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Antenna control method and system

An antenna control method and antenna control technology, applied in diversity/multi-antenna systems, transmission systems, transmission monitoring, etc., can solve problems such as coverage cannot be improved

Inactive Publication Date: 2014-02-12
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If you want to extend the signal farther, you need a higher-density deployment method; on the contrary, generally speaking, if you want to increase the coverage of a single antenna, you cannot use longer optical fibers, and the overall coverage cannot be improved.

Method used

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  • Antenna control method and system
  • Antenna control method and system
  • Antenna control method and system

Examples

Experimental program
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Embodiment Construction

[0043] The implementation example of the antenna control method and device proposed by the present invention can solve the multipath effect problem of the antenna system by controlling the transmission power and delay time of the remote antenna unit. In addition, the present invention further proposes an asymmetrical antenna control system to reduce the computational complexity when the antenna system performs channel adjustment.

[0044] Please refer to Figure 1A , a communication system 100 includes a base station (Base Station, BS) 120, a client device (subscriber) 170, a head end unit (Head End Unit, HEU) 140 and a plurality of remote antenna units (Remote Antenna Unit, RAU) 160.

[0045] The communication between the head-end unit 140 and the remote antenna unit 160 adopts microwave over fiber (Radio over Fiber, RoF) technology. Wherein, the head-end unit 140 is used to distribute and direct the downlink (Downlink) signal of the base station 120 to the remote antenna un...

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PUM

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Abstract

The invention discloses an antenna control method and system. A plurality of sets of attenuation parameters and delay parameters are defined. A plurality of channel responses, corresponding to a plurality of remote antenna elements, of a client terminal device and a base station are obtained. According to the channel responses, a plurality of channel characteristic values corresponding to the attenuation parameters and the delay parameters are calculated, and the channel characteristic values reflect the data transmission amount between the base station and the client terminal device. According to one default channel characteristic value, the corresponding set of the attenuation parameter and the delay parameter are selected and output.

Description

technical field [0001] The invention relates to an antenna control method and system. Background technique [0002] With the increasing awareness of environmental protection and the consideration of energy-saving economy, the public transportation system has become an important construction priority. In the communication service architecture of the public transportation system, a two-stage service architecture combining the vehicle-to-vehicle network and the vehicle-to-vehicle external network is usually adopted to provide a complete mobile communication service for many passengers in a single traveling compartment. [0003] Microwave over fiber (Radio over Fiber, RoF) technology has been widely used in places with poor signal reception quality such as tunnels or buildings. In recent years, fiber-optic microwave technology has been combined with rail communication systems to convert microwave signals into optical signals and send them to distant destinations and then conver...

Claims

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Application Information

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IPC IPC(8): H04B7/02H04B17/00H04B10/2575H04B17/12
Inventor 侯信安
Owner IND TECH RES INST