Abstract: Methods and systems of communication using a mobile device that include detecting a movement of the mobile device associated with transitioning from speaker phone mode to earpiece mode, or vice versa, and in response to detecting such movement, automatically transitioning the device to a different mode of operation. The detected action may be the motion and/or positioning of the device handset, such as the movement of the handset towards or away from the user's ear, and/or the placement of the handset on a surface in a face-up or face-down position. Further methods and systems for transitioning between communication pathways and security modes in response to a detected movement of the mobile device.

Abstract: Methods and systems of communication using a mobile device include detecting the voice of a user of the mobile device, and sending a request to a server for control of the floor in a group communication in response to the detected voice. Further methods of controlling floor access for a plurality of mobile devices include receiving voice commands of a user from the plurality of mobile devices, scheduling floor access for the mobile devices in response to the received voice commands, and sending messages to the mobile devices indicating the status of floor control in a group communication session. Further methods of group communication include detecting a motion of a mobile device corresponding to a user action, in response to the detected motion, initiating a half-duplex group communication application, and displaying visual feedback associated with the half-duplex group communication application on a display screen of the mobile device.

Abstract: Methods and systems for controlling group communications using a mobile device includes detecting a motion of the mobile device corresponding to a user placing the device on a surface, maintain a communication session with another mobile device while the user is detected in proximity to the first mobile device, and entering a non-active communication mode when the user is not detected in proximity to the device. The communication session may be maintained for a time-out period before entering the non-active mode. Further methods and systems include transitioning to a non-active communication mode in response to detecting a motion of the mobile device corresponding to a user placing the device on a surface.

Abstract: Methods and systems of communication using a mobile device include communicating with other mobile devices over an initial communication channel, detecting a first motion of the mobile device moving from a first position to a second position, establishing a second communication channel with the other mobile devices in response to the detected first motion, and communicating with the other mobile devices over the second communication channel. In an example, the initial communication may be a half-duplex communication channel, and the second communication channel may be a full-duplex communication channel. In another example, the initial communication may be a full-duplex communication channel, and the second communication channel may be a half-duplex communication channel.

Abstract: Methods and systems of communication using a mobile device include communicating with other mobile devices over an initial communication channel, detecting a first motion of the mobile device moving from a first position to a second position, establishing a second communication channel with the other mobile devices in response to the detected first motion, and communicating with the other mobile devices over the second communication channel. In an example, the initial communication may be a half-duplex communication channel, and the second communication channel may be a full-duplex communication channel. In another example, the initial communication may be a full-duplex communication channel, and the second communication channel may be a half-duplex communication channel.

Abstract: Methods and systems for controlling group communications using a mobile device includes detecting a motion of the mobile device corresponding to a user placing the device on a surface, maintain a communication session with another mobile device while the user is detected in proximity to the first mobile device, and entering a non-active communication mode when the user is not detected in proximity to the device. The communication session may be maintained for a time-out period before entering the non-active mode. Further methods and systems include transitioning to a non-active communication mode in response to detecting a motion of the mobile device corresponding to a user placing the device on a surface.

Abstract: Methods and systems of communication using a mobile device include detecting the voice of a user of the mobile device, and sending a request to a server for control of the floor in a group communication in response to the detected voice. Further methods of controlling floor access for a plurality of mobile devices include receiving voice commands of a user from the plurality of mobile devices, scheduling floor access for the mobile devices in response to the received voice commands, and sending messages to the mobile devices indicating the status of floor control in a group communication session. Further methods of group communication include detecting a motion of a mobile device corresponding to a user action, in response to the detected motion, initiating a half-duplex group communication application, and displaying visual feedback associated with the half-duplex group communication application on a display screen of the mobile device.

Abstract: Methods and systems of communication using a mobile device that include detecting a movement of the mobile device associated with transitioning from speaker phone mode to earpiece mode, or vice versa, and in response to detecting such movement, automatically transitioning the device to a different mode of operation. The detected action may be the motion and/or positioning of the device handset, such as the movement of the handset towards or away from the user's ear, and/or the placement of the handset on a surface in a face-up or face-down position. Further methods and systems for transitioning between communication pathways and security modes in response to a detected movement of the mobile device.