As the continued growing of China's economy, people's living standards continue to increase, the city's car ownership has risen sharply, the city's open roadside parking management is also more and more difficult. If the roadside parking could be efficient and reasonable managed, we would be able to effectively alleviate the difficult parking problems. The current roadside parking management generalized as the following:

The first generation Manual management
Completely dependent on people to do the opening roadside parking management. Facing the following questions:
1. Charges management confusion: arbitrary charges, inaccuracy billing, more disputes for charges, more fraudulent operations for fees chargers, faking charges for arbitrary charges;
2. Low efficiency management: with the limited charging management area, the charges are difficult to monitor, the arrears cannot be recovered;
3. Operational management manpower cost is high;
4. Long time working for fee chargers, with low wages, lack of attraction and rapid staff flowing.

The second generation Parking Meter management
To take "meter" time card charging fees, relying on the owners themselves in the meter to complete the timing and payment. Compared to the manual management of the first generation, it reduced the problem of confusion in charge management and labor costs, but due to the entire dependment on the owners of autonomy, so it has to face with the problems like, the owner to escape, charges difficult to monitor; equipment maintenance, high operating costs and searching for free on-street parking spaces and others.

The third generation Traditional wireless intelligent parking management
Parking spaces on the ground to install the vehicle detector,using the two-hop technology to send the vehicle occupancy information to the operator's wireless network (Vvehicle detectors through Zigbee and other short-distance transmission technology to send the information to the convergence gateway, and then the convergence gateway through the 2G / 3G network for reporting) and then through the parking management platform for intelligent management. Owners can be through the mobile phone APP, easy access to the surrounding roadside free parking spaces, self-help to complete the query and payment; owners can pass the parking management platform for real-time management of the parking system, if necessary, but also can dock the government traffic management, to facilitate urban parking illegal management. Compared to the previous two generations, greatly enhancing the degree of intelligence. But the disadvantage is that wireless communication using non-authorized frequency band, private wireless LAN, having signal interference problem, with the poor network security, which may lead to billing information are inaccuracy; due to the limited convergent gateway coverage, usually a convergence gateway can only manage 10 to 15 parking spaces, with low efficiency and higher equipment costs and deployment costs; different intelligent parking equipment manufacturers use private wireless short-range communication technology, which cannot be compatible.

The fourth generation NB-IoT intelligent parking management
The vehicle detector using the NB-IoT technology directly will report the information to the operator's wireless network, eliminating the need for converging the gateway. NB-IoT is an innovative narrowband networking technology based on cellular networks, focusing on the low-power wide-coverage (IWA) market, which is widely used in 3GPP communication standard technology worldwide, also is one of the key technology for 4.5G. Compared to the current widely used 2G / 3G / 4G and other wireless technologies, it has a wide coverage (20db gain), more connecting (100,000 links), low cost (module for 5 dollars below), less power (battery for 10 years ) and other characteristics. These advantages make it very suitable for intelligent parking, intelligent meter reading, intelligent monitoring, logistics tracking, intelligent agriculture and other things networking applications. Compared to the roadside parking management of the third generation, NB-IoT provided carrier-level network security and greatly improved the reliability and security; reducing the convergence of the deployment of the gateway, the overall cost (equipment costs, deployment costs, maintenance costs) decreased by about 30%; plug and play for vehicle detector, installation and construction is simple, without the need for network technical support, simple follow-up smart parking capacity expansion, without the need to consider the network compatibility issues, and then it can provide a unified Intelligent parking service through a unified mobile APP and parking management data platform for urban residents.

As the city's 20,000 on-street parking spaces for example, the entire city uses NB-IoT intelligent parking management, the used NB-IoT intelligent parking management system compared to the roadside parking management of the third generation, which can reduce the 660 converged gateway, saving aggregation gateway equipment and deployment costs of about 5 million, and an annual savings of 500,000 for maintenance costs. Through the mobile phone APP, it can provide roadside parking spaces inqury for car owners, parking spaces navigation, can effectively help owners quickly find empty parking spaces, saving owners time and inefficient fuel consumption, while improving roadside parking turnover rate, easing road congestion and reducing emissions, bring both economic value and social value. In addition, the mobile phone APP also provides reserving function for roadside parking, through the appropriate reserving fee, it can increase the income for the road vehicle owners, taking a parking space income of 10 yuan a day fee for example, 20,000 parking spaces can earn more than 73 million yuan one year. Owners can also be completed through the mobile phone APP parking fees and inquiries, be more convenient and rapid, to reduce the charges dispute. At the same time to provide through the parking management system and the owner of the management of APP for the owners, parking administrators can check the real-time parking spaces and payment situation, effectively expanding the management of the parking administrator, thereby saving staff costs, 20,000 parking spaces originally need 400 parking fee chargers, which is expected to reduce roadside parking management manpower by 80% throgh it and can save 9.6 million manpower per year; but also it can solve the inaccuracy charging, arbitrary charges, difficultly monitoring for charges and faking chargers for fees charging and other charging issues, which is expected to save the original loss of 73 million yuan (one parking spaces for 10 yuan loss a day). At the same time, through the parking management system, the management of the owners can analyze parking fees and occupancy situation, to provide data support for scientific management monitoring and time sharing charge. In addition, the NB-IoT open-circuit parking management system and the government's traffic management system docking, you can set up parking spaces to guide the parking spaces, effectively easing the traffic congestion; for the unpaid parking spaces, to inform the traffic police in a timely manner to carry out illegal handling, an effective solution to slove the phenomenon of disorderly parking and escaping.

Therefore, NB-IoT intelligent parking management is the best opening roadside intelligent parking solutions, which be able to scientifically and efficiently slove the problems for urban roadside parking management. NB-IoT technology provides the network based on the operators, greatly improving the reliability and security; providing ubiquitous coverage, it can install the vehicle detector mobile phone in the place whether the signal be good or not; Vehicle detector with plug and play method, follow-up intelligent parking capacity expansion is simple and convenient; compared to existing 2/3 / 4G and other wireless technology, the cost is low for the power consumption and the chip. These advantages of NB-IoT technology will greatly facilitate the opening roadside parking intelligent process. It is foreseeable that, as China's urban road parking management being more and more difficult, the efficient intelligent requirements are getting higher and higher, and NB-IoT intelligent parking management system is about to enter the outbreak period from this year.