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A Novel Relay Based Load Balancing Scheme and Performance Analysis Using Markov Models

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4 Author(s)
Jiang Fan ; Key Lab. of Universal Wireless Commun. Minist. of Educ., Beijing Univ. of Posts & Telecommun., Beijing ; Tian Hui ; Xu Haibo ; Wang Xijun

In this paper, an effective relay based load balancing scheme, employing traffic transferring and channel borrowing, is presented for two-hop cellular relaying networks. In the proposed scheme, each relay station is allocated a set of real-time traffic channels so as to perform call relaying from a congested cell to another non-congested cell. Moreover, owing to the limited capacity of each relay station, dynamic channel borrowing is adopted to further facilitate load balancing between neighboring cells. With two different relay deployment scenarios considered, a multi-dimensional markov chain model is then developed to evaluate the performance of the proposed scheme. Simulation results demonstrate that the proposed scheme achieves better performance compared with that of the conventional cellular network in terms of call blocking rate.

Published in:

Vehicular Technology Conference, 2009. VTC Spring 2009. IEEE 69th

Date of Conference:

26-29 April 2009