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1.发明授权公开(公告)号：US06947446B2
公开(公告)日：2005-09-20
申请号：US09760981
申请日：2001-01-16
CPC分类号： H04L47/10 , H04L1/0059 , H04L1/007 , H04L1/0083 , H04L1/1628 , H04L1/1809 , H04L1/1812 , H04L1/1829 , H04L47/14 , H04L47/193 , H04L47/24 , H04L2001/0097 , H04W28/06 , H04W74/04
摘要： A slot format and acknowledgment method for use in a communication network that contains one or more wireless links. The slot format provides for the segmenting and reassembly of packets for transport over a wireless link. It also provides support for multiple types of service for the data being carried over the wireless link as well as allocating of access to the wireless link among a plurality of communication units. The acknowledgment method provides for detection of errors over the wireless link, the selective acknowledgment of error-free transmissions and the selective resending of transmissions received in error.
摘要翻译： 一种在包含一个或多个无线链路的通信网络中使用的时隙格式和确认方法。 时隙格式提供用于通过无线链路传输的分组和分组。 它还提供对通过无线链路承载的数据的多种类型的服务的支持以及在多个通信单元之间分配对无线链路的访问。 确认方法提供对无线链路上的错误的检测，无错误传输的选择性确认和错误地接收的传输的选择性重发。
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2.发明授权Method and apparatus for organizing and scheduling multimedia data transfers over a wireless channel 有权通过无线信道组织和调度多媒体数据传输的方法和装置公开(公告)号：US07002985B2
公开(公告)日：2006-02-21
申请号：US09760985
申请日：2001-01-16
申请人： Gregory A. Dertz , Alan P. Conrad , Robert D. LoGalbo , John B. Preston , Tyrone D. Bekiares , Donald G. Newberg
发明人： Gregory A. Dertz , Alan P. Conrad , Robert D. LoGalbo , John B. Preston , Tyrone D. Bekiares , Donald G. Newberg
IPC分类号： H04L12/43
CPC分类号： H04W72/1242
摘要： A radio frequency communications system (100) includes wireless terminals (102) and base sites (104). The wireless terminals communicate with the base sites over a radio frequency channel (106). The base sites are interconnected to each other and other network elements via a packet network. The communication system has a radio frequency channel (400) with time slots (406, 408) for transmission of both delay-sensitive data, such as streaming audio and video, and non-delay-sensitive data. A method and apparatus are provided for determining whether a time slot in the radio frequency channel is to be allocated to delay-sensitive data or non-delay-sensitive data (704, 706, 708). Each packet of data transmitted over the wireless channel has a type of service field (900). The type of service field has a precedence or priority value (902) and a service type (904). The priority values are used to determine which packet should be transmitted across the radio frequency channel next and the service type determines the transmission protocol.
摘要翻译： 射频通信系统（100）包括无线终端（102）和基站（104）。 无线终端通过射频信道（106）与基站通信。 基站经由分组网络彼此互连和其它网络元件。 通信系统具有用于传输诸如流式音频和视频之类的延迟敏感数据以及非延迟敏感数据的具有时隙（406,408）的射频信道（400）。 提供一种方法和装置，用于确定射频信道中的时隙是否被分配给延迟敏感数据或非延迟敏感数据（704,706,708）。 通过无线信道发送的每个数据分组具有一种服务字段（900）。 服务类型具有优先级或优先权值（902）和服务类型（904）。 优先级值用于确定哪个分组应在下一个射频信道上传输，业务类型决定传输协议。
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3.发明授权Method and apparatus for determining and reserving bandwidth for transmitting delay-sensitive streaming data over a radio frequency channel 有权用于确定和保留用于在射频信道上发送延迟敏感流数据的带宽的方法和装置公开(公告)号：US06680930B2
公开(公告)日：2004-01-20
申请号：US09761423
申请日：2001-01-16
申请人： Donald G. Newberg , Tyrone D. Bekiares , Gregory A. Dertz , Bradley M. Hiben , Kevin G. Doberstein
发明人： Donald G. Newberg , Tyrone D. Bekiares , Gregory A. Dertz , Bradley M. Hiben , Kevin G. Doberstein
IPC分类号： H04B7212
CPC分类号： H04W28/26 , H04L47/14 , H04L47/15 , H04L47/2416 , H04L47/70 , H04L47/72 , H04L47/801 , H04L47/822 , H04L47/824 , H04W4/18 , H04W28/20 , H04W72/0453
摘要： A radio frequency communications system (100) includes wireless terminals (102) and base sites (104). The wireless terminals communicate with the base sites over a radio frequency channel (106). The base sites are interconnected to each other and other network elements via a packet network. A method and apparatus determine for a particular delay-sensitive application on the wireless terminal, for example, an audio or video transmission, the requirements for bandwidth for transmission over the radio frequency channel (500, 502). After the requirements on the radio frequency channel are determined, the necessary channel bandwidth, if available, is reserved or allocated to guarantee performance to the application (510). The reserved bandwidth is utilized by selectively granting access to the radio frequency channel on the basis of the bandwidth allocated to the device.
摘要翻译： 射频通信系统（100）包括无线终端（102）和基站（104）。 无线终端通过射频信道（106）与基站通信。 基站经由分组网络彼此互连和其它网络元件。 方法和装置确定无线终端上的特定延迟敏感应用，例如音频或视频传输，对于在射频信道（500,502）上进行传输的带宽要求。 在确定了对射频信道的要求之后，必要的信道带宽（如果可用）被保留或分配以保证对应用的性能（510）。 通过基于分配给设备的带宽来选择性地授予对射频信道的接入来利用保留带宽。
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公开(公告)号：US5483673A
公开(公告)日：1996-01-09
申请号：US153403
申请日：1993-11-17
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。
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公开(公告)号：US06721267B2
公开(公告)日：2004-04-13
申请号：US09760984
申请日：2001-01-16
IPC分类号： H04J1100
CPC分类号： H04W99/00 , H04L5/0007 , H04L5/0048 , H04L5/0051 , H04L5/0053 , H04W74/04
摘要： A scalable slot format defining positions of synchronization symbols, pilot symbols and data symbols for various numbers of sub-channels and various lengths of time in a multi-carrier communication system. An initial pattern (500) and one or more follow-on patterns (600, 700) are defined identifying positions of data symbols, synchronization symbols and pilot symbols for a first number of sub-channels corresponding to a first bandwidth. An extended pattern is constructed from the one or more follow-on patterns. The extension pattern is appended to the initial pattern to form a base pattern (810, 910, 1010). The base pattern (810, 910, 1010) is replicated zero or more times to form an expanded pattern (812, 910, 1015) identifying positions of data symbols, synchronization symbols and pilot symbols for an expanded number of sub-channels corresponding to a second bandwidth. The slot format may be implemented by a transmitter (100) having subdivided an original information signal into M bit streams and having encoded each of the M bit streams to 16QAM symbols to form M symbol streams, by inserting synchronization and pilot symbols into each of the M symbol streams at positions determined by the expanded pattern.
摘要翻译： 在多载波通信系统中定义不同数量的子信道和不同时间长度的同步符号，导频符号和数据符号的位置的可扩展时隙格式。 定义初始模式（500）和一个或多个跟随模式（600,700），用于识别对应于第一带宽的第一数量子信道的数据符号，同步符号和导频符号的位置。 从一个或多个后续模式构建扩展模式。 扩展模式被附加到初始模式以形成基本模式（810,910,1010）。 基本模式（810,910,1010）被复制零次或更多次，以形成识别用于扩展数目的子信道对应的数据符号，同步符号和导频符号的位置的扩展模式（812,910,1015） 第二个带宽。 时隙格式可以由已经将原始信息信号细分为M个比特流并已通过将每个M比特流编码为16QAM符号以形成M个符号流来实现，通过将同步和导频符号插入到每个 M符号流在由扩展模式确定的位置处。
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公开(公告)号：US5805612A
公开(公告)日：1998-09-08
申请号：US524491
申请日：1995-09-07
IPC分类号： H04L1/00
CPC分类号： H04L1/0057
摘要： An APCO 25 radio communication system 200 includes a repeater 101 arranged to receive signals from an inbound repeater link 103, thereby forming received signals. The repeater 101 is arranged to forward the received signals to a subscriber 121 via an outbound radio frequency path 113. The received signals include two types of packets, namely, packets 105 with correctable errors 107, and "erasure packets"109 with detectable-but-uncorrectable errors 111. The inbound repeater link is equipped with error correcting means 110 for correcting the correctable errors 107. The inbound repeater link is also equipped with error mitigating means 130 for mitigating the detectable-but-uncorrectable errors 111. The error mitigation is performed in accordance with the improved multi-band excitation ("IMBE") process.
摘要翻译： APCO 25无线电通信系统200包括被布置成从入站中继器链路103接收信号的中继器101，从而形成接收信号。 中继器101被布置成经由出站射频路径113将接收到的信号转发给用户121.接收到的信号包括两种类型的分组，即具有可校正错误的分组105，以及具有可检测但是的“擦除分组”109 入站中继器链路配备有用于校正可校正错误107的错误校正装置110.入站中继器链路还配备有用于减轻可检测但不可校正的错误111的误差减轻装置130.错误减轻是 根据改进的多频带激励（“IMBE”）过程进行。
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公开(公告)号：US5796784A
公开(公告)日：1998-08-18
申请号：US624042
申请日：1996-03-27
CPC分类号： H04L27/3488
摘要： In a modulator (300), a symbol weight determiner (301) determines a scaling factor (310) for at least one symbol (308). An integrator (303) and a complex symbol generator (305) operate to produce at least one complex symbol (314) based on the at least one symbol. The scaling factor (310) is used to scale the at least one complex symbol. In one embodiment, a scaler (307) comprises a gain-modifiable amplifier (609) and, in a second embodiment, the scaler comprises a gain-modifiable filter (809). When such a modulator is incorporated into an RF communication device (600, 800), the energy used to transmit any given symbol can be varied according to the relative importance of that symbol. Additionally, the overall received sensitivity of a communication, at a given signal strength, can be improved.
摘要翻译： 在调制器（300）中，符号权重确定器（301）确定至少一个符号（308）的缩放因子（310）。 基于该至少一个符号，积分器（303）和复合符号发生器（305）操作以产生至少一个复合符号（314）。 缩放因子（310）用于缩放至少一个复合符号。 在一个实施例中，缩放器（307）包括可增益修改的放大器（609），并且在第二实施例中，缩放器包括增益可修改的滤波器（809）。 当这种调制器被并入RF通信设备（600,800）中时，用于发送任何给定符号的能量可以根据该符号的相对重要性而变化。 此外，可以提高在给定信号强度下的通信的总体接收灵敏度。
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公开(公告)号：US5719903A
公开(公告)日：1998-02-17
申请号：US495954
申请日：1995-06-28
CPC分类号： H04L27/22 , H04L25/061 , H04L27/0008
摘要： Delayed symbols (204), including a current symbol (205), are compared by a comparator (206) with at least one predetermined pattern when the current symbol is equivalent to one of a set of predetermined values. Alternatively, a sign of the current symbol is compared with signs of a previous and a subsequent symbol when the current symbol is equivalent to one of the set of predetermined values. When the current symbol is equivalent to one of the set of predetermined values and when either the delayed symbols are equivalent to one of the at least one predetermined pattern or the sign of the current symbol matches the signs of the previous and subsequent symbols, a symbol corrector (208) applies a predetermined function to the current symbol to produce a received symbol (210).
摘要翻译： 包括当前符号（205）的延迟符号（204）在当前符号等同于一组预定值之中时，由具有至少一个预定模式的比较器（206）进行比较。 或者，当当前符号等同于该组预定值之一时，将当前符号的符号与先前和后续符号的符号进行比较。 当当前符号等于该组预定值中的一个时，并且当延迟符号等于至少一个预定模式中的一个或当前符号的符号与先前和后续符号的符号匹配时，符号 校正器（208）将预定函数应用于当前符号以产生接收符号（210）。
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公开(公告)号：US5465410A
公开(公告)日：1995-11-07
申请号：US343298
申请日：1994-11-22
CPC分类号： H03G5/24 , H04B1/1027 , H04B2001/1054 , H04B2001/1072
摘要： An FM receiver (100) that includes a plurality of filtering elements (120-124) that have various center frequencies and bandwidths that adjust to maximize the signal quality of a desired signal (104) recovers the desired signal (104) by inputting the desired signal (104) to each of the plurality of filtering elements (120-124). Signal recovery is performed on an output of each of the filtering elements (120-124) to obtain a plurality of recovered signals. The recovered signals are then measured to obtain a plurality of signal quality metrics for the desired signal.
摘要翻译： 一种FM接收器（100），其包括具有各种中心频率和带宽的多个滤波元件（120-124），所述多个滤波元件被调整以使所需信号（104）的信号质量最大化，通过输入期望信号（104）来恢复期望信号 信号（104）到多个滤波元件（120-124）中的每一个。 对每个滤波元件（120-124）的输出执行信号恢复以获得多个恢复的信号。 然后测量恢复的信号以获得用于期望信号的多个信号质量度量。
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公开(公告)号：US07814205B2
公开(公告)日：2010-10-12
申请号：US11300779
申请日：2005-12-15
IPC分类号： G06F15/173
CPC分类号： H04L69/28
摘要： A method for managing floor control in a network is disclosed. The method includes beginning a ballot timer when at least one of a) a first node packet is created at the node and b) a second node packet is received at the node from a second node. The first node packet comprises a first timestamp and the second node packet comprises a second timestamp. The ballot timer runs for a first predefined time interval. The method further includes determining a floor holder upon expiration of the first predefined time interval based upon an earliest time of the first timestamp and the second timestamp. Further, the node and the second node have a same absolute timing reference.
摘要翻译： 公开了一种用于管理网络中的楼层控制的方法。 所述方法包括当在所述节点处创建a）第一节点分组中的至少一个并且b）在所述节点处从第二节点接收到第二节点分组时，开始投票定时器。 第一节点分组包括第一时间戳，并且第二节点分组包括第二时间戳。 投票计时器运行第一预定时间间隔。 所述方法还包括：基于所述第一时间戳和所述第二时间戳的最早时间，在所述第一预定义时间间隔期满时确定楼层持有者。 此外，节点和第二节点具有相同的绝对定时参考。
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