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    • 29. 发明授权
    • Coexistence primitives in power line communication networks
    • 电力线通信网络中的共存原语
    • US09231658B2
    • 2016-01-05
    • US13923097
    • 2013-06-20
    • Texas Instruments Incorporated
    • Kumaran VijayasankarRamanuja VedanthamTarkesh Pande
    • H04J3/02H04B3/54
    • H04B3/544H04B2203/5408H04B2203/5433H04B2203/5445H04L12/413
    • Systems and methods for setting a Network Allocation Vector (NAV) in a PLC node are disclosed. In a PLC standard, coexistence is achieved by having the nodes detect a common preamble and backing off by a Coexistence InterFrame Space (cEIFS) time period to help the node to avoid interfering with the other technologies. In one embodiment, a PHY primitive is sent from the PHY to the MAC know that there has been a preamble detection. A two-level indication may be used—one indication after receiving the preamble and other indication after decoding the entire frame. The MAC sets NAV to EIFS if a native preamble is detected. The MAC sets NAV to cEIFS if only a coexistence preamble is detected or if a non-native preamble is detected.
    • 公布了在PLC节点中设置网络分配向量(NAV)的系统和方法。 在PLC标准中,通过使节点检测到公共前同步码并通过共存帧间空间(cEIFS)时间段进行后退来实现共存,以帮助节点避免干扰其他技术。 在一个实施例中,PHY原语从PHY发送到MAC,知道已经有前导码检测。 可以使用两级指示 - 在解码整个帧之后接收到前导码和其他指示之后的一个指示。 如果检测到本机前导码,则MAC将NAV设置为EIFS。 如果仅检测到共存前导码或者是否检测到非本地前导码,则MAC将NAV设置为cEIFS。