Millimeter wave single base station positioning method based on switching beam forming

A technology of beamforming and positioning method, which is applied in the direction of location information-based services, wireless communication, electrical components, etc., can solve the problems of high non-line-of-sight positioning error and difficult penetration of millimeter wave signals, and achieve great convenience and reduce effect of complexity

Active Publication Date: 2020-05-12
QINGDAO UNIV OF SCI & TECH
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Problems solved by technology

[0005] In order to solve the technical problem of high non-line-of-sight positioning error caused by millimeter-wave signals being difficult to penetrate obstacles, the present invention proposes a millimeter-wave single base station positioning method, which can achieve high-precision positioning with only a single base station

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  • Millimeter wave single base station positioning method based on switching beam forming
  • Millimeter wave single base station positioning method based on switching beam forming
  • Millimeter wave single base station positioning method based on switching beam forming

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Embodiment 1

[0033] Embodiment 1. This embodiment proposes a mmWave single base station positioning method based on switching beamforming. This method can realize positioning only by setting up one base station. For example, figure 1 As shown, including the base station terminal B and the terminal M to be positioned, the positioning method includes the following steps:

[0034] S1. Establish beam codebook record tables for the base station and the terminal to be positioned respectively; the base station and the terminal to be positioned are respectively provided with antenna arrays, and the beam codebook record tables record different beam pointing angles of the array antennas.

[0035] S2. The base station B and the terminal M to be positioned perform beam training on their respective array antennas to find the optimal beam pair pointing and the suboptimal beam pair pointing when communicating with each other; the base station B can be used as the transmitting end or the receiving end , t...

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Abstract

The invention discloses a millimeter wave single base station positioning method based on switching beam forming. The millimeter wave single base station positioning method comprises the following steps: (1) respectively establishing beam codebook record tables of a base station end and a to-be-positioned terminal; (2) enabling the base station end and the to-be-positioned terminal to find the optimal beam pair direction and the suboptimal beam pair direction respectively through beam training when communicating with each other; (3) respectively obtaining angle information of two reflection paths according to the beam codebook angle record table of the base station end; (4) acquiring signal arrival time delays t1 and t2 of the two reflection paths respectively; and (5) respectively calculating the lengths of the two transmission paths according to the arrival delays t1 and t2 and the electromagnetic wave propagation speed, and calculating the coordinates of the terminal to be positioned by using a trigonometric function. On one hand, the angle information is obtained through the beam codebook record table, the complexity of angle estimation is reduced, and great convenience existsin the positioning process; and on the other hand, the precision advantage of millimeter wave arrival time distance measurement estimation can be exerted.

Description

technical field [0001] The invention belongs to the technical field of positioning, and in particular relates to a millimeter wave single base station positioning method based on switching beamforming. Background technique [0002] In the field of positioning technology, positioning errors can generally be divided into multipath errors and NLOS (Not line of sight, non-line of sight) errors. Whether it is a LOS (line of sight) channel or an NLOS channel, the multipath error is unavoidable. It has little impact on the multipath error in an environment with a high signal-to-noise ratio, and the NLOS error plays a leading role. NLOS channels can usually be divided into two situations, NDDP (Non-Dominant Direct Path) and UDP (Undetectable Direct Path), and the division is based on whether the receiving end can successfully receive the Direct Path (DP). NDDP means that DP can still be detected, while UDP means that in a severe NLOS environment, weak DP signals can no longer be re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W16/28H04W64/00
CPCH04W4/02H04W16/28H04W64/00
Inventor 施威王景景董新利徐凌伟田玉芳王盼
Owner QINGDAO UNIV OF SCI & TECH
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