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1.发明授权Method and apparatus for optimizing receiver synchronization in a radio communication system 失效用于在无线电通信系统中优化接收机同步的方法和装置
公开(公告)号：US5712624A
公开(公告)日：1998-01-27
申请号：US398274
申请日：1995-03-03
CPC分类号： H04W88/026
摘要： A fixed system receiver (107) operates in a synchronization mode which is one of a synchronous mode and an asynchronous mode. A system controller (102) transmits a response command which includes a preamble indicator corresponding to the synchronization mode of the fixed system receiver (107). A selective call radio (106) receives and decodes the preamble indicator and generates a response message data unit (312). The synchronous header data packet (660) is preceded by a synchronizing packet (650) when the preamble indicator indicates the asynchronous mode and is not preceded by the synchronizing packet (650) when the preamble indicator indicates the synchronous mode. The selective call radio (106) transmits the response message data unit (312). The fixed system receiver (107) acquires symbol recovery timing and synchronizes to data packet boundaries of the response message data unit (312), using the synchronizing packet (650) when included.
摘要翻译： 固定系统接收器（107）以同步模式和异步模式之一的同步模式操作。 系统控制器（102）发送包括与固定系统接收器（107）的同步模式对应的前导码指示符的响应命令。 选呼无线电（106）接收并解码前导码指示符并产生响应消息数据单元（312）。 当前导码指示符指示同步模式时，当前同步码指示符指示异步模式并且不在同步分组（650）之前时，同步头数据分组（660）之前是同步分组（650）。 选呼通信（106）发送响应消息数据单元（312）。 固定系统接收器（107）在包含时使用同步分组（650）获取符号恢复定时并与响应消息数据单元（312）的数据分组边界同步。
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2.发明授权Method and apparatus for minimizing false detection of packet data in a communication receiver 失效用于最小化通信接收机中的分组数据的错误检测的方法和装置
公开(公告)号：US5473612A
公开(公告)日：1995-12-05
申请号：US345668
申请日：1994-11-28
CPC分类号： H04L7/042 , H04L1/0083 , H04L7/08
摘要： A method and apparatus minimize false detection of packet data in a receiver (202) due to noise in a communication system (100) utilizing time slots (420). Some time slots (420) contain a data packet (418), while others contain only noise. The data packet (418) includes a sync word (602) and an error-detecting code word (604, 606, 608). The receiver (202) is synchronized (1006, 1008) with a nominal predetermined timing of the time slots (420), and determines (1014) time windows (808) for receiving the data packets (418). During each of the time windows (808) data is received, demodulated, and stored (1016), and a predetermined portion of the data stored is searched (1018) to locate a point of maximum correlation between the data and a data template (902) matching the sync word (602). The data packet (418) is decoded (1020) by utilizing the point of maximum correlation as a reference, and the code word (604, 606, 608) of the data packet (418) is examined (1022, 1024) to determine whether the data packet (418) is valid or invalid.
摘要翻译： 一种方法和装置，由于利用时隙（420）的通信系统（100）中的噪声，使接收机（202）中的分组数据的错误检测最小化。 一些时隙（420）包含数据分组（418），而其他时隙仅包含噪声。 数据分组（418）包括同步字（602）和检错码字（604,606,608）。 接收器（202）与时隙（420）的标称预定定时同步（1006,1008），并且确定（1014）用于接收数据分组的时间窗口（808）（418）。 在每个时间窗口（808）期间，数据被接收，解调和存储（1016），并且搜索存储的数据的预定部分（1018）以定位数据与数据模板之间的最大相关点（902 ）匹配同步字（602）。 通过利用最大相关点作为参考来对数据分组（418）进行解码（1020），并检查数据分组（418）的代码字（604,606,608）（1022,1024）以确定是否 数据包（418）有效或无效。
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公开(公告)号：US20110010540A1
公开(公告)日：2011-01-13
申请号：US12848745
申请日：2010-08-02
CPC分类号： H04L9/3247 , H04L9/321 , H04L9/3263 , H04L2209/56 , H04L2209/80 , H04W12/06 , H04W12/10
摘要： A wireless communication system includes a pager or similar device that communicates to a home terminal. The home terminal confirms the identity of the pager and attaches a certificate to the message for ongoing transmission. Where the recipient is also a pager, an associated home terminal verifies the transmission and forwards it in a trusted manner without the certificate to the recipient.
摘要翻译： 无线通信系统包括与家庭终端通信的寻呼机或类似设备。 家庭终端确认寻呼机的身份，并将证书附加到消息中进行正在进行的传输。 在接收者也是寻呼机的情况下，相关联的家庭终端验证传输并以可信赖的方式转发它，而没有证书给接收者。
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4.发明授权Code division multiple access (CDMA) inbound messaging system utilizing interference cancellation to recover inbound messages 失效使用干扰消除来恢复入站消息的码分多址（CDMA）入站消息系统
公开(公告)号：US5323418A
公开(公告)日：1994-06-21
申请号：US3720
申请日：1993-01-13
IPC分类号： H04B1/7107 , H04B7/26 , H04Q7/38 , H04L27/30
CPC分类号： H04B7/2628 , H04B1/71072
摘要： A base station for processing a received and stored spread spectrum signal determines the signal strengths of a first plurality of signals included in the stored spread spectrum signal. The strongest signal of the first plurality is subtracted from the stored signal such that the stored signal is replaced in the memory by a modified spread spectrum signal including a second plurality of signals. The base station determines signal strengths of the second plurality of signals, then subtracts the strongest of the second plurality from the modified spread spectrum signal.
摘要翻译： 用于处理接收和存储的扩展频谱信号的基站确定包含在所存储的扩频信号中的第一多个信号的信号强度。 从所存储的信号中减去第一多个信号中最强的信号，使得存储的信号在存储器中被包括第二多个信号的修改的扩频信号替换。 基站确定第二多个信号的信号强度，然后从修改的扩频信号中减去第二多个信号中最强的。
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公开(公告)号：US06515971B2
公开(公告)日：2003-02-04
申请号：US09737708
申请日：2000-12-15
IPC分类号： H04Q714
CPC分类号： H04W8/245 , H04W48/16 , H04W88/022
摘要： A method is provided for background scanning in a selective call communication system (102) having a plurality of channels (110, 112, 114), wherein a selective call device (104) has designated thereto one of an odd and even frame compulsory decoding schedule. The selective call device (104) decodes system configuration information (SCI) on odd SCI frames during the odd compulsory decoding schedule, scans for even SCI frames of target channels while maintaining the odd compulsory decoding schedule, and releases or maintains the odd compulsory decoding schedule based on the system configuration information found on the target channels.
摘要翻译： 提供了一种用于具有多个信道（110,112,114）的选择性呼叫通信系统（102）中的背景扫描的方法，其中选择性呼叫装置（104）已经向其指定奇数和偶数帧强制解码调度 。 选择呼叫装置（104）在奇数强制解码调度期间对奇数SCI帧上的系统配置信息（SCI）进行解码，同时扫描目标信道的偶数SCI帧，同时保持奇数强制解码调度，并释放或维持奇数强制解码调度 基于目标通道上找到的系统配置信息。
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6.发明授权
公开(公告)号：US5799012A
公开(公告)日：1998-08-25
申请号：US583364
申请日：1996-01-05
CPC分类号： H04W88/187 , H04L1/0007 , H04L1/1614 , H04L1/1671 , H04L1/1854 , H04L1/1887
摘要： A two-way wireless selective call communication system (20) using a synchronous time division multiplex communication protocol transmits messages divided into a plurality of data units (120, 126, and 128) from a plurality of selective call transceivers (32) to a paging terminal (33) during time slots (78), the number of data units and the time slots are set by the paging terminal controller (26) based on information, including size of the message information, received in an unscheduled transmission from each of the plurality of selective call transceivers. The paging terminal transmits to a selective call transceiver a multi-bit acknowledgment message having a one-bit acknowledgment for each of the plurality of data units. A selective call transceiver re-transmits data units not recovered by the terminal based upon content of the acknowledgment message. More than one selective call transceiver transmit during a one time slot set by the terminal.
摘要翻译： 使用同步时分复用通信协议的双向无线选呼通信系统（20）将从多个选呼通信收发器（32）分割成多个数据单元（120,126和128）的消息发送到寻呼 终端（33）在时隙（78）期间，由所述寻呼终端控制器（26）根据包含从所述呼叫终端控制器（26）中的每一个的未预定传输中接收到的消息信息的大小的信息，设置所述数据单元的数量和所述时隙 多个选择性呼叫收发器。 寻呼终端向选择性呼叫收发机发送具有针对多个数据单元中的每一个的一比特确认的多比特确认消息。 选择呼叫收发器基于确认消息的内容重新发送终端未恢复的数据单元。 在终端设置的一个时隙期间，多个选呼接收机发送。
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7.发明授权
公开(公告)号：US5740534A
公开(公告)日：1998-04-14
申请号：US605560
申请日：1996-02-22
CPC分类号： H04W88/022
摘要： A selective call receiver (106) has a frequency synthesizer (708) for scanning a plurality of frequencies to determine a control channel to receive a signal and a receiver (704) for receiving the signal representative of an available frequency associated with a geographic region. The signal includes a channel identifier (404), a frequency assignment (406) and an active channel indicator (408). A processor (712) associates the channel identifier (404) with the frequency assignment (406) in response to the active channel indicator (408) indicating an available frequency of the geographic region and a memory (720) stores channel identifiers (404) associated with frequency assignments (406) designating available frequencies (408). The receiver (704) receives an address (333) and the channel identifier (404) on the control channel, a decoder (714) decodes the channel identifier (404) associated with the frequency assignment (406) to determine the available frequency where a message will be transmitted and the frequency synthesizer (708) switches to the available frequency indicated by the channel identifier (404) for receiving the message.
摘要翻译： 选呼接收机（106）具有用于扫描多个频率以确定用于接收信号的控制信道的频率合成器（708）和用于接收表示与地理区域相关联的可用频率的信号的接收机（704）。 信号包括信道标识符（404），频率分配（406）和有效信道指示符（408）。 响应于指示地理区域的可用频率的活动信道指示符（408），处理器（712）将信道标识符（404）与频率分配（406）相关联，并且存储器（720）存储相关联的信道标识符（404） 具有指定可用频率的频率分配（406）（408）。 接收器（704）在控制信道上接收地址（333）和信道标识符（404），解码器（714）解码与频率分配（406）相关联的信道标识符（404），以确定可用频率，其中 消息将被发送，并且频率合成器（708）切换到由用于接收消息的信道标识符（404）指示的可用频率。
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8.发明授权Communication system and method for securely communicating a message between correspondents through an intermediary terminal 有权用于通过中间终端在通讯者之间安全地传达消息的通信系统和方法公开(公告)号：US09003182B2
公开(公告)日：2015-04-07
申请号：US13549176
申请日：2012-07-13
CPC分类号： H04L9/3247 , H04L9/321 , H04L9/3263 , H04L2209/56 , H04L2209/80 , H04W12/06 , H04W12/10
摘要： A wireless communication system includes a pager or similar device that communicates to a home terminal. The home terminal confirms the identity of the pager and attaches a certificate to the message for ongoing transmission. Where the recipient is also a pager, an associated home terminal verifies the transmission and forwards it in a trusted manner without the certificate to the recipient.
摘要翻译： 无线通信系统包括与家庭终端通信的寻呼机或类似设备。 家庭终端确认寻呼机的身份，并将证书附加到消息中进行正在进行的传输。 在接收者也是寻呼机的情况下，相关联的家庭终端验证传输并以可信赖的方式转发它，而没有证书给接收者。
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公开(公告)号：US6069886A
公开(公告)日：2000-05-30
申请号：US995625
申请日：1997-12-22
CPC分类号： H04W88/187 , H04L1/1614 , H04L1/1671 , H04L1/1809 , H04L1/1854
摘要： A two-way wireless selective call communication system (20) using a synchronous time division multiplex communication protocol transmits messages divided into a plurality of data units (120, 126, and 128) from a plurality of selective call transceivers (32) to a paging terminal (33) during time slots (78), the number of data units and the time slots are set by the paging terminal controller (26) based on information, including size of the message information, received in an unscheduled transmission from each of the plurality of selective call transceivers. The paging terminal transmits to a selective call transceiver a multi-bit acknowledgment message having a one-bit acknowledgment for each of the plurality of data units. A selective call transceiver re-transmits data units not recovered by the terminal based upon content of the acknowledgment message. More than one selective call transceiver transmit during a one time slot set by the terminal.
摘要翻译： 使用同步时分复用通信协议的双向无线选呼通信系统（20）将从多个选呼通信收发器（32）分割成多个数据单元（120,126和128）的消息发送到寻呼 终端（33）在时隙（78）期间，由所述寻呼终端控制器（26）根据包含从所述呼叫终端控制器（26）中的每一个的未预定传输中接收到的消息信息的大小的信息，设置所述数据单元的数量和所述时隙 多个选择性呼叫收发器。 寻呼终端向选择性呼叫收发机发送具有针对多个数据单元中的每一个的一比特确认的多比特确认消息。 选择呼叫收发器基于确认消息的内容重新发送终端未恢复的数据单元。 在终端设置的一个时隙期间，多个选呼接收机发送。
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10.发明授权
公开(公告)号：US5689805A
公开(公告)日：1997-11-18
申请号：US541842
申请日：1995-10-10
CPC分类号： H04W84/025 , H04W68/00
摘要： A communication system (100) providing minimum transmission delay for message delivery to communication transceivers (510) includes a plurality of transmission cells (102, 104) which include one or more receivers (512) and a transmitter (506) and which define geographical transmission areas. The transmitter (506) transmits an address identifying the communication transceiver (510) for which a message is intended and a color code identifying the transmitter (506) during a first scheduled transmission time interval (212). At least one receiver (512) located within the transmission cells (102, 104) receives an acknowledgment including the address and color code generated by the communication transceiver (510) during a second scheduled transmission time interval (216). The transmitter (506) identified by the color code transmits the address and message during a scheduled message transmission frame (110) designated by the color code during a third time interval, during which time the address and message are received by the communication transceiver (510).
摘要翻译： 为通信收发器（510）的消息传送提供最小传输延迟的通信系统（100）包括多个传输小区（102,104），其包括一个或多个接收机（512）和发射机（506），并且定义地理传输 地区 发射机（506）在第一调度传输时间间隔（212）期间发送识别消息所针对的通信收发器（510）的地址和识别发射机（506）的颜色代码。 位于传输小区（102,104）内的至少一个接收机（512）在第二调度传输时间间隔（216）期间接收包括由通信收发机（510）产生的地址和颜色代码的确认。 由颜色标识的发射机（506）在第三时间间隔期间由颜色代码指定的调度消息传输帧（110）期间发送地址和消息，在此期间，地址和消息由通信收发信机（510 ）。
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