Various embodiments are generally directed to improved channel quality information feedback techniques. In one embodiment, for example, an evolved node B (eNB) may comprise a processor circuit, a communication component for execution by the processor circuit to receive a channel quality index for a physical downlink shared channel (PDSCH), the channel quality index associated with a defined reference resource, and a selection component for execution by the processor circuit to select a modulation and coding scheme (MCS) for transmission over the PDSCH of user equipment (UE) data in one or more resource blocks, the selection component to compensate for a difference between a cell-specific reference signal (CRS) overhead of the defined reference resource and a CRS overhead of the one or more resource blocks when selecting the MCS. Other embodiments are described and claimed.

Two-phase floating-instant coordinated multipoint (CoMP) operation is disclosed. The CoMP operation may be initiated by the network via a CoMP cluster of network nodes or by user equipments (UEs) configured for uplink CoMP transmissions. The first phase is initiated after a first node to conduct a successful full listen before talk (LBT) procedure signals the other participating nodes to perform an abbreviated LBT procedure and identifies the beginning of the second phase. After success of the full and abbreviated LBT procedures, each associated node will initiate a first transmission in the first phase. The leading node determines how many of the other nodes are available for transmission and decides, based on that amount and the rules of the network, whether to continue with the CoMP operations. If enough of the other nodes are available, the participating nodes will conduct the CoMP transmissions at the identified beginning of the second phase.

Apparatus and methods for S-SSB transmission are provided. In an aspect, an S-SSS symbol is followed by a gap symbol. In another aspect, a first PSBCH symbol is followed by an S-SSS symbol. In a further aspect, the same MPR is used for the entire S-SSB, thus reducing/mitigating transient periods. For example, the S-SSS symbols in the S-SSB may be selected from a set of sequences having the same MPR as the S-PSS symbols. Alternatively, the MPR of the entire S-SSB may be selected based on a sequence ID of an S-SSS. In an aspect, additional symbols may be configured in the S-SSB to compensate for power reduction.

Disclosed is a 5G or pre-5G communication system to be provided for supporting a data transmission rate higher than that of a 4G communication system such as LTE. According to one embodiment of the present invention, a method by which a device for adjusting the interference of a plurality of base stations transmits and receives data to and from the plurality of base stations comprises: receiving channel information of a terminal connected to one or more macro base stations or to one or more small base stations from the one or more macro base stations or the one or more small base stations; receiving ABS pattern information from the one or more macro base stations; generating, for each base station, interference control information for the one or more macro base stations or the one or more small base stations on the basis of the ABS pattern information and the channel information of the terminal connected to the one or more macro base stations or to the one or more small base stations; and transmitting, to each base station, the interference control information generated for each base station.

A method of transmitting data signals comprising a shortened downlink shared channel (sPDSCH) by a base station in a wireless access system supporting an unlicensed band, the method includes performing a carrier sensing to check whether the unlicensed band is in an idle state or not; and transmitting, to a user equipment (UE), the data signals comprising the sPDSCH based on the carrier sensing via the unlicensed band during a channel occupancy time; wherein the sPDSCH is transmitted in a first time interval or a second time interval following the first time interval, wherein the first time interval starts from a starting point of the transmission of the data signal, and wherein the second time interval ends at a subframe boundary of a licensed band.

A base station apparatus capable of preventing occurrence of a communication delay when performing an inter-cell interference control using an ABS is provided. The base station apparatus is capable of performing an inter-cell interference control by setting an ABS pattern with one cycle of a predetermined number of subframes, and when the ABS pattern is to be switched, changes an MCS (Modulation and Coding Scheme) index value to be determined by an adaptive modulation control, for a communication within a predetermined period of time on or before a switching time of the switching, with respect to a subframe in which a communication with a mobile station apparatus is allowed before switching the ABS pattern.

Simultaneous dual band operation (2.4 and 5 GHz) is common in APs on the market today, and tri-band devices are expected in the market soon. Link aggregation can also be applicable to multiple air interfaces in the same band (for instance 2 independent IEEE 802.11ac/ax air interfaces at 5 GHz on 2 different 80 MHz channels). One exemplary aspect provides technology that enables significantly higher throughput and/or higher reliability for two stations (STAs) or a STA and the access point (AP) when the devices support simultaneous multi-band operation.

Interference in preamble signals and pilot signals in cooperative transmission using interference suppressing technology is avoided. A wireless apparatus for transmitting a wireless signal on which directivity control has been performed to stations in a wireless system including at least one wireless apparatus is provided with a known signal generating unit which generates a known signal to be added to the wireless signal, a weighting processing unit which performs weighting on the known signal generated by the known signal generating unit, and a wireless processing unit which transmits the known signal on which the weighting has been performed by the weighting processing unit.

This application provides a method for sending a measurement report. The method includes a terminal device receiving first configuration information and second configuration information, where the first configuration information indicates a measurement resource and the second configuration information indicates a slot format of a non-serving cell of the terminal. The method also includes the terminal device sending a measurement report to a network device, where a measurement quantity type of the measurement report is related to the slot format of the non-serving cell, and the measurement report corresponds to the measurement resource.

In order to allow even a user terminal not supporting UL simultaneous communication to communicate appropriately in a future radio communication system, the present invention provides a user terminal communicating with a plurality of communication systems, having a reception section that receives a downlink (DL) signal transmitted from each of the communication system; a transmission section that transmits an uplink (UL) signal to each of the communication system; and a control section that controls reception of the DL signal and transmission of the UL signal. The control section controls not to transmit UL signals simultaneously to different communication systems.