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1. 发明授权

US06657983B1 Scheduling of upstream traffic in a TDMA wireless communications system 有权
标题翻译：在TDMA无线通信系统中调度上行流量
公开(公告)号：US06657983B1
公开(公告)日：2003-12-02
申请号：US09429014
申请日：1999-10-29
申请人： Mieczyslaw J. Surazski , James Aweya , Imed Frigui , Pierre A. Hamel , Delfin Y. Montuno , Tong Shan , Bernard Thiboutot , Genzao G. Zhang
发明人： Mieczyslaw J. Surazski , James Aweya , Imed Frigui , Pierre A. Hamel , Delfin Y. Montuno , Tong Shan , Bernard Thiboutot , Genzao G. Zhang
IPC分类号： H04B7212
CPC分类号： H04B7/2646
摘要： A method of allocating bandwidth for transmitting upstream cells from a CPE unit to a BTS. The CPE determines arrival time information associated with each cell and sends arrival time information associated with at least one cell to the BTS. The BTS allocates future bandwidth to the CPE as a function of the arrival time information received from the CPE. For example, the BTS estimates the number of cell arrivals occurring in the current scheduling period based on past cell arrival times. The BTS then sends information to the CPE in which the allocated future bandwidth is specified. Finally, the CPE groups a number of cells into a burst packet occupying the allocated bandwidth and sends the burst packet to the BTS. Rather than respond in a delayed manner to a bandwidth deficiency or surplus at an individual CPE unit, the BTS produces an estimate of a CPE unit's bandwidth demands, resulting in more efficient bandwidth utilization and reduced cell loss ratio.
摘要翻译：分配用于从CPE单元向BTS发送上行小区的带宽的方法。 CPE确定与每个小区相关联的到达时间信息，并将与至少一个小区相关联的到达时间信息发送到BTS。作为从CPE接收的到达时间信息的函数，BTS将CPE的未来带宽分配给CPE。例如，BTS基于过去的小区到达时间估计在当前调度周期中发生的小区到达的数量。 BTS然后向CPE发送信息，其中指定了分配的未来带宽。最后，CPE将多个小区分组成占用分配带宽的突发分组，并将突发分组发送到BTS。不是以延迟的方式响应单个CPE单元的带宽不足或剩余，所以BTS产生CPE单元的带宽需求的估计，导致更有效的带宽利用和减少的信元丢失率。

2. 发明授权

US06603958B1 Method and apparatus for a carrier frequency control in a wireless communication system 有权
标题翻译：无线通信系统中载波频率控制的方法和装置
公开(公告)号：US06603958B1
公开(公告)日：2003-08-05
申请号：US09500458
申请日：2000-02-09
申请人： Shiwei Gao , Genzao G. Zhang , Kuang-Tsan Wu
发明人： Shiwei Gao , Genzao G. Zhang , Kuang-Tsan Wu
IPC分类号： H04B110
CPC分类号： H04L27/0014 , H04L2027/002 , H04L2027/0022
摘要： The invention provides a frequency control method and apparatus for efficiently controlling in a wireless system the carrier frequency of a received signal transmitted over a radio link to counteract carrier frequency drifts in the received signal and hence maintain link connectivity. In a preferred embodiment, the invention provides upstream and downstream carrier frequency control in a broadband wireless access (BWA) time division multiplex access (TDMA) system formed of a base transceiver station (BTS) and multiple customer premises equipment (CPE) units. At each of the CPE units, the CPE upstream carrier frequency is preemptively adjusted based on downstream carrier frequency measurements to counteract carrier frequency variations in the upstream carrier frequency. For downstream communications, the BTS periodically polls all active CPE units to obtain downstream frequency offset estimates, calculate a frequency correction offset and adjust the downstream carrier frequency accordingly.
摘要翻译：本发明提供了一种频率控制方法和装置，用于在无线系统中有效地控制通过无线电链路发射的接收信号的载波频率，以抵消载波频率在接收信号中漂移，从而保持链路连通性。在优选实施例中，本发明在由基站（BTS）和多个客户驻地设备（CPE）单元形成的宽带无线接入（BWA）时分复用接入（TDMA）系统中提供上行和下行载波频率控制。在每个CPE单元中，CPE上行载波频率基于下行载波频率测量进行抢占式调整，以抵消上行载波频率中的载波频率变化。对于下游通信，BTS周期性地轮询所有活动CPE单元以获得下行频率偏移估计，计算频率校正偏移并相应地调整下行载波频率。

3. 发明授权

US06519449B1 Method and apparatus for a signal power control in a wireless communication system 有权
标题翻译：无线通信系统中信号功率控制的方法和装置
公开(公告)号：US06519449B1
公开(公告)日：2003-02-11
申请号：US09428988
申请日：1999-10-29
申请人： Genzao G. Zhang , Kuang-Tsan Wu , Jiandong Zhuang , Pei Hou , Shiwei Gao , Harvey H. Lee
发明人： Genzao G. Zhang , Kuang-Tsan Wu , Jiandong Zhuang , Pei Hou , Shiwei Gao , Harvey H. Lee
IPC分类号： H04B100
CPC分类号： H04W52/367 , H04W24/00 , H04W28/18 , H04W48/08 , H04W52/08 , H04W52/16 , H04W52/225
摘要： The invention provides a signal power control method and apparatus for a wireless system to control the power level of a received signal transmitted over a radio link so as to counteract transmission impairments caused by environment variations and maintain the reliability of the radio link. The signal power control of this invention serves to control the transmit power used for transmission and adjust the position of the receiver dynamic range so that the received signal can always be optimally received. In a preferred embodiment, the invention is incorporated in a broadband wireless access (BWA) time division multiplex access (TDMA) system to maintain the reliability of an upstream radio link connecting a base transceiver station (BTS) with multiple customer premises equipment (CPE) units. In the preferred embodiment, power control messages are exchanged between the BTS and the CPE units based on the international telecommunications union (ITU) R112 local multipoint distribution service (LMSD) standard for effecting the signal power control of the present invention.
摘要翻译：本发明提供了一种用于无线系统的信号功率控制方法和装置，用于控制通过无线电链路传输的接收信号的功率电平，以抵消由环境变化引起的传输损伤并保持无线电链路的可靠性。本发明的信号功率控制用于控制用于传输的发射功率，并调整接收机动态范围的位置，使得接收到的信号总能被最佳地接收。在优选实施例中，本发明被并入宽带无线接入（BWA）时分复用接入（TDMA）系统中，以维持将基站收发台（BTS）与多个客户驻地设备（CPE）连接的上游无线电链路的可靠性，单位。在优选实施例中，基于用于实现本发明的信号功率控制的国际电信联盟（ITU）R112本地多点分配服务（LMSD）标准，在BTS和CPE单元之间交换功率控制消息。

4. 发明授权

US07894721B2 Control of parameters in a global optical controller 有权
标题翻译：控制全局光控制器中的参数
公开(公告)号：US07894721B2
公开(公告)日：2011-02-22
申请号：US11533166
申请日：2006-09-19
申请人： Kim B. Roberts , Genzao G. Zhang , James Harley , Feng Shi , Leo Strawczynski
发明人： Kim B. Roberts , Genzao G. Zhang , James Harley , Feng Shi , Leo Strawczynski
IPC分类号： H04B10/08 , H04B17/00
CPC分类号： H04J14/0227 , H04B10/0793 , H04J14/0201 , H04J14/0221 , H04J14/0246 , H04J14/0279
摘要： An optical network system having a global controller capable of controlling all the elements of the network. The controller receives performance data from each optical network element and calculates a performance value for each channel transmitting through the system. The controller then isolates the channel with the minimum performance value and tests possible changes in network element parameters to find a change which would increase this performance value. Once such a change is found, it is implemented and the system is reoptimized.
摘要翻译：一种具有能够控制网络的所有元素的全局控制器的光网络系统。控制器从每个光网络元件接收性能数据，并计算通过系统传输的每个通道的性能值。然后，控制器将通道与最小性能值隔离，并测试网元参数的可能变化，以找到会增加此性能值的更改。一旦发现了这样的变化，就会实现这一改变，系统被重新优化。

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