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RTU data reliable transmission control method for narrow-band asymmetric channel

An asymmetric channel and transmission control technology, applied in the field of RTU reliable data transmission control, can solve problems such as the inability to ensure reliable transmission of uplink information, and achieve the effect of ensuring transmission efficiency and reliability and enhancing control capabilities.

Active Publication Date: 2017-03-15
NANJING JINMA INTELLIGENCE TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

In the face of multi-element telemetry, these channels cannot guarantee reliable transmission of uplink information

Method used

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  • RTU data reliable transmission control method for narrow-band asymmetric channel
  • RTU data reliable transmission control method for narrow-band asymmetric channel
  • RTU data reliable transmission control method for narrow-band asymmetric channel

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Embodiment Construction

[0020] The present invention will be further explained below in conjunction with the accompanying drawings.

[0021] A kind of RTU data reliable transmission control method of narrowband asymmetrical channel, narrowband asymmetrical channel can be commonly used short wave, ultrashort wave, GPRS and PSTN, concrete steps are as follows:

[0022] Step (1), configure the parameters of the data sending strategy: for the data stored in the sending buffer, set the triggering conditions for executing the sending operation timing, the triggering conditions include fixed value storage sending and timing storage sending. According to the business requirements of the RTU to collect data, a strategy can be specified when initializing parameter configuration.

[0023] The sending of the fixed value storage is as follows: setting the first counter, the count value of which is the number of messages of the actual measurement data of hydrology and water resources, and the number of messages co...

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Abstract

The invention discloses a RTU data reliable transmission control method for a narrow-band asymmetric channel. The method comprises adopting the techniques of constant-value storage sending, time storage sending, automatic data supplement and delay waiting after completion of sending, and controls a sending rate by adjusting sizes of data packets, sending intervals and re-sending times. By using the method provided by the invention, key factors of successful data sending of a RTU is controlled in the case of bursting of messages, and control capacity of a RTU communication protocol is enhanced. On one hand, delay waiting parameters and maximal packet lengths of different channels are adjusted, and on the other hand, data which is unsuccessfully sent is supplemented. According to the method of the invention, reliability of the hypo-real-time data of the asymmetric low-speed channel is effectively improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for controlling reliable data transmission of an RTU in the case of asymmetric uplink and downlink channels. Background technique [0002] The frequency spectrum of modern digital communication systems is mainly concentrated between 300KHz and 5GHz, especially the frequency band between 500KHz and 2GHz is used more intensively. Among them, the direct transmission distance of 300KHz-300MHz long-wave, medium-wave, short-wave and ultra-short wave communication is between several hundred - Thousands of kilometers, the communication rate varies greatly. Using these means of communication, the sender and receiver can communicate directly within a visible distance, or complete data transmission via few relays. In this communication mode, different bandwidths are often set for the uplink and downlink channels to ensure that the channel with a large amount of data has a la...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/18
CPCH04L1/0002H04L1/0006H04L1/1806H04L1/1874H04L1/188
Inventor 金惠英苏勇高屹李祥勇姚文才李胜
Owner NANJING JINMA INTELLIGENCE TECH CO LTD
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