Queue-Aware Transmission Scheduling for Cooperative Wireless Communications

Queue-aware transmission scheduling for cooperative wireless communications with sub-fading-block scheduling to better balance load and capacity in low mobility environments is investigated. The scheduling problem for joint cooperation scheduling and resource allocation is formulated as a constraine...

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Bibliographic Details
Published in:IEEE transactions on communications Vol. 63; no. 4; pp. 1149 - 1161
Main Authors: Ning Wang, Gulliver, T. Aaron
Format: Journal Article
Language:English
Published: New York IEEE 01.04.2015
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Algorithms
Buffers
cooperative communications
discrete search
Fading
Heuristic
Heuristic algorithms
Integers
modulation and coding scheme
nonlinear integer programming
Nonlinearity
Optimization
Production scheduling
QoS provisioning
queue-aware scheduling
Queues
Relays
Resource management
Scheduling
Search algorithms
sub-fading-block scheduling
Wireless communication
Wireless networks
modulation and coding scheme
Cooperative communications
queue-aware scheduling
QoS provisioning
discrete search
nonlinear integer programming
sub-fading-block scheduling
ISSN:0090-6778, 1558-0857
Online Access:Get full text
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Summary:Queue-aware transmission scheduling for cooperative wireless communications with sub-fading-block scheduling to better balance load and capacity in low mobility environments is investigated. The scheduling problem for joint cooperation scheduling and resource allocation is formulated as a constrained nonlinear integer optimization problem over an integer convex set based on a source buffer queueing analysis. It is shown that with queue-aware scheduling, the state transition matrix of the source buffer queue has a highly dynamic form. As a result, the objective function of the optimization problem does not have an analytic form in general. The constrained discrete Rosenbrock search algorithm, which is a gradient-free directed discrete search algorithm, is employed to solve the nonlinear integer problem. The output of the directed integer search algorithm is used for queue-aware transmission scheduling for the cooperative system. Numerical results are presented which show that, for cooperative transmission scheduling, the Rosenbrock search based queue-aware algorithm significantly outperforms the equal partitioning, random partitioning, and gradient-based algorithms under quasi-static channel assumptions. Under practical system conditions with unsaturated traffic, the proposed queue-aware scheduling scheme achieves the true optima, and maintains a large stability region for the buffer queue, over a wide range of channel and traffic conditions. It is also shown that when fading channel dynamics are taken into consideration, the performance of the proposed queue-aware scheduling algorithm significantly outperforms fixed relaying and fixed direct transmission channel-aware scheduling strategies.
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ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2015.2396916