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A system and a method for mast vibration compensation

A vibration compensation, mast technology, applied in vibration damping, electrical components, transmitter monitoring, etc., can solve problems such as expensive and bulky, and achieve the effect of reducing requirements, increasing costs, and reducing overall cost and complexity

Inactive Publication Date: 2011-04-27
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, each mast must be stable and rigid, which makes it bulky and expensive

Method used

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  • A system and a method for mast vibration compensation
  • A system and a method for mast vibration compensation
  • A system and a method for mast vibration compensation

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Embodiment Construction

[0022] The proposed solution is to use adaptive antennas instead of traditional parabolic narrow beam antennas and to use electronic control of adaptive antennas to compensate for mechanical mast vibrations in backhaul networks such as those using microwave radio links, thereby reducing the requirement for mast stability .

[0023] Adaptive antennas with beam shape control are typically implemented in the base station to provide an appropriate communication link between the base station and the user terminal, as described in US 6917337 to Iida et al. Furthermore, adaptive antennas are also used in point-to-point (PTP) communication systems in order to implement interference mitigation methods, as described in published application US 2008 / 0049672 to Barak et al.

[0024] Typical half-power beamwidth angles of conventional high performance parabolic antennas are in the range 1° to 3°, depending on the frequency band and dimensions of the antenna. This leads to the conclusion t...

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Abstract

The present invention relates to a system 10; 20 for mast vibration compensation implemented in communication system including a first nod and a second node. The first node comprises a first adaptive antenna 11; 2 mounted in a mast; a receiver 12; 22 connected to said antenna 11; 21; an a spatial and temporary processing system 15; 25. The first adaptive antenna 11; 21 is controlled by a first correction signal generated in the spatial and temporary processing system 15; 25. The correction signal is based on a parameter that indicates that a radio link alignment with a second node is degrading due to mechanical vibrations in the mast. The invention also relates to a method for mast vibration compensation.

Description

technical field [0001] The present invention relates to systems and methods for mast vibration compensation by adapting antenna beam directions and / or beam patterns, in particular for compensating mast vibrations caused by external forces such as wind. Background technique [0002] In microwave radio links, high-gain parabolic antennas are often used. This is a very common solution. A separate outdoor unit is often mounted to the mast as part of field installation. Each mast must have very tight mechanical stability to allow the narrow beams of the high-gain antennas to remain aligned. This generally results in higher costs for the mast and installation and higher complexity on site. [0003] When microwave radio transmission is used as a technology for mobile backhaul, the cost and complexity of the mast in which the microwave radio is installed becomes a limiting factor in the overall field cost. The requirements for the mechanical stability of the mast in which the mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q3/26
CPCH01Q1/1242H01Q1/005H01Q1/185H01Q3/26H04B17/12H04B17/21
Inventor M·马里奥蒂
Owner TELEFON AB LM ERICSSON (PUBL)