Method and apparatus for LDPC transmission over a channel bonded link

Patent metadata

Field	Value
Publication number	US-9184872-B2
Application number	US-201414510971-A
Country	US
Kind code	B2
Filing date	Oct 9, 2014
Priority date	Jul 9, 2009
Publication date	Nov 10, 2015
Grant date	Nov 10, 2015

Abstract

A particular overall architecture for transmission over a bonded channel system consisting of two interconnected MoCA (Multimedia over Coax Alliance) 2.0 SoCs (Systems on a Chip) and a method and apparatus for the case of a “bonded” channel network. With a bonded channel network, the data is divided into two segments, the first of which is transported over a primary channel and the second of which is transported over a secondary channel.

First claim

We claim:

1. A method for determining a number of symbols needed to carry data to be transmitted over at least two bonded channels in a Multimedia over Coax Alliance (MoCA) 2.0 Network by a transmitting node communicating with a Network Controller, the transmitting node comprising at least one integrated circuit, the method comprising:
determining a number of bits per Orthogonal Frequency Division Multiplexing (OFDM) symbol for the at least two channels;
determining a number of parity bits per Low Density Parity Check (LDPC) codeword;
determining a maximum LDPC codeword payload sizes as determined from Error Vector Magnitude (EVM) reports for each channel;
determining a bonded channel frame splitting overhead; and
determining a maximum number of payload bits per OFDM symbol for each channel;
wherein the maximum number of payload bits per bonded OFDM symbol in channel i (M BAS,i ) is determined by the formula:

M

BAS
,
i

=

⌊

N

BAS
,
i

×

kLDPC

max
,
i

kLDPC

max
,
i

+

N
parity

⌋

where the index i indicates the particular channel, where N BAS,i is the number of bits per OFDM symbol to be used for channel i, where kLDPC max,i is the maximum LDPC codeword payload size for channel i, and N parity is the number of parity bits per LDPC codeword; and
transmitting information in the at least two bonded channels to a receiving node.

Assignees

• Entropic Communications Llc

Inventors

• Barr David
• Tsatsanis Michail
• Mueller Arndt
• Chen Na

Classifications

• H04L12/2865

  Logical combinations · CPC title

• H04L25/14

  Channel dividing arrangements {, i.e. in which a single bit stream is divided between several baseband channels and reassembled at the receiver} · CPC title

• H04L47/828

  Allocation of resources per group of connections, e.g. per group of users · CPC title

• H04L12/2801

  Broadband local area networks · CPC title

• H04L1/02

  by diversity reception · CPC title