公开(公告)号：US06738350B1

公开(公告)日：2004-05-18

申请号：US09625289

申请日：2000-07-25

申请人： Zhengping Gao ,  Chi-Jiun Su ,  Stephanie Demers

发明人： Zhengping Gao ,  Chi-Jiun Su ,  Stephanie Demers

IPC分类号： H04B7204

CPC分类号： H04W28/08 ,  H04B7/18584 ,  H04W16/14 ,  H04W28/20 ,  H04W84/06

摘要： An approach for performing congestion avoidance in a switching communication system is disclosed. An input port of the switching communication system receives a bandwidth request from a source. The switching communication system includes a bandwidth control processor that examines the bandwidth request, and multiple output ports. The output ports communicate with various destination sites. A congestion avoidance logic within the switching communication system generates multiple clusters based upon a transmission constraint associated with the output ports; each of the clusters corresponds to a portion of the destination sites. The congestion avoidance logic determines a cluster threshold that corresponds to traffic load distribution among the critical clusters. Additionally, the congestion avoidance logic selectively grants the bandwidth request based upon the determined cluster threshold. This congestion avoidance mechanism has applicability to a packet-switched satellite communication system with an on-board switch; the switch has transmission constraints such that the transmitters of the satellite at the output port of the switch cannot simultaneously transmit to downlink cells, which contain station terminals that are within an interfering distance from one another.

摘要翻译： 公开了一种在交换通信系统中进行拥塞避免的方法。 交换通信系统的输入端口从源接收带宽请求。 交换通信系统包括检查带宽请求和多个输出端口的带宽控制处理器。 输出端口与各种目标站点通信。 交换通信系统内的拥塞避免逻辑基于与输出端口相关联的传输约束产生多个簇; 每个集群对应于目标站点的一部分。 拥塞避免逻辑确定对应于关键集群之间的业务负载分布的集群阈值。 此外，拥塞避免逻辑基于所确定的集群阈值选择性地授予带宽请求。 该拥塞避免机制适用于具有车载交换机的分组交换卫星通信系统; 交换机具有传输限制，使得交换机的输出端口处的卫星的发射机不能同时发送到包含彼此干扰距离内的站终端的下行链路小区。

公开(公告)号：US06233451B1

公开(公告)日：2001-05-15

申请号：US09115096

申请日：1998-07-13

申请人： Anthony Noerpel ,  Chandra Joshi ,  Michael Parr ,  Zhengping Gao ,  Stephanie Demers

发明人： Anthony Noerpel ,  Chandra Joshi ,  Michael Parr ,  Zhengping Gao ,  Stephanie Demers

IPC分类号： H04Q720

CPC分类号： H04B7/2125 ,  H04B7/18517 ,  H04B7/18539 ,  H04B7/18543 ,  H04B7/18558 ,  H04B7/18567 ,  H04B7/18571 ,  H04B7/1858 ,  H04B7/18582 ,  H04B7/19 ,  H04B7/2041 ,  H04W28/14 ,  H04W52/0203 ,  H04W52/0216 ,  H04W72/0413 ,  H04W72/042 ,  H04W74/00 ,  H04W76/10 ,  H04W76/25 ,  H04W80/00 ,  H04W84/06 ,  Y02D70/1222 ,  Y02D70/164 ,  Y02D70/20 ,  Y02D70/446

摘要： An access terminal for initiating spot beam selection in a satellite communication system, in which the access terminal includes a receiver for measuring the received signal strength (RSS) of a multiplicity of radio frequency communication spot beam links. The access terminal is further provided with a microcontroller for comparing the received signal strengths from each of the multiplicity of spot beams to initiate information communication via a communication channel of the satellite communication system. In a described embodiment, the controller of the access terminal compares seven spot beam links to determine whether to initiate information communication with one of the seven spot beams received. Additionally, a memory coupled to the controller of the access terminal is used for storing spot beam identification information including the spot beam links assigned to the access terminal via the satellite communication system. The selection procedure employed by the system and method described facilitate a rapid selection of an appropriate spot beam identified from the multiplicity of radio frequency spot beam links received at a mobile access terminal.

摘要翻译： 一种用于在卫星通信系统中发起点波束选择的接入终端，其中接入终端包括用于测量多个射频通信点波束链路的接收信号强度（RSS）的接收机。 接入终端还设置有微控制器，用于比较来自多个点波束中的每一个的接收信号强度，以通过卫星通信系统的通信信道发起信息通信。 在所描述的实施例中，接入终端的控制器比较七个点波束链路，以确定是否发起与所接收的七个点波束中的一个的信息通信。 此外，耦合到接入终端的控制器的存储器用于存储包括经由卫星通信系统分配给接入终端的点波束链路的点波束识别信息。 所述系统采用的选择过程和方法有助于快速选择从在移动接入终端处接收的多个射频点波束链路识别的适当的点波束。

公开(公告)号：US5548533A

公开(公告)日：1996-08-20

申请号：US319678

申请日：1994-10-07

申请人： Zhengping Gao ,  Steve Racz ,  Kalyan Basu

发明人： Zhengping Gao ,  Steve Racz ,  Kalyan Basu

IPC分类号： H04Q3/545 ,  H04W24/00 ,  H04W28/12 ,  H04W28/14 ,  H04W92/04 ,  H04B1/60

CPC分类号： H04W24/00 ,  H04Q3/54591 ,  H04W28/12 ,  H04W28/14 ,  H04W92/04

摘要： An overload control for a central processor in the switching network of a mobile radio system. The central processor may be part of a Mobile services Switching Center (MSC). Congestion reports, based on the delay experienced by messages awaiting processing at the central processor, are broadcast to peripheral processors. The peripheral processors may be located in the MSC at interfaces of the MSC to other network elements such as base stations, the PSTN, other MSCs. Peripheral processors maintain variable message origination thresholds responsive to the congestion reports.

摘要翻译： 用于移动无线电系统的交换网络中的中央处理器的过载控制。 中央处理器可以是移动业务交换中心（MSC）的一部分。 基于中央处理器等待处理的消息所经历的延迟的拥塞报告被广播到外围处理器。 外围处理器可以位于MSC的接口处的MSC到诸如基站，PSTN，其他MSC之类的其他网络元件。 响应于拥塞报告，外围处理器保持可变消息发起阈值。