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To offload congested base stations (BSs) in the cellular network, deploying low-power BSs overlaid with existing high-power BSs that forms the heterogeneous cellular network (HCN) with multiple tiers, has been widely considered in the literature. For analytical tractability, the locations of BSs are often modeled as the independent Poisson point process (PPP). However, the independence assumption...
Nowadays, the emerging hyper-dense heterogeneous network (HetNet) is an effective solution to building an easy-access wireless communication environment. In the hyper-dense HetNet, however, the inescapable handoff procedure is the key to its success. An effective handoff algorithm can not only achieve the goal of load-balancing but also enhance the overall system capacity. In this paper, we proposed...
Device-to-Device (D2D) communications underlaying cellular networks can improve the network capacity and spectrum efficiency by sharing the cellular resources in the direct-transmission mode. However, the stringent interference between D2D and cellular systems can seriously repress the overall performance improvement. In this paper, we aim to solve this dilemma by applying the concept of differentiated...
To meet the explosive demands of wireless access, existing cellular networks are under a revolutionary change from macro-only homogeneous networks to heterogeneous cellular networks (HCNs) with small cells added into current infrastructure. Since small-cell base stations (SBSs) transmit with a much small power than the macro base stations (MBSs), the cell association scheme based on received signal...
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