CN103067516B - A kind of data download method for mobile network - Google Patents
A kind of data download method for mobile network Download PDFInfo
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- CN103067516B CN103067516B CN201210591621.2A CN201210591621A CN103067516B CN 103067516 B CN103067516 B CN 103067516B CN 201210591621 A CN201210591621 A CN 201210591621A CN 103067516 B CN103067516 B CN 103067516B
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Abstract
The invention provides a kind of data download method for mobile network, the present invention adds intermediate node between core net and Access Network in a mobile network, user is made to access the speed of internet web page also very fast, improve Consumer's Experience, mobile operator also can support that more user accesses the Internet.And this programme works completely on the tcp layer, be indifferent to tcp data specifically what, do not need to resolve the data of TCP inside, such as, the IP address of content server can be read on the tcp layer, and the latter part of data of initial tcp data also can directly read on the tcp layer.Here it is decreases the design difficulty of intermediate node, also mitigates intermediate node work load, thus improves the disposal ability of intermediate node, makes Consumer's Experience better.<!-- 2 --><!-- 3 -->
Description
Technical field:
The present invention relates to communication technical field, is specifically a kind of data download method for mobile network.
Background technology:
Along with the continuous growth of wireless data service, and mobile TV, video request program, music download rise, the requirement of people to mobile data transfer is also more and more higher, particularly requires more and more higher for the data speed of download, transmission delay etc. on mobile network.Mobile network system generally comprises core net and Access Network.3G technology regulatory agencies 3GPP defines 3G and LTE network framework specification.
In 3G network, Access Network mainly contains node (NodeB) and radio network controller (RNC) composition.In 3G network, core host will comprise GPRS serving GPRS support node (SGSN) and GPRS Support Node (GGSN).In 3G network, the data of mobile terminal (UE) are through node (NodeB), and radio network controller (RNC), GPRS serving GPRS support node (SGSN) and GPRS Support Node (GGSN) arrive content server afterwards.The Access Network of LTE network forms primarily of evolved node (eNodeB).The core net of LTE network forms primarily of mobile management entity (MME), gateway (SGW) and packet data network gateway (PGW).In LTE environment, the data of mobile terminal (UE) are through evolved node (eNodeB), and gateway (SGW) and packet data network gateway (PGW) arrive content server.Content server is general on the internet.
Data download method in current LTE network, such as: if certain mobile terminal needs to access certain webpage, this webpage is present in content server, namely mobile terminal needs downloading data from this content server, when under user is by mobile terminal point during webpage, mobile terminal and content server carry out TCP three-way handshake.Then, content server sends data to mobile terminal, and mobile terminal returns acknowledgement indicator (ack).The data flow of this webpage through Access Network and core net, therefore occupy through Access Network and the node bandwidth of core net, then content server carries out TCP and waves for tetra-times to close and connect, and completes the process of downloading web pages data.
This data download method or traditional client server mode, when mobile terminal wants downloading data each time, the data flow of this exchanges data all will through a string server of long length, that is, each data are downloaded, all need the bandwidth taking a core net, every many users access the Internet, all can increase the burden of the Servers-all that this catena connects, if too much user accesses the Internet, network just may block, and cause access speed to decline, Consumer's Experience is poor.
Summary of the invention:
The object of the invention is, overcome the defect of prior art, provide a kind of speed of download very fast, therefore accesses network speed, the data download method for mobile network of better user experience.
Technical scheme provided by the invention is: the invention provides a kind of data download method for mobile network, it comprises the following steps:
(1) mobile terminal carries out TCP three-way handshake to content server, TCP connect from mobile terminal through Access Network, intermediate node, core net to content server;
(2) content server sends initial tcp data to intermediate node, and intermediate node forwards initial tcp data to mobile terminal, and meanwhile, the latter part of data of IP address and initial tcp data that intermediate node takes out content server are as index value;
(3) intermediate node is according to the IP address of content server and index value consults memory, and described memory is located in intermediate node;
(4) if inquiry less than, then intermediate node downloads the data of whole resource from content server, then by behind the IP address of content server and the data correlation of index value and this whole resource stored in memory, and then to inquire about;
(5) if inquire, then intermediate node and content server terminate TCP and are connected;
(6), after mobile terminal receives initial tcp data, send acknowledgement indicator to intermediate node, intermediate node abandons this acknowledgement indicator signal;
(7) intermediate node reads the data of whole resource from memory, sends to mobile terminal;
(8) mobile terminal closes TCP connection after receiving data;
Described intermediate node comprises TCP agent server and memory.
Described initial tcp data refers to the data of TCP initial sliding window size.
As preferably, the latter part of data of described initial tcp data, refer to the rear 4K data in the data of TCP initial sliding window size.Such as: if TCP initial sliding window is 8K, so selected data is the data of the 4K size of 4K to 8K.
Have the following advantages after adopting the present invention:
The present invention adds intermediate node between core net and Access Network in a mobile network, by fewer investment, although do not reduce the data traffic of Access Network, significantly can reduce the data traffic of core net, reduces the burden of core network server.Make every many users, the burden of the server in core net can't be participated in, thus data speed of download is very fast, the speed that user accesses internet web page is also very fast, improve Consumer's Experience, mobile operator also can support that more user accesses the Internet, and this programme works completely on the tcp layer, be indifferent to tcp data specifically what, do not need to resolve the data of TCP inside, such as, the IP address of content server can be read on the tcp layer, and the latter part of data of initial tcp data also can directly read on the tcp layer.Here it is decreases the design difficulty of intermediate node, also mitigates intermediate node work load, thus improves the disposal ability of intermediate node, makes Consumer's Experience better.
Embodiment:
Below in conjunction with specific embodiment, the present invention is elaborated:
The invention provides a kind of data download method for mobile network, be that embodiment makes an explanation below with LTE network, suppose that user visits the webpage in the Internet in use mobile terminal (as smart mobile phone), this web data is stored in Internet content server, mobile terminal needs to download this web data, then step is as follows:
(1) mobile terminal carries out TCP three-way handshake to content server, and TCP is connected through evolved node, intermediate node, gateway to packet data network gateway, then links content server;
(2) content server sends initial tcp data to intermediate node, intermediate node forwards initial tcp data to mobile terminal, meanwhile, the intermediate node taking-up IP address of content server and the latter part of data of initial tcp data are as the index value carrying out searching in lower continuous step; Because the data on webpage are generally tcp data, probably only TCP head is different and follow-up data is identical for the data flow of identical content.Therefore can by the latter part of data of inquiry, inquire about the data flow of identical content, described intermediate node is formed primarily of TCP agent server and memory, its hardware implementing can be added a memory by a general single chip and be realized, memory can adopt database or buffer memory, adopts free database mysql to realize in the present embodiment.Described initial tcp data, the data of the present embodiment middle finger TCP initial sliding window size.The size of TCP initial sliding window is 8K in the present embodiment, and so selected data is the data of 4K to the 4K of 8K.
3) intermediate node is according to the IP address of content server and index value consults memory, and no in consults memory have the resource data needing to download, i.e. the data of this webpage, and described memory is located in intermediate node; Described memory is located in intermediate node.
(4) if inquiry less than, then intermediate node downloads the data of whole resource from content server, the i.e. data of this webpage, then using the IP address of this content server and the latter part of data of initial tcp data after index value and this data correlation stored in memory, and then to inquire about;
(5) if inquire, then intermediate node and content server terminate TCP and are connected; This webpage will accessed with regard to explanation mobile terminal is present in intermediate node.
(6), after mobile terminal receives the data of TCP initial sliding window size, send acknowledgement indicator to intermediate node, intermediate node abandons this acknowledgement indicator signal;
(7) intermediate node is from memory read data, sends to mobile terminal; Until web data is all sent to mobile terminal.
(8) mobile terminal closes TCP connection after receiving data; Mobile terminal receives data, has namely downloaded web data, and mobile terminal completes the access to webpage.
Claims (3)
1. for a mobile network's data download method, it is characterized in that: it comprises the following steps:
(1) mobile terminal carries out TCP three-way handshake to content server, TCP connect from mobile terminal through Access Network, intermediate node, core net to content server;
(2) content server sends initial tcp data to intermediate node, and intermediate node forwards initial tcp data to mobile terminal, and meanwhile, the latter part of data of IP address and initial tcp data that intermediate node takes out content server are as index value;
(3) intermediate node is according to the IP address of content server and index value consults memory, and described memory is located in intermediate node;
(4) if inquiry less than, then intermediate node downloads the data of whole resource from content server, then by behind the IP address of content server and the data correlation of index value and this whole resource stored in memory, and then to inquire about;
(5) if inquire, then intermediate node and content server terminate TCP and are connected;
(6), after mobile terminal receives initial tcp data, send acknowledgement indicator to intermediate node, intermediate node abandons this acknowledgement indicator signal;
(7) intermediate node reads the data of whole resource from memory, sends to mobile terminal;
(8) mobile terminal closes TCP connection after receiving data;
Described intermediate node comprises TCP agent server and memory.
2. a kind of data download method for mobile network according to claim 1, is characterized in that: described initial tcp data refers to the data of TCP initial sliding window size.
3. a kind of data download method for mobile network according to claim 2, is characterized in that: the latter part of data of described initial tcp data, refers to the rear 4K data in the data of TCP initial sliding window size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210591621.2A CN103067516B (en) | 2012-12-29 | 2012-12-29 | A kind of data download method for mobile network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210591621.2A CN103067516B (en) | 2012-12-29 | 2012-12-29 | A kind of data download method for mobile network |
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| CN103067516A CN103067516A (en) | 2013-04-24 |
| CN103067516B true CN103067516B (en) | 2015-12-02 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011139305A1 (en) * | 2010-05-04 | 2011-11-10 | Azuki Systems, Inc. | Method and apparatus for carrier controlled dynamic rate adaptation and client playout rate reduction |
| CN102833791A (en) * | 2011-06-16 | 2012-12-19 | 中兴通讯股份有限公司 | Packet domain content caching system for radio network controller (RNC) and implementing method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011139305A1 (en) * | 2010-05-04 | 2011-11-10 | Azuki Systems, Inc. | Method and apparatus for carrier controlled dynamic rate adaptation and client playout rate reduction |
| CN102833791A (en) * | 2011-06-16 | 2012-12-19 | 中兴通讯股份有限公司 | Packet domain content caching system for radio network controller (RNC) and implementing method thereof |
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| CN103067516A (en) | 2013-04-24 |
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Granted publication date: 20151202 Termination date: 20171229 |