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Method for optimal bandwidth allocation from cable head-ends to cable modems

IP.com Disclosure Number: IPCOM000021738D
Publication Date: 2004-Feb-04
Document File: 3 page(s) / 46K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for optimal bandwidth allocation from cable head-ends to cable modems. Benefits include improved functionality and improved performance.

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Method for optimal bandwidth allocation from cable head-ends to cable modems

Disclosed is a method for optimal bandwidth allocation from cable head-ends to cable modems.

Benefits include improved functionality and improved performance.

Background

         With the onset of widespread usage of the Internet by consumers and businesses, the requirement for methods that optimize data transfer rates through the pipeline to the home or business have become increasingly important.

         Conventional methods for changing channels involve use of a DOCSIS command that enables the modem to jump to another channel. However, this jump is not trivial and can cause a disruption of data transmission.

         The following terms appear below:

•         CMTS: Cable modem termination system, also called the cable head-end

•         UCD: Up-stream channel descriptor

•         US: Upstream channel (cable modem to cable head-end)

•         MAP: Data collected by the head-end containing the number of modems, bandwidth load, and data transmission statistics

•         CM: Cable modem, a node on the cable modem network

•         BW: Bandwidth, including:

-         How much of channel is being used to transmit data

-         How much is unused

-         What is the total amount of data that can be transmitted on a channel at any time

General description

         The disclosed method optimizes the data transfer rates between the cable modem termination system (CMTS) and cable modems (CM)s on a network. The method enables the CMTS to initiate calls to the modems to transfer channels to ensure optimal network performance and load balancing.

         The disclosed method includes a customized algorithm and related software that reside on the cable head-end and, preferably, are imbedded in silicon. The method enables the head-end to issue instructions that allow modems to efficiently change channels on the network.

Advantages

         The disclosed method provides advantages, including:

•         Improved functionality due to dynamically changing the number of modems that are transmitting on any channel

•         Improved functionality due to monitoring the traffic between the CMTS and CMs at all times

•         Improved performance due to optimizing the data transfer rates because of allocating the number of modems on each channel at any point in time

•         Improved performance due to avoiding any loss of connection time, improving efficiency over conventional methods

Detailed description

         The disclosed method consists of an algorithm that resides in cable head-end, which monitors the traffic between the CMTS and CMs at all times. The method dynamically changes the number of modems that are transmitting on any channel. Data transfer rates are optimized through the allocation of the number of modems on each channel at any point in time. Having the CMTS...