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    • 3. 发明授权
    • Method and apparatus for link adaptive multicast/broadcast transmission and reception
    • 用于链路自适应组播/广播发送和接收的方法和装置
    • US08605610B2
    • 2013-12-10
    • US12731370
    • 2010-03-25
    • Sung-Hyun HwangJin Soo WangJae Chul ParkYun Hee Kim
    • Sung-Hyun HwangJin Soo WangJae Chul ParkYun Hee Kim
    • H04L12/26H04H20/71H04W72/04
    • H04L1/0028H04H20/42H04H20/71H04L1/0026H04L1/1607H04L25/0224H04L2001/0093
    • A method and apparatus for adaptively transmitting the same data, i.e., multicast/broadcast data, according to channel quality to a receiving group including one or more terminals that request the same service in a wireless network. A base station obtains feedback on channel quality indications (CQIs) from a plurality of terminals, selects a transmission technique that satisfies desired service quality based on the CQIs, and transmits data to the terminals included in a receiving group by using the selected transmission technique. The CQIs to be transmitted from the terminals in the receiving group to the base station are transmitted through a previously allocated common CQI feedback channel. In the present invention, in order to reduce a CQI feedback channel capacity, the base station does not allocate a common CQI feedback channel with respect to each reception terminal and allocates radio resources according to CQI levels. As radio resources are allocated according to CQI levels, a CQI feedback channel capacity may not be increased even when the number of terminals in the receiving group is increased and adaptive transmission may be efficiently performed.
    • 一种用于根据信道质量将相同数据即组播/广播数据自适应发送到包括在无线网络中请求相同服务的一个或多个终端的接收组的方法和装置。 基站从多个终端获取对信道质量指示(CQI)的反馈,基于CQI选择满足期望的服务质量的传输技术,并且通过使用所选择的传输技术将数据发送到包括在接收组中的终端。 通过先前分配的公共CQI反馈信道来发送从接收组中的终端发送到基站的CQI。 在本发明中,为了降低CQI反馈信道容量,基站不对每个接收终端分配公共CQI反馈信道,根据CQI等级分配无线资源。 由于根据CQI等级分配无线资源,所以即使接收组中的终端数量增加,也可以有效地进行自适应传输,CQI反馈信道容量也不会增加。