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公开(公告)号：US07369869B2
公开(公告)日：2008-05-06
申请号：US10899479
申请日：2004-07-26
IPC分类号： H04Q7/20
CPC分类号： H04W48/12
摘要： A method and system for scanning a TDMA channel by a subscriber unit in a wireless communications landscape 100 is disclosed. The subscriber unit locks onto a channel that is preprogrammed in the subscriber unit. A base radio transmits a control message to the subscriber unit. The control message informs the subscriber unit of activity present on the channel. The subscriber unit receives and decodes the control message to determine whether there is activity on the channel. If there is, the subscriber unit determines whether the activity is of interest. If it is, then the subscriber unit remains on the channel to receive the activity present on the channel.
摘要翻译： 公开了一种用于在无线通信环境100中由用户单元扫描TDMA信道的方法和系统。 用户单元锁定在用户单元中被预编程的信道上。 基站无线电向用户单元发送控制消息。 该控制消息通知用户单元存在于该信道上的活动。 用户单元接收并解码控制消息以确定信道上是否存在活动。 如果存在，则订户单元确定该活动是否是感兴趣的。 如果是，则用户单元保持在信道上以接收该频道上存在的活动。
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公开(公告)号：US08914699B2
公开(公告)日：2014-12-16
申请号：US13459882
申请日：2012-04-30
申请人： Satyanarayan R. Panpaliya , Thomas B. Bohn , Dipendra M. Chowdhary , David G. Wiatrowski , Zhijun Zhu , Stephen Lee , Grace Zhong , Rui Yang
发明人： Satyanarayan R. Panpaliya , Thomas B. Bohn , Dipendra M. Chowdhary , David G. Wiatrowski , Zhijun Zhu , Stephen Lee , Grace Zhong , Rui Yang
IPC分类号： H03M13/00 , H04L1/00 , H03M13/13 , H04N21/6375
CPC分类号： H04L1/0061 , H03M13/13 , H04N21/6375
摘要： A first subscriber unit (SU) operating in a two-way radio frequency (RF) communications system having at least one fixed terminal, one or more channels, and a plurality of subscriber units, generates a first burst of data for transmission to the at least one fixed terminal. The first SU calculates a cyclic redundancy check (CRC) or checksum value over (i) at least a first portion of the first burst of data and (ii) at least a portion of a first private data. The first SU transmits the first burst of data and the calculated CRC/checksum value, but not the first private data, to the at least one fixed terminal. The fixed terminal then calculates its own CRC/checksum over the received burst and its own copy of the first private data, and compares the result with the received CRC/checksum. The fixed terminal authenticates the received burst if the values match.
摘要翻译： 在具有至少一个固定终端，一个或多个信道和多个用户单元的双向射频（RF）通信系统中操作的第一用户单元（SU）生成第一数据突发以传输到 至少一个固定终端。 第一SU在（i）第一数据突发的至少第一部分和（ii）至少一部分第一私有数据之后计算循环冗余校验（CRC）或校验和值。 第一SU将第一个数据突发和计算的CRC /校验和值发送到至少一个固定终端，而不是第一私有数据。 然后，固定终端在接收的脉冲串及其自己的第一私人数据的副本上计算其自己的CRC /校验和，并将结果与接收的CRC /校验和进行比较。 如果值匹配，则固定终端对接收到的突发进行认证。
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3.发明授权公开(公告)号：US08150438B2
公开(公告)日：2012-04-03
申请号：US12433754
申请日：2009-04-30
IPC分类号： H04B7/00
摘要： Within a two way radio frequency communication system, a repeater transmits an identity of a rest channel when transmitting during an active communication call on a channel other than the rest channel. A subscriber unit communicating within the active communication, receives the identity of the rest channel, leaves the active communication; and initiates a new communication on the rest channel.
摘要翻译： 在双向无线电频率通信系统中，当在除了休眠信道之外的信道上进行主动通信呼叫期间发送时，中继器发送休息信道的标识。 在主动通信中通信的用户单元接收休息信道的身份，离开主动通信; 并在休息频道上启动新的通信。
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4.发明申请公开(公告)号：US20100279726A1
公开(公告)日：2010-11-04
申请号：US12433754
申请日：2009-04-30
IPC分类号： H04B7/00
摘要： Within a two way radio frequency communication system, a repeater transmits an identity of a rest channel when transmitting during an active communication call on a channel other than the rest channel. A subscriber unit communicating within the active communication, receives the identity of the rest channel, leaves the active communication; and initiates a new communication on the rest channel.
摘要翻译： 在双向无线电频率通信系统中，当在除了休眠信道之外的信道上进行主动通信呼叫期间发送时，中继器发送休息信道的标识。 在主动通信中通信的用户单元接收休息信道的身份，离开主动通信; 并在休息频道上启动新的通信。
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公开(公告)号：US07729701B2
公开(公告)日：2010-06-01
申请号：US11191563
申请日：2005-07-28
CPC分类号： H04W16/14 , H04W52/0206 , Y02D70/00
摘要： A method and system include de-keying a base station in a conventional TDMA communications system and staffing a timer in the base station when the base station de-keys. The method and system further include receiving a transmission from a mobile station and re-keying and repeating the transmission, if the transmission is received with proper synchronization before expiration of the timer.
摘要翻译： 一种方法和系统包括在传统的TDMA通信系统中对基站进行解密，并且当基站解密时在基站中配置定时器。 所述方法和系统还包括如果在定时器到期之前以适当的同步接收到传输，则从移动站接收传输并重新键入并重复传输。
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6.发明授权Method for allowing a subscriber unit to access a channel for voice transmissions 有权用于允许用户单元访问用于语音传输的信道的方法公开(公告)号：US07499441B2
公开(公告)日：2009-03-03
申请号：US10984431
申请日：2004-11-09
申请人： David G. Wiatrowski , Thomas B. Bohn , Thomas J. Senese , John P. Belmonte , Terry K. Mansfield
发明人： David G. Wiatrowski , Thomas B. Bohn , Thomas J. Senese , John P. Belmonte , Terry K. Mansfield
CPC分类号： H04W4/06 , H04W4/10 , H04W72/005 , H04W76/45
摘要： In a TDMA system whereby the TDMA system comprises a plurality of subscriber units and a plurality of base radios, a method and system for providing access to a channel for voice transmissions where the first subscriber unit determines whether it is provisioned for polite access to the channel. In addition, the first subscriber unit is characterized by a first color code and a first talkgroup ID. The first subscriber unit also examines the voice transmissions on the channel for voice transmissions that are from a second subscriber unit with a second color code and a second talkgroup ID. If the first color code and the second color code match and if the first talkgroup ID and the second talkgroup match, then the first subscriber unit is allowed access to the channel for voice transmissions even though the channel is being used for voice transmissions by the second subscriber unit.
摘要翻译： 在TDMA系统中，TDMA系统包括多个用户单元和多个基站无线电，一种用于提供对用于语音传输的信道的接入的方法和系统，其中第一用户单元确定是否被提供用于礼貌访问信道 。 此外，第一用户单元的特征在于第一颜色代码和第一通话组ID。 第一用户单元还检查来自具有第二颜色代码和第二通话组ID的第二用户单元的语音传输的信道上的语音传输。 如果第一颜色代码和第二颜色代码相匹配，并且如果第一通话组ID和第二通话组匹配，则允许第一用户单元访问用于语音传输的信道，即使该信道正在被第二代码和第二通话组用于语音传输 用户单位。
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7.发明授权System and method for interrupting communications within a communication system 有权用于中断通信系统内的通信的系统和方法公开(公告)号：US09313824B2
公开(公告)日：2016-04-12
申请号：US12533219
申请日：2009-07-31
CPC分类号： H04W76/066 , H04W76/14 , H04W76/36 , H04W76/45
摘要： A method for interrupting active communications within a communication network, the method comprising in one embodiment: operating a communication device to terminate communication activity in response to receiving an interrupt request from an interrupting device; operating a repeater to wake up and initiate message communication activity in response to receiving a base station downlink activation message from the interrupting device; and operating the interrupting device to transmit one or more messages on a receive frequency of the repeater. The method for interrupting active communications within a communication network comprising in an alternate embodiment: operating a repeater, in response to receiving an interrupt request from an interrupting device, to clear each channel hosted by the repeater: informing the interrupting device by the repeater that all channels have been cleared; de-keying the repeater; operating the interrupting device to transmit one or more communications on a transmission frequency of the repeater.
摘要翻译： 一种用于中断通信网络内的主动通信的方法，所述方法包括在一个实施例中：响应于从中断设备接收到中断请求，操作通信设备以终止通信活动; 操作中继器以响应于从所述中断设备接收到基站下行链路激活消息而唤醒并发起消息通信活动; 以及操作所述中断装置以在所述中继器的接收频率上发送一个或多个消息。 用于中断在通信网络内的主动通信的方法，包括在替代实施例中：响应于接收到来自中断设备的中断请求来操作中继器，以清除由所述中继器托管的每个信道：通过所述中继器通知所述中断设备， 渠道已经清理; 取消键控中继器; 操作中断装置以在中继器的传输频率上发送一个或多个通信。
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8.发明授权Channel structure for non-contention based windows and contention based random access requests 有权基于非竞争的窗口和基于竞争的随机访问请求的通道结构公开(公告)号：US09167599B2
公开(公告)日：2015-10-20
申请号：US12888177
申请日：2010-09-22
申请人： David G. Wiatrowski , Dipendra M. Chowdhary , Thomas B. Bohn , Puneet K. Puri , Roopak M. Ingole , Delia M. Marchosky , Abhishek Kumar
发明人： David G. Wiatrowski , Dipendra M. Chowdhary , Thomas B. Bohn , Puneet K. Puri , Roopak M. Ingole , Delia M. Marchosky , Abhishek Kumar
IPC分类号： H04W64/00 , H04W74/02 , G01S5/14 , H04B7/26 , H04W8/22 , H04W36/06 , H04W72/04 , H04W74/04 , H04W74/08 , H04W84/04
CPC分类号： H04W74/02 , G01S5/14 , H04B7/2606 , H04W8/22 , H04W36/06 , H04W56/0045 , H04W64/00 , H04W72/0413 , H04W72/042 , H04W74/04 , H04W74/0833 , H04W84/047
摘要： Methods of communicating location information from a subscriber to a repeater are described. The subscriber switches from a working channel to a data revert channel, transmits a request for a periodic or one-time window to transmit an update, and determines from grant information in the response announcement the allocated window and frame before switching back to the working channel. Before the allocated time, the subscriber switches to the data revert channel, confirms whether it remains scheduled to transmit the update from a repeater announcement, and if so transmits the location update in either the current or reserved window. The announcements from the repeater contain the identity of the next window and frame and the subscriber reserved to use the window in addition to grant information. The subscribers may or may not be time-aligned and the data and data revert channels may or may not be synchronized.
摘要翻译： 描述从订户到中继器传送位置信息的方法。 用户从工作信道切换到数据恢复信道，发送周期性或一次性窗口的请求以发送更新，并且在切换回工作信道之前从响应通知中的授权信息确定分配的窗口和帧 。 在分配时间之前，用户切换到数据恢复信道，确认它是否保持调度以从中继器通知发送更新，如果是，则在当前或预留的窗口中发送位置更新。 来自中继器的公告包含下一个窗口和帧的标识，并且除了授予信息之外还保留用于使用窗口的用户。 用户可以或可以不是时间对齐的，并且数据和数据还原信道可以同步也可以不同步。
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9.发明授权公开(公告)号：US08976776B2
公开(公告)日：2015-03-10
申请号：US13602752
申请日：2012-09-04
CPC分类号： H04W56/0085 , H04L7/041
摘要： In operation, a transmitting device selects a synchronization pattern associated with the desired timeslot that is at least mutually exclusive from synchronization patterns associated with other timeslots on the same frequency in the system. Once selected, the transmitting device transmits a burst embedding the synchronization pattern that was selected, where appropriate. If the receiving device detects the synchronization pattern, it immediately synchronizes with the timeslot with confidence that it is synchronizing to the desired timeslot by using sets of synchronization patterns associated with the desired timeslot that are at least mutually exclusive from synchronization patterns associated with the other timeslots on the same frequency.
摘要翻译： 在操作中，发送设备选择与期望时隙相关联的同步模式，该期望时隙至少与系统中相同频率上与其他时隙相关联的同步模式相互排斥。 一旦选择，发送装置在适当的情况下发送嵌入所选择的同步模式的突发。 如果接收设备检测到同步模式，则通过使用与期望时隙相关联的同步模式集合，它们随时与时隙同步，立即与时隙同步，所述同步模式至少与与其它时隙相关联的同步模式互斥 在同一频率
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公开(公告)号：US08503409B2
公开(公告)日：2013-08-06
申请号：US12761023
申请日：2010-04-15
IPC分类号： H04B7/212
CPC分类号： H04W74/0808 , H04W72/0446
摘要： A method for direct mode channel access in a time division multiple access (TDMA) system includes: assigning a radio operating in the TDMA system to transmission on a first time slot of a direct mode channel; initiating a request for a direct mode transmission on the direct mode channel; determining, by the radio, whether there is communication activity present in the first time slot or a second time slot of the direct mode channel; aligning, by the radio, to a selected slot timing based on the determining step; and transmitting, by the radio, with the selected slot timing on the first time slot.
摘要翻译： 一种用于时分多址（TDMA）系统中的直接模式信道接入的方法包括：将在TDMA系统中操作的无线电分配给在直接模式信道的第一时隙上的传输; 在直接模式信道上发起对直接模式传输的请求; 通过无线电确定在直接模式信道的第一时隙或第二时隙中是否存在通信活动; 基于确定步骤，通过无线电对准所选择的时隙定时; 以及由所述无线电装置在所述第一时隙上与所选择的时隙定时进行发送。
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