公开(公告)号：US20160057782A1

公开(公告)日：2016-02-25

申请号：US14933713

申请日：2015-11-05

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： SATYANARAYAN R. PANPALIYA ,  DIPENDRA M. CHOWDHARY ,  SANJAYKUMAR S. KARPOOR ,  BADARINATH PATIBANDLA ,  DAVID G. WIATROWSKI

IPC: H04W74/08 ,  H04W72/14 ,  H04W72/12 ,  H04W76/02

CPC classification number: H04W74/0816 ,  H04W72/1242 ,  H04W72/14 ,  H04W76/14 ,  H04W76/18 ,  H04W92/18

Abstract: A process for resolving call collisions in a digital conventional direct mode includes monitoring a direct mode communication channel for transmissions from other direct mode radios in the plurality of direct mode radios. In response to detecting a new call request: identifying a last radio to transmit on the direct mode channel, transmitting a new call request for receipt by the last direct mode radio to transmit, monitoring the direct mode channel for a response from the last radio to transmit, and if a call grant granting the new call request is received from the last radio to transmit, initiating the new direct mode call on the direct mode communication channel. If the call grant is not received, at least temporarily refraining from initiating the new direct mode call.

Abstract translation: 用于在数字常规直接模式中解决呼叫冲突的过程包括监视直接模式通信信道用于来自多个直接模式无线电中的其他直接模式无线电的传输。 响应于检测到新的呼叫请求：识别在直接模式信道上要发送的最后一个无线电，发送用于由最后一个直接模式无线电接收的新呼叫请求进行发送，监视来自最后一个无线电的响应的直接模式信道 发送，并且如果从最后的无线电接收到授予新的呼叫请求的呼叫许可发送，则在直接模式通信信道上发起新的直接模式呼叫。 如果未接收到呼叫授权，则至少暂时禁止启动新的直接模式呼叫。

公开(公告)号：US20200146009A1

公开(公告)日：2020-05-07

申请号：US16181422

申请日：2018-11-06

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： DAVID G. WIATROWSKI ,  THOMAS B. BOHN ,  DIPENDRA M. CHOWDHARY

IPC: H04W72/04

Abstract: A method and device for zero configuration direct fallback communication is provided. In one aspect a method comprises selecting a channel in a fallback radio band based on at least a portion of at least one system operating parameter for a primary radio band. The method further comprises switching to the selected channel in the fallback radio band. The method also comprises communicating over the selected channel in the fallback radio band.

公开(公告)号：US20150173042A1

公开(公告)日：2015-06-18

申请号：US14106622

申请日：2013-12-13

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： YUEH CHING CHUNG ,  THOMAS B. BOHN ,  DIPENDRA M. CHOWDHARY ,  HUN WENG KHOO ,  SATYANARAYAN R. PANPALIYA ,  TEIK CHOON TEH

IPC: H04W72/00 ,  H04W72/04 ,  H04W64/00 ,  H04W4/08

CPC classification number: H04W64/00 ,  H04W4/08 ,  H04W76/45 ,  H04W84/08

Abstract: A radio affiliates, via a first channel, with at least one talk group the radio is interested in receiving calls from, sends a request to transmit location information on a separate revert channel, and receives a first grant time period to transmit location information on a particular revert channel. The radio moves at substantially the first grant time period, away from the first channel to the revert channel to transmit location information or request a second grant time period on the revert channel, receives an announcement on the revert channel during the first grant time period that a call of interest associated with the at least one talk group started while the radio was on the revert channel, determines an assigned traffic channel for the call of interest, and switches from the revert channel to the assigned traffic channel in order to receive the call of interest.

Abstract translation: 无线电附属机构经由第一信道与无线电有兴趣接收呼叫的至少一个通话组发送在单独的还原信道上发送位置信息的请求，并且接收第一授权时间段以在 特定还原通道。 无线电基本上在第一授权时间段移动，远离第一信道到恢复信道以发送位置信息，或在还原信道上请求第二授权时间段，在第一授权时间周期期间在恢复信道上接收公告， 当无线电在恢复信道上时，与所述至少一个通话组相关联的兴趣呼叫确定用于所述感兴趣的呼叫的所分配的业务信道，并且从恢复信道切换到所分配的业务信道，以便接收呼叫 出于兴趣。

公开(公告)号：US20140254458A1

公开(公告)日：2014-09-11

申请号：US13793621

申请日：2013-03-11

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： SATYANARAYAN R. PANPALIYA ,  DIPENDRA M. CHOWDHARY ,  SANJAYKUMAR S. KARPOOR ,  BADARINATH PATIBANDLA ,  DAVID G. WIATROWSKI

IPC: H04W72/00

CPC classification number: H04W74/0816 ,  H04W72/1242 ,  H04W72/14 ,  H04W76/14 ,  H04W76/18 ,  H04W92/18

Abstract: A process for resolving call collisions in a digital conventional direct mode includes monitoring a direct mode communication channel for transmissions from other direct mode radios in the plurality of direct mode radios. In response to detecting a new call request: identifying a last radio to transmit on the direct mode channel, transmitting a new call request for receipt by the last direct mode radio to transmit, monitoring the direct mode channel for a response from the last radio to transmit, and if a call grant granting the new call request is received from the last radio to transmit, initiating the new direct mode call on the direct mode communication channel. If the call grant is not received, at least temporarily refraining from initiating the new direct mode call.

Abstract translation: 用于在数字常规直接模式中解决呼叫冲突的过程包括监视直接模式通信信道用于来自多个直接模式无线电中的其他直接模式无线电的传输。 响应于检测到新的呼叫请求：识别在直接模式信道上要发送的最后一个无线电，发送用于由最后一个直接模式无线电接收的新呼叫请求进行发送，监视来自最后一个无线电的响应的直接模式信道 发送，并且如果从最后的无线电接收到授予新的呼叫请求的呼叫许可发送，则在直接模式通信信道上发起新的直接模式呼叫。 如果未接收到呼叫授权，则至少暂时禁止启动新的直接模式呼叫。

公开(公告)号：US20140016514A1

公开(公告)日：2014-01-16

申请号：US14014758

申请日：2013-08-30

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： DAVID G. WIATROWSKI ,  THOMAS B. BOHN ,  DIPENDRA M. CHOWDHARY

IPC: H04M3/20

CPC classification number: H04M3/20 ,  H04L47/245 ,  H04L47/32 ,  H04W4/06 ,  H04W76/28 ,  H04W76/36

Abstract: A system and method for interrupting a transmitting device during a call. In the system, calls are transmitted from a first device on a communication channel as a series of channel frames. At predetermined times during the transmission, the transmitting device is configured to drop channel frames, resulting in open channel frame periods where the transmitting device is not transmitting on the communication channel. During these open channel frame periods, the transmitting device is also configured to switch to a receiving mode. Other devices in the system are capable of switching into a transmitting mode during the open channel frame periods and, when applicable, sending an interrupt request on the communication channel to the transmitting device in order to request access to the channel.

Abstract translation: 一种用于在呼叫期间中断发送设备的系统和方法。 在系统中，作为一系列信道帧，从通信信道上的第一设备发送呼叫。 在发送期间的预定时间，发送设备被配置为丢弃信道帧，导致发送设备在通信信道上不发送的开放信道帧周期。 在这些开放频道帧周期期间，发送装置还被配置为切换到接收模式。 系统中的其他设备能够在开放的信道帧周期期间切换成发送模式，并且在适用的情况下，在通信信道上向发送设备发送中断请求，以便请求接入信道。

公开(公告)号：US20130246659A1

公开(公告)日：2013-09-19

申请号：US13893782

申请日：2013-05-14

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： DIPENDRA M. CHOWDHARY ,  THOMAS B. BOHN ,  TIANFANG LIU ,  DAVID G. WIATROWSKI

IPC: H04L29/06

CPC classification number: H04L69/04 ,  G01S5/0018 ,  G01S5/0284

Abstract: 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.

Abstract translation: 公开了用于压缩用于无线电传输的无线电的位置数据的方法和系统。 一种方法包括获得反映客户端设备的当前位置的原始纬度和原始经度坐标，由x位数表示的原始纬度坐标和由y位数表示的原始经度坐标。 通过从原始纬度坐标中移除n个最高有效位来创建压缩纬度坐标，可以截断原始纬度坐标。 通过从原始经度坐标中移除m个最高有效位以创建压缩经度坐标来截断原始经度坐标，其中m根据原始纬度坐标的值而变化。 压缩经度和压缩纬度坐标然后被发送到另一个网络设备进行解压缩并用作客户端设备绝对位置的指示。

公开(公告)号：US20150365920A1

公开(公告)日：2015-12-17

申请号：US14305345

申请日：2014-06-16

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： HUN WENG KHOO ,  DIPENDRA M. CHOWDHARY ,  YUEH CHING CHUNG ,  XIAO-YU LI

IPC: H04W72/04 ,  H04W4/02

CPC classification number: H04W4/02 ,  H04W72/0406 ,  H04W72/0446

Abstract: A method for enhanced data throughput on a windowed revert repeater channel in a radio communication system includes requesting, by a subscriber unit and via a control channel of the radio communication system, a window in which to transmit data updates on the windowed revert repeater channel of the radio communication system; receiving, by the subscriber unit and via the control channel, an assigned window on the windowed revert repeater channel for the data updates; monitoring, by the subscriber unit, the control channel repeater and determining a timing of the windowed revert repeater channel based on the monitoring; and reverting to the windowed revert repeater channel based on the timing and the assigned window, and transmitting the data updates during the assigned window. A subscriber unit and radio communication system are also disclosed.

Abstract translation: 一种用于在无线电通信系统中的加窗恢复中继器信道上增强数据吞吐量的方法，包括由用户单元和经由无线电通信系统的控制信道请求在其上发送数据更新的窗口，窗口恢复中继器信道 无线电通信系统; 由用户单元和经由控制信道接收用于数据更新的加窗恢复中继器信道上的分配窗口; 由所述用户单元监视所述控制信道中继器，并且基于所述监视来确定所述加窗的反转中继器信道的定时; 并基于定时和分配的窗口恢复到窗口恢复中继器信道，并在分配的窗口期间发送数据更新。 还公开了用户单元和无线电通信系统。

公开(公告)号：US20150312781A1

公开(公告)日：2015-10-29

申请号：US14264821

申请日：2014-04-29

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： DIPENDRA M. CHOWDHARY ,  JOHN P. BELMONTE ,  THOMAS B. BOHN ,  SATYANARAYAN R. PANPALIYA ,  BADARINATH PATIBANDLA

IPC: H04W24/04 ,  H04W74/08 ,  H04W28/02

CPC classification number: H04W24/04 ,  H04W28/0236 ,  H04W28/0242 ,  H04W48/02 ,  H04W74/0833

Abstract: A radio controller monitors a radio channel for a first period of time and determines a first indication of signals received without detecting synchronization or with detecting synchronization but failing error correction during that time. Responsive to determining that the first indication is above a predetermined threshold indicative of an interference condition, causing an instruction to be broadcast identifying a subset of subscriber devices allowed transmitting random access requests on the radio channel. The radio controller monitors the radio channel for a second period of time and determines a second indication during that time. If the second indication is an improvement over the first indication, the radio controller determines that the interference condition is caused by the mass random access event.

Abstract translation: 无线电控制器在第一时间段内监测无线电信道，并且确定接收到的信号的第一指示而不检测同步或者检测到同步，但在该时间期间失败的纠错。 响应于确定第一指示高于指示干扰条件的预定阈值，引起广播指令，标识允许在无线电信道上发送随机接入请求的订户设备的子集。 无线电控制器在第二段时间内监视无线电信道，并在该时间确定第二指示。 如果第二指示是对第一指示的改进，则无线电控制器确定干扰条件是由大规模随机接入事件引起的。

公开(公告)号：US20150172989A1

公开(公告)日：2015-06-18

申请号：US14106530

申请日：2013-12-13

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： HUN WENG KHOO ,  DIPENDRA M. CHOWDHARY ,  YUEH CHING CHUNG ,  CHEBRON PADMANABA ,  SATYANARAYAN R PANPALIYA ,  BADARINATH PATIBANDLA

IPC: H04W36/30 ,  H04J3/16 ,  H04W56/00

CPC classification number: H04W36/30 ,  H04J3/16 ,  H04W36/0061 ,  H04W36/026 ,  H04W36/36 ,  H04W56/00

Abstract: A radio receives audio information on a first traffic channel in a radio frequency (RF) site. The radio receives, on the first traffic channel, an announcement of alternative traffic channels on which the audio information is also transmitted in adjacent RF sites. The radio determines signal strength indicators for the alternative traffic channels in the adjacent RF sites while continuing to receive the audio information on the first traffic channel. The radio determines that a signal strength associated with the first traffic channel is below a first threshold. Based on the determination and as a function of the scanning, the radio roams to a second traffic channel, selected from the alternative traffic channels, in an adjacent RF site where a signal strength associated with the second traffic channel is above a second threshold. The radio receives the audio information via the second traffic channel.

Abstract translation: 无线电接收机在射频（RF）站点的第一业务信道上接收音频信息。 无线电接收机在第一业务信道上接收在相邻RF站点上发送音频信息的备选业务信道的通告。 无线电装置确定相邻RF站点中替代业务信道的信号强度指示符，同时继续在第一业务信道上接收音频信息。 无线电确定与第一业务信道相关联的信号强度低于第一阈值。 基于扫描的确定和功能，无线电漫游到相邻RF站点中从替代业务信道中选择的第二业务信道，其中与第二业务信道相关联的信号强度高于第二阈值。 无线电通过第二业务信道接收音频信息。

公开(公告)号：US20140254457A1

公开(公告)日：2014-09-11

申请号：US13793244

申请日：2013-03-11

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： SATYANARAYAN R. PANPALIYA ,  DIPENDRA M. CHOWDHARY ,  SANJAYKUMAR S. KARPOOR ,  BADARINATH PATIBANDLA ,  DAVID G. WIATROWSKI

IPC: H04W72/00

CPC classification number: H04W72/005 ,  H04W76/14 ,  H04W76/18 ,  H04W76/45 ,  H04W84/22

Abstract: A process for resolving call collisions in a digital conventional direct mode includes monitoring a direct mode communication channel for transmissions from other direct mode radios in the plurality of direct mode radios. In response to detecting a new call request: identifying a last radio to transmit on the direct mode channel, transmitting a new call request for receipt by the last direct mode radio to transmit, monitoring the direct mode channel for a response from the last radio to transmit, and if a call grant granting the new call request is received from the last radio to transmit, initiating the new direct mode call on the direct mode communication channel. If the call grant is not received, at least temporarily refraining from initiating the new direct mode call.