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1. 发明授权

US06266536B1 System and method for dynamic overlap compensation in a simulcast network 失效
标题翻译：同步网络中动态重叠补偿的系统和方法
公开(公告)号：US06266536B1
公开(公告)日：2001-07-24
申请号：US09303914
申请日：1999-05-03
申请人： William O. Janky
发明人： William O. Janky
IPC分类号： H04B701
CPC分类号： H04H20/67 , H04B7/2625
摘要： A telecommunications system and method is disclosed for deliberately producing synchronous timing jitters in order to dynamically shift the delay spread within the overlap zone in a simulcast system. At a synchronous periodic rate, the timing differential between transmission of the signal from the control point to each of the transmitters can be continuously adjusted to continuously change the relative timing between multiple received signals in the overlap zone. Alternatively, the timing adjustments can be performed only upon reception of a retransmission request. In either case, the timing adjustments are performed so as to not be noticed by the mobile subscriber.
摘要翻译：公开了电信系统和方法，用于故意产生同步定时抖动，以便在联播系统中动态地移动重叠区域内的延迟扩展。以同步周期速率，可以连续地调整从控制点发送到每个发射机的信号之间的定时差分，以连续地改变重叠区域中的多个接收信号之间的相对定时。或者，只有在接收到重传请求时才能执行定时调整。在这两种情况下，执行定时调整以便移动用户不会注意。

2. 发明授权

US06236862B1 Continuously adaptive dynamic signal separation and recovery system 失效
标题翻译：连续自适应动态信号分离和恢复系统
公开(公告)号：US06236862B1
公开(公告)日：2001-05-22
申请号：US08990682
申请日：1997-12-15
申请人： Gamze Erten , Faihi M. Salam
发明人： Gamze Erten , Faihi M. Salam
IPC分类号： H04B701
CPC分类号： H04W16/14 , G01S3/00 , G01S7/00 , G01S7/52023 , G01S13/006 , H01Q3/2605 , H04B1/123
摘要： A method and apparatus for dynamically separating and recovering original signal sources by processing a set of mixed received mixtures and convolution of said signals utilizing differential equations and a computer. The system of the invention enables the blind separation and recovery of an unknown number of signals mixed together in dynamically changing interference environments with very minimal assumption on the original signals. The system of this invention has practical applications to nonmultiplexed media sharing, adaptive interferer rejection, acoustic sensors, acoustic diagnostics, medical diagnostics and instrumentation, speech, voice, language recognition and processing, wired and wireless modulated communication signal receivers, and cellular communications.
摘要翻译：一种用于通过处理一组混合的接收混合物并利用微分方程和计算机卷积所述信号来动态地分离和恢复原始信号源的方法和装置。本发明的系统使得在动态变化的干扰环境中混合在一起的未知数量的信号在原始信号上具有非常小的假设。本发明的系统具有非复用媒体共享，自适应干扰抑制，声传感器，声学诊断，医学诊断和仪器，语音，语音，语言识别和处理，有线和无线调制通信信号接收机以及蜂窝通信的实际应用。

3. 发明授权

US06549784B1 Method and apparatus for implementing measurement based dynamic frequency hopping in wireless communication systems 有权
标题翻译：用于在无线通信系统中实现基于测量的动态跳频的方法和装置
公开(公告)号：US06549784B1
公开(公告)日：2003-04-15
申请号：US09312279
申请日：1999-05-14
申请人： Zoran Kostic , Nelson Ray Sollenberger
发明人： Zoran Kostic , Nelson Ray Sollenberger
IPC分类号： H04B701
CPC分类号： H04B1/715 , H04B2001/7154 , H04L5/023
摘要： Proposed is a method and apparatus for reducing interference in a frequency hopping wireless communications system. In one embodiment of the present invention, a base station and a terminal station each using an orthogonal frequency division multiplexing (OFDM) technique to simultaneously measure an interference level for each system frequency and to enable high speed frequency hop pattern changes which can follow changes in desired and interfering signal levels due to changes in co-channel interference or shadow fading. The terminal station interference level measurement values are then transmitted to the base station. Next, the base station identifies each frequency hop pattern currently in use by each terminal station communicating with that base station. The base station then uses both the base station interference level measurements and the terminal station interference level measurements to identify each frequency hop pattern in which at least one of the current system frequencies should be replaced with a system frequency having a lower interference level. Next, the base station replaces no more than a predetermined number of the current system frequencies within the identified frequency hop pattern(s). The above steps are executed at each base station within the system while ensuring that nearby interfering base stations do not replace frequencies at the same time.
摘要翻译：提出了一种用于减少跳频无线通信系统中的干扰的方法和装置。在本发明的一个实施例中，一个基站和一个终端站，每个基站和终端站都使用正交频分复用（OFDM）技术来同时测量每个系统频率的干扰电平，并实现能够跟随变化的高速跳频模式改变由于同频道干扰或阴影衰落的变化而导致的期望和干扰信号电平。然后将终端干扰电平测量值发送到基站。接下来，基站识别与该基站通信的每个终端当前正在使用的每个频率跳频模式。基站然后使用基站干扰电平测量和终端干扰电平测量两者来识别其中至少一个当前系统频率应被具有较低干扰电平的系统频率替代的每个频率跳频模式。接下来，基站在所识别的频率跳频模式中替换不超过预定数量的当前系统频率。上述步骤在系统内的每个基站执行，同时确保附近的干扰基站不同时替换频率。

4. 发明授权

US06272350B1 Method for improved line of sight signal detection using time/frequency analysis 失效
标题翻译：使用时间/频率分析改进视线信号检测的方法
公开(公告)号：US06272350B1
公开(公告)日：2001-08-07
申请号：US08984728
申请日：1997-12-04
申请人： Sirin Tekinay
发明人： Sirin Tekinay
IPC分类号： H04B701
CPC分类号： H04B7/01
摘要： The time-of-arrival of the line-of-sight component of a received, or incoming, signal is determined by performing a time/frequency analysis of the incoming signal. The term time/frequency analysis refers to an analysis of the frequency components (i.e. the frequency make-up) of the incoming signal at given instants in time. For example, one form of time/frequency analysis according to the present invention is to compare the frequency make-up of the received signal to the frequency make-up of the transmitted signal. Those points in time in which the frequency make-up of the received signal matches the frequency make-up of the transmitted signal are the instants in time at which a multipath component of the transmitted signal is received. In such a time/frequency analysis, the first-identified component, in time, is assumed to be the line-of-sight component of the transmitted signal.
摘要翻译：通过执行输入信号的时间/频率分析来确定接收到或进入的信号的视线分量的到达时间。术语时间/频率分析是指对给定时刻的输入信号的频率分量（即频率补偿）的分析。例如，根据本发明的一种形式的时间/频率分析是将接收信号的频率组合与发射信号的频率组合进行比较。接收信号的频率构成与发送信号的频率组合匹配的那些时间点是接收发送信号的多径分量的时刻。在这样的时间/频率分析中，第一识别的分量在时间上被假设为发射信号的视线分量。

5. 发明授权

US06516199B1 Reducing interference in telecommunications systems 失效
标题翻译：减少对电信系统的干扰
公开(公告)号：US06516199B1
公开(公告)日：2003-02-04
申请号：US08996478
申请日：1997-12-22
申请人： Jan Erik Söderkvist , Lars Peter Wahlström
发明人： Jan Erik Söderkvist , Lars Peter Wahlström
IPC分类号： H04B701
CPC分类号： H04B7/2693 , H04J3/0605
摘要： A cellular network is controlled such that time slots of transmissions from base stations with the same operating frequency are synchronized. Moreover, adjacent base stations using the same frequency are controlled such that, at any given time, they are transmitting different sync words.
摘要翻译：控制蜂窝网络，使得具有相同工作频率的基站的传输时隙同步。此外，使用相同频率的相邻基站被控制，使得在任何给定时间，它们正在发送不同的同步字。

6. 发明授权

US06178334B1 Cellular/PCS network with distributed-RF base station 有权
标题翻译：具有分布式射频基站的蜂窝/ PCS网络
公开(公告)号：US06178334B1
公开(公告)日：2001-01-23
申请号：US09193632
申请日：1998-11-17
申请人： Dong-Jye Shyy , Cathy Zatloukal , Khalid Karimullah
发明人： Dong-Jye Shyy , Cathy Zatloukal , Khalid Karimullah
IPC分类号： H04B701
CPC分类号： H04W88/085 , H04B7/2609 , H04B17/27
摘要： This disclosure relates to a communications network including a base station and two or more distributed cells which are remote from the base station. The cells are coupled to the base station by transmission mediums which may, for example, be cable, fiber, and/or air. Between the base station and each cell, there is a time delay or transmission time, between the time when a communication that is received at one of the two is transmitted to and is received by the other of the two. The time delays of the two cells are unique or distinct one from the other. The network includes a time responsive system which is responsive to the time delay for a communication between the base station and one of the cells. Since the time delays are distinctive, the time responsive system identifies the cell associated with the communication. The time delays of the cells may be inherent in the circuitry and transmission mediums between the base station and the cells. A time delay element also may be provided to modify the time delay of one or more of the cells, if the inherent time delays are not sufficiently distinct.
摘要翻译：本公开涉及包括基站和远离基站的两个或多个分布式小区的通信网络。这些小区通过传输介质耦合到基站，传输介质可以是例如电缆，光纤和/或空气。在基站和每个小区之间存在时间延迟或传输时间，其中在两者之一处接收的通信被发送到两者之一并由另一个接收。两个单元格的时间延迟是独一无二的。网络包括响应于基站与其中一个小区之间的通信的时间延迟的时间响应系统。由于时间延迟是独特的，因此时间响应系统识别与通信相关联的单元。小区的时间延迟在基站和小区之间的电路和传输介质中可能是固有的。如果固有的时间延迟没有足够的不同，也可以提供时间延迟元件来修改一个或多个单元的时间延迟。

7. 发明授权

US06542754B1 Synchronizing clock signals in wireless networks 有权
标题翻译：在无线网络中同步时钟信号
公开(公告)号：US06542754B1
公开(公告)日：2003-04-01
申请号：US09310566
申请日：1999-05-12
申请人： Ian Leslie Sayers , Paul Jan Long , Peter Kendall Cripps
发明人： Ian Leslie Sayers , Paul Jan Long , Peter Kendall Cripps
IPC分类号： H04B701
CPC分类号： H04B7/269 , H04B7/2693 , H04W56/0015 , H04W56/0035
摘要： A communications system extends over a cellular region formed of a plurality of wireless cells where each cell covers a portion of the cellular region. Each cell has a base station clock unit that facilitates reliable and accurate synchronization with other clocks units in other cells using a master clock signal from a global positioning system (GPS) or other accurate frequency source. The clock unit in each cell includes a local clock providing a local clock signal for clocking the cell. A master clock source provides one or more master clock signals and a clock synchronizer receives the master clock signals and forms a synchronizing master clock signal for synchronizing the local clock signal. In one or more of the wireless cells of the communication system, the clock unit is a master clock unit which includes a clock distributor for distributing a distributed master clock signal to one or more other wireless cells having slave clock units.
摘要翻译：通信系统在由多个无线小区形成的蜂窝区域上延伸，其中每个小区覆盖蜂窝区域的一部分。每个单元具有基站时钟单元，其使用来自全球定位系统（GPS）或其他精确频率源的主时钟信号来促进与其他单元中的其它时钟单元的可靠和准确的同步。每个单元中的时钟单元包括本地时钟，提供用于对单元进行时钟的本地时钟信号。主时钟源提供一个或多个主时钟信号，并且时钟同步器接收主时钟信号并且形成用于同步本地时钟信号的同步主时钟信号。在通信系统的一个或多个无线小区中，时钟单元是主时钟单元，其包括用于将分布式主时钟信号分配给具有从时钟单元的一个或多个其他无线小区的时钟分配器。

8. 发明授权

US06351649B1 Mobile communication system 有权
标题翻译：移动通信系统
公开(公告)号：US06351649B1
公开(公告)日：2002-02-26
申请号：US09276660
申请日：1999-03-26
申请人： Fumio Watanabe , Yoshio Takeuchi , Toshinori Suzuki , Hisato Iwai , Akira Yamaguchi
发明人： Fumio Watanabe , Yoshio Takeuchi , Toshinori Suzuki , Hisato Iwai , Akira Yamaguchi
IPC分类号： H04B701
CPC分类号： H04W52/242 , H04B17/318 , H04B17/345 , H04W16/14 , H04W52/146 , H04W88/06
摘要： A mobile communication system includes a first and second systems. Each of the first and second systems has a land station and at least one mobile terminal capable of communicating with the land station. The land station of the first system has a broadcasting channel transmission unit for transmitting status information via a broadcasting channel, and the mobile terminal of the second system has a broadcasting channel receiving unit for receiving information in the broadcasting channel to obtain a broadcasting channel receiving condition and the status information, a giving interference estimation unit for estimating giving interference level onto communication of the first system by the second system based upon the obtained broadcasting channel receiving condition and the obtained status information, and an output signal level control unit for controlling output signal level of the mobile terminal of the second system based upon the estimated giving interference level.
摘要翻译：移动通信系统包括第一和第二系统。第一和第二系统中的每一个具有陆地站和能够与地面站通信的至少一个移动终端。第一系统的地面站具有用于经由广播信道发送状态信息的广播频道传输单元，并且第二系统的移动终端具有广播频道接收单元，用于在广播频道中接收信息以获得广播频道接收条件状态信息，基于所获得的广播信道接收条件和所获得的状态信息，估计由第二系统对第一系统的通信给出干扰电平的给出干扰估计单元，以及用于控制输出信号的输出信号电平控制单元基于所估计的给定干扰电平，第二系统的移动终端的电平。

9. 发明授权

US06349214B1 Synchronization of broadcast facilities via satellite 失效
标题翻译：通过卫星同步广播设施
公开(公告)号：US06349214B1
公开(公告)日：2002-02-19
申请号：US09316036
申请日：1999-05-21
申请人： Warren L. Braun
发明人： Warren L. Braun
IPC分类号： H04B701
CPC分类号： H04B7/18523
摘要： Interference effects between television transmitters for amplitude modulated or digital video and operating on a common allocated channel or frequency is avoided while discrimination is improved by synchronizing carrier signals for a plurality of transmitters. Booster transmitters for correcting coverage anomalies can operate of the same channel or frequency rather than requiring a different channel or frequency presently required in translators; making all allocable channels available for diverse broadcast programming. Discrimination between transmitters operating on the same channel or frequency but with potentially differing programming can be achieved with directional antennas. Synchronization of carrier signals is achieved by frequency multiplication of a tone relayed over a satellite transmission channel by an integral power of two using one or more serially connected full-wave rectifier stages and tuned filters.
摘要翻译：在通过同步用于多个发射机的载波信号来改善鉴别的同时，避免了用于幅度调制或数字视频并在公共分配的信道或频率上工作的电视发射机之间的干扰效应。用于校正覆盖异常的增强发射机可以操作相同的信道或频率，而不需要翻译器当前需要的不同信道或频率; 使所有可分配的频道可用于各种广播节目。使用定向天线可以实现在相同信道或频率上工作但具有潜在不同编程的发射机之间的鉴别。载波信号的同步通过使用一个或多个串联全波整流器级和调谐滤波器通过卫星传输信道中继的音调乘以2的积分功率来实现。

10. 发明授权

US06804528B1 Apparatus and method for use in the multicast of traffic data in wireless multiple access communications systems 有权
标题翻译：用于无线多址通信系统中的业务数据组播中的装置和方法
公开(公告)号：US06804528B1
公开(公告)日：2004-10-12
申请号：US09706534
申请日：2000-11-03
申请人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
发明人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
IPC分类号： H04B701
CPC分类号： H04L12/189 , H04W68/00 , H04W72/005
摘要： In a wireless communications system, multicast messages are transported to groups of wireless terminals by employing a common control channel to transmit a multicast paging message indicating that multicast traffic data is to be transmitted to a particular group of wireless terminals. In an embodiment of the invention, the essential information transmitted in the common control channel is the identifier of the group of wireless terminals intended to receive the multicast traffic data and the location of a traffic channel on which the multicast traffic is to be transported in a channel resource which may include a representation of bandwidth and time interval. In accordance with an aspect of the invention, the common control channel is associated with a traffic channel in a prescribed fixed manner. Further, the traffic channel used for the purpose of multicast can be the same traffic channel used for the normal point-to-point transmission of traffic data.
摘要翻译：在无线通信系统中，通过采用公共控制信道将组播消息传送到无线终端组，以将表示组播业务数据要传送到特定无线终端组的组播寻呼消息。在本发明的一个实施例中，在公共控制信道中发送的基本信息是旨在接收多播业务数据的无线终端组的标识符以及要在其中传输组播业务的业务信道的位置信道资源，其可以包括带宽和时间间隔的表示。根据本发明的一个方面，公共控制信道以规定的固定方式与业务信道相关联。此外，用于组播目的的业务信道可以是用于业务数据的正常点对点传输的相同业务信道。

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