MOBILE VIDEO CHAT
In this section we discuss various components —
mobile phone transmitter and receiver, video
chat software, access segment, and core network
— involved in mobile video chat over cellular
networks and affecting the performance of video
chat. The access uplink-downlink segment is a
wireless radio link. The core network is wired.
We broadly divide the network into three
parts: mobile devices, application provider, and
mobile carriers. We discuss them in detail in the
next few subsections.