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1. 发明授权

US08259690B2 System and method for pausing an ongoing transmission in a communication system 有权
标题翻译：用于暂停通信系统中正在进行的传输的系统和方法
公开(公告)号：US08259690B2
公开(公告)日：2012-09-04
申请号：US11753004
申请日：2007-05-24
申请人： David G. Wiatrowski , John P. Belmonte , Dipendra M. Chowdhary , Kevin M. Ittner
发明人： David G. Wiatrowski , John P. Belmonte , Dipendra M. Chowdhary , Kevin M. Ittner
IPC分类号： H04B7/212
CPC分类号： H04W76/36 , H04W72/12
摘要： A system and method for pausing communications from a transmitting radio for a certain period of time in order to allow transmission of other messages. When a first radio determines that a message needs to be transmitted either to a second radio or the transmitting radio, the first radio determines whether there are any available forward channels to transmit the call. If no forward channel is available, the first radio determines a period of time required to transmit the message and sends, on a reverse channel, a “request to pause” signal to the transmitting radio identifying that period of time. Upon receiving the “request to pause” signal, the transmitting radio ceases transmission on the forward channel for the specified period of time, during which time the first radio transmits the message.
摘要翻译：一种用于在发送无线电中暂停通信一段时间以便允许发送其他消息的系统和方法。当第一无线电确定消息需要被发送到第二无线电或发送无线电时，第一无线电确定是否存在任何可用的前向信道来发送呼叫。如果没有前向信道可用，则第一无线电确定发送消息所需的时间段，并且在反向信道上发送标识该时间段的发送无线电信号的“请求暂停”信号。在接收到“请求暂停”信号时，发送无线电终止指定时间段的前向信道的发送，在此期间第一无线电发送消息。

2. 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。

3. 发明授权

US08139613B2 Method and device for channel inspection in a communication system 有权
标题翻译：通信系统中通道检测的方法和装置
公开(公告)号：US08139613B2
公开(公告)日：2012-03-20
申请号：US12253380
申请日：2008-10-17
申请人： John P. Belmonte , Dipendra M. Chowdhary , Yueh Ching Chung , Hun Weng Khoo , David G. Wiatrowski
发明人： John P. Belmonte , Dipendra M. Chowdhary , Yueh Ching Chung , Hun Weng Khoo , David G. Wiatrowski
IPC分类号： H04J3/06
CPC分类号： H04W48/16
摘要： To perform channel inspection, a wireless communication device conducts a full inspection on a first channel carrying a first signal that includes: determining a location of a first synchronization message; and determining whether the first signal is of interest. Upon determining that the first signal is not of interest, the first channel is marked, wherein the marking includes remembering the location of the first synchronization message. The device leaves the first channel and determines an expected location of a second synchronization message on the first channel based on the location of the first synchronization message. Upon returning to the first channel which carries a second signal, the communication device conduct a partial inspection that includes: detecting whether the second synchronization message is present at the expected location, wherein the presence of the second synchronization message indicates that the second signal is not of interest.
摘要翻译：为了执行信道检查，无线通信设备对承载第一信号的第一信道进行全面检查，该第一信道包括：确定第一同步消息的位置; 以及确定所述第一信号是否是感兴趣的。当确定第一信号不感兴趣时，标记第一信道，其中标记包括记住第一同步消息的位置。设备离开第一信道并且基于第一同步消息的位置在第一信道上确定第二同步消息的预期位置。在返回到携带第二信号的第一信道时，通信设备进行部分检查，其包括：检测第二同步消息是否存在于预期位置，其中存在第二同步消息指示第二信号不是出于兴趣。

4. 发明授权

US08462766B2 Methods and apparatus for diffusing channel timing among subscriber units in TDMA direct mode 有权
标题翻译： TDMA直接模式用户单元漫游信道定时的方法和装置
公开(公告)号：US08462766B2
公开(公告)日：2013-06-11
申请号：US13042342
申请日：2011-03-07
申请人： David G. Wiatrowski , John P. Belmonte , Dipendra M. Chowdhary , Yueh Ching Chung
发明人： David G. Wiatrowski , John P. Belmonte , Dipendra M. Chowdhary , Yueh Ching Chung
IPC分类号： H04J3/06
CPC分类号： H04W56/004 , H04B7/2643 , H04W92/18
摘要： A method for diffusing channel timing among a plurality of subscriber units operating in TDMA Direct Mode, wherein the method includes: receiving, from a second one of the subscriber units operating in the TDMA Direct Mode, a first message; determining first channel timing from the received message; determining whether the received first channel timing is correct, wherein the determining is based at least on comparing a generation of the first subscriber unit with a generation of the second subscriber unit; when the received first channel timing is correct, starting a random delay; upon expiration of the random delay, transmitting a first forced propagation message to propagate the first channel timing to at least a third one of the subscriber units operating in the TDMA Direct Mode and having a higher generation than the generations of the first and the second subscriber units.
摘要翻译：一种用于在TDMA直接模式下操作的多个用户单元之中扩散信道定时的方法，其中该方法包括：从以TDMA直接模式操作的第二用户单元接收第一消息; 从所接收的消息确定第一信道定时; 确定所接收的第一信道定时是否正确，其中所述确定至少基于将所述第一用户单元的生成与所述第二用户单元的生成进行比较; 当接收的第一信道定时正确时，开始随机延迟; 在随机延迟到期时，发送第一强制传播消息以将第一信道定时传播到以TDMA直接模式操作的用户单元中的至少第三个，并且具有比第一和第二用户的代单位。

5. 发明授权

US08422679B2 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：US08422679B2
公开(公告)日：2013-04-16
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： H04L29/06
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。

6. 发明授权

US08078209B2 Method and device for controlling access to a channel in a conventional multi-site communication system 有权
标题翻译：用于控制对常规多站点通信系统中的信道的访问的方法和设备
公开(公告)号：US08078209B2
公开(公告)日：2011-12-13
申请号：US12253353
申请日：2008-10-17
申请人： Dipendra M. Chowdhary , John P. Belmonte , Sanjaykumar S. Karpoor , Hemant J. Patel , David G. Wiatrowski
发明人： Dipendra M. Chowdhary , John P. Belmonte , Sanjaykumar S. Karpoor , Hemant J. Patel , David G. Wiatrowski
IPC分类号： H04Q7/20
CPC分类号： H04W72/005
摘要： A repeater receives and repeats, on a multi-site channel, a sequence of control and media transmissions included in a session, wherein the session has a plurality of participants. While repeating these transmissions, the repeater further detects, from at least one of the transmissions, a start of the session and a type of the session. Based on the type of the session, the repeater determines whether to perform an arbitration during the session to control access to the multi-site channel, and restricts each performed arbitration to only transmissions received from the participants to the session. In addition, after repeating at least one of the control transmissions, the repeater sets a hang time having a duration that is determined based on a type of the transmission preceding the setting of the hang time.
摘要翻译：中继器在多站点信道上接收并重复包括在会话中的一系列控制和媒体传输，其中会话具有多个参与者。在重复这些传输的同时，中继器还从至少一个传输中检测会话的开始和会话的类型。基于会话的类型，中继器确定在会话期间是否执行仲裁以控制对多站点信道的访问，并且将每个执行的仲裁仅限于从参与者接收到会话的传输。此外，在重复控制传输中的至少一个之后，中继器设置具有基于在设置挂起时间之前的传输类型确定的持续时间的挂起时间。

7. 发明授权

US08045982B2 Methods for site selection in a multi-site communication system 有权
标题翻译：多站点通信系统中站点选择的方法
公开(公告)号：US08045982B2
公开(公告)日：2011-10-25
申请号：US12253478
申请日：2008-10-17
申请人： Hun Weng Khoo , John P. Belmonte , Dipendra M. Chowdhary , Yueh Ching Chung , David G. Wiatrowski
发明人： Hun Weng Khoo , John P. Belmonte , Dipendra M. Chowdhary , Yueh Ching Chung , David G. Wiatrowski
IPC分类号： H04W4/00
CPC分类号： H04W48/16 , H04W48/20
摘要： A device detects a first signal on a channel that is one of a plurality of channels arranged in a first order on a list, with each channel being associated with a different site in a multi-site communication system. Upon detecting the first signal, the device attempts to measure and record signal strength of a signal at each channel on the list based on the first order beginning with the detected first signal, and selects as a home site the site associated with the channel having the signal with the highest recorded signal strength. The device rearranges the channels on the list into a second order based on the recorded signal strengths with the home site channel at the top. If necessary, the radio attempts to awaken its repeaters one after another based on the second order until a repeater is found to transmit a signal.
摘要翻译：设备检测作为在列表中以一级排列的多个信道之一的信道上的第一信号，其中每个信道与多站点通信系统中的不同站点相关联。在检测到第一信号时，设备基于从检测到的第一信号开始的第一阶段尝试测量和记录信号在列表上的每个信道的信号强度，并且选择与具有该信道的信道相关联的站点作为归属站点具有最高记录信号强度的信号。基于记录的信号强度，设备将顶部的主站通道重新排列列表中的通道，使之成为第二个顺序。如果需要，无线电基于第二次尝试一个接一个唤醒其中继器，直到发现一个中继器发送一个信号。

8. 发明申请

US20120327928A1 METHOD AND APPARATUS FOR TRACKING A CHANNEL TIMING MESSAGE AND SUPPORTING CHANNEL SCANNING IN A DIGITAL MOBILE RADIO SYSTEM 有权
标题翻译：跟踪数字移动无线电系统中的信道定时消息和支持信道扫描的方法和装置
公开(公告)号：US20120327928A1
公开(公告)日：2012-12-27
申请号：US13166151
申请日：2011-06-22
申请人： David G. Wiatrowski , John P. Belmonte , Dipendra M. Chowdhary , Yueh Ching Chung
发明人： David G. Wiatrowski , John P. Belmonte , Dipendra M. Chowdhary , Yueh Ching Chung
IPC分类号： H04W56/00
CPC分类号： H04W56/0015
摘要： A method and apparatus for enabling a radio to track channel timing and support channel scanning A non-leading radio operating on a communications channel, determines a diffusion period during which channel timing is to be propagated from a leading radio to non-leading radios operating on the communications channel. The non-leading radio implements a first scanning pattern during the diffusion period to scan a CT designated channel for a control timing message with a timing signal sent from the leading radio. The first scanning pattern involves scanning the CT designated channel during every other scan interval and scanning non-priority channels and priority channels during scan intervals not used on the CT designated channel.
摘要翻译：一种用于使得无线电能够跟踪信道定时并支持信道扫描的方法和装置在通信信道上操作的非前置无线电确定扩频周期，在该扩散周期期间，将信道定时从主导无线电传播到非导频无线电，通信通道。非前置无线电在扩散周期期间实施第一扫描模式，以从具有从前置无线电发送的定时信号扫描CT指定信道用于控制定时消息。第一扫描模式涉及在每隔一个扫描间隔期间扫描CT指定信道，并且在CT指定信道上未使用的扫描间隔期间扫描非优先级信道和优先信道。

9. 发明授权

US08208393B2 Method and device for channel inspection in a communication system 有权
标题翻译：通信系统中通道检测的方法和装置
公开(公告)号：US08208393B2
公开(公告)日：2012-06-26
申请号：US12253391
申请日：2008-10-17
申请人： John P. Belmonte , Dipendra M. Chowdhary , Yueh Ching Chung , Hun Weng Khoo , David G. Wiatrowski
发明人： John P. Belmonte , Dipendra M. Chowdhary , Yueh Ching Chung , Hun Weng Khoo , David G. Wiatrowski
IPC分类号： H04J1/16
CPC分类号： H04B17/309
摘要： To perform a channel inspection, a wireless communication device: monitors a common announcement channel (CACH) until detecting that a first set of identified parameters associated with a signal on a first channel matches a second set of known parameters for the first channel; performs an inspection on the first channel to determine whether the signal is of interest; and when the signal is not of interest, marks the first channel to prevent another inspection from being performed on the first channel until after the channel mark is removed. The communication device then leaves the first channel and continues to monitor the CACH for a change in the first set of identified parameters or an indication of an idle first channel, wherein the communication device removes the channel mark on the first channel.
摘要翻译：为了执行信道检查，无线通信设备：监视公共通告信道（CACH），直到检测到与第一信道上的信号相关联的第一组已识别参数与第一信道的第二组已知参数匹配为止; 对第一通道执行检查以确定信号是否感兴趣; 并且当信号不感兴趣时，标记第一通道以防止在第一通道上执行另一次检查，直到通道标记被移除为止。然后，通信设备离开第一信道并继续监视CACH，以改变第一组已识别参数或空闲第一信道的指示，其中通信设备去除第一信道上的信道标记。

10. 发明授权

US07979068B2 Method and device for traversing a scan list in a communication system 有权
标题翻译：用于遍历通信系统中的扫描列表的方法和设备
公开(公告)号：US07979068B2
公开(公告)日：2011-07-12
申请号：US12253365
申请日：2008-10-17
申请人： John P. Belmonte , Dipendra M. Chowdhary , Yueh Ching Chung , Hun Weng Khoo , David G. Wiatrowski
发明人： John P. Belmonte , Dipendra M. Chowdhary , Yueh Ching Chung , Hun Weng Khoo , David G. Wiatrowski
IPC分类号： H04W4/00
CPC分类号： H04W48/16
摘要： A wireless communication device accesses a scan list that includes a plurality of scan members sorted at least by receive frequency and attempts to detect whether a call of interest exists on a receive frequency by performing a group scan for a group of scan members that are marked scan undone and that have the same corresponding receive frequency, wherein the group includes a first scan member and at least one other scan member. The group scan includes inspecting the receive frequency to obtain inspection results; using the inspection results to determine that there is no signal on the receive frequency having signal attributes that match a set of attributes for the first scan member; and using the inspection results to evaluate at least one of the other scan members in the group to determine whether there is a corresponding signal of interest on the receive frequency.
摘要翻译：无线通信设备访问包括至少按接收频率排序的多个扫描成员的扫描列表，并尝试通过对被标记为扫描的一组扫描成员进行组扫描来检测是否存在接收频率上的感兴趣的呼叫具有相同的相应接收频率，其中所述组包括第一扫描构件和至少一个其它扫描构件。组扫描包括检查接收频率以获得检查结果; 使用检查结果来确定在具有与第一扫描构件的一组属性匹配的信号属性的接收频率上没有信号; 以及使用所述检查结果来评估所述组中的至少一个其他扫描成员以确定在接收频率上是否存在对应的感兴趣的信号。

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