发明名称 |
TRANSPORT OF ISOCHRONOUS AND BURSTY DATA ON A SONET RING |
摘要 |
A method and apparatus for using SONET technology to efficiently carry both data and voice traffic by Add/Drop Multiplexing of both isochronous traffic, such as voice and video, and non-isochronous traffic, such as data, in a SONET/SDH fiber-optic ring topology. A portion of a SONET/SDH frame structure (STS-1, STM-1 etc.) is shared by a number of nodes connected to an optical SONET/SDH ring (either directly or sitting behind a SONET/ADM). The inherent column structure of the SONET/SDH frame is used to define dynamic channels (flexible bandwidth channels) between the nodes. Each dynamic channel can be assigned a priority and optionally a minimum bandwidth. The channel to column mapping is varied dynamically for data traffic by a centralized bandwidth manager which serves as an arbiter for requests for bandwidth. Both isochronous traffic and best effort data traffic may be carried in an STS-1 frame thereby allowing over-subscribing and statistical multiplexing of data channels over the unassigned portion of the STS-1 frame.
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申请公布号 |
WO0173988(A3) |
申请公布日期 |
2003.02.27 |
申请号 |
WO2001US09723 |
申请日期 |
2001.03.27 |
申请人 |
CORIOLIS NETWORKS, INC.;KOVVALI, SURYA, KUMAR;RAGHAVAN, RAMJI |
发明人 |
KOVVALI, SURYA, KUMAR;RAGHAVAN, RAMJI |
分类号 |
H04J3/00;H04J3/08;H04J3/16;H04Q11/04;(IPC1-7):H04J3/08;H04L12/56 |
主分类号 |
H04J3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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