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Angle of arrival determination method, angle of departure determination method and communication device

An angle and baseband signal technology, applied in the information field, can solve the problem of low accuracy of angle of arrival or angle of departure

Active Publication Date: 2019-10-15
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] The disadvantage of the existing angle of arrival calculation method or angle of departure calculation method is: limited by the reporting protocol, when switching to an antenna, the protocol stipulates that the Bluetooth chip in the receiving end device can only report the phase information of one sampling point of the antenna To the processor, the receiver device only uses the phase information of one sampling point of each antenna reported by the Bluetooth chip, so the accuracy of the calculated angle of arrival or angle of departure is not high

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  • Angle of arrival determination method, angle of departure determination method and communication device
  • Angle of arrival determination method, angle of departure determination method and communication device
  • Angle of arrival determination method, angle of departure determination method and communication device

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Embodiment Construction

[0060] The application will be described in further detail below in conjunction with the accompanying drawings.

[0061] The technical solution provided by this application is suitable for Bluetooth indoor positioning systems, such as Figure 1a and Figure 1b As shown, and the angle of arrival (Angle of Arrival, AOA) at the receiving end and the Angle of Departure (AOD) technology at the transmitting end are applied to the indoor positioning system. The Bluetooth indoor positioning system can be applied to indoor navigation equipment, such as using a Bluetooth bracelet as a navigation terminal to effectively solve the problem that blind people cannot quickly, safely and conveniently reach the target place from the current position when they are doing indoor activities, especially in hospitals, Activities and travel problems in public places such as subway stations and shopping malls.

[0062] Specifically, method 1, taking a Bluetooth wristband as an example, the positioning...

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Abstract

The invention discloses an angle of arrival determination method, an angle of departure determination method, and a communication device. The angle of arrival determination method comprises the following steps: firstly receiving a carrier signal sent by emitting end equipment by receiving end equipment through multiple antennas, and then generating a baseband signal according to the carrier signal, and then sampling phase information of the waveforms of the multiple antenna at sampling points corresponding to different sampling moments from the baseband signal, and determining n phase values of each antenna of the multiple antennas, wherein the receiving end equipment averages the phase value weight of each antenna to obtain the phase average value of each antenna; and finally, computing the angle of arrival of the carrier signal according to the phase average value of each antenna, thereby improving the computation result precision of the angle of arrival.

Description

technical field [0001] The present application relates to the field of information technology, in particular to a method for determining an angle of arrival and an angle of departure, and a communication device. Background technique [0002] At present, positioning technology has a wide range of application scenarios and huge commercial value. Although the global navigation satellite system (Global Navigation Satellite System, GNSS) can provide high-precision outdoor location information, but indoors, the GNSS cannot be used because it cannot receive satellite signals. At present, relatively mature indoor positioning technologies include WiFi positioning based on RSSI (signal strength indication) and Bluetooth positioning technology based on Beacon (beacon). However, because RSSI fluctuates greatly with the environment, it can only achieve limited positioning accuracy. In order to make up for the shortcomings of the existing indoor positioning technology, the Bluetooth SIG ...

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Application Information

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IPC IPC(8): G01S3/48G01S5/08H04W4/02H04W4/33H04W4/80
CPCG01S3/48G01S5/08H04W4/023H04W4/33H04W4/80
Inventor 王伟余展
Owner HUAWEI TECH CO LTD
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