公开(公告)号：US06782261B1

公开(公告)日：2004-08-24

申请号：US09559088

申请日：2000-04-27

申请人： Walid Ahmed ,  Sarath Kumar ,  Sanjiv Nanda

发明人： Walid Ahmed ,  Sarath Kumar ,  Sanjiv Nanda

IPC分类号： H04Q720

CPC分类号： H04W36/36

摘要： In a wireless communication system, in which a mobile station is operable to monitor the signal strengths of a plurality of pilot signals transmitted from a plurality of base stations, a method and device by which the mobile station determines the membership of Active Set pilots by generating a quality metric derived as a function of (i) detected pilot signal strengths corresponding to the Active Set of pilots, and (ii) detected pilot signal strengths corresponding to a non-Active Set of pilots, determining a threshold value, the threshold value determined as a function of the quality metric, and assigning the pilot to, or removing the pilot from, the Active Set of pilots if the signal strength corresponding to the pilot exceeds the threshold value.

摘要翻译： 在无线通信系统中，其中移动台可操作以监视从多个基站发送的多个导频信号的信号强度，移动台通过该方法和设备确定活动集导频的成员资格，通过生成 作为（i）与导频的有效集合相对应的检测导频信号强度的函数导出的质量度量，以及（ii）对应于非有效导频集合的检测导频信号强度，确定阈值，所确定的阈值 作为质量度量的函数，并且如果与导频对应的信号强度超过阈值，则将导频分配给或者从导频的有源集合去除导频。

公开(公告)号：US07193981B1

公开(公告)日：2007-03-20

申请号：US09624765

申请日：2000-07-25

申请人： Walid Ahmed ,  Joe Huang ,  Sarath Kumar ,  Sanjiv Nanda ,  Devesh T. Patel ,  Melanie M. Wang

发明人： Walid Ahmed ,  Joe Huang ,  Sarath Kumar ,  Sanjiv Nanda ,  Devesh T. Patel ,  Melanie M. Wang

IPC分类号： H04Q7/00

CPC分类号： H04W36/18

摘要： In the method of processing soft handoff information at a base station, soft handoff information of a mobile station is received at the base station. The soft handoff information indicates at least a number of base stations in an active list of the mobile station. The active list is a list of base stations involved in a call of the mobile station. The base station applies a rules set to the soft handoff information to determine changes in the active list. The rules set requires more stringent conditions be met to add a base station to the active list when the active list includes a first number of base stations as compared to when the active list includes a second number of base stations; wherein the first number is greater than the second number. The determination results are then sent to the mobile station.

摘要翻译： 在基站处理软越区切换信息的方法中，在基站接收移动台的软越区切换信息。 软切换信息指示移动台的活动列表中的至少多个基站。 活动列表是涉及移动台的呼叫的基站的列表。 基站对软切换信息应用规则集以确定活动列表中的变化。 与主动列表包括第二数量的基站相比，当活动列表包括第一数量的基站时，规则集需要更加严格的条件来将基站添加到活动列表; 其中所述第一数量大于所述第二数量。 然后将确定结果发送到移动台。

公开(公告)号：US08279782B2

公开(公告)日：2012-10-02

申请号：US10197831

申请日：2002-07-19

申请人： Hisham S. Abdel-Ghaffar ,  Walid Ahmed ,  Sanjiv Nanda ,  Ashwin Sampath

发明人： Hisham S. Abdel-Ghaffar ,  Walid Ahmed ,  Sanjiv Nanda ,  Ashwin Sampath

IPC分类号： H04B7/005

CPC分类号： G06F9/5061

摘要： The present invention provides systems and methods for the assignment of a plurality of processors to a plurality of data servers. An exemplary embodiment of the present invention provides systems and methods for addressing the problem of transmitter/receiver assignment for softer handoff in CDMA systems as well as any other system that requires variable size allocation of processors in a resource sharing environment. An exemplary embodiment of a system for processing data received from data servers according to the present invention comprises a shared medium, a plurality of processors and a smaller plurality of intermediate nodes partitioned into K sets, wherein at the kth set, every “k” processors are associated with one intermediate node. The shared medium couples the data servers to the intermediate nodes. Additionally, the system may include a system controller for controlling the operation of the system and the assignment of processors to the intermediate nodes and to the data servers at the beginning of each service request and thereafter upon each modification request to the service.

摘要翻译： 本发明提供了用于将多个处理器分配给多个数据服务器的系统和方法。 本发明的示例性实施例提供了用于解决CDMA系统中较软切换的发射机/接收机分配问题的系统和方法以及在资源共享环境中需要对处理器进行可变大小分配的任何其它系统。 根据本发明的用于处理从数据服务器接收的数据的系统的示例性实施例包括共享介质，多个处理器和被划分为K组的较小多个中间节点，其中在第k组，每k个处理器相关联 一个中间节点。 共享介质将数据服务器耦合到中间节点。 此外，系统可以包括系统控制器，用于在每个服务请求开始时以及随后对服务的每个修改请求时，控制系统的操作和处理器到中间节点和数据服务器的分配。

公开(公告)号：US20120068780A1

公开(公告)日：2012-03-22

申请号：US12914235

申请日：2010-10-28

申请人： Yuyu Chang ,  John Leete ,  Walid Ahmed ,  Wei Luo

发明人： Yuyu Chang ,  John Leete ,  Walid Ahmed ,  Wei Luo

IPC分类号： H03B5/02

CPC分类号： H03B5/02 ,  H03B5/04 ,  H03B5/32 ,  H03B5/368 ,  H03B2200/0034 ,  H03L1/00

摘要： Methods and systems are provided to calibrate an oscillator circuit to reduce frequency pulling as a result of a change in power to a portion of the oscillator circuit. In an embodiment, an oscillator is coupled to a clock buffer circuit and a tuning capacitor configured to tune a frequency of the oscillator to a baseline frequency required for cellular communications. A change in power to the clock buffer circuit initiates a change in an amount of capacitance seen by the oscillator, which negatively impacts the tuning of the oscillator. A register stores a frequency offset caused by the change in power, and the tuning capacitor is adjusted, using the frequency offset, in response to the change in power, such that the total amount of capacitance seen by the oscillator is not changed when the change in power occurs.

摘要翻译： 提供了方法和系统来校准振荡器电路，以减少振荡器电路的一部分功率变化导致的频率拉动。 在一个实施例中，振荡器耦合到时钟缓冲器电路和调谐电容器，其被配置为将振荡器的频率调谐到蜂窝通信所需的基准频率。 时钟缓冲电路的功率变化启动振荡器看到的电容量的变化，这对振荡器的调谐产生负面影响。 寄存器存储由功率变化引起的频率偏移，并且使用频率偏移来调整调谐电容器以响应功率的变化，使得当变化时振荡器所看到的电容量总和没有改变 发生电力。

公开(公告)号：US20070223621A1

公开(公告)日：2007-09-27

申请号：US11385212

申请日：2006-03-21

申请人： Walid Ahmed

发明人： Walid Ahmed

IPC分类号： H04L25/03

CPC分类号： H04W52/52 ,  H03F1/3247 ,  H03F1/3282 ,  H03F3/24 ,  H03F2200/451 ,  H03F2201/3233 ,  H04L25/03343

摘要： A method and apparatus for signal power ramp-up in a communication transmission. Payload data is identified for transmission. A power reference signal is determined for transmission prior to the payload data. The power reference signal and the payload data are combined to form a data burst for transmission. The combined data burst is transmitted as, wherein the power reference signal is transmitted prior to the payload data within the data burst. A feedback signal is provided based on the power reference signal portion of the transmitted data burst, and a pre-distortion signal is calibrated based on the feedback signal.

摘要翻译： 一种用于通信传输中信号功率提升的方法和装置。 有效负载数据被识别用于传输。 在有效载荷数据之前确定功率参考信号用于传输。 功率参考信号和有效载荷数据被组合以形成用于传输的数据突发。 组合的数据突发被发送，其中功率参考信号在数据突发内的有效载荷数据之前传输。 基于发送的数据脉冲串的功率参考信号部分提供反馈信号，并且基于反馈信号校准预失真信号。

公开(公告)号：US20060255996A1

公开(公告)日：2006-11-16

申请号：US11398060

申请日：2006-04-04

申请人： Chin Li ,  Paul Sheehy ,  Eoin Carey ,  Gerard Quilligan ,  Walid Ahmed

发明人： Chin Li ,  Paul Sheehy ,  Eoin Carey ,  Gerard Quilligan ,  Walid Ahmed

IPC分类号： H03M1/12

CPC分类号： H04W52/52 ,  H03F1/26 ,  H03F3/211 ,  H03F3/24 ,  H03F3/45179 ,  H03F3/45183 ,  H03F3/45475 ,  H03F2200/331 ,  H03F2203/45356 ,  H03H11/1291 ,  H03H11/245 ,  H03M1/0854 ,  H03M1/66

摘要： A power control module receives a dynamic power control signal and generates a differential bias signal proportional to the dynamic power control signal. An analog multiplexer receives a digital amplitude signal including n bits and receives the differential bias signal. The analog multiplexer multiplexes the digital amplitude signal with the differential bias signal in parallel and generates a first differential signal. A driver module receives the first differential signal and a second differential signal. The driver module generates a first drive signal proportional to the dynamic power control signal when a bit in said digital amplitude signal is a logic one and the driver module generates a second drive signal proportional to the second differential signal when a bit in said digital amplitude signal is a logic zero.

摘要翻译： 功率控制模块接收动态功率控制信号并产生与动态功率控制信号成比例的差分偏置信号。 模拟多路复用器接收包括n位的数字幅度信号并接收差分偏置信号。 模拟多路复用器将数字幅度信号与差分偏置信号并行复用，并产生第一差分信号。 驱动器模块接收第一差分信号和第二差分信号。 当所述数字幅度信号中的位为逻辑1时，驱动器模块产生与动态功率控制信号成比例的第一驱动信号，并且当所述数字幅度信号中的位为逻辑1时，驱动器模块产生与第二差分信号成比例的第二驱动信号 是逻辑0。

公开(公告)号：US06947398B1

公开(公告)日：2005-09-20

申请号：US09191132

申请日：1998-11-13

申请人： Walid Ahmed ,  Bharat Tarachand Doshi ,  Subrahmanyam Dravida ,  Hong Jiang ,  Kiran M. Rege

发明人： Walid Ahmed ,  Bharat Tarachand Doshi ,  Subrahmanyam Dravida ,  Hong Jiang ,  Kiran M. Rege

IPC分类号： H04W8/04 ,  H04W8/26 ,  H04W80/04 ,  H04Q7/00

CPC分类号： H04W8/04 ,  H04W8/26 ,  H04W80/04

摘要： An addressing scheme for a packet-based multiaccess mobile communications system, which includes a plurality of mobile user stations and a plurality of network nodes, is provided. In such addressing scheme, each mobile station is assigned an address which is a combination (preferably, a concatenation) of a unique identifier of a network node with which the mobile station is currently associated and an identifier of the mobile station. The network node identifiers may be uniquely assigned by a network administrator, while the identifiers of the mobile stations may, for example, be set to a universal MAC address assigned to the station. The address may also include a port identifier which indicates the particular application flow associated with the accompanying packets. Similarly, each network node is assigned an address which is a combination (preferably, a concatenation) of its network node identifier and, preferably, an interface identifier. The address may also include a port identifier.

摘要翻译： 提供了一种用于基于分组的多接入移动通信系统的寻址方案，其包括多个移动用户站和多个网络节点。 在这种寻址方案中，每个移动台被分配地址，该地址是移动台当前与之相关联的网络节点的唯一标识符和移动站的标识符的组合（优选地，级联）。 网络节点标识符可以由网络管理员唯一地分配，而移动站的标识符可以例如被设置为分配给站的通用MAC地址。 地址还可以包括指示与伴随的分组相关联的特定应用流的端口标识符。 类似地，为每个网络节点分配一个地址，该地址是其网络节点标识符的组合（优选地，连接），并且优选地，接口标识符。 地址还可以包括端口标识符。

公开(公告)号：US08354890B2

公开(公告)日：2013-01-15

申请号：US12914235

申请日：2010-10-28

申请人： Yuyu Chang ,  John Leete ,  Walid Ahmed ,  Wei Luo

发明人： Yuyu Chang ,  John Leete ,  Walid Ahmed ,  Wei Luo

IPC分类号： H03B1/00 ,  H03B5/32

CPC分类号： H03B5/02 ,  H03B5/04 ,  H03B5/32 ,  H03B5/368 ,  H03B2200/0034 ,  H03L1/00

摘要： Methods and systems are provided to calibrate an oscillator circuit to reduce frequency pulling as a result of a change in power to a portion of the oscillator circuit. In an embodiment, an oscillator is coupled to a clock buffer circuit and a tuning capacitor configured to tune a frequency of the oscillator to a baseline frequency required for cellular communications. A change in power to the clock buffer circuit initiates a change in an amount of capacitance seen by the oscillator, which negatively impacts the tuning of the oscillator. A register stores a frequency offset caused by the change in power, and the tuning capacitor is adjusted, using the frequency offset, in response to the change in power, such that the total amount of capacitance seen by the oscillator is not changed when the change in power occurs.

摘要翻译： 提供了方法和系统来校准振荡器电路，以减少振荡器电路的一部分功率变化导致的频率拉动。 在一个实施例中，振荡器耦合到时钟缓冲器电路和调谐电容器，其被配置为将振荡器的频率调谐到蜂窝通信所需的基准频率。 时钟缓冲电路的功率变化启动振荡器看到的电容量的变化，这对振荡器的调谐产生负面影响。 寄存器存储由功率变化引起的频率偏移，并且使用频率偏移来调整调谐电容器以响应功率的变化，使得当变化时振荡器所看到的电容量总和没有改变 发生电力。

公开(公告)号：US07395493B2

公开(公告)日：2008-07-01

申请号：US10161812

申请日：2002-06-04

申请人： Walid Ahmed ,  Juan G. Gonzalez ,  Salim Manji ,  Jose Luis Paredes

发明人： Walid Ahmed ,  Juan G. Gonzalez ,  Salim Manji ,  Jose Luis Paredes

IPC分类号： H03M13/03

CPC分类号： H04L25/03292

摘要： The present invention provides systems and methods for adaptively decoding transmitted frames efficiently in non-Gaussian, non-stationary environments. One such system comprises a decoder adapted to decode a received transmission frame using a decoding scheme, a channel assessment unit for sensing channel characteristics, and a tuning unit for adjusting the decoding scheme based, at least in part, on channel characteristics sensed by the channel assessment unit.

摘要翻译： 本发明提供了用于在非高斯非平稳环境中有效地自适应地解码发送帧的系统和方法。 一种这样的系统包括：解码器，其适于使用解码方案对接收到的传输帧进行解码;用于感测信道特性的信道评估单元;以及用于至少部分地基于由信道感测的信道特性来调整解码方案的调谐单元 评估单位

公开(公告)号：US07373151B1

公开(公告)日：2008-05-13

申请号：US09379675

申请日：1999-08-24

申请人： Walid Ahmed

发明人： Walid Ahmed

IPC分类号： H04Q7/20

CPC分类号： H04W72/082 ,  H04W28/08 ,  H04W72/0486

摘要： A distributed dynamic channel allocation algorithm for a multi-carrier CDMA cellular system having at least one mobile base station. The distributed dynamic channel allocation algorithm uses channel power measurements from both the requesting mobile station and the mobile base station attempting to allocate an available resource to the mobile station. The distributed dynamic channel allocation algorithm attempts to allocate the best available resource for the requesting mobile station, in terms of interference, while minimizing the amount of interruption that the allocated resource may cause to existing connections in neighboring cells. Thus, the distributed dynamic channel allocation algorithm follows a “least-interference, least-interruption” strategy. The distributed dynamic channel allocation algorithm is load balancing, since it tends to assign new resources to mobile base station with lighter loads.

摘要翻译： 一种用于具有至少一个移动基站的多载波CDMA蜂窝系统的分布式动态信道分配算法。 分布式动态信道分配算法使用来自请求移动台和移动基站的信道功率测量，尝试向移动台分配可用资源。 分布式动态信道分配算法尝试在干扰方面为请求移动台分配最佳可用资源，同时最小化所分配的资源可能对相邻小区中的现有连接造成的中断量。 因此，分布式动态信道分配算法遵循“最小干扰，最小中断”策略。 分布式动态信道分配算法是负载平衡，因为它倾向于为较轻负载的移动基站分配新的资源。