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Method to frame and format in WDM-based photonic burst switched networks

A technology for optical burst switching and switching networks, which is applied in the field of formatting and framing, and can solve problems such as slow operation, ineffective support, and traffic bottlenecks in optical switching networks

Inactive Publication Date: 2009-08-05
INTEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The O-E-O conversion at each switching node in the optical network is not only a very slow operation (typically about ten milliseconds), but also very expensive and has the potential to create a traffic bottleneck for the optical switching network
In addition, current optical switching technologies cannot effectively support the "bursty" traffic that often occurs in packet communication applications such as the Internet

Method used

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  • Method to frame and format in WDM-based photonic burst switched networks
  • Method to frame and format in WDM-based photonic burst switched networks
  • Method to frame and format in WDM-based photonic burst switched networks

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Embodiment Construction

[0024] figure 1 A photonic burst switching (PBS) network 10 is illustrated according to one embodiment of the present invention. In this document, the term "photonic burst" is used to refer to statistically multiplexed packets (such as Internet Protocol (IP) packets or Ethernet frames) that have similar routing requirements. An optical burst generally includes a photonic label containing the header of the IP packet and other routing information, and a payload containing the data segment of the packet.

[0025] This embodiment of the PBS network 10 includes a local area network (LAN) 13 1 -13 N and a backbone optical WAN (not shown). Furthermore, this embodiment of the PBS network 10 includes an ingress node 15 1 -15 M , switching node 17 1 -17 L and exit node 18 1 -18 K . PBS network 10 may include and figure 1 Other ingress, egress and switching nodes (not shown) are interconnected by the switching node shown in . In this paper, ingress nodes and egress nodes are ...

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Abstract

A wavelength-division-multiplexed based photonic burst switched (PBS) network, which includes edge and switching nodes, optically communicate information formatted into PBS control and data burst frames. Each PBS data burst frame is associated with a PBS control burst frame. A PBS burst frame includes a PBS burst header and burst payload having fields to indicate whether: (a) the PBS burst frame is a PBS control burst; (b) the control burst is transmitted on a wavelength different from that of the associated PBS data burst; and (c) the PBS burst frame has a label for use in a generalized multi-protocol label swapping (GMPLS)-based control system. The PBS burst payload frame includes fields to indicate (a) specific PBS payload information; (b) PBS data payload; and (c) an optional PBS payload frame check sequence (FCS) for error detection.

Description

technical field [0001] The present invention relates generally to optical networks; more particularly, the present invention relates to the formatting and framing of optical control and data bursts in photonic burst switched networks. Background technique [0002] Transmission bandwidth requirements in telecommunication networks such as the Internet seem to be increasing all the time, and solutions to support this bandwidth requirement are being sought. One solution to this problem is the use of fiber optic networks, where wavelength division multiplexing (WDM) technology is used to support the increasing demand for higher data rates in optical networks. [0003] Traditional optical switching networks generally use wavelength routing (wavelength routing) technology, which requires optical-electrical-optical (O-E-O) conversion of optical signals to be completed at an optical switch (optical switch). O-E-O switching at each switching node in an optical network is not only a v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J14/02H04B10/12H04Q3/52H04Q11/00
CPCH04Q11/0066H04Q11/0071H04Q2011/0077H04Q2011/0088H04B10/2581H04L12/28H04Q3/52H04J14/02
Inventor 克里斯琴·马乔科奥瓦迪亚·什洛莫
Owner INTEL CORP