A study on user mobility in device to device (D2D) networks through distrubted catching

D2D communication in cellular networks is defined as direct communication between two mobile users without traversing the Base Station (BS) or core network. D2D communication is generally non-transparent to the cellular network and it can occur on the cellular frequencies (i.e., inband) or unlicensed spectrum (i.e., outband). The main aim of this paper is To consider a distributedcaching (Device-to-Device) D2Dnetwork. in which an Owner's file of interest is cached as several parts in the storage of other devices in the network. Here The Owner think that he needs to achieve all these file parts, the portions cached farther away naturally become the performance bottle-neck. This is due to the trust that Main interferers may be near to the receiver than the serving device. Using a simple stochastic geometry model, we concretely demonstrate that this bottleneck can be loosened if the Owners are mobile. Gains obtained from mobility (the ability to move or be moved freely and easily)are quantified in terms of coverage probability.