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1.发明授权Synchronization method, and associated circuitry, for synchronizing a receiver with a transmitter 失效同步方法和相关电路，用于使接收机与发射机同步
公开(公告)号：US5883929A
公开(公告)日：1999-03-16
申请号：US626807
申请日：1996-04-03
CPC分类号： H04L7/046 , H04J3/0608
摘要： A synchronization method and apparatus for synchronizing a receiver, such as a radiotelephone operable in a cellular communication system with a transmitter. Synchronization sequences are transmitted as parts of a control signal to the receiver. The synchronization sequences are formed of either a dotting sequence or a set of m-sequences. Such synchronization sequences are of high margins and also permit synchronization of the user terminal responsive to a reduced number of calculations.
摘要翻译： 一种用于使诸如在蜂窝通信系统中可操作的无线电话机的接收机与发射机同步的同步方法和装置。 同步序列作为控制信号的一部分被发送到接收机。 同步序列由点序列或一组m序列组成。 这样的同步序列具有高边距并且还允许响应于减少的计算数量来同步用户终端。
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公开(公告)号：US06314081B1
公开(公告)日：2001-11-06
申请号：US08588507
申请日：1996-01-18
IPC分类号： H04J1100
CPC分类号： H04W4/14 , H04B7/18567
摘要： A communication system and method for transmitting relatively short data messages in the communication system. A dedicated frequency is sequentially switched into each of a plurality of satellite beams or traffic channels to transmit data messages at an increased power level to provide an increased signal margin. The increased power level of the dedicated frequency can be combined with coding and bit and message repetition to further increase the signal margin.
摘要翻译： 一种用于在通信系统中发送相对短的数据消息的通信系统和方法。 专用频率被顺序地切换到多个卫星波束或业务信道中的每一个以在增加的功率电平上发送数据消息以提供增加的信号余量。 专用频率的增加的功率电平可以与编码和比特和消息重复组合以进一步增加信号余量。
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公开(公告)号：US5652750A
公开(公告)日：1997-07-29
申请号：US519943
申请日：1995-08-28
申请人： Paul W. Dent , Amer A. Hassan
发明人： Paul W. Dent , Amer A. Hassan
CPC分类号： H04B10/118 , H04B10/807 , H04B7/18532
摘要： A cellular communications satellite system is disclosed which comprises a plurality of ground-based base stations, mobile stations, and at least one orbiting satellite for relaying signals between the base stations and mobile stations. A Plurality of feederlinks are used between the base stations and the satellite for transmitting signals and power from the ground stations to the satellite.
摘要翻译： 公开了一种蜂窝通信卫星系统，其包括多个基于地面的基站，移动站和用于在基站和移动站之间中继信号的至少一个轨道卫星。 在基站和卫星之间使用多个馈线链路，用于从地面站向卫星发送信号和电力。
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4.发明授权High power short message service using TDMA frames and/or broadcast control channel 有权使用TDMA帧和/或广播控制信道的大功率短消息业务公开(公告)号：US06414945B1
公开(公告)日：2002-07-02
申请号：US09166793
申请日：1998-10-06
IPC分类号： H04B7212
摘要： A method and system for transmitting short data messages in a control station-based TDMA radiocommunication system. Selected TDMA frames are assigned as message frames, and one or more data slots from each message frame are assigned to transmitter/receivers. Data messages can be encoded and transmitted multiple times, at an increased power level, from a control station to a transmitter/receiver over the appropriate data slots in each message frame. The selected TDMA frames are preferably slow associated control channel frames. Also, short alphanumeric messages can be transmitted over the broadcast control channel of a digital radiocommunication link, or another communication channel consisting of one or more slots from successive frames in a TDMA communication link. An increase in transmission power is used in combination with repetition to increase effective signal margin without complications in the mobile unit design, significant delay, or co-channel interference. Where a more significant increase in signal margin is desired, when a longer message is required, or for voice messages, the message may be stored and the mobile unit alerted of the message.
摘要翻译： 一种用于在基于控制站的TDMA无线电通信系统中发送短数据消息的方法和系统。 所选TDMA帧被分配为消息帧，并且来自每个消息帧的一个或多个数据时隙被分配给发射机/接收机。 在每个消息帧中的数据消息可以通过适当的数据时隙从控制站到发射机/接收机以增加的功率电平被多次编码和传输。 选择的TDMA帧优选地是慢关联的控制信道帧。 此外，可以通过数字无线电通信链路的广播控制信道或由TDMA通信链路中的连续帧的一个或多个时隙组成的另一个通信信道来传送短的字母数字消息。 传输功率的增加与重复结合使用以增加有效信号容限，而不会在移动单元设计，显着的延迟或同信道干扰中出现并发症。 在需要更大幅度地增加信号余量的情况下，当需要更长的消息或者对于语音消息时，可以存储消息并且移动单元提醒消息。
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公开(公告)号：US6046990A
公开(公告)日：2000-04-04
申请号：US559692
申请日：1995-11-15
CPC分类号： H04L1/08 , H04B7/18567 , H04W68/00 , H04W68/02 , H04W88/185
摘要： A method and system for increasing the signal margin of a radiocommunication link to provide a short message service which is reliable, even under non-ideal conditions. According to the method, an increase in transmission power is used in combination with bit repetition to increase signal margin without complications in the mobile unit design, significant delay, or co-channel interference. Where a more significant increase in signal margin is desired, when a longer message is required, or for voice messages, the message may be stored and the mobile unit alerted of the message.
摘要翻译： 一种用于增加无线电通信链路的信号余量以提供即使在非理想条件下也是可靠的短消息服务的方法和系统。 根据该方法，与比特重复结合使用传输功率的增加以增加信号容限，而不会在移动单元设计，显着的延迟或同信道干扰中出现并发症。 在需要更大幅度地增加信号余量的情况下，当需要更长的消息或者对于语音消息时，可以存储消息并且移动单元提醒消息。
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公开(公告)号：US5822310A
公开(公告)日：1998-10-13
申请号：US579015
申请日：1995-12-27
CPC分类号： H04L1/08 , H04B7/18567
摘要： A method and system for increasing the signal margin of a radiocommunication link to provide a short message service which is reliable, even under non-ideal conditions. According to the method, short alphanumeric messages can be transmitted over the broadcast control channel of a digital radiocommunication link, or another communication channel consisting of one or more slots from successive frames in a TDMA communication link. An increase in transmission power is used in combination with repetition to increase effective signal margin without complications in the mobile unit design, significant delay, or co-channel interference. Where a more significant increase in signal margin is desired, when a longer message is required, or for voice messages, the message may be stored and the mobile unit alerted of the message.
摘要翻译： 一种用于增加无线电通信链路的信号余量以提供即使在非理想条件下也是可靠的短消息服务的方法和系统。 根据该方法，可以通过数字无线电通信链路的广播控制信道或由TDMA通信链路中的连续帧的一个或多个时隙组成的另一通信信道来传送短的字母数字消息。 传输功率的增加与重复结合使用以增加有效信号容限，而不会在移动单元设计，显着的延迟或同信道干扰中出现并发症。 在需要更大幅度地增加信号余量的情况下，当需要更长的消息或者对于语音消息时，可以存储消息并且移动单元提醒消息。
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7.发明授权Methods and apparatus for mobile station to mobile station communications in a mobile satellite communication system 失效移动台在移动卫星通信系统中的移动台通信的方法和装置
公开(公告)号：US5943324A
公开(公告)日：1999-08-24
申请号：US59045
申请日：1998-04-13
CPC分类号： H04B7/18558
摘要： Methods and apparatus for mobile station to mobile station communications in a mobile satellite communications system include an asymmetrical TDMA formatting scheme. According to exemplary embodiments, a first mobile station broadcasts a first signal to an orbiting satellite using a first TDMA format. The satellite receives the first signal, maps the first TDMA format to a second TDMA format and broadcasts a second signal having the second TDMA format to a second mobile station. Advantageously, exemplary embodiments utilize an elastic buffer to allow the satellite to map the uplink TDMA format to the downlink TDMA format without having to demodulate and re-modulate communications signals.
摘要翻译： 在移动卫星通信系统中移动台到移动台通信的方法和装置包括不对称的TDMA格式化方案。 根据示例性实施例，第一移动台使用第一TDMA格式将第一信号广播到轨道卫星。 卫星接收第一信号，将第一TDMA格式映射到第二TDMA格式，并将具有第二TDMA格式的第二信号广播给第二移动台。 有利地，示例性实施例利用弹性缓冲器来允许卫星将上行链路TDMA格式映射到下行链路TDMA格式，而不必解调和重新调制通信信号。
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8.发明授权Method and apparatus for enabling mobile-to-mobile calls in a communication system 失效用于在通信系统中实现移动电话到移动电话的方法和装置
公开(公告)号：US5809141A
公开(公告)日：1998-09-15
申请号：US681916
申请日：1996-07-30
CPC分类号： H04B7/18532 , H04B7/18558 , H04B7/18565
摘要： A communication system is disclosed which reduces loop delay when a first wireless phone calls a second wireless phone wherein the first and second phones are served by the same relay station. The communication system includes a relay station for communicating with the first and second wireless phones. A transponder located in the relay station relays signals received from one mobile station on a first frequency band to another mobile station on a second frequency band. In addition, the transponder sends the received signals to a controller which controls the operation of the transponder using control information.
摘要翻译： 公开了一种通信系统，其在第一无线电话呼叫第二无线电话时减少环路延迟，其中第一和第二电话由相同的中继站服务。 通信系统包括用于与第一和第二无线电话进行通信的中继站。 位于中继站的应答器将在第一频带上从一个移动台接收的信号中继到第二频带上的另一个移动台。 此外，应答器将接收的信号发送到使用控制信息控制应答器的操作的控制器。
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公开(公告)号：US09559768B2
公开(公告)日：2017-01-31
申请号：US12034283
申请日：2008-02-20
申请人： Paul W. Dent
发明人： Paul W. Dent
IPC分类号： H04B7/185
CPC分类号： H04B7/18526
摘要： A satellite broadcasts radio programs to mobile and fixed receivers at various locations. Ground stations supplement the satellite broadcasts in areas where the satellite signal may be shadowed. Likewise, the satellite signal supplements the terrestrial transmissions in areas with marginal terrestrial signal strength. Ground stations and a satellite transmit the same digital symbol stream over a same frequency spectrum. The symbol streams arrive in each service area of the ground stations with a relative delay that is within a window for which a receiver is adapted to decode efficiently. Spectral efficiency is achieved by allowing the ground stations to share the same frequencies as the satellites.
摘要翻译： 卫星向各种地点的移动和固定接收机广播无线电节目。 地面站补充卫星信号可能被遮蔽的地区的卫星广播。 同样，卫星信号补充地面信号强度较低的地区的地面传输。 地面站和卫星在同一频谱上发送相同的数字符号流。 符号流在地面站的每个服务区域中到达接收机适于对其进行有效解码的相对延迟。 通过允许地面站与卫星共享相同的频率来实现光谱效率。
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10.发明授权Method and apparatus for communicating with root-nyquist, self-transform pulse shapes 有权与根蒂姆，自变形脉冲形状通信的方法和装置公开(公告)号：US08259845B2
公开(公告)日：2012-09-04
申请号：US12126576
申请日：2008-05-23
申请人： Paul W. Dent
发明人： Paul W. Dent
IPC分类号： H04L25/03
CPC分类号： H04L25/03834 , H04L25/03821 , H04L25/0384 , H04L25/03859 , H04L27/2626 , H04L27/2647
摘要： A communication system (20) comprises a transmitter (22) and a receiver (24). The transmitter (22) comprises a source of information symbols (30); a pulse shaping wave function generator (32); and a combiner (34) configured to express the information symbols received from the source as signals which are shaped in time and frequency domains by the wave function. The pulse shaping wave function generator (32) is configured to provide a wave function which has the Nyquist property and has a same shape as its own Fourier transform. The combiner (34) is configured to combine the wave function with a stream of digital data symbols to produce a filtered stream for transmission by the transmitter.
摘要翻译： 通信系统（20）包括发射机（22）和接收机（24）。 发射机（22）包括信息符号源（30）; 脉冲整形波函数发生器（32）; 以及组合器（34），被配置为将从源接收的信息符号表示为通过波函数在时域和频域中成形的信号。 脉冲整形波函数发生器（32）被配置为提供具有奈奎斯特性质并且具有与其自身傅里叶变换相同形状的波函数。 组合器（34）被配置为将波函数与数字数据符号流组合以产生经过滤波以供发射机传输。
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