Motorola Solutions, Inc.

Motorola Corporation

Roberto A Perez

David P Gurney

Apoorv Chaudhri

Yadunandana N Rao

Eric Johnson

Scott A Arnold

Jeff S Anderson

James E Eastwood

Zhiyi Zhou

Scott Arnold

A method for providing a customized user interface for group communication at a communication device is provided. An electronic processor determines a list of communication groups with which a user identifier of the communication device is registered and identifies a communication group type for each communication group in the list based on service capabilities of the respective communication group. The electronic processor assigns a set of communication group types for the user identifier and determines a type of group communication application to be configured at the communication device. The electronic processor then generates user interface elements as a function of the set of communication group types and the type of group communication application and configures the group communication application including the user interface elements at the communication device for supporting group communication.

Method for providing a customized user interface for group communication at a communication device

Allocation of channels in a dedicated frequency spectrum on a secondary basis. A direct mode communication request () from a first wireless communication device () can be received and processed to determine whether there are one or more secondary communication channels over which direct mode communication may be implemented between the first wireless communication devices and other wireless communication devices () without violating at least one communication policy for the secondary communication channel. Use of a secondary communication channel can be assigned or denied. In addition, a direct mode communication request can be communicated from a wireless communication device to a base transceiver station () identifying one or more other communication devices for which direct mode communication is requested.

Allocation of channels in a dedicated frequency spectrum on a secondary basis

A method and system for synchronization of link layer windows in a wireless communications system is disclosed. At a transmitter in the wireless communications system, the transmitter transmits a plurality of frames in a transmitter's link layer window, wherein each frame comprises segments and sends a request for an acknowledgement of the plurality of frames to a receiver. Then the transmitter determines a last transmitted segment of an eldest frame of the plurality of frames in the transmitter's link layer window, if a response to the request is not received within a specified time period and sets a synchronization indicator in the determined last transmitted segment of the eldest frame. Finally, the transmitter transmits the determined last transmitted segment of the eldest frame with the synchronization indicator set to the receiver.

Method and system for synchronization of link layer windows

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Miramar, FL, United States of America

Roberto A Perez