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    • 2. 发明申请
    • APPARATUS AND METHOD FOR CONNECTION ADMISSION CONTROL IN BROADBAND WIRELESS ACCESS SYSTEM
    • 宽带无线接入系统中连接接入控制的设备及方法
    • US20090116384A1
    • 2009-05-07
    • US12265826
    • 2008-11-06
    • Ki-Back KIMEun-Chan PARK
    • Ki-Back KIMEun-Chan PARK
    • H04W76/00
    • H04L47/805H04L47/15H04L47/70H04L47/823H04L47/824
    • An apparatus and method for Connection Admission Control (CAC) in a Broadband Wireless Access (BWA) system are provided. In the method, a QoS class of a call requesting connection admission is detected and an application layer required bandwidth is determined using the QoS parameters of a service flow of the detected QoS class. A required bandwidth weight of the QoS class is determined in consideration of a packet header overhead. Per-slot available bandwidths of a reference QoS class and the QoS class are determined using the determined application layer required bandwidth, and a required bandwidth conversion ratio of a corresponding QoS class is determined using the determined per-slot available bandwidths. An equivalent MAC layer required bandwidth is determined using the determined application layer required bandwidth, the required bandwidth weight, and the required bandwidth conversion ratio.
    • 提供了一种宽带无线接入(BWA)系统中连接接纳控制(CAC)的装置和方法。 在该方法中,检测请求连接许可的呼叫的QoS等级,并且使用检测到的QoS类的服务流的QoS参数来确定应用层所需的带宽。 考虑到包头开销来确定QoS类的所需带宽权重。 使用确定的应用层所需带宽来确定参考QoS类别和QoS类别的每时隙可用带宽,并且使用确定的每时隙可用带宽来确定相应QoS类别的所需带宽转换比。 使用确定的应用层所需带宽,所需带宽权重和所需带宽转换比来确定所需带宽的等效MAC层。
    • 5. 发明申请
    • 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
    • US20080130670A1
    • 2008-06-05
    • US11950623
    • 2007-12-05
    • Ki-Back KIMEun-Chan PARKHan-Seok KIM
    • Ki-Back KIMEun-Chan PARKHan-Seok KIM
    • H04L12/56
    • 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。