4G Femtocells: Resource Allocation and Interference by Haijun Zhang, Xiaoli Chu, Xiangming Wen

By Haijun Zhang, Xiaoli Chu, Xiangming Wen

This short examines source allocation and interference administration for 4G femtocells. It introduces 4G femtocells within the context of 4G cellular networks and discusses similar technical demanding situations in source allocation and interference administration. issues contain ant colony set of rules dependent downlink source allocation, clever scheduling and gear keep an eye on, uplink and downlink for two-tier networks, caliber of provider (QoS) constraints and the cross-tier interference constraint. The authors current algorithms to relieve universal femtocell-related difficulties akin to subchannel energy allocation. The complexity of the proposed source allocation algorithms is analyzed, and the effectiveness of the proposed algorithms is tested by way of simulations. This concise and functional booklet at once addresses universal difficulties in relation to femtocells and source administration. It serves as a great tool for researchers within the box. Advanced-level scholars or pros drawn to femtocells and networks also will locate the content material helpful.

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8), at most one element of ak,n can take value of 1. 14) where uˆk,n is the best user for channel n in femtocell k to assign, and the assignment of subchannel n in femtocell k is indicated by aˆ k,n = {aˆk,1,n , aˆk,2,n , . . , aˆk,F,n }, where aˆk,u,n = 1, if u = uˆk,n , 0, otherwise. 15) In order to remove the dependence of the subchannel assignment on the assumed pFk,u,n gFF k,k,u,n , and then the transmit power Ik,u,n u γˆk,n Ik,u,n given by gFF . 16) 28 3 Cross-Tier Interference Pricing Based Uplink Resource Allocation in Two-Tier.

Andrews, “Femtocell networks: A survey,” IEEE Commun. , vol. 46, no. 9, pp. 59–67, 2008. 4. V. Chandrasekhar, J. Andrews, andA. Gatherer, “Femtocell networks: a survey,” Communications Magazine, IEEE, vol. 46, no. 9, pp. 59–67, september 2008. 5. K. Son, S. Lee, Y. Yi, and S. Chong, “Refim: A practical interference management in heterogeneous wireless access networks,” IEEE Journal on Selected Areas in Communications, vol. 29, no. 6, pp. 1260–1272, 2011. 6. V. Chandrasekhar, J. G. Andrews, T. Muharemovic, Z.

In [10], a hybrid frequency assignment scheme is proposed for femtocells deployed within coverage of a macrocell. In [11], distributed channel selection schemes are proposed for femtocells to avoid inter-cell interference, at the cost of reduced frequency reuse efficiency. In [12], a subchannel allocation algorithm based on a potential game model is proposed to mitigate both co-tier and cross-tier interference. Recently, several studies considering both power and subchannel allocation in femtocells have been reported.

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