CN106209551A - A kind of data transmission method being combined with TDMA based on poll and device - Google Patents
A kind of data transmission method being combined with TDMA based on poll and device Download PDFInfo
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- CN106209551A CN106209551A CN201610506400.9A CN201610506400A CN106209551A CN 106209551 A CN106209551 A CN 106209551A CN 201610506400 A CN201610506400 A CN 201610506400A CN 106209551 A CN106209551 A CN 106209551A
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- Prior art keywords
- centroid
- time slot
- data signal
- data
- terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/403—Bus networks with centralised control, e.g. polling
- H04L12/4035—Bus networks with centralised control, e.g. polling in which slots of a TDMA packet structure are assigned based on a contention resolution carried out at a master unit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/403—Bus networks with centralised control, e.g. polling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/423—Loop networks with centralised control, e.g. polling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/427—Loop networks with decentralised control
- H04L12/43—Loop networks with decentralised control with synchronous transmission, e.g. time division multiplex [TDM], slotted rings
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
The present invention relates to technical field of data transmission, disclose a kind of data transmission method being combined based on poll and device with TDMA, described method relates to the Centroid under TDMA mode of operation and terminal, it is characterized in that, described method comprises the following specific steps that: described Centroid is that at least one described terminal distributes time slot；Described terminal sends data signal in the described time slot of distribution；If described Centroid judges to receive the failure of described data signal, the most described Centroid indicates described terminal to retransmit described data signal；Described Centroid extracts after data are reintegrated after receiving described data signal and exports.Present invention achieves the data transmission mechanism that poll combines with TDMA, form complete data down transmission and reception, improve synchronicity and the reliability of data transmission.
Description
Technical field
The present invention relates to technical field of data transmission, particularly to a kind of transmission side data being combined with TDMA based on poll
Method and device.
Background technology
Along with developing rapidly and the internationalization day by day of General Aviation activity of aeronautical technology, mass data transmission needs to exist
Carrying out in ANT/IPS network, it is relatively big that ANT/IPS network has time delay, and communication link switches feature frequently, consequently, it is possible to cause
Data are at the data-bag lost of transmitting procedure, it is ensured that mass data is not lost in transmitting procedure and can correctly transmit, and is also
The problem that aviation field is studied always.
In the prior art, it is contemplated that deep space communication distance is bigger, adds upper signal channel and has fading characteristic, result in reception
The signal to noise ratio of end is low, and the corresponding bit error rate is the highest, and data-bag lost is serious, uses the existing data transmission mechanism can not
Enough well this problems of solution, cause the blank in certain particular data transmission field.
Summary of the invention
For the defect of prior art, it is serious that the present invention solves data-bag lost, the biography down of data and receive imperfect,
Data transmission credibility and the strongest technical problem of real-time.
For solving the problems referred to above, the invention provides a kind of data transmission method being combined based on poll with TDMA, described
Method relates to the Centroid under TDMA mode of operation and terminal, it is characterised in that described method comprises the following specific steps that:
Described Centroid is that at least one described terminal distributes time slot；
Described terminal sends data signal in the described time slot of distribution；
If described Centroid judges to receive the failure of described data signal, the most described Centroid indicates described terminal to retransmit
Described data signal；
Described Centroid extracts after data are reintegrated after receiving described data signal and exports.
Preferably, described Centroid is that at least one described terminal distribution time slot includes:
Described Centroid transmission time slot distribution command signal；
Described terminal determines the time slot of distribution after receiving described time slot distribution command signal.
Preferably, described terminal sends described data signal and described Centroid receives described data signal same
In the described time slot of distribution.
Preferably, described Centroid judges that receiving described data signal unsuccessfully includes:
Described Centroid receives described data signal mistake or loses described data signal.
Preferably, described Centroid indicates the described data signal of described terminal repeating transmission to include:
In unappropriated time slot, described Centroid launches poll command signal；
Described terminal resends described data signal after receiving described poll command signal.
The invention provides a kind of data transmission device being combined based on poll with TDMA, described device relates to TDMA work
Centroid under pattern and terminal, it is characterised in that described device includes:
Time slot distribution module, is that at least one described terminal distributes time slot for described Centroid；
Data transmit-receive module, sends data signal for described terminal in the described time slot of distribution；
Poll instruction module, if described Centroid judges to receive the failure of described data signal, the most described Centroid refers to
Show that described terminal retransmits described data signal；
Integrating output module, described Centroid extracts after data are reintegrated after receiving described data signal and exports.
Preferably, time slot distribution module specifically for:
Described Centroid transmission time slot distribution command signal；
Described terminal determines the time slot of distribution after receiving described time slot distribution command signal.
Preferably, described terminal sends described data signal and described Centroid receives described data signal same
In the described time slot of distribution.
Preferably, the Centroid determinating receiving data Signal Fail of described poll instruction module specifically includes:
Described Centroid receives described data signal mistake or loses described data signal.
Preferably, described poll instruction module is additionally operable to:
In unappropriated time slot, described Centroid launches poll command signal；
The data transmit-receive module of described terminal resends described data signal after receiving described poll command signal.
In the present invention, Data Transport Protocol according to a preconcerted arrangement, if Centroid distribution time slot be not properly received right
Answer the data signal that terminal passes down, automatically use polling mode to obtain the data lost at unappropriated time slot, it is desirable to this terminal
Retransmit unreceived packet, the data transmission mechanism using poll to combine with TDMA, form complete data down transmission and connect
Receive；Can be used for a kind of Centroid the data of multiple terminals are distributed and obtains, it is ensured that the reliability of data transmission is with in real time
Property, fill the blank in certain certain number biography field.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the poll working method of the present invention；
Fig. 2 is the schematic flow sheet of the TDMA working method of the present invention；
Fig. 3 is the data transmission method flow process signal being combined with TDMA based on poll in a preferred embodiment of the present invention
Figure；
Fig. 4 is the data transmission device structural representation being combined with TDMA based on poll in a preferred embodiment of the present invention
Figure.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe wholely.Obviously, described embodiment is to implement the better embodiment of the present invention, and described description is that the present invention is described
Rule for the purpose of, be not limited to the scope of the present invention.Protection scope of the present invention should be with claim institute circle
The person of determining is as the criterion, and based on the embodiment in the present invention, those of ordinary skill in the art are not on the premise of making creative work
The every other embodiment obtained, broadly falls into the scope of protection of the invention.
See Fig. 1, polling mode be Centroid to terminal one by one call the roll inquiry mode.Specifically include: center
Node launches management signal to terminal, it is desirable to the terminal down-transmitting data called the roll.Call the roll inquiry every time, under terminal, pass appointment data
The data of bag, Centroid receives the data specifying packet.After repeatedly poll, terminal complete complete data down transmission and
Receive.But, a transmission with in the reception cycle, polling mode has propagation delay time and specific time delay.
See Fig. 2, TDMA, i.e. the principle of time division multiple access way is, is formed based on TDMA system with Centroid by terminal
The wireless network of work, Centroid and terminal carry out data transmit-receive at the time slot of distribution.Centroid is in transmitting school, time zone, school
Time signal, safeguard network time synchronization, launching management signal in directorial area is that each terminal distribution signal such as time slot carries out network pipe
Reason.Each terminal is active down-transmitting data in the time slot of distribution.
Seeing Fig. 3, embodiments provide a kind of data transmission method being combined with TDMA based on poll, this relates to
Centroid under TDMA mode of operation and terminal, comprise the following specific steps that:
Centroid is that at least one terminal distributes time slot；
Terminal sends data signal in the time slot of distribution；
If Centroid determinating receiving data Signal Fail, then Centroid instruction terminal retransmits described data signal；
Centroid extracts after data are reintegrated after receiving described data signal and exports.
In the present embodiment, Centroid is that terminal distributes time slot, and the data of terminal send and the data receiver of Centroid
Can carry out in same time slot, it is ensured that the synchronization of data transmission and reliability；When Centroid determinating receiving data signal
During failure, instruction terminal resends data signal, it is ensured that complete data transmission, hence it is evident that reduce the loss of packet；
After data are extracted and integrated, the data of formation can export aobvious control terminal, improves the visuality of data.
Further, Centroid is that at least one terminal distribution time slot includes:
Centroid transmission time slot distribution command signal；
Terminal determines the time slot of distribution after receiving time slot distribution command signal.
In the present embodiment, Centroid and terminal are operated in predetermined Data Transport Protocol, in advance transmission time slot distribution
Command signal is the synchronization that terminal distribution time slot can ensure that network time.
Further, terminal sends data signal and Centroid receives data signal in the time slot of same distribution.
Further, Centroid determinating receiving data Signal Fail includes:
Centroid receives data signal mistake or loses data signal.
In the present embodiment, terminal and Centroid are in the time slot of same distribution, it is ensured that send and receive data signal
Synchronize letter, when, after loss of data, being also relatively easy to search and lose the time slot of data and corresponding terminal；The number that Centroid receives
All can cause the carrying out of poll working method according to signal error or loss data signal, thus be further ensured that partial data
Under pass.
Further, Centroid instruction terminal retransmission data signal includes:
In unappropriated time slot, Centroid launches poll command signal；
Terminal resends data signal after receiving poll command signal.
In the present embodiment, in unappropriated time slot, Centroid indicates terminal after losing data by the way of poll
Resend data, with strong points, and there is higher efficiency, and it being not take up the time slot of distribution, network delay is little.
Compared with prior art, the invention provides a kind of data transmission method being combined based on poll with TDMA, according to
The Data Transport Protocol of agreement, if Centroid is not properly received under corresponding terminal, at the time slot of distribution, the data signal passed,
Automatically polling mode is used to obtain the data lost at unappropriated time slot, it is desirable to this terminal retransmits unreceived packet, adopts
The data transmission mechanism combined with TDMA with poll, forms complete data down transmission and reception；Can be used for a kind of Centroid
The data of multiple terminals distributed and obtains, it is ensured that the reliability of data transmission and real-time, filling certain certain number and pass field
Interior blank.
See Fig. 4, in an additional preferred embodiment, it is provided that a kind of data transmission dress being combined based on poll with TDMA
Putting, this device relates to the Centroid under TDMA mode of operation and terminal, including:
Time slot distribution module, is that at least one terminal distributes time slot for Centroid；
Data transmit-receive module, sends data signal for terminal in the time slot of distribution；
Poll instruction module, if Centroid determinating receiving data Signal Fail, then Centroid instruction terminal retransmits institute
State data signal；
Integrating output module, Centroid extracts after data are reintegrated after receiving data signal and exports.
In the present embodiment, centered by time slot distribution module, node and terminal distribute same time slot, it is ensured that terminal and in
Heart node is operated in same time slot, improves the synchronicity of data transmission；Poll instruction module instructs by sending poll, permissible
Terminal is indicated to resend data signal after Centroid receives data signal failure, it is ensured that complete data down transmission and connecing
Receive；Integrate output module to carry out data integrating after Centroid receives data signal extracting, thus output data to show
Control terminal, improves conformability and the visuality of data.
Further, time slot distribution module specifically for:
Centroid transmission time slot distribution command signal；
Terminal determines the time slot of distribution after receiving time slot distribution command signal.
In the present embodiment, Centroid and terminal are set in same working time slot by time slot distribution module, it is ensured that
The synchronization of network time.
Further, terminal sends data signal and Centroid receives data signal in the time slot of same distribution.
Further, the Centroid determinating receiving data Signal Fail of poll instruction module specifically includes:
Centroid receives data signal mistake or loses data signal.
In the present embodiment, terminal and Centroid are in the time slot of same distribution, it is ensured that send and receive data signal
Synchronize letter, when, after loss of data, being also relatively easy to search and lose the time slot of data and corresponding terminal；The number that Centroid receives
All can cause the carrying out of poll working method according to signal error or loss data signal, thus be further ensured that partial data
Under pass.
Further, poll instruction module is additionally operable to:
In unappropriated time slot, Centroid launches poll command signal；
The data transmit-receive module of terminal resends data signal after receiving poll command signal.
In the present embodiment, poll instruction module is in unappropriated time slot, and Centroid passes through poll after losing data
Mode indicates terminal to resend data, with strong points, and has higher efficiency, is not take up the time slot of distribution, network delay
Little.
Compared with prior art, the invention provides a kind of data transmission device being combined based on poll, time slot with TDMA
Distribute node and terminal centered by module is passed through and set same time slot, it is ensured that both have synchronicity at work, it is ensured that data
The real-time of transmission and reliability；If the Centroid of poll instruction module is not properly received corresponding terminal at the time slot of distribution
The data signal passed down, uses polling mode to obtain the data lost at unappropriated time slot, it is desirable to this terminal is retransmitted not automatically
The packet received, the data transmission mechanism using poll to combine with TDMA, form complete data down transmission and reception；Integrate
The data that Centroid receives can be extracted and integrate by output module, the data meeting poll command request is exported extremely
Aobvious control end, improves reliability and the visuality of data, and can be used for a Centroid data of multiple terminals are distributed and obtained
Take, it is ensured that the reliability of data transmission and real-time, fill the blank in certain certain number biography field.
Although above in association with preferred embodiment, invention has been described, but it should be appreciated by those skilled in the art,
Method and system of the present invention is not limited to the embodiment described in detailed description of the invention, is wanting without departing substantially from by appended right
In the case of seeking the spirit and scope of the invention that book limits, can to the present invention various modification can be adapted, increase and replace.
Claims (10)
1. the data transmission method being combined with TDMA based on poll, described method relates to the centromere under TDMA mode of operation
Point and terminal, it is characterised in that described method comprises the following specific steps that:
Described Centroid is that at least one described terminal distributes time slot；
Described terminal sends data signal in the described time slot of distribution；
If described Centroid judges to receive the failure of described data signal, it is described that the most described Centroid indicates described terminal to retransmit
Data signal；
Described Centroid extracts after data are reintegrated after receiving described data signal and exports.
Data transmission method the most according to claim 1, it is characterised in that described Centroid is at least one described end
Machine distribution time slot includes:
Described Centroid transmission time slot distribution command signal；
Described terminal determines the time slot of distribution after receiving described time slot distribution command signal.
Data transmission method the most according to claim 1, it is characterised in that described terminal sends described data signal and institute
State Centroid and receive described data signal in the described time slot of same distribution.
Data transmission method the most according to claim 1, it is characterised in that described Centroid judges to receive described data
Signal Fail includes:
Described Centroid receives described data signal mistake or loses described data signal.
5. according to the data transmission method described in claim 1 or 4 any one, it is characterised in that described Centroid indicates
Described terminal is retransmitted described data signal and is included:
In unappropriated time slot, described Centroid launches poll command signal；
Described terminal resends described data signal after receiving described poll command signal.
6. the data transmission device being combined with TDMA based on poll, described device relates to the centromere under TDMA mode of operation
Point and terminal, it is characterised in that described device includes:
Time slot distribution module, is that at least one described terminal distributes time slot for described Centroid；
Data transmit-receive module, sends data signal for described terminal in the described time slot of distribution；
Poll instruction module, if described Centroid judges to receive the failure of described data signal, the most described Centroid indicates institute
State terminal and retransmit described data signal；
Integrating output module, described Centroid extracts after data are reintegrated after receiving described data signal and exports.
Data transmission device the most according to claim 6, it is characterised in that time slot distribution module specifically for:
Described Centroid transmission time slot distribution command signal；
Described terminal determines the time slot of distribution after receiving described time slot distribution command signal.
Data transmission device the most according to claim 6, it is characterised in that described terminal sends described data signal and institute
State Centroid and receive described data signal in the described time slot of same distribution.
Data transmission device the most according to claim 6, it is characterised in that the Centroid of described poll instruction module is sentenced
Surely receive data signal unsuccessfully to specifically include:
Described Centroid receives described data signal mistake or loses described data signal.
10. according to the data transmission device described in claim 6 or 9 any one, it is characterised in that described poll instruction module
It is additionally operable to:
In unappropriated time slot, described Centroid launches poll command signal；
The data transmit-receive module of described terminal resends described data signal after receiving described poll command signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610506400.9A CN106209551A (en) | 2016-06-29 | 2016-06-29 | A kind of data transmission method being combined with TDMA based on poll and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610506400.9A CN106209551A (en) | 2016-06-29 | 2016-06-29 | A kind of data transmission method being combined with TDMA based on poll and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107547305A (en) * | 2017-07-19 | 2018-01-05 | 上海因士环保科技有限公司 | A kind of network communicating system and method |
| CN111385744A (en) * | 2018-12-27 | 2020-07-07 | 杭州潇楠科技有限公司 | Dynamic channel access method based on polling |
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| CN1136252A (en) * | 1994-12-26 | 1996-11-20 | 日本电气株式会社 | Satellite Communications system carrying out reservation of necessary time slots by prediction of reply data in remote stations |
| US20040264428A1 (en) * | 2003-06-27 | 2004-12-30 | Samsung Electronics Co., Ltd. | Method and system for wireless local area network (LAN) communication using virtual time division multiple access (TDMA) |
| CN103457893A (en) * | 2012-05-29 | 2013-12-18 | 中国科学院沈阳自动化研究所 | Industrial wireless network frequency-domain polling method based on OFDM technology |
| CN103684711A (en) * | 2012-09-11 | 2014-03-26 | 中国科学院沈阳自动化研究所 | Channel model based factory automation wireless network ARQ retransmitting method |
| CN104080196A (en) * | 2013-03-28 | 2014-10-01 | 华东师范大学 | Ultra-short wave remote data transmission system of hybrid topology network and transmission method thereof |
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2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1136252A (en) * | 1994-12-26 | 1996-11-20 | 日本电气株式会社 | Satellite Communications system carrying out reservation of necessary time slots by prediction of reply data in remote stations |
| US20040264428A1 (en) * | 2003-06-27 | 2004-12-30 | Samsung Electronics Co., Ltd. | Method and system for wireless local area network (LAN) communication using virtual time division multiple access (TDMA) |
| CN103457893A (en) * | 2012-05-29 | 2013-12-18 | 中国科学院沈阳自动化研究所 | Industrial wireless network frequency-domain polling method based on OFDM technology |
| CN103684711A (en) * | 2012-09-11 | 2014-03-26 | 中国科学院沈阳自动化研究所 | Channel model based factory automation wireless network ARQ retransmitting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107547305A (en) * | 2017-07-19 | 2018-01-05 | 上海因士环保科技有限公司 | A kind of network communicating system and method |
| CN111385744A (en) * | 2018-12-27 | 2020-07-07 | 杭州潇楠科技有限公司 | Dynamic channel access method based on polling |
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