The progress of the times brings not only the benefits, but also the traffic of the city becomes congested when the car traffic is spread all over the street. As the traffic congestion in the city becomes more and more serious, the introduction of intelligent traffic has attracted the attention of many people because he may be now or An important plan to improve traffic congestion in the future. The concept was also put forward by the Ministry of Transport and local governments. Now Xiaobian will bring you a comprehensive communication solution for Risconda Intelligent Transportation to see how he solves the problem of intelligent transportation network. Intelligent Transportation System (ITS) applies modern information and communication technology, network sensing technology, cloud and mobile computing technology, intelligent terminal and vehicle road coordination technology, intelligent network control and other new high-tech technologies to the entire traffic management system. The company's intelligent communication overall communication solution is dedicated to building a real-time, reliable and robust network for intelligent traffic information collection. It provides a variety of highly reliable, industrial-grade and intelligent solutions for the communication industry communication needs. The traffic communication system can be divided into three parts: the core layer, the aggregation layer and the access layer, as shown in the following figure: (Intelligent Transportation Communication System Network Level) 1.1 Core layer network solution The core layer is located at the top of the network. It is the data exchange hub of the communication system. It completes the data exchange between the front-end devices of each subsystem and the server platforms of the central system, and realizes the functions of connecting with the public security network and other private networks. The ISCOM S9600 and ISCOM S7600 series of high-end intelligent core switches are the three-layer exchange that perfectly carries the central system data. Together with the command center server and the central access switch, they form the command center network. 1.2 Convergence layer network solution The aggregation layer is located in the middle layer of the network and is responsible for the aggregation and transmission of data of each subsystem. Provide high-speed, low-latency, and high-reliability transmission channels for services. This layer of equipment is in the field, and needs to meet requirements such as: high and low temperature resistance, resistance to harsh EMC, high bandwidth, redundancy protection, and high reliability. Resconda industrial grade calipers and rack-mounted aggregation industrial switches provide free optoelectronic port options, thousands of megahertz adaptive, large Buffer, support the industry-leading ITU-T G.8032 ring network protocol, providing stars for the field Various networking modes, such as type, intersecting ring topology, and ring topology, are shown in the following figure: 1.3 Access layer network solution The access layer is located at the lower layer of the network to achieve end access of the communication system. Due to the various interfaces of the intelligent transportation system front-end equipment, different transmission requirements, and complex installation environment, the network access methods are flexible and diverse according to different requirements. Resconda provides wired and wireless-based solutions for front-end service access, depending on the business characteristics and environmental requirements, either one of them or a hybrid backhaul. 1.3.1 Wired Access Solution Program advantages: Support industrial switch, industrial transceiver, industrial iTN intelligent terminal hybrid and unified network management network; The product is oversized Buffer, adapts to all cameras in the industry, and provides adaptive cardless access; Support RS232/RS485 port multi-service access, simplify customer engineering wiring, speed up project progress, and save construction costs; Reduce the number of transceivers in the front-end half compared to traditional transceiver point-to-point backhaul; Zero configuration of the product to achieve separation of construction and operation and maintenance, greatly reducing engineering and operation and maintenance costs; Support remote management of front-end devices, such as device monitoring, configuration management, alarm management, etc. 1.3.2 Wireless Access Solution (4G Access) Some do not have wired communication conditions, or the wiring cost is high, and the 4G wireless router can be used to implement service backhaul. The 4G high-speed wireless network acts as a data bearer network, providing a secure high-speed wireless connection for networking between remote devices and sites. Program advantages: High-rate bandwidth to meet video real-time backhaul; Support connection detection mechanism to ensure that the network is always online; Has a VPN function to support device data transmission in a secure IPSec tunnel; Multiple encryption methods, support AES, TKIP encryption; support 64-bit, 128-bit WEP encryption, the key can be input with HEX or ASCII characters.
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