Abstract: In some examples, a method of wireless communication by a user equipment, UE, comprises receiving configured grant, CG, configuration data at a first UE, the CG configuration data comprising bi-directional CG information for an aligned sidelink communication session between the first UE and a second UE, monitoring for receipt of a first transmission of the communication session at the first UE, and on the basis of the monitoring, acquiring the channel for the sidelink communication session at the first UE.

Abstract: Disclosed is a method comprising receiving, by a first terminal device, a first transmission from a second terminal device. The first terminal device measures a channel busy ratio over a first time window. The first terminal device determines a channel occupancy ratio of the second terminal device based at least partly on the received first transmission. The first terminal device updates the channel busy ratio based at least partly on the determined channel occupancy ratio and the measured channel busy ratio. The first terminal device determines one or more sidelink transmission parameters based at least partly on the updated channel busy ratio.

Abstract: Apparatus and method in a communication system for enhanced carrier selection are provided. The solution comprises selecting a carrier for first transmission to a second apparatus; controlling transmission utilising the selected carrier; receiving a transmission from the second apparatus and selecting a carrier for second transmission to the second apparatus at least partly based on the transmission from the second apparatus.

Abstract: Apparatus and method in a communication system for reconfiguring resources for transmission are disclosed. More than one sidelink transmissions are transmitted to a second apparatus. It is determined that reception status feedbacks are not received regarding a given number of sidelink transmissions. Transmission resource used for sidelink transmission is reconfigured based on the determination.

Abstract: A device receiving a transmission is configured to provide its feedback in a unique resource pattern within a set of resources (a resource pool). The resource pattern used by the device overlaps partially with one or more resource patterns used for feedback transmissions by other devices in the group. The transmitting device is able to identify the device by identifying an activation pattern matching the unique resource pattern of the device in the overall feedback that it receives from the devices of the group.

Abstract: Disclosed is a method comprising receiving, by a first terminal device, a first transmission from a second terminal device. The first terminal device measures a channel busy ratio over a first time window. The first terminal device determines a channel occupancy ratio of the second terminal device based at least partly on the received first transmission. The first terminal device updates the channel busy ratio based at least partly on the determined channel occupancy ratio and the measured channel busy ratio. The first terminal device determines one or more sidelink transmission parameters based at least partly on the updated channel busy ratio.

Abstract: Apparatus and method in a communication system for reconfiguring resources for transmission are disclosed. More than one sidelink transmissions are transmitted to a second apparatus. It is determined that reception status feedbacks are not received regarding a given number of sidelink transmissions. Transmission resource used for sidelink transmission is reconfigured based on the determination.