CN102368767A - Internet acceleration method and system based on HFC (hybrid fiber coaxial) network - Google Patents
Internet acceleration method and system based on HFC (hybrid fiber coaxial) network Download PDFInfo
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- CN102368767A CN102368767A CN2011102980852A CN201110298085A CN102368767A CN 102368767 A CN102368767 A CN 102368767A CN 2011102980852 A CN2011102980852 A CN 2011102980852A CN 201110298085 A CN201110298085 A CN 201110298085A CN 102368767 A CN102368767 A CN 102368767A
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Abstract
The invention provides an internet acceleration method and system based on an HFC (hybrid fiber coaxial) network. According to the method, downlink bandwidth resources of the HFC network can be still fully utilized when the uplink bandwidth of a telecommunication network is very low, and downlink data of internet can be received from the HFC network at high speed. The internet acceleration method comprise the steps of: 1, establishing a TCP (Transmission Control Protocol) connection between a user terminal and an internet business server; and 2, taking over the TCP connection by an acceleration server and an acceleration client side: specifically, 2-1, establishing a line between the internet business server and the acceleration server, when the internet business server pushes data to a user, caching the pushed data by the acceleration server, sending a first response message to the internet business server, meanwhile, pushing the data to the user by the acceleration server through the HFC network, and 2-2, after the user receives a data message pushed by the acceleration server, and sending N second response messages on receiving the data message to the acceleration server, wherein the second response messages are captured and optionally processed by an acceleration client side and then sent to the acceleration server.
Description
Technical field
The present invention relates to wired network and Internet communication technology field, be specifically related to a kind of acceleration the Internet internet access method and system based on hfc plant.
Background technology
The propelling of the integration of three networks is with the fusion development of realizing telecommunications network, the Internet, broadcasting and television network.And the fusion of the Internet and broadcasting and television network will be one of emphasis of integration of three networks research.
The radio and TV operator has the HFC platform of accomplishing digital improvement at present, has advantages such as covering is wide, bandwidth height.But because do not carry out bidirectional rebuilding, the user can only unidirectional reception message through the HFC platform, can't upload message, so also just can not use the standard internet service.So the Service Source and the ability major part of HFC platform are left unused at present.
And meanwhile, netizen's quantity increases day by day, but the bandwidth of telecommunications network is very limited, causes message transmission rate slow excessively, and user's online is experienced very undesirable.If therefore can utilize the idle bandwidth of hfc plant fully, can improve the bandwidth of registering one's residence to a great extent, improve the online experience that the user obtains Internet service.
Had at present and utilized the HFC net to do the method that online is quickened; Implementation method is that the user is connected to the acceleration server with quickening client through VPN; Through quickening the server agent online; Accelerating system is separated the up-downgoing flow of online, and uplink traffic is sent through the Internet (to call IP network in the following text), and downlink traffic pushes away through under the hfc plant.So just the bandwidth of hfc plant can have been utilized.But adopt this strategy that a restriction is arranged; Because the TCP session need be carried out two-way interactive; If upstream bandwidth is not enough, can cause up response message can not in time return transmitting terminal, even at this moment the bandwidth of the hfc plant that provides of this system descending is enough; Can finally cause the actual data transmission speed of system can't reach desired value because the delay of up response message causes downlink message in time to send equally.We obtain following empirical value through test in conjunction with prior art: the downstream rate higher limit can only reach 20 times of upstream rate.If therefore upstream bandwidth will cause making full use of the problem of the high-speed downstream bandwidth of hfc plant because up response message can not in time return less than 1/20 of downlink bandwidth.
Summary of the invention
The objective of the invention is to, for overcoming the problems referred to above, the present invention provides a kind of wired network that under low-bandwidth environment, utilizes to do the method that online is quickened, promptly a kind of acceleration the Internet internet access method and system based on hfc plant.
To achieve these goals; The present invention provides a kind of acceleration the Internet internet access method based on hfc plant; This method makes the upstream bandwidth at communication network still can make full use of the downlink bandwidth resource of hfc plant when very low; Receive the downlink data of the Internet at a high speed from hfc plant, comprise the steps:
Step 1, user terminal are set up TCP with the Internet service server and are connected.
Step 2, acceleration server are taken over said TCP with the acceleration client and are connected, and are specially:
Step 2-1; Said Internet service server is set up with the acceleration server and is linked; When Internet service server during to user's propelling data; Send first response message by the data of quickening its propelling movement of server buffer and to it, this acceleration server is pushed to the user through hfc plant with data simultaneously.
Step 2-2, user receive that said second response message is accelerated and sends to the acceleration server after client is caught and selected to handle again by second response message that sends N receiving data packets behind the data message that quickens server push to it.
Wherein, said acceleration client deployment is on user terminal, and said acceleration department server is deployed in radio and TV operator's the network.
Optional, said user terminal is set up with said Internet service server through application requests and is linked.
Optional, said selection is treated to: if when the user receives all messages that quicken server push, and second response message of last data message of only receiving to the transmission of acceleration service end of this accelerations client then; If when the user only received the some message that quickens server push, when promptly having data message to lose, this acceleration client all mail to said acceleration server with all of its intercepting and capturing by second response message that user terminal mails to the acceleration server.
Said acceleration server is by after quickening second response message that client sends, the message that judges has been received and from the paid-in data message of buffer unit deletion user terminal.
Based on said method; The present invention also provides a kind of acceleration the Internet connecting internet system based on hfc plant, and this system makes the upstream bandwidth at communication network still can make full use of the downlink bandwidth resource of hfc plant when very low, receives the downlink data of the Internet at a high speed from hfc plant; Comprise: hfc plant; Internet service server, user terminal is characterized in that, said system also comprises: one quickens server and quickens client.
Said acceleration server is set up with said Internet service server and is linked; Be used for when Internet service server during to user's propelling data; Send first response message by the data of quickening its propelling movement of server buffer and to it, this acceleration server is pushed to the user through hfc plant with data simultaneously.
Said acceleration client deployment is used for taking over user terminal with said acceleration server cooperation and is connected with the TCP that the Internet service server is set up on user terminal; Promptly; Said Internet service server is set up with the acceleration server and is linked; When Internet service server during to user's propelling data, send first response message by the data of quickening its propelling movement of server buffer and to it, this acceleration server is pushed to the user through hfc plant with data simultaneously; The user receives by sending N second response message that receives message to it after the data of quickening server push, and said second response message is accelerated client optionally sends some second messages in individual second response message of N to quickening server after catching and handling.
Optional, said user terminal sends link building messages through application program to said Internet service server, links with its foundation.
Optimize, said acceleration client further comprises: intercept and capture module, be used to intercept and capture user terminal to all second response messages that quicken the server terminal feedback; Whether judge module is received all by quickening the data message of client to its propelling movement according to all second response message judges terminals of intercepting and capturing; The module of selecting some second response messages to send is sent second response message of intercepting and capturing the module intercepting and capturing according to the decision-making as a result of judge module to quickening server.
Optional; When if said judge module judges that drawing all messages all arrives user terminal, second response message of last message of only receiving to the transmission of acceleration service end of this accelerations client then, promptly collect N message after; Only send last, preceding N-1 abandons; If when judging that obtaining user terminal only receives the plurality of data message that quickens server push, the acceleration client all mails to said acceleration server with all of its intercepting and capturing by second response message that user terminal mails to the acceleration server.
After said acceleration server was received second response message, the message that judges has been received was also deleted the paid-in message of said user from buffer unit.
Technical advantage compared with prior art of the present invention is:
The present invention has reduced the transmission of internet access upstream data (response message); Solved the response message that when upstream bandwidth is not enough, causes return data message source and can't make full use of the problem of the downlink bandwidth of hfc plant high speed in time; The restriction of having broken traditional up-downgoing speed ratio on the one hand; Can reach at the telecommunications network upstream bandwidth and have only under the situation of hfc plant bandwidth 1/1000; Still can make full use of the downlink bandwidth of hfc plant, on the other hand, make full use of a large amount of idle hfc plant resources of prior art.
Description of drawings
The composition sketch map of Fig. 1 acceleration the Internet connecting internet system based on hfc plant of the present invention;
Fig. 2 is the outline flowchart of the acceleration the Internet internet access method based on hfc plant of the present invention;
Fig. 3 utilizes hfc plant downlink bandwidth resource to do the particular flow sheet of the method for online acceleration under the low-bandwidth environment of the present invention.
Embodiment
Be described in detail to content of the present invention below in conjunction with accompanying drawing.
The present invention is in order to make full use of the idle bandwidth of hfc plant; Provide a kind of hfc plant of under low-bandwidth environment, utilizing to do the method that online is quickened; When making upstream bandwidth at communication network very low; Also can make full use of the downlink bandwidth resource of hfc plant, from hfc plant high speed downlink data receiving.
A kind of wired network that under low-bandwidth environment, utilizes provided by the invention is done the method that online is quickened, and comprises the steps:
(1) user uses and quickens client connection acceleration server, utilizes the accelerating system online based on VPN;
(2) user online is set up TCP with the Internet service server and is connected; The acceleration server receives TCP with the acceleration client and is connected all messages in the process of foundation; The clearance bi-directional that connects wherein; After TCP connects foundation, quicken server and quicken the TCP session that client is taken over the user;
(3) quicken server when receiving in the TCP session Internet service server data sent message, replace the user that the Internet service server is made and reply, data message is cached to pushes away data cached formation under it simultaneously;
(4) quicken the reception condition of server according to user terminal, the data message that will receive from the Internet service server is through shifting user terminal onto under the hfc plant downlink;
(5) quicken client and receive downlink data, give the system protocol stack from the hfc plant downlink;
(6) quicken client and hold back the system protocol stack to second response message that quickens the TCP session that server sends; If user terminal receives that all quicken servers when the data message of its transmission, this acceleration client only sends to the acceleration server with second response message by the last received data message of user terminal of its intercepting and capturing;
(7) quicken after server receives response message, delete it and push away in the data cached formation second of the data message feedback received by user terminal down and reply corresponding data message;
(8) further optimize; If when quickening server to data message generation packet loss that user terminal sends; The system protocol stack of user terminal can produce the duplicate answer message; The response message of these repetitions quickens client and directly lets pass to quickening server, quickens server and obtains the data of losing the data queue from pushing away down, retransmits these messages through the HFC road of working off the net.
Lost when all receiving at data message by the system protocol stack in above-mentioned steps (7) and the step (8), user terminal is a prior art to the detailed strategy of all second response messages that quicken server feedback, does not do at this and gives unnecessary details.
When (9) the Internet service server is ended the TCP connection in the TCP session; Quicken server and send response message according to the Transmission Control Protocol standard; The FIN message that while buffer memory Internet service server sends; When quicken server buffer following push away data message and all send to user terminal after, this acceleration server can be issued user terminal with this FIN message.
(10) the acceleration client of user terminal is issued the system protocol stack, end session after receiving the FIN message again.
(11) user terminal in the TCP session is initiatively during end session, quickens server and quickens client this FIN message of letting pass, and deletes session simultaneously.
Described step (2) is specially:
Acceleration server and the TCP session link setup process of quickening client identification user are treated to set up managing conversation for this TCP connects after the link setup success, and follow-up up-downgoing message is handled in this managing conversation, does not directly let pass.
Described step (3) is specially:
After the acceleration server is received the tcp data of Internet service server transmission; Carry out the managing conversation coupling according to the characteristic in the data; Can match the data of managing conversation, will proxy user send first response message to the Internet service server of TCP session.Push away the metadata cache formation down with what data message was put into managing conversation simultaneously.
Described step (4) is specially:
Quickening server is to push away the metadata cache formation under session is set up; The data message that receives from the Internet service server is buffered under this and pushes away the data queue; Instantly (so-called maximized window is the term of ICP/IP protocol stack to push away the maximized window that data reach receiving terminal; Finger debit's reception buffer size) finishes this secondary data the time and push processing procedure, otherwise will directly be pushed to user terminal from the data message that the Internet service server receives.
Described step (6) is specially:
Quicken client identification TCP link setup process; Set up managing conversation; After receiving the response message that sends at TCP session subscriber terminal, in managing conversation, count, and hold back all second response messages that user terminal feeds back to the acceleration server;, response message quantity sends the second corresponding response message of last data message after surpassing its preset buffer memory value N, to reach the purpose of saving upstream bandwidth to quickening server.
Up data message is carried the situation of ACK (replying), quicken client and quicken server this message of letting pass, guarantee that utility cession normally carries out.
Described step (7) (8) is specially:
Repetition second response message during to generation data message packet loss, the acceleration client directly sends to the acceleration server with all second response messages of its intercepting and capturing.
After the acceleration server is received second response message; Further identification is that second response message that normally quickens the client transmission (is to feed back second response message after user terminal has been received all data messages; This second response message is accelerated after the client process and only sends second response message of last data message feedback that is received by user terminal to quickening server) second response message that still quickens client feedback during packet loss; If packet loss second response message, this acceleration server sends the data message of losing to user terminal again.If normal second response message (packet loss does not promptly take place) then quickens server and pushes away the data message that deletion has been received by user terminal the metadata cache formation according to the sequence number in second response message down from it.
Fig. 1 provides the system block diagram of method for the present invention, and system mainly consists of the following components:
Quicken client: be operated in user's the PC environment, be responsible for handling the upstream request data and second response message that wired network adapter receives and leading subscriber sends.
Quicken server: be responsible for receiving and quicken the client connection, proxy user and Internet service server interaction push away its data in buffer message through hfc plant under the user.
Load-balanced server: acceleration server in the management system and IPQAM node provide acceleration server and HFC frequency resource information for quickening client, for quickening the information that server provides IPQAM.
The IPQAM:IP signal modulator is responsible for will speed up the data message form that IP datagram literary composition that server sends is packaged into hfc plant, sends to hfc plant.
Fig. 2 is the flow chart of technical scheme of the present invention, and the enforcement of technical scheme of the present invention is to quicken server end and the realization of quickening the accelerating system that client forms comprising, concrete steps are following:
Step 201 is quickened server end VPN is provided access function, quicken server and connect IPQAM equipment, can through push away under wired hfc plant resource its buffer memory from the data on the Internet service server.
Step 202 is quickened client and is obtained quickening server and wired network adapter relevant parameter through load-balanced server.
Step 203 is quickened client and is connected the online of acceleration server.
Step 204 is quickened server to user's TCP session and is used method provided by the invention to quicken with the acceleration client.
As shown in Figure 3, the process step of the detailed concrete technical scheme of the step 104 of this figure technique scheme is:
In sum; A kind of hfc plant of under low-bandwidth environment, utilizing provided by the invention is done the method that online is quickened; Under low upstream bandwidth environment; Take over user's TCP session, reduce and reply quantity forwarded, thus can when upstream bandwidth less than downlink bandwidth 1/20 the time downlink bandwidth with still making full use of hfc plant.
Need to prove, embodiment of the present invention of more than introducing and and unrestricted.It will be understood by those of skill in the art that any modification to technical scheme of the present invention perhaps is equal to alternative spirit and the scope that does not break away from technical scheme of the present invention, it all should be encompassed in the claim scope of the present invention.
Claims (9)
1. acceleration the Internet internet access method based on hfc plant, this method make the upstream bandwidth at communication network still can make full use of the downlink bandwidth resource of hfc plant when very low, receive the downlink data of the Internet at a high speed from hfc plant, comprise the steps:
Step 1, user terminal are set up TCP with the Internet service server and are connected;
Step 2, acceleration server are taken over said TCP with the acceleration client and are connected, and are specially:
Step 2-1; Said Internet service server is set up with the acceleration server and is linked; When Internet service server during to user's propelling data; Send first response message by the data of quickening its propelling movement of server buffer and to it, this acceleration server is pushed to the user through hfc plant with data simultaneously;
Step 2-2, user receive that said second response message is accelerated and sends to the acceleration server after client is caught and selected to handle again by second response message that sends N receiving data packets behind the data message that quickens server push to it;
Wherein, said acceleration client deployment is on user terminal, and said acceleration department server is deployed in radio and TV operator's the network.
2. the acceleration the Internet internet access method based on hfc plant according to claim 1 is characterized in that, said user terminal is set up with said Internet service server through application requests and linked.
3. the acceleration the Internet internet access method based on hfc plant according to claim 1 is characterized in that said selection is treated to:
When if the user receives all messages that quicken server push, then this acceleration client is only sent second response message of last data message of receiving to quickening service end;
If when the user only received the some message that quickens server push, when promptly having data message to lose, this acceleration client all mail to said acceleration server with all of its intercepting and capturing by second response message that user terminal mails to the acceleration server.
4. the acceleration the Internet internet access method based on hfc plant according to claim 3 is characterized in that, after said acceleration server was received second response message, the message that judges has been received was also deleted the paid-in message of said user from buffer unit.
5. acceleration the Internet connecting internet system based on hfc plant; This system makes the upstream bandwidth at communication network still can make full use of the downlink bandwidth resource of hfc plant when very low; Receive the downlink data of the Internet at a high speed from hfc plant, comprise: hfc plant, Internet service server, user terminal, load-balanced server and IPQAM equipment; It is characterized in that said system also comprises: one quickens server and quickens client;
Said acceleration server is set up with said Internet service server and is linked; Be used for when Internet service server during to user's propelling data; Send first response message by the data of quickening its propelling movement of server buffer and to it, this acceleration server is pushed to the user through hfc plant with data simultaneously;
Said acceleration client deployment is used for taking over user terminal with said acceleration server cooperation and is connected with the TCP that the Internet service server is set up on user terminal; Promptly; Said Internet service server is set up with the acceleration server and is linked; When Internet service server during to user's propelling data; Send first response message by the data message that quickens its propelling movement of server buffer and to it, this acceleration server is pushed to the user through hfc plant with data message simultaneously; The user receives by second response message that sends N receiving data packets behind the data message that quickens server push to it, and said second response message is accelerated client and catches and handle the back and send second response message to the acceleration server.
6. the acceleration the Internet connecting internet system based on hfc plant according to claim 5 is characterized in that, said user terminal sends link building messages through application program to said Internet service server, links with its foundation.
7. the acceleration the Internet internet access method based on hfc plant according to claim 5 is characterized in that said acceleration client further comprises:
Intercept and capture module, be used to intercept and capture user terminal to all second response messages that quicken the server terminal feedback;
Whether judge module is received all by quickening the data message of client to its propelling movement according to all second response message judges terminals of intercepting and capturing;
The module of selecting some second messages to send is selectively sent second response message of intercepting and capturing the module intercepting and capturing to quickening server according to the decision-making as a result of judge module.
8. the acceleration the Internet internet access method based on hfc plant according to claim 7; It is characterized in that; When if said judge module judges that drawing all data messages all arrives user terminal, then this acceleration client is only sent second response message of last data message of receiving to quickening service end; If when judging that obtaining user terminal only receives the plurality of data message that quickens server push, the acceleration client all mails to said acceleration server with all of its intercepting and capturing by second response message that user terminal mails to the acceleration server.
9. according to claim 7 or 8 described acceleration the Internet internet access methods based on hfc plant; It is characterized in that; After said acceleration server was received second response message, the message that judges has been received was also deleted the paid-in message of said user from buffer unit.
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Denomination of invention: Internet acceleration method and system based on HFC (hybrid fiber coaxial) network Effective date of registration: 20161111 Granted publication date: 20140226 Pledgee: China Merchants Bank Beijing branch of the Universiade village Limited by Share Ltd Pledgor: Beijing NetEast Technologies Co., Ltd. Registration number: 2016990000971 |
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