Invention Grant
US08234547B2 Seamless handover of multicast sessions in internet protocol based wireless networks using staggercasting 有权
基于互联网协议的无线网络中组播会话的无缝切换使用交错

  • Patent Title: Seamless handover of multicast sessions in internet protocol based wireless networks using staggercasting
  • Patent Title (中): 基于互联网协议的无线网络中组播会话的无缝切换使用交错
  • Application No.: US12226799
    Application Date: 2006-04-29
  • Publication No.: US08234547B2
    Publication Date: 2012-07-31
  • Inventor: Hang LiuKumar Ramaswamy
  • Applicant: Hang LiuKumar Ramaswamy
  • Applicant Address: FR Issy les Moulineaux
  • Assignee: Thomson Licensing
  • Current Assignee: Thomson Licensing
  • Current Assignee Address: FR Issy les Moulineaux
  • Agent Robert D. Shedd; Jeffrey M. Navon; Catherine A. Cooper
  • International Application: PCT/US2006/016298 WO 20060429
  • International Announcement: WO2007/130012 WO 20071115
  • Main IPC: H03M13/00
  • IPC: H03M13/00
Seamless handover of multicast sessions in internet protocol based wireless networks using staggercasting
Abstract:
A method and apparatus are described for recovering from loss of an original data packet, including detecting data packet loss, joining a delayed multicast group, receiving a delayed data packet and using the delayed data packet to recover the original data packet that was lost. The delayed data packet is one of a copy of the original data packet, a copy of the original data packet encoded at a lower bit rate or a parity packet. Also described are a method and apparatus for staggercasting including encoding and compressing a first data sequence, packetizing the compressed encoded data sequence to form a data packet, multicasting the data packet to a first multicast group, encoding and compressing a second data sequence, packetizing the compressed encoded second data sequence to form a packet and multicasting the packet delayed by an offset time to a second multicast group.
Information query
Patent Agency Ranking
0/0