Recently, we proposed an interference-aware channel segregation based dynamic channel assignment (IACS-DCA). In IACS-DCA, each base station (BS) measures the instantaneous co-channel interference (CCI) power on each available channel, computes the moving average CCI power using past CCI measurement results, and selects the channel having the lowest moving average CCI power. In this way, the CCI-minimized channel reuse pattern can be formed. In this paper, we introduce the autocorrelation function of channel reuse pattern, the fairness of channel reuse, and the minimum co-channel BS distance to quantitatively examine the channel reuse pattern formed by the IACS-DCA. It is shown that the IACS-DCA can form a CCI-minimized channel reuse pattern in a distributed manner and that it improves the signal-to-interference ratio (SIR) compared to the other channel assignment schemes.

No abstract

No abstract

In this paper, we aim at solving the co-channel interference (CCI) between cells in heterogeneous networks (HetNets), employing an interference-aware channel segregation based dynamic channel assignment (IACS-DCA). To improve the energy efficiency in HetNet, a distributed ON/OFF switching algorithm for BSs is proposed in which each BS selects ON/OFF strategy using game-theory. We combine these two algorithms by using the beacon signal. The beacon signal contains the traffic load information to be used for user equipment (UE) association when BS ON/OFF algorithm is employed and it is used for measuring the instantaneous beacon signal in IACS-DCA. We show by computer simulation that by combining IACS-DCA and distributed ON/OFF switching algorithms for BSs, high transmission quality is achieved. Keywords: channel segregation, dynamic channel assignment, co-channel interference, heterogeneous network Classification: Terrestrial Wireless Communication/Broadcasting Technologies "Interference-aware channel segregation based dynamic channel assignment for wireless networks," IEICE Trans. References