A method for configuring tdd radio frame for UAV positioning application
A technology of unmanned aerial vehicle and wireless frame, which is applied in wireless communication, separation device of transmission path, signaling distribution, etc. It can solve the problems of long signal wavelength, low positioning accuracy, and weak signal energy in GSM system, so as to reduce deployment The effect of cost, high positioning accuracy and wide bandwidth
Active Publication Date: 2020-09-29
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
[0010] The 2G GSM system signal has relatively long wavelength and strong diffraction ability, so the signal energy reflected by the UAV is weak, which is not conducive to the signal reception of passive radar; moreover, the GSM signal bandwidth is small and the positioning accuracy is not high; in addition, In this system, a dedicated radar is required for reception, and the number of radar stations limits the area that can be positioned
Therefore, the passive radar UAV detection system based on the GSM network base station has the problem of inaccurate positioning
Method used
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[0042] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and examples.
[0043] At present, the commercial TDD (Time Division Duplexing: Time Division Duplexing) cellular network includes 3G TD-SCDMA, 4G TD-LTE, etc., and there are no related documents and reports based on it to realize UAV detection. The TDD cellular network mentioned above has a higher frequency and a larger bandwidth than the GSM signal, and is more suitable as a passive radar signal; and the TDD cellular network can ensure the synchronization of the base stations in the network, which is conducive to the analysis of the detection signal. After the transformation, it can be used as a detection base station without a separate radar receiver.
[0044] The base stations in the TDD network are transformed, and some base stations are appropriately set as...
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The invention discloses a method for configuring TDD radio frames oriented to drone positioning application. The method comprises the steps of according to a set rule, conducting timeslot configuration on special subframes in the radio frames of a source base station, a detection base station and UE served by the detection base station, so that the configured special subframes have a detection section, wherein within the detection section, the source base station is DwPTS, the detection base station is UpPTS, and the UE is GP; within the detection section, using the source base station to senddownlink detection signals, and using the detection base station to receive uplink detection signals, wherein the UE served by the detection base station does not receive or transmit signals; using the UE served by the detection base station and the detection base station to conduct conventional uplink and downlink signal transmission outside the detection section. By means of the method, large-scale drone detection can be achieved while the deploy cost for drone positioning is greatly lowered, the positioning precision is high, and the normal communication services of a TDD cellular networkare not influenced.
Description
technical field [0001] The present application relates to the technical field of UAV positioning, in particular to a method for configuring TDD wireless frames for UAV positioning applications. Background technique [0002] In recent years, the field of drones has developed rapidly, and technological progress has promoted the application of various types of drones in various fields such as aerial photography, surveying and mapping, and logistics. At present, UAVs have achieved a high degree of automation and intelligence. UAVs equipped with a variety of sensors can perform monitoring, reconnaissance and other tasks within a designated range without geographical restrictions. The widespread application of highly intelligent drones also brings security problems, such as affecting aviation order and intruding into sensitive areas. In important places such as government buildings, military and civilian airports, military bases, communication hubs, and large-scale event sites, i...
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IPC IPC(8): H04W72/04H04L5/00
CPCH04L5/0007H04L5/0048H04L5/0053H04W72/0446
Inventor 赵慧王飞龙王文博
Owner BEIJING UNIV OF POSTS & TELECOMM