Systems, apparatus, user equipment (UE), evolved node B (eNB), computer readable media, and methods are described for uplink grants and hybrid automatic repeat requests (HARQ) in communications systems. Some embodiments operate to determine that an unlicensed first channel is idle based on a sensing of the first channel for a first period of time. Such an embodiment may then generate a reservation signal on the first channel and an uplink grant for a first user equipment (UE). After the uplink grant is communicated, the embodiment senses the first channel to detect a physical uplink shared channel (PUSCH) transmission associated with the uplink grant. A HARQ acknowledgment or negative acknowledgement may be sent in various embodiments following the sensing.

Provided are a networking signal sending method and device for a positioning network. The method includes: determining a networking mode of the positioning network according to an application scene, wherein the networking mode includes independent networking of the positioning network and joint networking of the positioning network and a communication network; and configuring a positioning base station of the positioning network, or the positioning base station and a communication base station according to the networking mode, wherein the positioning base station is used for sending a positioning signal or the positioning signal and a synchronization signal, and the communication base station is used for sending the synchronization signal.

A method for selecting a subset of devices from a plurality of devices in a wireless network to perform: a first function comprising transmitting, receiving and/or processing a first radio frequency signal in a first frequency band for detecting atmospheric conditions; and a second function comprising transmitting, receiving and/or processing a second radio frequency signal in a second frequency band, at least partially overlapping with the first frequency band, for performing network communications; wherein the first and the second function are performed during a time period; and wherein the time period comprises a first subset of timeslots and a second subset of timeslots; wherein the method comprises: selecting the subset of devices based on a physical location of the devices relative to an area in which atmospheric conditions are to be monitored; assigning the first subset of timeslots to each of the selected devices to perform the first function, wherein the first subset of timeslots is assigned based on a priority value associated with the relative priority of performing the first function compared to the second function; assigning the second subset of timeslots to each of the selected devices to perform the second function; controlling the selected devices to execute the first function and the second function during the assigned timeslots respectively.

Disclosed are techniques for wireless communication. In an aspect, a receiver user equipment (UE) receives, from a transmitter UE, a sidelink reference signal over a sidelink established with the transmitter UE, and transmits a sidelink timing adjust (TA) command to the transmitter UE based on the sidelink reference signal, the sidelink TA command requesting the transmitter UE to adjust a sidelink transmit time of the transmitter UE. In an aspect, a transmitter UE transmits, to a receiver UE, a sidelink reference signal over a sidelink established with the receiver UE, and receives a first sidelink TA command from the receiver UE based on the sidelink reference signal, the sidelink TA command requesting the transmitter UE to adjust a sidelink transmit time of the transmitter UE.

Methods and apparatuses are provided for wireless communication. Control symbols are mapped to a plurality of resource element groups (REGs) which is not assigned to a physical channel format indication channel (PCFICH) or a physical hybrid automatic repeat request indicator channel (PHICH). The REGs are allocated based on a time first manner. The mapped control symbols are transmitted on a packet dedicated control channel (PDCCH).

According to some embodiments, a method in a wireless device configured to use a first cell for wireless access network (WAN) operation comprises receiving, from a network node, an identification of a second cell that the wireless device may use for device-to-device (D2D) operation. The wireless device determines a reference cell associated with an uplink carrier used for D2D operation in the second cell. The method further comprises measuring a downlink reference signal of the reference cell, and performing one or more tasks related to D2D communication on the uplink carrier based on the measurement of the downlink reference signal.

An apparatus and method for transmitting reference signals in a communication system are provided. The method includes transmitting common reference signals of a first type from a transmitter to a plurality of receivers; transmitting receiver-specific reference signals of a second type from a plurality of distributed ports to a subset of the plurality of receivers; wherein the common reference signals of the first type and the receiver-specific reference signals of the second type are allocated to different resources from one another, and wherein the communication system includes the transmitter and the plurality of receivers and the transmitter uses a plurality of central ports and the plurality of distributed ports to transmit to the plurality of receivers.

Provided are a user equipment (UE), a base station and respective transmission/reception methods for UE and base station. The UE comprises circuitry which, in operation, determines, based on a type of a transmission, a time interval between an outer boundary of a transient period for ramping of power to start or finish the transmission and a symbol on which a signal included in the transmission is to be transmitted; and a transceiver which, in operation, transmits the signal on the symbol; wherein the time interval and a time window for clear channel assessment (CCA) are non-overlapping.

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method for transmitting uplink control information and to a device therefor, and relates to a method comprising the steps of: selecting one uplink control channel resource corresponding to a plurality of HARQ-ACKs, from a plurality of uplink control channel resources; and transmitting a bit value corresponding to the plurality of HARQ-ACKs, by using the selected uplink control channel resource. The present invention also relates to a device for the method.

Techniques of beamforming in reference signal (RS) transmissions, applicable to frequency ranges including frequencies between 52.6 GHz and 71 GHz, are described. Such techniques may include determining a communication channel is unoccupied for an initial duration, determining a number of communication slots of the communication channel to defer for transmission, and counting one or more communication slots of the communication channel that are not in use. The techniques may include determining the number of counted one or more communication slots is not equal to the determined number of communication slots of the communication channel to defer, and transmitting one or more data units based on the determination that the number of the counted one or more communication slots is not equal to the determined number of communication slots of the communication channel to defer.