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    • 1. 发明授权
    • Method and apparatus for managing a buffer in a communication system
    • 用于管理通信系统中的缓冲器的方法和装置
    • US07835277B2
    • 2010-11-16
    • US11950623
    • 2007-12-05
    • Ki-Back KimEun-Chan ParkHan-Seok Kim
    • Ki-Back KimEun-Chan ParkHan-Seok Kim
    • H04L12/28
    • H04W72/1242H04L65/80H04W72/1231
    • A method and apparatus for managing a buffer of a Radio Access Station (RAS) in a communication system are provided. An available buffer space determiner sets a threshold for each service class for scheduling packet input/output of the buffer according to priority of a service class, estimates and stores, upon receipt of a packet at the buffer, an available space size of the buffer after the packet reception, compares the estimated available space size of the buffer with a first threshold corresponding to a first service class indicative of a service class of the packet, and schedules packet input/output of the buffer according to the comparison result. A processor module schedules packet input/output of the buffer according to an output of the available buffer space determiner. The present invention can improve quality of services through service differentiation based on priorities of service classes and buffer management based on characteristics of the corresponding service traffics.
    • 提供了一种用于在通信系统中管理无线电接入站(RAS)的缓冲器的方法和装置。 可用的缓冲区空间确定器根据服务类别的优先级设置每个服务类别的阈值以调度缓冲器的分组输入/输出,在缓冲器接收到分组时估计和存储缓冲器的可用空间大小 分组接收将缓冲器的估计可用空间大小与指示分组的服务类别的第一服务类别相对应的第一阈值进行比较,并且根据比较结果调度缓冲器的分组输入/输出。 处理器模块根据可用缓冲区空间确定器的输出调度缓冲区的分组输入/输出。 本发明可以基于服务类别的优先级和基于相应业务流量特性的缓冲管理来提高业务差异化服务质量。
    • 7. 发明授权
    • Epicycloidal light guide and illuminating facility
    • 外置光导和照明设施
    • US06621978B1
    • 2003-09-16
    • US09688239
    • 2000-10-16
    • Joon-Sik ChoiHyung-Joo KangHyo-Sik JeonHan-Seok KimYong-Seog JeonGennady (Inakh) Bukhman
    • Joon-Sik ChoiHyung-Joo KangHyo-Sik JeonHan-Seok KimYong-Seog JeonGennady (Inakh) Bukhman
    • G02B600
    • G02B6/0005G02B6/0096Y10S385/901
    • The present invention relates to a light guide capable of transferring light from an illuminating apparatus to a certain distant destination. The light guide includes a light source, and a hollow guide unit extended from the light source and having a transparent lateral surface. The present invention provides a pipe shaped light guide having a cross section of an epicycloidal curve for enhancing power and a light emitting characteristic. In the present invention, light is transmitted using a light transmitting material or a prism at a portion of a cross section of the epicycloidal curve, and a reflection plate formed of a high reflection ratio is installed at the remaining portions of the cross section of the same. In addition, an expensive lens or prism is not used in the present invention thereby decreasing fabrication cost. It is possible to provide a high efficiency light guide. In particular, it is possible to improve illumination and energy efficiency characteristics by changing the type of the epicycloid or changing an optical parameter of a material which forms the wall surface of the light guide.
    • 本发明涉及能够将光从照明装置传送到某个远方目的地的导光体。 光导包括光源和从光源延伸并具有透明侧表面的中空引导单元。 本发明提供了一种管状光导,其具有用于增强功率和发光特性的外部交流曲线的横截面。 在本发明中,使用透光材料或棱镜在外部曲线的横截面的一部分透射光,并且在反射率的横截面的其余部分安装反射率高的反射板 相同。 此外,在本发明中不使用昂贵的透镜或棱镜,从而降低制造成本。 可以提供高效率的光导。 特别地,可以通过改变外部线性化的类型或改变形成光导的壁表面的材料的光学参数来改善照明和能量效率特性。