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    • 6. 发明授权
    • Scheduling method and system for communication systems that offer multiple classes of service
    • 提供多种服务类型的通信系统的调度方法和系统
    • US07177275B2
    • 2007-02-13
    • US10207648
    • 2002-07-26
    • Kenneth StanwoodGeorge LinYair Bourlas
    • Kenneth StanwoodGeorge LinYair Bourlas
    • G08C15/00H04J3/14H04J3/16H04J3/22H04L12/26H04L12/43H04Q7/00
    • H04W72/1236H04L47/50H04W72/1242H04W72/1252
    • A method and system for prioritizing connection data that is associated with different classes of service for transmission in a frame based communication system. These classes of service can include CBR, nrt-VBR, MGR, and UPR traffic. One embodiment of the scheduling method and system uses hierarchical round-robin (HRR) with deficit round-robin (DRR). In this embodiment, the scheduling method and system guarantees minimum rates of nrt-VBR and MGR traffic to the connections. The excess bandwidth is then fairly allocated between the existing connections and their classes of service. For example, the excess is allocated for UBR traffic and for the excess demands of the nrt-VBR and MGR connections. In one embodiment, the scheduling method and system allocates the excess bandwidth in a frame to the existing connections using weighted round robin to differentiate between different classes of service. In one embodiment, excess allocation to nrt-VBR and MGR connections is rolled back into the deficit counters for the minimum guaranteed rates of nrt-VBR and MGR connections.
    • 一种用于对连接数据进行优先级划分的方法和系统,所述连接数据与基于帧的通信系统中的不同服务等级相关联以进行传输。 这些服务类别可以包括CBR,nrt-VBR,MGR和UPR流量。 调度方法和系统的一个实施例使用具有赤字循环(DRR)的分层循环(HRR)。 在本实施例中,调度方法和系统保证连接的nrt-VBR和MGR业务的最小速率。 然后在现有连接及其服务等级之间公平分配超额带宽。 例如,超额分配用于UBR流量以及nrt-VBR和MGR连接的超额需求。 在一个实施例中,调度方法和系统使用加权轮询将帧中的多余带宽分配给现有连接,以区分不同类别的服务。 在一个实施例中,对nrt-VBR和MGR连接的最小保证速率的冗余分配回滚到赤字计数器中。
    • 7. 发明申请
    • Method and apparatus for bandwidth request/grant protocols in a wireless communication system
    • 无线通信系统中带宽请求/授权协议的方法和装置
    • US20050089064A1
    • 2005-04-28
    • US10978903
    • 2004-11-01
    • Ofer ZimmermanKenneth StanwoodYair Bourlas
    • Ofer ZimmermanKenneth StanwoodYair Bourlas
    • H04L12/28H04L12/56H04Q11/04H04W28/04H04W28/14H04W28/20H04W72/00H04W72/04H04W72/14H04W88/08H04J3/14
    • H04Q11/0478H04L2012/5607H04L2012/561H04W28/14H04W28/20H04W72/1236H04W72/14
    • A method and apparatus for allocating bandwidth in a broadband wireless communication system is disclosed. One embodiment uses a self-correcting bandwidth request/grant protocol. The self-correcting bandwidth request/grant protocol utilizes a combination of incremental and aggregate bandwidth requests. CPEs primarily transmit incremental bandwidth requests to their associated base stations, followed by periodic transmissions of aggregate bandwidth requests. The use of periodic aggregate bandwidth requests (that express the current state of their respective connection queues) allows the bandwidth allocation method and apparatus to be “self-correcting”. Another embodiment utilizes an abridged bandwidth request/grant protocol to allocate bandwidth. The abridged bandwidth request/grant protocol system utilizes padding packets to request a reduction in bandwidth allocation to a CPE. A base station modem alerts a base station CPU when the BS modem receives a padding packet from a CPE. After alerting the BS CPU the method can reduce the associated CPE's bandwidth allocation.
    • 公开了一种用于在宽带无线通信系统中分配带宽的方法和装置。 一个实施例使用自校正带宽请求/授权协议。 自校正带宽请求/授权协议使用增量和聚合带宽请求的组合。 CPE主要向其相关联的基站发送增量带宽请求,随后是聚合带宽请求的周期性传输。 使用周期性聚合带宽请求(表示其相应连接队列的当前状态)允许带宽分配方法和装置“自校正”。 另一个实施例利用了一个节省带宽的请求/授权协议来分配带宽。 精简带宽请求/授权协议系统利用填充分组来请求减少对CPE的带宽分配。 当BS调制解调器从CPE接收填充分组时,基站调制解调器提醒基站CPU。 在提醒BS CPU之后,该方法可以减少相关CPE的带宽分配。
    • 9. 发明授权
    • Scheduling method and system for communication systems that offer multiple classes of service
    • 提供多种服务类型的通信系统的调度方法和系统
    • US07609631B2
    • 2009-10-27
    • US11671207
    • 2007-02-05
    • Kenneth StanwoodGeorge LinYair Bourlas
    • Kenneth StanwoodGeorge LinYair Bourlas
    • H04J3/14H04W4/00H04L12/42
    • H04W72/1236H04L47/50H04W72/1242H04W72/1252
    • A method and system for prioritizing connection data that is associated with different classes of service for transmission in a frame based communication system. These classes of service can include CBR, nrt-VBR, MGR, and UBR traffic. One embodiment of the scheduling method and system uses hierarchical round-robin (HRR) with deficit round-robin (DRR). In this embodiment, the scheduling method and system guarantees minimum rates of nrt-VBR and MGR traffic to the connections. The excess bandwidth is then fairly allocated between the existing connections and their classes of service. For example, the excess is allocated for UBR traffic and for the excess demands of the nrt-VBR and MGR connections. In one embodiment, the scheduling method and system allocates the excess bandwidth in a frame to the existing connections using weighted round robin to differentiate between different classes of service. In one embodiment, excess allocation to nrt-VBR and MGR connections is rolled back into the deficit counters for the minimum guaranteed rates of nrt-VBR and MGR connections.
    • 一种用于对连接数据进行优先级划分的方法和系统,所述连接数据与基于帧的通信系统中的不同服务等级相关联以进行传输。 这些服务类别可以包括CBR,nrt-VBR,MGR和UBR流量。 调度方法和系统的一个实施例使用具有赤字循环(DRR)的分层循环(HRR)。 在本实施例中,调度方法和系统保证连接的nrt-VBR和MGR业务的最小速率。 然后在现有连接及其服务等级之间公平分配超额带宽。 例如,超额分配用于UBR流量以及nrt-VBR和MGR连接的超额需求。 在一个实施例中,调度方法和系统使用加权轮询将帧中的多余带宽分配给现有连接,以区分不同类别的服务。 在一个实施例中,对nrt-VBR和MGR连接的最小保证速率的冗余分配回滚到赤字计数器中。