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    Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system
    1.
    发明授权
    Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system 失效
    用于减少在CDMA蜂窝通信系统中同时访问基站的移动站之间的消息冲突的装置和方法

    公开(公告)号：US07734260B2

    公开(公告)日：2010-06-08

    申请号：US11622383

    申请日：2007-01-11

    申请人： Edward G. Tiedemann, Jr. ,  Lindsay A. Weaver, Jr. ,  Roberto Padovani

    发明人： Edward G. Tiedemann, Jr. ,  Lindsay A. Weaver, Jr. ,  Roberto Padovani

    IPC分类号： H04B1/04

    CPC分类号： H04W74/0841 ,  H04B1/707 ,  H04B1/7103 ,  H04B7/2628 ,  H04B2201/709709 ,  H04J13/0022 ,  H04J13/10 ,  H04J13/16 ,  H04L1/188 ,  H04L1/1887 ,  H04W52/48 ,  H04W52/50 ,  H04W74/002 ,  H04W74/08 ,  H04W74/0833 ,  H04W74/0866

    摘要： Collisions between messages simultaneously transmitted by multiple spread-spectrum transmitters are reduced by distributing the transmissions over the available resources of the receiver. Each mobile station in a CDMA system uses one or more randomization methods to distribute its transmissions. In the first randomization, the mobile station time-delays its transmissions by a number of chips of the PN code with which it spreads the transmitted signal. In a second randomization, the mobile station randomly selects the PN code. In a third randomization, the mobile station inserts a random delay between successive message transmissions or probes if it does not receive an acknowledgement after a predetermined timeout period. A predetermined number of such transmissions is called a probe sequence. In a fourth randomization, the mobile station inserts a relatively long random delay between successive probe sequences if it does not receive an acknowledgement of any probe in the sequence.

    摘要翻译： 通过在接收机的可用资源上分发传输来减少由多个扩频发射机同时发送的消息之间的冲突。 CDMA系统中的每个移动站使用一种或多种随机化方法来分发其传输。 在第一次随机化中，移动台通过PN码的多个码片对其发送进行时间延迟，并通过该芯片扩展发送的信号。 在第二随机化中，移动台随机选择PN码。 在第三次随机化中，如果移动台在预定的超时时段之后没有接收到确认，则在连续的消息传输或探测之间插入随机延迟。 预定数量的这种传输被称为探测序列。 在第四随机化中，如果移动台在序列中没有接收到任何探测器的确认，则在连续探测序列之间插入相对长的随机延迟。

    Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system
    3.
    发明授权
    Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system 失效
    用于减少在CDMA蜂窝通信系统中同时访问基站的移动站之间的消息冲突的装置和方法

    公开(公告)号：US07426391B2

    公开(公告)日：2008-09-16

    申请号：US11622403

    申请日：2007-01-11

    申请人： Edward G. Tiedemann, Jr. ,  Lindsay A. Weaver, Jr. ,  Roberto Padovani

    发明人： Edward G. Tiedemann, Jr. ,  Lindsay A. Weaver, Jr. ,  Roberto Padovani

    IPC分类号： H04Q7/20

    CPC分类号： H04W74/0841 ,  H04B1/707 ,  H04B1/7103 ,  H04B7/2628 ,  H04B2201/709709 ,  H04J13/0022 ,  H04J13/10 ,  H04J13/16 ,  H04L1/188 ,  H04L1/1887 ,  H04W52/48 ,  H04W52/50 ,  H04W74/002 ,  H04W74/08 ,  H04W74/0833 ,  H04W74/0866

    摘要： Collisions between messages simultaneously transmitted by multiple spread-spectrum transmitters are reduced by distributing the transmissions over the available resources of the receiver. Each mobile station in a CDMA system uses one or more randomization methods to distribute its transmissions. In the first randomization, the mobile station time-delays its transmissions by a number of chips of the PN code with which it spreads the transmitted signal. In a second randomization, the mobile station randomly selects the PN code. In a third randomization, the mobile station inserts a random delay between successive message transmissions or probes if it does not receive an acknowledgement after a predetermined timeout period. A predetermined number of such transmissions is called a probe sequence. In a fourth randomization, the mobile station inserts a relatively long random delay between successive probe sequences if it does not receive an acknowledgement of any probe in the sequence.

    摘要翻译： 通过在接收机的可用资源上分发传输来减少由多个扩频发射机同时发送的消息之间的冲突。 CDMA系统中的每个移动站使用一种或多种随机化方法来分发其传输。 在第一次随机化中，移动台通过PN码的多个码片对其发送进行时间延迟，并通过该芯片扩展发送的信号。 在第二随机化中，移动台随机选择PN码。 在第三随机化中，如果移动台在预定的超时时段之后没有接收到确认，则在连续的消息传输或探测之间插入随机延迟。 预定数量的这种传输被称为探测序列。 在第四随机化中，如果移动台在序列中没有接收到任何探测器的确认，则在连续探测序列之间插入相对长的随机延迟。

    Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system
    5.
    发明授权
    Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system 失效
    用于减少在CDMA蜂窝通信系统中同时访问基站的移动站之间的消息冲突的装置和方法

    公开(公告)号：US5544196A

    公开(公告)日：1996-08-06

    申请号：US219867

    申请日：1994-03-30

    申请人： Edward G. Tiedemann, Jr. ,  Lindsay A. Weaver, Jr. ,  Roberto Padovani

    发明人： Edward G. Tiedemann, Jr. ,  Lindsay A. Weaver, Jr. ,  Roberto Padovani

    IPC分类号： H04B1/707 ,  H04B1/7103 ,  H04B7/26 ,  H04J13/00 ,  H04J13/10 ,  H04J13/16 ,  H04L1/16 ,  H04L12/28 ,  H04L12/403 ,  H04L12/413 ,  H04L27/30 ,  H04W28/04 ,  H04W52/48 ,  H04W52/50 ,  H04W74/00 ,  H04W74/08 ,  H04B1/69 ,  H04J13/04

    CPC分类号： H04W74/0841 ,  H04B1/707 ,  H04B1/7103 ,  H04B7/2628 ,  H04J13/0022 ,  H04J13/10 ,  H04J13/16 ,  H04L1/1887 ,  H04W52/48 ,  H04W52/50 ,  H04W74/0833 ,  H04B2201/709709 ,  H04L1/188 ,  H04W74/002 ,  H04W74/08 ,  H04W74/0866 ,  Y02B60/50

    摘要： Collisions between messages simultaneously transmitted by multiple spread-spectrum transmitters are reduced by distributing the transmissions over the available resources of the receiver. The transmitters may be mobile stations and the receiver may be a base station in a CDMA cellular telephone system. Each mobile station uses one or more randomization methods to distribute its transmissions. In the first randomization, the mobile station time--delays its transmissions by a number of chips of the PN code with which it spreads the transmitted signal. A hash function produces the number from an identification number uniquely associated with that mobile station. In a second randomization, the mobile station randomly selects the PN code. In a third randomization, the mobile station inserts a random delay between successive message transmissions or probes if it does not receive an acknowledgement after a predetermined timeout period. A predetermined number of such transmissions is called a probe sequence. In a fourth randomization, the mobile station inserts a relatively long random delay between successive probe sequences if it does not receive an acknowledgement of any probe in the sequence. The noise level is reduced by minimizing transmission power. The mobile station increments the power of successive probes within each probe sequence. The first probe of each probe sequence is transmitted at a predetermined level.

    摘要翻译： 通过在接收机的可用资源上分发传输来减少由多个扩频发射机同时发送的消息之间的冲突。 发射机可以是移动台，并且接收机可以是CDMA蜂窝电话系统中的基站。 每个移动台使用一种或多种随机化方法来分发其传输。 在第一次随机化中，移动台通过PN码的多个码片对其发送进行时间延迟，并通过该芯片扩展发送的信号。 散列函数从与该移动站唯一相关联的识别号码产生数字。 在第二随机化中，移动台随机选择PN码。 在第三次随机化中，如果移动台在预定的超时时段之后没有接收到确认，则在连续的消息传输或探测之间插入随机延迟。 预定数量的这种传输被称为探测序列。 在第四随机化中，如果移动台在序列中没有接收到任何探测器的确认，则在连续探测序列之间插入相对长的随机延迟。 通过最小化传输功率降低噪声电平。 移动台在每个探测序列内递增连续探测的能力。 每个探针序列的第一探针以预定水平传输。

    Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communication system
    6.
    发明授权
    Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communication system 失效
    用于减少在CDMA蜂窝通信系统中同时访问基站的移动台之间的消息冲突的装置和方法

    公开(公告)号：US06615050B1

    公开(公告)日：2003-09-02

    申请号：US08588149

    申请日：1996-01-18

    申请人： Edward G. Tiedemann, Jr. ,  Lindsay A. Weaver, Jr. ,  Roberto Padovani

    发明人： Edward G. Tiedemann, Jr. ,  Lindsay A. Weaver, Jr. ,  Roberto Padovani

    IPC分类号： H04Q720

    CPC分类号： H04W74/0841 ,  H04B1/707 ,  H04B1/7103 ,  H04B7/2628 ,  H04B2201/709709 ,  H04J13/0022 ,  H04J13/10 ,  H04J13/16 ,  H04L1/188 ,  H04L1/1887 ,  H04W52/48 ,  H04W52/50 ,  H04W74/002 ,  H04W74/08 ,  H04W74/0833 ,  H04W74/0866

    摘要： Collisions between messages simultaneously transmitted by multiple spread-spectrum transmitters are reduced by distributing the transmissions over the available resources of the receiver. The transmitters may be mobile stations and the receiver may be a base station in a CDMA cellular telephone system. Each mobile station uses one or more randomization methods to distribute its transmissions. In the first randomization, the mobile station time-delays its transmissions by a number of chips of the PN code with which it spreads the transmitted signal. A hash function produces the number from an identification number uniquely associated with that mobile station. In a second randomization, the mobile station randomly selects the PN code. In a third randomization, the mobile station inserts a random delay between successive message transmissions or probes if it does not receive an acknowledgement after a predetermined timeout period. A predetermined number of such transmissions is called a probe sequence. In a fourth randomization, the mobile station inserts a relatively long random delay between successive probe sequences if it does not receive an acknowledgement of any probe in the sequence. The noise level is reduced by minimizing transmission power. The mobile station increments the power of successive probes within each probe sequence. The first probe of each probe sequence is transmitted at a predetermined level.

    摘要翻译： 通过在接收机的可用资源上分发传输来减少由多个扩频发射机同时发送的消息之间的冲突。 发射机可以是移动台，接收机可以是CDMA蜂窝电话系统中的基站。 每个移动台使用一种或多种随机化方法来分发其传输。 在第一次随机化中，移动台通过PN码的多个码片对其发送进行时间延迟，并通过该芯片扩展发送的信号。 散列函数从与该移动站唯一相关联的识别号码产生数字。 在第二随机化中，移动台随机选择PN码。 在第三次随机化中，如果移动台在预定的超时时段之后没有接收到确认，则在连续的消息传输或探测之间插入随机延迟。 预定数量的这种传输被称为探测序列。 在第四随机化中，如果移动台在序列中没有接收到任何探测器的确认，则在连续探测序列之间插入相对长的随机延迟。 通过最小化传输功率降低噪声电平。 移动台在每个探测序列内递增连续探测的能力。 每个探针序列的第一探针以预定水平传输。

    Method and apparatus for testing a digital communication channel
    8.
    发明授权
    Method and apparatus for testing a digital communication channel 失效
    用于测试数字通信信道的方法和装置

    公开(公告)号：US5802105A

    公开(公告)日：1998-09-01

    申请号：US347526

    申请日：1994-11-30

    申请人： Edward G. Tiedemann, Jr. ,  Yu-Cheun Jou ,  Lindsay A. Weaver, Jr. ,  Gwain Bayley

    发明人： Edward G. Tiedemann, Jr. ,  Yu-Cheun Jou ,  Lindsay A. Weaver, Jr. ,  Gwain Bayley

    IPC分类号： H04L1/00 ,  H04B3/46 ,  H04B7/26 ,  H04B17/00 ,  H04L1/20 ,  H04L1/24 ,  H04L27/00 ,  H04L29/08 ,  H04L29/14

    CPC分类号： H04L1/20 ,  H04L1/241 ,  H04L1/242 ,  H04L2027/0034

    摘要： A system and method for testing signal transmission quality within a digital communication system is disclosed herein. The system may be incorporated within a digital cellular communication system in which information is exchanged over spread spectrum communication channels, among a plurality of mobile users, via at least one cell-site. The system contemplates testing a digital communication channel by transmitting a test sequence of digital data over the communication channel. The test sequence of digital data transmitted over the communication channel is received at a receiving station, within which is also generated a replica of the test sequence of digital data. The accuracy of transmission over the communication channel is then determined by comparing the replica of the test sequence of digital data to the test sequence of data received over the communication channel. The system allows the test sequence of digital data to be transmitted at one of a set of known data rates, with the receive station being disposed to identify the data rate associated with each test sequence of digital data. In a preferred implementation transmission of the test sequence involves generating a first plurality of data packets, which collectively comprise the test sequence of digital data. Each data packet is assigned one of a multiplicity of data rates in accordance with a first pseudorandom process, and is then transmitted at the data rate assigned thereto.

    摘要翻译： 本文公开了一种用于测试数字通信系统内的信号传输质量的系统和方法。 该系统可以并入到数字蜂窝通信系统中，其中通过至少一个小区站点在多个移动用户之间通过扩频通信信道交换信息。 该系统考虑通过在通信信道上发送数字数据的测试序列来测试数字通信信道。 通过通信信道发送的数字数据的测试序列在接收站处被接收，在接收站中也产生数字数据的测试序列的副本。 然后通过将数字数据的测试序列的副本与通过通信信道接收的数据的测试序列进行比较来确定通信信道上的传输的准确性。 该系统允许数字数据的测试序列以一组已知数据速率中的一种传输，其中接收站被设置为识别与数字数据的每个测试序列相关联的数据速率。 在优选实施例中，测试序列的传输涉及生成第一多个数据分组，其共同地包括数字数据的测试序列。 每个数据分组根据第一伪随机过程分配多个数据速率中的一个，然后以分配给它的数据速率发送。

    Mobile station assisted soft handoff in a CDMA cellular communications system
    9.
    发明授权
    Mobile station assisted soft handoff in a CDMA cellular communications system 失效
    移动台在CDMA蜂窝通信系统中辅助软切换

    公开(公告)号：US5640414A

    公开(公告)日：1997-06-17

    申请号：US226222

    申请日：1994-04-11

    申请人： Robert D. Blakeney, II ,  Gadi Karmi ,  Edward G. Tiedemann, Jr. ,  Lindsay A. Weaver, Jr.

    发明人： Robert D. Blakeney, II ,  Gadi Karmi ,  Edward G. Tiedemann, Jr. ,  Lindsay A. Weaver, Jr.

    IPC分类号： H04W36/18 ,  H04W36/30 ,  H04K1/10

    CPC分类号： H04W36/18 ,  H04W36/30

    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 code phase with respect to other base stations in said system, a method for directing communications between said mobile station user and said base stations. The mobile station monitors the signal strength of pilots and reports the measured signal strength to a system controller via the base station through which it is communicating. Command messages from the system controller to a new base station and the mobiles station establishes communication through the new base station in addition to the communication through the current base station. When the mobile station detects the falling below a predetermined level of the signal strength of a pilot corresponding to at least one of the base stations through which the mobile station is communicating, the mobile station reports the measured signal strength indicative of the corresponding base station to the system controller via the base stations through which it is communicating. Command messages from the system controller to the identified base station and the mobiles station terminates communication through the corresponding base station while communications through the other base station or base stations continue.

    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码相位的公共导频信号 所述系统中的基站，用于指导所述移动站用户与所述基站之间的通信的方法。 移动台监视导频的信号强度，并通过其正在通信的基站将系统控制器的测量信号强度报告给系统控制器。 除了通过当前基站的通信之外，从系统控制器到新基站和移动站的命令消息也建立通过新基站的通信。 当移动站检测到低于与移动台正在通信的至少一个基站相对应的导频的信号强度的预定级别的下降时，移动站将指示相应基站的测量信号强度报告给 系统控制器通过其正在通信的基站。 从系统控制器到所识别的基站和移动站的命令消息通过相应的基站终止通信，同时通过其他基站或基站的通信继续。

    Method and apparatus for providing mobile unit assisted hard handoff from a CDMA communication system to an alternative access communication system
    10.
    发明授权
    Method and apparatus for providing mobile unit assisted hard handoff from a CDMA communication system to an alternative access communication system 失效
    提供从CDMA通信系统到替代的接入通信系统的移动单元辅助硬切换的方法和装置

    公开(公告)号：US5594718A

    公开(公告)日：1997-01-14

    申请号：US413306

    申请日：1995-03-30

    申请人： Lindsay A. Weaver, Jr. ,  Gwain Bayley ,  Edward G. Tiedemann, Jr. ,  Klein S. Gilhousen

    发明人： Lindsay A. Weaver, Jr. ,  Gwain Bayley ,  Edward G. Tiedemann, Jr. ,  Klein S. Gilhousen

    IPC分类号： H04W36/14 ,  H04L27/30

    CPC分类号： H04W36/0066 ,  H04W48/12

    摘要： A method and system for providing a reliable means to perform handoff from a code division multiple access (CDMA) system using a pilot signal to an alternative access communication technique system. Simple pilot box circuitry is added to a set of border base stations. The border base stations are base stations which operate only in the alternative access communication technique and which have coverage areas which are contiguous with coverage areas of CDMA operation base stations. The mobile unit monitors for the pilot signal from the border base stations in the same manner as it monitors for pilot signals from the CDMA operation base stations. When the mobile unit detects the pilot signal corresponding to a border base station, it notifies a system controller in accordance with standard operation. The system controller is aware that the pilot signal corresponds to a border base station and thus triggers a hard handoff process to the alternative access communication technique system in response thereto.

    摘要翻译： 一种用于提供从使用导频信号的码分多址（CDMA）系统到替代的接入通信技术系统执行切换的可靠装置的方法和系统。 简单的导频箱电路被添加到一组边界基站。 边界基站是仅在替代接入通信技术中工作的基站，其具有与CDMA操作基站的覆盖区域相邻的覆盖区域。 移动单元以与监视来自CDMA操作基站的导频信号相同的方式监视来自边界基站的导频信号。 当移动单元检测到与边界基站相对应的导频信号时，它根据标准操作通知系统控制器。 系统控制器知道导频信号对应于边界基站，从而触发对其进行的替代接入通信技术系统的硬切换过程。