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    • 96. 发明授权
    • Synchronization of data signals and clock signals for programmable logic devices
    • 用于可编程逻辑器件的数据信号和时钟信号的同步
    • US07557606B1
    • 2009-07-07
    • US12105146
    • 2008-04-17
    • Xiaotao ChenJun ZhaoEric Ting
    • Xiaotao ChenJun ZhaoEric Ting
    • H03K19/173
    • H03K19/1774
    • Techniques for synchronizing data signals and clock signals of a programmable logic device (PLD) are provided. In one example, a method includes preparing an initial configuration of the PLD identifying a plurality of data paths associated with the data signals and a plurality of clock paths associated with the clock signals. The method also includes identifying a hold time violation associated with at least one of the data paths, wherein at least one of the clock signals is used to synchronize the data path. The method further includes selectively adjusting a delay period of a delay element of at least one of the clock paths associated with the clock signal to attempt to correct the hold time violation without concurrently attempting to correct any setup time violation associated with the data path.
    • 提供了用于同步可编程逻辑器件(PLD)的数据信号和时钟信号的技术。 在一个示例中,一种方法包括准备识别与数据信号相关联的多个数据路径和与时钟信号相关联的多个时钟路径的PLD的初始配置。 该方法还包括识别与至少一个数据路径相关联的保持时间违规,其中使用至少一个时钟信号来同步数据路径。 该方法还包括选择性地调整与时钟信号相关联的至少一个时钟路径的延迟元件的延迟周期,以尝试校正保持时间冲突,而不同时尝试校正与数据路径相关联的任何建立时间违规。
    • 97. 发明申请
    • Correlation-Based Rate Adaptation for Communication Networks
    • 通信网络的相关速率适应
    • US20080316926A1
    • 2008-12-25
    • US11767424
    • 2007-06-22
    • Jun ZhaoXia Zhou
    • Jun ZhaoXia Zhou
    • G08C15/00
    • H04L1/0003H04L1/0009H04L1/0643
    • A correlation-based rate adaptation scheme (CORA) is enabled for practical communication devices that provides for communication data rate adaptation in a complex and/or rapidly changing communication environment. Correlations may be determined between adjustable parameters of a communication scheme and one or more performance metrics and/or communication scheme operating regimes. In the context of the correlation-based rate adaptation scheme, adjustable parameters of the communication scheme may be considered as defining a multi-dimensional parameter space, and the determined correlations may be considered as correlation maps that may be used to guide parameter selection and adjustment. The use of correlation maps enables extraction of information from imperfect and/or incomplete measurements, and the information collected in the correlation maps may be used to tune corresponding communication scheme parameters to enhance communication performance.
    • 对于在复杂和/或快速变化的通信环境中提供通信数据速率适配的实际通信设备,启用基于相关的速率适配方案(CORA)。 可以在通信方案的可调节参数和一个或多个性能度量和/或通信方案操作方案之间确定相关性。 在基于相关的速率适应方案的上下文中,通信方案的可调参数可以被认为是定义多维参数空间,并且所确定的相关性可以被认为是可用于指导参数选择和调整的相关图 。 使用相关图可以从不完美和/或不完整的测量中提取信息,并且在相关图中收集的信息可用于调整相应的通信方案参数以增强通信性能。
    • 98. 发明申请
    • Distributed Overlay Multi-Channel Media Access Control for Wireless Ad Hoc Networks
    • 无线Ad Hoc网络的分布式覆盖多通道媒体访问控制
    • US20080232389A1
    • 2008-09-25
    • US11687951
    • 2007-03-19
    • Haitao WuKun TanJun ZhaoYongguang Zhang
    • Haitao WuKun TanJun ZhaoYongguang Zhang
    • H04J4/00H04J3/16
    • H04W72/02H04W72/085H04W84/18
    • Systems and methods for distributed overlay multi-channel MAC for wireless ad hoc networks are described. In one aspect, the systems and methods divide channel frequencies defined by a wireless network protocol into a single home channel and multiple guest channels that are orthogonal to the home channel. Each of the network nodes in the ad hoc network operates on the home channel for respective variable and overlapping amounts of time to maintain network connectivity with other respective network nodes. Additionally, each of the network nodes determines whether and when to switch from the home channel to a particular guest channel of the guest channels for a variable amount of time to increase data throughput over one or more corresponding communication links in the ad hoc network with other network node(s).
    • 描述了用于无线自组织网络的分布式覆盖多信道MAC的系统和方法。 在一个方面,系统和方法将由无线网络协议定义的信道频率划分为单个归属信道和与归属信道正交的多个客户信道。 ad hoc网络中的每个网络节点在归属信道上操作相应的可变和重叠的时间量,以维持与其他各个网络节点的网络连接。 另外,每个网络节点确定是否以及何时何时从客户信道切换到客户信道的特定客体信道一段可变的时间量,以增加具有其他的自组织网络中的一个或多个对应的通信链路上的数据吞吐量 网络节点。
    • 100. 发明申请
    • Method for dynamic bandwidth allocation in passive optical network
    • 无源光网络动态带宽分配方法
    • US20070140258A1
    • 2007-06-21
    • US10576520
    • 2004-10-21
    • Peilong TanJun ZhaoYu LiuJianming Hong
    • Peilong TanJun ZhaoYu LiuJianming Hong
    • H04L12/56H04L12/28
    • H04Q11/0067H04B10/272H04J3/1694H04Q11/0066H04Q2011/0064H04Q2011/0084
    • A method for dynamic bandwidth allocation in Passive Optical Network (PON), said PON includes a OLT and a plurality of ONUs accessing to the OLT, comprising: classifying traffic which is to be communicated between the OLT and the ONUs into a plurality of service types, and granting a different priority to each type of the services; authorizing service ports of every type of services to transmit service data in descending sequence of said priorities of the services, and recording granting information of the service ports obtained from the authorization; reading out said granting information of every to-be-granted service port of a same ONU; and scheduling granted start time of data transmission of every to-be-granted port of current ONU, generating downlink granting messages including both said granting information and said granted start time of data transmission of every granted port of said current ONU, transmitting said downlink granting messages to said current ONU. This method for bandwidth allocation in the present invention can satisfy requirements of different types of services, increase bandwidth utilization ratio and realize equal bandwidth allocation.
    • 一种用于在无源光网络(PON)中进行动态带宽分配的方法,所述PON包括OLT和接入OLT的多个ONU,包括:将要在OLT和ONU之间传送的业务分类为多种业务类型 并对每种类型的服务给予不同的优先权; 授权各类服务的服务端口按服务优先级顺序传送服务数据,记录从授权中获取的服务端口的授权信息; 读出同一个ONU的每个被授权服务端口的授权信息; 并且调度授权当前ONU的每个被授权端口的数据传输的开始时间,生成包括所述授权信息和所述当前ONU的每个授权端口的所述许可的数据传输开始时间的下行链路授权消息,发送所述下行链路授权 向当前ONU发送消息。 本发明的带宽分配方法可以满足不同业务类型的需求,增加带宽利用率,实现相等的带宽分配。