According to a series of key skills such as 5G communication network wireless virtual grid differential positioning, common frequency band integrated measurement method (TC-OFMD), complete communication can accurately locate, communication navigation, Suzhou New Navigation has the existing base station accuracy from tens of meters to 5 Centimeters, using communication networks and mobile terminal positioning accuracy can reach sub-meter level.

According to a series of key skills such as 5G communication network wireless virtual grid differential positioning, common frequency band integrated measurement method (TC-OFMD), complete communication can accurately locate, communication navigation, Suzhou New Navigation has the existing base station accuracy from tens of meters to 5 Centimeters, using communication networks and mobile terminal positioning accuracy can reach sub-meter level. This skill has become the third internationally leading positioning skill in the world, in addition to in-band positioning and bilateral in-band positioning. First of all, it completed the meter-level high-precision seamless indoor positioning and navigation on the surface of the satellite-ground integration room.

Indoor Positioning

Shopping malls, hospitals, intelligent transportation, public processing and other occupations urgently need real-time behavior guidance, location data, and precision marketing for indoor users. For example, large hospitals are cluttered with signs one after the other, but still struggling to find a certain department! Special patients (psychiatric patients, demented patients, etc.) need special care, and accidents are prone to safety risks; major hospitals have limited medical equipment and equipment, and it is very inconvenient to search for equipment in various departments.

If indoor positioning skills are used, patients entering the hospital can use their mobile phones for indoor medical guidance, such as accompanied guidance by a special person; special patients only need 24-hour monitoring (bracelets, chest plates, etc.), and check the real-time position and movement track at any time to prevent germination; Suzhou New The guide can view the specific location, usage data and other information in real time from the background to improve processing efficiency.

Are indoor positioning skills mature?

As far as the current use of shopping malls is concerned, BC547BRL1 Suzhou New Navigation has achieved a key breakthrough in high precision, wide coverage and low cost through a series of key skills integrated in navigation, and can complete wide-area meter-level positioning and navigation, and is widely used. In the fields of public safety, emergency rescue, Internet of Things, venue processing, etc., the mass use of indoor positioning still needs to further develop shopping malls.

What new breakthroughs does 5G bring to indoor positioning?

4G positioning is mainly satellite positioning, which lacks the organic and deep integration of various positioning skills. It can only deal with problems such as positioning accuracy or application scope, and lacks a comprehensive, systematic, and hierarchical integrated positioning skills architecture. 5G key skills include coding methods, beam shapes, large antenna arrays, ultra-dense networks, millimeter wave spectrum, etc. The large bandwidth is conducive to parameter estimation. The introduction of large-scale antenna skills allows the base station to assemble 128 antenna units, providing a basis for high-precision distance measurement The wireless frequency is relatively high compared to 4G, the permeability is poor, the density of base stations is significantly improved, and user signals can receive multiple base stations, which is conducive to the cooperation of multiple base stations to complete high-precision positioning and provides better conditions for indoor positioning.

Fusion positioning is the main trend of 5G high-precision positioning, and the overall improvement of positioning performance is achieved within the positioning accuracy and coverage. 5G is destined to be used in high-end usage scenarios, with the advantages of high bandwidth, low latency, wide coverage, and high capacity. The theoretical drop speed of 5G network can reach 10GB/s. 5G is needed for indoor positioning, is Gao Fushuai? The answer is yes! 5G can complete the three-dimensional positioning of a single base station by obtaining the signal transmission time between the mobile phone and the base station and the positioning of the mobile phone relative to the base station, that is, 5G can support TOF positioning and AOA positioning.

In terms of accuracy, the large bandwidth characteristics of 5G effectively make up for the 1-3 meter positioning accuracy gap between UWB and existing narrowband positioning technologies such as Bluetooth.

In contrast, 5G indoor positioning skills have four advantages:

Positioning skills are supported.

There are many sensors connected.

High-speed data transmission with low latency.

Provide cloud layout capabilities to save layout costs.

In fact, the positioning of cellular technology is traceable from 1G to 4G, but it is not widely used due to its low positioning accuracy. For example, in the 4G era, due to the low coverage density of base stations, the error is as high as 100 meters to several kilometers. It can be seen that the greater the number of base stations, the higher the density and the higher the positioning accuracy. Compared with 4G, the coverage of 5G base stations is more dense, and street lights, streets and office buildings may cover 5G antennas, so 5G will complete a dense network, and user signals can be received by multiple base stations together, which is conducive to the cooperation of multiple base stations to achieve high precision. position.

At present, 5G indoor positioning skills are still in the discussion stage. In 2019, Deng Zhongliang's team from Beijing University of Posts and Telecommunications cooperated with Tianjin Binhai Unicom to complete the indoor hybrid intelligent positioning test of 5G-oriented integration. The skills of this project are based on a series of key skills such as 5G communication network wireless virtual grid difference positioning, common frequency band integrated measurement method (TC-OFDM), etc., to complete the precise positioning of communication, and shorten the distance accuracy of existing base stations from tens of meters to 5 centimeters. The positioning accuracy of communication networks and mobile terminals can reach sub-meter level.