公开(公告)号：US20150023226A1

公开(公告)日：2015-01-22

申请号：US13946145

申请日：2013-07-19

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Hun Weng Khoo ,  Thomas B. Bohn ,  Yueh Ching Chung ,  David G. Watrowski

IPC: H04B7/212 ,  H04L5/14

CPC classification number: H04B7/2123 ,  H04B7/15542 ,  H04L5/14 ,  H04L5/1469 ,  H04W72/1263 ,  H04W84/047

Abstract: A method for enabling full duplex individual calls in repeater mode between two subscriber units (SUs) in a N:1 slotting ratio time division multiple access (TDMA) radio system includes receiving a request for a full duplex individual call from a first SU identifying a second SU as a target of the call. Determining to grant the request and subsequently assigning a first time slot of the N time slots on a first single frequency for one of inbound and outbound transmissions for the call between an assigned second repeater and the first SU and a second time slot on the first single frequency for the other of inbound and outbound transmissions for the call between the assigned second repeater and the first SU. Further, a grant message is transmitted to the first SU indicating the assigned first single frequency and assigned first and second time slots.

Abstract translation: 一种用于在N：1时隙率时分多址（TDMA）无线电系统中的两个用户单元（SU）之间以中继器模式启用全双工个性呼叫的方法包括从第一SU识别全双工个人呼叫的请求， 第二个SU作为呼叫的目标。 确定授权所述请求并且随后在所分配的第二中继器和所述第一SU之间的所述呼叫的入站和出站传输中的一个的第一单个频率上分配所述N个时隙的第一时隙，并且在所述第一单个频率上为所述第一单个频率分配所述N个时隙的第一时隙 用于分配的第二中继器和第一SU之间的呼叫的入站和出站传输中的另一个的频率。 此外，授权消息被发送到指示所分配的第一单个频率并分配的第一和第二时隙的第一SU。

公开(公告)号：US10462738B1

公开(公告)日：2019-10-29

申请号：US16044261

申请日：2018-07-24

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Arthur Christopher Leyh ,  Thomas B. Bohn ,  Gregory J. Buchwald

IPC: H04W52/02 ,  H04W56/00 ,  H04W72/04 ,  H04B7/212

Abstract: Base station device with reduced power consumption and method thereof. The base station device includes a transmitter configured to implement time-division multiple access (TDMA). The transmitter transmits payload signals in a TDMA frame including a first timeslot and a second timeslot, with one of the first timeslot and the second timeslot designated as an active timeslot and the other of the first timeslot and the second timeslot designated as an idle timeslot. The base station device includes an electronic processor coupled to the transmitter and configured to control transmission of calls through the transmitter. The electronic processor is configured to transmit payload signals during the active timeslot and de-key the transmitter during the idle timeslot. During a voice call, the electronic processor is configured to re-kay the transmitter during a portion of the idle timeslot to transmit synchronization information.

公开(公告)号：US11832299B2

公开(公告)日：2023-11-28

申请号：US16869377

申请日：2020-05-07

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Thomas B. Bohn ,  Piotr Ptasinski

IPC: H04W74/04

CPC classification number: H04W74/04

Abstract: Systems and methods for extended range direct mode enhanced channel access in digital mobile radio systems. One example method for operating a portable communication device includes receiving a transmit request, and, responsive to receiving the transmit request, transmitting a single transmit burst including a source identifier identifying the portable communications device and starting an enhanced channel access timer. The method includes, when the enhanced channel access timer expires without receiving at least one from the group consisting of a receive idle burst and a receive burst, transmitting a signal based on the transmit request. The method includes, when a receive burst including a second source identifier is received while the enhanced channel access timer has not expired, responsive to receiving the receive burst, comparing the source identifier to the second source identifier. The method includes, responsive to determining that the second source identifier matches the source identifier, transmitting the signal.

公开(公告)号：US10382905B1

公开(公告)日：2019-08-13

申请号：US16227625

申请日：2018-12-20

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Gregory J. Buchwald ,  Thomas B. Bohn ,  Arthur Christopher Leyh ,  David P Gurney

IPC: H04W4/10 ,  H04W4/021 ,  H04W4/08 ,  H04W84/04

Abstract: A method and server provide for routing traffic to user equipment in a talkgroup. The server receives a request for a new talkgroup call for a talkgroup. The server determines a total number of device targets for the talkgroup call. When the total number of device targets for the new talkgroup call is greater than a predetermined total target threshold number, a call grant for the new talkgroup call is routed to each device target for the talkgroup via a Land Mobile Radio (LMR) network. When the total number of device targets for the new talkgroup call is less than the predetermined total target threshold number, the call grant for the new talkgroup call is routed to each device target for the talkgroup via a preferred network for each device target.

公开(公告)号：US09344988B2

公开(公告)日：2016-05-17

申请号：US14927764

申请日：2015-10-30

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Alexander D. Roussev ,  Thomas B. Bohn

IPC: H04W4/00 ,  H04W60/04 ,  H04W28/02

CPC classification number: H04W60/04 ,  H04W4/10 ,  H04W28/0289 ,  H04W60/005 ,  H04W64/00

Abstract: A method and apparatus are described for managing a mass registration scenario in a two-way radio system. A site controller in a trunked radio system detects a mass registration condition in which registration requests by subscriber units are likely to collide on an inbound control channel. During the mass registration condition, the site controller initiates a restriction period by instructing subscriber units that are members of particular talkgroups to temporarily cease registration requests. Those talkgroup members are permitted to resume their registration requests when a predetermined delay time has passed since the members were instructed to cease registration, or when a particular silence time has passed without registration activity over the control channel.

Abstract translation: 描述了一种在双向无线电系统中管理大量注册场景的方法和装置。 中继无线电系统中的站点控制器检测用户单元的注册请求可能在入站控制信道上发生冲突的质量登记条件。 在质量注册条件期间，现场控制器通过指示作为特定通话组的成员的用户单元临时停止注册请求来发起限制期。 当会员被指示停止注册之后，或者当特定的沉默时间过去而没有通过控制频道的登记活动时，经过预定的延迟时间，允许这些通话组成员恢复注册请求。

公开(公告)号：US11882081B2

公开(公告)日：2024-01-23

申请号：US17449563

申请日：2021-09-30

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： David P. Gurney ,  Thomas B. Bohn ,  Bradley M. Hiben

IPC: H04L5/14 ,  H04L25/02 ,  H04W24/08

CPC classification number: H04L5/14 ,  H04L25/0202 ,  H04W24/08

Abstract: Systems and methods for intelligent interference mitigation for time division multiplexing broadband networks. One example embodiments of a wireless base station includes an electronic processor and a transceiver coupled to the electronic processor. The electronic processor is configured to operate to communicate wirelessly via the transceiver with subscriber units utilizing time division duplexing (TDD) and a first frame configuration, and characterize each of a plurality of sub-frames of the first frame configuration as being either conflicting or non-conflicting. The electronic processor is configured to estimate link conditions for the subscriber units and determine, based on the link conditions, whether the subscriber units are resilient or non-resilient. The electronic processor is configured to assign resilient subscriber units to conflicting sub-frames and non-resilient subscriber units to non-conflicting sub-frames.

公开(公告)号：US10764894B2

公开(公告)日：2020-09-01

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 ,  H04W72/02 ,  H04W92/18

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：US20150148034A1

公开(公告)日：2015-05-28

申请号：US14090341

申请日：2013-11-26

Applicant: Motorola Solutions, Inc.

Inventor： Alexander D. Roussev ,  Thomas B. Bohn

IPC: H04W60/00

CPC classification number: H04W60/04 ,  H04W4/10 ,  H04W28/0289 ,  H04W60/005 ,  H04W64/00

Abstract: A method and apparatus are described for managing a mass registration scenario in a two-way radio system. A site controller in a trunked radio system detects a mass registration condition in which registration requests by subscriber units are likely to collide on an inbound control channel. During the mass registration condition, the site controller initiates a restriction period by instructing subscriber units that are members of particular talkgroups to temporarily cease registration requests. Those talkgroup members are permitted to resume their registration requests when a predetermined delay time has passed since the members were instructed to cease registration, or when a particular silence time has passed without registration activity over the control channel.

Abstract translation: 描述了一种在双向无线电系统中管理大量注册场景的方法和装置。 中继无线电系统中的站点控制器检测用户单元的注册请求可能在入站控制信道上发生冲突的质量登记条件。 在质量注册条件期间，现场控制器通过指示作为特定通话组的成员的用户单元临时停止注册请求来发起限制期。 当会员被指示停止注册之后，或者当特定的沉默时间过去而没有通过控制频道的登记活动时，经过预定的延迟时间，允许这些通话组成员恢复注册请求。

公开(公告)号：US20230095424A1

公开(公告)日：2023-03-30

申请号：US17449563

申请日：2021-09-30

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： David P. Gurney ,  Thomas B. Bohn ,  Bradley M. Hiben

IPC: H04L5/14 ,  H04L25/02 ,  H04W24/08

Abstract: Systems and methods for intelligent interference mitigation for time division multiplexing broadband networks. One example embodiments of a wireless base station includes an electronic processor and a transceiver coupled to the electronic processor. The electronic processor is configured to operate to communicate wirelessly via the transceiver with subscriber units utilizing time division duplexing (TDD) and a first frame configuration, and characterize each of a plurality of sub-frames of the first frame configuration as being either conflicting or non-conflicting. The electronic processor is configured to estimate link conditions for the subscriber units and determine, based on the link conditions, whether the subscriber units are resilient or non-resilient. The electronic processor is configured to assign resilient subscriber units to conflicting sub-frames and non-resilient subscriber units to non-conflicting sub-frames.