CN105337697A - Electric power wireless communication method, device and system for distribution network automation - Google Patents
Electric power wireless communication method, device and system for distribution network automation Download PDFInfo
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- CN105337697A CN105337697A CN201510658516.XA CN201510658516A CN105337697A CN 105337697 A CN105337697 A CN 105337697A CN 201510658516 A CN201510658516 A CN 201510658516A CN 105337697 A CN105337697 A CN 105337697A
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- 230000006854 communication Effects 0.000 title claims abstract description 66
- 238000004891 communication Methods 0.000 title claims abstract description 65
- 230000001174 ascending effect Effects 0.000 claims description 67
- 238000012549 training Methods 0.000 claims description 8
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
- H04L1/0013—Rate matching, e.g. puncturing or repetition of code symbols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
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Abstract
The invention discloses an electric power wireless communication method applicable for distribution network automation. A base station can select different channel coding modes, rate matching modes and modulation modes according to error rate conditions of current channels, and send scheduling requests including the channel coding modes, the rate matching modes and the modulation modes in a down time slot. A terminal processes data requested by the base station by use of the channel coding modes, rate matching modes and modulation modes selected by the base station according to the scheduling requests, and send the data to the base station in an upper time slot. In this way, channel coding modes, rate matching modes and modulation modes, which are best for current channel error rate conditions, can be adopted, so use of the channels can be maximized and transmission efficiency of the data is increased.
Description
Technical field
The present invention relates to wireless communication field, be specially a kind of the electric power wireless communications method, the Apparatus and system that are applicable to distribution automation.
Background technology
Along with Radio Spectrum Resource day is becoming tight, in the public frequency band without the need to authorizing, there are other wireless signals a large amount of, if electric power radio communication also uses these frequency ranges to carry out radio communication, communication quality will inevitably be subject to larger impact.According to the division of the National Radio committee, the special frequency range of electric power radio communication comprises 40 frequencies discrete in 223 ~ 235MHz, and each frequency has 25KHz bandwidth.Utilize these frequency ranges to carry out electric power radio communication, the interference of other public wireless signals of telecommunication a large amount of can be avoided, ensure the reliability of electric power radio communication.
In prior art, comparatively ripe data radio station technology is had in 230MHz frequency range, but its modulation system adopted is single, mostly be FSK (Frequency-ShiftKeying, frequency shift keying), the low-order-modulated mode such as GFSK (GaussFrequency-ShiftKeying, Gaussian Frequency Shift Keying), frequency spectrum service efficiency is low, message transmission rate is fixed, and causes the efficiency of transmission of data lower.
Summary of the invention
In view of this, the invention provides a kind of electric power wireless communications method being applicable to distribution automation, overcome prior art intermediate frequency spectrum service efficiency low, the problem that message transmission rate is fixing, reach the object improving data transmission efficiency.
For achieving the above object, following technical scheme is provided:
Be applicable to an electric power wireless communications method for distribution automation, the frame structure that each frame comprises three continuous print descending time slots and seven continuous print ascending time slots is set in advance in Data Transport Protocol; Described three continuous print descending time slots are distributed to base station and are used, and described seven continuous print ascending time slots are distributed to terminal and used; Wherein, described method comprises:
Channel coding method, rate-matched mode and the modulation system corresponding with the error rate situation of present channel are selected according to the error rate situation of present channel in base station, and send the dispatch request comprising described channel coding method, rate-matched mode and modulation system to terminal at described descending time slot;
The data that base station receiving terminal sends at ascending time slot; Described data are the terminal data of asking in described dispatch request; The processing procedure of described data is: the data of base station requests are carried out chnnel coding, rate-matched and modulation, makes the data fit slot length after process.
Preferably, described seven continuous print ascending time slots are distributed to terminal and are used, and comprising:
When the terminal quantity in cordless communication network is seven, each terminal distribution ascending time slot.
Preferably, described seven continuous print ascending time slots are distributed to terminal and are used, and comprising:
When the terminal quantity in cordless communication network is less than seven, is first each terminal distribution ascending time slot, then unappropriated ascending time slot in a frame frame structure is randomly assigned to terminal.
Preferably, described seven continuous print ascending time slots are distributed to terminal and are used, and comprising:
When the terminal quantity in cordless communication network is greater than seven, adopt the mode of poll that ascending time slot is distributed to each terminal.
Preferably, described slot length comprises:
Data length and time span.
Preferably, described data length is 200 symbols, wherein comprises the information data symbols of data length 83 symbols successively, the training sequence symbols of data length 32 symbols, the information data symbols of data length 83 symbols, the slot time symbol of data length 2 symbols.
Preferably, described time span is 10ms, wherein comprises the information data symbols of time span 4.15ms successively, the training sequence symbols of time span 1.6ms, the information data symbols of time span 4.15ms, the slot time symbol of time span 0.1ms.
Preferably, described channel coding method, comprising:
Described channel coding method adopts the tail bit convolution of stinging of 1/2 or 1/3 speed to encode.
Preferably, described modulation system, comprising:
Described modulation system adopts binary phase shift keying BPSK, Quadrature Phase Shift Keying QPSK or quadrature amplitude modulation 16QAM.
Preferably, before the data of described base station requests are processed, also comprise, generate CRC check code.
A kind of base station, arranges the frame structure that each frame comprises three continuous print descending time slots and seven continuous print ascending time slots in advance in Data Transport Protocol; Described three continuous print descending time slots are distributed to base station and are used, and described seven continuous print ascending time slots are distributed to terminal and used; Wherein, described base station comprises:
Dispatch request transmitting element, select channel coding method, rate-matched mode and the modulation system corresponding with the error rate situation of present channel for the error rate situation according to present channel, and send the dispatch request comprising described channel coding method, rate-matched mode and modulation system at described descending time slot to terminal;
Terminal data receiving element, for the data that receiving terminal sends at ascending time slot; Described data are the terminal data of asking in described dispatch request; The processing procedure of described data is: the data of base station requests are carried out chnnel coding, rate-matched and modulation, makes the data fit slot length after process.
Be applicable to an electric power wireless communications method for distribution automation, the frame structure that each frame comprises three continuous print descending time slots and seven continuous print ascending time slots is set in advance in Data Transport Protocol; Described three continuous print descending time slots are distributed to base station and are used, and described seven continuous print ascending time slots are distributed to terminal and used; Wherein, described method comprises:
Terminal receives the dispatch request that base station sends at described descending time slot, and described dispatch request comprises base station and selects different channel coding methods, rate-matched mode and modulation system according to the error rate situation of present channel;
Terminal adopts channel coding method, rate-matched mode and the data of modulation system to base station requests selected by base station to process according to described dispatch request, and at the ascending time slot that terminal is corresponding, data after described process is sent to base station;
The described data to base station requests process, and comprising: the data of base station requests are carried out chnnel coding, rate-matched and modulation, make the data fit slot length after process.
A kind of terminal, arranges the frame structure that each frame comprises three continuous print descending time slots and seven continuous print ascending time slots in advance in Data Transport Protocol; Described three continuous print descending time slots are distributed to base station and are used, and described seven continuous print ascending time slots are distributed to terminal and used; Wherein, described terminal comprises:
Dispatch request receiving element, for receiving the dispatch request that base station sends at described descending time slot, described dispatch request comprises base station and selects different channel coding methods, rate-matched mode and modulation system according to the error rate situation of present channel;
Terminal data transmitting element, for adopting channel coding method, rate-matched mode and the data of modulation system to base station requests selected by base station to process according to described dispatch request, and at the ascending time slot that terminal is corresponding, data after described process are sent to base station;
The described data to base station requests process, and comprising: the data of base station requests are carried out chnnel coding, rate-matched and modulation, make the data fit slot length after process.
Be applicable to an electric power wireless communication system for distribution automation, comprise:
Base station as claimed in claim 11 and terminal as claimed in claim 13.
Present embodiments provide a kind of electric power wireless communications method being applicable to distribution automation, different channel coding methods, rate-matched mode and modulation system can be selected according to the error rate situation of present channel in base station, and send the dispatch request comprising described channel coding method, rate-matched mode and modulation system to terminal at descending time slot; Terminal adopts channel coding method, rate-matched mode and the data of modulation system to base station requests selected by base station to process according to described dispatch request, and at ascending time slot, described data is sent to base station; The channel coding method of the most applicable present channel error rate situation, rate-matched mode and modulation system can be adopted by the method, maximizedly make use of channel, improve the efficiency of transmission of data.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is a kind of schematic flow sheet being applicable to the electric power wireless communications method of distribution automation provided by the invention;
Fig. 2 is a kind of frame structure schematic diagram being applicable to the electric power wireless communications method of distribution automation provided by the invention;
Fig. 3 is a kind of structure of time slot schematic diagram being applicable to the electric power wireless communications method of distribution automation provided by the invention;
Fig. 4 be provided by the invention a kind of be applicable to the electric power wireless communications method of distribution automation coding, rate-matched and modulation concrete implementing procedure figure;
Fig. 5 is a kind of schematic network structure being applicable to the electric power wireless communications method of distribution automation provided by the invention;
Fig. 6 is a kind of another schematic flow sheet being applicable to the electric power wireless communications method of distribution automation provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of electric power wireless communications method being applicable to distribution automation, overcome prior art intermediate frequency spectrum service efficiency low, the problem that message transmission rate is fixing, reach the object improving data transmission efficiency.
As shown in Figure 1, 2, embodiments provide a kind of electric power wireless communications method being applicable to distribution automation, the frame structure that each frame comprises three continuous print descending time slots and seven continuous print ascending time slots is set in advance in Data Transport Protocol; Described three continuous print descending time slots are distributed to base station and are used, and described seven continuous print ascending time slots are distributed to terminal and used; Described method is:
S101. channel coding method, rate-matched mode and the modulation system corresponding with the error rate situation of present channel are selected according to the error rate situation of present channel in base station, and send the dispatch request comprising described channel coding method, rate-matched mode and modulation system to terminal at described descending time slot;
S102. the data that send at ascending time slot of base station receiving terminal.
Described data are the terminal data of asking in described dispatch request; The processing procedure of described data is: the data of base station requests are carried out chnnel coding, rate-matched and modulation, makes the data fit slot length after process.
Present embodiments provide a kind of electric power wireless communications method being applicable to distribution automation, different channel coding methods, rate-matched mode and modulation system can be selected according to the error rate situation of present channel in base station, and send the dispatch request comprising described channel coding method, rate-matched mode and modulation system to terminal at descending time slot; Terminal adopts channel coding method, rate-matched mode and the data of modulation system to base station requests selected by base station to process according to described dispatch request, and at ascending time slot, described data is sent to base station; The most applicable present channel can be adopted without the channel coding method of code check situation, rate-matched mode and modulation system by the method, maximizedly make use of channel, improve the efficiency of transmission of data.
In above-mentioned communication process, channel coding method, rate-matched mode and the modulation system corresponding with the error rate situation of present channel are selected according to the error rate situation of present channel in described base station, be specially, pre-set a bit error rate threshold, such as 10-5, when the error rate receiving data is less than this threshold value, keep this communication mode (comprising channel coding method, rate-matched mode and modulation system, lower same) constant; When the error rate of reception data is much smaller than this threshold value, also namely current channel condition better (disturbing little), then adopts more efficient communication mode, to improve data transmission efficiency; When the error rate receiving data is greater than this threshold value (also error in data quantity is greater than the threshold value of setting), then adopt the communication mode of more poor efficiency, to ensure the correctness of transfer of data.
The selection of communication mode is a dynamic process, As time goes on may change, and changes by channel condition in this time period (mainly Signal transmissions be subject to interference size) change.Such as, if find that in base station sometime the error rate exceedes threshold value, just adjusts communication mode, the communication mode that employing Deta bearer length is less, more not all right use again less, until meet bit error rate requirement.In like manner, if find that in base station sometime the error rate is very little, just adopts the communication mode that Deta bearer length is larger, and can according to error rate situation always to large adjustment, until the error rate exceedes threshold value.
As shown in Figure 3, in electric power wireless communications method disclosed in above-described embodiment, described slot length comprises:
Data length and time span.
Wherein, described data length is 200 symbols, wherein comprises the information data symbols of data length 83 symbols successively, the training sequence symbols of data length 32 symbols, the information data symbols of data length 83 symbols, the slot time symbol of data length 2 symbols.
Described time span is 10ms, wherein comprises the information data symbols wherein comprising time span 4.15ms successively successively, the training sequence symbols of time span 1.6ms, the information data symbols of time span 4.15ms, the slot time symbol of time span 0.1ms.
Visible, each symbol duration is 10ms/200=0.05ms.
As shown in the above, described time slot comprises three class symbols: information data symbols, training sequence symbols, slot time symbol.
Wherein, information data symbols is for carrying the valid data needing to carry out transmitting; Training sequence symbols is for estimating and revising the frequency departure between base station and terminal; Slot time symbol disturbs between the time slot between two time slots for preventing.
Optionally, in another embodiment of the invention, described channel coding method, comprising:
Described channel coding method adopts the tail bit convolution of stinging of 1/2 or 1/3 speed to encode.
The convolution coder adopting above-mentioned coded system to use comprises input shift register, modular two addition device, Output Shift Register.
Described convolution coder is specially (2,1,8), (3,1,8) convolution coder, respectively corresponding 1/2,1/3 rate convolutional coding.
Its principle is: when inputting in shift register that to input length be the character of 8bit, this character is divided into 2 (3) groups by modular two addition device, the character often organized is a part of character selected from 8bit character, then exports the character that length is 2bit (3bit) at Output Shift Register place.
Wherein, the character that the different modular two addition device organized takes out diverse location from input shift register carries out mould two and adds, and by result of calculation stored in corresponding Output Shift Register.
Employing chnnel coding can improve the antijamming capability in data transmission procedure, improves the accuracy of transfer of data.
Optionally, described modulation system, comprising:
Described modulation system adopts binary phase shift keying BPSK, Quadrature Phase Shift Keying QPSK or quadrature amplitude modulation 16QAM.
Above-mentioned coded system is high-order coded system, under same bandwidth, FSK (the Frequency-ShiftKeying adopted in prior art, frequency shift keying), GFSK (GaussFrequency-ShiftKeying, Gaussian Frequency Shift Keying) etc. low-order-modulated mode, a symbol can only represent the data of a unit, frequency spectrum service efficiency is low, and adopt high-order modulating can carry the data of 2 or 4 units with a symbol, data volume is improved, and then makes frequency spectrum service efficiency improve.
Optionally, described rate-matched mode, comprising:
Described rate-matched mode adjusts according to the error rate situation of present channel.
Described rate-matched, also known as punching, its objective is the requirement in order to make data meet slot length, after only having the requirement meeting slot length, just can carry out the transmission work of data.In conjunction with different Deta bearer length, channel coding method and modulation system, need punching data being carried out to varying number.Its corresponding relation of punching quantity is as shown in table 1.
Table 1 different bearer data length corresponding data coding and modulation system
In Table 1, the 3rd row " Deta bearer length ", numerical value is larger, shows that the data of transmission in a time slot are more.If need efficient communication mode, then large with numerical value; If need correct transmission, then use numerical value little.
Concrete, the process of described rate-matched is: for 1/7 punching, shown in composition graphs 4, receive continuous seven data from prime convolutional encoding flow process 110, only exports the first six data to rear class modulation flow process 130, abandons the 7th data.That is, continuous six data are inputted from prime convolutional encoding flow process 110, in rate-matched flow process 120, former state outputs to modulation flow process 130 below, and ensuing 7th data abandon the modulation flow process 130 do not sent into below, eight to ten three data former state exports, and the 14 data abandon and do not export, with this reprocessing, until complete the process of all data in a time slot.Base station can recover the data abandoned by identical hole knockout, make data integrity.
Wherein, 0/1 expression is not punched (not abandoning), and the data received all are outputted to rear class.
Described rate-matched mode adjusts according to the error rate situation of present channel, is specially:
The rate-matched mode of current employing is 1/4 punching, and base station finds that in data transmission procedure the error rate is higher, and namely adjusting rate-matched mode is 1/5 punching, proceeds transfer of data, by that analogy.
Optionally, in another embodiment of the invention, before the data of described base station requests are processed, also comprise:
Generate CRC check code.
Optionally, the mode of 12bit verification is adopted to generate described CRC check code.
Described CRC check code is used for the correctness of checking data.
Present embodiments provide a kind of electric power wireless communications method being applicable to distribution automation, different channel coding methods, rate-matched mode and modulation system can be selected according to the error rate situation of present channel in base station, and send the dispatch request comprising described channel coding method, rate-matched mode and modulation system to terminal at descending time slot; Terminal adopts channel coding method, rate-matched mode and the data of modulation system to base station requests selected by base station to process according to described dispatch request, and at ascending time slot, described data is sent to base station; The most applicable present channel can be adopted without the channel coding method of code check situation, rate-matched mode and modulation system by the method, maximizedly make use of channel, improve the efficiency of transmission of data.
Optionally, in another embodiment of the invention, described seven continuous print ascending time slots are distributed to terminal and are used, and comprising:
As shown in Figure 5, when the terminal quantity in cordless communication network is seven, each terminal distribution ascending time slot;
When the terminal quantity in cordless communication network is less than seven, is first each terminal distribution ascending time slot, then unappropriated ascending time slot in a frame frame structure is randomly assigned to terminal;
When the terminal quantity in cordless communication network is greater than seven, adopt the mode of poll that ascending time slot is distributed to each terminal.
Concrete, the distribution of time slot by base stations being in charge, base station at three descending time slots to terminal sending time slots assignment information, under normal circumstances, a corresponding ascending time slot of terminal.Namely in foregoing when the terminal quantity in cordless communication network is seven, each terminal distribution ascending time slot;
If there is unnecessary free timeslot, that is when the terminal quantity in cordless communication network is less than seven, then there are two kinds of processing modes base station to additional vacant ascending time slot: 1, ask the data volume of certain terminal larger, need multiple time slot just can complete transmission, now unnecessary free timeslots can be distributed to this terminal and use (prerequisite does not affect the time slot allocated in advance to other-end); 2, in free timeslots, what does not do.No matter adopt any of above-mentioned two kinds of methods, be all that time slot allocation information is sent to each terminal by base station in base station down three time slots, terminal can be allowed to know has unnecessary free timeslots to distribute to oneself.Still the corresponding time slot of a terminal of following the prescribed order.
Present embodiments provide a kind of electric power wireless communications method being applicable to distribution automation, different channel coding methods, rate-matched mode and modulation system can be selected according to the error rate situation of present channel in base station, and send the dispatch request comprising described channel coding method, rate-matched mode and modulation system to terminal at descending time slot; Terminal adopts channel coding method, rate-matched mode and the data of modulation system to base station requests selected by base station to process according to described dispatch request, and at ascending time slot, described data is sent to base station; The most applicable present channel can be adopted without the channel coding method of code check situation, rate-matched mode and modulation system by the method, maximizedly make use of channel, improve the efficiency of transmission of data.Also by adjusting the distribution of ascending time slot, meeting the group-net communication of electric power wireless base station/terminal within the specific limits, realizing light-weighted demand, reduce the requirement to electric power terminal disposal ability.
As shown in Figure 6, The embodiment provides a kind of electric power wireless communications method being applicable to distribution automation, the frame structure that each frame comprises three continuous print descending time slots and seven continuous print ascending time slots is set in advance in Data Transport Protocol; Described three continuous print descending time slots are distributed to base station and are used, and described seven continuous print ascending time slots are distributed to terminal and used; Described method is:
S201. terminal receives the dispatch request that base station sends at described descending time slot;
Described dispatch request comprises base station and selects different channel coding methods, rate-matched mode and modulation system according to the error rate situation of present channel;
S202. terminal adopts channel coding method, rate-matched mode and the data of modulation system to base station requests selected by base station to process according to described dispatch request, and at the ascending time slot that terminal is corresponding, data after described process is sent to base station.
The described data to base station requests process, and comprising: the data of base station requests are carried out chnnel coding, rate-matched and modulation, make the data fit slot length after process.
Present embodiments provide a kind of electric power wireless communications method being applicable to distribution automation, different channel coding methods, rate-matched mode and modulation system can be selected according to the error rate situation of present channel in base station, and send the dispatch request comprising described channel coding method, rate-matched mode and modulation system to terminal at descending time slot; Terminal adopts channel coding method, rate-matched mode and the data of modulation system to base station requests selected by base station to process according to described dispatch request, and at ascending time slot, described data is sent to base station; The channel coding method of the most applicable present channel wooden horse rate situation, rate-matched mode and modulation system can be adopted by the method, maximizedly make use of channel, improve the efficiency of transmission of data.
The embodiment provides a kind of electric power wireless communication system being applicable to distribution automation, described system comprises:
A kind of base station, arranges the frame structure that each frame comprises three continuous print descending time slots and seven continuous print ascending time slots in advance in Data Transport Protocol; Described three continuous print descending time slots are distributed to base station and are used, and described seven continuous print ascending time slots are distributed to terminal and used; Wherein, described base station comprises:
Dispatch request transmitting element, select channel coding method, rate-matched mode and the modulation system corresponding with the error rate situation of present channel for the error rate situation according to present channel, and send the dispatch request comprising described channel coding method, rate-matched mode and modulation system at described descending time slot to terminal;
A kind of terminal, is characterized in that, arrange the frame structure that each frame comprises three continuous print descending time slots and seven continuous print ascending time slots in advance in Data Transport Protocol; Described three continuous print descending time slots are distributed to base station and are used, and described seven continuous print ascending time slots are distributed to terminal and used; Wherein, described terminal comprises:
Dispatch request receiving element, for receiving the dispatch request that base station sends at described descending time slot, described dispatch request comprises base station and selects different channel coding methods, rate-matched mode and modulation system according to the error rate situation of present channel;
Terminal data transmitting element, for adopting channel coding method, rate-matched mode and the data of modulation system to base station requests selected by base station to process according to described dispatch request, and at the ascending time slot that terminal is corresponding, data after described process are sent to base station;
The described data to base station requests process, and comprising: the data of base station requests are carried out chnnel coding, rate-matched and modulation, make the data fit slot length after process.
Data Transport Protocol in native system adopts time division multiplexing (TDM, TimeDivisionMultiplexing) frame structure, and each frame of described frame structure comprises the frame structure of three continuous print descending time slots and seven continuous print ascending time slots; Described three continuous print descending time slots are distributed to base station and are used, and described seven continuous print ascending time slots are distributed to terminal and used; Base station/terminal in same wireless network sends data and controls by synchronised clock, and base station/terminal carries out data transmission in the time slot distributed separately, only can carry out intercepting or data receiver in overstepping one's bounds timing gap.
Present embodiments provide a kind of electric power wireless communication system being applicable to distribution automation, comprise base station and terminal, different channel coding methods, rate-matched mode and modulation system can be selected according to the error rate situation of present channel in described base station, and send the dispatch request comprising described channel coding method, rate-matched mode and modulation system to terminal at descending time slot; Terminal adopts channel coding method, rate-matched mode and the data of modulation system to base station requests selected by base station to process according to described dispatch request, and at ascending time slot, described data is sent to base station; The channel coding method of the most applicable present channel wooden horse rate situation, rate-matched mode and modulation system can be adopted by the method, maximizedly make use of channel, improve the efficiency of transmission of data.Also by adjusting the distribution of ascending time slot, meeting the group-net communication of electric power wireless base station/terminal within the specific limits, realizing light-weighted demand, reduce the requirement to electric power terminal disposal ability.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The above is only the embodiment of the application; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection range of the application.
Claims (14)
1. be applicable to an electric power wireless communications method for distribution automation, it is characterized in that, the frame structure that each frame comprises three continuous print descending time slots and seven continuous print ascending time slots is set in advance in Data Transport Protocol; Described three continuous print descending time slots are distributed to base station and are used, and described seven continuous print ascending time slots are distributed to terminal and used; Wherein, described method comprises:
Channel coding method, rate-matched mode and the modulation system corresponding with the error rate situation of present channel are selected according to the error rate situation of present channel in base station, and send the dispatch request comprising described channel coding method, rate-matched mode and modulation system to terminal at described descending time slot;
The data that base station receiving terminal sends at ascending time slot; Described data are the terminal data of asking in described dispatch request; The processing procedure of described data is: the data of base station requests are carried out chnnel coding, rate-matched and modulation, makes the data fit slot length after process.
2. electric power wireless communications method according to claim 1, is characterized in that, described seven continuous print ascending time slots are distributed to terminal and used, and comprising:
When the terminal quantity in cordless communication network is seven, each terminal distribution ascending time slot.
3. electric power wireless communications method according to claim 1, is characterized in that, described seven continuous print ascending time slots are distributed to terminal and used, and comprising:
When the terminal quantity in cordless communication network is less than seven, is first each terminal distribution ascending time slot, then unappropriated ascending time slot in a frame frame structure is randomly assigned to terminal.
4. electric power wireless communications method according to claim 1, is characterized in that, described seven continuous print ascending time slots are distributed to terminal and used, and comprising:
When the terminal quantity in cordless communication network is greater than seven, adopt the mode of poll that ascending time slot is distributed to each terminal.
5. electric power wireless communications method according to claim 1, is characterized in that, described slot length comprises:
Data length and time span.
6. electric power wireless communications method according to claim 5, it is characterized in that, described data length is 200 symbols, wherein comprise the information data symbols of data length 83 symbols successively, the training sequence symbols of data length 32 symbols, the information data symbols of data length 83 symbols, the slot time symbol of data length 2 symbols.
7. electric power wireless communications method according to claim 5, it is characterized in that, described time span is 10ms, wherein comprise the information data symbols of time span 4.15ms successively, the training sequence symbols of time span 1.6ms, the information data symbols of time span 4.15ms, the slot time symbol of time span 0.1ms.
8. electric power wireless communications method according to claim 1, is characterized in that, described channel coding method, comprising:
Described channel coding method adopts the tail bit convolution of stinging of 1/2 or 1/3 speed to encode.
9. electric power wireless communications method according to claim 1, is characterized in that, described modulation system, comprising:
Described modulation system adopts binary phase shift keying BPSK, Quadrature Phase Shift Keying QPSK or quadrature amplitude modulation 16QAM.
10. electric power wireless communications method according to claim 1, is characterized in that, before processing the data of described base station requests, also comprises, and generates CRC check code.
11. 1 kinds of base stations, is characterized in that, arrange the frame structure that each frame comprises three continuous print descending time slots and seven continuous print ascending time slots in advance in Data Transport Protocol; Described three continuous print descending time slots are distributed to base station and are used, and described seven continuous print ascending time slots are distributed to terminal and used; Wherein, described base station comprises:
Dispatch request transmitting element, select channel coding method, rate-matched mode and the modulation system corresponding with the error rate situation of present channel for the error rate situation according to present channel, and send the dispatch request comprising described channel coding method, rate-matched mode and modulation system at described descending time slot to terminal;
Terminal data receiving element, for the data that receiving terminal sends at ascending time slot; Described data are the terminal data of asking in described dispatch request; The processing procedure of described data is: the data of base station requests are carried out chnnel coding, rate-matched and modulation, makes the data fit slot length after process.
12. 1 kinds of electric power wireless communications methods being applicable to distribution automation, is characterized in that, arrange the frame structure that each frame comprises three continuous print descending time slots and seven continuous print ascending time slots in advance in Data Transport Protocol; Described three continuous print descending time slots are distributed to base station and are used, and described seven continuous print ascending time slots are distributed to terminal and used; Wherein, described method comprises:
Terminal receives the dispatch request that base station sends at described descending time slot, and described dispatch request comprises base station and selects different channel coding methods, rate-matched mode and modulation system according to the error rate situation of present channel;
Terminal adopts channel coding method, rate-matched mode and the data of modulation system to base station requests selected by base station to process according to described dispatch request, and at the ascending time slot that terminal is corresponding, data after described process is sent to base station;
The described data to base station requests process, and comprising: the data of base station requests are carried out chnnel coding, rate-matched and modulation, make the data fit slot length after process.
13. 1 kinds of terminals, is characterized in that, arrange the frame structure that each frame comprises three continuous print descending time slots and seven continuous print ascending time slots in advance in Data Transport Protocol; Described three continuous print descending time slots are distributed to base station and are used, and described seven continuous print ascending time slots are distributed to terminal and used; Wherein, described terminal comprises:
Dispatch request receiving element, for receiving the dispatch request that base station sends at described descending time slot, described dispatch request comprises base station and selects different channel coding methods, rate-matched mode and modulation system according to the error rate situation of present channel;
Terminal data transmitting element, for adopting channel coding method, rate-matched mode and the data of modulation system to base station requests selected by base station to process according to described dispatch request, and at the ascending time slot that terminal is corresponding, data after described process are sent to base station;
The described data to base station requests process, and comprising: the data of base station requests are carried out chnnel coding, rate-matched and modulation, make the data fit slot length after process.
14. 1 kinds of electric power wireless communication systems being applicable to distribution automation, is characterized in that, comprising:
Base station as claimed in claim 11 and terminal as claimed in claim 13.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017166973A1 (en) * | 2016-03-29 | 2017-10-05 | 中兴通讯股份有限公司 | Coding scheme configuration method and device |
| WO2018149411A1 (en) * | 2017-02-15 | 2018-08-23 | 中兴通讯股份有限公司 | Data processing method and device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1666447A (en) * | 2002-06-28 | 2005-09-07 | 皇家飞利浦电子股份有限公司 | Adaptive rate matching method |
| CN101047426A (en) * | 2006-04-18 | 2007-10-03 | 华为技术有限公司 | Distribution method of uplink block data channel and data transmitting method |
| CN101047466A (en) * | 2006-03-31 | 2007-10-03 | 中兴通讯股份有限公司 | Method for deciding using code of downlink interval and uplink interval in wimax system |
| CN101087440A (en) * | 2006-06-06 | 2007-12-12 | 大唐移动通信设备有限公司 | A method for data adjustment in mobile communication system |
| CN101141226A (en) * | 2006-09-08 | 2008-03-12 | 华为技术有限公司 | Modulation coding state regulation means, self-adaptive coding modulation method and system |
| CN101388744A (en) * | 2007-09-11 | 2009-03-18 | 中兴通讯股份有限公司 | Adaptive encoding modulation method |
| CN101494515A (en) * | 2008-01-22 | 2009-07-29 | 中兴通讯股份有限公司 | Down self-adapting modulation coding method and base station of OFDM system |
| CN101814935A (en) * | 2009-02-25 | 2010-08-25 | 谢炜 | Self-adaptive modulator in power line communication system |
| CN102377513A (en) * | 2010-08-24 | 2012-03-14 | 中兴通讯股份有限公司 | Adaptive modulation and coding method and device |
| CN102739378A (en) * | 2012-06-06 | 2012-10-17 | 东南大学 | Adaptive virtual hybrid retransmission method applicable to satellite mobile communication system |
| CN104348574A (en) * | 2013-07-25 | 2015-02-11 | 普天信息技术有限公司 | Method and device for adjusting modulation and coding scheme |
-
2015
- 2015-10-12 CN CN201510658516.XA patent/CN105337697B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1666447A (en) * | 2002-06-28 | 2005-09-07 | 皇家飞利浦电子股份有限公司 | Adaptive rate matching method |
| CN101047466A (en) * | 2006-03-31 | 2007-10-03 | 中兴通讯股份有限公司 | Method for deciding using code of downlink interval and uplink interval in wimax system |
| CN101047426A (en) * | 2006-04-18 | 2007-10-03 | 华为技术有限公司 | Distribution method of uplink block data channel and data transmitting method |
| CN101087440A (en) * | 2006-06-06 | 2007-12-12 | 大唐移动通信设备有限公司 | A method for data adjustment in mobile communication system |
| CN101141226A (en) * | 2006-09-08 | 2008-03-12 | 华为技术有限公司 | Modulation coding state regulation means, self-adaptive coding modulation method and system |
| CN101388744A (en) * | 2007-09-11 | 2009-03-18 | 中兴通讯股份有限公司 | Adaptive encoding modulation method |
| CN101494515A (en) * | 2008-01-22 | 2009-07-29 | 中兴通讯股份有限公司 | Down self-adapting modulation coding method and base station of OFDM system |
| CN101814935A (en) * | 2009-02-25 | 2010-08-25 | 谢炜 | Self-adaptive modulator in power line communication system |
| CN102377513A (en) * | 2010-08-24 | 2012-03-14 | 中兴通讯股份有限公司 | Adaptive modulation and coding method and device |
| CN102739378A (en) * | 2012-06-06 | 2012-10-17 | 东南大学 | Adaptive virtual hybrid retransmission method applicable to satellite mobile communication system |
| CN104348574A (en) * | 2013-07-25 | 2015-02-11 | 普天信息技术有限公司 | Method and device for adjusting modulation and coding scheme |
Non-Patent Citations (1)
| Title |
|---|
| 余龙.: "基于LTE系统的自适应编码调制技术研究.", 《中国优秀硕士学位论文全文数据库信息科技辑2013年》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017166973A1 (en) * | 2016-03-29 | 2017-10-05 | 中兴通讯股份有限公司 | Coding scheme configuration method and device |
| WO2018149411A1 (en) * | 2017-02-15 | 2018-08-23 | 中兴通讯股份有限公司 | Data processing method and device |
| US11121724B2 (en) | 2017-02-15 | 2021-09-14 | Zte Corporation | Data processing method and device |
| US11496156B2 (en) | 2017-02-15 | 2022-11-08 | Zte Corporation | Data processing method and device |
| US11683052B2 (en) | 2017-02-15 | 2023-06-20 | Zte Corporation | Data processing method and device |
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|---|---|
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