Method for allocating internodal link bandwidth in a packet oriented communication network to guarantee delay quality-of-service
First Claim
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1. A device for allocating bandwidth on an internodal link in a communication network for guaranteeing worst case maximum delays and worst case average delays in a packet oriented network while providing statistical gains, comprising:
- A) an enqueuer, operably coupled to receive packets from a switch output port, for enqueueing the packets in a queue,B) queues, operably coupled to the enqueuer, for storing the enqueued packets,C) a dequeuer, operably coupled to the queues and to a delay guarantee controller, for dequeuing the enqueued packets in accordance with a predetermined delay guarantee and transmitting cells from the packets on the internodal link, andD) the delay guarantee controller, operably coupled to the dequeuer, for providing predetermined worst case maximum delays and worst case average delays while providing statistical gains in maintaining predetermined end-to-end delay Quality of Service, QOS, objectives for different traffic types.
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Abstract
A device and method allocate bandwidth on internodal links in a communiation network such that worst case maximum delays and worst case average delays in a packet oriented network are guaranteed while providing statistical gains in maintaining predetermined end-to-end delay QOS objectives for different traffic types.
74 Citations
9 Claims
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1. A device for allocating bandwidth on an internodal link in a communication network for guaranteeing worst case maximum delays and worst case average delays in a packet oriented network while providing statistical gains, comprising:
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A) an enqueuer, operably coupled to receive packets from a switch output port, for enqueueing the packets in a queue, B) queues, operably coupled to the enqueuer, for storing the enqueued packets, C) a dequeuer, operably coupled to the queues and to a delay guarantee controller, for dequeuing the enqueued packets in accordance with a predetermined delay guarantee and transmitting cells from the packets on the internodal link, and D) the delay guarantee controller, operably coupled to the dequeuer, for providing predetermined worst case maximum delays and worst case average delays while providing statistical gains in maintaining predetermined end-to-end delay Quality of Service, QOS, objectives for different traffic types. - View Dependent Claims (2, 3, 4, 5)
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6. A method for allocating bandwidth on internodal links in an integrated communication network for guaranteeing worst case maximum delays and worst case average delays in a packet oriented network system while providing statistical gains, comprising the steps of:
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6A) receiving a connection setup request, 6B) determining connection parameters, CP, from the connection request, 6C) determining system parameters, SP, from a current state of the system, 6D) updating real time, B1, and non-real time, B2, bandwidths for guaranteeing worst case maximum delays and worst case average delays while providing statistical gains, 6E) determining whether a sum of real time and non-real time bandwidths, B1+B2, is less than a predetermined internodal link capacity, and one of; 6E1) where the sum of the real time and non-real time bandwidths, B1+B2, is less than the predetermined internodal link capacity, accepting the connection and updating the system parameters, SP, and 6E2) where the sum of the real time and non-real time bandwidths, B1+B2, is greater than or equal to the predetermined internodal link capacity, rejecting the connection. - View Dependent Claims (7, 8, 9)
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Specification