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Dynamic traffic management on a shared medium

A technology for sharing media and data rates, which is applied in multiplexing system selection devices, data switching networks, time-division multiplexing selection devices, etc., and can solve problems such as no description

Inactive Publication Date: 2005-03-09
CORIOLIS NETWORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the SONET standard does not specify the ability to dynamically add or remove columns without closing traffic on the ring.

Method used

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  • Dynamic traffic management on a shared medium
  • Dynamic traffic management on a shared medium
  • Dynamic traffic management on a shared medium

Examples

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Embodiment Construction

[0051] Referring to FIG. 1, a communication system includes a plurality of nodes 120, 121 that communicate data between each other using a shared communication medium of limited capacity. The medium is shared in communication between a pair of nodes using a common pool of communication capacity that is also used for communication between other pairs of nodes. (In the following discussion, the term "bandwidth" is usually used interchangeably with "communication capacity" or "communication rate", reflecting a feature that higher communication rates in broadband communication systems generally require greater bandwidth.) According to the present invention Management of Shared Media in [0019] addresses assigning shared media to compete or potentially conflict over shared media. In the embodiments described below, the shared medium imposes a limit on the aggregate data rate of all communication channels conveyed over the medium. This limitation can be a temporal variation outside ...

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Abstract

An approach for managing dynamic traffic on a shared medium, for example, on a SONET ring, makes use of a central arbiter that communicates with stations coupled to the medium. Each station makes requests to change bandwidth for dynamic traffic entering the medium at that station, and also implements a congestion avoidance algorithm that is coordinated with its requests for changes in bandwidth. The central arbiter responds to the requests from the stations to provide a fair allocation of bandwidth available on the shared medium.

Description

technical field [0001] The present invention relates to dynamic traffic management in shared media. Background of the invention [0002] Various network structures are used to transmit data. Probably the most popular network is Ethernet (Ethernet). Ethernet is a bus technology that uses the Carrier Sense Media Access with Collision Detection (CSMA / CD) protocol. Every station connected to the bus listens to the media before starting packet transmission. If a collision is detected during transmission, the transmitting station immediately stops transmission and transmits a brief jamming signal to indicate to all stations that a collision has been transmitted. It then waits for a random amount of time before transmitting again using CSMA. [0003] No bandwidth management is displayed on the Ethernet bus. Each station independently decides to transmit and performs local traffic management on flows originating at that station. Therefore, this solution does not need to provid...

Claims

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Application Information

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IPC IPC(8): H04L12/42H04J3/08H04L12/24H04L12/423H04L12/56H04Q11/04
CPCH04L41/0896H04L47/12H04L47/30H04L47/32H04J2203/0098H04L12/5695H04L47/762H04J3/085H04L47/805H04L47/10H04L12/423H04J2203/0042H04L47/781H04L47/20H04Q11/0478H04J2203/0069H04L47/15H04J2203/0064H04L47/29H04L47/70
Inventor 帕塔比拉曼·克里希纳叶海亚·埃尔卡查苏里亚·库马尔·科瓦里拉姆吉·拉加万查尔姆W·博伊尔
Owner CORIOLIS NETWORKS