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Method, device and system for determining signal arrival angle

A technology of angle of arrival and signal, which is applied in the field of communication, can solve problems such as difficulty in forming a multi-level codebook antenna gain pattern that meets the requirements, beam width with limited resolution capability, and high power consumption of radio frequency links, etc., to achieve fast and accurate beam Effects on training performance, fast beam training, improved reliability and stability

Inactive Publication Date: 2020-10-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the design of the multi-level codebook requires the array antenna to have multiple radio frequency (Radio Frequency, RF) links (Chains) connecting the radio frequency front-end and the baseband. In the system, the number of radio frequency links is limited, and it is difficult to form a multi-level codebook and corresponding antenna gain pattern that meet the requirements; secondly, the multi-level codebook method relies on the strength of the received signal to judge the beam direction, the accuracy of the signal angle of arrival estimation and The ability to resolve multipath is limited by the beam width

Method used

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  • Method, device and system for determining signal arrival angle
  • Method, device and system for determining signal arrival angle

Examples

Experimental program
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example 1

[0209] Example 1), the sending device and the receiving device communicate using frequency division multiple access (frequency division multiple access, FDMA) technology or orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA) technology.

[0210] In example 1), the reference signal resources configured by the receiving device for the sending device are orthogonal to the reference signal resources configured by the receiving device for other sending devices in the frequency domain. That is, the receiving device configures time-frequency resources for multiple sending devices including the sending device, and different sending devices occupy different subcarriers or carriers in the frequency domain, and different sending devices can occupy the same subcarrier or carrier in the time domain. OFDM symbols or FDM symbols.

[0211] In example 1), multiple reference signals occupy one OFDM symbol and J subcarriers each time.

[0212] Th...

example 2

[0216] Example 2), the sending device and the receiving device use carrier sense multiple access (Carrier Sense Multiple Access, CSMA) technology for communication or time division multiple access (Time Division Multiple Access, TDMA) technology for communication.

[0217] In example 2), the time domain of the reference signal resources configured by the receiving device for the sending device is different from the time domain of the reference signal resources configured by the receiving device for other sending devices. That is, the reference signal resources configured by the receiving device for different sending devices are allocated to different time intervals, so that multiple different sending devices can use their respective configured reference signal resources to send reference signals to the receiving device in different time intervals . Therefore, multiple different sending devices can perform beam training in series without conflicting with each other. It should ...

example 3

[0221] Example 3), the array antenna architecture of the sending device and the receiving device is a hybrid beamforming architecture. When the array antenna architecture is an analog beamforming architecture, the system multiple access method considers two situations: OFDMA or (FDMA), CSMA (or TDMA), the difference between these two multiple access methods is whether multiple sending devices can be simultaneously AoA estimate. Similarly, when the array antenna architecture is a hybrid beamforming architecture, the same two situations exist in the multiple access mode of the system. Example 3) is only described in conjunction with the OFDMA system.

[0222] The hybrid beamforming architecture can form multiple beams with different directions at the same time, further reducing the overhead of beam switching. The number of beams with different directions is represented by I. Different terminals use different subcarriers to send uplink reference signals at the same time, so tha...

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Abstract

The embodiment of the invention provides a method, device and system for determining a signal arrival angle, relates to the technical field of communication, and is used for improving the beam training efficiency by accurately calculating the signal arrival angle. The method comprises the following steps that: receiving equipment sequentially switches a plurality of receiving wave beams to receivea plurality of same reference signals sent by sending equipment on a reference signal resource to obtain a plurality of receiving signals, wherein the beam directions of the plurality of receiving beams are different, and the beam directions of the plurality of receiving beams are in one-to-one correspondence with the plurality of reference signals; the receiving equipment performs digital signalprocessing on the multiple received signals to obtain a received signal matrix corresponding to the multiple received signals; the receiving equipment performs beam mapping operation on all signal elements in the received signal matrix to obtain a beam mapping matrix; and the receiving equipment determines a signal arrival angle of the sending equipment according to the beam mapping matrix and apreset algorithm.

Description

technical field [0001] The embodiments of the present application relate to the technical field of communications, and in particular, to a method, device, and system for determining an angle of arrival of a signal. Background technique [0002] As the demand for wireless communication continues to grow, more spectrum resources are allocated for wireless communication. Among them, the millimeter wave frequency band (30GHz-300GHz) can provide continuous bandwidth resources up to multiple GHz, and has been adopted by wireless local area network and wireless personal area network standards such as IEEE 802.11ad. The 3rd Generation Partnership Project (3GPP) standard also began to support millimeter wave communication in the 15th version (Release 15, R15), marking that millimeter wave communication has become the fifth generation (5-Generation, 5G) mobile One of the key technologies in the communication system. Given the high frequency and short wavelength of mmWave signals, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0408H04L5/00G01S3/14
CPCG01S3/14H04B7/0408H04L5/0048
Inventor 王旭东翟邦昭唐爱民戴明增卓义斌
Owner HUAWEI TECH CO LTD
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