Invention Grant
US08570885B2 Uplink feedback in a multimedia broadcast/multicast services (MBMS) wireless communications system 有权
多媒体广播/多播服务(MBMS)无线通信系统中的上行链路反馈

  • Patent Title: Uplink feedback in a multimedia broadcast/multicast services (MBMS) wireless communications system
  • Patent Title (中): 多媒体广播/多播服务(MBMS)无线通信系统中的上行链路反馈
  • Application No.: US12918158
    Application Date: 2009-02-18
  • Publication No.: US08570885B2
    Publication Date: 2013-10-29
  • Inventor: Qi ZhouDan Shang
  • Applicant: Qi ZhouDan Shang
  • Applicant Address: NL Eindhoven
  • Assignee: NXP, B.V.
  • Current Assignee: NXP, B.V.
  • Current Assignee Address: NL Eindhoven
  • International Application: PCT/IB2009/050670 WO 20090218
  • International Announcement: WO2009/104146 WO 20090827
  • Main IPC: G01R31/08
  • IPC: G01R31/08 H04J1/16
Uplink feedback in a multimedia broadcast/multicast services (MBMS) wireless communications system
Abstract:
A technique for managing uplink feedback involves establishing a channel quality threshold range, for example, in terms of a channel quality indicator (CQI), broadcasting the channel quality threshold range to the mobile stations and using the channel quality threshold range to control the feedback of channel quality information. For example, the mobile stations determine their own mobile station-specific CQI and then generate CQI feedback information in response to a comparison between their own mobile station-specific CQI and the CQI threshold range. In an embodiment, if the CQI of a mobile station falls within the CQI threshold range, then the mobile station can transmit a reduced set of CQI feedback information. For example, the reduced set of CQI feedback information may be a single bit that indicates whether the mobile station-specific CQI is greater than or less than a CQI threshold or whether the CQI has crossed a CQI threshold.
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