US 8,265,573 Wireless subscriber communication unit and method of power control with back-off therefore
5 defendants · 5 suits · updated September 14, 2026
Also cited as U.S. Patent No. 8,265,573 · US8265573B2 · US 8,265,573 B2 · 8265573 · the '573 patent
Velocity Communication Technologies, LLC has filed 5 patent-infringement suits on US 8,265,573, "Wireless subscriber communication unit and method of power control with back-off therefore" since July 30, 2026, 3 of them in the E.D. Tex., against 5 distinct defendants including Arcadyan Technology Corporation, Calix, Inc. and Sercomm Corporation. The patent was granted September 11, 2012 on a priority date of December 7, 2005. Its abstract opens: "A wireless subscriber communication unit comprises a transmitter having a power amplifier and a feedback power control loop having a power control function arranged to set an output power level of the power amplifier." The examiner cited 3 references during prosecution.
- Assignee
- Velocity Communication Technologies LLC
- Priority date
- December 7, 2005
- Granted
- September 11, 2012
- Expires
- December 7, 2025
- Status
- Active
- Claims
- 20 (3 independent)
- Inventors
- Michael O'Brien, Denis Dineen, Patrick Pratt
- Full text
- Google Patents
The suits
5 cases · E.D. Tex. (3) · D. Del. (2)
| Filed | Defendant | Plaintiff | Court | Docket |
|---|---|---|---|---|
| 2026-07-30 | Arcadyan Technology Corporation | Velocity Communication Technologies, LLC | E.D. Tex. | 5:26-cv-00102 |
| 2026-07-30 | Calix, Inc. | Velocity Communication Technologies, LLC | D. Del. | 1:26-cv-00937 |
| 2026-07-30 | Sercomm Corporation | Velocity Communication Technologies, LLC | E.D. Tex. | 5:26-cv-00101 |
| 2026-07-30 | TCL Electronics Holdings Limited | Velocity Communication Technologies, LLC | E.D. Tex. | 5:26-cv-00103 |
| 2026-07-30 | Vistance Networks, Inc. | Velocity Communication Technologies, LLC | D. Del. | 1:26-cv-00944 |
Docket links open the public record on CourtListener. Filing dates are the complaint's.
Independent claims
What is actually asserted, verbatim.
1. A wireless subscriber communication unit comprises a transmitter comprising: a power amplifier; and a closed loop analog feedback power control loop having a power control function arranged to set an output power level of the power amplifier, wherein the power control function performs a back-off of the output power level, in response to a back-off of a power level provided to the power amplifier, prior to completion of a transmission burst.
12. A method of power control in a wireless subscriber communication unit comprising a transmitter having a closed loop analog feedback power control loop having a power control function, the method comprising the steps of: setting an output power level of the transmitter by the power control function; transmitting a data burst; and performing a back-off of the output power level, in response to performing a back-off of a power level provided to a power amplifier, prior to completion of a transmission burst by the power control function.
20. An integrated circuit for use in a wireless communication device comprising: a transmitter; a closed loop analog feedback power control loop having a power amplifier; and a power control function arranged to set an output power level of the transmitter, wherein the power control function performs a back-off of the output power level, in response to a back-off of a power level provided to the power amplifier, prior to completion of a transmission burst.
Art before the examiner
11 references of record, 3 cited by the examiner.
Everything listed here was before the Office and is what a challenge must go beyond. Art the examiner never saw is where an invalidity search starts.
Examiner-cited
- US6650875B1 — Transmitter architecture having a secondary phase-error correction loop including an amplitude reconstruction system (Skyworks Solutions, Inc.)
- US6920334B1 — Method and apparatus for providing gain control feedback in RF amplifiers (International Business Machines Corporation)
- US7330071B1 — High efficiency radio frequency power amplifier having an extended dynamic range (Rf Micro Devices, Inc.)
Applicant-cited and other (8)
- JPH06244652A — Booster for radio equipment
- US20020080890A1 — Method and apparatus for a transceiver having a constant power output
- US6535066B1 — Dynamic RF amplifier bias control for digital wireless communications devices
- US6553212B1 — Method and apparatus for improving loop stability and speed of a power control loop
- US6580901B1 — Burst-type transmission output power control apparatus capable of reducing phase errors
- US6625227B1 — Artificial ramping of transmit power for burst transmissions
- US6693488B1 — Apparatus and method for a fast bandwidth switching circuit in a power amplifier control circuit
- EP1463197B1 — A device and method for measuring dependency of output power and for generating a ramp signal for a power amplifier
Classification
- H04W52/36primary — Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H03G3/3047 — Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers for intermittent signals, e.g. burst signals
- H04W52/52 — Transmission power control [TPC] using AGC [Automatic Gain Control] circuits or amplifiers
Family
- US8265573B2 — B2 (2012)
- US20080299923A1 — A1 (2008)
- 5 foreign family members: EP1980032B1, WO2007065478A1, TW200737783A, JP2009518905A, EP1980032A1
Abstract
A wireless subscriber communication unit comprises a transmitter having a power amplifier and a feedback power control loop having a power control function arranged to set an output power level of the power amplifier. The power control function is arranged to perform a back-off of the output power prior to completion of a transmission burst.
Also asserted by Velocity Communication Technologies, LLC
- US 10,200,096 — Beamforming using predefined spatial mapping matrices (5 defendants)
- US 8,213,870 — Beamforming using predefined spatial mapping matrices (5 defendants)
- US 8,238,832 — Antenna optimum beam forming for multiple protocol coexistence on a wireless device (5 defendants)
- US 8,260,213 — Method and apparatus to adjust a tunable reactive element (5 defendants)
- US 8,270,343 — Broadcasting of textual and multimedia information (5 defendants)
- US 8,644,765 — Beamforming using predefined spatial mapping matrices (5 defendants)
- US 8,675,570 — Scalable OFDM and OFDMA bandwidth allocation in communication systems (5 defendants)
- US 9,083,401 — Beamforming using predefined spatial mapping matrices (5 defendants)
- US 9,444,577 — Calibration correction for implicit beamformer using an explicit beamforming technique in a wireless MIMO communication system (5 defendants)
- US 9,596,648 — Unified beacon format (5 defendants)
Named in one of these suits? A prior-art search is commissioned once and serves every defendant who shares it. The examiner's own search record is free on the tools page, and your first preliminary search is free — one claim, back within 24 hours — so you know whether there is art the Office never saw before anyone pays for more. Flat fees: $2,500$899 for the independent claims, $5,000$1,500 for every asserted claim.
This page is assembled from public records — federal court dockets and the patent's own file — and is updated as the case list changes. It states what the record shows and is not an opinion on the validity or infringement of any claim. Patent data via Google Patents; docket data via CourtListener.