Abstract: According to one general aspect, an apparatus may include a processor. In various embodiments, the processor may be configured to select either an uplink sub-frame or a special sub-frame to employ for base station-to-base station (B2B) communication in some embodiments, the processor may be configured to cause at least one user equipment (UE), associated with the apparatus, to either refrain from transmitting or substantially receiving during the selected sub-frame In various embodiments, the processor may be configured to transmit data, from the apparatus to a receiving BS, during at least a portion of the selected sub-frame.

Abstract: The invention is related to an apparatus comprising: a grouper configured to group antennas into antenna groups, if more antennas suitable for transmission are provided than pilot resources per a time slot; a rotator configured to rotate selected symbols with antenna-specific or antenna group-specific, and/or data symbol-specific phases; a transmitter configured to transmit symbols using a first antenna or antenna group of a user device and the rotated symbols using at least one second antenna or antenna group of the user device.

Abstract: A network access node selects one chunk of spectrum from a plurality of chunks of spectrum to be a primary chunk for a particular cell; transmits in the primary chunk from a broadcast channel BCH that contains information needed by a terminal to at least perform initial cell access; and uses a synchronization channel SCH to indicate which chunk of the plurality of chunks is the primary chunk. A user equipment receives a SCH in a particular chunk of spectrum; determines from it that one chunk is a primary chunk for a particular cell; tunes its receiver to a BCH in the primary chunk and uses information received on the BCH to obtain initial access to the particular cell. In various embodiments the SCH is only in the primary chunk or the SCH has some indication (e.g., cell ID or relative position of primary chunk) telling which chunk is primary.

Abstract: Structure of a multi-carrier flexible spectrum wireless cell is determined from received synchronization or broadcast channels of detected individual carriers. The determined structure is used to select an intended carrier for initial access or cell reselection to the flexible spectrum wireless cell. The structure may have carriers compatible with an earlier version (LTE/Release 8) of a communication standard and with a later version (LTE-A/Release 9). The received synchronization channels can inform of: relative positions of the individual carriers in a spectrum band of the multi-carrier structure; relative timing alignments of the received synchronization channels; contents of the received synchronization channels; and/or layer 1 cell-carrier identifiers. The synchronization channels may have a different structure as between the earlier and later versions, and the different structure is used to select the carrier that is compatible with the user equipment making the selection.

Abstract: An apparatus for enabling dual mode communication may include a processor. The processor may be configured to receive (102), via a source cell, an indication of service availability for a particular service in a target cell, determine (104) whether a current transmission format of the target cell is indicative of the particular service being available at a region proximate to an edge of the target cell, switch to communication with the target cell from communication with the source cell in response to a determination that the current transmission format of the target cell indicates that the particular service is available’ at the region proximate to the edge of the target cell, and trigger (110, 112, 130) the target cell to make an adjustment (120, 132) to the transmission format to cover cell edge area in response to a determination that the current transmission format of the target cell indicates that the particular service is not available at the region proximate to the edge of the target cell.

Abstract: An approach is provided for optimizing the timing scheme for channel state reporting. A platform determines an offset value for each of a plurality of user equipment. The offset value relates to timing between a channel state measurement point and a corresponding point for reporting of the channel state measurement. The platform further initiates signaling of the offset values to the respective user equipment.

Abstract: In accordance with the exemplary embodiments of the invention there is at least a method, apparatus, and a computer program to perform operations including receiving information descriptive of a type of radio access which a user equipment is acting on, and in response to receiving the information descriptive of a particular type of radio access, transmitting from a multiple transmit antenna user equipment so that the transmission appears, at a receiver, to have been made by a single antenna user equipment, or by a user equipment that supports antenna switching/selection.