  Virtual reality (VR) is becoming prevalent with a plethora of applications in
education, healthcare, entertainment, etc. To increase the user mobility, and
to reduce the energy consumption and production cost of VR head mounted
displays (HMDs), wireless VR with edge-computing has been the focus of both
industry and academia. However, transferring large video frames of VR
applications with their stringent Quality of Service (QoS) requirements over
wireless network requires innovations and optimizations across different
network layers. In order to develop efficient architectures, protocols and
scheduling mechanisms, the traffic characteristics of various types of VR
applications are required. In this paper, we first compute the theoretical
throughput requirements of an ideal VR experience as well as a popular VR HMD.
We then examine the traffic characteristics of a set of VR applications using
an edge-enabled Wi-Fi network. Our results reveal interesting findings that can
be considered in developing new optimizations, protocols, access mechanisms and
scheduling algorithms.
