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Analysis of 3G/4G Wireless Video Surveillance IoT Application

3G wireless video surveillance is the key application direction of the Internet of Things era: video cameras and other sensor devices form the sensing layer of the Internet of Things, collect the basic data of the Internet of Things, and then integrate it into the video application platform through the transmission of the network layer. Other application scenarios (including personal applications, industry applications, public domain applications, etc.), processing, identifying, and applying corresponding data, and automatically and even intelligently processing related transactions and controlling related objects. The IoT strategy of telecom operators will help 3G wireless video surveillance to achieve diversified applications and application levels. The national IoT strategic planning has the following significant effects on promoting 3G wireless video surveillance:

· It is better able to understand the needs of various industries and quickly realize the application of penetration coverage in various industries;

· Break through the small business and personal user market;

· Strengthen the comprehensive application of video surveillance and other technologies to accelerate the upgrade.

· "Video surveillance access mode from wired to wireless is an inevitable trend." Whether it is 3G or wifi, as far as the current market is concerned, wireless is just a supplement to cable. In the automotive environment, temporary site monitoring, emergency command, forest fire prevention and many other inconvenient wiring environments, A large market for mobile monitoring has been built because the traditional wired mode of these environments cannot be solved. With the maturity of the network, in the future, 3G, 4G and many places in the establishment of wireless cities, the prospect of wireless monitoring will be very good, and 3G has a greater advantage in the installation cost. For example, a city needs to do a hundred points. If you use fiber optics, the cost is very high. It may be about 10 million. If you use 3G monitoring, if you use one point for 10,000 calculations, you only need 1 million. If one If the operating cost of the point is 200 yuan, then the operating cost of one year is only 240,000, and a monitoring system can be eliminated in about 5 years. In terms of construction time, a wired monitoring may take a year, and 3G wireless? One hundred points may be installed in one week, and the time cost will be saved a lot, so the final wireless is a trend and operation In the process, there are fewer units to pass, and there is no need to deal with municipal units.

As another key area for the scale of China's Internet of Things industry, 3G wireless video surveillance has already ushered in a period of growth. With the completion of domestic 3G network construction, video surveillance based on 3G network has become a new hot spot in the domestic video surveillance industry. Due to the advantages of flexible deployment and low overall cost, the application field of 3G wireless video surveillance has gradually broken through traditional video surveillance, by traffic, Electricity is expanding to the education, public utilities, SME, family and personal markets.

Market segmentation

With the launch of 3G networks, operators are beginning to consider how to put them into use. Because the network itself is only a channel, only the business can be profitable, but since 3G commercial, market development has been an important proposition for operators.

Dong Baoqing, deputy director of the Informationization Promotion Department of the Ministry of Industry and Information Technology, once said: If 3G is to succeed, the most important thing in the current stage is to vigorously promote 3G-based applications. He believes that advancing 3G applications is no longer a technology-driven problem, but requires two-way technology and business to generate new business models. Without a market application, it is impossible to recover the investment. A good technology does not have a good business model, and the market will die out. 3G should not be limited to the personal consumer market. Its industry application is not a large-scale replication, but a specific business model should be generated in each market segment. Therefore, the market segment is not only a new blue ocean for the future development of communication operators, but also A long-term market with considerable revenue.

advantage analysis

3G wireless video surveillance has a wide range of applications in the following scenarios:

· Wired networks cannot be reached, or where the price of wired networks is too expensive: such as high-voltage lines, highways, environmental monitoring, forest fire prevention, street lighting, oil extraction, oil pipelines, logistics, transportation vessels, flood prevention and rescue;

· Locations that are inaccessible to personnel: dangerous places such as inflammable and explosive, infectious areas, and other microbial danger areas;

· Relatively unfixed monitored places, temporary wiring will be a waste of cost: public security investigation temporary deployment, force field training, temporary construction sites, temporary activities, convention and exhibition centers.

The advantages of 3G wireless video surveillance are mainly reflected in the following aspects:

· Wide coverage: mobile phone wireless network coverage is extremely high, almost no restrictions on complex terrain and areas such as mountains, rivers, bridges and roads;

Convenient deployment: Wireless video surveillance systems can be deployed almost anywhere outside, including water, rugged terrain, and remote locations. The front-end encoder or network camera, or even the mobile phone, adopts the wireless access method, and only needs to be covered by the mobile network, so that the monitoring point can be conveniently and easily constructed, and the wiring caused by complicated terrain is cumbersome and troublesome;

High data throughput: Considering the future development of WIFI and 3G technologies, wireless network transmission bandwidth can be as high as 6Mbps~200Mbps;

High reliability: The reliability of high-end wireless transmission systems is up to 99.999% carrier-class reliability, enabling uninterrupted and secure transmission;

· Low cost: eliminating the high cost caused by long-distance network cabling;

· Convenient monitoring: wireless video surveillance can be carried out by mobile phone anytime and anywhere, not limited to a computer with pre-installed monitoring client;

· Diversified services: Wireless video surveillance can cover not only all fixed network monitoring services, but also various mobile services, such as mobile law enforcement monitoring and mobile interviewing.

Difficulties

Similar to 2.5G, although 3G has already been applied to wireless video surveillance, there are still some problems in the transmission of video streams with a large amount of data:

The bandwidth and frequency resources of the wireless network are more limited, and the bandwidth that can be achieved is much lower than that of the wired network: since the effective bandwidth of a single terminal of the public mobile communication network is rather limited, it is often necessary to simultaneously carry voice, data and other transmission services. Even if the current 3G network is used to transmit CIF images, a base station cannot exceed 3 monitoring points, and the characteristic of wireless broadband is the uncertainty of bandwidth during transmission. At present, the speed of 3G network can reach 1M, and the speed is only tens. K, therefore only as a means of auxiliary transmission;

· The error rate of the wireless channel is relatively high: especially when the terminal device is in the mobile state, the available bandwidth and the error rate index are greatly reduced, the available bandwidth often fluctuates, and the high-bandwidth video monitoring data is prone to packet loss. Reliability is not high;

· The cost of wireless transmission is much higher than that of wired transmission: Generally speaking, the cost performance of wired transmission is higher than that of wireless transmission, especially for broadband transmission. The operating cost of the 3G wireless video surveillance system includes the broadband Internet access fee of the video source, the mobile phone viewing traffic fee, and the monitoring system operation fee. The total operating cost is high and it is difficult to reduce;

• The public communication system sharing channel resources may cause intolerable delays or even blocking problems when local load surge occurs in an emergency situation.

Business application development

A single business function may be a problem that every emerging market must face, and it must also be a problem that must be solved. The richness of business functions is a tool to promote the development of 3G wireless video surveillance. Japan and Hong Kong are the regions that introduced 3G earlier. They have rich and colorful applications for 3G networks, such as high-definition video, traffic condition monitoring, real-time navigation, Online shopping, online games, mobile wallets, online video playback, live TV, etc. Through the enrichment of business functions, it expands the choice of mobile phone users, and indirectly attracts users' interest in 3G services, which helps to develop potential needs.

Compared with the more mature regions of 3G services, the domestic 3G wireless video surveillance service functions are still very thin. Although in the 3G wireless video surveillance, the mobile terminal is no longer just a browsing tool, but can carry out more control and platform operations. However, as far as the current situation is concerned, video browsing is still the most used function due to lack of processing power and system maturity.

In the past two years, more technologies and functions will be applied and embodied in 3G wireless video surveillance products, including voice transmission, video capture, mobile information processing, multi-system convergence, and richer intelligent control functions. The application is much larger than the current imagination, and it is far more vital than simple surveillance video playback. As the business matures, how to continue to innovate will be a decisive factor in how fast and wide the market can develop. It is important for operators to drive the market. 3G wireless video surveillance is a new topic, and operators need more operational mechanisms to protect them.

3G wireless video surveillance can win with its mobility and network coverage. Its main application areas should include several aspects:

· Industry-specific user services: such as security management, road management for traffic, urban management, ambulances, etc., where mobile video surveillance is required, mainly for wireless video capture and mobile video viewing. Technically speaking, only 3G wireless transmission can meet the above high requirements. The deep integration of 3G wireless video surveillance and specific industries will become an inevitable trend in the development of mobile video surveillance market;

· Special environmental occasion monitoring business: such as forest fire prevention, oil field, field substation monitoring and other industrial applications with special environment. In these areas, the geographical area is wide and the users are sparse, and the outdoor erection and maintenance cost of the wireline is very high, so 3G wireless video surveillance can exert its important application value;

·Security mobile monitoring service for public transport: meet the video surveillance needs of various vehicles in the process of moving, suitable for financial transport trucks, public security police vehicles, urban management vehicles, emergency rescue vehicles, freight vehicles, long-distance buses, rental Various types of vehicles such as cars, subways, railways or ships.

Operating model seeks change

It is understood that the current 3G wireless video surveillance is mainly based on the fixed network monitoring based on the mobile phone application overlay, after the user purchases or the mobile phone terminal provided by the operator, the video browsing and control can be realized by installing the corresponding plug-in. In general, the front-end equipment and the central server are still responsible for the procurement and construction by the operator, and the operator provides services to the users after purchasing the platform from the platform vendor.

In terms of fees, the charging mechanism for 3G wireless video surveillance is not clear. According to the operator, due to the great importance of mobile video surveillance, the cost will also be considered for large discounts. Depending on the situation, it should be subject to additional functional fees or monthly subscriptions. For example, the operator charges a tens of dollars in functional fees, and the subsequent traffic charges are calculated on a time basis, and the traffic charges are relatively low. Compared with the previous fixed network monitoring, the cost has not increased, but may be reduced.

Some people think that in the current stage where the 3G network is still immature, such an operation model draws on the advantages of fixed-line monitoring, and it is very familiar and very good. The voice of opposition is that 3G has its own characteristics and advantages, and the operating model should be more novel. Flexible, in order to achieve the full advantage of 3G advantages.

development trend

While public mobile communications continue to grow rapidly and mobile communication networks are evolving to 3G, new broadband wireless access technologies such as WiFi, WiMAX, and WBMA and short-range wireless technologies have emerged and matured, and the development of wireless communication industry has diversified. A new pattern of complementary advantages. With the continuous development of communication technology and the gradual evolution of the network, 3G and various broadband wireless access technologies and short-range wireless technologies are in a state of convergence and development, which will become a broader space for future mobile surveillance applications.

With the maturity of 3G networks, the integration of triple play, the implementation of M2M strategy, and the deployment of wireless cities, the future telecom operation-level video surveillance platform will adopt unified media formats and control signaling to support cloud platform deployment and virtual storage. Fully compatible with carrier-class operational network management. Video surveillance will serve as a sub-product package for operators' unified services, and will enter the market of users and households in the government, enterprises and other industries in different business models. 3G wireless video surveillance will become a convenient and convenient application that is increasingly familiar to the industry and mass users.

However, just like the development of network video surveillance in previous years, the development of 3G technology does not mean that the wireless video surveillance market will be widely used in one or two years. On the contrary, this first few years is precisely the painful period of the wireless surveillance market. Regardless of the maturity of technology application, the improvement of the network (including the construction of a network based on the combination of fixed and wireless technologies), the change of consumer attitudes, the transformation of business models, etc., the maturity of the entire market will take some time. During this time, the market and technology will complete the integration of upstream and downstream manufacturers such as chip and device manufacturers, monitoring equipment manufacturers, monitoring application platform developers, distributors and system integrators, end customers and operation and maintenance service providers. 3G wireless video surveillance solution providers will bind their respective security vendors, provide final solutions based on network construction, and continuously optimize existing products and enrich the entire product line; operators will also build and improve their own networks. Fierce competition with the use of: starting from the erection of the base station, signal coverage and tariff services to capture more markets.

It is worth noting that 3G currently mainly uses CDMA technology as its core technology, but its data transmission speed is far less than the 2Mbps claimed in the advertisement. The actual transmission speed is only about 0.4Mbps, and this may be even when the network is busy. One third of a speed can't be reached. This condition is only sufficient to transmit high quality audio, and it is difficult to transmit high quality video. Moreover, in order to combat multipath interference, CDMA technology requires more complicated equalization and modulation, which is very difficult to implement.

In the process of 3G to 4G, it can be said that the maturity of a market is complex and subtle, but this trend will be beyond doubt. In the process of 3G to 4G, the spring of wireless video surveillance is still very worth looking forward to.