Title:
FRAME-BASED COMMUNICATION WITH VARIABLE RATE PAYLOAD
Document Type and Number:
WIPO Patent Application WO2001078489
Kind Code:
A3
Abstract:
A transceiver method and signal therefor embodied in a carrier wave for sending information from transmit stations to receive stations over a transmission medium of a frame-based communications network. The information is sent in transmit frames having a frame format comprising a fixed rate header, followed by a variable rate payload, followed by a fixed rate trailer. The fixed rate header includes a preamble. The preamble has a repetition of four symbol sequences for facilitating power estimation, gain control, baud frequency offset estimation, equalizer training, carrier sensing and collision detection. The preamble also includes a frame control field. The frame control field has scrambler control information for frame scrambling initialization, a priority field to determine the absolute priority a transmit frame will have when determining access to the transmission medium, a payload encoding field which determines constellation encoding of payload bits in the variable rate payload, and a header check sequence for providing a cyclic redundancy check. The variable rate payload is transmitted pursuant to dynamic adjustable frame encoding parameters for improving transmission performance for a transmit frame being transmitted from a transmitting station to a receiving station. The header also includes a destination address field, a source address field and an ethertype field.
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Inventors:
HOLLOWAY JOHN T (US)
FRANK EDWARD H (US)
OJARD ERIC (US)
TRACHEWSKY JASON ALEXANDER (US)
MALLORY TRACY D (US)
PTASINSKI HENRY S (US)
HAYES RAYMOND (US)
PETERSON KEVIN H (US)
YAMANO LARRY C (US)
CORRY ALAN (US)
PATTIN JAY (US)
FRANK EDWARD H (US)
OJARD ERIC (US)
TRACHEWSKY JASON ALEXANDER (US)
MALLORY TRACY D (US)
PTASINSKI HENRY S (US)
HAYES RAYMOND (US)
PETERSON KEVIN H (US)
YAMANO LARRY C (US)
CORRY ALAN (US)
PATTIN JAY (US)
Application Number:
PCT/US2001/010882
Publication Date:
May 23, 2002
Filing Date:
April 04, 2001
Export Citation:
Assignee:
BROADCOM HOMENETWORKING INC (US)
HOLLOWAY JOHN T (US)
FRANK EDWARD H (US)
OJARD ERIC (US)
TRACHEWSKY JASON ALEXANDER (US)
MALLORY TRACY D (US)
PTASINSKI HENRY S (US)
HAYES RAYMOND (US)
PETERSON KEVIN H (US)
YAMANO LARRY C (US)
CORRY ALAN (US)
PATTIN JAY (US)
HOLLOWAY JOHN T (US)
FRANK EDWARD H (US)
OJARD ERIC (US)
TRACHEWSKY JASON ALEXANDER (US)
MALLORY TRACY D (US)
PTASINSKI HENRY S (US)
HAYES RAYMOND (US)
PETERSON KEVIN H (US)
YAMANO LARRY C (US)
CORRY ALAN (US)
PATTIN JAY (US)
International Classes:
H04J3/06; H04L1/00; H04L1/18; H04L12/413; H04M11/00; H04M11/06; H04L1/08; H04L1/12; (IPC1-7): H04L1/00
Domestic Patent References:
| WO1999020016A1 | 1999-04-22 |
Foreign References:
| EP0938207A2 | 1999-08-25 |
Other References:
CARLSON: "PPP over Simple Data Link (SDL) using SONET/SDH with ATM-like framing", INTERNET DRAFT, November 1998 (1998-11-01), pages 1 - 21, XP002112807
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