Abstract: An intermediate station receives device Random Access Channel (RACH) transmissions from a plurality of machine type communication (MTC) devices and transmits at a bulk RACH transmission to a base station where the bulk RACH transmission represents the RACH transmissions from at least two of the device RACH transmissions.

Abstract: An origination device (e.g., a base station) combines and encodes first user data and second user data, having similar QoS requirements, to generate a multiuser packet. In some cases, the origination device dual-encodes the multiuser packet. The multiuser packet is transmitted to one or more signal forwarding devices that each serve at least one of the users associated with the data contained in the multiuser packet. The signal forwarding device decodes the multiuser packet to obtain the first and second user data. The signal forwarding device transmits at least one portion of the multiuser packet, as single-encoded signals, to one or more appropriate destination devices (e.g., UE devices).

Abstract: A base station (eNB) determines device-to-device (D2D) transmission parameters for signal transmission over a D2D communication link between a first user equipment (UE) device and a second UE device. The eNB instructs the first UE device to transmit a reference signal that is received by the second UE device. The second UE device reports D2D channel characteristic information indicative of the received reference signal. Based on the D2D channel characteristic information, the base station determines the D2D transmission parameters and provides the parameters to the first UE device.

Abstract: An unmanned aerial vehicle (UAV) user equipment (UE) device determines uplink transmission power based on a reduced power factor in response to receiving an interference indicator from a neighboring base station. The reduced power factor results in an uplink transmission power for an uplink signal that is less than the uplink transmission power based on a standard power factor.

Abstract: Control information (126) related to the reception of data (128) within a subframe (116) is transmitted over multiple subframes (113, 116) over multiple carrier (107, 108) from communication system infrastructure (102). A controller (134) in a mobile wireless communication device (104) reconstructs the control information (126) received over multiple subframes (113, 116) based on at least some control information (130) in a first physical control channel (118) in a first subframe (113) transmitted over a first carrier (107) and at least some other control information (132) in a second physical control channel (120) in a second subframe (116) transmitted over a second carrier (108).

Abstract: A base station transmits a transmission signal to a user equipment (UE) device and a machine type communication (MTC) device. The transmission signal includes a plurality of data subcarriers conveying UE data for the UE device where at least a portion of the data subcarriers convey at least some of the UE data on a UE data layer and convey MTC data for the MTC device on a MTC data layer. The transmission signal also includes a plurality of control subcarriers conveying geographic location dependent control information applying to reception of the data subcarriers by the UE device and by the MTC device. The control subcarriers also convey data layer control information specific to each device.

Abstract: An unmanned aerial vehicle (UAV) calculates an estimated uplink interference caused by the UAV at a neighboring cell based on a downlink signal received from the neighboring cell. Based on the estimated uplink interference, the UAV monitors downlink messages transmitted from the neighboring cell. If the uplink interference experienced by the neighboring cell exceeds an interference threshold, the neighboring cell transmits a downlink message, which includes an uplink interference indicator, to the UAV. Upon receipt of the uplink interference indicator, the UAV transmits a measurement report, including the uplink interference indicator, to the serving cell. In some cases, the serving cell transmits an interface availability message and a handover command to the UAV based at least partially on the measurement report. The serving cell may maintain a mobility history for the neighboring cell, which indicates a history of uplink interference problems and/or UAV handover availability for the neighboring cell.

Abstract: Communication equipment communicates in a licensed frequency band using a licensed band physical channel structure (licensed structure) and communicates in an unlicensed frequency communication band using an unlicensed band physical channel structure (unlicensed structure) where the unlicensed structure includes at least the same symbol times and subcarrier frequency divisions as in the licensed structure. The symbol times and subcarriers form a plurality of time-frequency communication resource elements. A set of symbol times and subcarrier frequency divisions form a licensed reference subset of communication resource elements that are allocated for reference signal transmission in the licensed structure. The same set of symbol times and subcarrier frequency divisions form an unlicensed reference subset of communication resource elements that are allocated for reference signal transmission in the unlicensed structure.

Abstract: In order to improve the wake-up signal (WUS) detection performance for MTC UE devices, a set of neighboring base stations coordinate to simultaneously transmit a common wake-up signal (CWUS). The CWUS is transmitted from the base stations utilizing a common set of time/frequency resources. A user equipment (UE) device receives the CWUSs from a plurality of the base stations and combines the received CWUSs. In some examples, the UE device coherently combines the received CWUSs. The UE device utilizes the combined CWUSs to determine when the UE device may skip monitoring of the Paging Occasions within a Paging Time Window (PTW) to conserve power.

Abstract: An unmanned aerial vehicle (UAV) calculates an estimated uplink interference caused by the UAV at a neighboring cell based on a downlink signal received from the neighboring cell. Based on the estimated uplink interference, the UAV monitors downlink messages transmitted from the neighboring cell. If the uplink interference experienced by the neighboring cell exceeds an interference threshold, the neighboring cell transmits a downlink message, which includes an uplink interference indicator, to the UAV. Upon receipt of the uplink interference indicator, the UAV transmits a measurement report, including the uplink interference indicator, to the serving cell. In some cases, the serving cell transmits a handover command to the UAV based at least partially on the measurement report. The serving cell may also maintain a mobility history for the neighboring cell. The mobility history indicates a history of uplink interference problems and/or UAV handover availability for the neighboring cell.

Abstract: A first transceiver station broadcasts information to machine type communication (MTC) devices in the coverage area of the transceiver station using layered modulation where MTC devices receiving the broadcast above a signal quality threshold can recover the MTC information by applying a high modulation order. MTC devices receiving the broadcast below the quality threshold, recover a portion of the MTC information by applying a lower modulation order and recover the remaining portion of the MTC information transmitted from a second transceiver.

Abstract: A base station broadcasts information to machine type communication (MTC) devices in the coverage area of the base station using multiple transmissions with layered modulation. Each transmission includes a different sequence of bits representing the information. A MTC device receiving the signals for the transmissions at a sufficiently high quality can recover the information by using a high modulation order on one of the transmissions. A MTC device receiving the signals of the transmissions at less than the sufficient quality can receive the information by applying a lower modulation order to multiple transmissions.

Abstract: In the event that a first user equipment (UE) device is unable to decode a packet received from a base station that provides Point-to-Multipoint (PTM) compatible services to UE devices within a service area (e.g., cell) of the base station, the first UE device transmits a request for retransmission of the packet. In one example, the request for retransmission is transmitted to one or more neighboring UE devices via a device-to-device (D2D) transmission. In response to the request for retransmission, one or more of the neighboring UE devices, which were able to successfully decode the same packet, retransmit the packet to the first UE device via a D2D communication link.

Abstract: A set of neighboring base stations coordinate to simultaneously transmit a common resynchronization signal via a Common Synchronization Channel (CSCH). The common resynchronization signal is transmitted from the base stations utilizing a common sequence and a common set of time/frequency resources. A user equipment (UE) device receives the common resynchronization signals from a plurality of the base stations and combines the received common resynchronization signals. In some examples, the UE device coherently combines the received common resynchronization signals. Once the received signal strength of the combined received common resynchronization signals exceeds a threshold level, the UE device utilizes the combined received common resynchronization signals to obtain resynchronization.

Abstract: A base station includes a controller that performs multicast service SC-PTM transmission, and a transmitter that transmits SC-PTM configuration information related to a configuration of the SC-PTM transmission via a SC-PTM control channel, which is a logical channel different from a MCCH, and transmits multicast data via a traffic channel for the SC-PTM transmission. Each of the SC-PTM control channel and the traffic channel is mapped on a DL-SCH. The transmitter transmits a SIB related to the SC-PTM control channel via a BCCH, transmits first resource allocation information for transmitting the SC-PTM configuration information via a PDCCH, where a predetermined RNTI for the SC-PTM control channel is applied to transmission of the first resource allocation information, and transmits second resource allocation information for transmitting multicast data by the SC-PTM transmission via the PDCCH.

Abstract: A set of neighboring base stations coordinate to transmit a cell-specific common resynchronization signal via a Common Synchronization Channel (CSCH). At least one neighboring base station transmits the cell-specific common resynchronization signal by a timing advance value before a serving base station transmits the cell-specific common resynchronization signal. A user equipment (UE) device receives the cell-specific common resynchronization signals from the base stations and combines the received cell-specific common resynchronization signals. In some examples, the UE device coherently combines the received cell-specific common resynchronization signals. Once the received signal strength of the combined received cell-specific common resynchronization signals exceeds a threshold level, the UE device utilizes the combined received cell-specific common resynchronization signals to obtain resynchronization.

Abstract: A mobile communication system comprises a radio base station configured to manage a cell having a first coverage and a second coverage which is a portion enhanced more than the first coverage; a radio relay node configured to receive, from the radio base station, a plurality of data having different destination radio terminals from each other, and transmit the plurality of data simultaneously to a plurality of radio terminals in the second coverage; and a radio terminal configured to be located in the second coverage, receive one or a plurality of control signals transmitted from the radio base station or the radio relay node. The radio terminal is configured to perform a process of receiving data addressed to own radio terminal from the radio relay node based on the one or the plurality of control signals.

Abstract: A user equipment (UE) device is scheduled to transmit an uplink data transmission to its serving base station. The uplink data transmission includes a special subframe that has a different subframe structure than a subframe structure used by at least one other UE device being served by the serving base station. For example, the special subframe includes a blanked portion of the first symbol of the special subframe and a higher Reference Signal symbol density when compared to the subframe structure used by other UE devices. A target base station receives and decodes the uplink data transmission, utilizing the features of the special subframe to acquire and estimate the uplink channel between the UE device and the target base station. After decoding the uplink data transmission, the UE device is handed over from the serving base station to the target base station.

Abstract: An origination device (e.g., a base station) receives relaying information from a signal forwarding device in a grant or a broadcast message. The relaying information can be information pertaining to channel conditions and/or quality (e.g., a Channel Quality Indicator) of a first communication link between the signal forwarding device and a destination device, and/or an encoding rate based on channel conditions associated with the first communication link. The origination device utilizes the relaying information to determine a first set of encoding parameters that correspond to channel conditions associated with the first communication link between the signal forwarding device and a destination device. The origination device encodes a first set of data according to the first set of encoding parameters and transmits the encoded first set of data to the signal forwarding device. The signal forwarding device transmits the encoded first set of data to the destination device.

Abstract: A Wake-Up Signal (WUS) is transmitted at a first carrier frequency and at first system timing to a communication device and a paging message is transmitted to the communication device at a second carrier frequency and at a second system timing where the WUS indicates whether the paging message will be transmitted to the communication device. The communication device awakes from sleep state (sleep mode) and receives a resynchronization signal transmitted at the first carrier frequency.