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Method and system for distributing high throughput bandwidth in a cable network

A bandwidth allocation and wired network technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as infeasibility

Inactive Publication Date: 2006-10-04
BROADCOM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is currently not feasible to use very high order modulation techniques (such as 1024QAM) and wider channels in the upstream data stream

Method used

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  • Method and system for distributing high throughput bandwidth in a cable network
  • Method and system for distributing high throughput bandwidth in a cable network
  • Method and system for distributing high throughput bandwidth in a cable network

Examples

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Embodiment Construction

[0078] 1 Overview

[0079] The existing CableLabs(R)CertifiedTM cable modem project interface specification, also known as the Cable Data Service Transmission Specification (DOCSIS(R)), is referred to in this specification as the "traditional" specification (for example, DOCSIS 2.0, DOCSIS 1.1, and DOCSIS 1.0). The interface requirements of the wired communication system are specified, but the interface requirements for realizing uplink channel binding are not specified. Therefore, in one embodiment, the present invention implements the upstream channel bonding technology as an extension of the existing DOCSIS interface specification. The DOCSIS 2.0 radio frequency interface specification SP-RFIv2.0-I04-030730 published by Cable Television Laboratories, Inc. in 2005 is hereby used as a reference document in this application.

[0080] 1.1 System overview

[0081] figure 1 Shown is a voice and data communication management system 100. The voice and data communication management sy...

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Abstract

A method for increasing upstream bandwidth per cable modem user in a cable communications system that includes a cable modem termination system (CMTS) and a plurality of cable modems is provided. The method permits a cable modem to transmit data to the CMTS on multiple upstream channels simultaneously using a technique called 'channel bonding.' Bandwidth allocation is achieved by transmitting from a CMTS to a cable modem a unique bandwidth allocation message for each upstream channel in a bonded group of upstream channels, wherein the combination of unique bandwidth allocation messages collectively allocates requested bandwidth across the bonded group.

Description

[0001] Technical field [0002] The present invention relates to a data communication system, and more specifically, to a method of transmitting data in a wired communication system. Background technique [0003] Traditional cable communication systems generally use cable modem head-ends to manage communications with multiple cable modems. The head-end defines the upstream data stream operating characteristics that enable the cable modem to send the carrier signal upstream to the head-end. The upstream data stream may include multiple channels allocated to the cable modem. These channels are separated from each other by operating at different frequencies. [0004] One or more cable modems use designated channels to transmit carrier signals carrying requests and / or data to the headend. The head-end receives the upstream data stream signal through a demodulator connected to the physical spectrum that interconnects the modem and the head-end. The demodulator recovers the request and / o...

Claims

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Application Information

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IPC IPC(8): H04L5/00
Inventor 莉萨·沃伊特·丹尼奈基·罗伯塔·潘特利斯斯科特·A·霍洛姆斯维克托·T·霍约翰·丹勒特·霍顿大卫·迈克尔·普伦
Owner BROADCOM CORP
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