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公开(公告)号：US06108364A
公开(公告)日：2000-08-22
申请号：US522469
申请日：1995-08-31
IPC分类号： H04L5/16 , H04B7/005 , H04B7/15 , H04B7/26 , H04J3/08 , H04W16/26 , H04W52/40 , H04W52/46 , H04B15/00
CPC分类号： H04W52/46 , H04B7/15535 , H04B7/2606 , H04B7/2618 , H04W16/26 , H04W52/40
摘要： A method and apparatus for time division duplex (TDD) repeating a spread spectrum signal, where spread spectrum signal is comprised of a series of code symbol modulated with a pseudonoise (PN) sequence. The TDD repeater receives intermittently the spread spectrum signal at a location remote from a source supplying the spread spectrum signal. The TDD repeater amplifies and delays the received spread spectrum signal by a predetermined amount. The TDD repeater transmits intermittently the delayed amplified received spread spectrum signal such that the TDD is not receiving the spread spectrum signal when it is transmitting the signal energy.
摘要翻译： 一种用于重复扩频信号的时分双工（TDD）的方法和装置，其中扩频信号由用伪噪声（PN）序列调制的一系列码元组成。 TDD中继器在远离提供扩频信号的源的位置处间歇地接收扩频信号。 TDD中继器将接收的扩频信号放大并延迟预定量。 TDD中继器间歇地发送延迟的放大的接收扩频信号，使得TDD在发送信号能量时没有接收扩频信号。
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公开(公告)号：US5142278A
公开(公告)日：1992-08-25
申请号：US620133
申请日：1990-11-30
CPC分类号： B61L15/0036 , B61L15/0072 , G08G1/127
摘要： An apparatus and method for providing communication of information between a truck tractor and trailer via existing truck wiring. At least one transmitter is located in each trailer for generating a unique identification signal representative of trailer identification information corresponding to the trailer in which the transmitter is located, modulating the identification signal, and providing the modulated identification on an existing truck power bus coupling the tractor and trailer. A receiver is located in the tractor for receiving each modulated identification signal on the power bus, demodulating each modulated identification signal and providing each demodulated identification signal to a mobile communications terminal located in the tractor for transmission to a central facility. The system may further include the transmission of trailer status or load status information by the transmitter to the receiver in a similar manner as the identification information.
摘要翻译： 一种用于通过现有卡车配线提供卡车拖拉机和拖车之间的信息通信的装置和方法。 至少一个发射器位于每个拖车中，用于产生代表对应于发射机所在的预告片的拖车识别信息的唯一标识信号，调制识别信号，以及将耦合拖拉机的现有卡车电力总线上的调制标识提供 和拖车。 接收机位于拖拉机中，用于接收电力总线上的每个调制的识别信号，解调每个调制的识别信号，并将每个解调的识别信号提供给位于拖拉机中的移动通信终端，以便传输到中央设施。 该系统可以进一步包括发射机以与识别信息相似的方式向接收机发送拖车状态或负载状态信息。
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公开(公告)号：US4979170A
公开(公告)日：1990-12-18
申请号：US145176
申请日：1988-01-19
IPC分类号： G02B6/293 , G02B6/34 , G02B6/42 , H01S3/08 , H01S5/14 , H01S5/40 , H04B1/7136 , H04B7/212 , H04B10/155 , H04L5/16
CPC分类号： H04B1/7136 , G02B6/12007 , G02B6/2931 , G02B6/29328 , G02B6/29383 , G02B6/4206 , G02B6/4246 , G02B6/4249 , G02B6/425 , H01S3/08009 , H01S5/141 , H04B10/506 , H04B7/212 , H04L5/16 , G02B6/29334 , H01S5/4025 , H01S5/4062 , H01S5/4087
摘要： A message communication system employing one or more centralized communication stations transferring messages through Earth orbit repeater satellites to or from mobile terminals with at least one central communication station having a first transceiver for transmitting a first communication signal to one or more mobile terminals and at least one mobile terminal having a second transceiver for receiving the first communication signal and demodulating it, and for transmitting at a predetermined duty cycle of the second transceiver, a second communication signal to at least one of the central communication stations. The preferred duty cycle over which the second communication signal is transmitted is about fifty percent of the second transceiver duty cycle. The communication system uses Time Division Multiplexed (TDM) communication signals using a number of channels as designated address channels with the remainder being used for data transfer. Information transmitted on the address channels is used by terminals to determine both the presence of a message and its corresponding data transmission or reception channel. In addition the terminals use the reception of the first communication signal to adjust return link transmission frequency to compensate for transmission path errors. The alternating duty cycle allows mobile terminals to use a single set of local oscillators for both transmission and reception modes of operation. To decrease interference with other systems the present system employs a power dispersal modulation function to achieve the footprint of a video signal for high transfer rate digital communication signals.
摘要翻译： 一种消息通信系统，其采用一个或多个集中式通信站，其中至少一个中央通信站通过地球轨道中继卫星向移动终端传送消息，所述至少一个中央通信站具有用于将第一通信信号发送到一个或多个移动终端的第一收发器和至少一个 移动终端具有用于接收第一通信信号并对其进行解调的第二收发器，并且用于以第二收发器的预定占空比发送第二通信信号到至少一个中央通信站。 发送第二通信信号的优选占空比大约是第二收发器占空比的百分之五十。 通信系统使用时分复用（TDM）通信信号，使用多个信道作为指定地址信道，其余部分用于数据传输。 在地址信道上发送的信息被终端用于确定消息的存在及其对应的数据发送或接收信道。 此外，终端使用第一通信信号的接收来调整返回链路传输频率以补偿传输路径错误。 交替占空比允许移动终端在传输和接收操作模式下使用单组本地振荡器。 为了减少与其他系统的干扰，本系统采用功率分散调制功能来实现高传输速率数字通信信号的视频信号的覆盖区。
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4.发明授权Method and apparatus for integration of a wireless communication system with a cable television system 失效用于将无线通信系统与有线电视系统集成的方法和装置
公开(公告)号：US5839052A
公开(公告)日：1998-11-17
申请号：US600103
申请日：1996-02-08
IPC分类号： H04N7/173
CPC分类号： H04L12/2801 , H04B3/54 , H04W52/325 , H04B2203/5441 , H04B2203/5487 , H04N7/10 , H04W36/18 , H04W52/146
摘要： The present invention is a method and apparatus for integrating a personal communication system with a cable television plant. A set of radio antenna devices (RAD) are connected to the cable plant. The RADs provide frequency conversion and power control of signal received from the cable plant for wireless transmission to the remote units. The RADs also provide power control and frequency conversion of wireless signals received from the remote units for transmission by the RADs onto the cable plant. In addition to the functions of standard base stations and centralized controller, the CATV base station must also compensate for gain variations in the cable plant. The downstream power control is regulated by a RAD reference signal which can be hidden within the CDMA signal for maximum efficiency. The upstream power control is regulated by an upstream gain reference signal which is individually transmitted by each RAD on the upstream link.
摘要翻译： 本发明是用于将个人通信系统与有线电视设备集成的方法和装置。 一组无线电天线设备（RAD）连接到电缆设备。 RAD提供从电缆设备接收的信号的频率转换和功率控制，用于无线传输到远程单元。 RAD还提供从远程单元接收的无线信号的功率控制和频率转换，以将RAD传输到电缆设备上。 除了标准基站和集中控制器的功能外，CATV基站还必须补偿电缆厂的增益变化。 下行功率控制由可以隐藏在CDMA信号内的RAD参考信号来调节，以获得最大的效率。 上游功率控制由上游链路上的每个RAD单独发送的上游增益参考信号来调节。
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5.发明授权Method and apparatus for integration of a wireless communication system with a cable T.V. system 失效用于将无线通信系统与电缆T.V.系统集成的方法和装置
公开(公告)号：US5867763A
公开(公告)日：1999-02-02
申请号：US600104
申请日：1996-02-08
CPC分类号： H04W88/085 , H04N7/17309
摘要： The present invention is a method and apparatus for integrating a personal communication system with a cable television plant. A set of radio antenna devices (RAD) are connected to the cable plant. The RADs provide frequency conversion and power control of signal received from the cable plant for wireless transmission to the remote units. The RADs also provide power control and frequency conversion of wireless signals received from the remote units for transmission by the RADs onto the cable plant. In addition to the functions of standard base stations and centralized controller, the CATV base station must also compensate for gain variations in the cable plant. The downstream power control is regulated by a RAD reference signal which can be hidden within the CDMA signal for maximum efficiency. The upstream power control is regulated by an upstream gain reference signal which is individually transmitted by each RAD on the upstream link. The architecture of the present invention lends itself to a great deal of flexibility. Each RAD can operate as either an element of a distributed antenna or a base station sector unto itself. The function of each RAD as distributed antenna or as sector can be remotely programmed from the headend processor. Thus the capacity density of the system can be changed to accommodate the changing traffic density. The flexibility also is important at system deployment. When the system is deploy, the entire system may feed only one sector at the base station thus reducing the start-up cost of implementing a system. As system traffic increases, more resources can simply be added at the headend to provide more capacity.
摘要翻译： 本发明是用于将个人通信系统与有线电视设备集成的方法和装置。 一组无线电天线设备（RAD）连接到电缆设备。 RAD提供从电缆设备接收的信号的频率转换和功率控制，用于无线传输到远程单元。 RAD还提供从远程单元接收的无线信号的功率控制和频率转换，以将RAD传输到电缆设备上。 除了标准基站和集中控制器的功能外，CATV基站还必须补偿电缆厂的增益变化。 下行功率控制由可以隐藏在CDMA信号内的RAD参考信号来调节，以获得最大的效率。 上游功率控制由上游链路上的每个RAD单独发送的上游增益参考信号来调节。 本发明的架构具有很大的灵活性。 每个RAD可以作为分布式天线或基站扇区的元件本身进行操作。 每个RAD作为分布式天线或扇区的功能可以从头端处理器进行远程编程。 因此，可以改变系统的容量密度以适应不断变化的交通密度。 系统部署时的灵活性也很重要。 当系统部署时，整个系统可以在基站仅馈送一个扇区，从而降低了实现系统的启动成本。 随着系统流量的增加，在头端可以简单地添加更多的资源来提供更多的容量。
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6.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
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。
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公开(公告)号：US5802105A
公开(公告)日：1998-09-01
申请号：US347526
申请日：1994-11-30
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。
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8.发明授权System and method for generating signal waveforms in a CDMA cellular telephone system 失效用于在CDMA蜂窝电话系统中产生信号波形的系统和方法
公开(公告)号：US5715236A
公开(公告)日：1998-02-03
申请号：US156757
申请日：1993-11-24
申请人： Klein S. Gilhousen , Irwin M. Jacobs , Roberto Padovani , Lindsay A. Weaver, Jr. , Charles E. Wheatley, III , Andrew J. Viterbi
发明人： Klein S. Gilhousen , Irwin M. Jacobs , Roberto Padovani , Lindsay A. Weaver, Jr. , Charles E. Wheatley, III , Andrew J. Viterbi
IPC分类号： H04B1/707 , H04B1/7075 , H04B1/709 , H04B1/7115 , H04B7/005 , H04B7/26 , H04J3/02 , H04J3/16 , H04J3/22 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/18 , H04L20060101 , H04L1/00 , H04L1/06 , H04L1/08 , H04L5/02 , H04L5/12 , H04L23/02 , H04L27/30 , H04W52/26
CPC分类号： H04L1/0002 , H04B1/3888 , H04B1/707 , H04B1/70757 , H04B1/709 , H04B7/2618 , H04B7/2628 , H04B7/2637 , H04J13/0022 , H04J13/0048 , H04J13/10 , H04J13/107 , H04J13/18 , H04L1/0006 , H04L1/0065 , H04L1/0068 , H04L1/0071 , H04L1/06 , H04L23/02 , H04L5/02 , H04L5/12 , H04B1/7115 , H04B2201/70701 , H04B2201/70703 , H04L1/0046 , H04L1/08 , H04W52/26 , Y02B60/31
摘要： A system and method for communicating information signals using spread spectrum communication techniques. PN sequences are constructed that provide orthogonality between the users so that mutual interference will be reduced, allowing higher capacity and better link performance. With orthogonal PN codes, the cross-correlation is zero over a predetermined time interval, resulting in no interference between the orthogonal codes, provided only that the code time frames are time aligned with each other. In an exemplary embodiment, signals are communicated between a cell-site and mobile units using direct sequence spread spectrum communication signals. In the cell-to-mobile link, pilot, sync, paging and voice channels are defined. Information communicated on the cell-to-mobile link channels are, in general, encoded, interleaved, bi-phase shift key (BPSK) modulated with orthogonal covering of each BPSK symbol along with quadrature phase shift key (QPSK) spreading of the covered symbols. In the mobile-to-cell link, access and voice channels are defined. Information communicated on the mobile-to-cell link channels are, in general, encoded, interleaved, orthogonal signalling along with QPSK spreading.
摘要翻译： 一种使用扩频通信技术传送信息信号的系统和方法。 构造PN序列，以提供用户之间的正交性，从而减少相互干扰，从而允许更高的容量和更好的链路性能。 对于正交PN码，在相关的时间间隔内，互相关为0，导致正交码之间没有干扰，只要码时间帧彼此时间对准。 在示例性实施例中，使用直接序列扩频通信信号在小区站点和移动单元之间传送信号。 在小区到移动链路中，定义了导频，同步，寻呼和语音信道。 在小区到移动链路信道上传送的信息通常是用每个BPSK符号的正交覆盖调制的编码，交织，双相移键（BPSK）以及覆盖符号的正交相移键（QPSK）扩展 。 在移动小区链路中，定义了接入和语音信道。 一般来说，在移动小区链路信道上传送的信息一起编码，交织，正交信令以及QPSK扩频。
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公开(公告)号：US5504773A
公开(公告)日：1996-04-02
申请号：US171146
申请日：1993-12-21
IPC分类号： H04B1/707 , H04B1/7075 , H04B1/7115 , H04B7/005 , H04B7/26 , H04J3/16 , H04J3/22 , H04J3/24 , H04J11/00 , H04J13/00 , H04J13/18 , H04L1/00 , H04L1/08 , H04L5/02 , H04L5/12 , H04L7/04 , H04L23/02 , H04B1/69 , G06F11/00
CPC分类号： H04L1/0057 , H04B1/707 , H04B1/70757 , H04B7/2618 , H04B7/2628 , H04B7/2637 , H04J13/00 , H04J3/16 , H04J3/1688 , H04J3/22 , H04J3/24 , H04L1/0059 , H04L1/0065 , H04L1/0068 , H04L1/0071 , H04L1/08 , H04L23/02 , H04L5/02 , H04L5/12 , H04L7/048 , H04B1/7115 , H04B2201/70701 , H04B2201/70703 , H04J13/0048 , H04J13/18 , H04W52/26
摘要： In a digital communication system in which digital data is transmitted in data frames of a preselected time duration, a method and apparatus for formatting digital data in each data frame. A set of data bits of a first data type having a bit count corresponding to one of a plurality of predetermined bit counts are provided. A set of parity check bits for the set of data bits of said first data type are generated when the bit count is a highest bit count or a next to highest bit count. A set of tail bits is generated in accordance with a predetermined frame termination format. In respective order the set of data bits of the first data type, the parity check bits, and the tail bits are porovided in a data frame if the bit count is of the highest bit count or of the next to highest bit count. Otherwise, the set of data bits of the first data type and the tail bits are provided in respective order in the data frame.
摘要翻译： 在数字数据在预选持续时间的数据帧中发送的数字通信系统中，在每个数据帧中格式化数字数据的方法和装置。 提供具有对应于多个预定位计数之一的位计数的第一数据类型的一组数据位。 当比特计数是最高比特数或下一个最高比特数时，产生用于所述第一数据类型的数据比特组的一组奇偶校验位。 根据预定的帧终止格式生成一组尾比特。 如果比特数是最高比特数或下一个到最高比特数，则在相应的顺序中，如果第一数据类型，奇偶校验位和尾比特的数据比特的数据比特被排列在数据帧中。 否则，在数据帧中以相应的顺序提供第一数据类型和尾比特的数据比特组。
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10.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
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。
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