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    • 27. 发明授权
    • Hybrid WDM-TDM passive optical network
    • 混合WDM-TDM无源光网络
    • US08953942B1
    • 2015-02-10
    • US13458360
    • 2012-04-27
    • Cedric F. LamRyohei UrataHong LiuYut Loy Chan
    • Cedric F. LamRyohei UrataHong LiuYut Loy Chan
    • H04J14/00H04J14/08
    • H04J14/0282H04J14/0256
    • A technique for providing time division multiplexing (“TDM”) and wavelength division multiplexing (“WDM”) communication services to customer premises (“CP”) over a passive optical network (“PON”) includes multiplexing a downstream TDM signal with downstream WDM signals onto a fiber trunk line coupled between a central office and a remote node (“RN”), separating the downstream WDM signals from the downstream TDM signal at the RN with a wavelength selective filter, power splitting the downstream TDM signal at the RN onto a plurality of fiber access lines as split TDM signals; and recombining each of the WDM signals with a corresponding one of the split TDM signals onto a corresponding one of the fiber access lines.
    • 通过无源光网络(“PON”)向客户驻地(“CP”)提供时分多路复用(“TDM”)和波分复用(“WDM”)通信服务的技术包括将下游TDM信号与下行WDM 信号到耦合在中心局和远程节点(“RN”)之间的光纤干线上,用下行WDM信号与RN处的下行TDM信号用波长选择滤波器分离,将RN处的下行TDM信号分解功率 多个光纤接入线作为分离TDM信号; 以及将每个所述WDM信号与所述分离的TDM信号中的相应一个信号重新组合到相应的所述光纤接入线路中。
    • 28. 发明授权
    • Support of multiple pre-shared keys in access point
    • 在接入点支持多个预共享密钥
    • US08898474B2
    • 2014-11-25
    • US12359987
    • 2009-01-26
    • Hui ShenXiong JiangAnirban BanerjeeHong LiuTaroon Mandhana
    • Hui ShenXiong JiangAnirban BanerjeeHong LiuTaroon Mandhana
    • H04L9/30H04L29/06H04L9/08H04W12/04H04W88/08
    • H04L9/0844H04L63/061H04L2209/80H04W12/04H04W88/08
    • A method of operating an access point (AP) configured to support multiple pre-shared keys at a given time to authenticate its associated client devices. Each client device associated with the AP is provisioned with a key. To authenticate the client device that attempts to connect to the AP, the AP determines which pre-shared key (PSK) of the multiple supported pre-shared keys (PSKs), if any, matches information including the key received from the client device. When the information matches, the client device is allowed to connect to the AP. Provisioning the AP with multiple PSKs allows selectively disconnecting associated client devices from the AP. The AP may be configured to support PSKs of different lifetime and complexity. Removing a PSK of the multiple PSKs supported by the AP and disconnecting a client device that uses this PSK does not disconnect other client devices using different keys to access the AP.
    • 一种操作接入点(AP)的方法,所述接入点(AP)被配置为在给定时间支持多个预共享密钥以验证其相关联的客户端设备。 与AP相关联的每个客户端设备都配置了一个密钥。 为了验证尝试连接到AP的客户端设备,AP确定多个支持的预共享密钥(PSK)的哪个预共享密钥(PSK)(如果有的话)匹配包括从客户端设备接收的密钥的信息。 当信息匹配时,允许客户端设备连接到AP。 为AP配置多个PSK可以有选择地断开与AP的关联的客户端设备。 AP可以被配置为支持不同寿命和复杂性的PSK。 删除AP支持的多个PSK的PSK并断开使用此PSK的客户端设备不会使用不同的密钥断开其他客户端设备访问AP。
    • 30. 发明授权
    • Fiber diagnosis system for WDM optical access networks
    • WDM光接入网络的光纤诊断系统
    • US08693866B1
    • 2014-04-08
    • US13355233
    • 2012-01-20
    • Cedric F. LamBen W. SeguraRyohei UrataHong Liu
    • Cedric F. LamBen W. SeguraRyohei UrataHong Liu
    • H04B10/00
    • H04B10/071H04Q11/0067H04Q2011/0083
    • A technique for detecting a fiber fault in a WDM optical access network includes launching a test signal into a fiber trunk line linking a central office (“CO”) to a remote node (“RN”) of the WDM optical access network. The test signal is generated by an optical time domain reflectometry unit to simultaneously fault test fiber access lines linking the RN to customer premises. The test signal is separated from downstream WDM signals at the RN. The test signal is power split at the RN into a plurality of access line test signals. The access line test signals are each recombined with a corresponding one of the downstream WDM signals onto a corresponding one of the fiber access lines. Test signal reflections are received at the CO from the fiber access lines as a reflection signature and analyzed to identify a location of the fiber fault.
    • 一种用于检测WDM光接入网络中的光纤故障的技术包括将测试信号发射到连接WDM光接入网络的中心局(“CO”)到远程节点(“RN”)的光纤干线。 测试信号由光时域反射测量单元产生,以同时故障测试将RN连接到客户驻地的光纤接入线路。 测试信号与RN处的下行WDM信号分离。 测试信号在RN处被分配成多个接入线测试信号。 接入线路测试信号各自与下行WDM信号中的相应一个信号复合到相应的一条光纤接入线路上。 在来自光纤接入线路的CO处接收到测试信号反射作为反射特征,并进行分析以识别光纤故障的位置。