WO2011017970A1 - Method and system for downloading resource based on multi-mode mobile terminal - Google Patents

Abstract

A method for downloading resource based on the multi-mode mobile terminal is disclosed in the present invention, which comprises the following steps: the multi-mode mobile terminal accesses each single-mode network, and establishes the data service physical connection with each single-mode network; when deciding that a resource download server supports the download resume for the required resource, the multi-mode mobile terminal downloads the required resource in the manner of the download resume though each single-mode network. A system for downloading resource based on the multi-mode mobile terminal is also disclosed in the present invention. Based on the method and system, the resource can be simultaneously downloaded from a plurality of single-mode networks when the multi-mode mobile terminal is utilized to download data, and therefore the download speed for the resource can be maximum.

Description

 Resource downloading method and system based on multi-mode mobile terminal

 The present invention relates to the field of mobile communications, and more particularly to a resource downloading method and system based on a multimode mobile terminal. Background technique

 Today's era is an era in which multiple communication networks coexist, including: Personal handheld telephone systems

(PHS, Personal Handy-phone System), Global System for Mobile Communications (GSM), EDGE (Enhanced Data Rate for GSM Evolution), Code Division Multiple Access (CDMA, Code) Division Multiple Access) 2000, Wideband Code Division Multiple Access (WCDMA), Time Division-Synchronous Code Division Multiple Access (TD-SCDMA), Worldwide Interoperability for Microwave Access (WIMAX, Worldwide) Interoperability for Microwave Access), wireless fidelity (WIFI, Wireless Fidelity) and other communication networks. A multi-mode mobile terminal can support simultaneous access to two or more communication networks, that is, can support simultaneous access to multiple single-mode networks. In this case, an important issue is how to effectively utilize resources of multiple single-mode networks.

 Mobile terminal services can be broadly classified into two categories: circuit switched (CS) data services and data exchange (PS) data services. CS data services mainly include voice calls; PS data services mainly include various types of data transmission and reception, such as browser Internet access and resource downloading. At present, the concern is how to make full use of multiple single-mode network resources when using PS data service to download resources on multi-mode mobile terminals.

Generally, the speed of downloading resources through the mobile terminal is relatively slow, which is limited by the bandwidth of the current mobile communication network. For example, the transmission rate of the CS data service is only 9.6 kbps, which is only suitable for a small amount. The slower data transmission service; High Speed Circuit Switched Data (HSCSD, High Speed Circuit Switched Data) can achieve a transmission speed of 57.6 kbps. The most widely used General Packet Radio Service (GPRS) has a transmission speed of up to 115 kbps; a higher-speed wireless mobile communication network, such as the enhanced data rate GSM evolution technology (EGPRS) that takes GPRS functions to the limit. , Enhanced Data Rate for GSM Evolution ) and 3G networks, the speed of wireless downloads can reach 384kbps to 2Mbps; although the download speed supported by a single-standard communication network reaches a certain height, there are still dozens of M or even larger It takes a long time to download the file.

 At present, when a multi-mode mobile terminal is used to download resources, the user can only select a network that is connected to a standard system, that is, a single-mode network. Generally, the user selects a single-mode network with a larger bandwidth and better network quality. Although the method can make the download of resources reach a faster speed as much as possible, this download method also wastes the advantage of the multi-mode mobile terminal, that is, cannot download resources from multiple single-mode networks at the same time, and make the download speed. The fastest. Summary of the invention

 In view of this, the main object of the present invention is to provide a resource downloading method and system based on a multi-mode mobile terminal, which can download resources from multiple single-mode networks at the same time when downloading data by using a multi-mode mobile terminal, so that the download speed is maximized. fast.

 In order to achieve the above objective, in one aspect, a resource downloading method based on a multimode mobile terminal is provided, the method comprising:

 The multi-mode mobile terminal accesses each single-mode network, and establishes a physical connection with the data services of the single-mode networks;

 When the multi-mode mobile terminal determines that the resource download server supports the resume transmission of the required resources, the multi-mode mobile terminal performs downloading of the required resources by using the single-mode network in a resume mode.

In another aspect, a resource downloading system based on a multi-mode mobile terminal is provided, the system comprising: An access module, configured to enable a multimode mobile terminal to access each single mode network;

 a connection module, configured to establish a physical connection with the data service of each single-mode network after the multi-mode mobile terminal accesses each single-mode network;

 a judging module, configured to determine, after the multi-mode mobile terminal establishes a physical connection with the data service of each single-mode network, the resource download server supports a breakpoint transmission of the required resources;

 The resource downloading module is configured to perform downloading of the required resources by using the single-mode network in a breakpoint retransmission manner when the resource downloading server supports the resuming of the required resources.

 The resource downloading scheme based on the multi-mode mobile terminal of the present invention, when the multi-mode mobile terminal determines that the resource downloading server supports the resume transmission of the required resources, the cooperative transmission is performed through each single-mode network, and the multi-threading and the breakpoint are resumed. The way to perform the download of the required resources; thus, the data downloading capability of each single-mode network supported by the multi-mode terminal can be fully utilized to realize the downloading of the resources; meanwhile, the multi-threading and downloading of the breakpoints can be performed. Effectively save download time and system overhead.

 In addition, if the download environment of a single-mode network is not good, such as the signal quality is not good, the download connection of the data is invalid, you can also download this part of the resources through a simple single-mode network with a good download environment, so that you can maximize the Increase the download speed of your data to the fastest. DRAWINGS

 1 is a schematic flowchart of a resource downloading method based on a multi-mode mobile terminal according to the present invention; FIG. 2 is a schematic flowchart of a resource downloading method according to an embodiment of the present invention;

 FIG. 3 is a schematic flowchart of determining a maximum number of single-mode downloading threads of a multi-mode mobile terminal according to the present invention; FIG. 4 is a schematic structural diagram of a resource downloading system based on a multi-mode mobile terminal according to the present invention. detailed description

The technical solutions of the present invention are further elaborated below in conjunction with the accompanying drawings and specific embodiments. The multimode mobile terminal referred to in the present invention refers to a mobile terminal suitable for a communication network of different standards, and the communication system of a single standard is referred to as a single mode network supported by the multimode mobile terminal, The communication network that the multimode mobile terminal can support can be any combination of PHS, GSM, EDGE, CDMA2000, WCDMA, TD-SCDMA, WIMAX and WIFI.

 The method for downloading resources based on the multi-mode mobile terminal of the present invention is as shown in FIG. 1. The method includes the following steps: Step 101: A multi-mode mobile terminal accesses each single-mode network, and establishes a physical connection with a data service of each single-mode network.

 Step 102: When the multi-mode mobile terminal determines that the resource download server supports the breakpoint transmission of the required resources, the multi-mode mobile terminal performs downloading of the required resources by means of each single-mode network in a resumed manner.

 The specific implementation will be illustrated by the embodiment shown in FIG. 2, including:

 Step 1: The multi-mode mobile terminal accesses each single-mode network and establishes a physical connection with the data service of each single-mode network.

 First, the multimode mobile terminal needs to determine which network systems it supports, and determine what the standard downlink data transmission rate theoretically supported by the communication network of the standard is. These parameters are generally preset, for multimode mobile. The terminal is known by default. The present invention takes a multimode mobile terminal to support two types of communication networks (i.e., dual mode mobile terminals) as an example.

 For example, when the single-mode network supported by the dual-mode mobile terminal is a GSM network and a TD-SCDMA network, the standard downlink data transmission rate of the GSM network is 9.6 kbps, and the standard downlink data transmission rate of the TD-SCDMA network is 384 kbps, and the TD-SCDMA network can be known. The data transmission rate is greater than the GSM network.

The dual-mode mobile terminal accesses two single-mode networks (network A, network B) at the same time, and establishes a physical connection with the data services of network A and network B, respectively, and acquires the IP address A and network B assigned by network A for it. Its assigned IP address B. Specifically, the manner in which the mobile terminal accesses the network A and the network B varies according to the systems of the network A and the network B. For example, when the mobile terminal accesses the network with the GSM or EDGE system, the terminal can be dialed by a modem command language AT command. In the way, after dialing successfully, you can call the point-to-point protocol (PPPD) program of your own operating system, using point-to-point (Ρ2Ρ, point to point) After the access is successful, the network assigns an IP address to the mobile terminal. Specifically, the implementation of the network for assigning an IP address to the mobile terminal is a prior art, and details are not described herein again.

 Step 2~3, it is determined whether the resource download server supports the resume transmission of the required resources. If not, perform step 3, select the single-mode network with the largest data transmission rate, and execute the resource download; if yes, go to step 4.

 The mobile terminal can send a download request for a partial resource to the resource download server through the Range parameter of the HTTP (Hypertext Transfer Protocol) protocol header, and determine whether to support the breakpoint of the current resource through the reply message of the resource download server. pass. It should be noted that the mobile terminal can send the request to the resource download server through any single mode network it supports.

 For example, download a resource named test.zip and a size of 5MB from the resource download server whose domain name is www.abc.com. Assume that the mobile terminal needs to start downloading from the specified breakpoint of the resource, such as downloading from 1MB. Then, the mobile terminal can send a request for downloading the resource after 1 MB to the resource download server by using the Range parameter of the HTTP protocol header, and the specific content of the request is as follows: GET/test.zi HTTP/1.0

 RANGE: bytes=1024000-

Accept:text/html,image/gif,image/jpeg,*;q=.2,*/*;q=.2

 Where GET/test.zip indicates the name of the resource; "RANGE:bytes=1024000-," indicates the resource after the mobile terminal requests to download the file 1MB.

 The information returned by the resource download server determines whether the resource download server supports the resume transmission of the current resource. If the resume transmission is not supported, the following information is returned:

 200

 Content-Length=5070000

 Accept-Ranges=bytes

 Date=Thu, 2 Apr 2009 12:56: 11 GMT

ETag=W/"02ca57el73cl 1 :95b" Content-Type=application/octet-stream

 Server=Microsoft-IIS/5.0

 Last-Modified= Thu, 2 Apr 2009 12:56: 11 GMT

 If the breakpoint resume is supported, the following information is returned:

 206

 Content-Length=5070000

 Content-Range=bytes 1024000-5070000/5070000

 Date= Thu, 2 Apr 2009 12:55:20 GMT

 ETag=W/"02ca57el73cl 1 :95b"

 Content-Type=application/octet-stream

 Server=Microsoft-IIS/5.0

 Last-Modified= Thu, 2 Apr 2009 12:55:20 GMT

 Comparing the information corresponding to the support of the resume of the breakpoint with the information corresponding to the support of the resume of the breakpoint can be found that the information corresponding to the support of the resume of the breakpoint is added by one line:

 Content-Range=bytes 1024000-5070000/5070000 , because the size of the file is

5MB, so the statement indicates support for downloading from 1MB to 5MB of data; in addition, the returned code is also changed from 200 to 206, which indicates that the resource download server supports the breakpoint resuming function.

 If the resource download server does not support the resuming of the current resource, the resource download server does not support downloading the data segment by multi-threading at the same time. In step 3, the data transmission rate is selected to be the largest. Single-mode network (assuming network A's data transmission rate is greater than network B, network A is selected), and the resource is downloaded: The mobile terminal allocates its own IP address A based on network A, and creates a socket connection with network A (the connection is a single-threaded connection, for downloading a resource, and then the mobile terminal sends a request for downloading the complete resource of the file to the resource download server through the network A; the resource download server returns a resource to the mobile terminal through the socket connection of the network A, until the The resource download is complete and the process ends.

The request for downloading the complete resource sent by the mobile terminal to the resource download server (the resource name requested to be downloaded is test.zip) is as follows: GET/test.zip HTTP/ 1.1

 Accept:image/gif,image/x-xbitmap,image/jpeg,image/pjpeg,

 Application/vnd.ms- excel,application/msword,application/vnd.ms-powerpoint,*/*

 Accept-Language: zh-cn

 Accept-Encoding: gzip, deflate

 Connection: Keep-Alive

 If the resource download server supports the breakpoint transmission of the resource, it indicates that the resource can be downloaded by using multiple threads simultaneously downloading each data segment (that is, the multi-thread mode of the resume of the breakpoint) to download the resource. .

 Step 4: Determine the maximum number of download threads MAX in each single-mode network, and create a MAX download thread in each single-mode network in the process.

Generally, in order to provide a resource download service to more users, the resource download server will have the same IP address (the IP address of a single mode network corresponding to a multimode mobile terminal in the present invention, such as an IP address A or an IP address. B) The download connection requested to be established has a limit on the number (one download thread for each download connection, then the maximum number of download threads is determined here), and the data transfer rate of each download connection is limited. For example, the resource download server allows only one mobile terminal to create up to five download connections based on one IP address, corresponding to five download threads, that is, the maximum number of download threads is 5, and the data transfer rate of each download connection is limited to 10 kbps; Without considering the current network standard for data transmission rate limitation, the mobile terminal can download resources at a rate of up to 5x10 kbps. In addition, considering the hardware resource configuration and resource downloading efficiency of the mobile terminal, the downloading thread cannot be opened too much, which brings a large system overhead, so the multi-mode mobile terminal itself needs to specify the maximum under the single-mode network. The number of download threads MAXTHREADS, MAXTHREADS is determined as an empirical value. In practical applications, the maximum number of download threads MAX and MAXTHREADS that can be created by a multimode mobile terminal in a single-mode network may be inconsistent. Therefore, multimode mobile terminals first need to determine MAX. The value of the MAX strip download thread is created during the process of determining MAX.

 Specifically, the maximum number of download threads under the single-mode network is determined, and the MAX download line can be created by using the process shown in FIG. 3:

 Step 301, the mobile terminal initializes the number of download threads 1=1;

 Step 302: Create a socket connection (ie, download thread) based on the IP address allocated by the single mode network, to connect to the resource download server.

 Step 303: Determine whether the connection is successful. If no, go to step 304; if yes, go to step 305.

 If the connection is successful, the socket connection (ie the download thread) is created successfully.

 Step 304: Determine that the current number of download threads I is MAX, and the process ends.

 Step 305: Determine whether the current download thread number I is smaller than the maximum number of download threads MAXTHREADS in the single-mode network specified by the mobile terminal itself. If no, execute step 304, indicating that the current download thread number I is MAX, and the process ends; If yes, go to step 306; Step 306, when the current download thread number I is less than the maximum number of download threads MAXTHREADS, the current download thread number I is incremented by 1, and then return to step 302 until it is determined that the current download thread number I is MAX.

 It can be seen that the multi-mode mobile terminal also completes the creation of the MAX download thread while determining the MAX download thread. In general, the MAX values under each single-mode network are the same. In practical applications, the MAX value under a single-mode network may also be 1, that is, single-threaded.

 Step 5: Determine whether the resource has been partially downloaded in the multi-mode mobile terminal. If no, go to step 6. If yes, go to step 7.

 According to the storage condition of the current resource by the mobile terminal, it can be known whether part of the data of the resource has been downloaded. If not, go to step 6; if yes, go to step 7.

In step 6, the complete resource is requested, and the resource data segment respectively requested by each downloading thread is allocated, and step 8 is performed. The mobile terminal needs to download the complete resource. First, the data segment requested by each download thread needs to be allocated according to the size of the resource, the maximum number of download threads MAX under each single-mode network, and the standard downlink data transmission rate under each single-mode network. Specifically, the following allocation policy may be adopted: setting the requested resource size (the complete resource in this step) to ^, the mobile terminal supporting the network A and the network B in the dual-mode mobile terminal, and the standard downlink data transmission rate under the network A For example, the standard downlink data transmission rate under network B is i V _A /V _B = P.

 The size of the resource that can be requested through the network A is: The size of the resource that each download thread can request under the network A is: {Sx^/^ + l^/MAX;

 The size of the resource that can be requested through network B is: 57 (Ρ + 1), and the size of the resource that each download thread can request under the network is: [57 ( Ρ + 1 )] / MAX.

 For example, the format of network A is GSM, the standard downlink data transmission rate = 9.6^^; the format of network B is TD-SCDMA, the standard downlink data transmission rate = 384; w; the total requested resource size S is 5MB; MAX is 5, Then: P = 9.6/384 = 0.025.

 The size of the resource that can be requested through network A is: 5*[0.025/(0.025+l)]MB = 0.12MB, and the resource size that each download thread can request under network A is: 0.12/5MB=0.024MB;

 The resource size that can be requested through network B is: 5/(0.025+1)ΜΒ = 4.88ΜΒ, the resource size that each download thread can request under network B is: 4.88/5MB=0.976MB.

 According to the resource size requested by each download thread, the data segment requested by each thread can be calculated (indicated by the starting point, such as the data segment requested by a certain downloading thread is 0MB~0.024MB); then the mobile terminal creates a corresponding download thread. A partial resource download request, and the request is sent to the resource download server through each download thread. The download request for some resources may use the download request format for some resources described in step 2. The specific resource name, size (starting point) and other information are different according to actual conditions.

Step 7, requesting the undownloaded part of the resource, and allocating the resource data separately requested by each downloading thread Paragraph, go to step 8.

 The specific implementation of this step is the same as that of step 6, and will not be described here. The difference is that step 6 requests a complete resource, in which the current resource has already been downloaded a part, so this step indicates the size of the resource that was not downloaded.

 Step 8. Receive and store the resources returned by the resource download server in a file block manner through each download thread.

 When receiving the download request of the partial resources sent by each downloading thread, the resource server returns corresponding resources to each downloading thread through the mobile communication network; each downloading thread receives and saves the resources returned by the resource downloading server in a file block manner.

 Step 9. When a download thread of a single-mode network completes the downloading of the resource, it is determined whether all the downloading threads in the single-mode network complete the resource downloading. If yes, go to step 10; if no, go back to step 8.

 When a download thread of a single-mode network completes the resource download, it is determined whether all the MAX download threads under the single-mode network complete the resource download; if yes, go to step 10; if no, continue to step 8 and continue downloading. The resource that was not downloaded.

 Steps 10 to 11 determine whether the download of all the requested resources is completed. If yes, the resource download is completed, and the process ends; if no, go to step 12.

 If all download threads in all single-mode networks complete the resource download, all the resources requested by the mobile terminal are downloaded, and the process ends; otherwise, step 12 is performed.

 Step 12: Determine whether the download thread of the uncompleted single-mode network of other resources is valid, and if yes, perform step 8; if no, go to step 13.

In this case, it is necessary to determine whether the download connection (ie, the download thread) of the single-mode network that the resource download is not completed is valid. If it is valid, the resource download can be continued, and step 8 is performed; if invalid, the signal quality problem exists in the single-mode network. Or other problems affecting resource downloading. At this point, you can release the download connection of the single-mode network, and go to Step 13. Step 13: Download the undownloaded resource in the single-mode network with invalid thread by downloading the completed single-mode network.

 When the download thread of the single-mode network is invalid in step 12, the download thread of the single-mode network is released (corresponding to the download connection), and the resource download is stopped; the size of the resource that has been downloaded by the single-mode network is confirmed (it is possible that the single-mode network downloads a part of the network) After the resource is invalid, the download connection is invalid due to the signal quality, etc., and the download thread of the single-mode network based on the download is created according to the undownloaded resource, and the download of the resource is performed, as in step 7, and will not be described again, and then returned. Go to step 8, until the resource download is complete, the process ends.

 In order to implement the above method, the present invention further provides a resource downloading system, which is applicable to a multi-mode mobile terminal. As shown in FIG. 4, the method includes:

 The access module 10 is configured to enable the multi-mode mobile terminal to access each single-mode network.

 The connection module 20 is configured to establish a physical connection with a data service of each single-mode network after the multi-mode mobile terminal accesses each single-mode network;

 The determining module 30 is configured to determine, after the multi-mode mobile terminal establishes a physical service connection with each of the single-mode networks, that the resource download server supports a breakpoint transmission of the required resources;

 The resource downloading module 40 is configured to perform downloading of the required resources by means of each single-mode network in a resumed manner when the resource downloading server supports the resuming of the required resources.

 The resource downloading module 40 is further configured to perform downloading of the required resources in a multi-threaded manner when performing downloading of the required resources in a manner of resumed by a breakpoint;

 The determining module 30 is further configured to: determine that the resource download server does not support the resume transmission of the required resources; and correspondingly, the resource downloading module 40 is further configured to select, from each single-mode network, a single-mode network with the largest data transmission rate. The download of the required resources is performed through the selected single mode network.

 The judging module 30 is further configured to: when the resource downloading of the single-mode network is completed, determine whether the download thread of the other unmode-downloaded single-mode network is valid;

Correspondingly, the resource downloading module 40 is further configured to: according to the result of the determining module 30, When the determination is invalid, the download thread of the single-mode network that has not completed the download is released, and the undownloaded resource in the single-mode network with invalid thread is requested to be downloaded through the downloaded single-mode network.

 The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim  A method for downloading resources based on a multi-mode mobile terminal, the method comprising: the multi-mode mobile terminal accessing each single-mode network, and establishing a physical connection with the data services of the single-mode networks;  When the multi-mode mobile terminal determines that the resource download server supports the resume transmission of the required resources, the multi-mode mobile terminal performs downloading of the required resources by using the single-mode network in a resume mode.  The method for downloading resources of a multi-mode mobile terminal according to claim 1, wherein after the multi-mode mobile terminal establishes a physical connection with the data service of each single-mode network, the method further includes: acquiring the single-mode The IP address assigned by the network to itself.  The method for downloading resources of a multi-mode mobile terminal according to claim 2, wherein the method further comprises: when the multi-mode mobile terminal determines that the resource download server does not support the resume transmission of the required resources, the method further includes The multimode mobile terminal selects a single mode network with the highest data transmission rate from the single mode networks, and performs downloading of required resources through the selected single mode network.  The method for downloading a resource based on a multi-mode mobile terminal according to claim 2, wherein the method further comprises: the multi-mode mobile terminal performing resource downloading in a multi-thread manner through the single-mode network;  Correspondingly, the multi-mode mobile terminal performs resource downloading by using the single-mode network in a multi-threaded manner of resumed transmission, specifically:  The multi-mode mobile terminal determines a maximum number of download threads MAX in each single-mode network, and creates a MAX download thread based on each single-mode network according to the acquired IP address;  Determining whether the required resource has been partially downloaded in the multi-mode mobile terminal, and if so, the multi-mode mobile terminal requests the undownloaded portion of the resource from the resource download server through each downloading thread; otherwise, the multi-mode mobile terminal passes each The download thread requests the resource download server to download the complete resource; The multi-mode mobile terminal receives the file block through each download thread, and stores the resource The resource returned by the server.  The method for downloading resources based on a multi-mode mobile terminal according to claim 4, wherein the multi-mode mobile terminal determines a maximum number of download threads MAX in each single-mode network, and is created according to the IP address. Based on the MAX strip download threads of each single-mode network, specifically:  Multi-mode mobile terminal initialization download thread number 1=1;  Creating a socket connection to the resource download server according to the IP address allocated by the current single mode network; when the connection resource download server fails, the download thread creation fails, determining that the current download thread number I is the MAX; Upon success, the download thread is successfully created, and it is determined whether the current download thread number I is smaller than the maximum download thread number MAXTHREADS specified by the multimode mobile terminal itself in the current single mode network;  When the determination is less than, the current download thread number I is incremented by 1, and then a socket connection is established according to the IP address; when the determination is greater than or equal, it is determined that the current download thread number I is the MAX.  The resource downloading method of the multi-mode mobile terminal according to claim 5, wherein the multi-mode mobile terminal requests the resource download server to download the undownloaded part of the resource, or requests to download the complete resource, specifically:  The multi-mode mobile terminal allocates the requested resource data segment for each download thread according to the requested resource size, the standard downlink data transmission rate under each single-mode network, and the maximum number of download threads MAX in each single-mode network;  The multi-mode mobile terminal sends a partial resource download request to the resource download server through each download line according to the resource data segment requested by each download thread;  Correspondingly, the resource downloading server returns a corresponding partial resource to the multi-mode mobile terminal through each downloading thread according to the partial resource download request. The method for downloading a multi-mode mobile terminal resource according to claim 4, wherein the method further comprises: determining, when the resource downloading of the single-mode network is completed, determining whether the download thread of the other un-downloaded single-mode network is Valid; release the uncompleted download when the judgment is invalid And a downloading thread of the modulo network, and requesting, by the single-mode network completed by the downloading, the undownloaded resource in the single-mode network in which the downloading thread is invalid.  A resource downloading system based on a multi-mode mobile terminal, the system comprising: an access module, configured to enable a multi-mode mobile terminal to access each single-mode network;  a connection module, configured to establish a physical connection with the data service of each single-mode network after the multi-mode mobile terminal accesses each single-mode network;  a judging module, configured to determine, after the multi-mode mobile terminal establishes a physical connection with the data service of each single-mode network, the resource download server supports a breakpoint transmission of the required resources;  The resource downloading module is configured to perform downloading of the required resources by using the single-mode network in a breakpoint retransmission manner when the resource downloading server supports the resuming of the required resources.  9. The resource downloading system based on a multimode mobile terminal according to claim 8, wherein:  The resource downloading module is further configured to perform downloading of the required resources in a multi-threaded manner when performing downloading of the required resources in a manner of resumed by a breakpoint;  The determining module is further configured to: determine that the resource download server does not support the resume transmission of the required resources;  Correspondingly, the resource downloading module is further configured to select a single mode network with the highest data transmission rate from the single mode networks, and perform downloading of the required resources through the selected single mode network.  10. The resource downloading system based on a multimode mobile terminal according to claim 9, wherein:  The determining module is further configured to: when a resource download of the single-mode network is completed, determine whether the download thread of the single-mode network that has not completed the download is valid;  Correspondingly, the resource downloading module is further configured to, according to the result of the determining module, release the downloading thread of the uncompleted downloading single-mode network when the determination is invalid, and request the single-mode network by using the downloading Download undownloaded resources in a single-mode network with invalid threads.