Disclosed are a method and apparatus for transmitting configuration information of a physical downlink control channel. The method comprises: acquiring state information of a terminal device, and generating dynamic signaling according to the state information of the terminal device, wherein the state information of the terminal device comprises service state information of the terminal device or channel state information of the terminal device; and sending the dynamic signaling to the terminal device, the dynamic signaling being used to indicate first configuration information of a search space, wherein the first configuration information is used to indicate that the terminal device monitors a physical downlink control channel (PDCCH). The technical problem of high power consumption of a terminal device in the prior art is solved.

An operation method of a first terminal in a communication system is provided. The method includes transmitting first SCI to a second terminal, the first SCI including one or more information elements among information indicating time resource(s) for sidelink communication, information indicating frequency resource(s) for the sidelink communication, information indicating a periodicity of physical resources for the sidelink communication, and information indicating an MCS for the sidelink communication. Second SCI is transmitted to the second terminal, the second SCI including information for an HARQ feedback operation and information indicating an NDI. The method further includes performing the sidelink communication with the second terminal based on the first SCI and the second SCI associated with the first SCI.

An operation method of a first terminal in a communication system is provided. The method includes transmitting first SCI to a second terminal, the first SCI including one or more information elements among information indicating time resource(s) for sidelink communication, information indicating frequency resource(s) for the sidelink communication, information indicating a periodicity of physical resources for the sidelink communication, and information indicating an MCS for the sidelink communication. Second SCI is transmitted to the second terminal, the second SCI including information for an HARQ feedback operation and information indicating an NDI. The method further includes performing the sidelink communication with the second terminal based on the first SCI and the second SCI associated with the first SCI.

Provided are a method of adjusting uplink timing in a wireless communication system and an apparatus therefor. Specifically, a method for a user equipment to adjust uplink timing in a wireless communication system includes transmitting, to a base station, an uplink signal, receiving, from the base station, a timing advance (TA) command configured based on the uplink signal, and performing uplink transmission to the base station by applying a timing advance (TA) indicated by the TA command. The TA command may be interpreted based on subcarrier spacing of at least one frequency resource region to which the TA is to be applied.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive, from a base station, an indication of a resource allocation for a data communication having a known payload, the known payload comprising data associated with a machine learning process; and communicate with the base station based at least in part on the resource allocation. Numerous other aspects are provided.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive, from a base station, an indication of a resource allocation for a data communication having a known payload, the known payload comprising data associated with a machine learning process; and communicate with the base station based at least in part on the resource allocation. Numerous other aspects are provided.

A notification method and device for the execution of PDCP data recovery, and same is used to notify an SN to execute a PDCP data recovery process. The notification method for the execution of packet data convergence protocol (PDCP) data recovery comprises: a primary base station sending an inter-node signaling message between the primary base station and a secondary base station to the secondary base station to notify the secondary base station of the execution of a PDCP data recovery process, and the inter-node signaling message is used to instruct the secondary base station to execute a PDCP data recovery process. The method for executing packet data convergence protocol (PDCP) data recovery comprises: the secondary base station receiving the inter-node signaling message sent by the primary base station.

A notification method and device for the execution of PDCP data recovery, and same is used to notify an SN to execute a PDCP data recovery process. The notification method for the execution of packet data convergence protocol (PDCP) data recovery comprises: a primary base station sending an inter-node signaling message between the primary base station and a secondary base station to the secondary base station to notify the secondary base station of the execution of a PDCP data recovery process, and the inter-node signaling message is used to instruct the secondary base station to execute a PDCP data recovery process. The method for executing packet data convergence protocol (PDCP) data recovery comprises: the secondary base station receiving the inter-node signaling message sent by the primary base station.

Certain aspects of the present disclosure provide techniques for using multiple timing advances for simultaneous uplink reception, for example, using multiple antennas, beams, and/or antenna panels. A method that may be performed by a user equipment (UE) includes configuring a plurality of timing advances (TAs) for a plurality of uplink transmissions using a plurality of antennas. The UE transmits the plurality of uplink transmissions to a base station (BS) using the plurality of antennas based on the plurality of timing advances. A method that may be performed by a BS includes receiving a plurality of uplink transmissions from a UE and transmitting timing information to the UE in a message, the timing information based on when each of the plurality of uplink transmissions was received at the BS.

Certain aspects of the present disclosure provide techniques for using multiple timing advances for simultaneous uplink reception, for example, using multiple antennas, beams, and/or antenna panels. A method that may be performed by a user equipment (UE) includes configuring a plurality of timing advances (TAs) for a plurality of uplink transmissions using a plurality of antennas. The UE transmits the plurality of uplink transmissions to a base station (BS) using the plurality of antennas based on the plurality of timing advances. A method that may be performed by a BS includes receiving a plurality of uplink transmissions from a UE and transmitting timing information to the UE in a message, the timing information based on when each of the plurality of uplink transmissions was received at the BS.