Coexistence of Cognitive Small Cell and WiFi System: A Traffic Balancing Dual‐Access Resource Allocation Scheme

Abstract

We consider a holistic approach for dual-access cognitive small cell (DACS) networks, which uses the LTE air interface in both licensed and unlicensed bands. In the licensed band, we consider a sensing-based power allocation scheme to maximize the sum data rate of DACSs by jointly optimizing the cell selection, the sensing operation, and the power allocation under the interference constraint to macrocell users. Due to intercell interference and the integer nature of the cell selection, the resulting optimization problems lead to a nonconvex integer programming. We reformulate the problem to a nonconvex power allocation game and find the relaxed equilibria, quasi-Nash equilibrium. Furthermore, in order to guarantee the fairness of the whole system, we propose a dynamic satisfaction-based dual-band traffic balancing (SDTB) algorithm over licensed and unlicensed bands for DACSs which aims at maximizing the overall satisfaction of the system. We obtain the optimal transmission time in the unlicensed band to ensure the proportional fair coexistence with WiFi while guaranteeing the traffic balancing of DACSs. Simulation results demonstrate that the SDTB algorithm could achieve a considerable performance improvement relative to the schemes in literature, while providing a tradeoff between maximizing the total data rate and achieving better fairness among networks.

Micro Operator Design Pattern in 5G SDN/NFV Network

“…Compared with other ML models, execution speed is a major advantage. To quantify uncertain information and dataset, the paper uses entropy as a method to gauge uncertainty and level of chaos in (1). Entropy is a measure of the impurity in a collection of training examples.…”

A Tactic for Architectural Exploitation of Indoor Small Cells for Dynamic Spectrum Sharing in 5G

“…In [8], authors have studied the impact of SC bandwidth requirements on strategic operators and showed that by imposing a required minimum bandwidth allocation on small cells, the optimal bandwidth allocation strategies of service providers can change dramatically. Authors in [9] studied the existence of both licensed and unlicensed spectrum on SCs. In [10], authors have studied the capacity performances of an SBS by varying the number and the characteristics of operating spectrum bands of an SBS.…”