公开(公告)号：US20220295155A1

公开(公告)日：2022-09-15

申请号：US17625554

申请日：2019-07-10

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Toshihito FUJIWARA ,  Yasunobu KASAHARA ,  Hidekazu SHIMIZU

IPC: H04N21/6405 ,  H04N21/6408 ,  H04L65/611 ,  H04L65/80

Abstract: The present disclosure is intended to enable efficient content forwarding in an HTTP-based web distribution system while maintaining HTTP, which is unicast.
In the present disclosure, a unicast-multicast conversion device 105 and a multicast-unicast conversion device 104 that are connected, by using a multicast communication network 102, with a network between a content server 106 and a terminal 107 that perform web distribution are provided, and the unicast-multicast conversion device 105 and the multicast-unicast conversion device 104 execute, in both multicast and unicast, forwarding of a content group into which a plurality of contents are grouped.