Bidirectional narrow beam wireless access method based on mobile platform

Abstract

The invention belongs to the technical field of wireless communication, and discloses a two-way narrow beam wireless access method based on a moving platform, which comprises the following steps that: the moving platform judges whether the moving platform is a transmitting platform or a receiving platform, and then the transmitting platform starts slow beam scanning and transmits a signal; and the receiving platform starts fast beam scanning to realize signal access. A bidirectional scanning and searching mode is adopted, searching is divided into a fast mode and a slow mode, a transmitting platform scans according to the slow mode, a receiving platform scans according to the fast mode, 360-degree scanning is achieved in the fast mode within the switching time of the slow mode, and therefore it is guaranteed that access can be achieved within the 360-degree scanning time of the slow mode; therefore, rapid narrow beam access can be realized between mobile platforms with unknown positions.

Description

Technical Field

[0001] The invention belongs to the technical field of wireless communications and relates to a bidirectional narrow beam wireless access method based on a moving platform. Background Art

[0002] The application of narrow beam in the field of wireless communication is that it can effectively overcome multipath and channel interference, and has good concealment ability while improving communication quality. Narrow beam has a small coverage range and is suitable for installation on a stationary platform. Since the position of the stationary platform is known and cannot be moved, the narrow beam direction can be calculated based on the known position. When the antenna is installed, communication can be achieved as long as it is pointed in the known direction. Figure 1 shown.

[0003] When installing narrow beam equipment on mobile platforms such as drones, airships, and cars, it is difficult to establish communication because the mobile platforms do not know each other's positions and the initial beam cannot be aligned.

[0004] In view of the shortcomings of the commonly used methods, the present invention innovatively proposes a bidirectional narrow-beam wireless access method based on a moving platform. Summary of the invention

[0005] (I) Purpose of the invention

[0006] The purpose of the present invention is: when a narrow beam device is installed on a mobile platform such as a drone, an airship, or a car, since the mobile platforms do not know each other's positions, the initial beam cannot be aligned, making it difficult to establish communication. The present invention provides a bidirectional narrow beam wireless access method based on a mobile platform, which can achieve fast narrow beam access between mobile platforms with unknown positions.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the present invention provides a bidirectional narrow beam wireless access method based on a moving platform. The moving platform determines whether it is a transmitting platform or a receiving platform, and then the transmitting platform starts slow beam scanning to transmit signals; the receiving platform starts fast beam scanning to achieve signal access.

[0009] Wherein, narrow beam wireless communication devices are arranged on the transmitting platform and the receiving platform, and the transmitting platform and the receiving platform are installed on a UAV, an airship, or a car.

[0010] Among them, after the dynamic platform is powered on, the narrow-beam wireless communication device determines whether it is a transmitting platform or a receiving platform based on the pre-set parameters.

[0011] Wherein, the beam width is A, and the beam switching time of the transmitting platform is t. The switching time of the receiving platform is t1=t / (360 / A). Within the time t, the receiving platform can scan 360 degrees. The transmitting platform slowly scans horizontally from 0 to 360 degrees, and the dwell time of each beam is t, and the signal is transmitted. The receiving platform slowly scans horizontally from 0 to 360 degrees, and the dwell time of each beam is t1, and receives the signal until the signal is received, thus realizing signal access.

[0012] The present invention also provides a bidirectional narrow beam wireless access system based on a moving platform, comprising a transmitting platform and a receiving platform; the transmitting platform performs slow beam scanning to transmit signals; and the receiving platform performs fast beam scanning to achieve signal access.

[0013] Among them, the beam width is A, the beam switching time of the transmitting platform is t, and the switching time of the receiving platform is t1=t / (360 / A), which ensures that the receiving platform can scan 360 degrees within the time t; the transmitting platform slowly scans horizontally from 0 to 360 degrees, the dwell time of each beam is t, and transmits the signal; the receiving platform slowly scans horizontally from 0 to 360 degrees, the dwell time of each beam is t1, and receives the signal until the signal is received to achieve signal access.

[0014] (III) Beneficial effects

[0015] The above technical solution provides a two-way narrow-beam wireless access method based on a mobile platform. Since all platforms are narrow-beam, a two-way scanning search mode is adopted. During the search, there are two modes: fast and slow. The transmitting platform scans in slow mode and the receiving platform scans in fast mode. During the switching time of the slow mode, the fast mode realizes 360-degree scanning, thereby ensuring that access can be achieved within the 360-degree scanning time of the slow mode, thereby realizing fast narrow-beam access between mobile platforms with unknown locations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of fixed platform narrow beam alignment.

[0017] Figure 2 Schematic diagram of fast and slow beam scanning (taking beam width of 22.5 degrees as an example). DETAILED DESCRIPTION

[0018] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples.

[0019] This embodiment provides a bidirectional narrow beam wireless access method based on a moving platform. The moving platform determines whether it is a transmitting platform or a receiving platform. Then the transmitting platform starts slow beam scanning to transmit signals; the receiving platform starts fast beam scanning to achieve signal access.

[0020] Narrow beam wireless communication devices are arranged on the transmitting platform and the receiving platform.

[0021] The launching platform and receiving platform are installed on platforms such as drones, airships, and cars.

[0022] The process of the bidirectional narrow beam wireless access method based on the mobile platform in this embodiment is as follows:

[0023] In the first step, after power-on, the narrow-beam wireless communication device determines whether it is a transmitting platform or a receiving platform based on the pre-set parameters.

[0024] In the second step, assume that the beam width is A and the beam switching time of the transmitting platform is t, then the switching time of the receiving platform is t1 = t / (360 / A), ensuring that the receiving platform can scan 360 degrees within the time t.

[0025] In the third step, the transmitting platform slowly scans horizontally from 0 to 360 degrees, with each beam staying for t, and transmits the signal.

[0026] The fourth step is to slowly scan the receiving platform horizontally from 0 to 360 degrees, with each beam staying for t1, and receive signals until the signal is received to achieve signal access. Figure 2 shown.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A bidirectional narrow beam wireless access method based on a moving platform, characterized in that: The mobile platform determines whether it is a transmitting platform or a receiving platform, and then the transmitting platform starts slow beam scanning to transmit signals; the receiving platform starts fast beam scanning to achieve signal access.

2. The method for bidirectional narrow beam wireless access based on a moving platform according to claim 1, characterized in that: Narrow beam wireless communication devices are arranged on the transmitting platform and the receiving platform.

3. The method for bidirectional narrow beam wireless access based on a mobile platform according to claim 2, characterized in that: The launching platform and receiving platform are installed on a UAV, an airship, or a car.

4. The method for bidirectional narrow beam wireless access based on a moving platform as claimed in claim 3, characterized in that: After the mobile platform is powered on, the narrow-beam wireless communication device determines whether it is a transmitting platform or a receiving platform based on the pre-set parameters.

5. The method for bidirectional narrow beam wireless access based on a mobile platform according to claim 4, characterized in that: The beam width is A, and the beam switching time of the transmitting platform is t.

6. The method for bidirectional narrow beam wireless access based on a mobile platform according to claim 5, characterized in that: The switching time of the receiving platform is t1 = t / (360 / A). Within the time t, the receiving platform can scan 360 degrees.

7. The method for bidirectional narrow beam wireless access based on a moving platform according to claim 6, characterized in that: The transmitting platform slowly scans horizontally from 0 to 360 degrees, with each beam staying for t, and transmits a signal.

8. The method for bidirectional narrow beam wireless access based on a mobile platform according to claim 7, characterized in that: The receiving platform slowly scans horizontally from 0 to 360 degrees, with each beam dwelling time being t1, and receives signals until the signal is received to achieve signal access.

9. A bidirectional narrow beam wireless access system based on a moving platform, characterized in that: It includes a transmitting platform and a receiving platform; the transmitting platform performs slow beam scanning to transmit signals; the receiving platform performs fast beam scanning to achieve signal access.

10. The bidirectional narrow beam wireless access system based on a mobile platform according to claim 9, characterized in that: The beam width is A, the beam switching time of the transmitting platform is t, and the switching time of the receiving platform is t1=t / (360 / A), which ensures that the receiving platform can scan 360 degrees within the time t; the transmitting platform slowly scans horizontally from 0 to 360 degrees, the dwell time of each beam is t, and transmits the signal; the receiving platform slowly scans horizontally from 0 to 360 degrees, the dwell time of each beam is t1, and receives the signal until the signal is received to achieve signal access.

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