Realization of Wireless Internet Telephony and Streaming Multimedia

To realize wireless Internet Telephony and Streaming Multimedia in a highly mobile environment while providing proper quality of service, an experimental testbed emulating a wireless internet has been built. Different functionalities such as signaling, registration, configuration, dynamic binding, location management, flexible streaming application have been designed, prototyped and experimented using extensions of standard IETF protocols such as SIP, SDP, RTP, RTSP, MGCP, variants of Mobile-IP and IP multicast. This testbed allows establishing multimedia calls between IP mobiles, integration between IP and PSTN endpoints, and broadcasting streaming multimedia in a wireless and mobile environment. This paper describes some of the components of the testbed, highlights the experiences while building this testbed and discusses performance measurement from the prototype which could be useful to wireless carriers and operators who plan to build a similar testbed to realize features and capabilities of mobile wireless Internet. Experiences obtained while building a testbed would provide enough insight for real deployment.