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Wireless communications device and method for performing an angle measurement

A wireless communication device, a technology for angle measurement, applied in wireless communication, direction finders using radio waves, radio wave direction/bias determination systems, etc., and can solve problems such as increased cost and power consumption

Pending Publication Date: 2021-09-14
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The number of simultaneous measurements is proportional to the number of transmitter and receiver pairs, which increases cost and power consumption accordingly

Method used

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  • Wireless communications device and method for performing an angle measurement
  • Wireless communications device and method for performing an angle measurement
  • Wireless communications device and method for performing an angle measurement

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Embodiment Construction

[0055] In general, a method and wireless communication device are provided for determining an angle measurement in an IR-UWB device using the Scrambled Timestamp Sequence (STS) introduced in IEEE 802.15.4 and only one transmitter and receiver . STS is based on a cryptographically secure pseudorandom number generator (CSPRNG). As taught by the IEEE 802.15.4z standard, STS bursts can be divided into two or four blocks of active bursts encapsulated by silence intervals or guard bands, called "gaps" as required by the standard. In the described embodiment, a transmitter is switchably coupled to and shared by multiple transmitter antennas through a time division multiplexing (TDM) scheme. Likewise, the receiver is switchably coupled to and shared by multiple receiver antennas using a TDM scheme. In both the transmitter and the receiver, one antenna is active during the transmission of the STS field. During the "gap", the other antenna is activated. With the TDM scheme, multiple...

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PUM

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Abstract

A method and device using a single transmitter (TX) and / or a single receiver (RX) is provided for determining an angle measurement between the transmitter and receiver for an ultra-wideband (UWB) system. A plurality of RX antennas is coupled to the receiver and a plurality of TX antennas is coupled to the transmitter. An IEEE 802.15.4z standard provides a silent period or gap before and after scrambled timestamp sequences (STS) in a frame. An active antenna is switched to a different antenna in the gaps. This allows the angle measurements to be performed with only a single transmitter and receiver within one channel impulse response (CIR) measurement cycle.

Description

technical field [0001] The present disclosure relates generally to wireless communications, and more particularly, to a method for performing angle measurements. Background technique [0002] Impulse radio ultra-wideband (IR-UWB) technology as set forth in IEEE Std 802.15.4 is used for indoor ranging and positioning applications. The Ultra Wideband (UWB) frequency range is between 3.1 and 10.6GHz. Time-of-Flight (ToF) measurements of UWB signals are used to provide distance in ranging applications in IR-UWB systems. The time-of-flight is based on first path detection of channel impulse response (CIR) measurements. [0003] The physical distance between two objects can be deduced from a ToF measurement. Angle measurements, such as angle of departure (AoD) and angle of arrival (AoA), typically require multiple simultaneous measurements of ToF and phase from each transmitter (tx) and receiver (rx) pair. A CIR measurement cycle refers to the transmission and reception of one...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/14
CPCG01S3/14H04L5/0023H04L5/0082H04L27/2607H04L27/2613H04L25/0212H04B7/0805H04B7/0608H04L1/0618H04B7/0413H04W24/10H04B7/0669H04W72/0446H04L25/0204
Inventor 周军徐盛阳阿卜杜勒·瓦希德·阿卜杜勒·卡里姆拉达·斯里尼瓦桑布里马·巴巴通德·易卜拉欣
Owner NXP BV
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