Delivery of time-critical messages using a multiple copy approach
ACM Transactions on Computer Systems (TOCS)
SIGCOMM '92 Conference proceedings on Communications architectures & protocols
The Tenet real-time protocol suite: design, implementation, and experiences
IEEE/ACM Transactions on Networking (TON)
IEEE Transactions on Parallel and Distributed Systems
Statistical properties of MPEG video traffic and their impact on traffic modeling in ATM systems
LCN '95 Proceedings of the 20th Annual IEEE Conference on Local Computer Networks
RTSS '97 Proceedings of the 18th IEEE Real-Time Systems Symposium
WORDS '94 Proceedings of the 1st Workshop on Object-Oriented Real-Time Dependable Systems
INFOCOM '95 Proceedings of the Fourteenth Annual Joint Conference of the IEEE Computer and Communication Societies (Vol. 3)-Volume - Volume 3
RSVP and integrated services in the Internet: a tutorial
IEEE Communications Magazine
A rough comparison of the IETF and ATM service models
IEEE Network: The Magazine of Global Internetworking
Hi-index | 0.00 |
Backup real-time channels is a technique to provide uninterrupted service in the presence of router failures during real-time transmissions. This technique adds the notion of availability to the concept of QoS (Quality of Service), usually expressed in terms of guaranteed throughput and maximum delays only. Availability comes at the cost of increasing the required resource (bandwidth, buffers) reservations, due to the needs of a backup channel. However, this extra resources reservation is potentially wasted, since fault rates are very low. This paper proposes a systematic method for estimating and optimizing resource reservations. This approach is based on inaccurate failure detection in order to reduce latency is proposed. The cost of inaccurate failure detection is that the backup channel will be activated and utilized unnecessarily upon detection of "false failures". However, the paper shows, through simulations and using MPEG transmission traces, that the percentage of false failures is almost negligible.