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Integrate positioning technology to deal with the application of IoT fragmentation scenarios

At present, whether we are in an indoor or outdoor environment, the demand for positioning is not only a rough trajectory and navigation. In this era of Internet of Everything, we urgently need to be able to quickly and accurately obtain the location information of mobile interruptions.

As mentioned above, with the improvement and popularization of communication technologies such as Bluetooth, WiFi, 5G, and UWB, high-precision positioning is no longer empty talk, but just as no communication technology can adapt to all IoT application environments, there is no positioning. Technology can meet all positioning scenarios. In pursuit of better performance and better cost performance, integrated positioning technology solutions have gradually become an industry trend

The Bluetooth AOA technology has a better positioning effect in a small area, while the UWB advantage lies in large or even super large area scenes. After the combination of the two, the confidence and reliability of the positioning result will be improved, which makes up for the poor anti-occlusion ability of a single UWB system. It has the disadvantage of large data jump, and solves the error problem caused by terminal height in a single AOA positioning system. Application areas can cover prisons, hospitals, nursing homes and other industries.

UWB and Bluetooth AOA can be said to be the two most popular high-precision positioning technologies in the market. They have their own advantages and disadvantages. If only one of them is used, it will inevitably have certain limitations. Therefore, the combination of UWB and Bluetooth When the advantages of AOA technology are combined, it will be a brand new idea.

The arrival of the 5G era has allowed operators to see the value of combining indoor positioning technology with 5G. They will integrate the deployment of positioning base stations and communication base stations, and begin to prepare to build a "5G communication + precise location" network. The Midea Company in Shunde District, Foshan City cooperated with China Unicom to carry out the construction of the "5G + Industrial Internet of Things" project, realizing the application of precise dynamic operation scenarios. It is expected that this technology will have broad market prospects in the future.

High-precision positioning is an important direction of 5G network evolution, which integrates communication perception efficiently. With the continuous evolution and enhancement of 5G-Advanced, 5G positioning will have the advantages of centimeter-level accuracy, low module power consumption, low network cost, and shared network operation and maintenance.

iBeacon is a low energy bluetooth technology, its working principle: a device equipped with low energy bluetooth (BLE) communication function uses the BLE technology to send its own unique ID to the surrounding, and the application software that receives the ID will adopt the ID according to the some action. For example, if an iBeacon communication module is set up in a shopping mall, the server will send relevant discount information to customers through the APP or WeChat public account. The emergence of this function has provided better service forms for many businesses, such as intelligent guides in exhibition halls, positioning monitoring in nursing homes, and on-site inspections of events and competitions.

Bluetooth AOA + iBeacon fusion positioning supports the integration of positioning technologies such as Bluetooth, AOA, and satellite positioning, which can provide high-precision indoor and outdoor integrated positioning and realize dynamic navigation.

Bluetooth mesh + high-precision fusion positioning

The Bluetooth smart light sends out a message containing the positioning content according to the Bluetooth protocol to form a positioning information transmitting base station; the smart mobile terminal receives the message containing the positioning content published by the Bluetooth smart light and determines and displays the precise location of the smart mobile terminal. The system uses lamps as the carrier and uses decentralized Mesh communication technology to construct a high-precision and low-cost indoor wireless network.

Different positioning areas can choose different positioning accuracy according to different needs of users and cost constraints, and can continue to adjust after the project is implemented without affecting the deployed system.

The system takes magnetic field positioning as the core, and the magnetic field characteristics are generated by the geomagnetic field and building structure, which vary non-uniformly with the spatial position and are stable with time. The positioning terminal product has inertial positioning, magnetic field positioning and fusion algorithms, and settles the user's position information by acquiring data such as magnetic field, acceleration, angular velocity, and Bluetooth signal strength.

Bluetooth direction finding has emerged as a low-cost, low-power solution for location services. The accuracy of the Bluetooth AOA solution can reach sub-meter level.

The use of 5G positioning can meet the positioning needs of occluded areas, while Beidou positioning technology is suitable for positioning needs in open areas. 5G + Beidou integrated positioning technology can jointly form a seamless indoor and outdoor positioning system to meet the needs of positioning applications in all scenarios, and can effectively solve the problem that satellite navigation signals are difficult to cover or have high-precision indoor positioning.

The 5G system has the characteristics of large bandwidth, dense networking and multiple antennas, and has the ability to achieve high-precision positioning under indoor/blocked conditions. Positioning technology has broad application scenarios and is of great significance to the realization of future intelligent networks. Of course, this is also a test for the construction planning of the 5G positioning system.

There is no absolute advantage or disadvantage of technology. There are many factors to be considered, such as accuracy, capacity, cost, and dynamics. We cannot deny it completely because of a little functional disadvantage. A technology needs to be used in a specific application scenario to truly reflect its value.
2 Weeks Ago #1
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