Buffer overflow management in QoS switches
STOC '01 Proceedings of the thirty-third annual ACM symposium on Theory of computing
Competitive queueing policies for QoS switches
SODA '03 Proceedings of the fourteenth annual ACM-SIAM symposium on Discrete algorithms
Management of multi-queue switches in QoS networks
Proceedings of the thirty-fifth annual ACM symposium on Theory of computing
On the performance of greedy algorithms in packet buffering
STOC '04 Proceedings of the thirty-sixth annual ACM symposium on Theory of computing
The zero-one principle for switching networks
STOC '04 Proceedings of the thirty-sixth annual ACM symposium on Theory of computing
An optimal online algorithm for packet scheduling with agreeable deadlines
SODA '05 Proceedings of the sixteenth annual ACM-SIAM symposium on Discrete algorithms
Packet buffering: randomization beats deterministic algorithms
STACS'05 Proceedings of the 22nd annual conference on Theoretical Aspects of Computer Science
Improved Online Algorithms for Multiplexing Weighted Packets in Bounded Buffers
AAIM '09 Proceedings of the 5th International Conference on Algorithmic Aspects in Information and Management
A survey of buffer management policies for packet switches
ACM SIGACT News
Scheduling packets with values and deadlines in size-bounded buffers
COCOA'10 Proceedings of the 4th international conference on Combinatorial optimization and applications - Volume Part I
Bounded delay packet scheduling in a bounded buffer
Operations Research Letters
Scheduling Packets with Values and Deadlines in Size-Bounded Buffers
Journal of Combinatorial Optimization
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We study the online problem of multiplexing packets with arbitrary deadlines in bounded multi-buffer switch. In this model, a switch consists of m input buffers each with bounded capacity B and one output port. Each arriving packet is associated with a value and a deadline that specifies the time limit till the packet can be transmitted. At each time step the switch can select any non-empty buffer and transmit one packet from that buffer. In the preemptive model, stored packets may be preempted from their buffers due to lack of buffer space or discarded due to the violation of the deadline constraints. If preemption is not allowed, every packet accepted and stored in the buffer must be transmitted before its deadline has expired. The goal is to maximize the benefit of the packets transmitted by their deadlines. To date, most models for packets with deadlines assumed a single buffer. To the best of our knowledge this is the first time a bounded multi-buffer switch is used with arbitrary deadline constraints Our main result is a 9.82-competitive deterministic algorithm for packets with arbitrary values and deadlines. Note that the greedy algorithm is not competitive. For the non-preemptive model we present a 2-competitive deterministic algorithm for the unit value packets. For arbitrary values we present a randomized algorithm whose competitiveness is logarithmic in the ratio between the largest and the smallest value of the packets in the sequence