Network management channel implementation system suitable for wireless optical fiber covering system

Abstract

The invention provides a network management channel implementation system suitable for a wireless optical fiber covering system. The network management channel implementation system comprises near-end monitoring, far-end monitoring, a near-end protocol processing unit, a far-end protocol processing unit, a near-end frequency-shift keying modulator, a far-end frequency-shift keying modulator, a coupler, a laser, a detector and an amplifier. The near-end monitoring and the far-end monitoring are used for sending and receiving monitor data, the near-end protocol processing unit and the far-end protocol processing unit are used for carrying out protocol processing on the monitor data, and the near-end frequency-shift keying modulator and the far-end frequency-shift keying modulator modulate the monitor data through the protocol processing into radio-frequency signals or demodulate the received radio-frequency signals into the monitor data through the protocol processing. The radio-frequency signals are coupled to the laser through the coupler and are converted into optical signals to be sent out. After the optical signals are converted into electric signals through the detector, the electric signals are amplified through the amplifier. According to the network management channel implementation system, the data transmitted in a monitoring channel are guaranteed through reliable protocol processing, and the reliability of the monitoring channel can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of radio frequency communication, in particular to a realization system of a high-reliability network management channel suitable for a wireless optical fiber coverage system. Background technique [0002] Most of the existing mobile communication systems, especially the monitoring methods of the optical fiber direct coverage system, use the ordinary frequency shift keying (FSK) monitoring channel for monitoring: in this way, the data transmitted in the monitoring channel is simple and unreliable. The guarantee of protocol processing and the reliability of the channel provided cannot be guaranteed. It can be applied in a one-to-one system, but it is very unstable for a one-to-many application, and there are often situations where monitoring fails, and the current monitoring Most of the communication chips of the mode choose CC1000 or NRF905, and there are other disadvantages: [0003] 1. The production proc...

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Problems solved by technology

[0002] Most of the existing mobile communication systems, especially the monitoring methods of the optical fiber direct coverage system, use the ordinary frequency shift keying (FSK) monitoring channel for monitoring: in this way, the data transmitted in the monitoring channel is simple and unreliable. The guarantee of protocol processing and the reliability of the channel provided cannot be guaranteed. It can be applied in a one-to-one system, but it is very unstable for a one-to-many application, and there are often situations where monitoring fails, and the current monitoring Most of the communication chips of the mode choose CC1000 or NRF905, and there are other disadvantages:

[0003] 1. The production process of the CC1000 chip is relatively primitive, and the package integration is low. It needs to be equipped with a huge peripheral circuit, and it is highly dependent on the stability of the peripheral circuit. It often works abnormally due to the normal fluctuation of the performance of the peripheral circuit, resulting in packet loss in monitoring. , the monitoring fails, and even the entire monitoring system fails

In harsh application environments such as high and low temperature, the performance is more obvious, and the stability of communication cannot be guaranteed

[0004] 2. The local oscillator power of the NRF905 chip itself is relatively large, and it will generate high spurs during work, which will affect the entire communication system. During the data processing process, the byte data sent and received is fixed, and a complex data processing mechanism must be adopted, and the application is extremely inflexible.

[0005] 3. In the traditional scheme of using CC1000 or NRF905 and other communication chips, the maximum data transmission rate does not exceed 100kbps, and the system that requires high-speed data transmission lacks an effective monitoring solution

[0006] In the current status of monitoring channels, the occurrence rate of problems is very high, and if they cannot be found in time, it is easy to cause interruption of the communication system and bring great inconvenience to the use of operators.

System integrators need to be equipped with complex monitoring and protection mechanisms to query the monitoring status, or directly establish a backup monitoring channel. The entire system design is redundant and the cost is high

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