CN217935628U - Self-adaptive system for through-the-earth data transmission rate - Google Patents
Self-adaptive system for through-the-earth data transmission rate Download PDFInfo
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- CN217935628U CN217935628U CN202220625491.9U CN202220625491U CN217935628U CN 217935628 U CN217935628 U CN 217935628U CN 202220625491 U CN202220625491 U CN 202220625491U CN 217935628 U CN217935628 U CN 217935628U
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Abstract
The utility model discloses a pass through ground data transmission rate's self-adaptation system, including first receiving and dispatching port and second receiving and dispatching port, two sets of receiving and dispatching ports can interactive communication, all can regard as sending end or receiving terminal, and the receiving and dispatching port includes transmission rate coding module, transceiver module, control module, error rate judgement module, feedback module, and transmission rate coding module includes transmission rate coding characteristic unit, error code value information number coding unit; the error rate judging module is used for judging the error rate of the data received by the receiving and sending module and giving an error rate judging value. The system adopts error code rate value judgment as a basis for rate conversion, can realize the self-adaptation of the transmission rate by transterrestrially receiving and transmitting the transmission error rate judgment value, and can more accurately, reliably and quickly complete the communication task.
Description
Technical Field
The utility model belongs to the technical field of emergency communication, concretely relates to pass through ground data transmission rate's adaptive system.
Background
Through-the-earth communication system signals need to be transmitted by taking the stratum as a propagation medium. Due to the huge attenuation of the formation medium to the transmission signal, the difference of the signal transmission performance is large, the transmission characteristic is not ideal, and the effective signal received by the receiving point is very weak.
The existing through-the-earth communication system is mainly implemented by a magnetic conduction through-the-earth communication technology and an elastic wave based through-the-earth communication technology, and the magnetic conduction through-the-earth communication technology can adopt an antenna magnetic induction near-field electromagnetic wave through-the-earth mode and a current injection ground electrode electric field through-the-earth mode. Particularly, the bandwidth of the through-the-earth communication transmission signal is narrow, and is usually only about 300Hz-3000 Hz.
In view of the above, the attenuation of the formation medium to the electromagnetic wave is large, and the higher the frequency is, the more serious the attenuation is, so that the transmission characteristic of the low-frequency electromagnetic wave in the formation is poor, the attenuation characteristic is strong, the interference characteristic is complex, and the like, when the through-the-earth communication system performs signal transmission through the formation, the effective signal received by the receiving point is very weak, which brings great difficulty to effective receiving and processing of the signal, and causes that the analog voice signal is difficult to effectively transmit and demodulate in the actual through-the-earth communication implementation, and the digital signal transmission has high error rate and extremely low rate.
SUMMERY OF THE UTILITY MODEL
For solving prior art's the aforesaid not enough, the utility model provides a pass through ground data transmission rate's adaptive system to the stratum medium electromagnetic wave transmission characteristic, can effectively solve its decay characteristic strong, transmission characteristic poor, interference characteristic complicated and the weak scheduling problem of received signal.
In order to achieve the purpose, the utility model adopts the technical proposal that: a self-adaptive system of through-the-earth data transmission rate comprises a first transceiving port and a second transceiving port, wherein the two groups of transceiving ports can be in interactive communication and can be used as a transmitting end or a receiving end, and each transceiving port comprises a transmission rate coding module, a transceiving module, a control module, a bit error rate judging module and a feedback module;
the transmission rate coding module is used for the transmitting end to code the transmission rate and then transmit the transmission rate to the receiving end; the transmission rate coding module comprises a transmission rate coding characteristic unit and an error code value information number coding unit;
the receiving and sending module is used for receiving data from the sending end by the receiving end and sending the data fed back by the feedback module to the sending end;
the error rate judging module is used for judging the error rate of the data received by the transceiving module and giving an error rate judging value;
the feedback module determines the transmission rate of the sending end and the receiving end according to the error rate judgment value and feeds back the transmission rate to the transceiver module;
the control module is used for controlling the transmission of the data and the feedback of the transmission rate.
Further, the transmission rate coding feature unit comprises the class I transmission rate coding unit and a class II transmission rate coding unit.
Furthermore, the type I transmission rate encoding unit includes digital voice communication, long message communication, and file transmission communication.
Further, the class II transmission rate coding unit includes code communication, short message communication, and short message communication.
Further, the error value information number encoding unit is configured to encode a transmission rate.
Furthermore, the error code value information number coding unit adopts a time division error code value information number coding mode and marks the duty time slot of the transmission rate coding 100 error code value information of the through-the-earth communication transceiving.
Further, the transmission rates comprise 8 through-the-earth transmission rates including 2400bit/s, 1200bit/s, 600bit/s, 300bit/s, 150bit/s, 75bit/s, 30bit/s and 15 bit/s.
Compared with the prior art, the beneficial effects of the utility model are that:
the system can intelligently and automatically change the communication transmission rate of the through-the-earth receiving and transmitting parties according to the real-time state of the through-the-earth channel during transmission under the condition of fully meeting the through-the-earth communication service, and improves the performances of the through-the-earth communication system such as the data transmission reliability, stability, adaptability, flexibility and the like.
The system for realizing the through-the-earth data transmission rate self-adaptation adopts error code rate value judgment as a basis for rate conversion, can realize the self-adaptation of the transmission rate by receiving and transmitting the transmission error rate judgment value through the through-the-earth, and can more accurately, reliably and quickly complete a communication task.
Drawings
FIG. 1 is a block diagram of the adaptive system of the present invention;
fig. 2 is a flowchart illustrating the operation of the adaptive system according to an embodiment of the present invention.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will combine the drawings in the present invention to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments, based on the embodiments in the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.
The specific implementation mode is as follows:
a self-adaptive system of through-the-earth data transmission rate comprises a first transceiving port and a second transceiving port, wherein two groups of transceiving ports can be in interactive communication and can be used as a transmitting end or a receiving end, and each transceiving port comprises a transmission rate coding module, a transceiving module, a control module, a bit error rate judging module and a feedback module;
the transmission rate coding module is used for the transmitting end to code the transmission rate and then transmit the transmission rate to the receiving end; the transmission rate coding module comprises a transmission rate coding characteristic unit and an error code value information number coding unit;
the receiving and sending module is used for receiving data from the sending end by the receiving end and sending the data fed back by the feedback module to the sending end;
the error rate judging module is used for judging the error rate of the data received by the receiving and sending module and giving an error rate judging value;
the feedback module determines the transmission rate of the sending end and the receiving end according to the bit error rate judging value and feeds the transmission rate back to the receiving and sending module;
the control module is used for controlling the transmission of the data and the feedback of the transmission rate.
Further, the error value information number encoding unit is configured to encode a transmission rate.
Furthermore, the error code value information number coding unit adopts a time division error code value information number coding mode and marks the duty time slot of the transmission rate coding 100 error code value information of the through-the-earth communication receiving and transmitting.
The information number of 2400bit/s error code value is 100, and the occupied time is 42ms; the information number of 1200bit/s error code value is 100, and the time is 84ms; the information number of 600bit/s error code value is 100, and the time is 168ms; the information number of the 300bit/s error code value is 100, and the occupied time is 334ms; the information number of 150bit/s error code value is 100, and the time is 668ms; the information number of the 75bit/s error code value is 100, and the time is 1336ms; the number of 30bit/s error code value information is 100, and the occupied time is 3334ms; the 15bit/s error code value information number is 100, the occupied time is 6668ms, see attached table 1.
Attached table 1: duty time slot of transmitting-receiving transmission rate coding 100 error code value information of through-the-earth communication
According to the through-the-earth transmission characteristics and the through-the-earth service transmission requirements, through-the-earth digital voice communication, long message communication and file transmission rates are 2400bit/s, 1200bit/s and 600bit/s, and the lowest transmission rate can be 300bit/s; therefore, the rate selection in the actual through-the-earth communication is generally intelligently preferred among 2400bit/s, 1200bit/s, 600bit/s, and 300 bit/s.
Furthermore, as the bandwidth of the through-the-earth communication transmission signal is narrow and is only about 300Hz to 3000Hz, the through-the-earth data transmission rate range is designed to be 30 to 3000 bit/s according to the fragrance and concentration law. According to the actual test statistical rule and the requirement of the through-the-earth communication service, selecting the through-the-earth data transmission rates as follows: 2400bit/s, 1200bit/s, 600bit/s, 300bit/s, 150bit/s, 75bit/s, 30bit/s, 15bit/s, and the like.
Further, for meeting and adapting to the minimum communication service through the ground under the complicated electromagnetic environment conditions such as strong interference during through-the-ground transmission, for example: code communication, short message and short message communication, wherein the rate selection in the transparent communication is generally selected intelligently from the transmission rates of 150bit/s, 70bit/s, 30bit/s and 15 bit/s; the transmission rate coding feature unit comprises the class I transmission rate coding unit and a class II transmission rate coding unit. The I-type transmission rate coding unit comprises digital voice communication, long message communication and file transmission communication; the type II transmission rate coding unit comprises code communication, short message communication and short message communication, and all services of through-the-earth transmission communication can be transmitted in the type I transmission rate coding unit on the premise of better channel transmission quality.
According to the communication transmission effectiveness, reliability and anti-interference communication theory, in order to adapt to accurate, reliable and rapid completion of the through-the-earth communication service, the through-the-earth communication class I adaptive rate coding and the through-the-earth communication class II adaptive rate coding corresponding to the class I transmission rate coding unit and the class II transmission rate coding unit are shown in attached tables 2 and 3.
Table 2: speed coding code I of transmitting end of through-the-earth communication
Table 3: speed coding code II of transmitting end of through-the-earth communication
Further, the receiving end judges the value according to the error rate transmitted by receiving different transmission rates, the information number of the error code value is correctly received after each transmission rate is transmitted by 100 bits, the judgment error rate is 0, and the error code rate judgment value VSER is 100; correctly receiving 99 bits of error code value information, judging that the error code rate is 1 and the error code rate judgment value is 99; if the error code value information number is correctly received to be 0bit, the error rate is judged to be 100, and the error rate judgment value is 0;
error rate value: VSER =100-Ii, and i is more than or equal to 1 and less than or equal to 100.
Further, the receiving end feeds back the error rate discrimination value to the sending end according to the error rate of the received data, and the sending end adjusts the corresponding transmission rate in real time according to the error rate discrimination value fed back by the receiving end and then sends the data to the receiving end, so that the optimization of data transmission is alternately realized.
The specific working process is as follows:
the transmitting end transmitting rate coding module codes the transmitting rate, and the transmitting end transceiver module transmits the transmitting rate code to the receiving end;
the receiving end transceiver module receives the transmission rate code, and the error rate judging module analyzes the information and judges the error rate and feeds back the error rate judging value to the feedback module; the feedback module determines the transmission rate which should be adopted by the transmission of the sending end and the receiving end according to the bit error rate judging value and feeds the transmission rate back to the receiving and sending module; the receiving end transceiver module sends the transmission rate fed back by the feedback module to a sending end;
the sending end sends data according to the feedback transmission rate;
the receiving end receives the data and judges whether the data is wrong.
The utility model provides a pass through ground data communication rate adaptive system can pass through the real-time status of ground channel when transmitting according to the transmission, under the circumstances of fully provided ground communication service, intelligence automatic change receives and dispatches both sides' communication transmission rate thoroughly, improves performances such as reliability, stability, adaptability and flexibility of ground communication system data transmission thoroughly.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A self-adaptive system of through-the-earth data transmission rate comprises a first transceiving port and a second transceiving port, wherein two groups of transceiving ports can be in interactive communication and can be used as a transmitting end or a receiving end;
the transmission rate coding module is used for the transmitting end to code the transmission rate and then transmit the transmission rate to the receiving end; the transmission rate coding module comprises a transmission rate coding characteristic unit and an error code value information number coding unit;
the receiving and sending module is used for receiving data from the sending end by the receiving end and sending the data fed back by the feedback module to the sending end;
the error rate judging module is used for judging the error rate of the data received by the receiving and sending module and giving an error rate judging value;
the feedback module determines the transmission rate of the sending end and the receiving end according to the bit error rate judging value and feeds the transmission rate back to the receiving and sending module;
the control module is used for controlling the transmission of the data and the feedback of the transmission rate.
2. The system of claim 1, wherein the transmission rate coding feature unit comprises a class I transmission rate coding unit and a class II transmission rate coding unit.
3. The system of claim 2, wherein the class I transmission rate encoding unit comprises digital voice communication, long message communication, and file transfer communication.
4. The system of claim 2, wherein the class II transmission rate coding unit comprises code communication, short message communication, and short message communication.
5. The system of claim 1, wherein the error code value information number encoding unit is configured to encode the transmission rate.
6. The system of claim 5, wherein the error code value information number coding unit uses a time division error code value information number coding method to mark a duty slot of the transmission rate coding 100 error code value information of the through-the-earth communication.
7. The system of claim 1, wherein the transmission rates comprise 8 through-the-earth transmission rates including 2400bit/s, 1200bit/s, 600bit/s, 300bit/s, 150bit/s, 75bit/s, 30bit/s, 15 bit/s.
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CN114826482B (en) * | 2022-03-22 | 2024-03-26 | 河南中多科技发展有限公司 | self-adaptive method for through-the-earth data transmission rate |
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