Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Exploiting medium access diversity in rate adaptive wireless LANs
Proceedings of the 10th annual international conference on Mobile computing and networking
Opportunistic beamforming using dumb antennas
IEEE Transactions on Information Theory
CDMA/HDR: a bandwidth efficient high speed wireless data service for nomadic users
IEEE Communications Magazine
Admission control for statistical QoS: theory and practice
IEEE Network: The Magazine of Global Internetworking
Engineering of Software-Intensive Systems: State of the Art and Research Challenges
Software-Intensive Systems and New Computing Paradigms
Downlink scheduling for multiclass traffic in LTE
EURASIP Journal on Wireless Communications and Networking - 3GPP LTE and LTE Advanced
On scheduling in multi-channel wireless downlink networks with limited feedback
Allerton'09 Proceedings of the 47th annual Allerton conference on Communication, control, and computing
Quality of Service in mobile ad hoc networks: a survey
International Journal of Ad Hoc and Ubiquitous Computing
Dynamic spectrum access and management
IEEE Wireless Communications
Cross-layer channel-aware approaches for modern wireless networks
MACOM'10 Proceedings of the Third international conference on Multiple access communications
A unified approach to optimizing performance in networks serving heterogeneous flows
IEEE/ACM Transactions on Networking (TON)
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We propose a novel class of opportunistic scheduling disciplines to handle mixes of real-time and best-effort traffic at a wireless access point. The objective is to support probabilistic service rate guarantees to real-time sessions while still achieving opportunistic throughput gains across users and traffic types. We are able to show a "tight" stochastic lower bound on the service a real-time session would receive assuming that the users possibly heterogenous capacity variations are known or estimated, and are fast fading across slots. Such bounds are critical to enabling predictable quality of service and thus the development of complementary resource management and admission control strategies. Idealized simulation results show that the scheme can achieve 80%-90% of the maximum system throughput capacity while satisfying the quality of service (QoS) requirements for real-time traffic, and that the degradation in system throughput is slow in the number of real-time users, i.e., inter- and intra-class opportunism are being properly exploited. We note however, that there is a tradeoff between strictness of QoS requirements and the overall system throughput one can achieve. Thus if QoS requirements on real-time traffic are very tight, one would need to simply give priority to real-time traffic, and in the process lose the throughput gains of opportunism.