WO2016180284A1

WO2016180284A1 - Service node allocation method, device, cdn management server and system

Info

Publication number: WO2016180284A1
Application number: PCT/CN2016/081303
Authority: WO
Inventors: 古雄
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-05-08
Filing date: 2016-05-06
Publication date: 2016-11-17
Also published as: CN106209952B; CN106209952A

Abstract

A service node allocation method, device, CDN management server and system. The method comprises: receiving a login request of a user terminal, the login request requesting access to a multimedia service system; determining, according to a preset algorithm, a selected service node for providing a service for the user terminal in service nodes of a content delivery network (CDN); and transmitting a signaling address of the selected service node to the user terminal.

Description

Service node allocation method, device, CDN management server and system

Technical field

The present application relates to the field of communications, for example, to a service node allocation method, apparatus, content distribution network CDN management server and system.

Background technique

With the rapid development of broadband networks, many new Internet services have been created, such as Internet Protocol Television (IPTV) services, Internet video, Over The Top (OTT), etc. business. At the same time, these multimedia services have extremely high bandwidth requirements, and with the rapid development of multimedia services, bandwidth is rapidly being swallowed up. For these multimedia services, if there is no Content Delivery Network (CDN), each user needs to have a high-bandwidth link from the access side to the backbone network. The cost of the high-bandwidth link is high and the quality is high. It is also difficult to guarantee.

In a multimedia service system, a plurality of media servers (ie, nodes) are usually used to form a CDN to provide services for an end user, multiple nodes are hierarchically distributed, and each user is designated to provide a service node; the CDN caches content in different places, and loads the load. Techniques such as equalization redirect user requests to a better cache server (eg, the nearest cache server) to obtain content, thereby enabling the user to view content on the node to which the preferred cache server belongs. The request router (Request Router, RR for short) mechanism is one of the key factors in CDN network planning. To achieve global load balancing, the CDN RR server utilizes redirection scheduling techniques to schedule user requests to better servers.

During the research, the inventor found that with the rapid growth of the number of end users and nodes, the load pressure of CDN RR servers will also become larger and larger. How to reduce the load pressure of CDN RR has become a new problem in CDN networks.

In view of the high load pressure of related technologies CDN RR servers, no effective solution has been proposed yet.

Summary of the invention

In order to solve the above technical problem, the present application provides a service node allocation method, apparatus, CDN management server and system.

The application provides a service node allocation method, including:

Receiving a login request of the user terminal, the login request is used to request access to the multimedia service system; and determining, according to a preset algorithm, a selected service node of the service node of the content distribution network (CDN) serving the user terminal; Transmitting the signaling address of the selected serving node to the user terminal.

Optionally, after receiving the login request, the method further includes: determining that the access mode requested by the user terminal carried in the login request is a non-CDN RR access mode.

Optionally, after determining that the access mode requested by the user terminal carried in the login request is the non-CDN RR access mode, or receiving the user terminal to request access to a multimedia service system. After the login request, the method further includes:

Determining whether the load of the CDN RR server is lower than a first preset value; and determining that the load of the CDN RR server is lower than the first preset value, sending the signaling address of the CDN RR server to The user terminal.

Optionally, the determining, by the service node of the CDN, the selected service node that provides the service for the user terminal includes: determining that the load of the CDN RR server is not lower than the first preset value, Determining the selected service node serving the user terminal in a service node of the CDN.

Optionally, after receiving the login request, the method further includes: determining that the access mode requested by the user terminal carried in the login request is a CDN RR access mode.

Optionally, after determining that the access mode requested by the user terminal carried in the login request is the CDN RR access mode, or receiving the user terminal for requesting access to a multimedia service system After the login request, the method further includes:

Determining whether the load of the CDN RR server is higher than a second preset value; if it is determined that the load of the CDN RR server is not higher than the second preset value, sending the signaling address of the CDN RR server To the user terminal.

Determining whether the CDN RR server is faulty;

And sending a signaling address of the CDN RR server to the user terminal if the CDN RR server is not faulty. Optionally, determining the selected serving node that serves the user terminal in the serving node of the CDN includes: determining that the load of the CDN RR server is higher than the The second preset value, or in the case of the CDN RR server failure, determining the selected service node serving the user terminal among the service nodes of the CDN.

The application also provides a service node allocation device, including:

a receiving module, configured to receive a login request of the user terminal, where the login request is used to request access to the multimedia service system; and the computing module is configured to determine, in the service node of the content distribution network (CDN), the user according to a preset algorithm The terminal provides a selected service node of the service; the first sending module is configured to send the signaling address of the selected serving node to the user terminal.

Optionally, the device further includes: a first determining module, configured to determine that the access mode requested by the user terminal carried in the login request is a non-CDN RR access mode.

Optionally, the device further includes: a first determining module, configured to determine whether a load of the CDN RR server is lower than a first preset value; and a second sending module configured to determine that the load of the CDN RR server is low And sending, in the case of the first preset value, a signaling address of the CDN RR server to the user terminal.

Optionally, the calculating module is configured to determine, in the case that the load of the CDN RR server is not lower than the first preset value, determine, in the service node of the CDN, the service provided by the user terminal Describe the selected service node.

Optionally, the device further includes: a second determining module, configured to determine that the access mode requested by the user terminal carried in the login request is a CDN RR access mode.

Optionally, the device further includes: a second determining module, configured to determine whether the load of the CDN RR server is higher than a second preset value; and the third sending module is configured to determine that the load of the CDN RR server is not When the second preset value is higher, the signaling address of the CDN RR server is sent to the user terminal.

Optionally, the second determining module is configured to determine whether the CDN RR server is faulty; and the third sending module is configured to: if it is determined that the CDN RR server is not faulty, The signaling address of the CDN RR server is sent to the user terminal. Optionally, the calculating module is configured to: when it is determined that the load of the CDN RR server is higher than the second preset value, or the CDN RR server is faulty, determine that the service node of the CDN is The user terminal provides the selected service node of the service.

The application also provides a content distribution network CDN management server, comprising: the above service node allocation device.

The present application further provides a multimedia service system, including: the content distribution network CDN management server, the content service request routing CDN RR server, the service node, and the user terminal, and the CDN RR server is configured to log in to the user terminal. Redirecting to a selected one of the service nodes; the service node, configured to provide multimedia services.

The present application also provides a computer storage medium storing computer executable instructions arranged to perform the above method.

The application also provides an apparatus comprising:

One or more processors;

Memory

One or more programs, the one or more programs being stored in the memory, and when executed by the one or more processors, do the following:

Receiving a login request of the user terminal, where the login request is used to request access to the multimedia service system;

Determining, according to a preset algorithm, a selected service node in the service node of the content distribution network CDN serving the user terminal;

Transmitting the signaling address of the selected serving node to the user terminal. Through the application, a receiving user terminal is used to request a login request for accessing the multimedia service system; according to a preset algorithm, a selected service node of the service node of the content distribution network (CDN) serving the user terminal is determined; The manner in which the signaling address of the service node is sent to the user terminal solves the problem of large load pressure on the CDN RR server and reduces the load pressure on the CDN RR server.

DRAWINGS

The drawings described herein are intended to be illustrative of the present invention and are intended to be a part of this application. In the drawing:

1 is a flow chart of a service node allocation method according to an embodiment of the present invention;

2 is a schematic structural diagram of a service node allocating apparatus according to an embodiment of the present invention;

3 is a schematic structural diagram 1 of an optional structure of a service node allocating device according to an embodiment of the present invention;

4 is a second schematic diagram of an optional structure of a service node allocating device according to an embodiment of the present invention;

FIG. 5 is a third schematic diagram of an optional structure of a service node allocating apparatus according to an embodiment of the present invention; FIG.

6 is a fourth schematic diagram of an optional structure of a service node allocating device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a multimedia service system according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic structural diagram of a multimedia service system according to an alternative embodiment of the present invention; FIG.

9 is a flowchart of a multimedia access service request method according to an alternative embodiment of the present invention;

FIG. 10 is a schematic diagram showing the hardware structure of an apparatus for performing a service node allocation method according to an embodiment of the present invention.

Implementation

The present application will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. Apply some of the embodiments, not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope shall fall within the scope of the application.

The embodiment of the present invention provides a service node allocation method. FIG. 1 is a flowchart of a service node allocation method according to an embodiment of the present invention. As shown in FIG. 1 , the process includes the following steps:

Step S102, receiving a login request of the user terminal, where the login request is used to request access to the multimedia service system;

Step S104: Determine, according to a preset algorithm, a selected service node in the service node of the CDN that provides a service for the user terminal;

Step S106: Send the signaling address of the selected serving node to the user terminal.

Through the above steps, the method for directly calculating and determining the selected serving node for the user terminal and transmitting the signaling address of the selected serving node to the user terminal is adopted in the content distribution network, so that the user terminal can according to the received signaling address. And obtaining the multimedia service directly through the selected service node, where the selected service node may be a service node whose performance such as the idle value of the CPU and the IO throughput can satisfy the user terminal. It can be seen that the above steps can be used to redirect the login request through the CDN RR server, which solves the problem of large load pressure on the CDN RR server and reduces the load pressure on the CDN RR server. In addition, since the user terminal can directly acquire the multimedia service from the selected service node without being redirected by the CDN RR server, the interaction process is reduced, thereby improving the processing efficiency of the content distribution network.

Alternatively, the above steps may be performed by the CDN management server or by a module belonging to the CDN management server. The CDN management server is the management center of the CDN network.

In this embodiment, an embodiment of the present invention will be described with the CDN management server as an execution subject.

Optionally, the CDN management server may determine, according to requirements, whether to process the login request of the user terminal in the manner of step S104 to step S106. For example, the CDN management server may indicate that the user terminal adopts the CDN RR access mode when the load of the CDN RR server is low. For example, the CDN management server determines whether the load of the CDN RR server is lower than the first preset value; When the load of the CDN RR server is lower than the first preset value, the signaling address of the CDN RR server is sent to the user terminal. Optionally, after receiving the signaling address of the CDN RR server, the user terminal accesses by using a CDN RR access mode.

Optionally, in a case that the CDN management server determines that the load of the CDN RR server is not lower than the first preset value, step S104 to step S106 are performed, so that the user terminal continues to use the non-CDN RR access mode for access.

It can be seen that, in the foregoing manner, the user terminal can access in the CDN RR access mode or the non-CDN RR access mode according to the load condition of the CDN RR server.

In some embodiments, the manner in which the access mode is selected by the user terminal may also be adopted. In this case, the user's login request may carry the access mode selected by the user terminal. For example, in a case where the access mode selected by the user terminal is the non-CDN RR access mode, after the step S102, the CDN management server may further parse the login request, and resolve the request to the user terminal carried in the login request. In the case where the inbound mode is the non-CDN RR access mode, step S104 is performed.

Optionally, in the case that the user terminal uses the non-CDN RR access mode, the CDN management server can still flexibly specify the access mode of the user terminal according to the load condition of the CDN RR.

Optionally, the CDN management server may determine, according to requirements, whether to process the login request of the user terminal in the manner of step S104 to step S106. For example, the CDN management server determines whether the load of the CDN RR server is higher than a second preset value, or whether the CDN RR server is faulty; and determines that the load of the CDN RR server is not higher than a second preset value, or the CDN RR server In the case of no failure, the signaling address of the CDN RR server is sent to the user terminal.

Optionally, after receiving the signaling address of the CDN RR server, the user terminal accesses by using a CDN RR access mode.

Optionally, in a case that the CDN management server determines that the load of the CDN RR server is higher than the second preset value, or the CDN RR server is faulty, step S104 to step S106 are performed, so that the user terminal continues to adopt the non-CDN RR connection. Enter mode to access.

Optionally, in the case that the user terminal adopts the CDN RR access mode, the CDN management server can still flexibly specify the access mode of the user terminal according to the load condition of the CDN RR.

A service node allocating device is also provided in the embodiment to implement the above-mentioned embodiments and optional embodiments. The descriptions of the modules involved in the device will be described below. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments can be implemented in software, hardware, or an implementation of a combination of software and hardware, is also possible and conceived.

2 is a schematic structural diagram of a service node allocating apparatus according to an embodiment of the present invention. As shown in FIG. 2, the apparatus includes: a receiving module 22, a calculating module 24, and a first sending module 26, wherein the receiving module 22 is configured to receive The user terminal is configured to request a login request to access the multimedia service system; the calculation module 24 is coupled to the receiving module 22, and configured to determine, according to a preset algorithm, a selected service node of the CDN serving node serving the user terminal; The transmitting module 26 is coupled to the computing module 24 and arranged to transmit the signaling address of the selected serving node to the user terminal.

FIG. 3 is a schematic diagram of an optional structure of a service node allocating device according to an embodiment of the present invention. As shown in FIG. 3, the device further includes: a first determining module 32 coupled to the receiving module 22 and the computing module 24 The access mode requested by the user terminal carried in the login request is set to be a non-CDN RR access mode.

FIG. 4 is a second schematic diagram of an optional structure of a service node allocating device according to an embodiment of the present invention. As shown in FIG. 4, the device further includes: a first determining module 42 coupled to the first determining module 32 or the receiving module. 22, and coupled to the computing module 24, configured to determine whether the load of the CDN RR server is lower than the first preset value; the second sending module 44, coupled to the first determining module 42, is configured to determine the load of the CDN RR server When the value is lower than the first preset value, the signaling address of the CDN RR server is sent to the user terminal.

Optionally, the calculating module 24 is configured to determine, in the case that the load of the CDN RR server is not lower than the first preset value, the selected service node serving the user terminal in the service node of the CDN.

FIG. 5 is a third schematic diagram of an optional structure of a service node allocating device according to an embodiment of the present invention. As shown in FIG. 5, the device further includes: a second determining module 52 coupled to the receiving module 22 and the computing module 24 The access mode requested by the user terminal carried in the login request is set to the CDN RR access mode.

FIG. 6 is a schematic diagram of an optional structure of a service node allocating device according to an embodiment of the present invention. As shown in FIG. 6 , the device further includes:

Optionally, the apparatus further includes: a second determining module 62 coupled to the second determining module 52 or the receiving module 22, and coupled to the computing module 24, configured to determine whether the load of the CDN RR server is The second sending module 64 is coupled to the second determining module 62, and is configured to: if it is determined that the load of the CDN RR server is not higher than the second preset value, The signaling address of the CDN RR server is sent to the user terminal.

Optionally, the second determining module 62 is configured to determine whether the CDN RR server is faulty; the fourth sending module, the third sending module 64 is configured to determine that the CDN RR server is not faulty, Sending a signaling address of the CDN RR server to the user terminal.

Optionally, the calculating module 24 is configured to determine, in the case that the load of the CDN RR server is higher than the second preset value, or the CDN RR server is faulty, determining the service provided by the CDN to the user terminal. Service node.

The embodiment further provides a CDN management server, comprising: the foregoing service node allocating device.

The present embodiment further provides a multimedia service system. FIG. 7 is a schematic structural diagram of a multimedia service system according to an embodiment of the present invention. As shown in FIG. 7, the multimedia service system includes: a CDN management server 72, a CDN RR server 74, The service node 76 and the user terminal 78, wherein the CDN RR server 72 is arranged to redirect the login request of the user terminal to a selected one of the service nodes; the service node 76 is arranged to provide multimedia services.

In addition, a plurality of functional units in the embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

In order to make the description of the embodiments of the present invention more clear, the following description and description are made in conjunction with the exemplary embodiments.

The present invention provides a system and method for improving user access to a multimedia service system, and the method relates to a multimedia service field in a telecommunication network such as an IPTV, a mobile streaming media system, or a mobile phone download.

The optional optional embodiment of the present application aims to provide a new user access mode to mitigate the CDN RR server in a multimedia service system of a large-scale end user (ie, user terminal) and a node (ie, a service node). The load pressure thus enhances the robustness of the CDN to provide multimedia services to users.

In this alternative embodiment, a CDN management module (corresponding to the above-mentioned CDN management server or the above-mentioned service node allocating device) establishes a channel between the CDN node and manages the CDN node; and establishes a channel between the CDN management module and the CDN RR and The CDN RR is managed; the CDN node can periodically report the performance status of the node to the CDN management module; the CDN RR can periodically report the heartbeat message to the CDN management module; the CDN management module can periodically forward the CDN node status information to the CDN RR;

The user terminal (for example, the set top box STB) initiates a login request to the CDN management module, and the CDN management module selects a corresponding service node signaling address or a signaling address of the CDN RR according to the user access mode to the user;

If the CDN RR access mode is selected, the CDN management module determines the running status of the CDN RR. When the status of the CDN RR is normal, the signaling address of the CDN RR is returned to the user, and each subsequent request is sent by the subsequent user. For the CDN RR, the CDN RR selects the appropriate service node to provide services to the user. If the CDN RR status is abnormal, the non-CDN RR access mode is selected; if the non-CDN RR access mode is selected, the CDN management module selects the selected serving node to return the signaling address of the selected serving node to the user according to the algorithm. The user directly logs in to the node for service, and then directly performs services on the node.

In this way, users can better access the multimedia service system for service. For example, with the new user access mode, on the one hand, the load pressure of the CDN RR can be alleviated. On the other hand, when the CDN RR cannot provide access services for the user due to a failure, the new user access mode can continue to be Users provide access services to ensure the robustness of the system. At the same time, the new user access mode directly connects the user to the selected server for service, and then directly performs services on the server, which can improve the speed of the user accessing the media service.

An optional embodiment of the present application further provides an improved user access multimedia service system for implementing the foregoing method, the system comprising a CDN node, a CDN management module, and a CDN RR module (corresponding to the above CDN RR server);

CDN node: a server configured to store content and provide content services. For content, a CDN node can serve as a source node and a target node, and content is distributed from the source node to the target node;

CDN management module: configured to manage the status of the CDN node and the status of the CDN RR and process multimedia service requests;

CDN RR module: set to handle user access to the multimedia service system; according to the type of service requested by the user, the redirection scheduling technology is used to dispatch the user's request to the selected server.

The method for improving a multimedia access service request of a user in a multimedia service system by using a new user access mode provided by an optional embodiment of the present application includes the following steps:

Step 1: The CDN management module establishes a channel with the CDN node, and manages and processes the multimedia service request for the CDN node and the CDN RR. The CDN target node periodically reports the node status information of the CDN target node to the CDN management module; the CDN RR module is timed. Reporting a heartbeat message to the CDN management module;

Step 2: The user terminal device initiates a user login request to the CDN management module, and the CDN management module determines the user access mode; if the CDN RR user access mode, determines whether the CDN RR status is normal, and if yes, returns a CDN RR message. The address is given to the user, and the process ends. If the CDN RR status is abnormal, the user transfers to the non-CDN RR mode access; if it is the non-CDN RR mode user access mode, the CDN management module selects the current selection according to the selected algorithm. The signaling address of the service node to the user;

Step 3: The user terminal device initiates a multimedia service service request according to the returned address. If the returned address is the signaling address of the service node, the user directly performs multimedia service on the node; if it is the address of the CDN RR, the user The CDN RR management module initiates a multimedia service request, and the CDN RR management module uses the redirection scheduling technology to schedule the user's request to the corresponding service node for multimedia service.

The optional embodiments of the present application are described below with reference to the accompanying drawings.

FIG. 8 is a schematic structural diagram of a multimedia service system according to an alternative embodiment of the present application, which is a modification of FIG. 7. As shown in FIG. 8, the present embodiment provides a system for improving service access in a multimedia service system, including a CDN management server, a plurality of node servers, a CDN RR management server, and a user terminal device.

In the implementation process, optionally, the CDN management module and the CDN node may establish a channel by using a Transmission Control Protocol (TCP); the CDN management module and the CDN RR module establish a channel by using a TCP protocol; and the user terminal device adopts a hypertext transfer protocol ( HTTP) accesses the CDN management module; the user terminal device interacts with the CDN node and the CDN RR through Real Time Streaming Protocol (RTSP).

FIG. 9 is a flowchart of a method for requesting a multimedia access service according to an alternative embodiment of the present application. As shown in FIG. 9, the process includes the following steps:

Step S901, the CDN node periodically sends node performance data to the CDN management module.

Step S902, the CDN management module forwards the CDN node performance data to the CDN RR module.

Step S903, the CDN RR periodically sends a heartbeat message to the CDN management module.

Step S904, the user terminal (for example, the STB) initiates a user login access request (corresponding to the above login request) to the CDN management module;

Step S905, the CDN management module determines the address of the CDN RR (ie, the signaling address of the CDN RR) according to the access mode of the user, or determines the address of the selected CDN service node according to a preset algorithm (ie, the selected CDN service node) Signaling address);

Step S906, the CDN management module returns the service address of the login access request to the user (ie, CDN RR) Address or the address of the selected CDN service node);

Method 1, in the case of obtaining a CDN service node through the CDN RR

Step S907, the user initiates a multimedia service request.

Step S908, the CDN RR returns the address of the selected CDN service node according to the redirect scheduling technology and the load balancing technology;

Step S909, the CDN RR returns the address of the CDN service node to the user;

Method 2, in the case of obtaining multimedia services directly through the selected CDN service node

Step S910, the user initiates a multimedia service request.

In step S911, the CDN service node provides a multimedia service to the user.

It should be noted that, in this alternative embodiment, the communication protocol adopted between multiple modules may adopt different interaction protocols in the implementation. The system and method for improving user access to the multimedia service system by using the innovative architecture of the new user access mode provided by the optional embodiment of the present application can be extended to other service areas.

In summary, through the foregoing embodiment and the optional embodiment of the present application, a user access mode is newly added, and the user is bound to the selected node by using the management platform to perform the service, and the user logs in to the node. The subsequent request service does not need to initiate a redirection request, and the service can be directly performed on the binding node, thereby improving the speed at which the user accesses the multimedia service. In addition, the management platform can flexibly configure the user's access policy to share the pressure of the redirected server, and the new access mode (user access mode) can continue to provide access to the user when the redirect server cannot perform services. service.

The embodiment further provides a software for executing the technical solutions described in the foregoing embodiments and optional embodiments.

The embodiment further provides a storage medium in which the above software is stored, and the storage medium includes, but is not limited to, an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.

It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or order. It is to be understood that the objects so used are interchangeable, where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

The modules or steps of the present application described above may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices. Alternatively, they may be implemented by computing devices. The executed program code is implemented such that they can be stored in a storage device by a computing device, and the steps shown or described can be performed in an order different than that herein, or they can be fabricated into an integrated circuit module. Or by making multiple modules or steps among them into a single integrated circuit module. Thus, the application is not limited to any particular combination of hardware and software.

The above description is only an optional embodiment of the present application and is not intended to limit the application.

The embodiment of the invention further provides a hardware structure diagram of a device for performing a service node allocation method. Referring to Figure 10, the device includes:

One or more processors 100, one processor 100 is taken as an example in FIG. 10;

Memory 101.

The device may also include an input device 102 and an output device 103. The processor 100, the memory 101, the input device 102, and the output device 103 in the device may be connected by a bus or other means, and the connection through the bus is taken as an example in FIG.

The memory 101 is used as a computer readable storage medium, and can be used to store a software program, a computer executable program, such as a program instruction/module corresponding to the service node allocation method in the embodiment of the present invention. The processor 100 executes the function application and data processing of the server by executing software programs, instructions, and modules stored in the memory 101, that is, implementing the service node allocation method in the foregoing method embodiments.

The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to usage of the terminal device, and the like. Further, the memory 101 may include a high speed random access memory, and may also include a nonvolatile memory such as at least one magnetic disk storage device, a flash memory device, or other nonvolatile solid state storage device. In some examples, memory 101 can include memory remotely located relative to processor 100, which can be connected to the terminal device over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The input device 102 can be configured to receive input numeric or character information and to generate and use with the terminal User settings and key signal inputs related to function control. The output device 103 may include a display device such as a display screen.

The one or more modules are stored in the memory 101, and when executed by the one or more processors 100, perform the steps of the above method embodiments.

Industrial applicability

The embodiment of the invention solves the problem that the CDN request routing server has a large load pressure in the related art, and reduces the load pressure of the CDN request routing server.

Claims

A service node allocation method includes:

Receiving a login request of the user terminal, where the login request is used to request access to the multimedia service system;

Determining, according to a preset algorithm, a selected service node in the service node of the content distribution network CDN serving the user terminal;

Transmitting the signaling address of the selected serving node to the user terminal.
The method of claim 1, after receiving the login request, the method further comprising:

Determining that the access mode requested by the user terminal carried in the login request is a non-CDN request routing RR access mode.
The method according to claim 1 or 2, after determining that the access mode requested by the user terminal carried in the login request is the non-CDN RR access mode, or receiving the user terminal for receiving After the request for accessing the login request of the multimedia service system, the method further includes:

Determining whether the load of the CDN RR server is lower than a first preset value;

And determining, in a case that the load of the CDN RR server is lower than the first preset value, sending a signaling address of the CDN RR server to the user terminal.
The method of claim 3, wherein the determining the selected service node serving the user terminal among the service nodes of the CDN comprises:

And determining, in the case that the load of the CDN RR server is not lower than the first preset value, determining the selected service node serving the user terminal among the service nodes of the CDN.
The method of claim 1, after receiving the login request, the method further comprising:

Determining that the access mode requested by the user terminal carried in the login request is a CDN RR access mode.
The method according to claim 1 or 5, after determining that the access mode requested by the user terminal carried in the login request is the CDN RR access mode, or receiving the user terminal for requesting After the login request of the multimedia service system is accessed, the method further includes:

Determining whether the load of the CDN RR server is higher than a second preset value; and determining that the load of the CDN RR server is not higher than the second preset value, the letter of the CDN RR server The address is sent to the user terminal.
The method according to claim 1 or 5, wherein after determining that the access mode requested by the user terminal carried in the login request is the CDN RR access mode, or receiving the user terminal After the request for accessing the login request of the multimedia service system, the method further includes:

Determining whether the CDN RR server is faulty;

And sending a signaling address of the CDN RR server to the user terminal if the CDN RR server is not faulty.
The method according to claim 6 or 7, wherein the determining the selected service node serving the user terminal among the service nodes of the CDN comprises:

Determining, in the case that the load of the CDN RR server is higher than the second preset value, or the CDN RR server is faulty, determining the selection of the service provided by the CDN to the user terminal Service node.
A service node allocating device includes:

a receiving module, configured to receive a login request of the user terminal, where the login request is used to request access to the multimedia service system;

a computing module, configured to determine, according to a preset algorithm, a selected service node in the service node of the content distribution network CDN serving the user terminal;

The first sending module is configured to send the signaling address of the selected serving node to the user terminal.
The apparatus of claim 9 further comprising:

The first determining module is configured to determine that the access mode requested by the user terminal carried in the login request is a non-CDN request routing RR access mode.
The device according to claim 9 or 10, further comprising:

a first determining module, configured to determine whether a load of the CDN RR server is lower than a first preset value;

The second sending module is configured to send the signaling address of the CDN RR server to the user terminal if it is determined that the load of the CDN RR server is lower than the first preset value.
The device according to claim 11, wherein the calculating module is configured to determine, in a service node of the CDN, that the load of the CDN RR server is not lower than the first preset value. Said selected service node that the user terminal provides for service.
The apparatus of claim 9 wherein said apparatus further comprises:

The second determining module is configured to determine that the access mode requested by the user terminal carried in the login request is a CDN RR access mode.
The device according to claim 9 or 13, wherein the device further comprises:

The second determining module is configured to determine whether the load of the CDN RR server is higher than a second preset value;

The third sending module is configured to send the signaling address of the CDN RR server to the user terminal if it is determined that the load of the CDN RR server is not higher than the second preset value.
The apparatus according to claim 14, wherein the second determining module is configured to determine whether the CDN RR server is faulty;

The third sending module is configured to send the signaling address of the CDN RR server to the user terminal if it is determined that the CDN RR server is not faulty.
The device according to claim 14 or 15, wherein the calculation module is configured to determine that the load of the CDN RR server is higher than the second preset value, or the CDN RR server is faulty. The selected service node serving the user terminal in the service node of the CDN is determined.
A content distribution network CDN management server comprising: the service node allocating device according to any one of claims 9 to 16.
A multimedia service system, comprising: a content distribution network CDN management server according to claim 17, a request routing CDN RR server of a content service, a service node, and a user terminal, wherein

The CDN RR server is configured to redirect a login request of the user terminal to a selected one of the service nodes;

The service node is configured to provide multimedia services.
A computer storage medium storing computer executable instructions arranged to perform the method of any of claims 1-8.