Femto-cell Research on Network Bilateral Spectrum Allocation Algorithm

Abstract

Spectrum resources are the lifeblood of the development of communication industry. Nowadays, the serious shortage of spectrum resources is becoming more and more serious. Femto-cell is a kind of base station with low signal transmission power and few connected mobile users. It is deployed in areas and rooms where the spectrum coverage of some macro basic websites is weak or in user intensive areas. It is an indispensable part of the next generation wireless communication system. Aiming at the problems of low secondary user income and user selfishness in the traditional static spectrum allocation algorithm, a round based real-time frequency band allocation mathematical model is constructed. The free frequency band of macro cellular base station is divided into time-division sub bands by using orthogonal frequency division multiplexing technology to participate in the auction, so as to quickly allocate the scarce spectrum resources to Femto-cell; Based on the game theory between the supplier and the demander, a fast convergent step-by-step greedy algorithm for price and spectrum allocation is proposed. Simulation results show that compared with traditional generalized first price (GFP) algorithms, this algorithm can achieve conflict free spectrum allocation, has higher practical value and spectrum allocation efficiency, maximizes the utility and efficiency of spectrum allocation, and can achieve a win-win situation of spectrum utilization and spectrum revenue.