Ricerc@Sapienza

This paper investigates the benefits of flexible
resource allocation when performing HTTP-based Adaptive
Streaming (HAS) across cellular systems such as Long Term
Evolution (LTE). To guarantee video fluidity in the presence of
fluctuations of the instantaneous video source rate and channel
capacity, we consider a HAS based proxy video manager and
resource controller located at the cellular base station. Based
on the channel quality observed by mobile clients, the manager
allocates the wireless bandwidth to mobile clients for transmitting

We investigate the problem of providing a video streaming service to mobile users in an heterogeneous cellular network composed of micro e-NodeBs (eNBs) and macro e-NodeBs (MeNBs). More in detail, we target a cross-layer dynamic allocation of the bandwidth resources available over a set of eNBs and one MeNB, with the goal of reducing the delay per chunk experienced by users. After optimally formulating the problem of minimizing the chunk delay, we detail the Cross LayEr Video stReaming (CLEVER) algorithm, to practically tackle it.