Modeling of ultra-dense heterogeneous network and time-domain interference coordination analysis

• Main Authors: Ye Peng, Li Li, Li Haiping, Wang Bin
• Format: Article
• Language: English
• Published: Academic Journals Center of Shanghai Normal University 2017-04-01
• Series: Journal of Shanghai Normal University (Natural Sciences)
• Subjects: heterogeneous network; stochastic theory; enhanced inter-cell interference coordination; cell range expansion
• Online Access: http://qktg.shnu.edu.cn/zrb/shsfqkszrb/ch/reader/view_abstract.aspx?file_no=20180205&flag=1

A system analysis model for ultra-dense heterogeneous network is established using the space Poisson point process based on stochastic theory.In this model,by analyzing the interference types of the extended and non-expanded areas of the cell caused by the cell-wide extension technology and the enhanced inter-cell interference coordination technology in heterogeneous network,the expressions of performance indicators such as outage probability and spectrum efficiency in different regions are deduced.A method of dynamically allocating almost blank subframes(ABS) is proposed for the case when the user equipment access selection and the resource allocation methods are too complicated in heterogeneous networks with almost blank subframes.The simulation results show that compared with the fixed ABS algorithm,the proposed scheme can improve the average ergodic capacity of the system by 10%-25% while taking into account the fairness of the users in each area.It also improves the cross layer interference of extended region's user.