公开(公告)号：US10999877B1

公开(公告)日：2021-05-04

申请号：US16715483

申请日：2019-12-16

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Yunhai Yang

IPC: H04W74/08 ,  H04W28/02 ,  H04W72/12 ,  H04W48/02 ,  H04W8/18

Abstract: A method and system for minimizing control channel contention in a communication system is provided. A subscriber unit relocator receives, via a broadband channel, a first access log indicating that the first subscriber unit had a first access failure on a narrowband channel from a first subscriber unit. The subscriber unit relocator targeted collects and receives, via the broadband channel, a second access log indicating that the second subscriber unit had a second access failure on the narrowband channel from a second subscriber unit. The subscriber unit relocator correlates the first access log, the second access log, and server data. The subscriber unit relocator adjusts parameters to minimize future inbound channel access problems.

公开(公告)号：US10785609B2

公开(公告)日：2020-09-22

申请号：US16227431

申请日：2018-12-20

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Yunhai Yang ,  Daniel J. McDonald ,  Joseph Namm ,  David R. Mills

IPC: H04W4/08 ,  H04W56/00 ,  H04B17/318 ,  H04W72/14 ,  H04W24/08 ,  H04L12/703 ,  H04L12/18 ,  H04L12/24 ,  H04W24/04

Abstract: A method and talkgroup server for extending a battery life in a subscriber unit is provided. A time sync at a triple TSBK boundary is maintained, the triple TSBK boundary being associated with a talkgroup. The triple TSBK window is calculated based on the time sync and configuration data. A talkgroup call request is granted for the talkgroup using a talkgroup call grant. A first transmission of the talkgroup call grant is targeted in the triple TSBK window associated with the talkgroup.

公开(公告)号：US11647533B2

公开(公告)日：2023-05-09

申请号：US17087048

申请日：2020-11-02

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Shivakumar Bangalore Ramu ,  Yunhai Yang

IPC: H04W72/06 ,  H04W72/563 ,  G06F16/9035 ,  H04W72/0453 ,  H04W74/00

CPC classification number: H04W72/563 ,  G06F16/9035 ,  H04W72/0453 ,  H04W74/002

Abstract: A device, system and method for dynamically adjusting a queue structure and message sequencing is provided. A device receives, from one or more edge devices receiving outbound signaling messages on one or more control channels, rankings of previously transmitted outbound signaling messages. The device adjusts (and/or causes adjusting of) one or more of a queue structure and a message sequence of the outbound signaling messages based on the rankings. The device transmits (and/or causes transmission), to the one or more edge devices, the outbound signaling messages according to one or more of the queue structure and the message sequence, as adjusted.

公开(公告)号：US11153883B1

公开(公告)日：2021-10-19

申请号：US16835354

申请日：2020-03-31

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Yunhai Yang ,  Myo Tun Oo

IPC: H04W72/04

Abstract: A method and system to avoid flooding a control channel after the end of a system-wide call is provided. A Land Mobile Radio (LMR) site tracks active channel assignments. The LMR site also receives a system-wide call request. Upon receiving the system-wide call request, a snapshot of the channel assignments is taken. When the LMR site receives an indication that the system wide call request has ended, the LMR site receives a de-assign complete message.

公开(公告)号：US10945163B2

公开(公告)日：2021-03-09

申请号：US16175888

申请日：2018-10-31

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Yunhai Yang ,  Daniel J. McDonald

IPC: H04W36/00 ,  H04W4/08 ,  H04W4/10 ,  H04W76/45 ,  H04W52/02 ,  H04W8/18 ,  H04W36/24 ,  H04W36/32 ,  H04W76/27 ,  H04W84/08

Abstract: A method and subscriber unit provide mission critical talkgroup service while minimizing truncation and delay when at least one member talkgroup radio is on a Broadband LTE (Long Term Evolution) system. A dual-mode subscriber unit preferably obtains LMR coverage map data to predict the entry point and remaining duration for when the subscriber unit will operate in the backup LTE system. The subscriber unit falls back to the LTE system when the subscriber unit is out of the coverage area of the LMR system. Because the subscriber unit set the connected state prior to using the LTE network and continuously optimizes RRC mode parameters, audio truncation and call delay are greatly reduced without draining the battery of the subscriber unit.

公开(公告)号：US20200068611A1

公开(公告)日：2020-02-27

申请号：US16438125

申请日：2019-06-11

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Yunhai Yang ,  Daniel J. McDonald ,  Ruth A. Varela

IPC: H04W72/14 ,  H04W4/08 ,  G06N20/00

Abstract: Systems and methods for reducing audio delay for mixed mode delivery of audio transmissions. One example system includes a communication interface communicatively coupled to a communication network, and an electronic processor. The electronic processor is coupled to the communication interface, and configured to receive, via the communication interface, a group call request for a talkgroup. The electronic processor is configured to transmit, in response to receiving the group call request, a call grant message to a plurality of subscriber units affiliated with the talkgroup. The electronic processor is configured to determine, using a machine learning algorithm, a subset of the plurality of subscriber units based on a call grant response time, and, while a transmission hold-off timer has not expired, when a call grant response has been received from each of the subscriber units of the subset, forward an audio transmission to the subset based on the group call request.

公开(公告)号：US20180359654A1

公开(公告)日：2018-12-13

申请号：US15621303

申请日：2017-06-13

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Daniel J. McDonald ,  Yunhai Yang

IPC: H04W28/02 ,  H04W72/02 ,  H04W72/12 ,  H04L12/927

CPC classification number: H04W28/0215 ,  H04L47/70 ,  H04L47/80 ,  H04L47/803 ,  H04W4/08 ,  H04W72/02 ,  H04W72/10 ,  H04W72/1242 ,  H04W76/50

Abstract: A method of assigning a priority to a portable communication device in a communication system. The method includes determining an incident profile. The incident profile defines an expected timeline having a first incident stage, a first role associated with the first incident stage, a second incident stage, and a second role associated with the second incident stage. The first role is different than the second role, and the incident profile indicates a desired priority rank for the first role and the second role. The method also includes assigning a priority rank to a first portable communication device when the first portable communication device corresponds to the first role during the first incident stage, detecting a transition between the first incident stage and the second incident stage, and assigning the priority rank of the portable communication device according to the second role during the second incident stage.

公开(公告)号：US20180332578A1

公开(公告)日：2018-11-15

申请号：US15591649

申请日：2017-05-10

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Yunhai Yang ,  Daniel J. McDonald

IPC: H04W72/04 ,  H04J3/16 ,  H04B7/26

CPC classification number: H04W72/0446 ,  H04B7/2653 ,  H04J3/1694 ,  H04W72/0413 ,  H04W72/048 ,  H04W72/1257

Abstract: A method, device, and system for scheduling a status update in a time division multiple access (TDMA) communication system. One method includes transmitting, with a call controller, scheduling information to the each of the plurality of communication devices via an outbound time slot associated with a control channel of a local common TDMA channel to schedule the each of the plurality of communication devices to transmit the status data in a pre-determined sequence. The method also includes receiving the status data from at least one of the plurality of communication devices in the pre-determined sequence.

公开(公告)号：US11375534B2

公开(公告)日：2022-06-28

申请号：US16860882

申请日：2020-04-28

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Yunhai Yang ,  Daniel J. McDonald ,  Ruth A. Varela

IPC: H04W72/14 ,  H04W4/08 ,  G06N20/00

Abstract: Systems and methods for reducing audio delay for mixed mode delivery of audio transmissions. One example system includes a communication interface communicatively coupled to a communication network, and an electronic processor. The electronic processor is coupled to the communication interface, and configured to receive, via the communication interface, a group call request for a talkgroup. The electronic processor is configured to transmit, in response to receiving the group call request, a call grant message to a plurality of subscriber units affiliated with the talkgroup. The electronic processor is configured to determine, using a machine learning algorithm, a subset of the plurality of subscriber units based on a call grant response time, and, while a transmission hold-off timer has not expired, when a call grant response has been received from each of the subscriber units of the subset, forward an audio transmission to the subset based on the group call request.

公开(公告)号：US11102621B2

公开(公告)日：2021-08-24

申请号：US16836215

申请日：2020-03-31

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Yunhai Yang ,  Daniel J. McDonald

IPC: H04W4/08 ,  H04W76/38

Abstract: A method for extending the connection time of talkgroup radios in a talkgroup conversation based on historical talkgroup statistics is provided. A talkgroup conversation request intended for a talkgroup is received from a first mobile unit. A group call grant message is sent to radios that are members of the talkgroup. The group call grant message initiates the talkgroup conversation with a first talkgroup call and includes an extended connection time value. Once it is determined that the first talkgroup call has ended, all radios that are members of the talkgroup are kept in a connected state. An extended connection timer utilizing the extended connection time value is started. Upon expiration of the extended connection timer, all radios that are members of the talkgroup are set to an idle state.