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First, 3G security, new vitality in the field of monitoring 3G and security video technology integration point
3G can provide rapid deployable, mobile, and high-speed data transmission services for security systems; wireless monitoring of video surveillance is an important link between 3G and security systems. Since 3G's main feature lies in its ability to provide convenient, mobile high-speed data communications services, 3G provides primarily deployable, mobile, high-speed data transmission services for security systems. In security systems, only image information is available. The transmission requires higher bandwidth support, that is, the combination of 3G and security systems is the wireless transmission of surveillance video.
Before 3G network services, the transmission of long-distance security monitoring systems was mainly wired transmission, including point-to-point fiber transmission and wired network transmission. In some of the existing network access points, it was not possible to apply line lines or laying lines. The cost was too high. On the project site, most of them are point-to-point or point-to-multipoint microwave transmission technologies. The transmission distance can reach several tens of kilometers. The construction period is long, the construction cost and the maintenance cost of the later period are very high. It is a helpless choice. There is no real practical solution for receiving video image information on the move.
The 3G network and its terminal modules solve the problem of transmission in two aspects of the security system: one is the transmission problem of video information from the image acquisition end to the central station, that is, the image “uploads†using the uplink data channel of the 3G network; The transmission problem of the video information from the central station to the user (client), that is, the image “downlinkâ€, utilizes the downlink data channel of the 3G network.
Security System Combined with Basic Application of 3G Network 1. Wireless Upload of Fixed Monitoring Image
For some remote monitoring sites, 3G terminal modules can be directly used, and the monitoring images on the site can be transmitted to the monitoring center via a 3G network. The construction cost of the transmission system is extremely low (only one 3G terminal module is required), and no commitment is required. The system maintenance fee only requires the operator to pay the communication fee during the use period. If the scale is large, the operator can also obtain a cheaper communication tariff policy.
If it can truly achieve the 1.8Mbps uplink bandwidth claimed by the operators, if H.264 video encoding protocol is adopted, it can transmit a 1.3-megapixel (720P) high-definition surveillance image with a video frame rate of 15 frames per second or more. Can meet the needs of on-site monitoring. At present, many domestic manufacturers have introduced video encoders and network camera products that embed 3G terminal modules and support the 3GPP protocol.
2. Wireless uploading of mobile surveillance images
Public security, urban management and other government departments as well as electric power, petroleum and other industries all have vehicles used for on-site disposal and inspection. It is necessary to upload the on-site monitoring image to the monitoring center station for remote command and dispatch in real time, which can be satisfactorily fulfilled through 3G wireless networks. This demand, many manufacturers have launched a car hard disk recorder, is a set of local video and image remote wireless upload in one of the 3G video surveillance equipment, many public security agencies have also been equipped with police in command of the vehicle.
3, monitoring images released to mobile clients
In a monitoring system based on a fixed network, users can only monitor images through a computer at a fixed location, but cannot monitor them anytime and anywhere. With the help of 3G networks, users can view surveillance images at any time through wireless Internet access laptops or 3G smart phones.
3G Infuses Innovation "Vibration" for the Development of Security Video Technology
On the level of hardware devices alone, the 3G terminal module is merely embedded in the original hardware device, not to mention any technical innovation. The technical innovation of security video technology on the 3G platform is mainly reflected in the software level, especially the platform software that supports 3G mobile video surveillance.
There are generally two implementation methods for browsing surveillance images through 3G smart phones: First, mobile phones directly access digital video encoding devices that support the 3GPP protocol, and client software needs to be installed on mobile phones. However, due to different device protocols, it is difficult to be compatible at the same time. Manufacturers' equipment; the other is to provide services to mobile phone users through the platform, and the mobile phone monitors the images by accessing the platform server. This requires technological innovation in the development of network video monitoring platforms to mask the differences in equipment from different manufacturers in the system. Provides unified and standard video surveillance services for mobile phone users, including unified coding services, streaming media forwarding services, and unified control services.
Second, those words that 3G and security are facing
Although the combination of 3G and security is a new and powerful attempt, operators are still struggling to promote 3G networks. It is even more skeptical that 3G security, which was once entrusted with by the public, could have had a lot of experience. Not long ago, Beijing Mr. Tie Xia Xia, General Manager of Huanyu Feiyang Co., Ltd. once said that whether it is from the point of view of the dealers or the end-users, the demand for mobile phone monitoring will become more and more obvious. So, is this really the case? ?
It should be said that 3G security is two concepts, one is 3G, one is security, security is mainly the traditional security field, 3G is the concept of communication, 3G security is the combination of communication technology and security technology, 3G security points For two parts, the first part is through wireless 3G video upload, and the second part is through 3G mobile client for video.
One of them: 3G network speed
The basis of the combination of 3G and security is the 3G network. Traditional security is moving toward digitalization. However, in places where wiring is not convenient, security has also begun to strongly urge the emergence of wireless products, and wireless security is ready to emerge. The commercial trial of 3G networks is like nectar, which has brought a dawn to the wireless industry in the security industry. However, today's 3G networks are far from the bandwidth standards required for video uploading.
“The bandwidth of 3G network is not stable. In the open area, the signal is still unsatisfactory. If there are many high-rise buildings in the city, the 3G signal makes people worry.†The current 3G network construction area is a city with a large signal impact. The areas where 3G application requirements are most urgent are cities with large signal impacts. In the face of such embarrassment, security companies must have laughed.
The second one: High threshold for 3G tariff
For some large-scale projects, such as Safe City, it is inconvenient to set up monitoring points in some remote areas. However, the use of 3G networks for wireless surveillance deployment is simple and convenient. In this case, it is more convenient than remote routing and manual operation. The cost of maintenance, 3G tariff does not exist expensive.
However, at present, security companies are more directed at civilian monitoring. For individual users, for the current Unicom 3G tariff with the best signal, China Unicom's basic package with a minimum price of 66 yuan can use a flow rate of 300M. We use the mobile phone to watch video speeds. When the network speed is 50 kbps, the video gives a feeling of a bit of card. If you watch the video for 10 minutes in this case, you can figure out that the consumed traffic is about 30M. The fee is 9 yuan. Further calculations, if we use the phone to watch a movie online (calculated in 120 minutes), it will consume 360M of traffic, equivalent to about RMB 108 yuan. Such a depressing viewing effect, such a high flow rate, would like more people to choose to go to the cinema to see a cool 3D blockbuster, but also to exchange emotions with male and female friends while popping popcorn.
The third one: Non-first requirement of mobile phone monitoring
For most users who use 3G mobile phones, what they need more is to use their mobile phones for real-time watching movies, games or office mail. It can be said that there are very few consumers who have mobile phone monitoring as their main demand. The Yang boss of the stolen jewelry shop in Nanjing has this demand, but for the majority of consumers, this is only a non-required item in many additional options for 3G applications.
While security awareness has not yet blossomed in the minds of users, mobile monitoring must be and must be an add-on project that is likely to be popularized and applied among users. Of course, this precondition must also be that the 3G tariff is reduced to A price that the vast majority of consumers can accept.
The fourth: the standard into the threshold
For 3G security, there is no doubt that the three major operators play a very important role in the inside, and even a guiding role. The current application of 3G security, such as the global eye business, is also the cooperation between operators and security vendors. In other words, for the 3G security industry, the standard, openness and compatibility of the platform are required.
However, what we are seeing today is that the product standards of the security industry are not comprehensive and the laws are not complete. The products of different manufacturers have different standards and are incompatible with each other, and the communications industry requires the entire process and the entire network to be open. The openness of the platform is unmatched by the security industry. The application of 3G security is based on the communication industry platform. Naturally, it is inseparable from the requirements for platform standardization, openness, and compatibility. Therefore, how to break the incompatibility of private standards of security products and realize large-scale promotion has become a major issue.
Although there are currently two mainstream standards organizations, ONVIF and PSIA, in the security industry, in the final analysis, this is only a standard that security companies spontaneously initiated. There is no standard system, and security should be seamless with 3G. I am afraid it is a bit difficult.
Third, the current 3G and security video technology integration problems
The problems with the convergence of 3G and security are mainly the coverage of 3G networks, network quality, and network bandwidth. Since the time for 3G networks to be put into operation is still relatively short, the coverage of the network is mainly concentrated in large and medium-sized cities, mainly in the central and eastern cities. Some remote areas that need to use 3G networks have not yet fully covered, which limits the application of these areas; the system is stable. Sex is still relatively poor, and network interruption often occurs, which affects user's confidence. The network bandwidth is still far from the theoretical design index, and only the bandwidth of hundreds of K can't meet the requirements for real-time transmission of higher-definition images. Therefore, the combined application of 3G and security systems will take a long time, depending on the construction process of the 3G network.
Fourth, the future development trend of security monitoring market
Because 3G networks can solve the long-distance transmission of video images, which is a major obstacle to the construction of security systems, the security monitoring market will have a leap forward, and the cost of installing and deploying a remote monitoring point will be greatly reduced. The installation process will also be very simple. Monitoring projects that need to be monitored but cannot be implemented due to cost and difficulty of installation will be launched one after another, which will greatly stimulate the market demand for deposition.
V. Conclusion
Some time ago, several Internet giants including Ali, Baidu, Qihoo and others competed to develop their own smart phones, in order to gain a share in the field of mobile Internet. It can be seen that the future potential of 3G technology. Technical problems can be overcome. The editor of China Security Exhibition Network believes that in the near future, 3G mobile surveillance will be more convenient for the security industry and popularize in the security market.
Background Links: 3G Networks and Their Development Status
3G is the third generation mobile communication (technical) network, which is relative to the first generation of analog mobile communication (analogue cellular) and second generation digital mobile communication (digital cellular). The former two generations of mobile communication networks can only provide Voice services, while 3G can not only provide voice services, but also provide high-speed data services, can be easily integrated with Internet services, and provide users with mobile, high-bandwidth and convenient network information services. For example, China Telecom claims that its upstream bandwidth can reach 3.1Mbps and downlink bandwidth can reach 1.8Mbps. Therefore, its mobile and high-bandwidth data communication services are the main selling points of 3G mobile communication networks. Previously, China Mobile and China Unicom have also launched mobile communications services such as China Mobile's GPRS and China Unicom's CDMA-1X service. However, due to the low communication speed, it can only be used as a transition from 2G to 3G services, which is called 2.5G.
Since January 7, 2009, after the Ministry of Industry and Information Technology officially issued 3G operating licenses to major telecommunications operators in China, operators quickly deployed and gradually began commercial operations. So far, China Telecom's CDMA2000, China Unicom's WCDMA and China Mobile's TD-SCDMA mobile communications network have been officially put into operation in major cities across the country, marking China's 1/5 population of China officially entering the 3G era of mobile communications.
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China Security Exhibition Reuters now smart phones, there is a domineering name, called "mobile Internet." Experts predict that the future will lead people to live and work not with the Internet, but with mobile networking! Mobile Internet enables people to send and receive information and search information at any time and anywhere, breaking the boundaries of time and space. The combination of 3G technology and security industry will surely realize monitoring anytime, anywhere, bring new technologies to security, and increase the reliability of security monitoring. At the same time, in the practice of new things, things will be indispensable.