Methods and apparatus for implementing link capacity adjustment scheme sinking with rate based flow control

A rate and input rate technology, applied in the field of preventing data loss on LCAS sinks, and can solve problems such as complex control mechanisms and head-of-line blocking
CN1947385AInactive Publication Date: 2007-04-11TRANSWITCH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TRANSWITCH
Publication Date
2007-04-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

Methods for extracting packetized data from a SONET / SDH signal include processing the signal to produce a deskewed data stream; demapping the data stream to produce a stream of packets; and temporarily storing the packets in a packet buffer, wherein the demapping is performed at a first rate when the fullness of the buffer is below a fullness threshold and the demapping is performed at a second rate when the fullness of the buffer is at or above the fullness threshold. Apparatus for performing the methods are also disclosed.
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Description

technical field

[0001] The present invention relates to telecommunications, Synchronous Optical Network (SONET) and Synchronous Digital Hierarchy (SDH). More particularly, the present invention relates to methods and apparatus for preventing data loss on LCAS sinks. Background technique

[0002] The well-known European Synchronous Optical Network (SONET) or Synchronous Digital Hierarchy (SDH) is a commonly used telecommunication transmission scheme, which is designed to accommodate DS-1 (T1) and E1 services and their multiples (DS-3 and E-3). The DS-1 signal consists of up to twenty-four time division multiplexed DS-0 signals plus overhead bits. Each DS-0 signal is a 64kb / s signal and is the smallest bandwidth allocation in a digital network, ie enough for a single telephone connection. The E1 signal consists of up to thirty-two time-division multiplexed DS-0 signals, at least one of which DS-0 carries overhead information.

[0003] SONET, developed in the early 1980s, ha...

Claims

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