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公开(公告)号：US08730855B2
公开(公告)日：2014-05-20
申请号：US12976081
申请日：2010-12-22
CPC分类号： H04W56/0085 , H04W76/45
摘要： A method for detecting a channel in a mixed-mode communications system is presented. The channel contains a primary synchronization pattern in a predetermined location within the channel. The primary synchronization pattern is compared against different predetermined channel synchronization patterns to detect a channel. Upon detection of the channel, a look-back channel detector confirms the existence of the channel by using the location of the primary synchronization pattern. Detection and confirmation of the channel may be employed simultaneously to each channel of a multiple-channel direct mode of operation signal. Audio holes may be eliminated in a 2:1 TDMA direct mode operation where both time slots contain signals from two different originating communication devices and the signals have different priority.
摘要翻译： 提出了一种用于在混合模式通信系统中检测信道的方法。 该信道在信道内的预定位置包含主同步模式。 将主同步模式与不同的预定信道同步模式进行比较以检测信道。 在检测到信道时，回溯信道检测器通过使用主同步模式的位置来确认信道的存在。 信道的检测和确认可以同时用于多信道直接操作模式信号的每个信道。 可以在2：1 TDMA直接模式操作中消除音频孔，其中两个时隙都包含来自两个不同始发通信设备的信号，并且信号具有不同的优先级。
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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。
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3.发明授权Method and apparatus for sending a channel timing message in a digital mobile radio system 有权用于在数字移动无线电系统中发送信道定时消息的方法和装置公开(公告)号：US08983513B2
公开(公告)日：2015-03-17
申请号：US12957009
申请日：2010-11-30
CPC分类号： H04W56/0015 , H04W56/0075 , H04W72/1278 , H04W84/20
摘要： A method and apparatus for automatically switching functions associated with a leading radio to another radio on a channel is disclosed. The method includes receiving, from a leading radio by at least one other radio operating on a channel, an associated timing signal via at least one control timing message. Other radios use the timing signal to synchronize transmissions made on the channel. The method also includes receiving, by the other radios, an indication that the leading radio can no longer provide control timing messages. The method further includes maintaining, by each radio on the channel, values for various elements associated with radios operating on the channel and selecting a new leading radio from the other radios based on priorities of the various elements.
摘要翻译： 公开了一种用于将与前置无线电相关联的功能自动切换到信道上的另一无线电的方法和装置。 该方法包括：经由至少一个控制定时消息，从领先的无线电接收通过在信道上操作的至少一个其他无线电的相关定时信号。 其他无线电使用定时信号来同步在信道上进行的传输。 该方法还包括通过其他无线电接收领先的无线电不能再提供控制定时消息的指示。 该方法还包括通过信道上的每个无线电装置维持与在信道上操作的无线电相关联的各种元素的值，并且基于各种元素的优先级从另一个无线电中选择新的前导无线电。
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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
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。
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5.发明申请METHOD AND APPARATUS FOR SENDING A CHANNEL TIMING MESSAGE IN A DIGITAL MOBILE RADIO SYSTEM 有权在数字移动无线电系统中发送信道时序消息的方法和装置公开(公告)号：US20120135765A1
公开(公告)日：2012-05-31
申请号：US12957009
申请日：2010-11-30
IPC分类号： H04W72/00
CPC分类号： H04W56/0015 , H04W56/0075 , H04W72/1278 , H04W84/20
摘要： A method and apparatus for automatically switching functions associated with a leading radio to another radio on a channel is disclosed. The method includes receiving, from a leading radio by at least one other radio operating on a channel, an associated timing signal via at least one control timing message. Other radios use the timing signal to synchronize transmissions made on the channel. The method also includes receiving, by the other radios, an indication that the leading radio can no longer provide control timing messages. The method further includes maintaining, by each radio on the channel, values for various elements associated with radios operating on the channel and selecting a new leading radio from the other radios based on priorities of the various elements.
摘要翻译： 公开了一种用于将与前置无线电相关联的功能自动切换到信道上的另一无线电的方法和装置。 该方法包括：经由至少一个控制定时消息，从领先的无线电接收通过在信道上操作的至少一个其他无线电的相关定时信号。 其他无线电使用定时信号来同步在信道上进行的传输。 该方法还包括通过其他无线电接收领先的无线电不能再提供控制定时消息的指示。 该方法还包括通过信道上的每个无线电装置维持与在信道上操作的无线电相关联的各种元素的值，并且基于各种元素的优先级从另一个无线电中选择新的前导无线电。
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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。
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7.发明授权公开(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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8.发明授权Methods and apparatus for diffusing channel timing among subscriber units in TDMA direct mode 有权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
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。
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9.发明授权Method and apparatus for automatically determining a communication range status of communicating radios 有权用于自动确定通信无线电的通信范围状态的方法和装置公开(公告)号：US09232382B2
公开(公告)日：2016-01-05
申请号：US13485148
申请日：2012-05-31
CPC分类号： H04W8/005
摘要： A method is disclosed for determining a connectivity status of radios in a coverage group. Each coverage group includes radios configured to transmit and receive range messages on a channel and a timeslot. Each radio in the coverage group is configured to generate a range message and to transmit the range message to each other radio in the coverage group. Each radio in the coverage group is also configured to receive, from each other radio in the coverage group, a range message generated by each other radio. Based on the range message received from each other radio, each radio is configured to determine bi-directional connectivity between the receiving radio and the radios that sent the D-ARTS messages. The determined bi-directional connectivity status is between each radio and each of at least two other radios in the coverage group.
摘要翻译： 公开了一种用于确定覆盖组中无线电的连接状态的方法。 每个覆盖组包括被配置为在信道和时隙上发送和接收范围消息的无线电。 覆盖组中的每个无线电设备被配置为生成范围消息并且将范围消息发送到覆盖组中的彼此无线电。 覆盖组中的每个无线电还被配置为从覆盖组中的彼此的无线电接收由彼此无线电产生的范围消息。 基于从每个其他无线电接收的范围消息，每个无线电被配置为确定发送D-ARTS消息的接收无线电与无线电之间的双向连接。 所确定的双向连接状态在覆盖组中的每个无线电和至少两个其他无线电中的每一个之间。
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10.发明申请METHOD AND APPARATUS FOR TRACKING A CHANNEL TIMING MESSAGE AND SUPPORTING CHANNEL SCANNING IN A DIGITAL MOBILE RADIO SYSTEM 有权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
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。
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