抄録
According to the wide spread of the broadband access environment, many kinds of content distribution services have launched. Broadband IP network is good for VoD service, and, it also provides a potential for expanding service area of broadcast application. The overlay network technology can realize hybrid content delivery network using any IP network. In this report, we consider functional elements and delivery methods of the overlay streaming. Also, we design a prototype of content distribution system and examine its performance by preliminary examination.