公开(公告)号：US10762927B2

公开(公告)日：2020-09-01

申请号：US16114326

申请日：2018-08-28

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Yunhai Yang ,  Thomas J Senese ,  George R. Economy

IPC: G06F17/00 ,  G11B20/10 ,  H04W4/44 ,  H04L9/06

Abstract: A computer apparatus and computer-implemented apparatus for logging audio to an audio logger. Audio is transmitted from a source communication device. At least one receiving communication device receives the audio. The audio is logged to an audio logger, for example by the source communication device and the receiving communication device. A hash of the audio is computed and the hash of the audio and communication parameters related to the audio are stored in a blockchain.

公开(公告)号：US10757729B2

公开(公告)日：2020-08-25

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：US20200260479A1

公开(公告)日：2020-08-13

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：US10524260B2

公开(公告)日：2019-12-31

申请号：US15977541

申请日：2018-05-11

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Yunhai Yang ,  Hans C. Sowa ,  Daniel J. Mcdonald

IPC: H04W72/04 ,  H04W4/10 ,  H04W76/45 ,  H04W84/08

Abstract: A device, system and method for preventing audio loss is provided. A device receives scheduling data, for a plurality of timeslots, indicative of when different communication types are to occur in a present voicecall, the plurality of timeslots including at least one data timeslot for transmitting data on the present voicecall. When a state of the present voicecall associated with a potential collision with the data for transmission in the at least one data timeslot is determined, the device cancels transmission of the data in the at least one data timeslot.

公开(公告)号：US10448392B2

公开(公告)日：2019-10-15

申请号：US15591649

申请日：2017-05-10

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Yunhai Yang ,  Daniel J. McDonald

IPC: H04W72/04 ,  H04B7/26 ,  H04J3/16 ,  H04W72/12

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：US09504017B2

公开(公告)日：2016-11-22

申请号：US14040220

申请日：2013-09-27

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Yunhai Yang ,  Daniel J McDonald

IPC: H04B7/00 ,  H04W72/02 ,  H04W72/04

CPC classification number: H04W72/02 ,  H04W72/0406

Abstract: A subscriber unit-based method and a subscriber unit include locally maintaining a status of each working channel of a plurality of working channels in a wireless communication system; responsive to an inbound request, selecting one of a plurality of idle working channels of the plurality of working channels and a dedicated control channel; and sending the inbound request on the selected channel. An infrastructure-based method is also provided. Variously, the methods and systems increase service capacity in radio communication systems using idle working channels as flexible control channels. An infrastructure-based method is also described.

Abstract translation: 基于订户单元的方法和订户单元包括在无线通信系统中本地维护多个工作信道的每个工作信道的状态; 响应入站请求，选择所述多个工作信道中的多个空闲工作信道之一和专用控制信道; 并在所选频道上发送入站请求。 还提供了基于基础设施的方法。 各种方法和系统使用空闲工作信道作为灵活的控制信道，提高无线电通信系统的服务能力。 还描述了基于基础设施的方法。

公开(公告)号：US09351157B2

公开(公告)日：2016-05-24

申请号：US14056719

申请日：2013-10-17

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Anuj Kapoor ,  Daniel J. McDonald ,  Harish Natarahjan ,  Yunhai Yang

IPC: H04W12/02 ,  H04K1/00 ,  H04L9/14 ,  H04W88/18

CPC classification number: H04W12/02 ,  H04K1/00 ,  H04L9/14 ,  H04W88/181

Abstract: Reduction of audio truncation when transcoding speech data from one coding format to another. Embodiments include receiving packets of a first communication session containing first encrypted speech data encoded according to a vocoder of a first type and encrypted using an encryption protocol, and containing a first encryption protocol identification information distributed among the received packets. Further embodiments include extracting the first encryption protocol identification information from the received packets and processing the received packets based on the first encryption identification information. Embodiments include transmitting one or more voice header packets containing a second encryption protocol identification information in a second communication session as well as transmitting packets in the second communication session containing second encrypted speech data encoded according to a vocoder of a second type.

Abstract translation: 将语音数据从一种编码格式转码到另一种编码格式时，减少音频截断。 实施例包括接收包含根据第一类型的声码器编码并且使用加密协议加密的第一加密语音数据的第一通信会话的分组，并且包含分布在接收分组中的第一加密协议标识信息。 另外的实施例包括从接收到的分组提取第一加密协议标识信息，并且基于第一加密标识信息处理接收到的分组。 实施例包括在第二通信会话中发送包含第二加密协议标识信息的一个或多个语音报头分组，以及在第二通信会话中发送包含根据第二类型的声码器编码的第二加密语音数据的分组。

公开(公告)号：US09055562B2

公开(公告)日：2015-06-09

申请号：US13631320

申请日：2012-09-28

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Stephen H. Sanders, III ,  Yunhai Yang ,  Leslie G. Gustafson

IPC: H04W74/04 ,  H04W84/08

CPC classification number: H04W74/04 ,  H04W84/08

Abstract: A scheduling component associated with a data channel configures initial reserved bandwidth allocations for each agency permitted access to a shared data channel. When sufficient bandwidth is available on the shared data channel to meet all bandwidth requests, the scheduling component schedules access to available random access slots on the shared data channel. When an agency accesses a scheduled random access slot, the agency is able to reserve additional reserved slots on the shared data channel for data transmission on an on-demand basis. The scheduling component enables bandwidth management controls when one or more requests for the additional reserved slots on the shared data channel cannot be fulfilled due to insufficient available additional reserved slots on the shared data channel and controls access to the shared data channel by distributing limited access permissions for future available random access slots to agencies permitted access to the shared data channel.

Abstract translation: 与数据通道相关联的调度部件配置用于每个机构允许访问共享数据信道的初始保留带宽分配。 当共享数据信道上有足够的带宽可用以满足所有带宽请求时，调度组件调度对共享数据信道上的可用随机接入时隙的访问。 当机构访问调度的随机接入时隙时，机构能够在共享数据信道上预留额外的保留时隙，以便在需要时进行数据传输。 当共享数据信道上的附加保留时隙的一个或多个请求由于共享数据信道上的可用附加保留时隙不足而无法被满足时，调度组件实现带宽管理控制，并通过分发有限访问权限来控制对共享数据信道的访问 用于将来可用的随机接入时隙到允许访问共享数据信道的机构。