Abstract: Systems, methods, apparatuses, and computer program products for enabling multi-beam PRACH. One method may include transmitting a physical random access channel preamble based upon at least two different transmission beams in the same random access channel occasion; and receive a message configured to indicate a preferred transmission beam of the transmission beams used with the physical random access channel preamble.

Abstract: According to an example aspect of the present invention, there is provided an apparatus, such as a user equipment, configured to transmit information in a physical uplink shared channel direction using, selectably, a first waveform or a second waveform, the second waveform having lower peak to average power ratio than the first waveform, provide, to a network node controlling a cell in which the apparatus is attached, first and second power headroom information, and select to either continue using the first waveform on the physical uplink shared channel, or to switch to using the second waveform on the physical uplink shared channel.

Abstract: According to an example aspect of the present invention, there is provided an apparatus, such as a user equipment, configured to transmit information in a physical uplink shared channel direction using, selectably, a first waveform or a second waveform, the second waveform having lower peak to average power ratio than the first waveform, provide, to a network node controlling a cell in which the apparatus is attached, first and second power headroom information, and select to either continue using the first waveform on the physical uplink shared channel, or to switch to using the second waveform on the physical uplink shared channel.

Abstract: There is provided a method comprising determining, at a first access point, whether a carrier from a plurality of carriers is a primary listen-before-talk carrier or a secondary listen-before-talk carrier and providing information using the carrier, said information comprising an indication of whether the respective carrier is a primary listen-before-talk carrier or a secondary listen-before-talk carrier.

Abstract: Methods, apparatuses, systems, and computer program products for transmitting/receiving scheduling assignment(s) (SAs) are provided. One method is directed to including a short version of a target ID (i.e., short ID) in a SA. The method may also include transmitting the SA including the short ID to one or more monitoring UE(s). The monitoring UE(s) may then compare the short ID to target ID(s) being monitored. The corresponding data from the SA may be decoded if there is a match between the short ID and any of the target ID(s).

Abstract: An aspect of this invention is a definition of a set of reused channel state information reference signal (CSI-RS) resources among transmission points, which can be lower power nodes, for intra-cell coordinated multi-point (CoMP) operation. Separate CSI-RS resources are defined for each transmission point for sporadic separate measurements to be made by user equipment. The sporadic measurements may be implemented with low additional overhead, and are used for generating potentially simplified CSI feedback to an evolved NodeB that enables adapting shared channel reuse and also potentially making related channel quality indicator (CQI) compensation.

Abstract: According to an example embodiment of this application, a method may include by a processor, processing communication with a network element, the communication comprising one or more frames, wherein each frame comprises at least two subframes; receiving a signaling indicating definition of subframe groups; receiving a power control command for controlling a transmission power; and applying the power control command.

Abstract: A method including receiving information on a first channel on preconfigured channel elements in a transmission time interval of a wireless communication system, wherein the information on the first channel includes first system information and downlink control information related to a transmission of second system information on a second channel in the transmission time interval. The method may further include receiving the second system information based on the downlink control information.

Abstract: There is provided a method comprising determining, at a first access point, whether a carrier from a plurality of carriers is a primary listen-before-talk carrier or a secondary listen-before-talk carrier and providing information using the carrier, said information comprising an indication of whether the respective carrier is a primary listen-before-talk carrier or a secondary listen-before-talk carrier.

Abstract: A technique may include transmitting, by a user device in a proximity-based services wireless network via a first time-frequency resource identified by a first logical time index within N logical time resources and a first logical frequency index in the range from 0 to M?1, a first occurrence of a signal for the user device during a transmission period; determining a time index adjustment associated with the first logical frequency index; determining, by the user device, a second logical time index of a second time-frequency resource for transmitting from the user device a second occurrence of the signal within the transmission period, the second logical time index being determined based on the first logical time index and the time index adjustment associated with the first logical frequency index; and transmitting, by the user device via the second time-frequency resource, a second occurrence of the signal during the transmission period.

Abstract: Systems and techniques for resource allocation for scheduling assignment. A scheduling assignment is transmitted and/or received using resources that are divided into first and second scheduling assignment resources. A dual resource mapping in accordance with an scheduling assignment index is performed to define first and second resources for transmission and/or reception of the scheduling assignment.

Abstract: One embodiment is directed to a method for operating base stations in a heterogeneous network. The method may include receiving, by a first base station, an indication for a second base station to use flexible time division duplex mode (502), assessing an amount of interference that will be caused by the second base station (504)-(508), deciding how to adjust a transmission power of the second base station (509), and sending the second base station a request to adjust the transmission power (510).

Abstract: In accordance with an example embodiment of the present invention, a method comprises determining at a base station an activity level, and selecting an availability mode based at least in part on the activity level, wherein the availability mode is one of a full-availability mode, a semi-availability mode and a minimum-availability mode. The method also comprises configuring radio resources for at least the minimum-availability mode and switching to the selected availability mode.

Abstract: Various communication systems may benefit from joint precoder and receiver designs for multi-user multiple-input and multiple-output. For example, machine-type communication in long term evolution communication systems may benefit from such designs. A method can include determining channel status information of a current connection. The method can also include indicating the channel status information to a transmitter. The method can further include receiving weight values for a first receiver filter, in response to the channel status information. The method can also include defining the first receiver filter based on the weight values. The method can further include determining effective channel status information of a current connection, and interference from other transmitters. The method can also include defining a second receiver filter based on the weight values, the effective channel status information of the current connection, and the interference.

Abstract: Systems and techniques for resource allocation for scheduling assignment. A scheduling assignment is transmitted and/or received using resources that are divided into first and second scheduling assignment resources. A dual resource mapping in accordance with an scheduling assignment index is performed to define first and second resources for transmission and/or reception of the scheduling assignment.

Abstract: In accordance with an example embodiment of the present invention, a method is disclosed that comprises measuring a first link quality of a first link based at least in part on a first power value; measuring a second link quality of a second link based at least in part on a second power value; and determining a suitable device-to-device (D2D) mode for a D2D connection based at least in part on the first link quality, the second link quality, and one or more D2D user equipment (UE) constraints.

Abstract: A technique may include transmitting, by a user device in a proximity-based services wireless network via a first time-frequency resource identified by a first logical time index within N logical time resources and a first logical frequency index in the range from 0 to M?1, a first occurrence of a signal for the user device during a transmission period; determining a time index adjustment associated with the first logical frequency index; determining, by the user device, a second logical time index of a second time-frequency resource for transmitting from the user device a second occurrence of the signal within the transmission period, the second logical time index being determined based on the first logical time index and the time index adjustment associated with the first logical frequency index; and transmitting, by the user device via the second time-frequency resource, a second occurrence of the signal during the transmission period.

Abstract: Various communication systems may benefit from joint precoder and receiver designs for multi-user multiple-input and multiple-output. For example, machine-type communication in long term evolution communication systems may benefit from such designs. A method can include determining channel status information of a current connection. The method can also include indicating the channel status information to a transmitter. The method can further include receiving weight values for a first receiver filter, in response to the channel status information. The method can also include defining the first receiver filter based on the weight values. The method can further include determining effective channel status information of a current connection, and interference from other transmitters. The method can also include defining a second receiver filter based on the weight values, the effective channel status information of the current connection, and the interference.

Abstract: Methods, apparatuses, systems, and computer program products for transmitting/receiving scheduling assignment(s) (SAs) are provided. One method is directed to including a short version of a target ID (i.e., short ID) in a SA. The method may also include transmitting the SA including the short ID to one or more monitoring UE(s). The monitoring UE(s) may then compare the short ID to target ID(s) being monitored. The corresponding data from the SA may be decoded if there is a match between the short ID and any of the target ID(s).

Abstract: A network determines that a first radio node communicating on a radio resource with a second radio node is interfering with a third radio node communicating on the radio resource with the network. The network manages the interference by controlling transmit power of at least one of the first radio node and the third radio node. It may be by sending a command that indicates an amount by which the first or second radio node is to decrease its transmit power; and/or that indicates an amount by which the third radio node is to boost its transmit power. The network can measure a sounding signal it triggers from the first radio node, measure and compare to a threshold that guarantees a QoS for the third radio node, and compute appropriate backoff or boost values. The first and second radio nodes may be using device-to-device communications or a femto network.