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1.发明授权Intra-cell call hand-over in radio communication systems with dynamic channel allocation 失效具有动态通道分配的无线电通信系统中的小区呼叫
公开(公告)号：US5239676A
公开(公告)日：1993-08-24
申请号：US710866
申请日：1991-06-06
CPC分类号： H04W36/06 , H04W24/00 , H04W24/10 , H04W36/08 , H04W36/30 , H04W48/08 , H04W72/02 , H04W72/0413 , H04W72/082
摘要： The intra-cell call hand-over technique of this invention is characterized by the use of channel information from both base station and subscriber terminal in determining a standby radio traffic channel upon which to hand over a call. Communication between the base station and subscriber terminal is carried out on an inband or associated signalling channel for the selection of the standby traffic channel. The standby radio channel is the channel, which, of a set of channels under consideration by the subscriber terminal, contains the least amount of interference as measured at the subscriber terminal. The set of channels under consideration by the subscriber terminal is a subset of the entire set of channels allocated to the service. This subset is comprised of those channels having little interference as measured by the base station. The call hand-over technique thereby assures that calls proceed on channels containing little interference from the viewpoints of both base station and subscriber terminal.
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2.发明授权Call set-up in a radio communication system with dynamic channel allocation 失效在具有动态信道分配的无线电通信系统中的呼叫建立
公开(公告)号：US5345597A
公开(公告)日：1994-09-06
申请号：US40395
申请日：1993-03-30
CPC分类号： H04W72/082 , H04W36/06 , H04W24/00 , H04W24/10 , H04W52/0206 , H04W72/02 , H04W72/0406 , H04W76/02
摘要： The call set-up technique of this invention is characterized by the use of channel information from both base station and subscriber terminal in determining the radio traffic channel upon which to set-up a new call. Communication between the base station and subscriber terminal is carried out on a signalling channel until the traffic channel is chosen. Calls are set-up so that they proceed on the radio channel which, of a set of channels under consideration by the subscriber terminal, contains the least amount of interference as measured at the subscriber terminal. The set of channels under consideration by the subscriber terminal is a subset of the entire set of channels allocated to the service. This subset is comprised of those channels having little interference, as measured by the base station. The call set-up technique thereby assures that calls proceed on channels containing little interference from the viewpoints of both base station and subscriber terminal.
摘要翻译： 本发明的呼叫建立技术的特征在于，在确定建立新呼叫的无线电业务信道时，使用来自基站和用户终端的信道信息。 在信令信道上执行基站与用户终端之间的通信，直到选择了业务信道。 呼叫被建立，使得它们在用户终端考虑的一组信道中包含在用户终端测量的最小干扰量的无线电信道上进行。 用户终端所考虑的一组信道是分配给该业务的整个信道组的子集。 该子集包括由基站测量的具有很小干扰的那些信道。 因此，呼叫建立技术确保来自基站和用户终端的观点的少量干扰的信道的呼叫进行。
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公开(公告)号：US5229995A
公开(公告)日：1993-07-20
申请号：US748740
申请日：1991-08-22
IPC分类号： H04W36/16
CPC分类号： H04W36/16
摘要： An improved radio link architecture for digital wireless communication systems which is characterized by the use of information and signalling channels on a number of RF carriers, thereby providing common signalling channels for call set-up and control functions. A first group of RF carriers are allocated as traffic channels between base stations and subscriber terminals. Each RF carrier in the first group comprises at least one traffic channel. A second group of RF carriers is allocated for providing common signalling channels between the base stations and the subscriber terminals. Each RF carrier having common signalling channels operates in time division multiple access mode, and each common signalling channel being time division duplexed.
摘要翻译： 一种用于数字无线通信系统的改进的无线电链路架构，其特征在于在多个RF载波上使用信息和信令信道，由此提供用于呼叫建立和控制功能的公共信令信道。 第一组RF载波被分配为基站和用户终端之间的业务信道。 第一组中的每个RF载波包括至少一个业务信道。 第二组RF载波被分配用于在基站和用户终端之间提供公共信令信道。 具有公共信令信道的每个RF载波以时分多址方式工作，并且每个公共信令信道被时分双工。
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4.发明授权Apparatus and methods for providing software updates to devices in a communication network 有权用于向通信网络中的设备提供软件更新的装置和方法公开(公告)号：US06378069B1
公开(公告)日：2002-04-23
申请号：US09186349
申请日：1998-11-04
IPC分类号： G06F124
CPC分类号： G06F8/65 , H04M1/72525 , H04W4/14 , H04W8/245 , H04W76/20
摘要： An apparatus for transmitting software to a subscriber device in a communication network, which includes a processor, a database coupled to the processor, and a communication device for providing software to a subscriber device. The database contains information about subscribers of a communication network. A method for transmitting software to subscriber devices in a communication network, comprising identifying a subscriber device which requires a software update, transmitting a first signal from a processor to the subscriber device, initiating a communication channel between the subscriber device and the processor, and transmitting a second signal to the subscriber device. The second signal contains software.
摘要翻译： 一种用于在通信网络中向用户设备发送软件的装置，其包括处理器，耦合到所述处理器的数据库以及用于向订户设备提供软件的通信设备。 数据库包含有关通信网络用户的信息。 一种用于向通信网络中的订户设备发送软件的方法，包括：识别需要软件更新的订户设备，从处理器向订户设备发送第一信号，发起用户设备和处理器之间的通信信道，以及发送 向用户设备发送第二信号。 第二个信号包含软件。
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5.发明授权Time and frequency diveristy in a radio system having intermittent operation receivers 失效具有间歇操作接收机的无线电系统中的时间和频率分歧
公开(公告)号：US5625881A
公开(公告)日：1997-04-29
申请号：US234361
申请日：1994-04-28
CPC分类号： H04B7/12 , H04B7/0604
摘要： The invention provides a means by which a radio system in a multipath propagation environment may improve the probability of successful reception of a message by the application of diversity. It is applicable to such applications as paging, cordless telephones, cellular telephones, and radio identification tags. The transmitter sends the message repeatedly, each repetition transmitted from a different antenna. The antennas are separated so that multipath fading of the signal arriving at the receiver from each transmit antenna is substantially uncorrelated with the multipath fading of the signal arriving at the receiver from the other transmit antennas. The receiver examines the radio channel for an incoming message for a time period long enough for it to potentially receive the message from each antenna. Even if the message sent from one antenna is faded such that it cannot be received successfully at the portable receiver, the likelihood is that the message will be successfully received when it is transmitted from another antenna.
摘要翻译： 本发明提供了一种多径传播环境中的无线电系统可以通过应用分集来提高成功接收消息的可能性的手段。 适用于寻呼，无绳电话，蜂窝电话和无线电识别标签等应用。 发射机重复发送消息，每个重复从不同的天线发送。 天线被分离，使得从每个发射天线到达接收机的信号的多径衰落与从其它发射天线到达接收机的信号的多径衰落基本上不相关。 接收机检查传入消息的无线电信道一段足够长的时间段，以便它可能从每个天线接收消息。 即使从一个天线发送的消息褪色，使得它不能在便携式接收机上成功接收，所以可能的是，当从另一个天线发送时，该消息将被成功接收。
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公开(公告)号：US06249245B1
公开(公告)日：2001-06-19
申请号：US09078325
申请日：1998-05-14
IPC分类号： G01S510
CPC分类号： G01S5/0027 , G01S5/009 , G01S19/41 , G01S2205/008
摘要： Aspects of global positioning system (GPS) technology and cellular technology are combined in order to provide an effective and efficient position location system. In a first aspect of the invention, a cellular network is utilized to collect differential GPS error correction data, which is forwarded to a mobile terminal over the cellular network. The mobile terminal receives this data, along with GPS pseudoranges using a GPS receiver, and calculates its position using this information. According to a second aspect, when the requisite number of GPS satellites are not in view of the mobile terminal, then a GPS pseudosatellite signal, broadcast from a base station of the cellular network, is received by the mobile terminal and processed as a substitute for the missing GPS satellite signal. A third aspect involves calculating position using GPS when the requisite number of GPS satellites are in view of a GPS receiver, but when the requisite number of GPS satellites are not in view of the GPS receiver, then position is calculated using the cellular network infrastructure. When the requisite number of GPS satellites come back into view of the GPS receiver, then position is again calculated using GPS. A fourth aspect involves using cellular signals already being transmitted from base stations to terminals in a cellular network to calculate a round trip delay, from which a distance calculation between the base station and the terminal can be made. This distance calculation substitutes for a missing GPS satellite signal.
摘要翻译： 结合全球定位系统（GPS）技术和蜂窝技术的方面，以提供有效和高效的位置定位系统。 在本发明的第一方面，蜂窝网络用于收集通过蜂窝网络转发到移动终端的差分GPS误差校正数据。 移动终端使用GPS接收机连同GPS伪距接收该数据，并使用该信息来计算其位置。 根据第二方面，当GPS卫星的必需数量不在移动终端时，则由蜂窝网络的基站广播的GPS伪卫星信号被移动终端接收并被处理为 缺少GPS卫星信号。 第三方面涉及当GPS卫星的所需数量是GPS接收机时，使用GPS计算位置，但是当GPS卫星的必要数量不在GPS接收机时，则使用蜂窝网络基础设施来计算位置。 当必要数量的GPS卫星重新看到GPS接收机时，再次使用GPS计算位置。 第四方面涉及使用已经从基站向蜂窝网络中的终端发送的蜂窝信号来计算往返延迟，从而可以进行基站与终端之间的距离计算。 该距离计算代替丢失的GPS卫星信号。
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公开(公告)号：US06236359B1
公开(公告)日：2001-05-22
申请号：US09078444
申请日：1998-05-14
IPC分类号： G01S120
摘要： Aspects of global positioning system (GPS) technology and cellular technology are combined in order to provide an effective and efficient position location system. In a first aspect of the invention, a cellular network is utilized to collect differential GPS error correction data, which is forwarded to a mobile terminal over the cellular network. The mobile terminal receives this data, along with GPS pseudoranges using a GPS receiver, and calculates its position using this information. According to a second aspect, when the requisite number of GPS satellites are not in view of the mobile terminal, then a GPS pseudosatellite signal, broadcast from a base station of the cellular network, is received by the mobile terminal and processed as a substitute for the missing GPS satellite signal. A third aspect involves calculating position using GPS when the requisite number of GPS satellites are in view of a GPS receiver, but when the requisite number of GPS satellites are not in view of the GPS receiver, then position is calculated using the cellular network infrastructure. When the requisite number of GPS satellites come back into view of the GPS receiver, then position is again calculated using GPS. A fourth aspect involves using cellular signals already being transmitted from base stations to terminals in a cellular network to calculate a round trip delay, from which a distance calculation between the base station and the terminal can be made. This distance calculation substitutes for a missing GPS satellite signal.
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8.发明授权
公开(公告)号：US5982324A
公开(公告)日：1999-11-09
申请号：US078558
申请日：1998-05-14
CPC分类号： G01S19/41 , G01S19/11 , G01S19/34 , G01S19/46 , G01S5/009 , G01S2205/008 , H03J2200/11
摘要： Aspects of global positioning system (GPS) technology and cellular technology are combined in order to provide an effective and efficient position location system. In a first aspect of the invention, a cellular network is utilized to collect differential GPS error correction data, which is forwarded to a mobile terminal over the cellular network. The mobile terminal receives this data, along with GPS pseudoranges using a GPS receiver, and calculates its position using this information. According to a second aspect, when the requisite number of GPS satellites are not in view of the mobile terminal, then a GPS pseudosatellite signal, broadcast from a base station of the cellular network, is received by the mobile terminal and processed as a substitute for the missing GPS satellite signal. A third aspect involves calculating position using GPS when the requisite number of GPS satellites are in view of a GPS receiver, but when the requisite number of GPS satellites are not in view of the GPS receiver, then position is calculated using the cellular network infrastructure. When the requisite number of GPS satellites come back into view of the GPS receiver, then position is again calculated using GPS. A fourth aspect involves using cellular signals already being transmitted from base stations to terminals in a cellular network to calculate a round trip delay, from which a distance calculation between the base station and the terminal can be made. This distance calculation substitutes for a missing GPS satellite signal.
摘要翻译： 结合全球定位系统（GPS）技术和蜂窝技术的方面，以提供有效和高效的位置定位系统。 在本发明的第一方面，蜂窝网络用于收集通过蜂窝网络转发到移动终端的差分GPS误差校正数据。 移动终端使用GPS接收机连同GPS伪距接收该数据，并使用该信息来计算其位置。 根据第二方面，当GPS卫星的必需数量不在移动终端时，则由蜂窝网络的基站广播的GPS伪卫星信号被移动终端接收并被处理为 缺少GPS卫星信号。 第三方面涉及当GPS卫星的所需数量是GPS接收机时，使用GPS计算位置，但是当GPS卫星的必要数量不在GPS接收机时，则使用蜂窝网络基础设施来计算位置。 当必要数量的GPS卫星重新看到GPS接收机时，再次使用GPS计算位置。 第四方面涉及使用已经从基站向蜂窝网络中的终端发送的蜂窝信号来计算往返延迟，从而可以进行基站与终端之间的距离计算。 该距离计算代替丢失的GPS卫星信号。
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公开(公告)号：US4920565A
公开(公告)日：1990-04-24
申请号：US220190
申请日：1988-07-18
申请人： Leo Strawczynski , David G. Steer
发明人： Leo Strawczynski , David G. Steer
CPC分类号： H04M3/561 , H04K1/00 , H04M2203/609 , H04M3/568
摘要： The present invention provides a method and apparatus of making secure conference calls in which the bridging unit does not need to know any encryption keys and can function independently of the encryption process used by the communicating parties. This means that there is no security requirement for the conference unit, there are fewer restrictions on where it can be placed, and it does not introduce any additional weaknesses in the security system.
摘要翻译： 本发明提供了一种进行安全会议呼叫的方法和装置，其中桥接单元不需要知道任何加密密钥，并且可以独立于通信方使用的加密过程而起作用。 这意味着会议单元没有安全要求，对于可以放置的位置的限制较少，并且不会在安全系统中引入任何其他缺点。
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10.发明授权公开(公告)号：US07894724B2
公开(公告)日：2011-02-22
申请号：US11094396
申请日：2005-03-31
申请人： Chandra Bontu , Leo Strawczynski
发明人： Chandra Bontu , Leo Strawczynski
IPC分类号： H04B10/00
CPC分类号： H04J14/06 , H04B10/2572
摘要： A method and system for averaging the effects of polarization distortions across a multitude of transmitted data streams in a dual polarization multiplexed optical communications system. Data streams are interleaved amongst each other in accordance with a predetermined pattern. The interleaved data streams are symbol mapped and modulated to provide a pair of optical signals. The pair of optical signals are orthogonally polarized, and multiplexed for transmission across an optical fiber. A receiver circuit receives the transmitted signal and extracts the interleaved data streams. The interleaved data streams are de-interleaved to generate the original data streams. While the data streams can be interleaved and transmitted via a single wavelength optical signal, the data streams can be interleaved and transmitted over two or more different wavelength optical signals to further mitigate the effects of polarization distortions.
摘要翻译： 一种用于在双极化复用光通信系统中对多个传输数据流之间的偏振失真的影响进行平均的方法和系统。 数据流根据预定模式彼此交错。 交织的数据流被符号映射和调制以提供一对光信号。 这对光信号被正交极化，并被多路复用以在光纤之间传输。 接收机电路接收发送的信号并提取交织的数据流。 交织的数据流被解交织以产生原始数据流。 虽然数据流可以通过单波长光信号进行交织和传输，但数据流可以通过两个或多个不同波长的光信号进行交织和传输，以进一步减轻极化失真的影响。
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