Cache Partitioning and Caching Strategies for Device-to-Device Caching Systems

The amount of traffic in wireless networks is increasing exponentially, and this problem can be mitigated using device-to-device (D2D) caching technology, which installs a cache on mobile end device. Devices reduce the cell load through self-offloading via content their own D2D offloading others' caches. However, especially early stage systems, limited number devices with small storage might used, it required to develop scheme excellent performance despite size. Regarding popularity, common most users, preference probability values are not concentrated some pieces content, making difficult achieve satisfactory cache. On other hand, when considering individual preferences may contain large for specific based characteristics. In addition, improved by short-term that reflect changes over time or newly created during peak hours. article, hit ratio divided into six parts self- offloading, user preferences, little temporal We also conceptually divide helper areas relation ratio, discuss partitioning proactive strategies according environment.