CN101001195A - Data transmission system and method - Google Patents
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- CN101001195A CN101001195A CNA2006101675616A CN200610167561A CN101001195A CN 101001195 A CN101001195 A CN 101001195A CN A2006101675616 A CNA2006101675616 A CN A2006101675616A CN 200610167561 A CN200610167561 A CN 200610167561A CN 101001195 A CN101001195 A CN 101001195A
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Abstract
This invention relates to a data transmission system used in transmitting being transmitted data to a second node in the second domain from a first node in the first domain, in which, the first node includes a first data list, the second node includes a second data list, and the first node also includes a data list obtaining unit for getting the second data list, a selection unit for selecting a third management domain from multiple domains according to the first and the second lists, and the transmission path through the third domain is better than that connecting the first and second nodes directly and a data transmission unit transmitting being transmitted data to the second node via the third domain. This invention also discloses a corresponding method.
Description
Technical field
The present invention relates to technical field of the computer network, more particularly, relate to a kind of data transmission system and method.
Background technology
Loose, the open computer network that the Internet is made up of the computer network of numerous autonomies, these autonomous computer networks are made up of numerous computer network of similar structures again.The computer network that these are autonomous directly a group of management comprise that the network equipment of router and switch is considered as one and manages the territory independently, majority is managed the territory independently by ISP (Internet Service Provider, ISP) investment, control, management.
Each form the Internet manage that the territory all is assigned AS (Autonomous System) number independently and the IP address field to guarantee being managed independently territory identification by in the Internet other.Provide by relevant management organization is unified with the IP address for AS number, as CNNIC, APNIC etc.Managing between the territory core Routing Protocol BGP (Border Gateway Protocol, marginal gateway protocol) by the Internet independently is broadcast to self AS and IP address field and is connected the router of respectively managing the territory independently.
Router is sought an optimal transmission paths for each Frame through router, and this Frame is sent to the purpose website effectively.Preserve routing table in the router, this routing table has write down the relevant data of various transmission paths, thereby realizes the transmission of Frame.Wherein, the routing table that connects the router preservation of respectively managing the territory independently is called global routing table, these routers are sought a preferable transmission path for each Frame through router, and these data are sent to effectively the territory of managing independently at purpose website place.Whole at osi model and TCP/IP reference model, this data frame transfer mode is referred to as the network layer route.
May own together by a family or how tame ISP for same AS number, each ISP is assigned to one or more IP address fields, these IP address fields have uniqueness, the IP address field can be used cidr block (ClasslessInter-Domain Routing) expression, when for example the IP address field was 65.254.224.0-65.254.255.255, its CIDR can be expressed as 65.254.224.0/19.Usually ISP can distribute to one or more management domains with continuous IP address field, and the network node in the same management domain externally demonstrates identical or similar network transmission performance, for example identical delay, bandwidth, transmittability etc.
Because existing optimal transmission paths is determined by the router that disperses in network layer, the choice criteria of these routers is except can be according to other router attribute that is obtained by bgp protocol, as weight (Weight), local preference (Local preference), multiple exit sign (Multi-exit discriminator), source (Origin), AS path (AS-Path), next jumping (Next hop), colony (Community) etc.In addition, the network operator who manages the territory independently of each autonomy also has the various balance indexes of self, for example the internet flow disbursement and sattlement between the ISP, Policy Conditions can not the opening scope etc., these balance indexes can influence the performance of data frame transfer equally, are not to be best thereby cause network layer established data transmission path frame.
In addition, router is not distinguished the different demands of various application when selecting transmission path.Some data in real time, the continuity transmission requirement is very high, VOIP etc. for example, and use the real-time of data just low such as Email, file download etc.Therefore the existing route device is not distinguished and is used and select transmission path can cause that the splendid router load amount of partial properties is excessive yet and cause network blockage.
The transmission path that the update cycle of routing table long (upgrading once in average 11 days), network layer are determined in the router is by autonomous domain manager controls (application layer can't change the network layer transmission path) such as ISP, the transmission path that causes router to be selected equally is not the best, causes data transmission efficiency low.
Summary of the invention
The technical problem that the embodiment of the invention will solve is, selects data transfer path to cause the low defective of data transmission efficiency at above-mentioned existing network layer, and a kind of data transmission system and method based on application layer is provided.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of data transmission system, be used for data to be transmitted is transferred to the Section Point that is positioned at second management domain from the first node that is positioned at first management domain, described first node comprises first tables of data that records the transmission performance between this first node and a plurality of management domain, described Section Point comprises second tables of data that records the transmission performance between this Section Point and a plurality of management domain, and described first node also comprises:
The tables of data acquiring unit is used to obtain second tables of data;
Selected cell is used for selecting one the 3rd management domain according to first tables of data and second tables of data from described a plurality of management domains, is better than directly connecting the transmission channel of first node and Section Point via the transmission channel of the 3rd management domain;
Data transmission unit is used for data to be transmitted is transferred to Section Point via the 3rd management domain.
In data transmission system of the present invention, the transmission channel that the 3rd management domain that described selected cell is selected and first management domain, second management domain are formed is better than the transmission channel via other management domain and first management domain, second management domain composition.
In data transmission system of the present invention, also comprise the routing management structure, described routing management structure comprises the 3rd tables of data and data synchronisation unit, wherein the 3rd tables of data is used to write down the transmission performance between first management domain and other management domain, and described data synchronisation unit is used for upgrading the 3rd tables of data according to the tables of data of the record transmission performance of each node of first management domain.
In data transmission system of the present invention, described first node comprises data updating unit, is used for upgrading first tables of data according to described the 3rd tables of data.
In data transmission system of the present invention, described transmission performance comprises one or more in data transmission delay, transmission bandwidth, the packet loss.
The present invention also provides a kind of data transmission method, be used for data to be transmitted is transferred to the Section Point that is positioned at second management domain from the first node that is positioned at first management domain, described first node comprises first tables of data that records the transmission performance between this first node and a plurality of management domain, described Section Point comprises second tables of data that records the transmission performance between this Section Point and a plurality of management domain, may further comprise the steps:
(a) first node obtains second tables of data;
(b) first node is selected one the 3rd management domain according to first tables of data and second tables of data from a plurality of management domains, is better than directly connecting the transmission channel of first node and Section Point via the transmission channel of the 3rd management domain;
(c) first node is transferred to Section Point with data to be transmitted via the 3rd management domain.
In data transmission method of the present invention, also comprise the transmission performance tables of data of routing management structure according to each node in first management domain, upgrade the transmission performance tables of data between first management domain and other management domain, first node upgrades the step of first tables of data according to transmission performance tables of data in the routing management structure.
In data transmission method of the present invention, transmission performance in described first tables of data and second tables of data comprises one or more in data transmission delay, transmission bandwidth, the packet loss, in described step (b), described first node is selected the 3rd management domain according to the different transmission performance indicators of data to be transmitted type selecting.
In data transmission method of the present invention, in the described step (b), when data to be transmitted is the audio session data, serve as to select the index of the 3rd management domain with the propagation delay time minimum; When data to be transmitted is the video session data, serve as to select the index of the 3rd management domain with transmission bandwidth and propagation delay time; When data to be transmitted is file, be the index of selecting the 3rd management domain to the maximum with transmission bandwidth; When data to be transmitted is the literal session data, serve as to select the index of the 3rd management domain with the packet loss minimum.
Data transmission system of the present invention and method realize transfer of data by select the node in the 3rd management domain in application layer as transit node, have effectively improved data transmission quality.In addition, the present invention has improved the service efficiency of the Internet also by the different transmission performance indicators of type selecting according to data to be transmitted.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of data transmission system first embodiment of the present invention;
Fig. 2 is the structural representation of first management domain among Fig. 1;
Fig. 3 is the structural representation of data transmission system second embodiment of the present invention;
Fig. 4 is the flow chart of data transmission method embodiment of the present invention.
Embodiment
Data transmission system of the present invention and method are used for transmitting data between the different management domains of the Internet.System and method of the present invention passes through to select transit node in application layer, thereby improves the Network Transmission quality.Below be example so that data to be transmitted is transferred to the Section Point that is positioned at second management domain from the first node that is positioned at first management domain, system and method for the present invention is described.
As shown in Figure 1, in an embodiment of data transmission system of the present invention, include first management domain 11, second management domain 12 and a plurality of other management domain 13, wherein comprise many data transmission channels between first management domain 11 and second management domain 12, direct data transmission channel between two management domains for example is perhaps respectively via the data transmission channel of a plurality of management domains 13.Certainly, also can interconnect between above-mentioned a plurality of management domain 13.
In the present embodiment, first management domain 11, second management domain 12 and management domain 13 are meant one group of network equipment that comprises router and switch, and comprise a network node at least, and wherein network node can be server or user terminal.Network node in the same management domain interior 11,12 or 13 externally demonstrates identical or similar network transmission performance, for example identical delay, bandwidth, transmittability etc.
As shown in Figure 2, the first above-mentioned management domain 11 includes first node 111 at least.This first node 111 can be user terminal (for example PC, digital multimedia terminal, smart mobile phone etc.) or the server that is connected to switch or router.
In the present embodiment, first node 111 includes first tables of data 112, tables of data acquiring unit 113, selected cell 114, data transmission unit 115.
First tables of data 112 is used to write down first management domain 11 at these first node 111 places and the transmission performance between second management domain 12 and a plurality of management domain 13.Above-mentioned transmission performance comprises one or more, as shown in table 1 in data transmission delay, transmission bandwidth, the packet loss.When specific implementation, this first tables of data 112 is used relevant database or other any type of storage form.
| The objective management territory | Data transmission delay |
| Management domain A | 50ms |
| Management domain B | 100ms |
| Management domain C | 80ms |
| Second management domain | 100ms |
| ...... | ...... |
Table 1: the first tables of data example
Correspondingly, the Section Point in second management domain 12 also comprises one second tables of data, and this second tables of data is used to write down second management domain 12 at Section Point 111 places and the transmission performance between first management domain 11 and a plurality of management domain 13.
Tables of data acquiring unit 113 is used for obtaining second tables of data from Section Point.In the present embodiment, the request that tables of data acquiring unit 113 will obtain second tables of data by the network layer route is sent to Section Point, and Section Point also is back to first node 11 by the network layer route with second tables of data.In concrete the application, tables of data acquiring unit 113 can directly obtain second tables of data from Section Point, also can pass through other node transfer, obtains second tables of data.
Selected cell 114 is used for the transmission performance that writes down according to first tables of data 112 and second tables of data, from a plurality of management domains, select one the 3rd management domain, be better than directly connecting the transmission channel of first node 11 and Section Point via the transmission channel of the 3rd management domain, and be better than transmission channel via other management domain.For example, when first tables of data 112 and second tables of data were respectively shown in table 1, table 2, selected cell 114 selected management domain A as transit node.
| The objective management territory | Data transmission delay |
| Management domain A | 40ms |
| Management domain B | 70ms |
| Management domain C | 60ms |
| First management domain | 100ms |
| ...... | ...... |
Table 2: the second tables of data example
Certainly, the first above-mentioned tables of data 112 can comprise different transmission performance indicators with second tables of data, for example data transmission delay, transmission bandwidth, packet loss, thereby can be according to the type selecting of the data to be transmitted different transmission performance indicators of selected cell 114.When data to be transmitted is the audio session data, serve as to select the index of the 3rd management domain for example with the propagation delay time minimum; When data to be transmitted is the video session data, serve as to select the index of the 3rd management domain with transmission bandwidth and propagation delay time; When data to be transmitted is file, be the index of selecting the 3rd management domain to the maximum with transmission bandwidth; When data to be transmitted is the literal session data, serve as to select the index of the 3rd management domain with the packet loss minimum.
As shown in Figure 3, in the second embodiment of the present invention, first node 111 is also connected to a routing management structure 31.This routing management structure 31 is connected with a plurality of nodes, is used to realize the node that is attached thereto and the internodal data interaction under other routing management structure, and it comprises a user terminal or server at least.In concrete the application, routing management structure 31 is independent of management domain, and it can serve a plurality of management domains.In the Internet, can comprise a plurality of routing management structures 31.
In the present embodiment, routing management structure 31 comprises the 3rd tables of data 313 and data synchronisation unit 314.
The 3rd tables of data 313 is used to write down the transmission performance between first management domain 11 and second management domain 12 and a plurality of management domain 13.The 3rd tables of data 313 can realize by relevant database or other any storage form.Certainly, also can comprise the node place management domain that is attached thereto and the transmission performance between other management domain in the 3rd tables of data 313.
Certainly, except upgrading first tables of data 112 by the 3rd tables of data 313 among second embodiment, also can upgrade transmission performance data in first tables of data 113 by other arbitrary existing mode.
In addition,, perhaps each unit in the routing infrastructure body 31 is placed first node 111, can realize effect of the present invention equally if each unit in the first node 111 is placed above-mentioned routing infrastructure body 31.Second management domain 12 and management domain 13 have identical or similar structure with first management domain 11, belong to the part of the Internet, and all nodes in these management domains (for example Section Point) all have identical structure with first node 111, thereby realize any two internodal transfer of data in the Internet.
As shown in Figure 4, it is the flow chart of an embodiment of data transmission method of the present invention, this method is used for data to be transmitted is transferred to the Section Point that is positioned at second management domain 12 from the first node 111 that is positioned at first management domain 11, wherein first node 111 comprises first tables of data 112 of the transmission performance that records between this first node and a plurality of management domain, Section Point comprises second tables of data that records the transmission performance between this Section Point and a plurality of management domain, may further comprise the steps:
Step S41: first node 111 directly obtains or obtains second tables of data via transit node from Section Point.In the present embodiment, this step is by the route implementing of the network layer of the Internet.
Step S42: first node 111 is selected one the 3rd management domain according to first tables of data and second tables of data from a plurality of management domains, be better than directly connecting the transmission channel of first node 11 and Section Point via the transmission channel of the 3rd management domain, and be better than transmission channel via other management domain.
Transmission performance in first tables of data and second tables of data comprises one or more in data transmission delay, transmission bandwidth, the packet loss, and first node 111 is that index is selected the 3rd management domain according to the different transmission performance of data to be transmitted type selecting in this step.When data to be transmitted is the audio session data, serve as to select the index of the 3rd management domain for example with the propagation delay time minimum; When data to be transmitted is the video session data, serve as to select the index of the 3rd management domain with transmission bandwidth and propagation delay time; When data to be transmitted is file, be the index of selecting the 3rd management domain to the maximum with transmission bandwidth; When data to be transmitted is the literal session data, serve as to select the index of the 3rd management domain with the packet loss minimum.
Step S43: first node 11 is transferred to Section Point with data to be transmitted via the 3rd management domain.In this step, first node 111 selects a concrete node to carry out transfer of data from the 3rd management domain.
In addition, in other embodiments of the invention, also comprise the routing management structure,, upgrade the transmission performance tables of data between first management domain 11 and other management domain according to the transmission performance tables of data (for example first tables of data 112) of each node in first management domain 11; And first node 11 upgrades first tables of data 112 regularly according to transmission performance tables of data in the routing management structure.Similarly, second tables of data in the Section Point of second management domain 12 is also upgraded in the same manner.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (9)
1, a kind of data transmission system, be used for data to be transmitted is transferred to the Section Point that is positioned at second management domain from the first node that is positioned at first management domain, it is characterized in that, described first node comprises first tables of data that records the transmission performance between this first node and a plurality of management domain, described Section Point comprises second tables of data that records the transmission performance between this Section Point and a plurality of management domain, and described first node also comprises:
The tables of data acquiring unit is used to obtain second tables of data;
Selected cell is used for selecting one the 3rd management domain according to first tables of data and second tables of data from described a plurality of management domains, is better than directly connecting the transmission channel of first node and Section Point via the transmission channel of the 3rd management domain;
Data transmission unit is used for data to be transmitted is transferred to Section Point via the 3rd management domain.
2, data transmission system according to claim 1, it is characterized in that the transmission channel that the 3rd management domain that described selected cell is selected and first management domain, second management domain are formed is better than the transmission channel via other management domain and first management domain, second management domain composition.
3, data transmission system according to claim 1, it is characterized in that, also comprise the routing management structure, described routing management structure comprises the 3rd tables of data and data synchronisation unit, wherein the 3rd tables of data is used to write down the transmission performance between first management domain and other management domain, and described data synchronisation unit is used for upgrading the 3rd tables of data according to the tables of data of the record transmission performance of each node of first management domain.
4, data transmission system according to claim 3 is characterized in that, described first node comprises data updating unit, is used for upgrading first tables of data according to described the 3rd tables of data.
According to each described data transmission system among the claim 1-4, it is characterized in that 5, described transmission performance comprises one or more in data transmission delay, transmission bandwidth, the packet loss.
6, a kind of data transmission method, be used for data to be transmitted is transferred to the Section Point that is positioned at second management domain from the first node that is positioned at first management domain, it is characterized in that, described first node comprises first tables of data that records the transmission performance between this first node and a plurality of management domain, described Section Point comprises second tables of data that records the transmission performance between this Section Point and a plurality of management domain, may further comprise the steps:
(a) first node obtains second tables of data;
(b) first node is selected one the 3rd management domain according to first tables of data and second tables of data from a plurality of management domains, is better than directly connecting the transmission channel of first node and Section Point via the transmission channel of the 3rd management domain;
(c) first node is transferred to Section Point with data to be transmitted via the 3rd management domain.
7, data transmission method according to claim 6, it is characterized in that, also comprise the transmission performance tables of data of routing management structure according to each node in first management domain, upgrade the transmission performance tables of data between first management domain and other management domain, first node upgrades the step of first tables of data according to transmission performance tables of data in the routing management structure.
8, data transmission method according to claim 6, it is characterized in that, transmission performance in described first tables of data and second tables of data comprises one or more in data transmission delay, transmission bandwidth, the packet loss, in described step (b), described first node is selected the 3rd management domain according to the different transmission performance indicators of data to be transmitted type selecting.
9, data transmission method according to claim 8 is characterized in that, in the described step (b), when data to be transmitted is the audio session data, serves as to select the index of the 3rd management domain with the propagation delay time minimum; When data to be transmitted is the video session data, serve as to select the index of the 3rd management domain with transmission bandwidth and propagation delay time; When data to be transmitted is file, be the index of selecting the 3rd management domain to the maximum with transmission bandwidth; When data to be transmitted is the literal session data, serve as to select the index of the 3rd management domain with the packet loss minimum.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101675616A CN101001195A (en) | 2006-12-19 | 2006-12-19 | Data transmission system and method |
| PCT/CN2007/002788 WO2008074207A1 (en) | 2006-12-19 | 2007-09-21 | Data transmission system and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101675616A CN101001195A (en) | 2006-12-19 | 2006-12-19 | Data transmission system and method |
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| CN101001195A true CN101001195A (en) | 2007-07-18 |
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| CNA2006101675616A Pending CN101001195A (en) | 2006-12-19 | 2006-12-19 | Data transmission system and method |
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| WO (1) | WO2008074207A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185841A (en) * | 2011-04-25 | 2011-09-14 | 上海爱数软件有限公司 | Classified data transmission method and system |
| WO2015010556A1 (en) * | 2013-07-22 | 2015-01-29 | Tencent Technology (Shenzhen) Company Limited | Methods,devices,and systems for controlling audio and video transmission channel |
| CN104768078A (en) * | 2015-04-16 | 2015-07-08 | 无锡天脉聚源传媒科技有限公司 | Video transmission method and system |
| CN108040009A (en) * | 2017-11-15 | 2018-05-15 | 平安科技（深圳）有限公司 | Data directional transmission method, data directional transmissions control device and computer-readable recording medium |
| CN111163363A (en) * | 2019-12-26 | 2020-05-15 | 武汉兴图新科电子股份有限公司 | Method for dynamically adjusting video transmission route |
| CN113472827A (en) * | 2020-03-30 | 2021-10-01 | 杭州海康威视数字技术股份有限公司 | Data transmission method, data transmission device and data transmission system |
| WO2022143034A1 (en) * | 2020-12-31 | 2022-07-07 | 华为技术有限公司 | Method for transmitting screen-projection audio and video data, and related devices |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6967941B2 (en) * | 2000-05-02 | 2005-11-22 | At&T Corp. | System and method for inter-domain mobility management |
| AU2002310579A1 (en) * | 2002-05-31 | 2003-12-19 | Nokia Corporation | Routing method and network structure |
| US7096022B2 (en) * | 2002-10-08 | 2006-08-22 | Ntt Docomo, Inc. | System and method for supporting quality of service in vertical handovers between heterogeneous networks |
| US20060262776A1 (en) * | 2005-05-23 | 2006-11-23 | Pollock Graham S | System and method for auto-discovery of peering and routing in a combined circuit -switched/packet-switched communication network using trip protocol |
-
2006
- 2006-12-19 CN CNA2006101675616A patent/CN101001195A/en active Pending
-
2007
- 2007-09-21 WO PCT/CN2007/002788 patent/WO2008074207A1/en active Application Filing
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185841A (en) * | 2011-04-25 | 2011-09-14 | 上海爱数软件有限公司 | Classified data transmission method and system |
| WO2015010556A1 (en) * | 2013-07-22 | 2015-01-29 | Tencent Technology (Shenzhen) Company Limited | Methods,devices,and systems for controlling audio and video transmission channel |
| CN104768078A (en) * | 2015-04-16 | 2015-07-08 | 无锡天脉聚源传媒科技有限公司 | Video transmission method and system |
| CN108040009A (en) * | 2017-11-15 | 2018-05-15 | 平安科技（深圳）有限公司 | Data directional transmission method, data directional transmissions control device and computer-readable recording medium |
| CN108040009B (en) * | 2017-11-15 | 2021-01-26 | 平安科技（深圳）有限公司 | Data directional transmission method, data directional transmission control device and computer readable storage medium |
| CN111163363A (en) * | 2019-12-26 | 2020-05-15 | 武汉兴图新科电子股份有限公司 | Method for dynamically adjusting video transmission route |
| CN113472827A (en) * | 2020-03-30 | 2021-10-01 | 杭州海康威视数字技术股份有限公司 | Data transmission method, data transmission device and data transmission system |
| CN113472827B (en) * | 2020-03-30 | 2023-09-05 | 杭州海康威视数字技术股份有限公司 | Data transmission method, data transmission device and data transmission system |
| WO2022143034A1 (en) * | 2020-12-31 | 2022-07-07 | 华为技术有限公司 | Method for transmitting screen-projection audio and video data, and related devices |
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|---|---|
| WO2008074207A1 (en) | 2008-06-26 |
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