Aspects of the present disclosure provide techniques configuring half duplex UEs (HD-UEs) to implement supplementary downlink (SDL) in band combination that may be in same or different frequency range designations (e.g., FR1 or FR2). Particularly, in order to compensate for the loss of downlink coverage and improve load balancing, aspects of the present disclosure configure the UE to perform random-access channel (RACH), a procedure that is a shared channel used by wireless terminals to access the mobile network, on the anchor carrier in time division duplex (TDD) band and after initial access, the UE may be configured to switch to SDL to receive subsequent downlink signals.

Methods, systems, and devices for wireless communications are described. A UE may identify a configuration of sidelink synchronization signal block instances including a first quantity of sidelink synchronization signal block instances for each of a plurality of sidelink synchronization signal block periods. The UE may transmit a second quantity of sidelink synchronization signal block instances over a first sidelink synchronization signal block period. In some aspects, the UE may transmit a sidelink synchronization signal block burst using beams in a sidelink synchronization signal block period. The UE may identify a configuration for a set of resources of a sidelink beam selection resource pool based on transmitting the sidelink synchronization signal block burst. The UE may receive, from another UE over the set of resources, a control message including an indication of preferred beams. The UE may transmit the sidelink data to the other UE using the preferred beams.

Example data processing methods, network devices, and media are disclosed. One example method includes obtaining, by a first network device, N pieces of first round-trip time in a first periodicity. The first round-trip time is time consumed when the first network device and a second network device each transmit a packet once through an Xn/X2 interface. A minimum first round-trip time reference value is determined based on the N pieces of first round-trip time. The minimum first round-trip time reference value is a smallest value of the N pieces of first round-trip time. An inter-site synchronization offset value of the first periodicity is determined based on the minimum first round-trip time reference value. The inter-site synchronization offset value of the first periodicity is an inter-site synchronization offset value that exists when the first network device and the second network device transmit packets through the Xn/X2 interface.

A technique includes receiving a plurality of synchronization signal blocks, including synchronization signals and beam specific reference signals, receiving a plurality of beam sweeping scheduling blocks, each beam sweeping scheduling block corresponding to one of the synchronization signal blocks and including scheduling information to schedule a dynamic size beam sweeping resource (e.g., mini-slot or other resource) for transmission of common control information (e.g., paging data and/or system information or SIB) via a set of one or more beams, and selecting, based on a measurement of signals of at least one of the synchronization signal blocks and the scheduling information, one of the dynamic size beam sweeping resources (e.g., one of the beam sweeping mini-slots or other resource) to receive the common control information (e.g., paging data and/or system information or SIB).

A wireless device is a wireless device operable to switch between a function of a master wireless device and a function of a slave wireless device in a group to which multiple wireless devices belong, where the multiple wireless devices communicate with each other using a synchronization signal, the master wireless device controls another wireless device belonging to the group, and the slave wireless device is controlled by the master wireless device. The wireless device includes a transmission unit capable of transmitting a signal, a reception unit capable of receiving a signal, and a control unit that causes the transmission unit to transmit, toward the master wireless device, information about a synchronization signal detected, when the wireless device is operating as the slave wireless device, and the reception unit receives and detects the synchronization signal from a wireless device not belonging to the group.

Techniques for improved wake-up signal (WUS) operation in a wireless communication system are described. In accordance with one embodiment, a wireless communications device may receive, from a gNB, information indicating parameters associated with a wake-up signal time window and may power down its first receiver and second receiver based on a discontinuous reception (DRX) cycle. The wireless communications device may wake up the second receiver to receive, from the gNB, a wake-up signal during a configured WUS time window and determine whether a wake-up or a non-wake-up condition is indicated. If a wake-up condition is indicated, then the wireless communications device may wake up the first receiver before an on duration of the DRX cycle to synchronize timing with the gNB, detect a new radio physical downlink control channel (NR-PDCCH) during the on duration of the DRX cycle, and reset a size of the wake-up signal time window.

Beam-related paging assistance information can be exchanged between a core network, radio access networks, and user equipment. Beam-related paging assistance information can enable more efficient paging operations at a base station. A centralized unit (CU) of a base station can exchange beam-related paging assistance information with a distributed unit (DU) of the base station to facilitate paging operations using the beam-related paging assistance information.

A first node device includes a transmitter, a receiver, a processor, and a non-transitory computer-readable storage medium storing a program to be executed by the processor. The program includes instructions to cause the transmitter to send, to a second node device, an offset of a first uplink sending timing of the second node device and a first amount of timing adjustment of the second node device, cause the transmitter to send indication information to the second node device, where the indication information indicates whether the second node device sends uplink data by using the first uplink sending timing of the second node device, and receive, through the receiver, data sent by the second node device, where the first node device is a parent node device of the second node device.

A communication device determines whether a PHY data unit is to be transmitted in a first frequency band from among multiple frequency bands in which a WLAN communication protocol permits operation. The multiple frequency bands also include a second frequency band. The communication device determines whether the PHY data unit is to include a PS-Poll frame, and whether a BSS color is currently disabled for the WLAN. In response to i) determining that the PHY data unit is to be transmitted in the first frequency band, ii) determining that the PHY data unit is not to include a PS-Poll frame, and iii) determining that the BSS color is not currently disabled for the WLAN: the communication device determines that a TXOP duration subfield in a PHY preamble of the PHY data unit cannot be set to a value defined by the WLAN communication protocol for indicating a TXOP duration that is unspecified.

The present disclosure relates to a communication method and system for converging a 5.sup.th-Generation (5G) communication system for supporting higher data rates beyond a 4.sup.th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure 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.

Disclosed are a base station and a random access preamble sequence detection method thereof, and a terminal and a random access channel configuration method thereof.