Design of an ATM shaping multiplexer with guaranteed output burstiness

H. Jonathan Chao, Jun S. Hong

Research output: Contribution to journalArticlepeer-review


In order to utilize network resources effectively while providing satisfactory quality of service (QoS) to all users on the ATM network, it is necessary to control users' traffic at the network edges. ATM traffic may be controlled at the User-Network Interface (UNI) and Inter-Network Interface (INI) based on the traffic contracts. We propose an ATM shaping multiplexer along with its implementation architecture for all ATM traffic connections multiplexed in an output stream. These connections are to be strictly regulated by the so-called Generic Cell Rate Algorithm (GCRA). When ATM streams conforming to the GCRA are multiplexed together, contention can disturb the streams such that they are no longer in conformance. Thus, a departure event driven traffic shaping (DEDTS) algorithm is adopted to shape the cell streams in such a way that the outgoing ATM stream of each individual connection conforms to the ATM traffic descriptors, Peak Cell Rate (PCR), Sustainable Cell Rate (SCR), Cell Delay Variation Tolerance (CDVT), and Burst Tolerance (BT) declared in the traffic contract. A proposed architecture can be implemented to support up to thousands of virtual connections using off the shelf components.

Original languageEnglish (US)
Pages (from-to)131-141
Number of pages11
JournalComputer Systems Science and Engineering
Issue number2
StatePublished - Mar 1997


  • ATM
  • Architecture
  • Departure event driven traffic shaping
  • QoS
  • Shaping multiplexer

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Theoretical Computer Science
  • General Computer Science


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