User equipment, base station and wireless communication method

A wireless communication method for a user equipment which is operated in a base station-based scheduling mode for sidelink transmission, comprising:

• selecting candidate resources for at least data channels from resources in a resource selection window based on a result of sensing performed in a sensing window, the sensing window being before the resource selection window, and a beginning time of the resource selection window being no earlier than a service arrival time;
• reporting at least part of the selected candidate resources to a base station;
• and
• reporting the beginning time and an ending time of the resource selection window to the base station, wherein
• selecting the candidate resources uses at least one rule of rules including:
• a time period from the service arrival time to the ending time of the resource selection window is not greater than a threshold latency;
• for a case of non-adjacent scheduling between a data channel and a control channel, both an interference of a selected candidate resource for the data channel and an interference of the selected candidate resource for the control channel which is uniquely mapped with the data channel are not greater than a threshold interference, or for a case of adjacent scheduling between the data channel and the control channel, the interference of the selected candidate resource for the data channel is not greater than the threshold interference;
• and
• the selected candidate resources and associated radio parameters meet a Channel Business Ratio (CBR) requirement.

A base station, comprising:

• a receiver which, in operation, receives information for reporting candidate resources from a user equipment which is operated in a base station-based scheduling mode for sidelink transmission;
• and
• a circuitry which, in operation, configures parameters for scheduling sidelink resources for the user equipment based on the information, wherein
• the reported candidate resources are at least part of selected candidate resources for at least data channels which are selected by the user equipment from resources in a resource selection window based on a result of sensing performed in a sensing window, the sensing window being before the resource selection window, and a beginning time of the resource selection window being no earlier than a service arrival time, and wherein
• the selection of the candidate resources by the user equipment uses at least one rule of rules including:
• a time period from the service arrival time to an ending time of the resource selection window is not greater than a threshold latency;
• for a case of non-adjacent scheduling between a data channel and a control channel, both an interference of a selected candidate resource for the data channel and an interference of the selected candidate resource for the control channel which is uniquely mapped with the data channel are not greater than a threshold interference, or for a case of adjacent scheduling between the data channel and the control channel, the interference of the selected candidate resource for the data channel is not greater than the threshold interference;
• and
• the selected candidate resources and associated radio parameters meet a Channel Business Ratio (CBR) requirement,
• the receiver, in operation, receives the beginning time and the ending time of the resource selection window from the user equipment.