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Coaxial network communication node and methods for communicating multimedia over a coaxial network with reduced-length cyclic prefixes

A communication node and coaxial network technology, applied in wireless communication, transmission path sub-channel allocation, shaping network in transmitter/receiver, etc., can solve problems such as large bandwidth, reduced throughput, and consumption

Inactive Publication Date: 2012-03-21
INTEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cyclic prefix for each OFDM symbol consumes considerable bandwidth and thus reduces throughput

Method used

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  • Coaxial network communication node and methods for communicating multimedia over a coaxial network with reduced-length cyclic prefixes
  • Coaxial network communication node and methods for communicating multimedia over a coaxial network with reduced-length cyclic prefixes
  • Coaxial network communication node and methods for communicating multimedia over a coaxial network with reduced-length cyclic prefixes

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Embodiment Construction

[0026] The following description and drawings sufficiently illustrate specific embodiments to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. Portions and features of some embodiments may be included in or substituted for those of other embodiments. Embodiments set forth in the claims encompass all available equivalents of those claims.

[0027] figure 1 is a diagram of a coaxial network according to some embodiments. Coax network 100 includes a plurality of coax network communication nodes 102 coupled by coaxial cable 113 and splitter 112 as part of splitter and wiring cloud 103 . Coax network 100 may be configured to receive cable service from cable headend or root node 101 and distribute signals to devices, such as cable modem 116 for Internet service and set top box 118 for cable television service. Cable modem 116 may be a DOCSIS modem and may be connected to personal comp...

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Abstract

A coaxial network communication node receives multimedia content with one or more other nodes in a coaxial network. The node determines a delay-spread of a coaxial channel based on receipt of a probe from a transmitting node and configures a channel-shortening time-domain equalizer (TEQ) filter to effectively shorten the channel based on the delay spread. The node instructs the transmitting node to shorten a length of a cyclic prefix for subsequent packet-based transmissions to be received from the transmitting node. The probe is stored and reused until the channel-shortening TEQ filter converges. The nodes may be configured to communicate in accordance with the Multimedia over Coax Alliance (MoCA TM) specifications.

Description

[0001] The application of the present invention is a divisional application of the invention application submitted by the applicant of the present invention on September 21, 2010, the application number is 201010297952.6, and the invention name is "communication node and method for transmitting multimedia via coaxial network with shortened cyclic prefix" . technical field [0002] Embodiments relate to the transfer of information, such as multimedia content, within a coaxial network. Some embodiments relate to communication nodes, for example according to the Multimedia over Coax Alliance (MoCA ) configured nodes. Some embodiments relate to coaxial network communications utilizing Orthogonal Frequency Division Multiplexing (OFDM) signals. Some embodiments relate to accelerated convergence of time domain equalizer (TEQ) filters. Background technique [0003] such as the Multimedia over Coax Alliance (MoCA Some coaxial networks, such as networks operated by ), utilize OF...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L25/03
CPCH04L2025/03414H04L2025/03681H04L2025/03777H04L27/2607H04L25/03019H04L5/0048H04W72/20
Inventor K·劳德尔Y·郭
Owner INTEL CORP