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System, a device and a method for adjusting output power in a distributed amplifier system

a distributed amplifier and system technology, applied in the field of telecommunication systems, can solve the problems of reducing the effectiveness of das for wireless devices using a variety of communication networks, affecting the performance of communication devices, and affecting the operation of duplex signals,

Inactive Publication Date: 2014-07-10
WHOOP WIRELESS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention relates to a system and method for analyzing signals received from different sources in a communication network. The system includes a receiver, spectrum analyzer, controller, amplifier, filter, and transmitter. The spectrum analyzer determines the power of signals from each source and sends an indication to the controller if the power exceeds a certain threshold. The controller then adjusts the gains of the amplifier accordingly and sends the signals to a second device for further transmission. The second device also adjusts the gains based on the indication from the controller. The technical effect of the invention is to optimize the signal quality and ensure stable communication between different devices in the network.

Problems solved by technology

In a distributed amplifier system (DAS), when the DAS system is located very close to the communications network source signal such as a cellular tower, a power of a communication device can be so low that it may result in degraded performance or a dropped call.
Unfortunately, lowering the output power of the DAS amplifier will lower the output power for communication signals that are going to different communication systems from different network providers, therefore reducing the effectiveness of the DAS for the wireless devices using a variety of communication networks.

Method used

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  • System, a device and a method for adjusting output power in a distributed amplifier system

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Embodiment Construction

[0017]FIG. 1A is a diagram illustrating a deployment of a distributed amplifier system 10A. The cellular signals from outdoor cellular towers may not provide clear and consistent coverage inside buildings, so wireless operators and building owners use distributed antenna systems 10A to broadcast cellular signals throughout their sites. Note that the cellular signals are for illustration, and it may also include Wi-Fi signals, satellite signals, and other communication signals. The communications signals are distributed throughout building interiors, campus environments, and outdoor areas using an active Distributed Amplifier System (DAS). The DAS is active because it uses signal amplifiers to add gain to communications radio frequency (RF) signals. This gain also facilitates penetration of the signals throughout a building, campus environment, or outdoor areas despite physical obstructions such as walls, interior structures, poles, and trees without loss of signal integrity.

[0018]Th...

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Abstract

A system comprises a first device and a second device. The first device comprises a receiver, a spectrum analyzer, a controller, an amplifier, a filter and a transmitter. The first device receives from at least one antenna a plurality of signals from different sources. The spectrum analyzer is coupled to the receiver and determines whether a downlink signal power from each of the sources to the system exceeds a predetermined threshold. The controller is coupled to the spectrum analyzer and generates a first indication indicating lowering gains of an amplifier on signals from at least one source with downlink signal power larger than the predetermined threshold. The amplifier is coupled to the controller and lowers gains of the amplifier according to the indication from the controller. The transmitter transmits the plurality of signals after adjustment to at least one second device distributed within a site.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S)[0001]The present application claims the benefit of and incorporates by reference U.S. provisional application No. 61 / 749,922, entitled “Intelligent Distributed Amplifier System,” which was filed on Jan. 8, 2013.TECHNICAL FIELD[0002]The present disclosure relates to a telecommunication system, and more particularly, but not exclusively to a system, a device and a method for adjusting signal output power in a distributed amplifier system.BACKGROUND[0003]In a distributed amplifier system (DAS), when the DAS system is located very close to the communications network source signal such as a cellular tower, a power of a communication device can be so low that it may result in degraded performance or a dropped call.[0004]In order to protect the communications network, the DAS will lower the output power to where the noise is below the noise floor of the communications system. Unfortunately, lowering the output power of the DAS amplifier will lower ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04W52/24
CPCH04W52/245H03G3/20H04B1/16H04B17/318H04W16/26H04W24/02H04W24/08H04W24/10H04W52/52H04W88/085
Inventor TERRY, SCOTT
Owner WHOOP WIRELESS
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