Abstract: A wireless device may communicate with multiple base stations via different cell groups. A listen-before-talk (LBT) procedure may be performed. Based on a failure of the LBT procedure, a base station may be reconfigured.

Abstract: Wireless communications are described. A base station may send control information for scheduling data to be transmitted to the wireless device via a downlink. The control information may comprise one or more indications of wireless resources to be used by the wireless device to receive the data. The wireless device may receive the data based on one or more determinations/conditions, such as satisfying a time offset (e.g., between reception of the downlink information and a scheduled transmission of the data), whether a control resource set is configured to indicate a transmission configuration state, and/or whether the control information indicates a transmission configuration state.

Abstract: A wireless device may perform a listen-before transmit (LBT) procedure for an uplink transmission. An LBT failure recovery procedure may be initiated based on a failure of one or more LBT procedures. The LBT failure recovery procedure may be aborted and/or canceled based on one or more conditions, such as receiving configuration (or reconfiguration) parameters, receiving an indication of a bandwidth part switching, deactivating a cell, and/or receiving a request to set (or reset) a communication layer of the wireless device.

Abstract: Uplink resources for semi-persistent channel state information (SP-CSI) reports and other uplink transport block transmissions may be managed. If resources allocated to the SP-CSI reports overlap, in time, with resources allocated to the uplink transport block transmissions, a determination of whether to drop an SP-CSI report may be made. Various selection criteria may be used to make this determination.

Abstract: A wireless device transmits, via a first uplink bandwidth part (BWP), a first preamble for a random-access procedure. A determination is made of a second uplink BWP for transmission of a second preamble for the random-access procedure. The determination is based on not receiving, via a first downlink BWP associated with the first uplink BWP, a random-access response corresponding to the first preamble. Based on the determination of the second uplink BWP, the first downlink BWP is switched to a second downlink BWP associated with the second uplink BWP. The second preamble is transmitted via the second uplink BWP.

Abstract: A wireless device receives configuration parameters of: one or more first cells in a first frequency band; and one or more second cells in a second frequency band. A physical uplink shared channel (PUSCH) signal in the first frequency band is transmitted via the one or more first cells. The wireless device determines, independent of transmissions of the PUSCH signals in the first frequency band, whether to transmit or to drop a configured transmission of at least one sounding reference signal (SRS) via the one or more second cells of the second frequency band. The configured transmission of the at least one SRS overlaps with the PUSCH signal. Based on the determination: the at least one SRS are transmitted via a second cell of the one or more second cells; or the at least one SRS is dropped.

Abstract: A wireless device transmits a Type 2 power headroom value, for a primary cell, in response to a physical uplink control channel (PUCCH) secondary cell being activated.

Abstract: Wireless communications using multiple active resources (e.g., bandwidth parts (BWP)) are described. A predetermined rule may be used to determine on which downlink (DL) BWP of multiple active DL BWPs, and/or on which uplink (UL) BWP of multiple active UL BWPs, a message is to be sent. A wireless device and/or a base station may reduce the quantity of active DL BWPs and/or active UL BWPs to monitor for a response.

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: Base stations and wireless devices may use cross-slot scheduling for each of a plurality of cells. Base stations and wireless devices may communicate regarding the cross-slot scheduling, including for example, one or more indications associated with cross-slot scheduling for one or more cells. A wireless device may determine cross-slot scheduling for one or more transmissions associated with the one or more cells. The wireless device may save power by switching to a power saving mode for at least one cell during one or more slots, based on the cross-slot scheduling.

Abstract: Wireless communications for a sidelink are described. A wireless devices and/or a base station may determine at least one resource and/or time period for communications via a sidelink. The base station and/or the wireless device may schedule sidelink communication, based on the determined resource(s) and/or time period(s), which may increase the likelihood of successful sidelink communications between wireless devices.

Abstract: A wireless device monitors a downlink control channel of a transmission reception point (TRP) on an active bandwidth part (BWP) of a cell, where the TRP is in an active state. First channel state information reports of the TRP for the active BWP are transmitted. The TRP transitions from the active state into a dormant state in response to a first time period of inactivity on the TRP. The monitoring is stopped. Second channel state information reports of the TRP for the active BWP are transmitted when the TRP is in the dormant state.

Abstract: A base station and/or a wireless device may communicate using a plurality of transmission beams. Multiple transmission beams may be used for transmission such that a message may be sent via different transmission beams. Multiple transmission beams may be used for sending multiple repetitions of the message or for sending different portions of the message.

Abstract: Wireless devices may communicate via a plurality of transmission and/or reception beams. Control information may be used to indicate one or more beams to be used by wireless devices. A configuration message may indicate a portion of the control information corresponding to a particular wireless device of the wireless devices.

Abstract: One or more resources may be determined for wireless communications. A wireless device may apply an indication associated with a resource to one or more other resources. One or more conditions and/or parameters may be used to determine whether to use the indication for the one or more other resources.

Abstract: A wireless device initiates a beam failure recovery procedure based on a beam failure of at least one beam of a cell. A radio link failure is determined based on a failure of the beam failure recovery procedure. A radio link failure report is transmitted. The radio link failure report comprises: a first field indicating that the failure of the beam failure recovery procedure is a cause of the radio link failure; and a second field indicating a random access resource for the beam failure recovery procedure.

Abstract: A first base station may receive, from a second base station, configuration parameters employed by the second base station for at least one broadcast multicast service. The configuration parameters may comprise a first scheduling period start offset and first single cell multicast traffic channel (SC-MTCH) scheduling parameters comprising an on-duration timer value for single cell point to multipoint (SCPTM). Based on the configuration parameters, the first base station may determine a second scheduling period start offset and second SC-MTCH scheduling parameters. The first base station may transmit, to the second base station, a configuration update acknowledge message indicating an acknowledgement of a broadcast multicast service configuration update based on the configuration parameters.

Abstract: A wireless device receives indications of: a first scheduling request (SR) resource corresponding to first logical channel(s) having a first logical channel prioritization (LCP) mapping to first radio resources; and a second SR resource corresponding to second logical channel(s) having a second LCP mapping to second radio resources. A buffer status report (BSR) is triggered in response to data becoming available for the second logical channel(s). First uplink grant(s) indicating a first radio resource of the first radio resources is received. An SR for transmission of the BSR is triggered in response to the first radio resource not meeting the second LCP mapping configured for the second logical channel(s) that triggered the BSR. The SR is transmitted via the second SR resource selected based on the second logical channel(s) triggering the BSR. The BSR is transmitted via a second radio resource of the second radio resources.

Abstract: A wireless device receives indications of: a first scheduling request (SR) resource corresponding to first logical channel(s) having a first logical channel prioritization (LCP) mapping to first radio resources; and a second SR resource corresponding to second logical channel(s) having a second LCP mapping to second radio resources. A buffer status report (BSR) is triggered in response to data becoming available for the second logical channel(s). First uplink grant(s) indicating a first radio resource of the first radio resources is received. An SR for transmission of the BSR is triggered in response to the first radio resource not meeting the second LCP mapping configured for the second logical channel(s) that triggered the BSR. The SR is transmitted via the second SR resource selected based on the second logical channel(s) triggering the BSR. The BSR is transmitted via a second radio resource of the second radio resources.

Abstract: A wireless device receives: a value for a discontinuous reception (DRX) inactivity timer; and a semi-persistent channel state information (SP-CSI) radio network temporary identifier (RNTI). receive a first downlink control information (DCI) corresponding to the SP-CSI RNTI is received. The SP-CSI RNTI indicates: activation of SP-CSI reporting; and no uplink grant for uplink packet transmission. The DRX inactivity timer is started based on the first DCI indicating the activation of the SP-CSI reporting. The DRX inactivity timer controls monitoring for DCIs of the SP-CSI RNTI. a transport block is transmitted based on receiving, while the DRX inactivity timer is running, a second DCI.