JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM ›› 2016, Vol. 23 ›› Issue (6): 41-46.doi: 10.1016/S1005-8885(16)60068-7

• Wireless • Previous Articles     Next Articles

Coverage analysis of cache-enabled small cell networks with stochastic geometry methods

  

  • Received:2016-09-26 Revised:2016-12-21 Online:2016-12-31 Published:2016-12-30
  • Contact: Qi ZHANG E-mail:zhangqi2015@bupt.edu.cn
  • Supported by:
    National Natural Science Foundation of China

Abstract: Caching popular content in the storage of small cells is deemed as an efficient way to decrease latency, offload backhaul and satisfy user’s demands. In order to investigate the performance of cache-enabled small cell networks, coverage probability is studied in both single-point transmission and cooperative multipoint (CoMP) transmission scenarios. Meanwhile, the caching distribution modeled as Zipf and uniform distribution are both considered. Assuming that small base stations (SBSs) are distributed as a homogeneous Poisson point process (HPPP), the closed-form expressions of coverage probability are derived in different transmission cases. Simulation results show that CoMP transmission achieves a higher coverage probability than that of single-point transmission. Furthermore, Zipf distribution-based caching is more preferable than uniform distribution-based caching in terms of coverage probability.

Key words: caching, coverage probability, single-point transmission, CoMP transmission, stochastic geometry

CLC Number: