Telecommunication router

• US 20040081177A1
• Filed: 10/23/2003
• Published: 04/29/2004
• Est. Priority Date: 10/24/2002
• Status: Abandoned Application

• Current Assignee: Alcatel SA (Nokia Corporation)
• Original Assignee: Alcatel SA (Nokia Corporation)
• Inventors: Hereygers, Guido Josef Nelly, Van Hessche, Peter Alfons, Henderickx, Wim
• Application Number:
  US10/690,544
• Publication Number:
  US 20040081177A1
• Time in Patent Office: Days
• US Class Current: 370/401
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/22 Traffic shaping
• CPC Class Codes: H04L 47/2433 Allocation of priorities to traffic types
• CPC Class Codes: H04L 47/30 in combination with information about buffer occupancy at either end or at transit nodes
• CPC Class Codes: H04L 47/32 by discarding or delaying data units, e.g. packets or frames
• CPC Class Codes: H04L 47/50 Queue scheduling

Abstract

A telecommunication router (TLK, RTS) connected to a termination link (TL) and comprising a packet classifier (CL) receiving packets of data from the link and classifying them according to their type and an associated priority, a plurality of queues (P0-P3) storing the packets received from the classifier, and a processor (PROC) handling the packets stored in the queues. Each queue is associated to a predetermined priority and the classifier forwards each packet to the queue corresponding to its priority. The processor retrieves the packets from the queues according to predetermined priority rules. The packets are treated based on the current load of the processor and, owing to the buffering in the queues, the processing power is used as much as possible and a maximum of packets is processed as a function of the available processing power.

Claims

1. A telecommunication router (TLK, RTS) connected to a termination link (TL) and comprising a processor (PROC) adapted to handle packets of data received from said link,

characterized in that said telecommunication router further comprises a plurality of queues (P0-P3) adapted to store packets of data prior to be transferred to said processor (PROC), and a packet classifier (CL) adapted to receive packets of data from said termination link, to classify the received packets according to predetermined types, and to forward classified packets towards one queue out of said plurality, said one queue being selected according to the type of the forwarded packet,

in that each of said predetermined types is associated to a predetermined priority,

and in that said processor is adapted to retrieve packets of data from the queues of said plurality according to predetermined priority rules.

2. The telecommunication router according to claim 1, characterized in said processor (PROC) is adapted to retrieve packets of data from a queue associated to a relative high predetermined priority prior to retrieve packets of data from another queue associated to a relatively lower predetermined priority.

3. The telecommunication router according to claim 1, characterized in that said packet classifier (CL) is adapted to estimate said predetermined priority by analyzing the content of a packet and to forward the analyzed packet to the queue corresponding to the estimated priority.

4. The telecommunication router according to claim 1, characterized in that each queue of said plurality of queues (P0-P3) is controlled by a queue manager adapted to discard packets coming from said packet classifier (CL) when a predetermined threshold filling level (T0-T3) of the queue is reached.

5. The telecommunication router according to claim 4, characterized in that each queue of said plurality of queues (P0-P3) may have a different predetermined threshold filling level (T0-T3).

6. The telecommunication router according to claim 1, characterized in that said processor (PROC) is adapted to retrieve packets of data from said queues according to the load of said processor.

7. The telecommunication router according to claim 1, characterized in that a plurality of termination links (TL) are connected to said packet classifier (CL).

8. The telecommunication router according to claim 1, characterized in that a plurality of processors (PROC) are adapted to retrieve packets of data from said queues.

9. The telecommunication router according to claim 1, characterized in that said packet classifier (CL) is adapted to forward to an output port (OUT) of said telecommunication router (TLK, RTS) packets that are not intended to said processor (PROC).