Blackberry Corporation

Motorola Mobility LLC

Telefonica Digital Limited

David Nigel Freeman

Zhijun Cai

Yiping Wang

Yajun Zhu

Rene Waraputra Purnadi

Chandra Sekhar Bontu

Yi Song

Andrew Mark Earnshaw

Jun J Li

Jonathan A Gibbs

Richard C Lucas

Jun Li

A method at a user equipment for hybrid automatic repeat request (HARQ) operation, the user equipment operating on a primary carrier having a first duplex mode and on at least one secondary carrier having a second duplex mode, the method using HARQ timing of the first duplex mode if the timing of the first duplex mode promotes acknowledgement opportunities over using HARQ timing of the second duplex mode; and using HARQ timing of the second duplex mode if the timing of the second duplex mode promotes acknowledgement opportunities over using HARQ timing of the first duplex mode.

Method and system for HARQ operation and scheduling in joint TDD and FDD carrier aggregation

Systems, methods, and apparatuses for energy saving in heterogeneous wireless communication networks are provided. The small cell (e.g., pico cell, relay cell, femto cell) may adjust its transmit power based on the requirement of user equipments (UEs) in the cell's coverage. The small cell may detect a UE entering its coverage with or without assistance from the macro cell. An appropriate small cell may be selected to serve the UE based on its traffic load when the UE is located in the coverage of multiple small cells. The small cell may also transmit auxiliary synchronization signals to reduce the association time for the UE.

Wireless communication in heterogeneous networks

A method and computer programs for controlling relay in a group communication, including transmitting, by an originating mobile computing device (OUE) to a set of recipient mobile computing devices (RUE, . . . RUE) members of a communication group, a message; receiving the message by at least some of the recipient mobile computing devices that individually send an acknowledge message to the rest of the mobile computing device members of the group; receiving, by one of the recipient mobile computing devices (RUEi) which has not received the message from the originating mobile computing device but has received at least two acknowledge messages from potential relaying mobile computing devices, three different parameters from each of the potential relaying mobile computing devices; and applying, by the recipient mobile computing device, an algorithm accounting for the three parameters to select which relaying mobile computing devices relays the communications initiated by the originating mobile computing device.

Method for controlling relay in a group communication and computer programs thereof

Data is communicated between a network node and a user equipment in a first frame according to a first uplink-downlink configuration. In response to a configuration change that causes a second frame following the first frame to be according to a second, different uplink-downlink configuration, an acknowledgement indication for the data is sent in the second frame.

Communication in the presence of uplink-downlink configuration change

A controller receives information relating to at least one of multiple small cells. Responsive to the received information, the controller coordinates allocation of resources for use by the small cells in communicating data with respective user equipments (UEs), where the coordinating of the allocation of resources reduces interference among the small cells.

Coordinating allocation of resources for use by small cells

An apparatus and method for synchronization between uncoordinated Time Division Duplex (TDD) communication networks includes a first step () of measuring an interference level on channels available to a base station. A next step () includes choosing the channel having the lowest interference level. A next step () includes determining that the interference is from a base station. A next step () includes calculating an interference profile over the frame cycle. A next step () includes establishing a peak interference level. A next step () includes aligning the base station frame timing in response to the peak interference level.

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Basingstoke, United Kingdom

David Nigel Freeman