A wireless device may receive one or more messages comprising configuration parameters for a primary cell and a secondary cell. The configuration parameters may indicate a deactivation timer for the secondary cell and a bandwidth part (BWP) inactivity timer for the primary cell. The wireless device may start the deactivation timer in response to activating the secondary cell. The wireless device may start the BWP inactivity timer in response to switching an active BWP of the primary cell. The wireless device may stop the BWP inactivity timer of the primary cell based on initiating a random-access procedure for the secondary cell. In response to the deactivation timer of the secondary cell expiring during the random-access procedure, the wireless device may restart the BWP inactivity timer of the primary cell.

The present disclosure provides a method for performing a random-access channel procedure (RACH procedure) by a terminal in a wireless communication system. Specifically, the method may comprise transmitting a first physical random-access channel (PRACH) preamble through message A on the basis of a RACH occasion, and receiving, as a response to message A, a random-access response (RAR) through message B related to contention resolution, wherein on the basis of the first PRACH preamble corresponding to a PRACH preamble mapped to a physical uplink shared channel (PUSCH) occasion, message A comprises the first PRACH preamble and a PUSCH based on the mapped PUSCH occasion, and on the basis of the first PRACH preamble corresponding to a PRACH preamble failed to be mapped to a PUSCH occasion, message A comprises the first PRACH preamble.

A radio station includes, a controller configured to configure a bundled channel which is a channel group obtained by bundling a plurality of channels and first information related to the bundled channel, and perform control to generate a transmission opportunity for a second signal that requests an uplink resource for a first signal, according to an amount of data in the bundled channel and the first information, and a communicator configured to transmit the second signal to another radio station according to the transmission opportunity for the second signal, and receives a radio resource from the other radio station.

The present disclosure describes methods, systems and devices for configuring signal resource for physical random access channel (PRACH). One method includes configuring, by a base station, signal resource for a PRACH by mapping, by the base station, a PRACH slot pattern with a pattern parameter. Another method includes configuring, by a user equipment, signal resource for a PRACH by mapping, by the user equipment, a PRACH slot pattern with a pattern parameter.

Disclosed is a method for long term evolution (LTE) carrier determination by a new radio user equipment (NR UE), including determining whether an LTE carrier includes unused resources for data transmission, in response to determining the LTE carrier includes the unused resources, performing a collision determination, the collision determination being based at least in part on a randomized likelihood that transmissions of the NR UE on the LTE carrier will collide with transmission of one or more other NR UEs on the LTE carrier, and based on the collision determination, performing a transmission delay, the transmission delay occurring during a random back off period duration.

Provided are a data transmission method and apparatus, and a storage medium. The data transmission method includes: performing, by a first communication terminal, a clear channel assessment on a target resource, where the target resource is a target time domain resource corresponding to a part of second data transmission suspended or punctured by a second communication terminal, and the first communication terminal and the second communication terminal satisfy a transmission multiplexing condition; and when a channel is determined to be in an idle state, transmitting, by the first communication terminal, first data on the channel.

The present disclosure relates to telecommunications. In one of its aspects, the disclosure concerns a method performed by a User Equipment (UE) in a communication system. The method includes obtaining a Physical Random Access Channel (PRACH) configuration. The PRACH configuration indicates that the PRACH comprises at least one offset. The method further includes applying the PRACH configuration.

In a wireless communication system wherein wireless terminal stations, each belonging to one of a plurality of wireless base stations, transmit on a shared frequency band, each of the wireless terminal stations includes means for notifying a control device of environmental information that indicates a communication status of the wireless terminal station itself via a wireless base station to which the wireless terminal station belongs, and for setting a transmission power value and a CCA threshold notified by the control device, and the control device includes means for calculating the transmission power value and the carrier sense threshold according to a predetermined control procedure based on the environmental information collected from the wireless terminal station via the wireless base station, and for notifying the wireless terminal station of the transmission power value and the carrier sense threshold via the wireless base station.

Embodiments of the present application provide user equipment and a method of communication of the same. The method includes initiating a periodic channel occupancy with a first period and using a first information to indicate the initiated channel occupancy that is to be shared by a base station or a second UE. This can allow UE initiated channel occupancy and UE can share the initiated channel occupancy with the base station in a semi-static channel access mode, solve issues in the prior art, improve transmission latency, provide a good communication performance, and: or provide high reliability.

A method and apparatus for accessing a NR cell in a mobile communication system are provided. Method for accessing a NR cell includes receiving, by a terminal from a base station, a System Information Block1, determining, by the terminal, a preamble format and a subframe and a starting symbol based on the prach-ConfigurationIndex included in the first RACH-ConfigCommon if the second RACH-ConfigCommon is not included in the ServingCellConfigCommon and the prach-ConfigurationIndex included in the second RACH-ConfigCommon if the second RACH-ConfigCommon is included in the ServingCellConfigCommon and transmitting, by the terminal, the preamble based at least in part on the preamble format and the subframe and the starting symbol.