Alcatel Canada Inc.

Mustapha Aïssaoui

Natalie Giroux

Robert Elliott Robotham

The present invention provides a system and method for providing a different quality of service to a flow associated with an aggregate flow is provided. For an embodiment, the method comprises scheduling a plurality of data traffic flows in a communication network, the method comprising: (i) scheduling data traffic flows in a first category of data traffic, said first category of data traffic having a first bandwidth capacity associated therewith; (ii) determining whether any portion of said first bandwidth capacity is unused by data traffic flows in said first category of data traffic; and (iii) scheduling data traffic flows in a second category of data traffic providing said unused portion of said first bandwidth capacity for use for said data traffic in said second category.

System and method for scheduling data traffic flows for a communication device

A method and system for detecting and controlling congestion in a multi-port shared memory switch in a communications network. The proposed congestion management scheme implements a local and a global congestion monitoring process. The local monitoring process monitors the queue depth. When the queue depth for any queue exceeds a queue length threshold a congestion control mechanism is implemented to limit incoming data traffic destined for that queue. Additionally, the global congestion monitoring process monitors the shared memory buffer and if the traffic thereto exceeds a shared memory buffer threshold a congestion control mechanism limits incoming traffic destined for any output queue which has been exceeding a fair share threshold value.

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Kanata, Canada

Mustapha Aïssaoui