Patent ID: 6377583
Filing Date: 2002-04-23
Classification: H04L,H04Q

Abstract:
A traffic shaper in a packet switched communication system for shaping a plurality of time multiplexed serial flow of packets to corresponding unspecified bit rate network traffic contracts where the traffic contracts defines a peak packet emission rate, the traffic shaper comprising:a work conserving calendar queue for queuing entries for transmission from said packet switched communication system in a work-conserving manner; a non-work conserving calendar queue for queuing entries for transmission from said packet switched communication system in a non work-conserving manner; and, a scheduler enqueuing packets of the given flow (i) on said work conserving calendar queue when a rate at which the packets are emitted from the traffic shaper is compliant with the unspecified bit rate traffic contract for the given flow, and (ii) on said non-work conserving calendar queue at a rate that is less than or substantially equal to the peak packet emission rate when the rate at which the packets are emitted from the traffic shaper is non-compliant with the unspecified bit rate traffic contract for the given flow.