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    Accurate calculation of the probability of outage for the CDMA reverse link
    11.
    发明授权
    Accurate calculation of the probability of outage for the CDMA reverse link 失效
    准确计算CDMA反向链路中断概率

    公开(公告)号：US6097956A

    公开(公告)日：2000-08-01

    申请号：US957278

    申请日：1997-10-24

    Applicant: Venugopal Veeravalli ,  Andrew Sendonaris ,  Nikhil Jain

    Inventor： Venugopal Veeravalli ,  Andrew Sendonaris ,  Nikhil Jain

    IPC: H04W16/18 ,  H04Q7/20

    CPC classification number: H04W16/18

    Abstract: Accurate calculation of the probability of outage for a cell within a CDMA network is utilized to relate cell coverage to cell capacity. Based on a desired probability of outage, the coverage of the cell may be calculated for an average number of users within the cell. The calculation is independent of the admission policy employed to achieve the specified average number of users. The resulting closed form expression for the tradeoff between coverage and carried traffic allows an optimal design of a CDMA network.

    Abstract translation: 使用CDMA网络内的小区的中断概率的精确计算将小区覆盖范围与小区容量相关联。 基于期望的中断概率，可以针对小区内的平均用户数来计算小区的覆盖范围。 计算独立于实现特定平均用户数的入学政策。 用于覆盖和携带业务之间权衡的所得闭合形式表达式允许CDMA网络的最佳设计。

    Method for optimizing cell-site placement
    12.
    发明授权
    Method for optimizing cell-site placement 失效
    优化细胞位置放置的方法

    公开(公告)号：US06094580A

    公开(公告)日：2000-07-25

    申请号：US951685

    申请日：1997-10-16

    Applicant: Chang Yu ,  Sairam Subramanian ,  Andrew Sendonaris ,  Sheng-Chou Lin ,  Mohamed Landolsi ,  Nikhil Jain ,  Seshu Madhavapeddy ,  Stone Tseng ,  Venugopal Veeravalli

    Inventor： Chang Yu ,  Sairam Subramanian ,  Andrew Sendonaris ,  Sheng-Chou Lin ,  Mohamed Landolsi ,  Nikhil Jain ,  Seshu Madhavapeddy ,  Stone Tseng ,  Venugopal Veeravalli

    IPC: H04W16/18 ,  H04B17/00

    CPC classification number: H04W16/18

    Abstract: Provided herein is a computer-implemented method for generating an optimized cellular-network cell-site plan for an area. A plurality of cellular-traffic demand nodes distributed across the area is provided. Each cellular-traffic demand node of the plurality of cellular-traffic demand nodes has an associated weighting characteristics set. The plurality of nodes are consolidated into a plurality of centroids. Each centroid represents a number of nodes that come within a traffic threshold. A potential cell site is positioned on each of the centroids. Each potential cell site has an associated base-transmitter-station parameter characteristics set. The demand node coverage of each potential cell site is determined with respect to a signal strength of the potential cell site. From the plurality of potential cell sites a minimized cell-site subset is selected while maintaining sufficient cellular service coverage of the plurality of demand nodes.

    Abstract translation: 本文提供了一种用于为区域生成优化的蜂窝网络小区站点计划的计算机实现的方法。 提供分布在该区域上的多个蜂窝业务需求节点。 多个蜂窝业务需求节点中的每个蜂窝业务需求节点具有相关联的权重特征集合。 多个节点被合并为多个质心。 每个质心代表流量阈值内的多个节点。 潜在的细胞位点位于每个质心上。 每个潜在的小区站点都具有一个相关的基站 - 发射台参数特征集。 相对于潜在细胞位点的信号强度确定每个潜在细胞位点的需求节点覆盖。 从多个潜在的小区站点中选择最小化的小区站点子集，同时维持多个需求节点的足够的蜂窝业务覆盖。

    Communication system performance using position location information
    15.
    发明授权
    Communication system performance using position location information 有权
    通信系统性能使用位置信息

    公开(公告)号：US07420947B2

    公开(公告)日：2008-09-02

    申请号：US10650270

    申请日：2003-08-28

    Applicant: Andrew Sendonaris ,  Da-Shan Shiu ,  David Patterson ,  Pavathanathan Subrahmanya ,  Daisuke Terasawa

    Inventor： Andrew Sendonaris ,  Da-Shan Shiu ,  David Patterson ,  Pavathanathan Subrahmanya ,  Daisuke Terasawa

    IPC: H04B7/216

    CPC classification number: H04B1/70754

    Abstract: A method and apparatus for using information about a mobile terminal's location relative to a base station can improve performance of a communication system. In addition, information about the mobile terminal's velocity relative to the base station may be used to improve performance of the communication system. The location information may be used to estimate a nominal PN offset, and a set of PN offset to use, for processing communication signals. The velocity information may be used to estimate a nominal frequency of the communication signals.

    Abstract translation: 使用关于移动终端相对于基站的位置的信息的方法和装置可以提高通信系统的性能。 另外，可以使用关于移动终端相对于基站的速度的信息来改善通信系统的性能。 可以使用位置信息来估计用于处理通信信号的标称PN偏移和要使用的一组PN偏移。 速度信息可以用于估计通信信号的标称频率。

    Reliability determination and combining of power control commands received in a wireless communication system
    16.
    发明授权
    Reliability determination and combining of power control commands received in a wireless communication system 有权
    在无线通信系统中接收的功率控制命令的可靠性确定和组合

    公开(公告)号：US07340268B2

    公开(公告)日：2008-03-04

    申请号：US10457846

    申请日：2003-06-10

    Applicant: Hyukjun Oh ,  Parvathanathan Subrahmanya ,  Nitin Kasturi ,  Messay Amerga ,  Chih-Ping Hsu ,  Christopher C. Riddle ,  Andrew Sendonaris

    Inventor： Hyukjun Oh ,  Parvathanathan Subrahmanya ,  Nitin Kasturi ,  Messay Amerga ,  Chih-Ping Hsu ,  Christopher C. Riddle ,  Andrew Sendonaris

    IPC: H04B7/00 ,  H04Q7/20

    CPC classification number: H04W52/56 ,  H04W52/40 ,  H04W52/58

    Abstract: The reliability of transmit power control (TPC) commands received from a transmitter is determined based on a TPC target value. The TPC target value is derived based on a TPC threshold and possibly a weight, depending on the receiver implementation. A received TPC command is considered reliable if its absolute value exceeds the TPC target value. Received TPC commands deemed as unreliable are discarded and not used for power control. Multiple TPC target values, used for detecting UP and DOWN commands, may be derived with multiple scaling factors. For a receiver in soft handover and receiving TPC commands from multiple transmitters, a different TPC target value may be derived for each transmitter. The received TPC commands for each transmitter are compared against that transmitter's TPC target value. Received TPC commands deemed as unreliable are discarded and not combined.

    Abstract translation: 基于TPC目标值确定从发射机接收的发射功率控制（TPC）命令的可靠性。 TPC目标值基于TPC阈值和可能的权重导出，这取决于接收机实现。 如果接收到的TPC命令的绝对值超过TPC目标值，则认为它是可靠的。 被认为不可靠的TPC命令被丢弃，不用于功率控制。 用于检测UP和DOWN命令的多个TPC目标值可以用多个缩放因子导出。 对于软切换中的接收机和从多个发射机接收TPC命令，可以为每个发射机导出不同的TPC目标值。 每个发射机接收的TPC命令与该发射机的TPC目标值进行比较。 被认为不可靠的TPC命令被丢弃并不组合。

    Frequency tracking using pilot and non-pilot symbols
    18.
    发明授权
    Frequency tracking using pilot and non-pilot symbols 有权

    公开(公告)号：US07092459B2

    公开(公告)日：2006-08-15

    申请号：US10006903

    申请日：2001-11-08

    Applicant: Andrew Sendonaris

    Inventor： Andrew Sendonaris

    IPC: H04L27/14

    CPC classification number: H04L27/0014 ,  H04L2027/0065

    Abstract: In one embodiment, the invention is directed toward frequency tracking techniques using control symbols that include both pilot and non-pilot symbols. For example, both the pilot and non-pilot symbols can be used in estimating frequency error of a received signal. The contribution of non-pilot symbols to the estimation can be weighted according to a confidence level associated with each non-pilot symbol. In some cases, soft decisions are generated for the non-pilot symbols and then used with the pilot symbols for frequency tracking. In this manner, the frequency tracking loop can be improved.

    Control of transit power during out-of-lock condition
    19.
    发明授权
    Control of transit power during out-of-lock condition 失效
    超出锁定状态时的过境功率控制

    公开(公告)号：US06754254B2

    公开(公告)日：2004-06-22

    申请号：US10007870

    申请日：2001-11-09

    Applicant: Andrew Sendonaris

    Inventor： Andrew Sendonaris

    IPC: H04B169

    CPC classification number: H04W52/24 ,  H04B1/7115

    Abstract: When all of the fingers of a wireless rake receiver are “out-of-lock,” the transmit power is initially maintained at a constant level. When the “out-of-lock” condition persists for an extended period of time, transmit power is increased in an effort to reacquire a lock with a subscriber unit or base station, as the case may be. An increase in transmit power may be effective in reacquiring lock when the cause of the out-of-lock condition is slow fading, rather than fast fading. Slow fading may be evidenced by persistence of the out-of-lock condition for an extended period of time. The length of the out-of-lock condition is used to selectively control transmit power and thereby promote quality of service. Transmit power is only increased when the fingers remain out-of-lock for an extended period of time, thereby avoiding undue increases in transmit power that could produce interference among different subscriber units.

    Abstract translation: 当无线耙式接收机的所有指状物都“锁定不足”时，发射功率最初保持在恒定水平。 当“失锁”状态持续较长时间时，增加发射功率，努力重新获取用户单元或基站（视具体情况而定）的锁定。 当失锁状态的原因缓慢衰落而不是快速衰落时，发送功率的增加可能有效地重新获取锁定。 缓慢的衰落可以通过长时间的失锁状态的持续来证明。 锁定状态的长度用于选择性地控制发射功率，从而提高服务质量。 只有当手指长时间保持锁定时，才能增加发射功率，从而避免可能在不同用户单元之间产生干扰的发射功率的过度增加。

    Estimation of mobility for network planning based on highway maps and traffic data
    20.
    发明授权
    Estimation of mobility for network planning based on highway maps and traffic data 失效
    基于公路图和交通数据估计网络规划的移动性

    公开(公告)号：US6141552A

    公开(公告)日：2000-10-31

    申请号：US971441

    申请日：1997-11-17

    Applicant: Andrew Sendonaris ,  Hongyi Chen ,  Nikhil Jain ,  Seshagri Madhavapeddy ,  Sairam Subramanian

    Inventor： Andrew Sendonaris ,  Hongyi Chen ,  Nikhil Jain ,  Seshagri Madhavapeddy ,  Sairam Subramanian

    IPC: H04W16/18 ,  H04Q7/00

    CPC classification number: H04W16/18

    Abstract: The mobility of mobile subscribers within a wireless digital communications system is estimated based on highway maps and traffic data. Cells within the network are modelled as nodes connected by edges where neighboring cells are connected by roads. Each edge has two edge weight components representing traffic flow from one cell to the other and vice versa. The edge weight components are calculated from terrain factors based on the size or capacity of the roads connecting the two cells and the total traffic within the subject cell, which information may be obtained from commercial geographic databases and/or government agencies. The resulting edge weight represents an expected number of handoffs between the two cells. The problem of partitioning cells among available switches within the network is thus reduced to the purely mathematical problem of minimizing the total edge weights of edges intersected by the partition boundaries. Existing mathematical optimization techniques for optimizing node-edge systems may therefore be applied to reduce the total number of expected inter-switch handoffs as mobile subscribers pass from cell to cell within the network.

    Abstract translation: 基于高速公路地图和交通数据估计无线数字通信系统内移动用户的移动性。 网络内的小区被建模为通过边缘连接的节点，其中相邻小区通过道路连接。 每个边缘具有两个边缘权重分量，表示从一个小区到另一个小区的业务流量，反之亦然。 基于连接两个小区的道路的大小或容量以及主体小区内的总流量，从地形因子计算边缘权重分量，该信息可以从商业地理数据库和/或政府机构获得。 所得到的边缘权重表示两个单元之间的预期切换次数。 因此，将网络内的可用交换机之间的小区划分成一个问题，从而减少了将分区边界相交的边缘的总边缘权重最小化的纯数学问题。 因此，用于优化节点边缘系统的现有数学优化技术可以被应用于当移动用户从网络中的小区传送到小区时，减少预期的交换机间切换的总数。

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