Methods and apparatus for transmitting layered and non-layered data via layered modulation
    1.
    发明授权
    Methods and apparatus for transmitting layered and non-layered data via layered modulation 有权
    用于通过分层调制发送分层和非分层数据的方法和装置

    公开(公告)号:US08194796B2

    公开(公告)日:2012-06-05

    申请号:US12607879

    申请日:2009-10-28

    IPC分类号: H04L27/06

    摘要: A media access control (MAC) layer controller can manage base layer data and enhancement layer data in a layered modulation system. The MAC layer controller can process both base layer data and enhancement layer data and map the encoded symbols to a layered modulation constellation when both are present. If data for one of the layers terminates, then the MAC layer controller can generate and supply predetermined stuffing data to the layer lacking additional data. The MAC layer controller can send a control signal to the physical layer hardware to cause the hardware to map the layered signals having the stuffing data to a modified signal constellation. The MAC controller can also generate an overhead message that indicates the occurrence of the stuffing data. The receiver can receive the overhead message and can use the information to configure the receiver for the layered modulation constellation or the modified signal constellation.

    摘要翻译: 媒体访问控制(MAC)层控制器可以在分层调制系统中管理基层数据和增强层数据。 当两者都存在时,MAC层控制器可以处理基本层数据和增强层数据两者并将编码符号映射到分层调制星座。 如果其中一层的数据终止,则MAC层控制器可以生成并向缺少附加数据的层提供预定的填充数据。 MAC层控制器可以向物理层硬件发送控制信号,使得硬件将具有填充数据的分层信号映射到修改的信号星座。 MAC控制器还可以生成指示填充数据的发生的开销消息。 接收机可以接收开销消息,并且可以使用该信息来配置用于分层调制星座或修改的信号星座的接收机。