Abstract: A first base station receives, from a second base station, cell configuration parameters of one or more cells of the second base station, the cell configuration parameters indicating at least one first information element (IE) indicating a first identifier of a first cell of the one or more cells, at least one second IE indicating that the first cell is an unlicensed cell, and at least one third IE indicating a radio frequency channel number of the unlicensed cell. The first base station sends, to the second base station, a request message for adding the second base station as a secondary base station for a wireless device after receiving the cell configuration parameters.

Abstract: A base station distributed unit may transmit a timing advance command for a timing advance group to a wireless device. The base station distributed unit may start a time alignment timer for the timing advance group of the wireless device in response to the transmission of the timing advance command. The base station distributed unit may determine expiration of the time alignment timer. The base station distributed unit may transmit a first message to a base station central unit. The first message may indicate the expiration of the time alignment timer for the timing advance group of the wireless device.

Abstract: A plurality of resource pools and/or a plurality of transmission and/or reception points may be used in wireless communications. Different pathloss references may be used for different resource pools and/or different transmission and/or reception points. A wireless device may receive one or more messages indicating a plurality of power control parameter sets each associated with a respective resource pool and/or a respective transmission and/or reception point. The wireless device may control a transmission power based on a pathloss reference associated with a resource pool and/or a transmission and/or reception point.

Abstract: Wireless resources may be determined for communications between wireless devices. A wireless device may select resources based on measuring one or more channels (e.g., associated with sidelink transmission, feedback transmission, etc.). Resource selection may comprise exclusion of certain resources being used for other communications and/or exclusion or selection of resources based on one or more priorities.

Abstract: Systems, apparatuses, and methods are described for wireless communications. A base station may transmit, to a wireless device, a DCI format comprising a downlink BWP indicator, an uplink BWP indicator, a PDSCH resource allocation, and a PUCCH resource allocation for HARQ ACK transmission. The wireless device may select, from a plurality of uplink active BWPs of the cell, an uplink active BWP based on the uplink BWP indicator. The wireless device may transmit the HARQ ACK via the selected uplink active BWP.

Abstract: Wireless resources may be determined for communications between wireless devices. A wireless device may select resources based on measuring one or more channels (e.g., associated with sidelink transmission, feedback transmission, etc.). Resource selection may comprise exclusion of certain resources being used for other communications and/or exclusion or selection of resources based on one or more priorities.

Abstract: Wireless communications are described in which a wireless device may receive a message comprising a timing advance command (TAC) for a secondary cell group. The wireless device may transmit or drop one or more sounding reference signals via a secondary cell of the secondary cell group, after applying the TAC.

Abstract: A base station transmits, to a wireless device, configuration parameters of a configured grant of an unlicensed cell. Based on the configured grant, the base station receives from the wireless device: one or more code block groups of a transport block, and a code block group transmission information indicating a presence of the one or more code block groups for the transport block. A downlink control information is transmitted that includes: a first field indicating that the base station received the code block group transmission information, and a second field indicating hybrid automatic repeat request feedback for each code block group of the one or more code block groups.

Abstract: Wireless communications using a power saving state are described. A wireless device and/or a base station may provide improved resource management such as by monitoring a reduced resource set in a power saving state. The wireless device may monitor an initial resource set in a non-power saving state and a reduced resource set in a power saving state.

Abstract: A wireless device receives radio resource control message(s) indicating: first uplink resources, of an uplink data channel, for a periodic resource allocation; a first offset parameter for uplink control information (UCI) transmission via the periodic resource allocation; and a plurality of second offset parameters for UCI transmission via a dynamic grant. A first UCI is transmitted via a number of the first uplink resources. The number of the first uplink resources is determined based on the first offset parameter. A downlink control information is received. The downlink control information comprises: an uplink grant indicating second uplink resources of the uplink data channel; and an offset indicator value indicating one of the plurality of second offset parameters. A second UCI is transmitted via a number of the second uplink resources. The number of the second uplink resources is determined based on the offset indicator value.

Abstract: Wireless communications for control information are described. A base station may send control information to a wireless device for data scheduling and/or other operations. A portion of the control information may not be received/decoded by the wireless device and/or may not be sent by the base station. A wireless device may be configured to use a first portion of the control information for various operations such as for receiving data, for example, even if a second portion of the control information is not successfully received/decoded.

Abstract: A first wireless device, receives from a second wireless device, one or more configuration messages comprising a sidelink latency upper bound for sidelink channel state information (CSI) reporting. The first wireless device receives, during a first time slot, from the second wireless device a sidelink CSI reporting triggering indication and one or more CSI reference signals. The first wireless device determines one or more sidelink CSI reporting resources within a time period indicated by the sidelink latency upper bound and starting from the first time slot. The first wireless device transmits one or more sidelink CSIs on the one or more sidelink CSI reporting resources.

Abstract: A wireless device may receive configuration information associated with reduced transmission power time intervals of a first base station. Interference cancellation may be performed based on the configuration information and based on received signals to determine a signal corresponding to a second base station.

Abstract: Wireless communications for access procedures are described. One or more control messages may indicate a report request associated with an access procedure. One or more reports associated with the access procedure may indicate one or more results associated with one or more access channels.

Abstract: A wireless device receives one or more radio resource configuration messages indicating periodic radio resources of a first configured grant. The wireless device transmits, via resource occasions of the periodic radio resources, one or more first code block groups of a first transport block, and one or more second code block groups of a second transport block. One or more downlink control information are received indicating negative acknowledgements for: the one or more first code block groups and the one or more second code block groups. The wireless device retransmits, via a first radio resource occasion of the periodic radio resources of the first configured grant, the one or more first code block groups and the one or more second code block groups.

Abstract: Wireless communications may be used to support transmission power control. A message to schedule a transmission may be received without indicating a parameter for determining a power for the transmission. The transmission power may be determined based on a pathloss reference signal associated with a default index of a power control parameter set.

Abstract: Beam failure recovery (BFR) procedures are described for wireless communications. At least one transmission for BFR may overlap with a scheduled transmission. A wireless device may prioritize the at least one transmission for BFR, for example, over the scheduled transmission and may transmit the at least one transmission for BFR.

Abstract: Wireless communications and beam failure recovery are described. A wireless device may send one or more messages associated with a beam failure recovery for a cell. The one or more message may comprise an indication that the wireless device has not selected a candidate beam for the cell. The wireless device may receive a response and determine that a beam failure recovery procedure has successfully completed.

Abstract: Wireless devices may communicate with each other via a sidelink. At least two wireless devices may communicate via a sidelink using a resource allocation mode that may be determined with or without assistance from a base station. A wireless device may select, based on one or more conditions, from at least two resource allocation modes of operation for the sidelink.

Abstract: A method comprises a wireless device transmitting a first preamble for a random-access procedure via a first bandwidth part of a cell and receiving a random-access response comprising a backoff indicator. The method also comprises the wireless device selecting, for transmission of a second preamble for the random-access procedure and during a backoff window associated with the backoff indicator, a second bandwidth part. Finally, based on the selection of the second bandwidth part the method comprises the wireless device transmitting via the second bandwidth part the second preamble.