Providing proportionally fair bandwidth allocation in communication systems
    51.
    发明授权
    Providing proportionally fair bandwidth allocation in communication systems 有权
    在通信系统中提供比例公平的带宽分配

    公开(公告)号:US07969881B2

    公开(公告)日:2011-06-28

    申请号:US11563740

    申请日:2006-11-28

    IPC分类号: H04L12/26

    摘要: Sharing a resource may include the use of label values associated with information units presented to the resource. The label values may be determined based on, for example, arrival rates and/or committed flow rates. Criteria may be applied to label values to determine if the associated information units may be dropped.

    摘要翻译: 共享资源可以包括使用与向资源呈现的信息单元相关联的标签值。 标签值可以基于例如到达速率和/或承诺的流速来确定。 可以将标准应用于标签值以确定相关联的信息单元是否可能被丢弃。

    Sub-segment based transport layer protocol for wireless medium
    52.
    发明授权
    Sub-segment based transport layer protocol for wireless medium 有权
    用于无线介质的基于子段的传输层协议

    公开(公告)号:US07965674B2

    公开(公告)日:2011-06-21

    申请号:US11121153

    申请日:2005-05-03

    IPC分类号: H04W4/00

    摘要: The invention enables the use of TCP protocol for reliable transport of data over a wireless network, resolving the problems associated with frequent packet loss. Additional benefits include delivery of significant performance improvement, bandwidth saving and backward compatibility compared to the wire-line TCP protocol, and contribution to power savings in wireless handsets and devices. To make the retransmission process more granular, transport layer segments are subdivided into sub-segments. The invention utilizes a split TCP based approach and produces a series of smaller-sized segments that share the same transport layer header. A NACK-based message exchange, a new header format and a special windowing protocol are used to achieve reliability, flow-control, and efficient buffer handling.

    摘要翻译: 本发明能够使用TCP协议来在无线网络上可靠地传输数据,解决与频繁分组丢失相关的问题。 额外的优势包括与线路TCP协议相比,提供显着的性能改进,带宽节省和向后兼容性,以及对无线手机和设备中节电的贡献。 为了使重传过程更细化,传输层段被细分为子段。 本发明利用基于分组TCP的方法并且产生共享相同传输层报头的一系列较小尺寸的段。 使用基于NACK的消息交换,新的报头格式和特殊的窗口协议来实现可靠性,流量控制和高效的缓冲处理。

    Distributed bandwidth allocation for resilient packet ring networks
    53.
    发明授权
    Distributed bandwidth allocation for resilient packet ring networks 有权
    弹性分组环网的分布式带宽分配

    公开(公告)号:US07948881B2

    公开(公告)日:2011-05-24

    申请号:US11403521

    申请日:2006-04-13

    IPC分类号: H04L12/26 G06F15/16

    摘要: Methods and apparatus provide for allocating bandwidth in a resilient packet ring (RPR), including: determining a relationship between an arrival rate A(n) as a function of a fairness rate Fk(n) of a kth node of the RPR over time; computing an estimate of a slope -M of the relationship A(Fk(n)) at time n; and computing a next fairness rate Fk(n+1) of the kth node as a function of the slope M at time n+1.

    摘要翻译: 方法和装置提供用于在弹性分组环(RPR)中分配带宽,包括:确定作为RPR随时间推移的第k个节点的公平率F k(n)的到达速率A(n)之间的关系; 计算时间n处的关系A(Fk(n))的斜率M的估计; 并且计算第k个节点的下一个公平率F k(n + 1)作为时间n + 1处的斜率M的函数。

    Accomodating fragmentation with deterministic packet marking
    54.
    发明授权
    Accomodating fragmentation with deterministic packet marking 有权
    使用确定性包标记来容纳碎片

    公开(公告)号:US07908654B2

    公开(公告)日:2011-03-15

    申请号:US11079451

    申请日:2005-03-14

    IPC分类号: H04L29/14

    CPC分类号: H04L9/3239

    摘要: The deterministic packet marking (DPM) method is based on marking packets with the partial address information of ingress interface only. The attack victim is able to recover the complete address(es) information after receiving several packets from a particular attacking host or hosts. The full path is not really essential for the traceback since it can be different for different packets for different reasons. In order to deal with fragmentation, it is required that the ID field (as well as some other fields) of all the fragments in a given series is the same. DPM randomly selects the marks from the pool, which is created at startup. The mark completely occupies the ID field in the IP packet header, as well as Reserved Flag. Since every single packet passing through the DPM-enabled interface is marked, the ID field of all the fragments of a series are ensured to be the same. By allowing DPM to suspend randomness in selecting the marks for the fragments of a series, all fragments are ensured to have the same ID. This ID would be different from the one originally set by the origin of the packet, but this would not make a difference for the reassembly process.

    摘要翻译: 确定性分组标记(DPM)方法基于仅对入口接口的部分地址信息进行标记的报文。 攻击受害者能够在收到来自特定攻击主机或主机的几个数据包后恢复完整的地址信息。 完整路径对于追溯不是至关重要的,因为对于不同的数据包,由于不同的原因可能会有所不同。 为了处理分片,需要给定系列中所有片段的ID字段(以及其他一些字段)相同。 DPM从启动时随机选择池中的标记。 标记完全占用IP包头中的ID字段以及保留标志。 由于通过启用DPM的接口的每个数据包都被标记,因此确保一系列的所有片段的ID字段相同。 通过允许DPM在选择一系列片段的标记时暂停随机性,确保所有片段具有相同的ID。 该ID将不同于原始由分组原始设置的ID,但是这对于重新组装过程将是不同的。

    DATA PACKET TRAFFIC SCHEDULING
    56.
    发明申请
    DATA PACKET TRAFFIC SCHEDULING 有权
    数据包交通调度

    公开(公告)号:US20100202415A1

    公开(公告)日:2010-08-12

    申请号:US12368516

    申请日:2009-02-10

    摘要: Techniques of scheduling data packets are disclosed. For example, such data packet scheduling techniques may be employed to schedule data packets on wired and/or wireless networks. An example embodiment includes techniques for scheduling voice-over-Internet protocol data packets transmitted between a base station and a subscriber station on a WiMAX network.

    摘要翻译: 公开了调度数据包的技术。 例如,可以采用这样的数据分组调度技术来调度有线和/或无线网络上的数据分组。 示例性实施例包括用于在WiMAX网络上调度在基站和用户站之间传输的因特网上协议数据分组的技术。

    BEHAVIOR-BASED TRAFFIC DIFFERENTIATION (BTD) FOR DEFENDING AGAINST DISTRIBUTED DENIAL OF SERVICE (DDoS) ATTACKS
    58.
    发明申请
    BEHAVIOR-BASED TRAFFIC DIFFERENTIATION (BTD) FOR DEFENDING AGAINST DISTRIBUTED DENIAL OF SERVICE (DDoS) ATTACKS 有权
    基于行为的交通差异(BTD)防御分布式服务(DDoS)攻击

    公开(公告)号:US20070209068A1

    公开(公告)日:2007-09-06

    申请号:US11682119

    申请日:2007-03-05

    IPC分类号: G06F15/16

    摘要: Embodiments are directed toward a method for Behavior-based Traffic Differentiation (BTD) that initially receives incoming packets and performs traffic classification to determine the protocol of the incoming packets. In addition, BTD performs bandwidth division/allocation to further support traffic classification amongst non-TCP traffic such as UDP and ICMP. For TCP traffic, the method for BTD determines whether a TCP connection has been established and performs at least one of rate limiting, waiting time reduction for half-open connections, and incrementing backlog queue size when the TCP connection has not been established. If the TCP connection has been established successfully, the method for BTD further includes proactive tests for traffic differentiation which identify normal traffic, which is admitted, and attack traffic, which is dropped.

    摘要翻译: 实施例针对基于行为的流量分化(BTD)的方法,该方法最初接收传入分组并进行流分类以确定输入分组的协议。 此外,BTD执行带宽划分/分配,以进一步支持诸如UDP和ICMP之类的非TCP流量之间的流量分类。 对于TCP流量,BTD的方法确定TCP连接是否已经建立,并且在TCP连接尚未建立时执行速率限制,半开连接的等待时间减少以及递增积压队列大小中的至少一个。 如果TCP连接建立成功,BTD的方法还包括进行流量分类的主动测试,识别被允许的正常流量和丢弃的攻击流量。

    Providing Proportionally Fair Bandwidth Allocation in Communication Systems
    59.
    发明申请
    Providing Proportionally Fair Bandwidth Allocation in Communication Systems 有权
    在通信系统中提供比例公平的带宽分配

    公开(公告)号:US20070121505A1

    公开(公告)日:2007-05-31

    申请号:US11563740

    申请日:2006-11-28

    IPC分类号: H04L12/26

    摘要: Sharing a resource may include the use of label values associated with information units presented to the resource. The label values may be determined based on, for example, arrival rates and/or committed flow rates. Criteria may be applied to label values to determine if the associated information units may be dropped.

    摘要翻译: 共享资源可以包括使用与向资源呈现的信息单元相关联的标签值。 标签值可以基于例如到达速率和/或承诺的流速来确定。 可以将标准应用于标签值以确定相关联的信息单元是否可能被丢弃。

    Dynamic bandwidth allocation and service differentiation for broadband passive optical networks
    60.
    发明申请
    Dynamic bandwidth allocation and service differentiation for broadband passive optical networks 有权
    宽带无源光网络的动态带宽分配和业务差异化

    公开(公告)号:US20060268704A1

    公开(公告)日:2006-11-30

    申请号:US11405364

    申请日:2006-04-17

    IPC分类号: H04L12/26

    摘要: A dynamic upstream bandwidth allocation scheme is disclosed, i.e., limited sharing with traffic prediction (LSTP), to improve the bandwidth efficiency of upstream transmission over PONs. LSTP adopts the PON MAC control messages, and dynamically allocates bandwidth according to the on-line traffic load. The ONU bandwidth requirement includes the already buffered data and a prediction of the incoming data, thus reducing the frame delay and alleviating the data loss. ONUs are served by the OLT in a fixed order in LSTP to facilitate the traffic prediction. Each optical network unit (ONU) classifies its local traffic into three classes with descending priorities: expedited forwarding (EF), assured forwarding (AF), and best effort (BE). Data with higher priority replace data with lower priority when the buffer is full. In order to alleviate uncontrolled delay and unfair drop of the lower priority data, the priority-based scheduling is employed to deliver the buffered data in a particular transmission timeslot. The bandwidth allocation incorporates the service level agreements (SLAs) and the on-line traffic dynamics. The basic limited sharing with traffic prediction (LSTP) scheme is extended to serve the classified network traffic.

    摘要翻译: 公开了一种动态上行带宽分配方案,即与业务预测(LSTP)的有限共享,以提高PON上行传输的带宽效率。 LSTP采用PON MAC控制消息,根据在线流量负载动态分配带宽。 ONU带宽要求包括已经缓冲的数据和输入数据的预测,从而减少帧延迟并减轻数据丢失。 ONU在LSTP中以固定的顺序由OLT服务,以便于流量预测。 每个光网络单元(ONU)将其本地流量分为具有降序优先级的三类:加速转发(EF),保证转发(AF)和尽力而为(BE)。 当缓冲区满时,具有较高优先级的数据将以较低的优先级替换数据。 为了减轻低优先级数据的不受控制的延迟和不公平的丢弃,采用基于优先级的调度来在特定的传输时隙中传送缓冲的数据。 带宽分配包含服务级别协议(SLA)和在线流量动态。 流量预测(LSTP)方案的基本有限共享扩展到分类网络流量。