公开(公告)号：US20160198317A1

公开(公告)日：2016-07-07

申请号：US14988110

申请日：2016-01-05

Applicant: Apple Inc.

Inventor： Guoqing LI ,  Su Khiong YONG ,  Yong LIU ,  Christiaan A. Hartman ,  Gregory CHAPMAN ,  Eric San Fung LEE ,  Chiu Ngok E. WONG

IPC: H04W4/08 ,  H04W72/04

CPC classification number: H04W4/08

Abstract: In order to flexibly manage and broadcast content to electronic devices in a multicast group, a multicast group management protocol allows one or more multicast group masters to be specified. In addition to controlling membership in the multicast group, a multicast group master can define or specify a multicast session, in which content from one or more sources is broadcast to at least a subset of the electronic devices or sinks in the multicast group. The multicast group management protocol supports concurrent broadcasts of content to different multicast sessions. Moreover, the broadcasts in the different multicast sessions may have different: priorities, encoding techniques, quality-of-service policies, reliability, and/or number of parity bits. For example, the different encoding techniques may include different layers in H.264 Scalable Video Coding. Alternatively or additionally, the different number of parity bits may be associated with application layer forward error correction.

Abstract translation: 为了灵活地管理和广播内容到组播组中的电子设备，组播组管理协议允许指定一个或多个组播组主机。 除了控制多播组中的成员资格之外，多播组主机可以定义或指定多播会话，其中来自一个或多个源的内容广播到多播组中的电子设备或汇点的至少一个子集。 组播组管理协议支持对不同组播会话的内容的并发广播。 此外，不同多播会话中的广播可以具有不同的优先级，编码技术，服务质量策略，可靠性和/或奇偶校验位数。 例如，不同的编码技术可以包括H.264可缩放视频编码中的不同层。 或者或另外，不同数量的奇偶校验位可以与应用层前向纠错相关联。