Motorola Solutions, Inc.

Grzegorz Szyszka

Mariusz Wawrowski

Pawel Jurzak

Michal Szychowski

Wojciech Jan Kucharski

Robert Mrowiec

Krzysztof Minior

Piotr Kuzio

Przemyslaw L Bogucki

Grzegorz Marcin Pawlik

Bartlomiej Olejak

Mariusz R Wawrowski

A dual watch subscriber unit (SU) in a wireless communication system transmits short data during an active call in response to a request to transmit short data. The SU transmits, via a transceiver at the SU, pending short data on an inbound data channel of an inbound traffic frequency. One of prior to or after transmitting the short data, the SU substantially simultaneously receives: via a first receiver of the transceiver, missed communication media of the active call missed during transmitting of the pending short data on a first outbound channel of a first outbound traffic frequency; and via a second receiver of the transceiver, second communication media of the active call, transmitted prior to or after the missed communication media of the active call, on a second outbound channel of a second outbound traffic frequency. The SU then plays back media from the missed and second communication media.

Method, device, and system for transmitting short data during an active call by a dual watch subscriber unit

A mobile radio (MR) transmits short data during an active time division multiple access (TDMA) call in a wireless communication system. The mobile radio receives first communication media (CM) of the active call in a first slot of a first outbound TDMA logical channel (FLC) of an outbound traffic frequency having a slotting ratio n&#x3e;=2. The MR transmits short data during at least a portion of a second slot of the FLC, pending short data on an inbound logical data channel of an inbound traffic frequency. The MR then receives second CM of the active call in a third slot of the FLC, and receives missed CM of the active call without specifically identifying the missed CM in any request for re-transmission of missed CM, in a first slot of a second outbound TDMA logical channel of the outbound traffic frequency.

Method, device, and system for transmitting short data during an active TDMA call

Communication groups are formed based on mobile station location history. The process includes receiving, at a controller device, a group formation request from a requesting device, the request specifying a location and a time window, identifying one or more mobile stations determined to be within a threshold area relative to the location during the time window, and causing a communication group to be created including the identified one or more mobile stations. A further process includes a requesting device configured to identify a location and time window associated with an event, transmit a group formation request specifying the location and the time window and requesting formation of a communication group comprising mobile stations located within a threshold area relative to the location during the time window, and transmit using a communication group identifier provided to the requesting device.

Method and apparatus for forming communication group based on location history

At least one embodiment takes the form of a process carried out by a first radio-network switching system (RNSS). The first RNSS maintains a talkgroup of mobile radios that includes a first mobile radio. The first RNSS receives an add-mobile-radio request from the first mobile radio and responsively sends an add-mobile-radio response to the first mobile radio. The add-mobile-radio response includes an add-mobile-radio authentication token. The first RNSS receives, from a second mobile radio, an add-mobile-radio authentication message that identifies the second mobile radio and that includes the add-mobile-radio authentication token. In response to receiving the add-mobile-radio authentication message from the second mobile radio, the first RNSS adds the identified second mobile radio to the talkgroup.

Methods and systems for adding a mobile radio to a talkgroup

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Kraków, Poland

Grzegorz Szyszka