The past decade has witnessed an ever-growing data demand in the wireless networks, which imposes a huge burden on the wireless traffic and causes a severe interference among users. To alleviate the peak traffic, the wireless caching is emerging as a promising technology by exploring the caching benefits at the wireless edge nodes (such as base stations, mobile users, etc). Leveraging the local memories distributed across the network, the edge node can prefetch its popular content from the server during the off-peak time, thereby reducing the traffic burden and improving the delivery latency during the peak time. Different from the web caching, wireless caching, operated in the physical layer, attains significant gains integrated with advanced physical-layer coding technologies. This talk will focus on the linear network coded wireless caching, which consists of linear network coding assisted Cache Placement Phase and signal-space alignment enabled Content Delivery Phase. Following the spirit of linear network coding, the wireless caching scheme can boost the degree-of-freedom performance by exploring the structure of wireless interference. The present study serves as a first foray into the investigation of linear network coding assisted caching networks.
Dr. Shi Long is currently a Postdoctoral Research Fellow with Science, Mathematics and Technology Cluster at the Singapore University of Technology and Design. He received his Ph.D. degree from the University of New South Wales, Australia. His research interests include wireless caching, physical-layer network coding, and channel coding.