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arXiv · 0808.0745

Relay-Assisted User Scheduling in Wireless Networks with Hybrid-ARQ

Caleb K. Lo·John J. Hasenbein·Sriram Vishwanath·Robert W. Heath Jr
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Abstract

This paper studies the problem of relay-assisted user scheduling for downlink wireless transmission. The base station or access point employs hybrid automatic-repeat-request (HARQ) with the assistance of a set of fixed relays to serve a set of mobile users. By minimizing a cost function of the queue lengths at the base station and the number of retransmissions of the head-of-line packet for each user, the base station can schedule an appropriate user in each time slot and an appropriate transmitter to serve it. It is shown that a priority-index policy is optimal for a linear cost function with packets arriving according to a Poisson process and for an increasing convex cost function where packets must be drained from the queues at the base station.

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Caleb K. Lo, John J. Hasenbein, Sriram Vishwanath, Robert W. Heath Jr. 2008-08-05. Relay-Assisted User Scheduling in Wireless Networks with Hybrid-ARQ. https://doi.org/10.1109/tvt.2009.2027711

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