CN1165139C - Unidirectional file-distributing method in Ethernet environment - Google Patents
Unidirectional file-distributing method in Ethernet environment Download PDFInfo
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- CN1165139C CN1165139C CNB011186275A CN01118627A CN1165139C CN 1165139 C CN1165139 C CN 1165139C CN B011186275 A CNB011186275 A CN B011186275A CN 01118627 A CN01118627 A CN 01118627A CN 1165139 C CN1165139 C CN 1165139C
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Abstract
The present invention relates to a method for distributing unidirectional documents, which comprises the following steps that a document to be sent is packed, and the time interval of the document packet is fixed; a sending speed is determined; one second is divided into a plurality of time slices which are longer than the time interval of the document packet; the document packet is sent within a certain time slice according to an access interception mechanism. The present invention can adopt a bandwidth multiplexing technique for well use of bandwidth, and transmission cost is lowered. The uniformity of the bandwidth without dithering can also be realized. A lot of transmission sections are carried out in the transmission process, no loss of the document packet exists, and a transmission speed can also be further enhanced. The present invention has the advantages of low technical cost and convenient generalization.
Description
The present invention relates to a kind of method of unidirectional file distributing, belong to computer communication field.
Using widely at present, Ethernet is to adopt the mode of visiting/intercepting agreement to communicate, promptly when a certain user need be to online transmission file bag, whether at first intercept has other users sending file on the net, if any, transmitting time of random delay then, intercept once more, in case when not having other users to send file on the net, just the file bag with oneself sends.That is to say that the client on the Ethernet is that competitive way sends the file bag.Under this environment,, can't guarantee transmission bandwidth because it is very big to send the randomness of file bag.Other has a kind of method that adopts time division circuit to send file, it is at file transmitting terminal and receiving terminal clock synchronization circuit to be installed all, a plurality of timeslices will be divided into for 1 second, the timeslice that different customer uses is different, though this kind method can effectively guarantee to send bandwidth, but cost is higher, underaction during use.
For addressing the above problem, the purpose of this invention is to provide a kind of under ethernet environment unidirectional evenly and have bandwidth to guarantee to send the method for file.
The present invention has adopted following file transmitting method:
---desire is sent file packing, and fixing this document bag time span;
---determine transmission rate;
---the time in second is divided into several timeslices, and the length of this timeslice should be greater than the time span of above-mentioned file bag;
---intercept machine-processed above-mentioned file is wrapped in certain timeslice according to visit and send.
---under the situation of a plurality of channels, each timeslice in several timeslices also can continue to be divided into the experimental process timeslice according to the length of a file bag.
---under the situation of a plurality of channels, can according to priority in certain minor time slice, send corresponding file bag not in proper order.
Now the present invention is described further in conjunction with the accompanying drawings:
Accompanying drawing 1 is the inventive method flow chart;
Accompanying drawing 2 sends a file bag required time length for the inventive method and the time division leaf length concerns schematic diagram;
Accompanying drawing 3 is under the situation of a plurality of channels, sends a needed time span of file bag and time division leaf length and concerns schematic diagram.
As shown in Figure 1, the inventive method can be carried out as follows:
---desire is sent file packing, and fixing this document packet length;
---determine transmission rate;
---the time in second is divided into several timeslices, and the length of this timeslice should be greater than sending the needed time span of above-mentioned file bag;
---intercept machine-processed above-mentioned file is wrapped in certain timeslice according to visit and send.
---under the situation of a plurality of channels, each timeslice in several timeslices also can continue to be divided into the experimental process timeslice according to sending a needed time of file bag.
---under the situation of a plurality of channels, can according to priority in certain minor time slice, send corresponding file bag not in proper order.
As shown in Figure 2, its length of file bag that needs to send is predetermined fixed, the division of timeslice (1) must be greater than sending the long needed time of file bag (2) of this fixed packet, and for example the length of timeslice can be to send 0.01～50 times of the long required time span of file bag of this fixed packet.
As shown in Figure 3, under the situation of a plurality of channels, each timeslice in several timeslices also can continue to be divided into experimental process timeslice (3) according to the time span (2) that sends a file bag
One 100,000,000 Ethernet for example, its speed are that per second transmits 10
8Individual position can follow these steps to carry out when transmitting file:
---the file that will transmit packing, and the length of fixing each file bag, as the length of fixing each file bag is 1250 bytes;
---determine that transmission frequency is a per second 10
4Inferior, be about to per second and be divided into 10000 timeslices; This transmission rate maximum can not surpass the speed of Ethernet;
---send a ratio and special procure 1/10
8Second, sending 1250 bytes needs 1250 * 8/10
8Second;
---each timeslice transmits the file bag of one 1250 byte, and then per second transmits altogether:
1250 * 8 * 10000=10
8(position/per second)=10
8Bps that is when the length of the fixing file bag that sends be 1250 bytes, when 1 time in second was divided into 10000 timeslices, the needed time span of transmission this document bag equals the timeslice length cut apart.This is a peak in theory, in the ordinary course of things, is divided into 10000 timeslices as 1 second, determines that the length of file bag should be less than 1250 bytes, for example 1024 bytes.Each file bag also has the redundancy of packet header bag tail in the actual conditions, between bag and the bag certain hour gap is arranged, and it is impossible really reaching 100,000,000 transfer of data.
By that analogy,, timeslice can be adjusted into 5000 timeslices of per second or 10000 timeslices, get final product but 2 timeslices transmit a file bag if we transmit file by 50,000,000 bandwidth.
Under the situation of a plurality of channels, for example: under the situation of 3 channels, still be example, at first per second can be divided into 1000 timeslices with glue file bag Bao Changwei 1250 bytes, each timeslice in 1000 timeslices also can continue to be divided into 3 minor time slices greater than the division methods that sends a file bag required time length according to its length, having under the situation of priority, can in a preferential order send the file bag in proper order.The method of above-mentioned control bandwidth can be used for sending the file bag by a computer, and other computer receives in the ethernet environment of file bag, for example: unidirectional satellite network, unidirectional wired network etc.
On Ethernet, realize the method for the effective control bandwidth of unidirectional file distributing, can adopt the bandwidth reuse technology, utilize bandwidth better, reduced transmission cost.Adopt the inventive method, can realize that bandwidth evenly do not shake, in transmission course,, can not cause packet loss, also can further improve transmission rate through many transmission links.Since at the bottom of the Ethernet cost, technology maturation, and the corresponding apparatus price is low, is convenient to promote the popularization use.
Claims (3)
1, a kind of method in the distribution of ethernet environment unidirectional file is characterized in that may further comprise the steps:
A. desire is sent file packing, and fixing this document bag time span;
B. determine transmission rate;
C. the time in second is divided into several timeslices, the length of this timeslice is greater than the time span that sends above-mentioned file bag;
D. intercepting machine-processed above-mentioned file is wrapped in certain timeslice according to visit sends.
2, according to claim 1 or 2 described a kind of methods in the distribution of ethernet environment unidirectional file, it is characterized in that, under the situation of a plurality of channels, each timeslice in several timeslices also can continue to be divided into the experimental process timeslice according to the time span that sends a file bag.
3, a kind of method in the distribution of ethernet environment unidirectional file according to claim 1 and 2, its feature also are, under the situation of a plurality of channels, can send in certain minor time slice by the priority level order of file.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011186275A CN1165139C (en) | 2001-06-05 | 2001-06-05 | Unidirectional file-distributing method in Ethernet environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011186275A CN1165139C (en) | 2001-06-05 | 2001-06-05 | Unidirectional file-distributing method in Ethernet environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1390016A CN1390016A (en) | 2003-01-08 |
| CN1165139C true CN1165139C (en) | 2004-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011186275A Expired - Fee Related CN1165139C (en) | 2001-06-05 | 2001-06-05 | Unidirectional file-distributing method in Ethernet environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1165139C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100349430C (en) * | 2003-03-13 | 2007-11-14 | 华为技术有限公司 | Method for improving network transmission efficiency of wireless local network system |
| US7929436B2 (en) * | 2007-07-02 | 2011-04-19 | Aten International Co., Ltd. | Network communication control methods and systems |
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2001
- 2001-06-05 CN CNB011186275A patent/CN1165139C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1390016A (en) | 2003-01-08 |
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Owner name: WANG HAIYING Free format text: FORMER OWNER: WANG XIAOQIN Effective date: 20060714 |
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Effective date of registration: 20060714 Address after: 102206 Beijing city Changping District town of Shahe bishuipengwan 197 Patentee after: Wang Haiying Address before: 100039, No. 2, Fuxing Road, Beijing, No. 12, No. 83, west gate, Haidian District Patentee before: Wang Xiaoqin |
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| C17 | Cessation of patent right | ||
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Granted publication date: 20040901 Termination date: 20120605 |