CN107041015A - Net is avoided to pass the method for data collision, avoid net from passing data collision system - Google Patents
Net is avoided to pass the method for data collision, avoid net from passing data collision system Download PDFInfo
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- CN107041015A CN107041015A CN201710224734.1A CN201710224734A CN107041015A CN 107041015 A CN107041015 A CN 107041015A CN 201710224734 A CN201710224734 A CN 201710224734A CN 107041015 A CN107041015 A CN 107041015A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000013480 data collection Methods 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
- H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses the method for avoiding net from passing data collision, it is characterised in that comprising having the following steps：A. for any one data collection station, the emission time signal T of transmission data is sent to data receiver before transmitting datai, wherein i is natural number；B. data receiver is to these signal T from data collection stationiIt is compared, in T1To TiIn these data, if two different and minimum interval times of delivery time are more than Tlenth, TlenthRepresent the average time needed for data are sent, Tlenth=L/V, L represent data average size, and V represents transmission rate, then these acquisition terminals are immediately performed data and send order；C. for delivery time TiThe identical or largest interval time is less than Tlenth, then acquisition terminal each produce a random number △ Ti, it is used as transmission time delay, final delivery time Ti=Tlenth+△Ti.Solve the problem of error in data drags slow backstage simultaneously caused by data collision is uploaded in many station terminal data sets, with the reliable advantage of data transmission security.
Description
Technical field
Wireless communication field of the present invention, in particular it relates to avoid the method and system of net biography data collision.
Background technology
At present, row data communication has been entered using WLAN (Wireless Local Area Networks, WLAN)
It is global growing to WLAN coverings demand through very universal.IEEE(Institute ofElectrical and
Electronic Engineers, Institute of Electrical and Electric Engineers) 802.11 groups of industrial specification successively defines 802.11a/
The series of standards such as b/g/n/ac meet ever-increasing communication requirement.
In OFDM (Orthogonal Frequency Division Multiplexing, OFDM) system
In, include two parts：Physical layer preamble and data division.Physical layer preamble is included：The leading and short training of compatible legacy equipment
Practice domain, long training domain, signaling domain etc..In order to reduce expense, the protocol definitions of IEEE 802.11 NDP (Null data
Packet, empty packet), refer to the physical layer bag for only not including data division comprising physical layer preamble.
The basic framework of WLAN refers to a BSS (basic service set, Basic Service Set), includes one
AP (access point, access point) and the multiple STAs (Station, website) associated with AP
If the working region of the access point in two BSS has overlapping, the used working band phase of access point/website
With or have overlapping, the two BSS are referred to as OBSS (Overlapping basicserviceset, Overlapping Basic Service Set).
More and more intensive with WLAN deployment, the collision between BSS is increasingly severe, and OBSS problems are increasingly severe.
The content of the invention
First purpose of the present invention is that in order to solve the above-mentioned technical problem there is provided the side for avoiding net from passing data collision
Method.
To achieve these goals, the technical solution adopted by the present invention is：
The method for avoiding net from passing data collision, it is characterised in that comprising having the following steps：
A. for any one data collection station, transmission data are sent to data receiver before transmitting data
Emission time signal Ti, wherein i is natural number；
B. data receiver is to these signal T from data collection stationiIt is compared, in T1To TiThese data
In, if two different and minimum interval times of delivery time are more than Tlenth, TlenthRepresent the mean time needed for data are sent
Between, Tlenth=L/V, L represent data average size, and V represents transmission rate, then these acquisition terminals are immediately performed data and send life
Order；
C. for delivery time TiThe identical or largest interval time is less than Tlenth, then acquisition terminal each produce one it is random
Number △ Ti, it is used as transmission time delay, final delivery time Ti=Tlenth+△Ti。
Further, the △ TiT should be much larger thanlenth。
Further, △ TiSpan is 1 to 5, and unit is S.
Second object of the present invention is in order to solve the above-mentioned technical problem to avoid net from passing data collision there is provided a kind of
System.
In order to realize second purpose, the technical solution adopted by the present invention is：
Net is avoided to pass data collision system, it is characterised in that to include：
Data acquisition terminal equipment, including at least two；Random number acoustical generator is provided with every data acquisition terminal equipment；
Data receiver, for receiving the data from data acquisition terminal equipment；
LAN, data acquisition terminal equipment and data receiver are wirelessly connected.
Further, the random number that the random number acoustical generator is produced is limited to 1 to 5.
Beneficial effect produced by two technical schemes of the invention is：Using random number and delay technique, change data is adopted
At the time of collecting terminal transmission data, solve because being uploaded in many station terminal data sets, data collision causes error in data while dragging slow
The problem of backstage, with the reliable advantage of data transmission security.
Brief description of the drawings
Fig. 1 avoids net from passing data collision system schematic for the present invention's；
Fig. 2 avoids net from passing data collision system job step schematic diagram for the present invention's.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " are, based on orientation shown in the drawings or position relationship, to be for only for ease of
The description present invention and simplified description, rather than indicate or imply that the device or element of meaning must have specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In the description of the invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；It can be machine
Tool is connected or electrically connected；Can be joined directly together, can also be indirectly connected to by intermediary, can be two members
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it " under "
Can directly it be contacted including the first and second features, it is not direct contact but by it that can also include the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " to include first special
Levy directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " fisrt feature that includes are immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
The present invention is described in further detail below by embodiment combination accompanying drawing.
With reference to shown in Fig. 1, it is to avoid net biography data collision system, data acquisition terminal equipment, including at least two；Per number of units
According in acquisition terminal equipment be provided with random number acoustical generator (not shown)；Data receiver, it is whole from data acquisition for receiving
The data of end equipment；LAN, includes wireless module and wireless transceiver, and data acquisition terminal equipment and data receiver are set
It is standby wirelessly to connect.
This is avoided the control method of net biography data collision system as follows：
A. for any one data collection station, transmission data are sent to data receiver before transmitting data
Emission time signal Ti, wherein i is natural number；
B. data receiver is to these signal T from data collection stationiIt is compared, in T1To TiThese data
In, if two different and minimum interval times of delivery time are more than Tlenth, TlenthRepresent the mean time needed for data are sent
Between, Tlenth=L/V, L represent data average size, and V represents transmission rate, then these acquisition terminals are immediately performed data and send life
Order；
C. for delivery time TiThe identical or largest interval time is less than Tlenth, then acquisition terminal each produce one it is random
Number △ Ti, it is used as transmission time delay, final delivery time Ti=Tlenth+△Ti。
Further, the △ TiT should be much larger thanlenth。
Further, △ TiSpan is 1 to 5, and unit is S.Certainly, according to actual data capacity, this value
Scope can be set as other numerical value, such as 1 to 20.
For example, in a system, with 5 data collection stations, a data receiver, 5 data acquisition ends
The capacity that end single is averagely sent is 10M, and the speed of network wireless transmission is 40M/S, then the time needed for single is sent is 1/
4S, if the minimum interval that 5 data collection stations send the data moment is more than 1/4S, then this 5 data terminals are immediately performed
Data send order, if the largest interval that 5 data collection stations send the data moment is less than 1/4S, then 5 data acquisitions
Terminal will produce a random number as the time delay of transmission between 1 to 5, if it is 2 ＇ at the time of pressing send key
The ＂ of 10 ＇ 32, random number is 3, then final delivery time is then Ti=Tlenth+△Ti＂+the 3s+1/4s of 10 ＇ of=2 ＇ 32.
In the description of this specification, reference term " embodiment ", " some embodiments ", " an implementation
The description of example ", " some embodiments ", " example ", " specific example " or " some examples " etc. means to combine the embodiment or example
Specific features, structure, material or the feature of description are contained at least one embodiment of the present invention or example.In this explanation
In book, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover, the specific spy of description
Levy, structure, material or feature can in an appropriate manner be combined in any one or more embodiments or example.
Above content is to combine specific embodiment further description made for the present invention, it is impossible to assert this hair
Bright specific implementation is confined to these explanations.For general technical staff of the technical field of the invention, do not taking off
On the premise of from present inventive concept, some simple deduction or replace can also be made.
Claims (5)
1. the method for avoiding net from passing data collision, it is characterised in that comprising having the following steps：
A. for any one data collection station, the transmitting of transmission data is sent to data receiver before transmitting data
Time-ofday signals Ti, wherein i is natural number；
B. data receiver is to these signal T from data collection stationiIt is compared, in T1To TiIn these data, if
Two different and minimum interval times of delivery time are more than Tlenth, TlenthThe average time needed for data are sent is represented,
Tlenth=L/V, L represent data average size, and V represents transmission rate, then these acquisition terminals are immediately performed data and send order；
C. for delivery time TiThe identical or largest interval time is less than Tlenth, then acquisition terminal each produce a random number △
Ti, it is used as transmission time delay, final delivery time Ti=Tlenth+△Ti。
2. the method as claimed in claim 1 for avoiding net from passing data collision, it is characterised in that the △ TiIt should be much larger than
Tlenth。
3. the method as claimed in claim 2 for avoiding net from passing data collision, it is characterised in that △ TiSpan is 1 to 5, single
Position is S.
4. avoid net from passing data collision system, it is characterised in that to include：
Data acquisition terminal equipment, including at least two；Random number acoustical generator is provided with every data acquisition terminal equipment；
Data receiver, for receiving the data from data acquisition terminal equipment；
LAN, data acquisition terminal equipment and data receiver are wirelessly connected.
5. as claimed in claim 4 avoid net from passing data collision system, it is characterised in that what the random number acoustical generator was produced
Random number is limited to 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710224734.1A CN107041015B (en) | 2017-04-07 | 2017-04-07 | Method for avoiding network transmission data collision |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710224734.1A CN107041015B (en) | 2017-04-07 | 2017-04-07 | Method for avoiding network transmission data collision |
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| CN107041015A true CN107041015A (en) | 2017-08-11 |
| CN107041015B CN107041015B (en) | 2020-01-10 |
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| CN201710224734.1A Active CN107041015B (en) | 2017-04-07 | 2017-04-07 | Method for avoiding network transmission data collision |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111478933A (en) * | 2019-01-24 | 2020-07-31 | 北京沃东天骏信息技术有限公司 | Application cluster data preloading method, device, storage medium, equipment and system |
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| CN1405672A (en) * | 2001-09-07 | 2003-03-26 | 日本电气株式会社 | Random number generating method and random number generating device |
| US20090045920A1 (en) * | 2007-08-15 | 2009-02-19 | Mcquaide Jr Arnold Chester | Methods, systems, and products for discovering electronic devices |
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| CN107041015B (en) | 2020-01-10 |
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