CN113572635A - Power line carrier high-efficiency load data transceiving mechanism - Google Patents
Power line carrier high-efficiency load data transceiving mechanism Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
- H04L41/083—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability for increasing network speed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
- H04L41/0836—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability to enhance reliability, e.g. reduce downtime
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0893—Assignment of logical groups to network elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to a power line carrier high-efficiency load data receiving and transmitting mechanism, which comprises a data initialization mechanism and a communication strategy selection mechanism, wherein after a power line carrier communication network starts networking, a communication module records and counts the packet length and the packet number adopted by each STA node for transmitting a message, the corresponding communication success rate and the average signal-to-noise ratio every time the power line carrier communication network operates for a period of time; strategy selection is carried out by comparing the communication success rate and the average signal-to-noise ratio of different packet sending strategies. The invention can intelligently select the packet sending strategy corresponding to the packet length and the packet number in real time by combining the conditions of the signal-to-noise ratio and the communication success rate, and always keeps the optimal communication strategy, thereby achieving the optimal communication success rate and the optimal communication efficiency; under the same good channel condition, the communication speed can be greatly improved; under the same and poor channel condition, the success rate of communication can be improved; the same data message can adapt to channel change under the mechanism, the transmission reliability and the data rate are improved to the maximum efficiency, and more reliable communication capability and performance are realized.
Description
Technical Field
The invention relates to the technical field of power carrier communication, in particular to a power carrier high-efficiency load data transceiving mechanism.
Background
An HPLC broadband low-voltage power carrier communication networking structure, as shown in fig. 1, is a tree-shaped networking, and forms a route for a central coordinator CCO to reach any station STA through a proxy forwarding node PCO; STA directly networking with CCO is a level 1 node, and by analogy, STA directly networking with a level one PCO is a level 2 node, and at most 15 levels of networking are supported.
In HPLC communication, there are four communication message types, wherein SOF frames (start frames) are mainly used for transmitting data between devices. The current HPLC power carrier specification has four load data modes: respectively, a packet length 72/136/264/520, while a maximum of 4 packets per frame can be used. Most of the current technical implementations set the packet length and the number of packets according to the frame length, and preferentially use single packet transmission. For example, the length of a frame of message is 100 bytes, namely 136 packets are used, and the number of the packets is 1; the message length of one frame is 500 bytes, and 520 packets with packet number 1 are preferably used, while 264 packets with packet number 2 are not used. In the prior art, under different frequency bands and different field scenes, if the packet length is simply selected according to the frame length, the problem of low communication success rate may be caused by too large packet length.
Disclosure of Invention
The invention mainly aims to overcome the defects of the prior art and provide a power carrier high-efficiency load data receiving and transmitting mechanism which can intelligently select a packet transmitting strategy, always keep the optimal communication strategy, achieve the optimal communication success rate and communication efficiency, adapt to channel change and improve the transmission reliability and data rate to the maximum efficiency under various channel conditions.
The invention adopts the following technical scheme:
a power carrier high-efficiency load data transceiving mechanism comprises the following operation mechanisms:
the data initialization mechanism comprises: after a power line carrier communication network starts networking, the power line carrier communication network firstly operates for a period of time T, in the operation process, when STA nodes are electrified for the first time, corresponding packet length is selected according to frame length only, fixed packet length selection is not performed, and a communication module records and counts the packet length and the number of packets adopted by each STA node for transmitting the packets within the time T, as well as corresponding communication success RATE RATE and average signal-to-noise ratio SNR;
communication policy selection mechanism: every time the STA node operates for a period of time T, for each STA node, recording and counting a communication success RATE and an average signal-to-noise ratio (SNR) corresponding to a packet sending strategy corresponding to the packet length and the number of packets, and performing strategy selection by comparing the communication success RATE and the average signal-to-noise ratio (SNR) of different packet sending strategies, wherein the specific strategy selection method comprises the following steps:
i. when the average signal-to-noise ratio SNR is larger than or equal to a set threshold A, the communication environment is judged to be good;
selecting a packet sending strategy with a relatively large number of packets under the condition that the packet length is relatively large as a fixed packet sending strategy from all packet sending strategies with the communication success RATE being more than or equal to the set percentage B, if the packet sending strategy is consistent with the last packet sending strategy, not clearing the statistical data, otherwise clearing the statistical data, and repeating the step II;
if the communication success RATE RATE of all the package sending strategies is less than the set percentage B, clearing the statistical data no matter whether a fixed package sending strategy exists before, traversing the package sending strategies in sequence, and repeating the step II;
when the average signal-to-noise ratio SNR is less than a set threshold A, judging that the communication condition is poor;
selecting a packet sending strategy with a relatively large number of packets under the condition that the packet length is relatively large from all packet sending strategies with the communication success RATE RATE being larger than or equal to the set percentage B as a fixed packet sending strategy temporarily, wherein the strategy accounts for 50% of the sending proportion, the rest 50% of the packets are sent, the packet sending strategies are traversed in sequence, meanwhile, the statistical data of the time are cleared, and the second step is repeated;
if the communication success RATE RATE of all the packet sending strategies is less than the set percentage B, clearing the statistical data, traversing the packet sending strategies in sequence, and repeating the step II; if the average communication success RATE is less than the set percentage B in N continuous traversals, clearing the statistical data, selecting the strategy with the maximum communication success RATE from all the packet sending strategies to serve as a fixed packet sending strategy temporarily, wherein the strategy accounts for 50% of the sending proportion, and traversing the packet sending strategies in sequence if 50% of the packets are left, and repeating the step two.
Further, the statistical method for the communication success RATE is as follows: after the STA node sends the start frame SOF, whether the opposite end successfully receives the message is judged by judging whether the opposite end replies a selection acknowledgement frame SACK or not, so that the success rate of communication is counted.
Further, the statistical method of the average SNR of the STA nodes is: and acquiring a corresponding average signal-to-noise ratio through communication and reception with the STA node.
Further, the packet sending strategy comprises a packet length parameter and a packet number parameter, and strategy sequence numbers are compiled according to the packet length from small to large and the packet number from small to large in sequence.
Furthermore, when the packet sending strategies are sequentially traversed, the strategies are sequentially traversed from small to large according to the strategy sequence numbers until the average signal-to-noise ratio SNR is larger than or equal to the set threshold A and the communication success RATE RATE is larger than or equal to the set percentage B.
Further, the set percentage B is 95% to 100%.
Furthermore, the traversal time N is 2-5.
Further, the time T is 3-8 minutes.
Further, the packet length parameter includes four kinds of 72 bytes, 136 bytes, 264 bytes and 520 bytes.
Further, the packet number parameter includes two types, one packet and multiple packets.
As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are:
the invention can intelligently select the packet sending strategies corresponding to the packet length and the packet number in real time by recording and counting the communication success rate and the average signal-to-noise ratio of each packet sending strategy in real time according to the signal-to-noise ratio condition and the communication success rate condition, and always keeps the optimal communication strategy, thereby achieving the optimal communication success rate and communication efficiency, realizing the self-optimization function of the communication rate of the carrier module, and keeping the optimal load data mechanism in real time. Under the same good channel condition, the communication speed can be greatly improved; under the same and poor channel condition, the success rate of communication can be improved; the same data message can adapt to channel change under the mechanism, and the transmission reliability and the data rate can be improved to the maximum efficiency under various channel conditions; more reliable communication capabilities and performance are achieved.
Drawings
Fig. 1 is a schematic diagram of a broadband low voltage power carrier (HPLC) networking architecture showing CCO, PCO and STA nodes;
fig. 2 is a flowchart of a method of the operation mechanism of embodiment 1 of the present invention.
Detailed Description
The invention is further described below by means of specific embodiments.
Example 1
Referring to fig. 1 and fig. 2, a power carrier high-efficiency load data transceiving mechanism of the present invention includes the following operation mechanisms:
the data initialization mechanism comprises: after the power line carrier communication network starts networking, the power line carrier communication network firstly operates for a period of time T, the time T is 5 minutes, in the operation process, when the STA node is electrified for the first time, the transmission message only selects the corresponding packet length according to the frame length, and does not select the fixed packet length, and the communication module records and counts the packet sending strategy of the packet length and the packet number adopted by the transmission message of each STA node in the time T, the corresponding communication success RATE RATE and the average signal-to-noise ratio SNR.
The statistical method of the communication success RATE comprises the following steps: after the STA node sends the start frame SOF, whether the opposite end successfully receives the packet is determined by whether the opposite end replies a selective acknowledgement frame SACK, so as to count the communication success rate, which is shown in table 1.
TABLE 1
The statistical method of the average signal-to-noise ratio SNR of each STA node comprises the following steps: the corresponding average signal-to-noise ratio is obtained through communication reception with the STA node, and the average signal-to-noise ratio statistics are shown in table 2.
TABLE 2
| Node point | Average signal-to-noise ratio |
| 1 | SNR1 |
| 2 | SNR2 |
| 3 | SNR3 |
| … | … |
The packet sending strategy comprises a packet length parameter and a packet number parameter, wherein the packet length parameter comprises four types of 72 bytes, 136 bytes, 264 bytes and 520 bytes. The number of packets parameter includes two kinds of one packet and multiple packets. And the strategy sequence numbers are compiled according to the packet length from small to large and the packet number from small to large in turn. As shown in table 3.
TABLE 3
| Policy sequence number | Bag length | Number of bags |
| 1 | 72 | 1 |
| 2 | 72 | Multi-bag |
| 3 | 136 | 1 |
| 4 | 136 | Multi-bag |
| 5 | 264 | 1 |
| 6 | 264 | Multi-bag |
| 7 | 520 | 1 |
| 8 | 520 | Multi-bag |
Communication policy selection mechanism: every time the STA node operates for a period of time T, for each STA node, recording and counting a communication success RATE and an average signal-to-noise ratio (SNR) corresponding to a packet sending strategy corresponding to the packet length and the number of packets, and performing strategy selection by comparing the communication success RATE and the average signal-to-noise ratio (SNR) of different packet sending strategies, wherein the specific strategy selection method comprises the following steps:
i. when the average signal-to-noise ratio SNR is greater than or equal to the set threshold a, it is determined that the communication environment is good, in this embodiment, the set threshold a is 70 db;
selecting the packet sending strategy with the largest strategy sequence number in the table 3 as a fixed packet sending strategy from all packet sending strategies with the communication success RATE RATE being more than or equal to the set percentage of 95 percent, if the packet sending strategy at this time is consistent with the last packet sending strategy, not clearing the statistical data, otherwise clearing the statistical data at this time, and repeating the step II;
if the communication success RATE RATE of all the packet sending strategies is less than the set percentage of 95%, clearing the statistical data no matter whether a fixed packet sending strategy exists or not, traversing the packet sending strategies from small to large according to the strategy sequence number in the table 3, and repeating the step II;
when the average signal-to-noise ratio SNR is less than a set threshold A, judging that the communication condition is poor;
selecting the packet sending strategy with the largest strategy number in the table 3 from all packet sending strategies with the communication success RATE RATE of more than or equal to the set percentage of 95% as a fixed packet sending strategy temporarily, wherein the strategy accounts for 50% of the sending proportion, traversing the packet sending strategies from small to large according to the strategy numbers in the table 3 for the remaining 50% of the packets, simultaneously emptying the statistical data, and repeating the step II;
if the communication success RATE RATE of all the packet sending strategies is less than the set percentage of 95%, clearing the statistical data, traversing the packet sending strategies from small to large according to the strategy sequence numbers in the table 3, and repeating the step II; if the average communication success RATE is less than 95% of the set percentage in 3 continuous traversals, clearing the statistical data of the time, selecting the strategy with the maximum communication success RATE from all the packet sending strategies to serve as a fixed packet sending strategy temporarily, wherein the strategy accounts for 50% of the sending proportion, traversing the packet sending strategies in sequence from small to large according to the strategy sequence numbers in the table 3 if the remaining 50% of the packets are sent, and repeating the step II.
When the packet sending strategy is traversed in sequence, the strategy sequence numbers are traversed from small to large in sequence until the average signal-to-noise ratio SNR is larger than or equal to the set threshold A and the communication success RATE RATE is larger than or equal to the set percentage 95%.
By adopting the power carrier high-efficiency load data transceiving mechanism, the communication rate can be greatly improved under the same good channel condition; under the same poor channel condition, the success rate of communication can be improved. The same data message can adapt to channel change under the mechanism, and the transmission reliability and the data rate can be improved to the maximum efficiency under various channel conditions.
The noun explanations of related art terms referred to in the present invention:
HPLC: broadband low-voltage power carrier;
CCO: a Central Coordinator (Central Coordinator);
PCO (primary chlorinated polyethylene): proxy forwarding node (Proxy Coordinator);
STA: station (station);
RATE: a communication success rate;
SNR: signal-to-noise ratio;
SOF (solid oxide Filter): a start frame;
SACK: an acknowledgement frame is selected.
Example 2
This example differs from example 1 in that: in this embodiment, the set percentage threshold of the communication success rate is 98%, the threshold of the traversal times of the packet sending policy is 5, and the duration of the running time T is 8 minutes.
The above description is only two specific embodiments of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by the design concept should fall within the scope of infringing the present invention.
Claims (10)
1. A power carrier high-efficiency load data transceiving mechanism is characterized by comprising the following operation mechanisms:
the data initialization mechanism comprises: after a power line carrier communication network starts networking, the power line carrier communication network firstly operates for a period of time T, in the operation process, when STA nodes are electrified for the first time, corresponding packet length is selected according to frame length only, fixed packet length selection is not performed, and a communication module records and counts the packet length and the number of packets adopted by each STA node for transmitting the packets within the time T, as well as corresponding communication success RATE RATE and average signal-to-noise ratio SNR;
communication policy selection mechanism: every time the STA node operates for a period of time T, for each STA node, recording and counting a communication success RATE and an average signal-to-noise ratio (SNR) corresponding to a packet sending strategy corresponding to the packet length and the number of packets, and performing strategy selection by comparing the communication success RATE and the average signal-to-noise ratio (SNR) of different packet sending strategies, wherein the specific strategy selection method comprises the following steps:
i. when the average signal-to-noise ratio SNR is larger than or equal to a set threshold A, the communication environment is judged to be good;
selecting a packet sending strategy with a relatively large number of packets under the condition that the packet length is relatively large as a fixed packet sending strategy from all packet sending strategies with the communication success RATE being more than or equal to the set percentage B, if the packet sending strategy is consistent with the last packet sending strategy, not clearing the statistical data, otherwise clearing the statistical data, and repeating the step II;
if the communication success RATE RATE of all the package sending strategies is less than the set percentage B, clearing the statistical data no matter whether a fixed package sending strategy exists before, traversing the package sending strategies in sequence, and repeating the step II;
when the average signal-to-noise ratio SNR is less than a set threshold A, judging that the communication condition is poor;
selecting a packet sending strategy with a relatively large number of packets under the condition that the packet length is relatively large from all packet sending strategies with the communication success RATE RATE being larger than or equal to the set percentage B as a fixed packet sending strategy temporarily, wherein the strategy accounts for 50% of the sending proportion, the rest 50% of the packets are sent, the packet sending strategies are traversed in sequence, meanwhile, the statistical data of the time are cleared, and the second step is repeated;
if the communication success RATE RATE of all the packet sending strategies is less than the set percentage B, clearing the statistical data, traversing the packet sending strategies in sequence, and repeating the step II; if the average communication success RATE is less than the set percentage B in N continuous traversals, clearing the statistical data, selecting the strategy with the maximum communication success RATE from all the packet sending strategies to serve as a fixed packet sending strategy temporarily, wherein the strategy accounts for 50% of the sending proportion, and traversing the packet sending strategies in sequence if 50% of the packets are left, and repeating the step two.
2. The power carrier high efficiency payload data transceiving mechanism of claim 1, wherein the statistical method of the communication success RATE is as follows: after the STA node sends the start frame SOF, whether the opposite end successfully receives the message is judged by judging whether the opposite end replies a selection acknowledgement frame SACK or not, so that the success rate of communication is counted.
3. The power carrier high efficiency payload data transceiving mechanism of claim 1, wherein the statistical method of the average SNR of the STA nodes is: and acquiring a corresponding average signal-to-noise ratio through communication and reception with the STA node.
4. The mechanism as claimed in claim 1, wherein the packet sending strategy includes a packet length parameter and a packet number parameter, and the strategy sequence numbers are organized according to the packet length from small to large and the packet number from small to large.
5. The power carrier high-efficiency load data transceiving mechanism as claimed in claim 1, wherein, during the sequential traversal of the packet sending strategies, the packet sending strategies are sequentially traversed from small to large according to the strategy sequence numbers until the average signal-to-noise ratio SNR is greater than or equal to the set threshold a and the communication success RATE is greater than or equal to the set percentage B.
6. A mechanism for transceiving power carrier high efficiency load data according to claim 1 or 5, wherein said set percentage B is 95% to 100%.
7. A power carrier high efficiency payload data transceiving mechanism as claimed in claim 1 or 5, wherein the number of traversal N is 2-5.
8. The power carrier high efficiency payload data transceiving mechanism of claim 1, wherein the time T duration is 3-8 minutes.
9. A power carrier efficient payload data transceiving mechanism as recited in claim 1 or claim 4, wherein the packet length parameter comprises four of 72 bytes, 136 bytes, 264 bytes and 520 bytes.
10. A power carrier efficient payload data transceiving mechanism as recited in claim 1 or claim 4, wherein the packet count parameter comprises both one packet and a plurality of packets.
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