, and provides a user positioning method and device based on the equipment. The advantage of this type of equipment is that it integrates CDN content distribution nodes and network equipment, maintains corresponding user status in CDN components and network components, and has internal interface interaction, which can achieve dual guarantees of content quality and network quality. In order to better realize the coordination of user content status and network status, and to better guarantee user experience, the user's network layer connection and application layer connection should be positioned on the same converged device. This method locates the user to the local CDN component mainly based on the DNS server deployed locally on the converged device, and specifically provides three embodiments. The three embodiments respectively adapt to different deployment methods and business scenarios, satisfy the requirement of locating the user's network layer connection and application layer connection to the same converged device, and better guarantee the user's service experience.

Specifically, the device for user positioning based on CDN and network integration of the present invention has the following characteristics:

1) The network fusion device of the present invention integrates network and CDN functions, and its network components and CDN components are loosely coupled, realizing the integration at the equipment level;

2) Network components and CDN components interact through internal system interfaces and message interfaces; enabling network components and CDN components to have the ability to collaborate;

3) Both the network component and the CDN component interact with the main control unit of the device through the internal system interface and message interface; so that the three have the ability to cooperate;

4) Both the network component and the CDN component have their own user state machines, and the state machines of the two are independent of each other;

5) The network components and CDN components maintain the user's network state machine and content state machine respectively, which is convenient for user-based refined operation and service guarantee;

6) The CDN components are managed by a unified CDN center manager, which can be set independently or incorporated into the network management system of the converged device described in this article as an integral part of the network management system;

7) DNS GSLB and CDN center management system are integrated and deployed in a unified manner; centralized deployment is adopted;

8) The fusion device enables the DNS service to realize the localization of the DNS resolution service;

9) The CDN central management system/GSLB can deliver the user location policy to the CDN component of the fusion device; after the CDN component of the fusion device explains the policy, it triggers the delivery of configuration instructions to the main control or network components of the fusion device, according to the local CDN service address Corresponding relationship with the domain name, add the corresponding DNS record; when the subsequent user application visits, the DNS query can directly locate the CDN service address of the device;

10) The CDN component of the fusion device has the function of generating a corresponding relationship between the address of the local DNS server and the service address of the CDN, and reporting to the CDN central management system/DNS GSLB;

11) The DNS GSLB of the CDN center can add corresponding DNS records, and implement user positioning based on the correspondence between the local DNS server address reported by the CDN component of the fusion device and the service address of the CDN.

To sum up, the present invention guarantees user service experience by locating the user's network layer connection and application layer connection on the same converged device.

Although the present invention has been described in detail above, the present invention is not limited thereto, and various modifications can be made by those skilled in the art based on the principle of the present invention. Therefore, any modifications made according to the principles of the present invention should be understood as falling within the protection scope of the present invention.

Claims (12)

1. A kind of 1. method for positioning user based on content distributing network CDN and the network integration, it is characterised in that including：

   By the way that the CDN node of CDN system is merged with the network equipment, fusion device is formed, the fusion device includes CDN Part and network components, and it is deployed with local dns server on the fusion device；

   Generation contains signing ICP/ISP domain names and using the external address of service of fusion device CDN component as signing ICP/ISP domains The DNS records of name corresponding address, and/or generation externally service ground containing local dns server address with fusion device CDN component The address relationship record of location corresponding relation；

   In the dns resolution request that user terminal is initiated, obtained using DNS records or address relationship record and be used for returning to The dns resolution result of the user terminal, being established so as to user terminal according to the analysis result and the fusion device CDN component should With link, so as to realize that user terminal positions to the user of fusion device CDN component.
2. 2. according to the method for claim 1, it is characterised in that the network components is used to provide network insertion to user terminal And carrying service, and the fusion device also includes being used for the main control unit for serving CDN component and network components.
3. 3. according to the method for claim 1, it is characterised in that described generation DNS records include：

   CDN central management systems issue the instruction for including signing ICP/ISP domain-name informations to fusion device CDN component；And

   Domain-name information of the fusion device CDN component in instruction, domain of the request local dns server for signing ICP/ISP The described DNS records of name generation；

   Wherein, the domain name that the domain name in the DNS records is the signing ICP/ISP, corresponding address is fusion device CDN portions The external address of service of part.
4. 4. according to the method for claim 3, it is characterised in that the described utilization DNS records obtain dns resolution result Including：

   Local dns server inquires about the DNS records of local cache, and will inquire according to the User DN S analysis requests received The external address of service of fusion device CDN component for corresponding to signing ICP/ISP domain names in DNS records returns to user terminal.
5. 5. according to the method for claim 2, it is characterised in that described generation address relationship record includes：

   Fusion device network components or main control unit give the address notification of local dns server to fusion device CDN component；

   Message of the fusion device CDN component in the notice, is generated on local dns server address and fusion device The address relationship record of the corresponding relation of the external address of service of CDN component, and reported the domain name of CDN central management systems System resource is dispatched and SiteServer LBS DNS GSLB.
6. 6. according to the method for claim 5, it is characterised in that the described utilization address relationship record obtains DNS solutions Analysis result includes：

   The dns resolution request of user terminal is sent to the DNS GSLB by local dns server；

   The DNS GSLB ask according to dns resolution, the domain name corresponding to inquiry in its domain name record；

   After domain name corresponding to inquiring, local dns server address and fusion device CDN portions in the relation record of address The corresponding relation of the external address of service of part, the fusion device CDN component corresponding to is defined as CDN service node, and will contain it The analysis result of address returns to user terminal via local dns server.
7. 7. according to the method for claim 5, it is characterised in that the described utilization address relationship record obtains DNS solutions Analysis result includes：

   The dns resolution request of user terminal is sent to DNS root servers by local dns server, and according to the ICP/ISP of its return DNS information is authorized to initiate DNS query request to ICP/ISP authorized DNS servers；

   The CDN service used that local dns server returns according to the ICP/ISP authorized DNS servers in response to inquiry request The DNS information of system, DNS query request is initiated to the DNS GSLB；

   The DNS GSLB are asked according to DNS query, and DNS corresponding to inquiry is recorded, and the local in the relation record of address Dns server address and the corresponding relation of the external address of service of fusion device CDN component, the fusion device CDN component corresponding to It is defined as CDN service node, and the analysis result containing its address is returned into user terminal via local dns server.
8. A kind of 8. user's positioner realized based on content distributing network CDN and the network integration, it is characterised in that including：

   The DNS record generation units of fusion device, for generating containing signing ICP/ISP domain names and fusion device CDN component External address of service records as the DNS of signing ICP/ISP domain name corresponding address, or containing local dns server address with The address relationship record of the external address of service corresponding relation of fusion device CDN component；

   Dns resolution equipment, when the dns resolution for being initiated in user terminal is asked, DNS records or address relationship is utilized to remember Record obtains the dns resolution result for being used for returning to the user terminal, so that user terminal merges according to the analysis result with described Equipment CDN component establishes application link, so as to realize that user terminal positions to the user of fusion device CDN component；

   Wherein, the fusion device is to have merged CDN node and the equipment of the network equipment, including：

   Described local dns server；And

   Described fusion device CDN component, for establishing and safeguarding the application link with user terminal, and provide content distribution clothes Business.
9. 9. device according to claim 8, it is characterised in that the fusion device also includes being used to provide net to user terminal Network accesses and the network components of carrying service；

   Wherein, interior signaling interaction interface is provided between the network components of the fusion device and CDN component, so as to network components To the information of CDN component report of user address pool, CDN component accelerates, receives and performed anti-to network components application user network Feedforward information, User Status inquiry and feedack.
10. 10. device according to claim 9, it is characterised in that the fusion device also includes：For serving CDN portions The main control unit of part and network components；

    Wherein, main control unit is provided with interior signaling interaction interface between CDN component between network components respectively；

    Wherein, described local dns server is opened by the main control unit, or is opened by network components.
11. 11. device according to claim 9, it is characterised in that the DNS record generation units of the fusion device are by described Local dns server and fusion device CDN component form；

    Wherein, domain-name information of the fusion device CDN component in instruction, request local dns server is for signing ICP/ISP The described DNS records of domain name generation；And

    Believe the address for the local dns server that fusion device CDN component is noticed according to fusion device network components or main control unit Breath, generate described address relationship record.
12. 12. device according to claim 8, it is characterised in that dns resolution equipment is either held in the fusion device The local dns server of row local parsing, or in the DNS GSLB for being execution domain name mapping in CDN central management systems.