The present disclosure describes methods, systems and devices for transmitting initial access information from a base station to a user equipment (UE). One method includes notifying, by the base station, the UE to support at least one subcarrier spacing (SCS); communicating, by the base station, a subcarrier offset to the UE; and configuring, by the base station, a multiplexing pattern between initial access information. Another method includes receiving, by the UE from the base station, notification to support at least one subcarrier spacing (SCS); receiving, by the UE from the base station, a communication comprising a subcarrier offset; and receiving, by the UE from the base station, a configuration for a multiplexing pattern between initial access information.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive one or more reference signals from multiple cells and may perform measurements of the reference signals. The UE may transmit, based on the measurements, a measurement report associated with a first cell and a second cell of the multiple cells, where the measurement report includes at least a first field that indicates a first identifier corresponding to the first cell and a second field that indicates a second identifier corresponding to the second cell. The measurement report may further include a resource indicator for a first reference signal of the one or more reference signals and a second resource indicator for a second reference signal of the one or more reference signals, where the first resource indicator is associated with the first identifier and the second resource indicator is associated with the second identifier.

Provided is a method for providing a time synchronization service for an external application service of a 5G system (5GS). A method may include: receiving, by a Network Exposure Function (NEF) from an Application Function (AF), a request for a capability for a 5GS time synchronization service; and in response to the request for the capability, transmitting, by the NEF to the AF, a time synchronization parameter including the capability.

A base station may select whether to configure one or more second RACH reference slots associated with a plurality of first RACH reference slots in a RACH configuration period. The one or more second RACH reference slots may be new RACH reference slots, and the plurality of first RACH reference slots may be previously existing RACH reference slots. The base station may identify, upon selecting to configure the one or more second RACH reference slots, a RACH reference slot configuration including the one or more second RACH reference slots associated with the plurality of first RACH reference slots in the RACH configuration period. The base station may transmit, to at least one UE, an indication of the RACH reference slot configuration including the one or more second RACH reference slots associated with the plurality of first RACH reference slots.

A method may be provided to operate a wireless terminal in communication with a network node. The method may include receiving a Physical Downlink Control Channel, PDCCH, order from the network node. The PDCCH order may include an identification for a Random Access CHannel RACH occasion to be used for a RACH message 1 preamble transmission. Moreover, the identification may include a first index that indicates a set of RACH occasions and a second index that indicates the RACH occasion associated with the set. The method may also include transmitting a Message 1 preamble to the network node using the RACH occasion responsive to the PDCCH order.

The disclosure provides a method and a device in a User Equipment (UE) and a base station for wireless communication. The UE first receives a first radio signal and a second radio signal, and then transmits a third radio signal. The first radio signal is used for determining a first signature sequence, and a receiving timing of the second radio signal is used for determining a transmitting timing of the third radio signal. The first signature sequence is used for generating the third radio signal. The first radio signal and the second radio signal are associated with a first synchronization sequence and a second synchronization sequence respectively, and the first synchronization sequence is different from the second synchronization sequence. According to the disclosure, through the designs of the first radio signal and the second radio signal, thereby improving system performances and transmission efficiency.

Embodiments of a User Equipment (UE), Generation Node-B (gNB) and methods of communication are disclosed herein. The UE may attempt to decode sidelink synchronization signals (SLSSs) received on component carriers (CCs) of a carrier aggregation. In one configuration, synchronization resources for SLSS transmissions may be aligned across the CCs at subframe boundaries in time, restricted to a portion of the CCs, and restricted to a same sub-frame. The UE may, for multiple CCs, determine a priority level for the CC based on indicators in the SLSSs received on the CC. The UE may select, from the CCs on which one or more SLSSs are decoded, the CC for which the determined priority level is highest. The UE may determine a reference timing for sidelink communication based on the one or more SLSSs received on the selected CC.

The present disclosure relates to a wireless communication system. More specifically, the present disclosure relates to: a method for transmitting a physical random access channel (PRACH) in at least one carrier from among a first carrier group on the basis of a channel sensing result, receiving a random access response (RAR) in at least one carrier from among a second carrier group in response to the transmission of the PRACH, and transmitting a physical uplink shared channel (PUSCH) on the basis of the RAR; and an apparatus therefor.

Various communication systems may benefit from improved signaling. For example, it may be helpful to improve the management of the uplink timing alignment where multiple numerologies are used. A method may include receiving at a user equipment an indication from a network node. The timing adjustment granularity may be determined implicitly based on one or more multiple numerology assigned to a timing advance group. The method may also include applying at the user equipment the indicated timing adjustment granularity associated with one of the multiple numerologies.

Proposed is a method for performing detection by a first node in a wireless communication system. The method comprises: receiving detection configuration information from a second node; and when detection request information is received from the second node, transmitting a detection signal to a neighboring node on the basis of the detection configuration information, wherein the detection signal is aperiodically transmitted and is transmitted on the basis of beam sweeping.