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31. 发明授权

US08599826B2 Method for synchronizing direct mode time division multiple access (TDMA) transmissions 有权
标题翻译：用于同步直接模式时分多址（TDMA）传输的方法
公开(公告)号：US08599826B2
公开(公告)日：2013-12-03
申请号：US12760787
申请日：2010-04-15
申请人： Dipendra M. Chowdhary , David G. Wiatrowski
发明人： Dipendra M. Chowdhary , David G. Wiatrowski
IPC分类号： H04J3/06
CPC分类号： H04W56/0015 , H04J3/0641 , H04J3/0652
摘要： A method for synchronizing the direct mode TDMA transmission of a set of radios by following a selected radio as the leader includes: receiving, by a radio, a communication from an other radio; identifying, by the radio, a leader according to a leadership election rule using the received communication from the other radio and a current leader information; setting, by the radio, the identified leader as its leader; and synchronizing, by the radio, a time slot boundary with a time slot boundary defined by the leader.
摘要翻译：一种用于通过跟随选择的无线电作为前导者来同步一组无线电的直接模式TDMA传输的方法包括：通过无线电接收来自另一无线电的通信; 根据领导选举规则，通过无线电方式确定领导者，使用来自另一无线电台的接收到的通信和当前的领导信息; 以无线电方式确定所领导的领导人为领导人; 并且由无线电装置将时隙边界与由领导者定义的时隙边界同步。

32. 发明授权

US08457104B2 Method for synchronizing direct mode time division multiple access (TDMA) transmissions 有权
公开(公告)号：US08457104B2
公开(公告)日：2013-06-04
申请号：US13557903
申请日：2012-07-25
申请人： Dipendra M. Chowdhary , David G. Wiatrowski
发明人： Dipendra M. Chowdhary , David G. Wiatrowski
IPC分类号： H04J3/06
CPC分类号： H04W56/0015 , H04J3/0641 , H04J3/0652
摘要： A method for synchronizing the direct mode TDMA transmission of a set of radios by following a selected radio as the leader includes: receiving, by a radio, a communication from an other radio; identifying, by the radio, a leader according to a leadership election rule using the received communication from the other radio and a current leader information; setting, by the radio, the identified leader as its leader; and synchronizing, by the radio, a time slot boundary with a time slot boundary defined by the leader.

33. 发明授权

US08279991B2 Method of efficiently synchronizing to a desired timeslot in a time division multiple access communication system 有权
标题翻译：在时分多址通信系统中有效同步到期望时隙的方法
公开(公告)号：US08279991B2
公开(公告)日：2012-10-02
申请号：US12331189
申请日：2008-12-09
申请人： David G. Wiatrowski , Dipendra M. Chowdhary , Thomas B. Bohn
发明人： David G. Wiatrowski , Dipendra M. Chowdhary , Thomas B. Bohn
IPC分类号： H04L7/04
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

34. 发明授权

US08150438B2 Method for initiating a communication while participating in another communication 有权
标题翻译：在参与另一个通信时发起通信的方法
公开(公告)号：US08150438B2
公开(公告)日：2012-04-03
申请号：US12433754
申请日：2009-04-30
申请人： Thomas B. Bohn , Dipendra M. Chowdhary , Satyanarayan R. Panpaliya , David G. Wiatrowski
发明人： Thomas B. Bohn , Dipendra M. Chowdhary , Satyanarayan R. Panpaliya , David G. Wiatrowski
IPC分类号： H04B7/00
CPC分类号： H04W84/08 , H04W4/10 , H04W76/10 , H04W76/45
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。

35. 发明申请

US20110255527A1 METHOD FOR SYNCHRONIZING DIRECT MODE TIME DIVISION MULTIPLE ACCESS (TDMA) TRANSMISSIONS 有权
标题翻译：用于同步直接模式时分多址（TDMA）传输的方法
公开(公告)号：US20110255527A1
公开(公告)日：2011-10-20
申请号：US12760787
申请日：2010-04-15
申请人： Dipendra M. Chowdhary , David G. Wiatrowski
发明人： Dipendra M. Chowdhary , David G. Wiatrowski
IPC分类号： H04B7/212
CPC分类号： H04W56/0015 , H04J3/0641 , H04J3/0652
摘要： A method for synchronizing the direct mode TDMA transmission of a set of radios by following a selected radio as the leader includes: receiving, by a radio, a communication from an other radio; identifying, by the radio, a leader according to a leadership election rule using the received communication from the other radio and a current leader information; setting, by the radio, the identified leader as its leader; and synchronizing, by the radio, a time slot boundary with a time slot boundary defined by the leader.
摘要翻译：一种用于通过跟随选择的无线电作为前导者来同步一组无线电的直接模式TDMA传输的方法包括：通过无线电接收来自另一无线电的通信; 根据领导选举规则，通过无线电方式确定领导者，使用来自另一无线电台的接收到的通信和当前的领导信息; 以无线电方式确定所领导的领导人为领导人; 并且由无线电装置将时隙边界与由领导者定义的时隙边界同步。

36. 发明申请

US20100279726A1 METHOD FOR INITIATING A COMMUNICATION WHILE PARTICIPATING IN ANOTHER COMMUNICATION 有权
标题翻译：在其他通信中启动通信的方法
公开(公告)号：US20100279726A1
公开(公告)日：2010-11-04
申请号：US12433754
申请日：2009-04-30
申请人： Thomas B. Bohn , Dipendra M. Chowdhary , Satyanarayan R. Panpaliya , David G. Wiatrowski
发明人： Thomas B. Bohn , Dipendra M. Chowdhary , Satyanarayan R. Panpaliya , David G. Wiatrowski
IPC分类号： H04B7/00
CPC分类号： H04W84/08 , H04W4/10 , H04W76/10 , H04W76/45
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。

37. 发明申请

US20100098254A1 METHOD AND DEVICE FOR SENDING ENCRYPTION PARAMETERS 有权
标题翻译：用于发送加密参数的方法和设备
公开(公告)号：US20100098254A1
公开(公告)日：2010-04-22
申请号：US12253411
申请日：2008-10-17
申请人： Dipendra M. Chowdhary , John P. Belmonte , David G. Wiatrowski
发明人： Dipendra M. Chowdhary , John P. Belmonte , David G. Wiatrowski
IPC分类号： H04L9/00
CPC分类号： H04K1/00 , H04L9/065 , H04L63/0428 , H04L63/06 , H04L2209/34 , H04L2209/80
摘要： A transmitting device encrypts DMR voice superframes using encryption parameters and sends the encryption parameters in at least one of the voice superframes by: identifying a selected number of bits from a plurality of vocoder frames the voice superframe; replacing each of the identified bits with a corresponding bit of a first encryption parameter; placing at least one encryption parameter in an embedded signaling field of the voice superframe; and transmitting the voice superframe with the encryption parameters to a receiving device. The receiving device extracts the encryption parameters, which can be a key identifier, an algorithm identifier, and an initialization vector for use in decrypting messages from the transmitting device.
摘要翻译：发送设备使用加密参数对DMR语音超帧进行加密，并且通过以下方式发送加密参数：至少一个语音超帧：从语音超帧的多个声码器帧中识别选定数量的比特; 用第一加密参数的对应位替换所识别的比特中的每一个; 在语音超帧的嵌入式信令字段中放置至少一个加密参数; 以及将具有加密参数的语音超帧传送到接收设备。接收装置提取可以是密钥标识符的加密参数，算法标识符和用于解密来自发送装置的消息的初始化向量。

38. 发明申请

US20100086092A1 Method of Efficiently Synchronizing to a Desired Timeslot in a Time Division Multiple Access Communication System 有权
标题翻译：在时分多址通信系统中有效同步到期望时隙的方法
公开(公告)号：US20100086092A1
公开(公告)日：2010-04-08
申请号：US12331189
申请日：2008-12-09
申请人： David G. Wiatrowski , Dipendra M. Chowdhary , Thomas B. Bohn
发明人： David G. Wiatrowski , Dipendra M. Chowdhary , Thomas B. Bohn
IPC分类号： H04L7/04 , H04W56/00
CPC分类号： H04W56/0085 , H04L7/041
摘要： The time required for the receiving device to synchronize to a desired timeslot is reduced. 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. Using synchronization pattern associated with the desired timeslot that is at least mutually exclusive from synchronization patterns associated with the other timeslots on the same frequency also improves spectral efficiency in direct-mode transmissions, thus allowing more than one subscriber unit to simultaneously transmit in direct mode on a frequency without interfering with other transmissions on the frequency.
摘要翻译：接收设备与期望时隙同步所需的时间减少。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，则它立即与时隙同步，使其与期望的时隙同步。使用与期望时隙相关联的同步模式，其至少与同一频率上的其他时隙相关联的同步模式互斥，也提高了直接模式传输中的频谱效率，从而允许多个用户单元以直接模式同时发送一个频率，而不会干扰频率上的其他传输。

39. 发明申请

US20090175257A1 METHOD AND DEVICE FOR DYNAMICALLY CHANGING PREAMBLE DURATION 审中-公开
标题翻译：用于动态改变前置时间的方法和装置
公开(公告)号：US20090175257A1
公开(公告)日：2009-07-09
申请号：US11969269
申请日：2008-01-04
申请人： John P. Belmonte , Dipendra M. Chowdhary , Kevin M. Ittner , David G. Wiatrowski
发明人： John P. Belmonte , Dipendra M. Chowdhary , Kevin M. Ittner , David G. Wiatrowski
IPC分类号： H04L29/02
CPC分类号： H04L27/2607 , H04L1/18
摘要： A method and device dynamically changes preamble duration of a message. A message is transmitted over a forward channel to a target device, wherein the message includes a preamble of a predetermined time duration. A reverse channel is monitored for a confirmation message from the target device. The transmission of the preamble is stopped before expiration of the predetermined time duration upon receiving the confirmation message over the reverse channel.
摘要翻译：方法和设备动态地改变消息的前导码持续时间。消息通过正向信道发送到目标设备，其中消息包括预定持续时间的前导码。监视来自目标设备的确认消息的反向信道。在通过反向信道接收到确认消息之后，前导码的传输在预定持续时间期满之前停止。

40. 发明授权

US07489675B2 Method for indicating padding in a digital mobile radio system 有权
标题翻译：用于在数字移动无线电系统中指示填充的方法
公开(公告)号：US07489675B2
公开(公告)日：2009-02-10
申请号：US11530660
申请日：2006-09-11
申请人： David G. Wiatrowski , Dipendra M. Chowdhary
发明人： David G. Wiatrowski , Dipendra M. Chowdhary
IPC分类号： H04J3/24
CPC分类号： H04W28/06 , H04W48/08
摘要： A method for indicating padding in a digital mobile radio is disclosed. The method comprises receiving a packet comprising a header and a defined length blocks portion. The defined length blocks portion comprises payload and a padding portion. The padding portion comprises padding and a payload pad count field. The method further indicates by a pad field in the header to examine the payload pad count field to determine an amount of padding for the padding portion of the defined length blocks portion. The method further indicates an amount of padding for the padding portion in the payload pad count field.
摘要翻译：公开了一种用于指示数字移动无线电中的填充的方法。该方法包括接收包括报头和定义的长度块部分的分组。所定义的长度块部分包括有效载荷和填充部分。填充部分包括填充和有效载荷计数字段。该方法还通过标题中的填充字段来指示有效载荷计数字段以确定用于所定义的长度块部分的填充部分的填充量。该方法还指示有效载荷计数字段中的填充部分的填充量。

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