One example Land Mobile Radio (LMR) base station includes a network interface and an electronic processor. The electronic processor is configured to receive profile information of a plurality of fifth generation (5G)/Long Term Evolution (LTE) communication devices. The profile information of the plurality of 5G/LTE communication devices may be transmitted (i) over a background gateway communication channel to an LMR communication network that includes the LMR base station and (ii) in response to the 5G/LTE software defined network detecting a fault condition of the first 5G/LTE communication network. The electronic processor is further configured to broadcast a capture beacon based on the profile information and compliant with at least some characteristics of a 5G/LTE communication protocol. The capture beacon is configured to be received by the 5G/LTE communication device to reconfigure the 5G/LTE communication device for communication compliant with an LMR communication protocol.

Applications such as interworking between mission critical push-to-talk (MCPTT) and terrestrial trunked radio (TETRA) networks is not feasible due to absence of vendor-independent protocol for location information exchange between the MCPTT and TETRA networks. The disclosure herein generally relates to telecommunication networks, and, more particularly, to a method and a network for location information exchange between the MCPTT and TETRA networks. Protocols are defined for facilitating location information exchange between a MCPTT server and a TETRA location server, for various triggers including Periodic, CellChange, Immediate Request, PowerOn, and EnterService. In the event of any of these triggers, an Interworking Module (IM) situated between the MCPTT server and the TETRA location server performs mapping between Session Initiation Protocol (SIP) messages from the MCPTT and Location Information Protocol (LIP) messages from the TETRA location server to facilitate the location information exchange between the MCPTT server and the TETRA location server.

A system is disclosed in which a mobile communication device establishes device-to-device (D2D) communication with another mobile communication device, and searches for a communication network whilst engaged in the D2D communication. When it finds a communication network, the mobile communication device indicates that it is engaged in the D2D communication. The mobile communication device continues, or does not continue, the D2D communication based on an authorisation by the communication network.

A private mobile radio network installation includes a plurality of devices each including a local private mobile radio network infrastructure including a core network module, a subscriber server and a base station module; a management system; and a network interface; wherein the devices are connected therebetween via their network interfaces, and wherein the management systems are configured to choose one of the devices; and connect the base station module of each device to the core network module of the chosen device to form a distributed private mobile radio network infrastructure.

A private mobile radio network installation includes a plurality of devices each including a local private mobile radio network infrastructure including a core network module, a subscriber server and a base station module; a management system; and a network interface; wherein the devices are connected therebetween via their network interfaces, and wherein the management systems are configured to choose one of the devices; and connect the base station module of each device to the core network module of the chosen device to form a distributed private mobile radio network infrastructure.

A communication apparatus and a wireless communication system are provided to perform information transmission between a first communication device group and a second communication device group via wireless communication performed by means of radio waves of mutually different frequencies without being limited by frequency allocation. The communication apparatus includes a first voice input means for inputting a voice emitted from a first communication device that is one constituent element of the first communication device group into a second communication device that is one constituent element of the second communication device group and a second voice input means for inputting another voice emitted from the second communication device that is one constituent element of the second communication device group into the first communication device that is one constituent element of the first communication device group.

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.

When a land mobile radio connection is unavailable for a subscriber device, the subscriber device may use an alternative connection. A gateway may be used to allow the subscriber device to connect to the zone controller of a land mobile radio network via an alternative network. The gateway may be configured to perform remote scan and priority operations, similar to the scan operations the subscriber device would ordinarily perform locally. The gateway may receive a scan list from the subscriber device and call notifications from the zone controller. Using the scan list, the gateway may evaluate the call notifications, determine whether they should be sent to the subscriber device, and send them to the subscriber device over the alternative connection. The gateway may be able to adjust the remote scan and priority operations based on receiving different scan lists from the subscriber device or by generating different versions itself.

A method and device for communication based on a trunking system. A first repeater sends an identifier of a free repeater and state information of the first repeater to a terminal, the free repeater being a repeater designated from repeaters which are of pre-set type having at least one idle timeslot channel; when the terminal analyses the state information of the first repeater to find that the first repeater has an idle timeslot channel, and a pre-set main repeater is the first repeater, the terminal uses the first repeater to perform communication; and when the terminal analyses the state information of the first repeater to find that all timeslot channels of the first repeater are occupied, if the terminal does not participate in data communication of the first repeater, the terminal accesses the free repeater to perform communication.

A layered convergence topology structure for a plurality of sensors is established based on a sensing range and a position relationship of at least one sensor from the sensors. A plurality of pieces of first sensed information, respectively captured through each sensor of the sensors, are divided into at least two first groups based on the layered convergence topology structure. Each piece of first sensed information in respective first group of the at least two first groups is converged to obtain at least two pieces of first converged information. The at least two pieces of first converged information are determined as at least two pieces of second sensed information for convergence to obtain second converged information. When a piece number of the second converged information is one, the second converged information is determined as target converged information.