A land mobile radio (LMR) device may be used with a cellular device in communication with a push-to-talk-over-cellular (POC) network. The LMR device may include an LMR processor, an LMR memory, an LMR local communication interface configured to communicate with the cellular device, and a channel selection input. The LMR processor may be configured to retrieve channel configuration information defining one or more POC channels from the cellular device via the LMR local communication interface and store the channel configuration information in the LMR memory. The channel selection input may be configured to select a selected channel from the one or more POC channels defined by the channel configuration information. The LMR local communication interface may be configured to communicate with the POC network over the selected channel via the cellular device.

Systems and methods for broadband failover in land mobile radio networks. One method includes operating a first communication interface of a converged communication device to execute a first communication between the device and a first network using an LMR modality. The method includes determining a plurality of radio communication characteristic values for each of a plurality of sites of the first network and generating a fallback threshold for a home site of the device based on the plurality of radio communications characteristics. The method includes determining whether a current radio communication characteristic value associated with a home site of the device exceeds the fallback threshold, and, when the current radio communication characteristic value does not exceed the fallback threshold, operating a second communication interface of the converged communication device to execute a second communication between the device and a second network using a non-LMR modality.

A wireless communication system comprises a first wireless communication device for a first team member, and a second wireless communication device for a second team member. The first wireless communication device comprises a microphone and a transmitter for transmitting an oral message via a first wireless communication protocol. The second wireless communication device comprises a main transceiver, a wearable audio device, and a support configured for mounting the main transceiver onto hockey shoulder pads of the second team member in a location physically remote from the wearable audio device.

A wireless communication system comprises a first wireless communication device for a first team member, and a second wireless communication device for a second team member. The first wireless communication device comprises a microphone and a transmitter for transmitting an oral message via a first wireless communication protocol. The second wireless communication device comprises a main transceiver, a wearable audio device, and a support configured for mounting the main transceiver onto hockey shoulder pads of the second team member in a location physically remote from the wearable audio device.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein disclose methods and systems for providing support for ad hoc group calls in mission critical services. The method includes listing, by an MCPTT client, a list of MCPTT participants or a functional alias to initiate an ad hoc group call in a MCX on network. The method further includes initiating, by the MCPTT client, the ad hoc group call with a list of MCPTT participants or the functional alias by sending a group call request to an MCPTT server.

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.

Provided are a voice communication method and system under a broadband and narrow-band intercommunication environment. The method comprises: when a broadband terminal calls a narrow-band terminal, the broadband terminal executing a reducing operation on an energy amplitude of voice data to obtain a reduced voice data packet, and sending the reduced voice data packet to the narrow-band terminal such that the narrow-band terminal plays the reduced voice data packet; and when the narrow-band terminal calls the broadband terminal, the broadband terminal receiving a voice data packet, and executing an amplification operation on an energy amplitude of the voice data packet to obtain an enlarged voice data packet, and the broadband terminal playing the enlarged voice data packet. The present application can solve the problem of voice size inconsistency between a broadband terminal and a narrow-band terminal, thereby enhancing the usage experience for a user.

A process for extending unencrypted and encrypted voice for Land Mobile Radio communication across a wider geographical area using a repeater. The solution used is based upon an approach of embedding P25 Phase II signals inside P25 Phase I signals when required to communicate with a remote terminal.

The present invention introduces a system, which comprises a telecommunication network structure, which can be called as an intelligent combination of Push-To-Talk (i.e. Direct Mode Operation, DMO) communication technique and cellular network application. The DMO can be set as a preferred choice if it is available. The subscriber devices retransmit (i.e. forward) the data message further until the message reaches the called subscriber terminal. The total cumulative hop between subscriber terminals may comprise both DMO-based hops and cellular connections. ID means are provided, and telemetric information can be sent from the terminals. The invention allows emergency information submissions from the terminals, and forced broadcast information from an administrator to the terminals as well. Dynamic Talk Groups (DTG) can be defined based on geographic locations on each registered user.

A method and device for improved audio intelligibility in a converged land mobile radio (LMR)/broadband (BB) communications system is provided. A converged portable radio operating as part of a talkgroup in the LMR/BB system checks for predetermined triggers during standby that could cause receive radios of the talkgroup to receive degraded audio. If such a trigger is detected then the converged portable radio switches from the LMR system to the BB system and transmits a notification including a change system message to the other converged portable radios of the talkgroup. The notification is transmitted prior to any push-to-talk audio being transmitted from the originating radio. The converged portable radio can transmit, via a push-to-talk switch, narrowband (NB) audio and wideband (WB) audio in parallel over the BB system to the talkgroup subsequent to the detection of triggers and the sending of the notification.