A second network node in a wireless communication system includes a transceiver and at least one processor configured to control the transceiver to receive, from a first network node, at least one of a first scheduling request (SR) or a first buffer status report (BSR); control the transceiver to transmit, to a third network node, at least one of a second SR or a second BSR based on the first SR or the first BSR before receiving data to be transmitted corresponding to the first SR or the first BSR from the first network node; control the transceiver to receive, from the third network node, a first uplink (UL) grant corresponding to the second SR or the second BSR; control the transceiver to receive the data from the first network node; and control the transceiver to transmit the data to the third network node.

The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4.sup.th-Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments of the disclosure provide a method, device and apparatus for initial access, wherein a method for initial access includes: receiving a first configuration message; and establishing a connection between a relay node and an anchor node, based on the first configuration message. The method provided in this disclosure establishes a connection between the relay node and a central unit of the anchor node through the information interaction between base stations and the information interaction between base station and relay node. The present disclosure provides a scheduling method and a first node. The method includes: receiving second scheduling related information reported by at least one second node and first scheduling related information reported by at least one UE that is connected to the at least one second node; generating scheduling information used by the at least one second node for scheduling the connected UE; and transmitting the generated scheduling information to the at least one second node and/or the connected UE. A corresponding second node, third node, and computer readable medium are also provided.

An operation method of a relay operating in an in-band full duplex (IFD) scheme includes measuring a signal received from a source node during a first period; measuring a signal received from the source node and a signal received after being transmitted from the relay through a first beam during a second period, the second period being a period after a predetermined delay time from the first period; and calculating a self-interference (SI) amount of the first beam by comparing a measurement result during the second period with a measurement result during the first period.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a remote user equipment (UE) may communicate with a network entity via a relay UE using one or more radio resource control (RRC) messages that are encapsulated in a dedicated sidelink signaling message directed to the relay UE. The UE may receive, from the network entity via the one or more RRC messages, an access stratum configuration for a sidelink unicast link between the remote UE and the relay UE. The UE may configure the sidelink unicast link based at least in part on the received access stratum configuration. Numerous other aspects are described.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may receive a system information block (SIB) including configuration information associated with configuring operation of a plurality of repeaters, wherein repeaters in the plurality of repeaters are configured to receive signals from first wireless communication devices and forward the signals to second wireless communication devices. The wireless communication device may communicate in a set of resources based at least in part on the configuration information included in the SIB. Numerous other aspects are provided.

This disclosure provides systems, apparatus, methods, and computer-readable media for beam switching by a repeater node that forwards communications from one of a first node or a second node to the other of the first node or the second node. For example, after a change of position by the second node, the first node may provide the repeater node an instruction to perform a beam change operation to communicate with the second node. In some aspects, performing the beam change operation by the repeater node may improve reliability of wireless communications, such as by focusing signal energy in a particular direction. Further, a beam change delay time interval or a scheduling of the beam change delay time interval may be selected based on scheduling associated with other nodes, which may reduce a number of messages sent to the repeater node (such as by reducing instructions to change beam directions).

Disclosed are a relay system synchronization method and apparatus, and a computer device and a storage medium. The method may comprise: a relay node determining a first slot boundary; the relay node sending downlink data to a child node by means of time alignment between a second slot boundary of the downlink data sent to the child node and the first slot boundary; in addition, the relay node determining a first timing advance at least according to the following information: a second timing advance for the relay node to send uplink data to a parent node and the transmission delay between the relay node and the child node; and the relay node sending the first timing advance to the child node, wherein the first timing advance is used for the child node to determine the sending time for sending the uplink data to the relay node.

The disclosure relates to a circuit arrangement for transmitting uplink and downlink signals between at least one terminal device and at least one antenna, wherein the circuit arrangement comprises a signal coupler for providing a decoupled uplink or downlink signal, a device for providing a reference signal of adjustable frequency, a mixer for mixing the decoupled signal and the reference signal and a filter device for low-pass or bandpass filtering of the mixed signal, wherein the circuit arrangement comprises an evaluation device for evaluating the filtered signal, wherein, depending on the adjusted frequency of the reference signal and on at least one signal property of the filtered signal, a frequency band or channel in which the transmitted signal is being transmitted can be identified, and also to a method for identifying a frequency band or channel.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless node may receive, from a control node or a second wireless node, an indication of an assisting node to be used to establish a communication connection between the first wireless node and the second wireless node, the indication including identifying information associated with the assisting node. The first wireless node may establish the communication connection with the second wireless node using the assisting node. Numerous other aspects are described.

A millimeter-wave repeater may be provided to cover a radio shaded area, in a system for the millimeter-wave repeater. The millimeter-wave repeater may provide a service by changing a signal of a millimeter-wave band to an intermediate frequency band, and then changing the signal to the millimeter-wave band again.