CN104320405B - A kind of upper optimization method suitable for star-like satellite network - Google Patents
A kind of upper optimization method suitable for star-like satellite network Download PDFInfo
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- CN104320405B CN104320405B CN201410620556.0A CN201410620556A CN104320405B CN 104320405 B CN104320405 B CN 104320405B CN 201410620556 A CN201410620556 A CN 201410620556A CN 104320405 B CN104320405 B CN 104320405B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
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- Computer Networks & Wireless Communication (AREA)
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- Aviation & Aerospace Engineering (AREA)
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- Data Exchanges In Wide-Area Networks (AREA)
- Radio Relay Systems (AREA)
Abstract
The present invention discloses a kind of upper optimization method suitable for star-like satellite network, is related to application layer in satellite communication field and accelerates field.Efficiently upper optimization method of the design of the characteristics of mainly for star-like satellite network suitable for the scene.Present invention can apply to the scene of star-like satellite network user online, it can effectively save satellite link bandwidth, be obviously improved the networking speed of star-like satellite network user, be finally reached good Consumer's Experience.The present invention need not change existing network infrastructure, without changing client, you can realize online optimization.
Description
Technical field
The present invention discloses a kind of upper optimization method suitable for star-like satellite network, is related in satellite communication field and applies
Layer accelerates field, can be effective by the invention particularly for solving the problem of web applies extremely inefficient in star-like satellite network
Shorten the web access delays in star-like satellite network, greatly save satellite link bandwidth resource, strengthen the experience of user.
Background technology
In recent years, with the innovation and the breakthrough of network optimization key technology of hardware technology, Internet transmission in ground is visited
Ask that speed has been lifted, but still it is undesirable.The research in 2012 of SmartBear companies shows, for Web applications, 57%
User in 3 seconds also no loading complete will abandon browsing the webpage.At the same time, with the hair at full speed of satellite network
The popularization and application with information technology is opened up, therefore how research speeds up Web searches with highly important in satellite network environment
Research Significance and market value.
Because satellite network has the characteristics such as long delay, high bit error and Bandwidth-Constrained so that with serialization, interactive mode etc.
The application layer protocol of feature in satellite network using when face than the more stern challenge in terrestrial wide area networks, such as：It is longer
Access time delay, more limited link bandwidth etc..In addition, there are star-like satellite network all small station online to be required in
The features such as center station, the backward channel in all small stations are broadcast.Therefore in the upper optimization method design of star-like satellite network
Current terrestrial wide area networks acceleration technique can not blindly be indiscriminately imitated, but need on the one hand to evade and tackle in satellite network it is many not
The factor effectively run beneficial to agreement, has on the other hand made full use of the exclusive network topology of star-like satellite network and application special
Point, targetedly design is specific to the efficiently upper optimization method of star-like satellite network.
This patent integrates the inherent characteristic and network topology feature of star-like satellite network, it is proposed that one kind is adapted to star-like satellite
The upper optimization method of network.This method is mainly used using all small stations in the broadcast characteristic and star-like satellite network of satellite network
Family online is the characteristics of need by central station, and central station accelerates gateway using broadcasting-satellite channel to being set in same multicast group
Each small station accelerate gateway to send multicast subject's response message so that the object that need to store of respectively standing is by long delay, a height
The satellite channel of error code just can accelerate gateway to store by the small station in same multicast group, and each user can just use the speed of LAN
It is conducted interviews, application layer protocol operational efficiency so can be significantly improved, while can also save substantial amounts of satellite chain
Road bandwidth resources.
The content of the invention
The problems such as it is an object of the invention to solve slow Star Network user networking speed, inefficiency, defended with reference to star-like
Star network characteristicses, user behavior custom, it is proposed that a kind of upper optimization method suitable for star-like satellite network.
The object of the present invention is achieved like this：
A kind of upper optimization method suitable for star-like satellite network, is to accelerate gateway and central station to accelerate based on each small station
Gateway is realized, it is characterised in that comprised the following steps：
A, when certain user browses webpage in same multicast group, the user accelerates gateway with unicast to corresponding small station
Form sends online request message；
B, small station accelerate gateway to receive after online request message, and it is parsed, and accelerate the object of gateway in small station
The user included in the request message is searched in information table needs whether the object accessed has cached；If existing, from
Small station accelerates to take out the object response message in the object information table of gateway in the way of unicast to user's reply response message；Such as
Fruit is not present, then sends the online request message by way of satellite network accelerates gateway to central station with unicast, while
Small station accelerates to record this time online request link information in the online session connection table of gateway, and accelerates the object of gateway in small station
The information of the object is recorded in information table；
C, central station accelerate gateway to receive after online request message, and central station accelerates web clothes of the gateway into Internet
Business device sends online request message, while this request link information of surfing the Net of record in the online session connection table of central station；
D, central station accelerate gateway to receive after the unicast response message that web server in Internet is beamed back, and first look at
Online request link information in the online session connection table of central station corresponding to the response, link information is asked according to the online
The address that the source address of request accelerates gateway for certain small station is inquired, then checks which small station accelerates gateway to accelerate with the small station
Unicast response bag is converted into multicast response bag by gateway in same multicast group, using satellite broadcasting characteristic into the multicast group
Each small station accelerate gateway send multicast response message；
E, small station accelerate gateway to receive after the multicast response message that central station accelerates gateway transmission, by the multicast response message
Unicast response message is converted into, final request is sent to and browses the user of the webpage, and update the object information table of the object；With
Small station accelerates other small stations of gateway in same multicast group to accelerate gateway to receive the multicast response that central station accelerates gateway to send
After message, the object information table of the object is being locally created.
Wherein, this online request link information of record is asked including online in session connection table of surfing the Net in the step B
Source address, destination address, source port, destination interface and the uniform resource position mark URL asked；Wherein source address and source port are upper
The address and port of net request user, destination address and address and port that destination interface is Web server, URL are request net
The URL of page.
Wherein, recording the object current information in the step B in object information table includes URL
URL, Obj State and object response message.
Wherein, the step B records send the online by way of satellite network accelerates gateway to central station with unicast
Request message, the source address of unicast online request bag accelerates the address of gateway for small station.
Wherein, the step C this online request link information of record in online session connection table includes online request
Source address, destination address, source port, destination interface and uniform resource position mark URL；Wherein source address and source port are small station
Accelerate WAN port address and the port of gateway, destination address and address and port that destination interface is Web server, URL is request
The URL of webpage.
Wherein, unicast response bag is converted into multicast response bag by the step D, using satellite broadcasting characteristic to the multicast group
Interior each small station accelerates gateway to send multicast response message, and central station accelerates the address of gateway encapsulation and the multicast response bag sent
The address of multicast group as where small station acceleration gateway.
Wherein, the step E includes uniform resource position mark URL, object in the object information table that the object is locally created
State and object response message.
The present invention has advantages below：A kind of upper optimization method suitable for star-like satellite network, can be largely
The upper response time for shortening star-like satellite network user online, minimized the transmission load of redundant data on satellite link, improve
The utilization rate of spatial cache, preferably realizes that the whole network caching is rationally shared, is finally reached good user's online experience.
Brief description of the drawings
Fig. 1 is the application scenarios schematic diagram of the present invention
Fig. 2 is the workflow diagram of the present invention.
Embodiment
The present invention is applied to star-like satellite network scene, and online optimization function mainly accelerates gateway and center by each small station
Acceleration gateway of standing, which coordinates, to be realized.Below in conjunction with accompanying drawing 1,2, the present invention will be further described.Wherein, Fig. 1 is the application of the present invention
Schematic diagram of a scenario, Fig. 2 is the workflow diagram of the present invention.
Reference picture 1, mainly illustrates the applicable scene of optimization method on this patent.Each small station customer group passes through respective
Small station accelerates gateway and central station to accelerate gateway to realize the access to Web page.Wherein, small station accelerates gateway is settable to add not
Same multicast group, or it is added without any multicast group (non-push mode).The small station being set in same multicast group accelerates gateway,
Such as figure small station accelerates gateway A and B to be set to multicast group 1, can receive central station and accelerate the multicast address that gateway is sent to be multicast 1
Response message；Small station accelerates gateway C and D to be set to multicast group 2, can receive central station and accelerate the multicast address that gateway is sent to be group
Broadcast 2 response message；Because small station accelerates gateway E to be set to " non-push mode ", then it can not receive that to be sent to other any
Small station accelerates the response message of gateway, equally, and other small stations, which can not be received, to be sent to small station and accelerate gateway E response to disappear
Breath.
Reference picture 2, a kind of upper optimization method suitable for star-like satellite network is to accelerate gateway with based on each small station
Center station accelerates gateway come what is realized, comprises the following steps：
A, when certain user browses webpage in same multicast group, the user accelerates gateway with unicast to corresponding small station
Form sends online request message；
B, small station accelerate gateway to receive after online request message, and it is parsed, and accelerate the object of gateway in small station
The user included in the request message is searched in information table needs whether the object accessed has cached；If existing, from
Small station accelerates to take out the object response message in the object information table of gateway in the way of unicast to user's reply response message；Such as
Fruit is not present, then sends the online request message by way of satellite network accelerates gateway to central station with unicast, while
Small station accelerates to record this time online request link information in the online session connection table of gateway, and accelerates the object of gateway in small station
The information of the object is recorded in information table；
Wherein, this online request link information of record is asked including online in session connection table of surfing the Net in the step B
Source address, destination address, source port, destination interface and the uniform resource position mark URL asked；Wherein source address and source port are upper
The address and port of net request user, destination address and address and port that destination interface is Web server, URL are request net
The URL of page.
Wherein, recording the object current information in the step B in object information table includes URL
URL, Obj State and object response message；Wherein Obj State is set to " request is waited " state.
Wherein, the step B records send the online by way of satellite network accelerates gateway to central station with unicast
Request message, the source address of unicast online request bag accelerates the address of gateway for small station.
C, central station accelerate gateway to receive after online request message, and central station accelerates web clothes of the gateway into Internet
Business device sends online request message, while this request link information of surfing the Net of record in the online session connection table of central station；
Wherein, the step C this online request link information of record in online session connection table includes online request
Source address, destination address, source port, destination interface and uniform resource position mark URL；Wherein source address and source port are small station
Accelerate WAN port address and the port of gateway, destination address and address and port that destination interface is Web server, URL is request
The URL of webpage.
D, central station accelerate gateway to receive after the unicast response message that web server in Internet is beamed back, and first look at
Online request link information in the online session connection table of central station corresponding to the response, link information is asked according to the online
The address that the source address of request accelerates gateway for small station is inquired, then checks which small station accelerates gateway to accelerate net with the small station
Close in same multicast group, unicast response bag is converted into multicast response bag, using satellite broadcasting characteristic into the multicast group
Each small station accelerates gateway to send multicast response message；
Wherein, the step D checks which small station accelerates gateway to accelerate gateway in same multicast group with the small station, each small
Acceleration gateway of standing can set which multicast group added according to the application demand of user, or be added without any multicast group.Wherein not
The small station for adding any multicast group accelerates gateway to be arranged to " non-push mode ".
Wherein, unicast response bag is converted into multicast response bag by the step D, using satellite broadcasting characteristic to the multicast group
Interior each small station accelerates gateway to send multicast response message, and central station accelerates the address of gateway encapsulation and the multicast response bag sent
The address of multicast group as where small station acceleration gateway.
E, small station accelerate gateway to receive after the multicast response message that central station accelerates gateway transmission, by the multicast response message
Unicast response message is converted into, final request is sent to and browses the user of the webpage, and update the object information table of the object；With
Small station accelerates other small stations of gateway in same multicast group to accelerate gateway to receive the multicast response that central station accelerates gateway to send
After message, the object information table of the object is being locally created.
Wherein, the step E updates the object information table of the object, and the object is upper netted in gateway is locally accelerated
State is updated to " caching " state, and object response message is cached in object information table.
Wherein, the step E other acceleration gateways in set up the object object information table include unified resource positioning
Accord with URL, Obj State and object response message.
The various embodiments described above of the present invention, have created the upper optimization method suitable for star-like satellite network, the especially reality
The scene that example all small stations suitable for star-like satellite network access Internet by central station is applied, using this patent achievement,
Subject's response message only need to be by the transmission of a satellite link, you can realize height of the online object in star-like satellite network
Effect, rational distributed storage.The achievement in research, can be greatly on the premise of star-like satellite network networking speed is effectively lifted
Save satellite link bandwidth resource.
It will be understood by those skilled in the art that：Realize a kind of upper optimization method suitable for star-like satellite network
It can be completed by the related hardware of programmed instruction or software, upon execution, execution includes above method embodiment to the program
The step of.
Claims (7)
1. a kind of upper optimization method suitable for star-like satellite network, is to accelerate gateway and central station to accelerate net based on each small station
Close to realize, it is characterised in that comprise the following steps：
A, when certain user browses webpage in same multicast group, the user accelerates gateway in the form of unicast to corresponding small station
Send online request message；
B, small station accelerate gateway to receive after online request message, and it is parsed, and accelerate the object information of gateway in small station
The user included in the request message is searched in table needs whether the object accessed has cached；If existing, from small station
The object response message is taken out in the object information table for accelerating gateway and replys response message to user in the way of unicast；If no
In the presence of, then satellite network to central station accelerate gateway with unicast by way of send the online request message, while in small station
Accelerate record this time online request link information in the online session connection table of gateway, and accelerate the object information of gateway in small station
The information of the object is recorded in table；
C, central station accelerate gateway to receive after online request message, and central station accelerates web server of the gateway into Internet
Online request message is sent, while the record this time online request link information in the online session connection table of central station；
D, central station accelerate gateway to receive after the unicast response message that web server in Internet is beamed back, and first look at center
Online request link information in the online session connection table stood corresponding to the response, link information inquiry is asked according to the online
Source address to request accelerates the address of gateway for certain small station, then checks which small station accelerates gateway to accelerate gateway with the small station
In same multicast group, unicast response bag is converted into multicast response bag, it is each into the multicast group using satellite broadcasting characteristic
Small station accelerates gateway to send multicast response message；
E, small station accelerate gateway to receive after the multicast response message that central station accelerates gateway transmission, and the multicast response message is changed
Into unicast response message, it is sent to final request and browses the user of the webpage, and update the object information table of the object；With small station
Other small stations of gateway in same multicast group are accelerated to accelerate gateway to receive the multicast response message that central station accelerates gateway to send
Afterwards, the object information table of the object is being locally created.
2. a kind of upper optimization method suitable for star-like satellite network according to claim 1, it is characterised in that：It is described
Record this time online request link information includes the source address of online request, destination in online session connection table in step B
Location, source port, destination interface and uniform resource position mark URL；Wherein source address and source port ask the address of user for online
And port, destination address and address and port that destination interface is Web server, URL is the URL of requested webpage.
3. a kind of upper optimization method suitable for star-like satellite network according to claim 1, it is characterised in that：It is described
The object current information is recorded in step B in object information table to ring including uniform resource position mark URL, Obj State and object
Answer message.
4. a kind of upper optimization method suitable for star-like satellite network according to claim 1, it is characterised in that：It is described
Step B records are sent in the online request message, the unicast by way of satellite network accelerates gateway to central station with unicast
The source address of net request bag is the address that small station accelerates gateway.
5. a kind of upper optimization method suitable for star-like satellite network according to claim 1, it is characterised in that：It is described
Step C online session connection table in record this time online request link information include online request source address, destination address,
Source port, destination interface and uniform resource position mark URL；Wherein source address and source port are the WAN mouths ground that small station accelerates gateway
Location and port, destination address and destination interface are the address and port of Web server, and URL is the URL of requested webpage.
6. a kind of upper optimization method suitable for star-like satellite network according to claim 1, it is characterised in that：It is described
Unicast response bag is converted into multicast response bag by step D, and net is accelerated using each small station of the satellite broadcasting characteristic into the multicast group
Close and send multicast response message, central station accelerates the address of gateway encapsulation and the multicast response bag sent to be that small station accelerates gateway
The address of the multicast group at place.
7. a kind of upper optimization method suitable for star-like satellite network according to claim 1, it is characterised in that：It is described
Step E includes uniform resource position mark URL, Obj State and object response report in the object information table that the object is locally created
Text.
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| CN105577557B (en) * | 2015-12-18 | 2018-10-09 | 中南大学 | Concurrent TCP connection multiplexing method in a kind of satellite network |
| CN107800666B (en) * | 2016-09-02 | 2022-11-22 | 中兴通讯股份有限公司 | Page content processing method and device, master node and slave node |
| CN107453802B (en) * | 2017-09-15 | 2019-09-17 | 中国地质大学（武汉） | A kind of maximum time satellite communication link method, equipment and its storage equipment |
| CN108111338B (en) * | 2017-12-05 | 2019-06-11 | 华中科技大学 | A kind of data consistency system under the environment based on satellite network |
| CN108111424B (en) * | 2017-12-25 | 2020-08-21 | 航天恒星科技有限公司 | Multicast rapid establishing method and system based on satellite communication system |
| CN110190893A (en) * | 2019-06-18 | 2019-08-30 | 中国电子科技集团公司第五十四研究所 | A kind of satellite channel high speed reliable data transmission method based on DPDK |
| CN112803982A (en) * | 2021-02-03 | 2021-05-14 | 南通先进通信技术研究院有限公司 | Satellite multicast distribution system based on CDN cache technology and working method thereof |
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