Book ChapterDOI
Scheduling algorithms for a mixture of real-time and non-real-time data in HDR
TLDR
The main conclusion is that intelligent scheduling algorithms in conjunction with token based rate control provide an efficient framework for supporting a mixture of real-time and non-real-time data applications in a single carrier.Abstract:
High Data Rate (HDR) technology has recently been proposed as an overlay to CDMA as a means of providing packet data service to mobile users. In this paper, we study various scheduling algorithms for a mixture of real-time and non-real-time data over HDR/CDMA and compare their performance. We study the performance with respect to packet delays and also average throughput, where we use a token based mechanism to give minimum throughput guarantees. We find that a rule which we call the exponential rule performs well with regard to both these criteria. (In a companion paper, we show that this rule is throughput-optimal, i.e., it makes the queues stable if it is feasible to do so with any other scheduling rule). Our main conclusion is that intelligent scheduling algorithms in conjunction with token based rate control provide an efficient framework for supporting a mixture of real-time and non-real-time data applications in a single carrier.read more
Citations
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Journal ArticleDOI
Opportunistic beamforming using dumb antennas
TL;DR: This work shows that true beamforming gains can be achieved when there are sufficient users, even though very limited channel feedback is needed, and proposes the use of multiple transmit antennas to induce large and fast channel fluctuations so that multiuser diversity can still be exploited.
Journal ArticleDOI
A framework for opportunistic scheduling in wireless networks
TL;DR: It is demonstrated via simulation that opportunistic scheduling schemes result in significant performance improvement compared with non-opportunistic alternatives.
Journal ArticleDOI
Cell Association and Interference Coordination in Heterogeneous LTE-A Cellular Networks
TL;DR: New paradigms for design and operation of heterogeneous cellular networks, focusing on cell splitting, range expansion, semi-static resource negotiation on third-party backhaul connections, and fast dynamic interference management for QoS via over-the-air signaling are described.
Proceedings ArticleDOI
UCAN: a unified cellular and ad-hoc network architecture
TL;DR: This paper proposes the Unified Cellular and Ad-Hoc Network (UCAN) architecture for enhancing cell throughput, while maintaining fairness, and refine the 3G base station scheduling algorithm so that the throughput gains of active clients are distributed proportional to their average channel rate.
Journal ArticleDOI
User-level performance of channel-aware scheduling algorithms in wireless data networks
TL;DR: In this article, the performance at the flow level in a dynamic setting with random finite-size service demands is evaluated by means of a multiclass Processor-Sharing model where the total service rate varies with the total number of users and the model provides explicit formulas for the distribution of the number of active users of the various classes, the mean response times, the blocking probabilities, and the throughput.
References
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Charging and rate control for elastic traffic
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Data throughput of CDMA-HDR a high efficiency-high data rate personal communication wireless system
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On Positive Harris Recurrence of Multiclass Queueing Networks: A Unified Approach Via Fluid Limit Models
TL;DR: In this paper, it was shown that a queueing network is positive Harris recurrent if the corresponding fluid limit model eventually reaches zero and stays there regardless of the initial system configuration, and that single class networks, multiclass feedforward networks and first-buffer-first-served preemptive resume discipline in a reentrant line are positive Harris-rewarded under the usual traffic condition.
Journal ArticleDOI
Dynamic server allocation to parallel queues with randomly varying connectivity
TL;DR: In a system with a single buffer per queue, an allocation policy is obtained that maximizes the throughput and minimizes the delay when the arrival and service statistics of different queues are identical.