WO2013143360A1

WO2013143360A1 - Method for downloading service data and mobile terminal

Info

Publication number: WO2013143360A1
Application number: PCT/CN2013/071359
Authority: WO
Inventors: 蔡云飞; 汪洋; 周洪
Original assignee: 华为技术有限公司
Priority date: 2012-03-30
Filing date: 2013-02-05
Publication date: 2013-10-03
Also published as: CN102647460A

Abstract

The embodiment of the present invention discloses a method for downloading service data and a mobile terminal. If the mobile terminal finds the switching of a agent area when downloading the service data from the current linked data source, obtain the information of the current optimal data source; and if the current optimal data source is different from the current linked data source, the mobile terminal transmits a link request message to the current optimal data source, and continuously downloads the service data from the current optimal data source. With the present invention, the condition that the mobile terminal still downloads the needed service data from the optimal data source corresponding to the place for initiating the service request even if the mobile terminal is far away from the agent area in which initiating the service request under the route optimization mode of a mobile IP (Internet Protocol) can be avoided. The reduction of the whole network flow is facilitated, and meanwhile, the communication quality is improved.

Description

Business data downloading method and mobile terminal This application claims priority to Chinese patent application filed on March 30, 2012 by the Chinese Patent Office, application number CN 201210089705.6, and the invention titled "a service data downloading method and mobile terminal" The entire contents of which are incorporated herein by reference. Technical field

The present invention relates to mobile communication technologies, and in particular, to a service data download method and a mobile terminal. BACKGROUND With the development of 3G networks and smart mobile terminal technologies, accessing the Internet anytime and anywhere in a mobile state has become an indispensable requirement for people's lives. People can use mobile terminals to engage in various network experiences such as video viewing and file downloading. How to guide mobile terminal users to access the data source closest to the user, in order to reduce the transmission traffic of the whole network, improve the download speed of users, and improve the user experience, is a hot issue in current network research.

Users accessing the network in a mobile state need to rely on mobile IP technology. Mobile IP technology means that when a mobile user terminal uses a network based on TCP/IP protocol in moving and roaming across networks, it does not need to modify the original IP address of the mobile terminal, and continues to enjoy all the rights in the original network (similar to mobile phone roaming without changing The number, here is no need to change the IP address). In simple terms, Mobile IP provides an IP routing mechanism that allows a mobile node to connect to any link with a permanent IP address. Mobile IP has two implementation methods: tunnel mode and route optimization mode. When the mobile user terminal is on the local network link, the data flow of the two modes is the same. The user's request to access the server is forwarded to the server through the home agent (HA), and the data responded by the server is forwarded to the user through the home agent. . When the user is in the remote network area, the user is roaming. At this time, the step of the user accessing the network through the tunnel method includes: the request for the user to access the server is forwarded to the server through the foreign agent (FA), and the data responded by the server is not directly sent to the foreign agent, but is sent to the user's home agent. There is a forwarding tunnel between the home agent and the foreign agent. The data is forwarded from the home agent to the foreign agent through the tunnel, and the foreign agent forwards the data to the roaming user. The steps of accessing the network through the route optimization mode when the user is in the remote network area include: The request for the user to access the server is forwarded to the server through the foreign agent FA, and the data responded by the server passes the foreign agent. Forward directly to the user.

Content providers can optimize server resources by means of Application Layer Traffic Optimization (ALTO) technology and Domain Name System (DNS). For example, the ALTO service can provide information such as parameter selection of network resources (eg, relative location information of resource consumers and multiple data sources, and which data source is closer to resource consumers) to achieve a change in network resource consumption patterns. Maintain and improve application performance.

When the user initiates a business process (video viewing, file download, etc.) to the content provider (English: Content Provider, CP for short) at the current location, the CP server selects a content server to provide services to the user according to the current location of the user. Data, the essence of the nearest choice is to optimize application layer traffic, making user data access marginal, reducing network traffic, and improving user access quality.

For the tunnel mode, since the data provided by the data source is always forwarded to the user's mobile terminal through the home agent, regardless of which agent area the user's mobile terminal is currently in, the resource data is obtained from the data source closest to the home agent. .

However, for the route optimization mode, since the communication with the data source is the agent of the current location of the mobile terminal, and not necessarily the home agent, the user's mobile terminal is near the local agent (home agent or foreign agent) when initiating the service request. The data source obtains the resource data. When the end user crosses from one agent area to another agent area, although the agent is switched, the data source of the access does not change, and the user receives the data before the user actively requests the new service. The data received before the proxy switch is from the same data source. As shown in Figure 1, the user User-A starts from the area Area-A, and the agent of Area-A is PA: (1) the user forwards the request service data packet through the proxy PA, requests video data from the CP server, and the CP server follows the proxy. The IP address of the PA redirects the User-A request to the content server SA closest to the proxy PA; (2) the content server SA sends the video data to the proxy PA, and the PA forwards the data to User-A; (3) the user

User-A moves to the area Area-B during the process of watching the video. According to the route optimization method of the mobile IP, the proxy of User-A is switched from the PA to the PB, and the data of the content server SA is notified to the proxy PB, which is forwarded by the PB. Give User-A.

For the route optimization implementation method of mobile IP, the end user completes the network link and proxy switching in the process of acquiring data in the mobile state, and keeps the service uninterrupted, but the terminal user The proxy access after the switch is still the data source before the switch, and the original data source may not be the optimal data source for the current proxy in the current situation, because it needs to be from the currently linked data source to the current proxy. Very long transmission paths may not achieve the desired results for traffic optimization. As the user moves away, the application layer traffic optimization effect of the user may become worse and worse, and the network traffic can no longer be reduced, and the communication quality can be reduced.

SUMMARY OF THE INVENTION A technical problem to be solved by embodiments of the present invention is to provide a service data downloading method and a mobile terminal. It can reduce the network traffic and improve the communication quality when the user is in the mobile state to access the network.

In order to solve the above technical problem, an embodiment of the present invention provides a method for downloading service data, including:

If the proxy area switch is found when the service data is downloaded from the currently linked data source, the information of the current optimal data source is obtained;

If the current optimal data source is different from the currently linked data source, the link request message is sent to the current optimal data source, and the service data is continuously downloaded from the current optimal data source.

Correspondingly, an embodiment of the present invention further provides a mobile terminal, including:

An area switching judging module, configured to determine whether a proxy area switch is found;

The current optimal data source obtaining module is configured to: when the area switching judging module finds the proxy area switching, download the information of the current optimal data source when downloading the service data from the currently linked data source; the data source comparison module is configured to compare a current optimal data source and a currently linked data source; a downloading module, configured to send a link request message to the current optimal data source when the current optimal data source is different from the currently linked data source, and from the current optimal The data source continues to download the business data.

The embodiments of the present invention have the following beneficial effects: By dynamically linking to the current optimal data source when the proxy area is switched, it is possible to avoid the mobile terminal from being in the proxy optimization area when the mobile terminal is in the route optimization mode of the mobile IP. The situation that the service data is still downloaded from the optimal data source corresponding to the location when the service request is initiated is beneficial to reducing the traffic of the entire network and improving the communication quality. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below, and obviously, in the following description The drawings are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

1 is a schematic flowchart of a method for accessing a network in a mobile state according to a route optimization mode; FIG. 2 is a flowchart of a first embodiment of a method for downloading service data provided by the present invention;

3 is a flow chart of a second embodiment of a method for downloading service data provided by the present invention;

4 is a flow chart of a third embodiment of a method for downloading service data provided by the present invention;

5 is a flow chart of a method for downloading service data based on an ISP network or a CDN network provided by the present invention;

6 is a flowchart of a method for downloading service data based on a P2P network with a Tracker provided by the present invention;

7 is a flowchart of a service data downloading method based on a D2 protocol running P2P network provided by the present invention;

8 is a schematic structural diagram of a first embodiment of a mobile terminal provided by the present invention;

9 is a schematic structural diagram of a second embodiment of a mobile terminal provided by the present invention;

FIG. 10 is a schematic structural diagram of a third embodiment of a mobile terminal provided by the present invention.

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 invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 2, it is a flowchart of a first embodiment of a method for downloading service data provided by the present invention, where the method includes:

In step S200, if the proxy area switching is found when the service data is downloaded from the currently linked data source, the information of the current optimal data source is obtained. In the communication network, in order to ensure the communication quality, a lot of proxy agents are deployed, and the network area covered by each agent can be called a proxy area, when the mobile terminal When a terminal enters a proxy area, it needs to access the network through the proxy of the proxy area. The current optimal data source refers to the data source closest to the current agent of the mobile terminal among all data sources including the service data resources required by the user. When the user needs to access the network to initiate a service request (such as video viewing, file downloading, etc.), the application layer traffic optimization technology or other similar technology can obtain the current optimal data source information and pass the current proxy A direction. The current optimal data source requests service data. If the link is successfully established with the current optimal data source, then the current optimal data source is the data source currently linked by the mobile terminal. The mobile terminal downloads the required service data from the currently linked data source through the current proxy A. In the process of downloading the service data, if the mobile terminal switches to another proxy area due to the mobile, the proxy of the mobile terminal also switches. Agent B, which is another proxy area, becomes the current agent of the mobile terminal. Since the current proxy for forwarding data has changed, the currently linked data source may no longer be the current best-performing data source, and the mobile terminal re-acquires the information of the current optimal data source.

In step S201, if the current optimal data source is different from the currently linked data source, a link request message is sent to the current optimal data source, and the service data is continuously downloaded from the current optimal data source. Specifically, the obtained current optimal data source and the currently linked data source may be compared. If the current optimal data source is the same as the currently linked data source, the service data is still downloaded from the currently linked data source via the current proxy B. If the current optimal data source is different from the currently linked data source, a link is established with the current optimal data source, and the required service data is continuously downloaded from the current optimal data source via the current proxy B.

The service data downloading method provided by the embodiment of the present invention can avoid the proxy area in the mobile IP route optimization mode even if the mobile terminal is far away from the originating service request, by dynamically linking to the current optimal data source when the proxy area is switched. The situation that the service data is still downloaded from the optimal data source corresponding to the location when the service request is initiated is beneficial to reducing the traffic of the entire network and improving the communication quality.

In the embodiment shown in FIG. 2, if the data source needs to be switched during the process of downloading the service data, since a part of the service data has been downloaded, the remaining service data can be re-downloaded from the current optimal data source starting from the interruption point. This preferred embodiment is shown in Figure 3. Referring to FIG. 3, it is a flowchart of a second embodiment of a method for downloading service data provided by the present invention, where the method includes:

At step S300, the service data is received from the currently linked data source. Specifically, the requested service data is received from the currently linked data source via the current proxy. In step S301, it is determined whether the proxy area is switched. Specifically, the proxy discovery mechanism of the mobile IP can be used to discover a new proxy when the proxy area switches, so as to determine whether the proxy area is switched according to whether the proxy switches.

If the result of the determination in step S301 is NO, it indicates that the proxy area has not been switched, and the mobile terminal is still in the original proxy area, and the process proceeds to step S300.

If the answer of the step S301 is YES, it indicates that the mobile terminal moves to another proxy area, and the current proxy of the mobile terminal automatically switches to the proxy of the another proxy area, and step S302 is performed.

In step S302, information of the current optimal data source is obtained. The current optimal data source refers to the data source closest to the current agent of the mobile terminal among all data sources including the service data.

In step S303, it is determined whether the current optimal data source is the same as the currently linked data source. If the decision result in the step S303 is YES, the process proceeds to a step S300. If the decision result in the step S303 is NO, the step S304 is executed.

In step S304, the downloaded information of the currently downloaded service data is extracted. Specifically, the downloaded information may include data amount information, duration information, downloaded location information, downloaded content information, and the like of the downloaded service data.

In step S305, a link request message is sent to the current optimal data source, and the link request message includes the downloaded information. After receiving the link request message, the current optimal data source may determine the data amount of the service data that the mobile terminal has downloaded according to the downloaded information included therein, and then forward the service data after the downloaded service data to the mobile terminal via the current agent of the mobile terminal. , that is, the service data requested by the mobile terminal that has not been downloaded yet.

In step S306, the service data is continuously downloaded from the current optimal data source according to the downloaded information in the link request message. Specifically, the mobile terminal can continue to download the service data from the current optimal data source via the current agent, and the service data that continues to be downloaded does not include the downloaded service data.

By sending the downloaded information of the downloaded service data to the current optimal data source, data synchronization can be implemented, so that the service data can be automatically transferred when the data source is switched, and the data source switching is invisible to the user, thereby ensuring the user service experience. Fluency ensures a better user experience.

In the embodiment shown in FIG. 3, after the step S305, the link with the current optimal data source may not be successfully established due to the communication environment. In order to ensure the smoothness of the downloaded service data, it is necessary to determine whether the link is successfully established. For example, as shown in Figure 4. Please refer to FIG. 4, which is a A flowchart of a third embodiment of a method for downloading service data, the method comprising:

At step S400, service data is received from the currently linked data source. Specifically, the requested service data is received from the currently linked data source via the current agent.

In step S401, it is determined whether the proxy area is switched. Specifically, the proxy discovery mechanism of the mobile IP can be used to discover a new proxy when the proxy area switches, so as to determine whether the proxy area is switched according to whether the proxy switches.

If the result of the determination in the step S401 is NO, it indicates that the proxy area has not been switched, and the mobile terminal is still in the original proxy area, and the process proceeds to step S400.

If the answer of the step S401 is YES, it indicates that the mobile terminal moves to another proxy area, and the current proxy of the mobile terminal automatically switches to the proxy of the another proxy area, and step S402 is performed.

In step S402, information of the current optimal data source is obtained. The current optimal data source refers to the data source closest to the current agent of the mobile terminal among all data sources including the service data resources required by the user.

In step S403, it is determined whether the current optimal data source is the same as the currently linked data source. If the decision result in the step S403 is YES, the process proceeds to a step S400. If the decision result in the step S403 is NO, the step S404 is executed.

In step S404, the downloaded information of the currently downloaded service data is extracted. Specifically, the downloaded information may include data amount information, duration information, downloaded location information, downloaded content information, and the like of the downloaded service data.

In step S405, a link request message is sent to the current optimal data source, and the link request message includes the downloaded information. After receiving the link request message, the current optimal data source may determine the data amount of the service data that the mobile terminal has downloaded according to the downloaded information included therein, and then forward the service data after the downloaded service data to the mobile terminal via the current agent of the mobile terminal. , that is, the service data requested by the mobile terminal that has not been downloaded yet.

In step S406, it is determined whether the link with the current optimal data source is successfully established. If the decision result in the step S406 is NO, the process proceeds to a step S400. If the decision result in the step S406 is YES, the step S407 is executed.

In step S407, the currently linked data source is disconnected, and the currently linked data source still refers to the data source for transmitting the service data in step S400, instead of the current optimal data source for newly establishing the link. In step S408, the service data is continuously downloaded from the current optimal data source according to the downloaded information in the link request message. Specifically, the service data may be continuously downloaded from the current optimal data source via the current agent, and the service data that continues to be downloaded does not include the downloaded service data.

After determining that the link with the current optimal data source is successfully established, then disconnecting the link with the original data source, and continuing to receive the service data from the current optimal data source, the failure to link with the current optimal data source can be avoided. The user experience is interrupted, improving the reliability of network access and the quality of the business experience.

Preferably, for step S302 or step S402, if the mobile terminal needs to obtain information of the current optimal data source from a management server deployed by the content provider (for example, a secondary server tracker of the P2P network), step S201 or step S402 includes: The server sends the current optimal data source request message; the receiving management server uses the information of the current optimal data source returned by the data source optimization technology such as the application layer traffic optimization technology. The current optimal data source request message may include location information of the current agent of the mobile terminal.

Common communication networks include network service providers (English: Internet Service Provider, ISP) network, content distribution network (English: Content Delivery Network, CDN) network, and peer-to-peer network (English: Point to Point, referred to as P2P) )Wait. The application of the service data downloading method shown in Figs. 2-4 in different communication networks will be described below with reference to Figs. 5-7.

Referring to FIG. 5, it is a flowchart of a service data downloading method based on an ISP network or a CDN network provided by the present invention.

For ISP networks, service providers deploy their own content servers in the ISP network and distribute their own business data on the deployed content servers. The business data on different content servers can be identical, partially identical, or completely different. The content server used here is the data source described above. The current optimal data source is the closest content server to the user (or current agent) deployed by the content provider in the ISP network. The method includes:

At step S500, the service data is received from the currently linked data source SA. Specifically, the currently located proxy area Area-A receives the requested service data from the currently linked data source SA via the current proxy PA, which is the optimal data source for the proxy PA. Before step S500, the method may include: sending a service request to the management server of the service provider, and linking to the data source closest to itself under the guidance of the management server. In step S501, it is determined whether the proxy area is switched.

If the result of the determination in the step S501 is NO, it indicates that the proxy area is not switched, and the mobile terminal is still in the original proxy area Area-A, and the process proceeds to step S500.

If the result of the determination in step S501 is YES, it indicates that the mobile terminal moves to another proxy area Area-B, and the current proxy of the mobile terminal automatically switches to the proxy P-B of the proxy area Area-B, and step S502 is performed.

In step S502, a current optimal data source request message is sent to the management server of the content provider. The current optimal data source request message may include the address of the current proxy P-B.

In step S503, the management server of the content provider receives information of the current optimal data source returned based on the application layer traffic optimization technology.

In step S504, it is determined whether the current optimal data source is the same as the currently linked data source S-A. If the answer of step S504 is YES, step S500 is continued. It should be noted that, when step S500 is performed at this time, the mobile terminal downloads the service data from the data source S-A via the current proxy P-B.

If the decision result in the step S504 is NO, the step S505 is executed. In step S505, the downloaded information of the currently downloaded service data is extracted. Specifically, the downloaded information may include data amount information, duration information, downloaded location information, downloaded content information, and the like of the downloaded service data.

In step S506, a link request message is sent to the current optimal data source S-B, and the link request message includes the downloaded information. After receiving the link request message, the current optimal data source SB may determine the data amount of the service data that the mobile terminal has downloaded according to the downloaded information included therein, and then forward the downloaded service data to the mobile terminal via the current proxy PB of the mobile terminal. The service data, that is, the service data requested by the mobile terminal that has not been downloaded yet.

In step S507, it is determined whether the link with the current optimal data source S-B is successfully established.

If the decision result in the step S507 is NO, the process proceeds to a step S500. It should be noted that, when step S500 is performed at this time, the mobile terminal downloads the service data from the data source S-A via the current proxy P-B.

If the decision result in the step S507 is YES, the step S508 is executed. In step S508, the data source S-A of the current link is disconnected.

At step 509, the service data is continuously downloaded from the current optimal data source SB according to the downloaded information in the link request. Specifically, the current optimal data source can be obtained from the current proxy PB. The SB downloads the business data, and the business data that continues to be downloaded does not include the downloaded business data.

For a CDN network, the service provider distributes its own service data on the server resources of the leased CDN operator. The service data on different server resources may be identical, partially identical, or completely different. The server resources used here are The data source described in this article. The current optimal data source is the server resource closest to the user (or current agent) of the content provider renting the CDN operator. See Figure 5 for the method flow.

Please refer to FIG. 6, which is a flowchart of a service data downloading method based on a P2P network with a secondary server Tracker provided by the present invention. Since the P2P network uses the same service data as the node uploads at the same time of downloading, in the P2P network, the above data source is another node that is uploading the same service data, also called peer. The current optimal data source is the preset number of nodes with the required business data and closest to the user (or current agent). A secondary server A tracker is a program that runs on a server that tracks how many nodes are downloading the same file at the same time. When the mobile terminal is connected to the Tracker server, it will get a list of nodes. According to the node list, it can automatically connect to other nodes for download. The method includes:

At step S600, service data is received from the currently linked N nodes. Specifically, the currently located proxy area Area-A downloads the requested service data from the currently linked N nodes via the current proxy P-A, which is the optimal data source for the proxy P-A. Before step S600, the method may include: sending a service request to the Tracker server, receiving, from the Tracker server, address information of the first N nodes having the service data and closest to the P-A, and then linking to the N nodes.

In step S601, it is determined whether the proxy area is switched.

If the result of the determination in the step S601 is NO, it indicates that the proxy area has not been switched, and the mobile terminal is still in the original proxy area Area-A, and the process proceeds to step S600. If the answer of step S601 is YES, it indicates that the mobile terminal moves to another proxy area Area-B, and the current proxy of the mobile terminal automatically switches to the proxy P-B of the proxy area Area-B, and step S602 is performed.

In step S602, the current optimal data source request message is sent to the Tracker server. The current optimal data source request message may include the address of the current proxy P-B.

In step S603, the information of the current optimal data source returned by the Tracker server based on the application layer traffic optimization technology is received.

In step S604, comparing N nodes in the current optimal data source with N nodes currently linked, Confirming the nodes included in the current optimal data source and the currently linked data source as class I nodes, and identifying the nodes included in the current optimal data source and not included in the currently linked data source as class II nodes, Nodes that are included in the currently linked data source and that are not included in the current optimal data source are identified as class m nodes.

In step S605, the downloaded information of the currently downloaded service data is extracted. Specifically, the downloaded information may include data amount information, duration information, downloaded location information, downloaded content information, and the like of the downloaded service data.

In step S606, a link request message is sent to the class II node, and the link request message includes the downloaded information. After receiving the link request message, the class II node may determine the data amount of the service data that the mobile terminal has downloaded according to the downloaded information contained therein, and then forward the service data after the downloaded service data to the mobile terminal via the current proxy PB of the mobile terminal, That is, the service data requested by the mobile terminal that has not been downloaded yet.

In step S607, it is sequentially determined whether the link with each class II node is successfully established, and each time a link with the class II node is successfully established, and a disconnection link is selected from the class III node according to a preset chain breaking algorithm. . For example, the de-chaining algorithm may include randomly selecting a class III node to disconnect the link, and may also include disconnecting the class III node that is farthest from the current agent P-B, or selecting the slowest class III node to disconnect the link.

In step S608, the service data is continuously downloaded from the class I node, the type II node that successfully establishes the link, and the class III node that still maintains the link according to the downloaded information in the link request. Specifically, the service data is continuously downloaded from the class I node, the type II node that successfully establishes the link, and the class III node that still maintains the link via the current agent P-B, and the service data that continues to be downloaded does not contain the downloaded service data.

Referring to FIG. 7 , it is a flowchart of a service data downloading method of a P2P network based on a distributed hash table (English: Distributed Hash Table, DWT) protocol provided by the present invention. Since the P2P network uses the method in which the node uploads the same service data at the same time of downloading, in the P2P network, the above data source is another node that is uploading the same service data, also called a peer. The current optimal data source is the preset number of nodes with the required business data and closest to the user (or current agent). DHT is a distributed storage method. Each client is responsible for a small range of routes and is responsible for storing a small amount of service data without the need for a server, thereby enabling addressing and storage of the entire DHT network. In the case of not connecting to the Tracker server at all Under the DHT protocol, the business data can also be downloaded very well, because it can find other users downloading the same file in the network, and realize the same function as connecting the Tracker server. The method includes: receiving, at step S700, service data from N nodes currently linked. Specifically, the currently located proxy area Area-A downloads the requested service data from the currently linked N nodes via the current proxy PA, which are the optimal data source for the proxy PA. Before step S700, the method may include: searching for a node having the service data by using a DHT protocol, and sorting the nodes, searching for address information of the first N nodes that are optimal (for example, closest to the PA), and then linking to the N node.

In step S701, it is determined whether the proxy area is switched.

If the result of the determination in the step S701 is NO, it indicates that the proxy area is not switched, and the mobile terminal is still in the original proxy area Area-A, and the process proceeds to step S700. If the answer of the step S701 is YES, it indicates that the mobile terminal moves to another proxy area Area-B, and the current proxy of the mobile terminal automatically switches to the proxy P-B of the proxy area Area-B, and step S702 is performed.

In step S702, information of the current optimal data source is obtained through the DHT protocol.

In step S703, the N nodes in the current optimal data source are compared with the currently linked N nodes, and the nodes included in the current optimal data source and the currently linked data source are confirmed as class I nodes, and the current most A node that is included in the data source and is not included in the currently linked data source is identified as a class II node, and the node included in the currently linked data source and not included in the current optimal data source is confirmed as a class III node.

At step S704, the downloaded information of the currently downloaded service data is extracted. Specifically, the downloaded information may include data amount information, duration information, downloaded location information, downloaded content information, and the like of the downloaded service data.

In step S705, a link request message is sent to the class II node, and the link request message includes the downloaded information. After receiving the link request message, the class II node may determine the data amount of the service data that the mobile terminal has downloaded according to the downloaded information contained therein, and then forward the service data after the downloaded service data to the mobile terminal via the current proxy PB of the mobile terminal, That is, the service data requested by the mobile terminal that has not been downloaded yet.

In step S706, it is sequentially determined whether the link with each type II node is successfully established, and each time a link with the class II node is successfully established, and a disconnection link is selected from the class III node according to a preset de-chaining algorithm. . For example, the chain splitting algorithm may include randomly selecting a class III node to break the link, It may also include selecting a class III node that is farthest from the current agent PB to disconnect the link, or selecting the class III node with the slowest upload speed to disconnect the link.

In step S707, the service data is continuously downloaded from the class I node, the type II node that successfully establishes the link, and the class III node that still maintains the link according to the downloaded information in the link request. Specifically, the service data is continuously downloaded from the class I node, the type II node that successfully establishes the link, and the class III node that still maintains the link via the current agent P-B, and the service data that continues to be downloaded does not contain the downloaded service data.

FIG. 8 is a schematic structural diagram of a first embodiment of a mobile terminal provided by the present invention, where the mobile terminal includes:

The area switching determining module 810 is configured to determine whether a proxy area switch is found. In the communication network, in order to ensure the communication quality, many proxy agents are deployed. The network area covered by each agent can be called a proxy area. When the mobile terminal enters a certain proxy area, it needs to access the network via the proxy of the proxy area. . Specifically, the area handover judging module 810 can discover a new proxy when the proxy area is switched by using the proxy discovery mechanism of the mobile IP, thereby determining whether the proxy area is switched according to whether the proxy is switched.

The current optimal data source obtaining module 820 is configured to: when the downloading module 830 downloads the service data from the currently linked data source, if the area switching determining module 810 finds the proxy area switching, the information of the current optimal data source is obtained. The current optimal data source refers to the data source closest to the current agent of the mobile terminal among all data sources containing the service data resources required by the user. When the user needs to access the network to initiate a service request (such as video viewing, file downloading, etc.), the application layer traffic optimization technology or other similar technology can obtain the current optimal data source information and pass the current proxy A direction. The current optimal data source requests service data. If the link is successfully established with the current optimal data source, then the current optimal data source is the data source currently linked by the mobile terminal. The mobile terminal downloads the required service data from the currently linked data source through the current proxy A. In the process of downloading the service data, if the mobile terminal switches to another proxy area due to the mobile, the proxy of the mobile terminal also switches. Agent B, which is another proxy area, becomes the current agent of the mobile terminal. Since the current proxy for forwarding data has changed, the currently linked data source may no longer be the current best-performing data source, and the mobile terminal re-acquires the information of the current optimal data source.

The data source comparison module 830 is configured to compare the current optimal data source with the currently linked data source. The downloading module 840 is configured to: when the current optimal data source is different from the currently linked data source, The pre-optimal data source sends a link request message and continues to download the service data from the current optimal data source. Specifically, after the data source comparison module 820 compares the obtained current optimal data source with the currently linked data source, if the current optimal data source is the same as the currently linked data source, the download module 830 still proceeds from the current proxy B. The currently linked data source downloads the service data. If the current optimal data source is different from the currently linked data source, the download module 830 establishes a link with the current optimal data source, and continues to download from the current optimal data source via the current proxy B. Business data is required.

The mobile terminal provided by the embodiment of the present invention can avoid avoiding the proxy area in the mobile IP route optimization mode even if the mobile terminal is far away from the proxy area when the service request is initiated, by dynamically linking to the current optimal data source when the proxy area is switched. When the service data is downloaded from the optimal data source corresponding to the location when the service request is initiated, the network traffic is reduced, and the communication quality is improved.

In the embodiment shown in FIG. 8, if the data source needs to be switched during the process of downloading the service data, since a part of the service data has been downloaded, the remaining service data can be re-downloaded from the current optimal data source starting from the interruption point. This preferred embodiment is shown in FIG. FIG. 9 is a schematic structural diagram of a second embodiment of a mobile terminal provided by the present invention. The mobile terminal includes an area switching determining module 810, a current optimal data source obtaining module 820, a data source comparing module 830, and a downloading module 840. The module 840 specifically includes a downloaded information extraction module 841, a link request sending module 842, and a data receiving module 843.

The downloaded information extraction module 841 is configured to extract the downloaded information of the currently downloaded service data when the determination result of the data source comparison module 830 is negative. Specifically, the downloaded information may include data amount information, duration information, downloaded location information, downloaded content information, and the like of the downloaded service data.

The link request sending module 842 is configured to send a link request message to the current optimal data source, where the link request message includes the downloaded information. After receiving the link request message, the current optimal data source may determine the data amount of the service data that the mobile terminal has downloaded according to the downloaded information included therein, and then forward the service data after the downloaded service data to the mobile terminal via the current agent of the mobile terminal. , that is, the service data requested by the mobile terminal that has not been downloaded yet.

The data receiving module 843 is configured to download the service data from the current optimal data source according to the downloaded information in the link request message. Specifically, the data receiving module 843 can download the service data from the current optimal data source via the current agent. When the linked data source is switched, the data receiving module 843 downloads the service data from the newly linked data source without including the data source from the original link. Downloaded business data.

In the embodiment shown in FIG. 9, the link may not be successfully established with the current optimal data source due to the communication environment. In order to ensure the smoothness of the downloaded service data, it is necessary to determine whether the link is successfully established. Show. 10 is a schematic structural diagram of a third embodiment of a mobile terminal provided by the present invention. The mobile terminal includes an area switching determining module 810, a current optimal data source obtaining module 820, a data source comparing module 830, a downloading module 840, and a link. The determining module 850 specifically includes a downloaded information extracting module 841, a link request sending module 842, and a data receiving module 843.

The link determining module 850 is configured to determine whether the link between the current optimal data source obtained by the current optimal data source obtaining module 820 is successfully established. The link judging module 850 notifies the data receiving module 843 to continue to download the service data from the currently linked data source via the current proxy when the determination result is no, where the currently linked data source refers to the originally linked data source instead of the newly established link. Current optimal data source. The link judging module 850 notifies the data receiving module 843 to disconnect from the originally linked data source when the judgment result is YES, and continues to receive the service data from the newly linked current optimal data source.

Common communication networks include ISP networks, CDN networks, P2P networks, etc. In a particular communication network, the mobile terminal shown in any of Figures 8-10 can perform the method illustrated in Figures 5-7.

In the ISP network or the CDN network, the current optimal data source obtaining module 810 specifically includes: a current optimal data source request message sending module, configured to send a current optimal data source request message to the management server; and the current optimal data source information receiving The module is configured to receive information about a current optimal data source returned by the management server using a data source optimization technique such as application layer traffic optimization technology. The current optimal data source request message may include location information of the current agent of the mobile terminal.

In the P2P network including the secondary server tracker, the current optimal data source obtaining module 810 The method includes: a current optimal data source request message sending module, configured to send a current optimal data source request message to the secondary server tracker; and a current optimal data source information receiving module, configured to receive the current optimal data source returned by the auxiliary server tracker information. The current optimal data source request message may include location information of the current agent of the mobile terminal.

In the P2P network running the DHT, the current optimal data source obtaining module 810 includes: a protocol running module, configured to obtain information of the current optimal data source through the distributed hash table protocol.

In the P2P network, the data source comparison module 830 includes: a node comparison module, configured to compare the currently linked node with a node included in the current optimal data source, notify the download module to maintain a link with the same node, and A node that is included in the optimal data source but is not included in the currently linked node sends a link request message. The downloading module 840 includes a link management module, configured to, after successfully establishing a link with a node that is not included in the node currently included in the current optimal data source, from the currently linked node according to a preset splitting algorithm Select a node that is not included in the current optimal data source and disconnect from the selected node.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, or a read-only storage memory (Read-Only)

Memory, ROM) or random access memory (RAM).

The above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and those skilled in the art can understand all or part of the process of implementing the above embodiments, and according to the present invention. The equivalent changes required are still within the scope of the invention.

Claims

Rights request

A method for downloading business data, comprising:

The service data downloading method according to claim 1, wherein the step of transmitting a link request message to the current optimal data source, and continuing to download the service data from the current optimal data source comprises specifically :

Extract the downloaded information of the currently downloaded business data;

Sending a link request message to the current optimal data source, where the link request message includes the downloaded information;

The service data is continuously downloaded from the current optimal data source according to the downloaded information in the link request message.

The service data downloading method according to claim 1 or 2, wherein the sending the link request message to the current optimal data source further comprises:

Determining whether the link between the current optimal data source is successfully established, and if the determination is yes, disconnecting from the currently linked data source; if the determination is no, continuing the data source from the current link Download the business data.

The service data downloading method according to claim 3, wherein in the network service provider network, the current optimal data source is a content server that is deployed by the content provider and is closest to the user.

The service data downloading method according to claim 3, wherein in the content delivery network, the current optimal data source is a server resource that is rented by the content provider to the content delivery network operator and is closest to the user.

The method for downloading the service data according to claim 4 or 5, wherein the step of obtaining the information of the current optimal data source comprises:

Sending a current optimal data source request message to the management server;

Receive information about the current optimal data source returned by the management server.

7. The service data downloading method according to claim 3, wherein in the peer-to-peer network, the current optimal data source comprises a node having the service data and a preset number closest to the user.

The service data downloading method according to claim 7, wherein the point-to-point network includes a secondary server tracker, and the step of acquiring information of the current optimal data source specifically includes: sending current optimal data to the secondary server tracker Source request message

Receive information about the current optimal data source returned by the secondary server Tracker.

The service data downloading method according to claim 6 or 8, wherein the current optimal data source request message includes an address of a current agent.

The method for downloading the service data according to claim 7, wherein the step of acquiring the information of the current optimal data source in the peer-to-peer network running the distributed hash table protocol includes:

The information of the current optimal data source is obtained through a distributed hash table protocol.

The method for downloading a service data according to claim 8 or 10, wherein the step of sending a link request message to the current optimal data source specifically includes:

Comparing the currently linked node with the node included in the current optimal data source, maintaining a link with the same node, and sending a link request message to the node included in the current optimal data source but not included in the currently linked node.

12. The service data downloading method according to claim 11, wherein: The steps of the previously linked data source to disconnect the link specifically include:

After successfully establishing a link with a node that is not included in the currently-linked node included in the current optimal data source, selecting one of the currently linked nodes according to a preset splitting algorithm is not included in the current optimal data source. In the node, disconnect the link to the selected node.

13. A mobile terminal, comprising:

The mobile terminal according to claim 13, wherein the downloading module specifically includes:

The downloaded information extraction module is configured to extract the downloaded information of the currently downloaded service data, and the link request sending module is configured to send a link request message to the current optimal data source, where the link request message includes the downloaded information;

And a data receiving module, configured to continue downloading the service data from the current optimal data source according to the downloaded information in the link request message.

The mobile terminal according to claim 13 or 14, wherein the mobile terminal further comprises:

a link determining module, configured to determine whether a link with the current optimal data source is successfully established, and if the determination is yes, notify the downloading module to disconnect from the currently linked data source; if the determination is no, Notifying the download module to continue downloading the business data from the currently linked data source.

The mobile terminal according to claim 15, wherein in the network service provider network or the content delivery network, the current optimal data source obtaining module comprises: The current optimal data source request message sending module is configured to send a current optimal data source request message to the management server;

The current optimal data source information receiving module is configured to receive information about a current optimal data source returned by the management server.

The mobile terminal according to claim 15, wherein in the peer-to-peer network including the auxiliary server tracker, the current optimal data source obtaining module includes:

The current optimal data source request message sending module is configured to send a current optimal data source request message to the secondary server Tracker;

The current optimal data source information receiving module is configured to receive information about the current optimal data source returned by the auxiliary server Tracker.

The mobile terminal according to claim 16 or 17, wherein the current optimal data source request message includes an address of a current proxy.

The mobile terminal according to claim 15, wherein in the peer-to-peer network running the distributed hash table protocol, the current optimal data source obtaining module includes:

The protocol running module is configured to obtain information about a current optimal data source by using a distributed hash table protocol.

The mobile terminal according to claim 15, wherein in the peer-to-peer network, the data source comparison module comprises:

a node comparison module, configured to compare the currently linked node with the node included in the current optimal data source, notify the download module to maintain a link with the same node, and to the node currently included in the current optimal data source but currently linked A node that is not included sends a link request message.

The mobile terminal according to claim 20, wherein the downloading module comprises: a link management module, configured to be included in a node that is successfully included with a currently optimal data source and is currently included in the link After the node establishes a link, a node that is not included in the current optimal data source is selected from the currently linked nodes according to a preset splitting algorithm, and the link with the selected node is disconnected.