Читать книгу Fog Computing - Группа авторов - Страница 24

Besides utilizing UEs as computing-based fog servers, UE-based fog computing nodes (UE-fog nodes) are also the ideal networking service providers. For example, replays of soccer matches, which catch important moments of the game, haver become an indispensable element of the sports game for the fans both inside or outside the stadium. Fundamentally, the audience members download the replay video to their UEs via the Internet. However, considering that there can be a large number of requests coming from the audience, the local wi-fi or cellular base stations may not be able to provide sufficient speed, especially when the audience demands high-quality or even ultra-high-quality videos. In order to address this problem, the application can host fog servers in the UEs of the audience to support the SDN mechanism, which allows the service provider to establish a local ad-hoc content caching group among the fans in the stadium and its surrounding areas toward reducing the burden of both the ISP and the soccer replays service provider [35].