The invention provides a multi-service isolation real-time communication system and method for a power terminal communication access network. The system comprises an optical line module, multiple optical distribution networks and multiple optical network units; the optical line module is provided with at least one PON interface, each PON interface is connected with the first optical distribution network, the optical distribution networks are connected in series, and each optical distribution network is connected with one corresponding optical network unit; each optical network unit is connected with multiple service terminal devices. According to the multi-service isolation real-time communication system and method for the power terminal communication access network, power system services with different power safety level requirements and isolation requirements can be loaded by the same communication system; through a logical identification time slot reusing mechanism and a logical identification time slot preemption mechanism, the requirements of the power system services for communication properties such as the timeliness and the bandwidth can be met, and therefore the timeliness of delay-sensitive services can be guaranteed on the full load or overload condition of the system.

Multi-service isolation real-time communication system and method for power terminal communication access network

The invention discloses a bus aggregation system based on a 100M network interface, and mainly solves the problems of low data processing rate and high resource occupation ratio of the 100M network interface in the prior art. The system comprises a 100M Ethernet PHY chip, a receiving device and a sending device. The 100M Ethernet PHY chip sends and receives analog/digital signals; the receiving device receives the 10 paths of 100M rate data, transmits and gathers the 10 paths of 100M rate data into one path of 1000M rate data and a flag bit through a time-sharing slot, and sends the gathered one path of 1000M rate data and flag bit to the sending device; the sending device receives one path of 1000M rate data and a flag bit, the one path of 1000M rate data are deconverged into 10 paths of100M rate data through the flag bit, and finally the deconverged 10 paths of 100M rate data are output to the 100M Ethernet PHY chip. According to the invention, the data processing rate of the 100M network interface is improved, the resource occupation ratio is reduced, and the method can be used for data transmission.

Bus aggregation system based on 100M Ethernet interface

The invention provides an optical fiber time division transmission method for Ethernet data Local equipment and a plurality of remote-end optical access equipment are accessed into the network, the Ethernet data is transmitted through optical fibers, and the plurality of remote-end optical access equipment are isolated physically and then collected at the local equipment to achieve data exchange and input and output of service data As the video surveillance service needs to solve the problems of not only remote transmission of a video source but also the video data networking, the Ethernet data is transmitted through the optical fibers by adopting the time division multiplexing technology On one hand, during service data transmission, all access points are physically isolated and then collected on the local side to complete data exchange and the input and the output of service data, and on the other hand, the Ethernet is adopted to be in charge of video service compression, therefore, compared with the non-compression transmission technology, the transmission capability can be improved by about 10 times and the utilization ratio of the optical fibers is greatly improved

Chengzhi Jia

Papers

Optical fiber time division transmission method for Ethernet data