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1. 发明申请

US20140057645A1 METHOD AND DEVICE FOR AUTOMATIC CREATION OF A LOCATION-BASED TALK GROUP CALL WITH REDUCED MESSAGING OVERHEAD 有权
标题翻译：用于自动创建基于位置的群组呼叫的方法和设备，具有减少的消息传递
公开(公告)号：US20140057645A1
公开(公告)日：2014-02-27
申请号：US13590318
申请日：2012-08-21
申请人： DIPENDRA M. CHOWDHARY , THOMAS B. BOHN , DAVID G. WIATROWSKI
发明人： DIPENDRA M. CHOWDHARY , THOMAS B. BOHN , DAVID G. WIATROWSKI
IPC分类号： H04W4/02
CPC分类号： H04W4/021 , H04L69/22 , H04W4/08 , H04W76/40 , H04W84/08
摘要： Disclosed is a method of automatic establishment of a location-based talk group call with reduced messaging overhead. The initiating device may be a subscriber unit (SU). The SU determines a geographic reference location and generates location data representative of the location. The SU broadcasts a location-based talk group call header including the location data and including a location-based talk group call identifier field set to cause other SUs receiving the call header to receive and output subsequent data associated with the call header responsive to determining that its current geographic location satisfies the location criterion of the call. The location criterion may be fully determined by the initiating SU and specified in the call header, and may take the form of a specified radius that extends from the geographic reference location represented in the call header.
摘要翻译：公开了一种以减少的消息开销自动建立基于位置的通话组呼叫的方法。发起设备可以是用户单元（SU）。 SU确定地理参考位置并生成表示位置的位置数据。 SU广播包括位置数据的基于位置的通话组呼叫头部，并且包括设置的基于位置的通话组呼叫标识符字段，以使得接收到呼叫头部的其他SU接收并输出与呼叫头部相关联的后续数据，以响应于确定其当前地理位置满足呼叫的位置标准。位置标准可以由发起的SU完全确定并在呼叫头部中指定，并且可以采取从呼叫头部中表示的地理参考位置延伸的指定半径的形式。

2. 发明申请

US20130036238A1 METHOD AND SYSTEM FOR COMPRESSING LOCATION DATA OF A RADIO FOR OVER-THE-AIR TRANSMISSION 有权
公开(公告)号：US20130036238A1
公开(公告)日：2013-02-07
申请号：US13195611
申请日：2011-08-01
申请人： DIPENDRA M. CHOWDHARY , THOMAS B. BOHN , TIANFANG LIU , DAVID G. WIATROWSKI
发明人： DIPENDRA M. CHOWDHARY , THOMAS B. BOHN , TIANFANG LIU , DAVID G. WIATROWSKI
IPC分类号： G06F15/16
CPC分类号： H04L69/04 , G01S5/0018 , G01S5/0284
摘要： Disclosed are methods and systems for compressing location data of a radio for over-the-air transmission. A method includes obtaining raw latitude and raw longitude coordinates reflecting a current location of the client device, the raw latitude coordinate represented by x number of bits and the raw longitude coordinate represented by y number of bits. The raw latitude coordinate is truncated by removing n number of most significant bits from the raw latitude coordinate to create a compressed latitude coordinate. The raw longitude coordinate is truncated by removing m number of most significant bits from the raw longitude coordinate to create a compressed longitude coordinate, where m varies as a function of the value of the raw latitude coordinate. The compressed longitude and compressed latitude coordinates are then transmitted to another network device for decompression and use as an indication of the client device's absolute location.

3. 发明申请

US20100087199A1 METHOD FOR TRUNKING RADIO FREQUENCY RESOURCES 有权
标题翻译：用于无线射频资源的方法
公开(公告)号：US20100087199A1
公开(公告)日：2010-04-08
申请号：US12331180
申请日：2008-12-09
申请人： DIPENDRA M. CHOWDHARY , DAVID G. WIATROWSKI , THOMAS B. BOHN
发明人： DIPENDRA M. CHOWDHARY , DAVID G. WIATROWSKI , THOMAS B. BOHN
IPC分类号： H04W72/00 , H04B7/14
CPC分类号： H04W72/005 , H04W4/10 , H04W24/00 , H04W72/00 , H04W76/10 , H04W76/45 , H04W84/047
摘要： A subscriber unit monitors a first channel currently serving as a rest channel for the system, wherein the channel currently serving as the rest channel for the system is monitored by subscribers that are idle in the system. The subscriber unit determines that a first call is being initiated on the first channel. If the first call is not of interest, the subscriber unit ceases to monitor the first channel, and monitors a second channel that will serve as the rest channel for the system when the first call starts on the first channel. If the first call is of interest, the subscriber unit participates in the first call on the first channel, and before or after the first call ends, participates in a second call on a third channel or monitors a channel currently serving as the rest channel for the system when the subscriber unit becomes idle.
摘要翻译：用户单元监视当前用作系统的休息信道的第一信道，其中当前用作系统的休息信道的信道由系统中空闲的用户监视。订户单元确定在第一信道上正在启动第一呼叫。如果第一呼叫不感兴趣，则当第一呼叫在第一信道上开始时，用户单元停止监视第一信道，并且监视将用作系统的休息信道的第二信道。如果第一呼叫是感兴趣的，则用户单元参与第一信道上的第一呼叫，并且在第一呼叫结束之前或之后，在第三信道上参与第二呼叫或监视当前用作休息信道的信道，系统当用户单元变空时。

4. 发明申请

US20130322414A1 METHOD AND APPARATUS FOR CONFIRMING DELIVERY OF GROUP DATA TO RADIO COMMUNICATION DEVICES IN A WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：确定无线通信系统中无线电通信设备的组数据传送方法和装置
公开(公告)号：US20130322414A1
公开(公告)日：2013-12-05
申请号：US13485125
申请日：2012-05-31
申请人： DIPENDRA M. CHOWDHARY , THOMAS B. BOHN , DAVID G. WIATROWSKI
发明人： DIPENDRA M. CHOWDHARY , THOMAS B. BOHN , DAVID G. WIATROWSKI
IPC分类号： H04B7/212 , H04W72/04 , H04J3/00
CPC分类号： H04W4/08 , H04L51/30 , H04L51/38
摘要： A method and apparatus for confirming delivery of group data to a plurality of radio communication devices in a wireless communication system. The wireless communication system includes a plurality of radio communication devices in communication with a sender. In operation, the sender sends group data to the plurality of radio communication devices and further determines a call hang time sufficient to contain a dedicated acknowledgment slot for each of the plurality of radio communication devices. The sender reserves an acknowledgment slot in the determined call hang time for each radio communication device and further sends an acknowledgment polling signal to each radio communication device, where the acknowledgment polling signal identifies the respective acknowledgment slot that is reserved for each radio communication device to acknowledge receipt of the group data. The sender accordingly receives an acknowledgment from the radio communication devices during its respective reserved acknowledgment slot.
摘要翻译：一种在无线通信系统中确认向多个无线电通信设备传送组数据的方法和设备。无线通信系统包括与发送者通信的多个无线电通信设备。在操作中，发送方向多个无线电通信设备发送组数据，并进一步确定足以包含多个无线电通信设备中的每一个的专用确认时隙的呼叫挂起时间。发送方在确定的每个无线电通信设备的呼叫挂起时间中保留一个确认时隙，并且进一步向每个无线电通信设备发送确认轮询信号，其中确认轮询信号标识为每个无线电通信设备保留的相应确认时隙以确认接收组数据。发送者相应地在其相应的保留确认时隙期间从无线电通信设备接收确认。

5. 发明申请

US20130288643A1 METHOD AND APPARATUS FOR RESTRICTING RADIO ACCESS TO A SYSTEM 有权
标题翻译：限制无线电接入系统的方法和装置
公开(公告)号：US20130288643A1
公开(公告)日：2013-10-31
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： H04W12/06 , H04W24/00
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。

6. 发明申请

US20120327927A1 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：US20120327927A1
公开(公告)日：2012-12-27
申请号：US13602752
申请日：2012-09-04
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： 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。

7. 发明申请

US20100085952A1 Method of Communicating which Channel is to be Monitored by Subscriber Units that are Idle in a Communication System 有权
标题翻译：通信系统中空闲的用户单元监控通道的方法
公开(公告)号：US20100085952A1
公开(公告)日：2010-04-08
申请号：US12331137
申请日：2008-12-09
申请人： DAVID G. WIATROWSKI , THOMAS B. BOHN , DIPENDRA M. CHOWDHARY , SATISH R. PANPALIYA , TEJAL S. PATEL , BADARINATH PATIBANDLA
发明人： DAVID G. WIATROWSKI , THOMAS B. BOHN , DIPENDRA M. CHOWDHARY , SATISH R. PANPALIYA , TEJAL S. PATEL , BADARINATH PATIBANDLA
IPC分类号： H04W74/00
CPC分类号： H04W16/26 , H04B7/15542 , H04W76/45
摘要： The present invention discloses, in a two-way radio frequency (RF) communications system having at least one repeater, a plurality of channels, and a plurality of subscriber units, a repeater receives a message that identifies a channel that is selected to serve as a rest channel for the system. The channel that is currently serving as the rest channel for the system is monitored by subscriber units that are idle in the system. If the repeater determines that the channel selected to serve as the rest channel is hosted by the repeater, the repeater periodically transmits an identity of the channel as the channel currently serving as the rest channel on at least the channel.
摘要翻译：本发明公开了一种具有至少一个中继器，多个信道和多个用户单元的双向射频（RF）通信系统，中继器接收标识被选择用作系统的休息通道。当前用作系统的休息信道的信道由在系统中空闲的用户单元监视。如果中继器确定选择用作休息信道的信道由中继器承载，则中继器至少在该信道上周期性地发送作为当前用作休息信道的信道的信道的标识。

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