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1. 发明授权

US5423059A Method for enhancing signal quality in a simulcast communication system 失效
标题翻译：一种提高联播通信系统信号质量的方法
公开(公告)号：US5423059A
公开(公告)日：1995-06-06
申请号：US98880
申请日：1993-07-29
申请人： Robert D. LoGalbo , Bradley M. Hiben , Mark C. Cudak
发明人： Robert D. LoGalbo , Bradley M. Hiben , Mark C. Cudak
IPC分类号： H04B7/06 , H04H20/67 , H04L1/24 , H04B7/00
CPC分类号： H04H20/67 , H04B7/0671 , H04L1/24
摘要： In a simulcast communication system (100), a communication unit (110-115) may request enhanced coverage area services by transmitting a request for enhanced signal quality to a central simulcast controller (101). Upon receipt, the central simulcast controller (101) identifies, based on information pertaining to the location of the communication unit, a set of transmitters (102-109) to enhance coverage in the area of the communication unit. The central simulcast controller determines enhanced coverage area delays for each of the transmitters and adjusts the respective delays of each transmitter such that transmitted signal quality is enhanced at the location of the communication unit.
摘要翻译：在联播通信系统（100）中，通信单元（110-115）可以通过向中央联播控制器（101）发送增强信号质量的请求来请求增强的覆盖区域服务。在接收时，中央联播控制器（101）基于与通信单元的位置相关的信息来识别一组发射机（102-109），以增强通信单元的区域中的覆盖。中央联播控制器确定每个发射机的增强的覆盖区域延迟，并且调整每个发射机的相应延迟，使得在通信单元的位置增强发射的信号质量。

2. 发明授权

US5220676A Synchronization method and apparatus 失效
标题翻译：同步方法和装置
公开(公告)号：US5220676A
公开(公告)日：1993-06-15
申请号：US687815
申请日：1991-04-19
申请人： Robert D. LoGalbo , Mark C. Cudak , Bradley M. Hiben
发明人： Robert D. LoGalbo , Mark C. Cudak , Bradley M. Hiben
IPC分类号： H04H20/67
CPC分类号： H04H20/67
摘要： An improved synchronization method and apparatus, according to the invention, is provided. According to the invention, in a simulcast system having a remote site receiving frames from a base site, each frame containing a predetermined number (k) of transmit sample periods, and the transmit sample clock and remote synchronization clock frequencies known (f.sub.tx and f.sub.pps respectively), the remote site synchronizes a frame as follows. First, it receives a frame from the base site. Second, it determines the sequence number n for the frame. Third, it determines the launch time the first frame was to be broadcast from the remote site. Fourth, it computes a realignment time based on [(n-1)*(k)+launch time for first frame] MOD (f.sub.tx f.sub.pps). Fifth, it transmits the first bit of the frame at the realignment time.
摘要翻译：提供了根据本发明的改进的同步方法和装置。根据本发明，在具有从基站接收帧的远程站点的同播系统中，每个帧包含预定数量（k）个发射采样周期，并且已知传输采样时钟和远程同步时钟频率（分别为ftx和fpps ），远程站点如下同步帧。首先，它从基站接收到一个帧。其次，它确定帧的序列号n。第三，它确定从远程站点广播第一帧的发射时间。第四，它基于[（n-1）*（k）+第一帧的发射时间] MOD（ftxfpps）计算重新调整时间。第五，它在重新调整时间传输帧的第一位。

3. 发明授权

US5280629A Technique for measuring channel delay 失效
标题翻译：测量通道延迟的技术
公开(公告)号：US5280629A
公开(公告)日：1994-01-18
申请号：US804860
申请日：1991-12-06
申请人： Robert D. Lo Galbo , Bradley M. Hiben , Mark C. Cudak
发明人： Robert D. Lo Galbo , Bradley M. Hiben , Mark C. Cudak
IPC分类号： H04B17/00 , H04H20/67 , H04J3/06 , H04B7/00
CPC分类号： H04H20/67 , H04B17/364 , H04J3/0682
摘要： A method for measuring channel delay measures the delay for a message to propagate from a prime site (100, 400) to a remote site (200, 500) via the channel (300, 600). The prime site includes a clock for providing a first value, T1, based on the current time at the prime site. The remote site includes a clock for providing a second value, T2, based on the current time at the remote site. Both clocks are synchronized with a common timing source, such as a GPS satellite timing signal. Therefore, T2 equals T1. In one embodiment, the prime site determines T1, and simultaneously sends a message to the remote site via the channel, the message including T1. Upon receiving the message, the remote site simultaneously determines T2. The remote site decodes the message to determine T1, and then determines the delay based on the difference between T2 and T1.
摘要翻译：用于测量信道延迟的方法测量消息经由信道（300,600）从主站点（100,400）传播到远程站点（200,500）的延迟。主要站点包括基于当前时间在主站点提供第一个值T1的时钟。远程站点包括基于远程站点当前时间提供第二个值T2的时钟。两个时钟与公共定时源同步，例如GPS卫星定时信号。因此，T2等于T1。在一个实施例中，主站点确定T1，并且同时经由信道向远程站点发送消息，该消息包括T1。远程站点收到消息后，同时确定T2。远程站点对消息进行解码以确定T1，然后根据T2和T1之间的差异确定延迟。

4. 发明授权

US5218621A Adaptive digital equalization filter 失效
标题翻译：自适应数字均衡滤波器
公开(公告)号：US5218621A
公开(公告)日：1993-06-08
申请号：US680460
申请日：1991-04-04
申请人： Mark C. Cudak , Bradley M. Hiben , Robert D. Lo Galbo
发明人： Mark C. Cudak , Bradley M. Hiben , Robert D. Lo Galbo
IPC分类号： H03H21/00 , H04H20/67
CPC分类号： H04H20/67 , H03H21/0012
摘要： An adaptive digital equalization filter is provided to remedy the differential time delay problem in a digital simulcast system. The digital simulcast system includes an adaptive digital equalization filter with N coefficients, and a fixed analog anti-alias filter. According to the invention, the adaptive digital equalization filter first measures the amount of delay contributed to the output signal by the fixed anti-alias filter. This is accomplished by exciting the anti-alias filter with a unit impulse, and measuring the resulting impulse response. The adaptive filter next determines the characteristics needed to compensate for the amount of measured delay contributed to the output signal by the fixed filter. This is accomplished by computing a new set of N coefficients using the Levinson-Durbin algorithm. The adaptive filter next adjusts its coefficients based on these determined characteristics. Further, the adaptive filter periodically determines when it is time to update the N coefficients.
摘要翻译：提供了一种自适应数字均衡滤波器来弥补数字同步播放系统中的差分时延问题。数字联播系统包括具有N个系数的自适应数字均衡滤波器和固定的模拟抗混叠滤波器。根据本发明，自适应数字均衡滤波器首先通过固定的抗混叠滤波器来测量对输出信号贡献的延迟量。这是通过用单位脉冲激励抗混叠滤波器并测量所得到的脉冲响应来实现的。接下来，自适应滤波器确定补偿由固定滤波器对输出信号贡献的测量延迟量所需的特性。这是通过使用Levinson-Durbin算法计算一组新的N个系数来实现的。接下来，自适应滤波器基于这些确定的特性来调整其系数。此外，自适应滤波器周期性地确定何时更新N个系数。

5. 发明授权

US5483673A Method and apparatus for providing access to a communication system 失效
标题翻译：用于提供对通信系统的访问的方法和装置
公开(公告)号：US5483673A
公开(公告)日：1996-01-09
申请号：US153403
申请日：1993-11-17
申请人： Bradley M. Hiben , Donald G. Newberg , Robert D. LoGalbo
发明人： Bradley M. Hiben , Donald G. Newberg , Robert D. LoGalbo
IPC分类号： H04W72/04 , H04W74/00 , H04B7/00
CPC分类号： H04W76/02 , H04W74/00
摘要： Communication units are provided access to a communication system (100) in the following manner. A base station (202) receives, from a requesting communication unit, a request, via a shared inbound communication resource (209), for an available message path (207). When a dual-mode outbound communication resource is operating in a control mode (205), the message path (207), having a first inbound communication resource (204) and the dual-mode outbound communication resource operating in a partial control mode (206), is assigned to the requesting communication unit. Thus, the shared inbound communication resource is consistently available, providing access to the communication system.
摘要翻译：提供通信单元以如下方式访问通信系统（100）。基站（202）从请求通信单元接收用于可用消息路径（207）的共享入站通信资源（209）的请求。当双模式出站通信资源在控制模式（205）中操作时，具有第一入站通信资源（204）的消息路径（207）和以部分控制模式（206）操作的双模式出站通信资源）被分配给请求通信单元。因此，共享入站通信资源始终可用，提供对通信系统的访问。

6. 发明授权

US5423058A Simulcast transmission system with selective call tones 失效
标题翻译：具有选呼功能的联播传输系统
公开(公告)号：US5423058A
公开(公告)日：1995-06-06
申请号：US197369
申请日：1994-02-17
申请人： Mark C. Cudak , Bradley M. Hiben , Robert D. Lo Galbo
发明人： Mark C. Cudak , Bradley M. Hiben , Robert D. Lo Galbo
IPC分类号： H04H20/67 , H04B7/14
CPC分类号： H04H20/67
摘要： A simulcast radio transmission system (250) transmits message signals (318) including selective call tones, originating from a message source (202), to a geographical area (115). The simulcast system includes a controller (204) coupled between the message source (202) and a plurality of remote transmitter sites (208, 210) for exchanging message signals (318) including selective call tones therebetween. Connecting the controller (204) to the plurality of transmitter sites (208, 210) are a plurality of interconnect links (224, 226), each having bounded propagation time delay characteristics. The simulcast system (250) employs phase numbers associated with the starting phase of the selective call tones to allow accurate reconstruction of the selective call tones. The controller (204) then combines (508) the message signals (318) with the launch time and the phase number to establish a message bundle and sends the message bundle to at least one of the plurality of transmitters (208, 210), via at least one of the plurality of interconnect links (224, 226).
摘要翻译：联播无线电传输系统（250）将包括从消息源（202）发起的选择呼叫音调的消息信号（318）发送到地理区域（115）。联播系统包括耦合在消息源（202）和多个远程发射器站点（208,210）之间的控制器（204），用于交换包括其间的选择呼叫音的消息信号（318）。将控制器（204）连接到多个发射机站点（208,210）是多个互连链路（224,226），每个互连链路具有有界的传播时间延迟特性。联播系统（250）使用与选呼通道的起始阶段相关联的相位数，以允许精确重建选呼通道。然后，控制器（204）将消息信号（508）与发射时间和相位数相组合（508）以建立消息束，并且将消息束发送到多个发射机（208,210）中的至少一个，经由多个互连链路（224,226）中的至少一个。

7. 发明授权

US5377229A Multi-modulation scheme compatible radio 失效
标题翻译：多调制方案兼容无线电
公开(公告)号：US5377229A
公开(公告)日：1994-12-27
申请号：US629931
申请日：1990-12-19
申请人： Alan L. Wilson , Mark C. Cudak , Bradley M. Hiben , Eric F. Ziolko , Steven C. Jasper
发明人： Alan L. Wilson , Mark C. Cudak , Bradley M. Hiben , Eric F. Ziolko , Steven C. Jasper
IPC分类号： H04L27/10 , H04L27/00 , H04L27/18
CPC分类号： H04L27/0008
摘要： A transceiver compatible with both wide channel constant envelope 4 level FSK FM modulation and narrow channel .pi./4 differential QPSK linear modulation allows compatible interaction between modified constant envelope and non-constant envelope transmitters. All Nyquist filtering occurs in the transmitters, and none in the receiver.
摘要翻译：兼容宽通道恒定包络4级FSK FM调制和窄通道pi / 4差分QPSK线性调制的收发器允许修改的恒定包络和非恒定包络发射机之间的兼容交互。所有奈奎斯特滤波发生在发射机中，接收机中不发生。

8. 发明授权

US08370417B2 Method for peer to peer subscriber registration and affiliation 有权
标题翻译：对等用户注册和归属方法
公开(公告)号：US08370417B2
公开(公告)日：2013-02-05
申请号：US12165006
申请日：2008-06-30
申请人： Robert D. LoGalbo , Bradley M. Hiben , Subhash P. Nair
发明人： Robert D. LoGalbo , Bradley M. Hiben , Subhash P. Nair
IPC分类号： G06F15/16
CPC分类号： H04W60/00 , H04W92/18
摘要： A method for subscriber registration and affiliation in a peer to peer wide area network is provided. The peer to peer wide area network includes at least one Subscriber and a plurality of Peers. The method includes: communicating a registration and affiliation message including a Subscriber Registration Affiliation Index from a Subscriber to a Peer of the plurality of Peers; routing a registration and affiliation update message including a Peer Registration Affiliation Index equal to the received Subscriber Registration Affiliation Index from the Peer to other Peers of the plurality of Peers; comparing the received Peer Registration Affiliation Index with one or more other received Peer Registration Affiliation Indexes by each of the plurality of Peers; and selecting by each of the plurality of Peers a Peer Registration Affiliation for the Subscriber corresponding to a highest value Peer Registration Affiliation Index.
摘要翻译：提供了一种用于对等广域网中用户注册和归属的方法。对等广域网包括至少一个用户和多个对等体。该方法包括：将来自用户的注册和归属消息包括订户注册关联索引传送到多个对等体的对等体; 将包括与所接收的订户注册关联索引相等的对等体注册关联索引从所述多个对等体路由到其他对等体的注册和归属更新消息; 将所接收到的对等体注册关联索引与多个对等体中的每一个的一个或多个其他接收的对等体注册关联索引进行比较; 并且由多个对等体中的每一个选择对应于最高值对等体注册关联索引的用户的对等体注册关联。

9. 发明授权

US08189583B2 System and method for peer-to-peer wide area network communication 有权
标题翻译：用于对等广域网通信的系统和方法
公开(公告)号：US08189583B2
公开(公告)日：2012-05-29
申请号：US12240966
申请日：2008-09-29
申请人： Robert D. LoGalbo , Bradley M. Hiben
发明人： Robert D. LoGalbo , Bradley M. Hiben
IPC分类号： H04L12/56
CPC分类号： H04W4/08 , H04W8/186
摘要： A method of operating a peer to facilitate fast group communication between subscribers in a peer-to-peer wide area network is disclosed. In the peer-to-peer wide area network, each of the subscribers are affiliated to a talkgroup, and further registered to at least one peer within the peer-to-peer wide area network. In operation, the peer exchanges messages with other peers to determine that one or more peers listed in a talkgroup topology is still active. When the peer receives a media for a talkgroup from a subscriber affiliated to the talkgroup, the peer duplicates the media for the talkgroup, and unicasts the duplicate media to the one or more peers that are listed as active in the talkgroup topology to enable the one or more peers to deliver the media to the respectively registered subscribers affiliated to the talkgroup.
摘要翻译：公开了一种操作对等体以促进对等广域网中用户之间的快速组通信的方法。在对等广域网中，每个用户隶属于一个通话组，并进一步向对等广域网中的至少一个对等体注册。在操作中，对等体与其他对等体交换消息以确定在通话组拓扑中列出的一个或多个对等方仍然是活动的。当对等体接收到来自与会话组的用户的通话组的媒体时，对等体复制用于通话组的媒体，并且将该重复媒体单播到在通话组拓扑中被列为活动的一个或多个对等体，以使一个或更多的对等方将媒体传送到与该会话群组相关联的分别注册的用户。

10. 发明申请

US20120087354A1 METHODS AND RECEIVERS FOR PROCESSING TRANSMISSIONS FROM TWO DIFFERENT TRANSMITTING RADIOS 审中-公开
标题翻译：从两个不同的发射无线电处理传输的方法和接收器
公开(公告)号：US20120087354A1
公开(公告)日：2012-04-12
申请号：US12901818
申请日：2010-10-11
申请人： Robert D. LoGalbo , Kevin G. Doberstein , Bradley M. Hiben , Christopher H. Wilson
发明人： Robert D. LoGalbo , Kevin G. Doberstein , Bradley M. Hiben , Christopher H. Wilson
IPC分类号： H04J3/00 , H04W72/12 , H04W88/02 , H04W40/00
CPC分类号： H04B7/022
摘要： A method and receiver apparatus for a receiving radio unit are disclosed for use in a wireless communication system for processing transmissions from different radio units at the receiving radio unit. A first transmitting radio unit transmits first audio information (e.g., a first audio encoded frame) in a first time slot, and a second transmitting radio unit then transmits second audio information (e.g., a second audio encoded frame) in a second time slot. The receiving radio unit receives radio frequency (RF) signals comprising a first bit stream corresponding to the first audio information, and a second bit stream corresponding to the second audio information. Based on the first bit stream and the second bit stream the receiving radio unit generates a single analog audio signal that comprises combined audio information corresponding to the first audio information and the second audio information.
摘要翻译：公开了一种用于接收无线电单元的方法和接收机装置，用于在接收无线电单元处理来自不同无线电单元的传输的无线通信系统中。第一发送无线电单元在第一时隙中发送第一音频信息（例如，第一音频编码帧），然后第二发送无线电单元在第二时隙中发送第二音频信息（例如，第二音频编码帧）。接收无线电单元接收包括与第一音频信息相对应的第一比特流的射频（RF）信号和对应于第二音频信息的第二比特流。基于第一比特流和第二比特流，接收无线电单元产生包括对应于第一音频信息和第二音频信息的组合音频信息的单个模拟音频信号。

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