A method for determining random access configuration of a terminal, performed by the terminal. The method includes: receiving an obtaining request, sent by a base station, for a historical random access record; and sending the historical random access record associated with the obtaining request to the base station.

A communication apparatus includes a receiver and a transmitter. The receiver, in operation, receives from a neighboring cell a reference signal mapped to at least one first resource element. No signal is received from a serving cell on the at least one first resource element. The transmitter, in operation, transmits to a base station measurement information obtained based on the reference signal.

A method by which a first apparatus performs wireless communication is proposed. The method may comprise the steps of: selecting a first synchronization source, on the basis of a sidelink synchronization priority; obtaining a first synchronization, on the basis of the first synchronization source; receiving a plurality of synchronization signals from a plurality of synchronization sources; obtaining a plurality of synchronizations, on the basis of the plurality of synchronization signals; selecting a second synchronization source from among the plurality of synchronization sources, on the basis of a gap between a time related to the first synchronization and a time related to a second synchronization being greater than or equal to a threshold value, wherein the second synchronization is obtained on the basis of the second synchronization source; and transmitting, to a second apparatus, a sidelink-synchronization signal block (S-SSB), on the basis of the first synchronization or the second synchronization. For example, the first synchronization source and the second synchronization source may comprise at least one of a global navigation satellite system (GNSS), a base station, or user equipment. For example, the S-SSB may comprise a sidelink primary synchronization signal (S-PSS), a sidelink secondary synchronization signal (S-SSS), and a physical sidelink broadcast channel (PSBCH).

A method by which a first apparatus performs wireless communication is proposed. The method may comprise the steps of: selecting a first synchronization source, on the basis of a sidelink synchronization priority; obtaining a first synchronization, on the basis of the first synchronization source; receiving a plurality of synchronization signals from a plurality of synchronization sources; obtaining a plurality of synchronizations, on the basis of the plurality of synchronization signals; selecting a second synchronization source from among the plurality of synchronization sources, on the basis of a gap between a time related to the first synchronization and a time related to a second synchronization being greater than or equal to a threshold value, wherein the second synchronization is obtained on the basis of the second synchronization source; and transmitting, to a second apparatus, a sidelink-synchronization signal block (S-SSB), on the basis of the first synchronization or the second synchronization. For example, the first synchronization source and the second synchronization source may comprise at least one of a global navigation satellite system (GNSS), a base station, or user equipment. For example, the S-SSB may comprise a sidelink primary synchronization signal (S-PSS), a sidelink secondary synchronization signal (S-SSS), and a physical sidelink broadcast channel (PSBCH).

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.

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.

A network node and a wireless device as well as respective method performed thereby for communication with each other are provided. The method performed by the network node comprises receiving, from the wireless device, a measurement report indicating a channel quality of the channel between the network node and the wireless device; and determining whether the channel quality is acceptable or unacceptable. The method further comprises transmitting, to the wireless device, an indication of which RBG(s) to report channel quality measurements for, when the channel quality is unacceptable.

A resource selection method and apparatus, and an electronic device, are provided. The resource selection method includes: performing, by a sending terminal, any one of the following operations on periodic resources selected and/or reserved by the sending terminal: performing resource selection re-evaluation on the periodic resources in a case that a preset re-evaluation condition is met; using an independent parameter for resource pre-emption detection of the periodic resources in a case that a preset resource pre-emption detection condition is met; releasing the periodic resources and/or performing resource re-selection from the periodic resources in a case that a preset resource selection triggering condition is met; and excluding the periodic resources from a candidate resource set in a case that a preset resource exclusion condition is met.

A resource selection method and apparatus, and an electronic device, are provided. The resource selection method includes: performing, by a sending terminal, any one of the following operations on periodic resources selected and/or reserved by the sending terminal: performing resource selection re-evaluation on the periodic resources in a case that a preset re-evaluation condition is met; using an independent parameter for resource pre-emption detection of the periodic resources in a case that a preset resource pre-emption detection condition is met; releasing the periodic resources and/or performing resource re-selection from the periodic resources in a case that a preset resource selection triggering condition is met; and excluding the periodic resources from a candidate resource set in a case that a preset resource exclusion condition is met.

Methods, systems, and devices for wireless communications are described. Some wireless devices may support a prediction capability for prediction-based control information. A first device may receive, from a second device, first control signaling that activates the predication capability of the first device to generate a set of one or more control parameters for communications. The second device may transmit second control signaling to the first device to indicate initial values of the control parameters and a channel condition model for the first device. The first device and the second device may generate a set of multiple values associated with the control parameters over a time period based on the initial values of the control parameters and the channel condition model. The first device and the second device may communicate during at least the time period according to the set of generated values associated with the control parameters.