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    • 3. 发明授权
    • Distributed control of service category request mapping
    • 分布式控制服务类别请求映射
    • US06483807B1
    • 2002-11-19
    • US09270580
    • 1999-03-16
    • Thomas A. ManningDavid N. PeckRobert ConstantinDavid E. HammondAndrew MichalStephen R. Veit
    • Thomas A. ManningDavid N. PeckRobert ConstantinDavid E. HammondAndrew MichalStephen R. Veit
    • G01R3108
    • H04L12/5602H04L12/5601H04L49/205H04L2012/5634H04L2012/5635H04L2012/5636H04Q11/0478
    • Each switch along a call setup path in a network decides whether the call request should be upgraded from a non-flow-controlled service type to a flow-controlled service type. Each switch bases the decision on whether a boolean variable for the calling subscriber that appears in a management information base (MIB) is set to a value indicating that the subscriber is entitled to the upgrade. In addition, the upgrade is performed only if an interface on the route to the called party on which the call setup request is to be forwarded supports flow-controlled connections. When the call is to be upgraded, the switch replaces the service type indicator in the setup message with a value indicating a flow-controlled service type, and forwards the setup message toward the called subscriber. If the MIB variable is set to a value indicating that the upgrade is not to be performed, it is still possible for a subscriber to request flow-controlled service directly, by indicating this service type in the original call setup message. Each switch also makes a call downgrade decision. When a call setup message is received requesting flow-controlled service but destined for an interface that does not support flow-controlled operation, the switch replaces the service type indicator in the outgoing setup message with a value indicating a non-flow-controlled service type.
    • 沿着网络中的呼叫建立路径的每个交换机决定呼叫请求是否应该从非流控制的服务类型升级到流控服务类型。 每个交换机基于出现在管理信息库(MIB)中的主叫用户的布尔变量是否被设置为指示用户有权升级的值的决定。 另外,只有当呼叫建立请求被转发到被叫方的路由上的接口支持流量控制连接时才执行升级。 当呼叫要升级时,交换机将使用指示流控服务类型的值替换设置消息中的业务类型指示符,并将该建立消息转发给被叫用户。 如果MIB变量被设置为指示不执行升级的值,则用户可以通过在原始呼叫建立消息中指示该服务类型来直接请求流控服务。 每个开关也会调用降级决定。 当接收到呼叫建立消息请求流控制服务但发往不支持流控制操作的接口时,交换机用输出建立消息中的服务类型指示符替换指示非流控服务类型的值 。
    • 4. 发明授权
    • Network element delay allocation for efficient use of network resources
    • 网元延迟分配,有效利用网络资源
    • US06198725B1
    • 2001-03-06
    • US09270574
    • 1999-03-16
    • Robert ConstantinDavid E. HammondDavid N. PeckSalma Abu-AyyashStephen R. VeitThomas A. Manning
    • Robert ConstantinDavid E. HammondDavid N. PeckSalma Abu-AyyashStephen R. VeitThomas A. Manning
    • H04L1228
    • H04L47/822H04L47/70H04L47/724H04L47/805H04L2012/5628H04L2012/5632H04L2012/5649H04Q11/0478
    • A system for allocating resources at network elements along a path through a communications network. Resources are allocated at a network element along the path in response to a connection request message. The delay budget is the minimum of a calculated cell transfer delay and a calculated cell delay variation. The calculated cell transfer delay is determined by finding a difference between a target end to end cell delay and an accumulated cell delay, and then dividing that difference by a number of network elements remaining in the path between the network element and the end of the path. To determine the calculated cell delay variation, the network element first finds a difference between the Max CDV QoS parameter and the sum of the accumulated cell delay variation and the switching delay for the network element. The calculated cell delay variation is then equal to that difference divided by the number of network elements remaining in the path between the network element and the end of the path. The target end to end cell delay is for example determined by the first network element in the path as equal to the Max CTD QoS parameter minus the end to end link propagation delay for the path and the link propagation delay for the incoming link to the first network element over which the message was received. The first network element generates and forwards a modified connection request message including the determined target end to end cell delay value, as well as a designated transit list indicating each network element in the prospective path, and including a current network element pointer.
    • 一种用于沿着通过通信网络的路径在网络元件处分配资源的系统。 响应于连接请求消息,沿着路径的网元分配资源。 延迟预算是计算的单元传输延迟和计算的单元延迟变化的最小值。 通过找出目标端到端小区延迟与累积小区延迟之间的差异来确定计算的小区传输延迟,然后将该差除以剩余在网元和路径末端之间的路径中的网络元素数 。 为了确定计算的信元延迟变化,网络元件首先找到最大CDV QoS参数与累积的信元延迟变化和网络元件的切换延迟的总和之间的差。 所计算的单元延迟变化然后等于该差值除以网络元件与路径末端之间的路径中剩余的网络元件的数量。 目标端到端信元延迟例如由路径中的第一网络元素确定为等于Max CTD QoS参数减去路径的端到端链路传播延迟,以及到第一个到达第一个信元的传入链路的链路传播延迟 接收消息的网络元素。 第一网元生成并转发包括确定的目标端到端小区延迟值的修改的连接请求消息,以及指示预期路径中的每个网络元件的指定的转接列表,并且包括当前网络元素指针。