CPE (Customer Premise Equipment) terminal, data stream transmission methods and public and private network switching methods

Abstract

The invention discloses a CPE (Customer Premise Equipment) terminal, data stream transmission methods and public and private network switching methods. The CPE terminal comprises a master control module, a radio frequency transmitting and receiving module and a 4G communication module which supports public network and private network switching. The master control module receives information forwarded by the radio frequency transmitting and receiving module through utilization of the 4G communication module, issues the information to a business terminal, and / or transmits the information sent bythe business terminal to the 4G communication module. The information is forwarded to the radio frequency transmitting and receiving module through utilization of the 4G communication module. The master control module is equipped with an Ethernet interface in communication connection with the business terminal. The 4G communication module is in communication connection with the master control module through utilization of a USB. The master control module is also equipped with a serial port in communication connection with the business terminal. The 4G communication module is in communicationconnection with the master control module through utilization of a UART (Universal Asynchronous Receiver / Transmitter). According to the CPE terminal, the data stream transmission methods and the public and private network switching method, the 4G communication module which supports the public and private network switching is employed, demands of various business data streams for a transmission network can be satisfied, and power wireless private network construction cost is reduced.

Description

technical field [0001] The invention relates to a CPE terminal, a data stream transmission method and a public-private network switching method, and belongs to the technical field of electric power Internet of Things. Background technique [0002] In the field of research on wireless communication technology supporting the Energy Internet, the energy Internet business can be divided into mission-critical control business and large-scale collection business according to the mode of business traffic: [0003] (1) Mission-critical control services have the characteristics of extremely low latency, high burst bandwidth, and centralized downlink control. For example, precise load control requires fast load shedding within an end-to-end latency of less than 50ms to ensure UHV The frequency drop recovery caused by the fault, and the differential protection business requires 20ms or even a very low transmission delay to ensure the precise synchronization of the sampling electrical q...

AI Technical Summary

Problems solved by technology

For mission-critical control services, the use of proprietary protocol design file transfer mechanisms, cryptography-based encryption authentication mechanisms, frequency physical isolation and other technical means has achieved good protection effects, but the security protection for cost-sensitive large-scale collection services needs further improvement. strengthen

[0006] At present, the research and development of gateway equipment dedicated to the power Internet of Things is still in its infancy. Existing products have technical problems such as large size, high cost, inconvenient installation, complicated wiring, and difficult troubleshooting.

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