Analytical study of a service discovery system based on an LTE-A D2D implementation

This work adapts the paradigm of Cloud Computing over the framework of Device-to-Device (D2D) proximity-based communications in order to offer proximity services to LTE network subscribers, and offload major traffic from the core network. Our proposed work introduces a platform in which mobile devices can offer network services to other nearby devices, and thus act as service end points, or mobile cloudlets. Devices seeking particular services can discover these providers and communicate with them directly, but with the help of the LTE network whose role is limited to assisting in the service provider discovery process. D2D can introduce several positive aspects within any community, through (1) helping tourism by making it seamless to obtain needed services; (2) improving social ties among the society members; and (3) helping the economy through creating a more conducive environment for thriving personal-level businesses. From an implementation point of view, our solution is in line with the 3GPP standards, utilizes the 3GPP-proposed network elements designated for offering proximity based services, and introduces no changes to the rest of the LTE system. Our experimental results proved the effectiveness of our system in helping mobile users discover needed services offered by nearby providers, and therefore communicate directly in a peer-to-peer fashion.