Method and apparatus for a fail safe fourier transform matrix
AssigneeMotorola, Inc.
InventorsRonald L. PORCO, Leroy A. PLYMALE, JR.
Life of this patent
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Abstract
A base station transmitter for maintaining data rate transmission between a set of Fourier Transform matrices, having a digital Fourier Transform Matrix (FTM), and analog FTM, and a plurality of transmit paths therebetween. During the occurrence of a power amplifier failure, the method includes detecting the failure of a power amplifier (PA); and reconfiguring the digital FTM and analog FTM to a pass-thru mode.
Claims20
A method of reducing data transmission loss after an occurrence of a transmit path failure in a wireless communication network, said wireless communication network comprising a base-station configuration that comprises at least one digital Fourier transform matrix and at least one analog Fourier transform matrix each digital Fourier transform matrix and analog Fourier transform matrix comprising a first, a second, and a third sector signal path and comprising a first, a second, and a third transmit path between each digital Fourier transform matrix and each analog Fourier Transform matrix, the signal paths each comprising first, second, and third gains, respectively, and first, second, and third phases respectively, the method comprising:
- detecting by a controller, a reduction in amplitude of a signal from a transmit path between a first digital Fourier transform matrix and a first analog Fourier transform matrix;
- reconfiguring, by the controller, the first digital Fourier transform matrix to a pass-thru mode by replacing usage of an input table with usage of a pass-thru table;
- and
- re-routing, by the controller, the first analog Fourier transform Matrix to a pass-thru mode;
- coupling an output of the first analog Fourier Transform matrix with an output of a second analog Fourier Transform matrix;
- and
- transmitting the coupled outputs.
A system for reducing data transmission loss after the occurrence of a power amplifier failure in a wireless communication network, the system comprising:
- a base-station configuration comprising a transmitter, said transmitter comprising at least one digital Fourier transform matrix and at least one analog Fourier transform matrix;
- a plurality of transmit paths between said at least one of digital Fourier transform matrix and said at least one analog Fourier transform matrix;
- wherein each one of said plurality of said transmit paths comprises a power amplifier for amplifying a sector signal in the transmit path;
- a pass-thru switch on said at least one analog Fourier transform matrix;
- a database for storing configuration tables for said at least one digital Fourier transform matrix;
- a controller programmed to perform the steps of:
- determining a fault exists in one of said transmit paths;
- updating an input table of said at least one input digital Fourier Transform matrix with a pass-thru table;
- and
- reconfiguring at least one output analog Fourier Transform matrix to a pass-thru mode.
Dependencies are inferred from the claim text.