CN105680994A - LDPC encoding method for power transmission line monitoring data transmission link - Google Patents
LDPC encoding method for power transmission line monitoring data transmission link Download PDFInfo
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- CN105680994A CN105680994A CN201610060361.4A CN201610060361A CN105680994A CN 105680994 A CN105680994 A CN 105680994A CN 201610060361 A CN201610060361 A CN 201610060361A CN 105680994 A CN105680994 A CN 105680994A
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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
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses an LDPC encoding method for a power transmission line monitoring data transmission link; the method comprises the following steps: determining an LDPC packing capacity of a terminal monitoring node; obtaining an LDPS data packet and an LDPS position packet of the terminal monitoring node and synthesizing to obtain an LDPS transmission packet; filling a pre-determined data redundancy code and a transmission redundancy code in an LDPC packing number of the LDPS transmission packet; and carrying out decoding on the data redundancy code and the transmission redundancy code. According to the method disclosed by the invention, the problem of poor reliability in current power transmission line monitoring is solved; on the basis of strong network transmission reliability, the safety and the stability of transmission data are guaranteed; and thus, the overall stability of a power transmission system is improved, and the monitoring and operation cost is reduced.
Description
Technical field
The present invention relates to wireless broadband communication technical field, it is specifically related to a kind of LDPC coding method transmitting link for transmitting line monitoring data.
Background technology
Transmission line equipment condition monitoring system is the important technical realizing the management of power transmission and transformation equipment state operating maintenance, lifting power transmission and transformation professional production operational management lean level. System realizes the real-time perception of all kinds of power transmission and transforming equipment running status by various sensor technology, wide-area communication and the information processing technology, monitors that early warning, analyzing and diagnosing and assessment are predicted. Along with the quick propelling of State Grid Corporation of China's construction " the last one three is excellent " Modern Corporation and strong intelligent grid strategy, technological means raising electric power netting safe running level is adopted to become the inexorable trend of modernization power network development. Transmitting line on-line monitoring is as integral part extremely important in country's intelligent grid engineering, it is realize reliable, safety, the economy of national grid, the main means of efficient, environmental friendliness target, to improving electric power safety operation level further, there is very positive meaning.
At present, the many employings of transmitting line on-line monitoring are based on wireless 3G (WCDMA) technology of public network, but but there is a lot of problem in actual applications, blind area is there is as 3G network covers region, the on-line monitoring equipment of transmission over radio cannot be disposed in some remote districts, there is signal by force in the region that part has covered 3G network, cannot complete the situation of actual monitored demand. In addition by the restriction of the uplink bandwidth of network of 3G technology own, the sharpness that video is supported is poor, can only support that low bandwidth is applied, it is very difficult to provide smooth high-definition video monitoring service, and adopt wireless public network that campus network will occur always, especially under large bandwidth demand, campus network will sharply increase. In information security, all data of wireless public network all pass through operator's network, add transfer link, and real-time is poor, and there is the problem of data security risk.
Summary of the invention
In view of this, a kind of LDPC coding method transmitting link for transmitting line monitoring data provided by the invention, this method solves the problem of poor reliability in the monitoring of existing transmitting line; Ensureing the basis that network transmission reliability is strong ensure that the security of transmission data and stability, and then improves the stability of transmission of electricity system entirety, and reduces monitoring and running cost.
It is an object of the invention to be achieved through the following technical solutions:
Transmit a LDPC coding method for link for transmitting line monitoring data, comprise the steps:
Step 1. determines the LDPC packing capacity of terminal monitoring node;
Step 2. obtains LDPS data packet and the LDPS position bag of described terminal monitoring node, and synthesis obtains LDPS transmission package;
LDPC packing number in described LDPS transmission package is inserted data redundanat code and the transmitting redundancy code of predefine by step 3.;
Described data redundanat code and transmitting redundancy code are decoded by step 4..
Preferably, described step 1 comprises:
According to the current channel parameter between terminal monitoring node and long-range substation node, it is determined that the LDPC packing capacity of described terminal monitoring node.
Preferably, described step 2 comprises:
2-1. packs the transmission data of current terminal monitoring node according to described LDPC capacity of packing;
2-2. obtains the LDPC packing number of current terminal monitoring node, obtains described terminal monitoring node LDPS data packet;
The GPS information of described terminal monitoring node is carried out LDPC packing by 2-3., obtains the LDPS position bag of terminal monitoring node;
The LDPS data packet of described terminal monitoring node and LDPS position are wrapped by 2-4., synthesize the LDPS transmission package of described terminal monitoring node.
Preferably, also comprise before described step 4:
Described LDPS transmission package, data redundanat code and transmitting redundancy code are sent to aggregation node.
Preferably, described step 4 comprises:
Described data redundanat code and transmitting redundancy code are decoded by 4-1., obtain and judge the GPS information of current terminal monitoring node, obtain the LDPS data of described aggregation node;
4-2. terminal monitoring node is by the described LDPS Packet Generation of described aggregation node extremely long-range substation node.
Preferably, described 4-1 comprises:
A. described transmitting redundancy code is decoded by aggregation node, obtains the GPS information of current terminal monitoring node;
B. judge that whether described GPS information is the GPS information of the terminal monitoring node prestored;
If then the LDPS transmission package of described terminal monitoring node being decoded;
If not, then alarm message is outwards sent;
C. described aggregation node is according to the terminal monitoring node list of this locality, the described LDPS transmission package received is gathered;
D. judge that whether the quantity of LDPS transmission package of described terminal monitoring node is less than the terminal monitoring number of nodes in the terminal monitoring node list of described this locality;
If then extracting and not receiving terminal monitoring node information, to described do not receive terminal monitoring node send report instruction;
If not, the LDPS transmission package of current described terminal monitoring node is carried out LDPS packing, obtain the LDPS data packet of aggregation node;
E. the total quantity of the LDPS transmission package of terminal monitoring node is inserted the data redundanat code of predefine.
From above-mentioned technical scheme it may be seen that the present invention provides a kind of LDPC coding method transmitting link for transmitting line monitoring data, it is determined that the LDPC packing capacity of terminal monitoring node; Obtaining LDPS data packet and the LDPS position bag of terminal monitoring node, synthesis obtains LDPS transmission package; Number of being packed by LDPC in LDPS transmission package inserts data redundanat code and the transmitting redundancy code of predefine; Data redundanat code and transmitting redundancy code are decoded.
With immediate prior art ratio, technical scheme provided by the invention has following excellent effect:
1, in technical scheme provided by the present invention, according to the current channel parameter between terminal monitoring node and long-range substation node, it is determined that the LDPC packing capacity of terminal monitoring node;Solve the problem of poor reliability in the monitoring of existing transmitting line.
2, technical scheme provided by the present invention, the transmission data of current terminal monitoring node are packed by the LDPC packing capacity according to terminal monitoring node, and obtain the packing number of the LDPC of current terminal monitoring node, obtain the LDPS data packet of terminal monitoring node; Ensureing the basis that network transmission reliability is strong ensure that the security of transmission data and stability, and then improves the stability of transmission of electricity system entirety, and reduces monitoring and running cost.
3, technical scheme provided by the present invention, inserts the data redundanat code of predefine by the packing number of the LDPS data packet of this terminal monitoring node. Solve the problem of poor reliability in the monitoring of existing transmitting line.
4, technical scheme provided by the invention, is widely used, and has significant Social benefit and economic benefit.
Accompanying drawing explanation
Fig. 1 is the schema of a kind of LDPC coding method transmitting link for transmitting line monitoring data of the present invention;
Fig. 2 be the present invention LDPC coding method in the schematic flow sheet of step 2;
Fig. 3 be the present invention LDPC coding method in the schematic flow sheet of step 4;
Fig. 4 is the schema of the step S101 to S103 of the embody rule example of the present invention;
Fig. 5 is the schema of the step S104 to S105 of the embody rule example of the present invention;
Fig. 6 is the schema of the step S1061 to S107 of the embody rule example of the present invention.
Embodiment
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 clearly and completely described, it is clear that described embodiment is only the present invention's part embodiment, instead of whole embodiments. Based on embodiments of the invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the present invention provides a kind of LDPC coding method transmitting link for transmitting line monitoring data, comprises the steps:
Step 1. determines the LDPC packing capacity of terminal monitoring node;
Step 2. obtains LDPS data packet and the LDPS position bag of terminal monitoring node, and synthesis obtains LDPS transmission package;
LDPC packing number in LDPS transmission package is inserted data redundanat code and the transmitting redundancy code of predefine by step 3.;
Data redundanat code and transmitting redundancy code are decoded by step 4..
Wherein, step 1 comprises:
According to the current channel parameter between terminal monitoring node and long-range substation node, it is determined that the LDPC packing capacity of terminal monitoring node.
As shown in Figure 2, step 2 comprises:
2-1. packs the transmission data of current terminal monitoring node according to LDPC capacity of packing;
2-2. obtains the LDPC packing number of current terminal monitoring node, obtains terminal monitoring node LDPS data packet;
The GPS information of terminal monitoring node is carried out LDPC packing by 2-3., obtains the LDPS position bag of terminal monitoring node;
The LDPS data packet of terminal monitoring node and LDPS position are wrapped by 2-4., the LDPS transmission package of synthesis terminal monitoring node.
Wherein, also comprise before step 4:
LDPS transmission package, data redundanat code and transmitting redundancy code are sent to aggregation node.
As shown in Figure 3, step 4 comprises:
Data redundanat code and transmitting redundancy code are decoded by 4-1., obtain and judge the GPS information of current terminal monitoring node, obtain the LDPS data of aggregation node;
4-2. terminal monitoring node is by the LDPS Packet Generation of aggregation node extremely long-range substation node.
Wherein, 4-1 comprises:
A. transmitting redundancy code is decoded by aggregation node, obtains the GPS information of current terminal monitoring node;
B. judge that whether GPS information is the GPS information of the terminal monitoring node prestored;
If then the LDPS transmission package of terminal monitoring node being decoded;
If not, then alarm message is outwards sent;
C. aggregation node is according to the terminal monitoring node list of this locality, the LDPS transmission package received is gathered;
D. judge that whether the quantity of LDPS transmission package of terminal monitoring node is less than the terminal monitoring number of nodes in the terminal monitoring node list of this locality;
If then extracting and not receiving terminal monitoring node information, report instruction to not receiving the transmission of terminal monitoring node;
If not, the LDPS transmission package of current terminal monitoring node is carried out LDPS packing, obtain the LDPS data packet of aggregation node;
E. the total quantity of the LDPS transmission package of terminal monitoring node is inserted the data redundanat code of predefine.
As shown in Figs. 4-6, the present invention provides the embody rule example of a kind of LDPC coding method transmitting link for transmitting line monitoring data, as follows:
It is implemented on and arranges in the multistage communication link of terminal monitoring node, aggregation node, long-range substation node and master station at transmitting line,
Step S101; According to the current channel parameter between terminal monitoring node and long-range substation node, it is determined that the LDPC packing capacity of terminal monitoring node;
Step S102; The transmission data of current terminal monitoring node are packed by the LDPC packing capacity according to described terminal monitoring node, and obtain the packing number of the LDPC of current terminal monitoring node, obtain the LDPS data packet of terminal monitoring node;
Step S103; The packing number of the LDPS data packet of this terminal monitoring node is inserted the data redundanat code of predefine.
Wherein, described step S102 also comprises:
The GPS information of described terminal monitoring node is carried out LDPC packing, obtains the LDPS position bag of terminal monitoring node; By the LDPS position bag of the LDPS data packet of described terminal monitoring node and described monitor node, the LDPS transmission package of synthesis terminal monitoring node.
Wherein, also comprise in after described step S103;
Step S104, inserts the transmitting redundancy code of predefine by the packing number of the LDPS transmission package of this terminal monitoring node;
Wherein, also comprise in after described step S104;
Step S105, is sent to described aggregation node by the LDPS transmission package of described terminal monitoring node, described data redundanat code and transmitting redundancy code.
Wherein, also comprise after described step S105,
Step S1061: described transmitting redundancy code is decoded by described aggregation node, obtains the GPS information of current terminal monitoring node;
Step S1062: whether the GPS information judging described terminal monitoring node is the GPS information of the terminal monitoring node prestored, if then the LDPS transmission package of described terminal monitoring node being decoded, if not, then outwards sends alarm message.
Wherein, also comprise after step S1062:
Step S1063: the LDPS transmission package of the described terminal monitoring node received, according to the terminal monitoring node list of this locality, is gathered by described aggregation node;
Step S1063: judge that whether the LDPS transmission package quantity of described terminal monitoring node is less than the terminal monitoring number of nodes in the terminal monitoring node list of described this locality, if, then extract and do not receive terminal monitoring node information, to described do not receive terminal monitoring node send report instruction;If not, the LDPS transmission package of current described terminal monitoring node is carried out LDPS packing, obtain the LDPS data packet of aggregation node;
Step S1064: by the total quantity of the LDPS transmission package of terminal monitoring node, inserts the data redundanat code of predefine.
Wherein, also comprise after step S1064:
Step S107: terminal monitoring node by the LDPS Packet Generation of aggregation node in described long-range substation node.
Above embodiment is only not intended to limit in order to the technical scheme of the present invention to be described; although with reference to above-described embodiment to invention has been detailed description; the specific embodiment of the present invention still can be modified or equivalent replacement by those of ordinary skill in the field; and these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, within the claims of its present invention all awaited the reply in application.
Claims (6)
1. one kind transmits the LDPC coding method of link for transmitting line monitoring data, it is characterised in that, described method comprises the steps:
Step 1. determines the LDPC packing capacity of terminal monitoring node;
Step 2. obtains LDPS data packet and the LDPS position bag of described terminal monitoring node, and synthesis obtains LDPS transmission package;
LDPC packing number in described LDPS transmission package is inserted data redundanat code and the transmitting redundancy code of predefine by step 3.;
Described data redundanat code and transmitting redundancy code are decoded by step 4..
2. the method for claim 1, it is characterised in that, described step 1 comprises:
According to the current channel parameter between terminal monitoring node and long-range substation node, it is determined that the LDPC packing capacity of described terminal monitoring node.
3. the method for claim 1, it is characterised in that, described step 2 comprises:
2-1. packs the transmission data of current terminal monitoring node according to described LDPC capacity of packing;
2-2. obtains the LDPC packing number of current terminal monitoring node, obtains described terminal monitoring node LDPS data packet;
The GPS information of described terminal monitoring node is carried out LDPC packing by 2-3., obtains the LDPS position bag of terminal monitoring node;
The LDPS data packet of described terminal monitoring node and LDPS position are wrapped by 2-4., synthesize the LDPS transmission package of described terminal monitoring node.
4. the method for claim 1, it is characterised in that, also comprise before described step 4:
Described LDPS transmission package, data redundanat code and transmitting redundancy code are sent to aggregation node.
5. the method for claim 1, it is characterised in that, described step 4 comprises:
Described data redundanat code and transmitting redundancy code are decoded by 4-1., obtain and judge the GPS information of current terminal monitoring node, obtain the LDPS data of described aggregation node;
4-2. terminal monitoring node is by the described LDPS Packet Generation of described aggregation node extremely long-range substation node.
6. method as claimed in claim 5, it is characterised in that, described 4-1 comprises:
A. described transmitting redundancy code is decoded by aggregation node, obtains the GPS information of current terminal monitoring node;
B. judge that whether described GPS information is the GPS information of the terminal monitoring node prestored;
If then the LDPS transmission package of described terminal monitoring node being decoded;
If not, then alarm message is outwards sent;
C. described aggregation node is according to the terminal monitoring node list of this locality, the described LDPS transmission package received is gathered;
D. judge that whether the quantity of LDPS transmission package of described terminal monitoring node is less than the terminal monitoring number of nodes in the terminal monitoring node list of described this locality;
If then extracting and not receiving terminal monitoring node information, to described do not receive terminal monitoring node send report instruction;
If not, the LDPS transmission package of current described terminal monitoring node is carried out LDPS packing, obtain the LDPS data packet of aggregation node;
E. the total quantity of the LDPS transmission package of terminal monitoring node is inserted the data redundanat code of predefine.
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| CN201610060361.4A CN105680994B (en) | 2016-01-28 | 2016-01-28 | LDPC coding method for transmission link of monitoring data of power transmission line |
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| CN201610060361.4A CN105680994B (en) | 2016-01-28 | 2016-01-28 | LDPC coding method for transmission link of monitoring data of power transmission line |
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2016
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| CN1625262A (en) * | 2003-12-03 | 2005-06-08 | 北京泰美世纪科技有限公司 | Framing method based on LDPC |
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