Abstract: Scheduling resource reservations in a cloud based communications system. One embodiment provides a scheduling server for scheduling resource reservation in a cloud-based communication system. The scheduling server includes an electronic processor configured to monitor events outside of the cloud-based communication system to determine an occurrence of an incident and determine cloud computing resources to be allocated to consuming communication devices assigned to respond to the incident. The electronic processor is also configured to reserve the cloud computing resources such that the cloud computing resources are available to the consuming communication devices for responding to the incident.

Abstract: The present invention discloses a high-entropy soft magnetic alloy with 900 K high-temperature resistance, comprising Fe, Co, Ni, Si and Al, and the atomic percent of the alloy composition is expressed as FexCoyNizSimAln, wherein x=40%-80%, y=20%-60%, z=0-30%, m=0-20%, n=0-20%, and x+y+z+m+n=100%; the atomic percent of other doping elements is p=0-5%, and 0.5?m/n?3; the performance indexes of the material include: at room temperature, saturation magnetization Ms=90-150 emu/g, and coercive force Hc=0.1-15 Oe; and at 900 K, saturation magnetization Ms=70-130 emu/g, and coercive force Hc=0.1-25 Oe.

Abstract: A high-throughput 3D printing system for preparing multi-component, small sized samples, includes a raw material supply module, providing a various kinds of metal powders for printing small sized samples; the first mixer module, mixing the metal powders obtained from the raw material supply module to generate the first blended metal powders; the second mixer module, mixing the first mixed metal powders, in order to generate the second blended metal powders for printing small sized samples; the first printing module, printing the secondary blended metal powder into a small-sized sample; a control module, controlling other functional modules of the high-throughput 3D printing system for generating small-size samples.

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.

Abstract: Scheduling resource reservations in a cloud based communications system. One embodiment provides a scheduling server for scheduling resource reservation in a cloud-based communication system. The scheduling server includes an electronic processor configured to monitor events outside of the cloud-based communication system to determine an occurrence of an incident and determine cloud computing resources to be allocated to consuming communication devices assigned to respond to the incident. The electronic processor is also configured to reserve the cloud computing resources such that the cloud computing resources are available to the consuming communication devices for responding to the incident.

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.

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.

Abstract: A method and system to avoid echo in large volume calls is provided. A Land Mobile Radio (LMR) core network receives audio packets for audio packets intended for a plurality of mobile devices. The Smart Connect Gateway determines a geographic location of each of the plurality of mobile devices. The Smart Connect Gateway transmits the audio packets to the plurality of mobile devices based upon the geographic location of each of the plurality of mobile devices.

Abstract: A method and system to avoid echo in large volume calls is provided. A Land Mobile Radio (LMR) core network receives audio packets for audio packets intended for a plurality of mobile devices. The Smart Connect Gateway determines a geographic location of each of the plurality of mobile devices. The Smart Connect Gateway transmits the audio packets to the plurality of mobile devices based upon the geographic location of each of the plurality of mobile devices.

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.

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.

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.

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.

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.

Abstract: A device, system and method for throttling network usage of a mobile communication device is provided. A mobile communication device comprises: a communication unit configured to wirelessly communicate over a network; a memory storing one or more applications that use the communication unit to communicate via the network; and a controller communicatively coupled to the communication unit and the memory. The controller receives, via the communication unit, network data indicative of current network usage. The controller dynamically throttle usage of the communication unit by the one or more applications according to the network data.

Abstract: A method and system resource allocation in a cloud-based communication system is provided. A cloud-based communication system forecasts a traffic envelope pattern across the cloud-based communication system, preferably via machine learning. The cloud-based communication system sets a potential maximum traffic amount for the cloud-based communication system using cloud platform information and call properties. The cloud-based communication system bounds the potential maximum traffic amount using bounding parameters, and adjusts the traffic envelope pattern based on an incident context. The cloud-based communication system consolidates resources within the cloud-based communication system and adjusts call resource resources in the cloud-based communication system when passive performance monitoring indicates a new burst traffic pattern.

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.

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.

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.

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.