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Systems and methods for increasing capacity in collision-based data networks

A data and network technology, applied in the field of multi-access data network, can solve the problems of reducing the conflict rate, the throughput cannot be calculated or managed by the station, and the throughput is low

Inactive Publication Date: 2008-10-15
OPTIMAL INNOVATIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No evidence of reduced conflict rates under high traffic conditions
Finally, while a station may have an "advertised" throughput, the actual throughput may be much lower, depending on factors outside the station's control, and thus cannot be calculated or managed by the station
Therefore, business management is difficult

Method used

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  • Systems and methods for increasing capacity in collision-based data networks
  • Systems and methods for increasing capacity in collision-based data networks
  • Systems and methods for increasing capacity in collision-based data networks

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Embodiment Construction

[0017] Before beginning a detailed discussion of certain illustrative embodiments of the invention, it may be helpful to review the basic structure of an Ethernet protocol implementation. Regarding the Ethernet local area network (LAN) structure, there are bus structure and tree structure. The bus structure allows direct access by each station. Ethernet CSMA / CD is designed for this purpose, ie a shared medium for all stations.

[0018] The tree structure is hierarchical, with stations at the bottom of the hierarchy and gateways to external networks at the top of the hierarchy. The number of tiers between top and bottom tiers is based on the number of stations and traffic volume. In the tree structure, each station has its own medium (cable, air link) to the next level in the hierarchy. Ideally, the second smallest level should be a router, which eliminates the shared media problem. For economical reasons, HUBs (hubs) are often used to convert individual media into shared m...

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PUM

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Abstract

A multiple-access contention-free environment is disclosed for a local area network without using centralized control and without using information contained in the data. Data collisions are eliminated by buffering data from connected devices when the bus (or other common transportation media) is not available for immediate use. In one embodiment, the buffering is controlled by hubs that can accept information or hold it up for a period of time until the buffer clears. Buffer fullness can be used, if desired, as a measure as to which buffer to draw from first. When buffers are full, signals are sent to the stations to reduce their access to the network on a temporary basis.

Description

[0001] This patent application claims U.S. Patent Application Serial No. [Attorney Docket No. 66816-P009US-10606750], entitled "Systems and Methods for Increasing Capacity in Collision-based Data Networks," filed October 3, 2006, and Priority to co-pending US Provisional Patent Application Serial No. 60 / 726,459, entitled "Frame Multiplexer for Local AreaNetwork," filed October 14, 2005, the disclosures of which are incorporated herein by reference. technical field [0002] The present invention relates to multiple access data networks, and more particularly to systems and methods for avoiding collisions while increasing throughput. Background technique [0003] Ethernet is a common multiple access control (MAC) protocol used to handle data flow in a local area network. Because data from multiple points flows over a common transmission medium, multiple concurrent competing forms of collisions for the same medium can occur in data from different points. To handle such content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40H04L12/54H04L12/56H04L12/861
Inventor 彼得·埃尔·关·乔
Owner OPTIMAL INNOVATIONS INC