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    Method and apparatus for merging neighbor lists in a CDMA mobile telephone system
    5.
    发明授权
    Method and apparatus for merging neighbor lists in a CDMA mobile telephone system 失效
    用于在CDMA移动电话系统中合并邻居列表的方法和装置

    公开(公告)号：US5982758A

    公开(公告)日：1999-11-09

    申请号：US800931

    申请日：1997-02-13

    申请人： Walid M. Hamdy

    发明人： Walid M. Hamdy

    IPC分类号： H04W36/08 ,  H04W36/18 ,  H04W36/30 ,  H04W36/38 ,  H04W48/14 ,  H04Q7/00

    CPC分类号： H04W36/0061

    摘要： In a code division multiple access (CDMA) spread spectrum cellular communication system in which a mobile station user communicates with another system user via at least one base station, wherein each base station transmits a common pilot signal of a different PN offset with respect to other base stations in said system, a method for merging neighbor lists to account for false indications of signal strength due to topography. The merged list, included as part of the Neighbor List Update Message, is arrived at by first measuring pilot signal strengths and phase delays received by the mobile station and reporting this information to the mobile telephone switching office. At the mobile telephone switching office, pilots whose phase delay indicates a large round trip delay time are ignored in subsequent calculations. Then a neighbor list union is generated as the union of all predetermined neighbor lists corresponding to said received pilot signals. Each member, or base station, in the neighbor list union is operated on by a weighting function which takes into account how often each member is included in each received pilot's predetermined neighbor list and the signal strength of such pilots. The relative weights are then sorted and the highest ranking members form the Neighbor List Update Message, up to a predetermined number of members.

    摘要翻译： 在码分多址（CDMA）扩频蜂窝通信系统中，移动台用户经由至少一个基站与另一系统用户通信，其中每个基站相对于其他基站发送不同PN偏移的公共导频信号 所述系统中的基站，用于合并邻居列表以解决由于地形的信号强度的错误指示的方法。 通过首先测量由移动台接收到的导频信号强度和相位延迟并将该信息报告给移动电话交换局，来合并列为邻居列表更新消息的一部分。 在移动电话交换局，后续计算中忽略相位延迟指示大的往返延迟时间的导频。 然后，生成邻居列表联合作为对应于所接收的导频信号的所有预定邻居列表的并集。 每个成员或基站在邻居列表联盟中通过加权函数来操作，该加权函数考虑到每个成员被包括在每个接收到的导频的预定邻居列表中的频率以及这种导频的信号强度。 然后对相对权重进行排序，最高排名成员形成相邻列表更新消息，直到预定数量的成员。

    Pilot signal searching technique for a cellular communications system
    7.
    发明授权
    Pilot signal searching technique for a cellular communications system 失效
    蜂窝通信系统的导频信号搜索技术

    公开(公告)号：US5577022A

    公开(公告)日：1996-11-19

    申请号：US344321

    申请日：1994-11-22

    申请人： Roberto Padovani ,  Walid M. Hamdy ,  Gil Bar-David

    发明人： Roberto Padovani ,  Walid M. Hamdy ,  Gil Bar-David

    IPC分类号： H04B1/707 ,  H04B7/26 ,  H04W36/30 ,  H04B7/216 ,  H04J13/02 ,  H04L27/30

    CPC分类号： H04W36/30 ,  H04B1/707 ,  H04B7/2637

    摘要： An improved method and system for performing a pilot signal searching operation in anticipation of handoff in mobile station communication between base stations is disclosed herein. The searching operation is described herein as being implemented within a cellular communication system which uses code division multiple access (CDMA) modulation techniques. The mobile station maintains a list of an Active Set of pilot signals transmitted from base stations with which the mobile station is to communicate through, and a Neighbor Set of pilots from base stations within a predetermined proximity of the mobile station. In addition to the Neighbor and Active Sets of pilots, the mobile station maintains a list of Candidate and Pre-Candidate Sets of pilots. Based on analysis of the signal strength of the pilot signals received at the mobile station, base station entries from the Neighbor Set may be assigned to the Pre-Candidate and Candidate Sets, and eventually to the Active set. The searching operation contemplates comparing pilot signal strength measurements corresponding to each base station entry within the Neighbor Set to a first predetermined level. One or more entries from the Neighbor Set having a base station signal strength measurement greater than the first predetermined level may be placed in the Pre-Candidate Set. The strength of the pilot signals associated with entries in the Pre-Candidate Set are then further evaluated to determine eligibility within the Candidate Set, from which are selected the entries comprising the Active Set.

    摘要翻译： 这里公开了一种用于在预期基站之间的移动台通信中切换的执行导频信号搜索操作的改进方法和系统。 搜索操作在本文中被描述为在使用码分多址（CDMA）调制技术的蜂窝通信系统内实现。 移动台维护从移动台要与之进行通信的基站发送的导频信号的活动集的列表，以及来自移动台的预定接近范围内的基站的导频的相邻集合。 除了邻近和有效的飞行员组外，移动台还保留有候选和预先考虑的飞行员组列表。 基于在移动站处接收的导频信号的信号强度的分析，可以将来自邻居集的基站条目分配给预先考虑和候选集，并最终分配给活动集。 搜索操作考虑将对应于相邻集合内的每个基站条目的导频信号强度测量值与第一预定电平进行比较。 具有大于第一预定水平的基站信号强度测量的来自邻居集合的一个或多个条目可以被放置在预先考虑集合中。 然后进一步评估与候选集中的条目相关联的导频信号的强度，以确定候选集中的资格，从中选择包含活动集的条目。

    APPARATUS AND METHOD FOR ADJUSTMENT OF TRANSMITTER POWER IN A SYSTEM
    8.
    发明申请
    APPARATUS AND METHOD FOR ADJUSTMENT OF TRANSMITTER POWER IN A SYSTEM 审中-公开
    用于调整系统中发射机功率的装置和方法

    公开(公告)号：US20120021707A1

    公开(公告)日：2012-01-26

    申请号：US13190228

    申请日：2011-07-25

    申请人： John A. Forrester ,  Paul Guckian ,  Lin Lu ,  Reza Shahadi ,  Amit Mahajan ,  Walid M. Hamdy ,  Francis M. Ngai

    发明人： John A. Forrester ,  Paul Guckian ,  Lin Lu ,  Reza Shahadi ,  Amit Mahajan ,  Walid M. Hamdy ,  Francis M. Ngai

    IPC分类号： H04W52/16 ,  H04W52/18

    CPC分类号： H04W52/30 ,  H04W52/226 ,  H04W52/281 ,  H04W52/42

    摘要： Certain aspects of the present disclosure propose methods for determining power level of one or more transmitters based on a power level of a primary transmitter when the transmitters are located in close proximity of each other. The power levels may be determined such that a combined power of all the transmitters is compliant with regulatory radio frequency (RF) safety requirements. For certain aspects, power level of the lower priority transmitters may be determined utilizing one or more look-up tables. For another aspect, power level of the lower priority transmitters may be calculated using an algorithm based on the power level of the priority transmitter. In aspects, the power level of lower priority transmitters and the time duration for which the transmitters are active may be selected dynamically so that the time averaged power of the transmitters for a defined period of time falls below the RF exposure limit.

    摘要翻译： 本公开的某些方面提出了当发射机位于彼此靠近时基于主发射机的功率电平来确定一个或多个发射机的功率电平的方法。 可以确定功率电平，使得所有发射机的组合功率符合调节射频（RF）安全要求。 对于某些方面，可以利用一个或多个查找表来确定较低优先级发射机的功率电平。 另一方面，可以使用基于优先发射机的功率电平的算法来计算较低优先级发射机的功率电平。 在方面中，可以动态地选择较低优先级发射机的功率电平和发射机有效的持续时间，使得发射机在定义的时间段内的时间平均功率低于RF暴露极限。