A network node, a communication device and methods therein, for handling dynamic uplink/downlink, UL/DL, subframe configurations when operating in Time Division Duplex, TDD. The network node obtains capability information indicating whether the communication device supports carrier aggregation and/or frequency band combination, and also indicating whether the communication device supports simultaneous reception and transmission of signals on different carriers or frequency bands. The network node then determines UL/DL subframe configurations for the communication device based on the obtained capability information such that the communication device is to use different UL/DL subframe configurations for different carriers or frequency bands, when certain conditions are fulfilled.

A communication method and system for converging a fifth generation (5G) communication system for supporting higher data rates beyond a fourth generation (4G) system with a technology for internet of things (IoT) are provided. The communication method and system may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method by a terminal for determining frequency resources in a cellular network is provided.

A transmit end sends a physical layer protocol data unit (PPDU) to a receive end, where a bandwidth of the PPDU is P×10 MHz. The PPDU includes a first part of fields and a second part of fields. A quantity of tones per 10-MHz tone distribution corresponding to the first part of fields is 64, and a tone spacing is 156.25 kHz. A quantity of tones per 10-MHz tone distribution corresponding to the second part of fields is 128, and a tone spacing is 78.125 kHz. The corresponding method is applicable to 10 MHz, 20 MHz, 40 MHz, 60 MHz, so that a transmission bandwidth is increased compared with that of 802.11p, as well as a system throughput. The transmit end may transmit data by some RUs to increase a data transmission distance, or may simultaneously transmit data of different services by a plurality of RUs to improve data transmission efficiency.

A first V2X wireless device may transmit a first discovery request to a V2X network entity. The a V2X network entity may comprise a first wireless device identifier and a V2X value. The V2X value may indicate a V2X communication capability. The first V2X wireless device may receive a first discovery response from the V2X network entity. The first discovery response may comprise a first discovery code. The first discovery code may correspond to at least the V2X value. The first V2X wireless device may perform a discovery procedure. The discovery procedure may employ the first discovery code. The first V2X wireless device may communicate, with a second V2X wireless device by employing the V2X communication capability, one or more packets in response to the discovery procedure connecting the first V2X wireless device with the second V2X wireless device.

A user equipment (UE) can reserve shared spectrum between two wireless protocols upon the request from a tower. For example, an enhanced node B (eNB or eNodeB) transmits a message to associated UEs including a set of candidate UEs, a length of time to reserve, and a frequency band to use. UEs perform medium sensing on the specified spectrum if a UE finds its identifier in the set of candidate UEs. Candidate UEs transmit a clear to send (CTS) message with channel reservation information if the medium is idle. A result of the success or failure of the CTS transmission attempt is sent back to the eNB. Upon receiving the feedback information from the UEs, the eNB starts sending data to those UEs that sent the positive feedback on the channel reservation.

Techniques for wireless communication are described. One method includes identifying a data structure associated with an uplink pilot time slot (UpPTS) and a demodulation reference signal structure associated with the UpPTS, where the UpPTS occurs during a portion of a subframe, and communicating with a second device based at least in part on the data structure and the demodulation reference signal structure.

Systems and methods are described, and one method includes allocate a continuous duration within a TDMA scheme, for asynchronous NOMA transmissions, and extending from an allocation start time to an allocation termination time, formed of contiguous time slots of the TDMA scheme, and included providing to asynchronous NOMA user terminals an indication of the allocation start time and termination time, indicating allowance to perform asynchronous NOMA transmissions within a start time constraint that starts of the asynchronous NOMA transmissions do not precede the allocation start time, and terminations of the asynchronous NOMA transmissions do not succeed the allocation termination time.

According to various embodiments, an electronic device may include: a communication processor, at least one radio frequency integrated circuit (RFIC) connected to the communication processor, and at least one antenna, each of which is connected to the at least one RFIC via at least one radio frequency front-end (RFFE) circuit, and is configured to transmit or receive a signal corresponding to at least one communication network, wherein the communication processor is configured to: identify whether target power corresponding to a primary component carrier (PCC) exceeds maximum transmission power of the electronic device while performing uplink carrier aggregation (CA), and based on identifying that the target power corresponding to the PCC exceeds the maximum transmission power, set a first transmission power of the PCC to a first power less than the maximum transmission power and set a second transmission power of at least one secondary component carrier (SCC) to a second power less than the first power, based on a first spectral efficiency corresponding to the first transmission power of the PCC and a second spectral efficiency corresponding to the second transmission power of the at least one SCC.

One aspect of a user terminal according to the present invention includes: a receiving section that receives a downlink shared channel transmitted from a plurality of transmission/reception points; and a control section that controls transmission of a transmission confirmation signal for the downlink shared channel, based on at least one of a count value of DL assignment jointly controlled between the plurality of transmission/reception points, and an index of the transmission/reception points and a count value of DL assignment separately controlled between the plurality of transmission/reception points.

The apparatus is configured to receive, from a second UE, a set of DMTCs, receive information indicating a DMTC of the set of DMTCs to be used for measuring discovery signals, and measure discovery signals received from the second UE based on the indicated DMTC. The apparatus may be configured to receive additional information regarding at least one of a carrier, a BWP, or a resource pool through which the discovery signals will be transmitted and a numerology used by the discovery signals and communicate through at least one of a PSSCH or PSCCH with the second UE through a first carrier, BWP, resource pool, or numerology and wherein the channel measurements performed on the discovery signals received from the second UE based on the indicated DMTC are performed on a second carrier, BWP, resource pool, or numerology.