To support devices with different bandwidth capabilities, a base station configures a first initial bandwidth part (BWP) of a first width within a bandwidth of the first cell (1002) and configures a second initial BWP of a second width, within the bandwidth of the first cell (1004). The base station transmits an indication of the first BWP in the first cell and an indication of the second BWP in the first cell or a second cell, to cause a first user equipment UE having a first bandwidth capability to access the first BWP, and a second UE having a second bandwidth capability to access the second BWP (1006).

A method and apparatus for autonomous changing for dormant bandwidth part in a wireless communication system is provided. A wireless device configures a cell group including a certain cell on which a PUCCH is configured. A wireless device activates a dormant BWP of the certain cell to be an active BWP of the certain cell, wherein no PDCCH is configured on the dormant BWP. A wireless device switches the active BWP of the certain cell from the dormant BWP to another BWP upon triggering the scheduling request procedure, wherein at least one PDCCH is configured on the other BWP.

A negotiation method for an operating mode, an initiator, a receiver, a chip system, a computer-readable storage medium, and a functional entity are disclosed. In operating mode (OM) negotiation, the initiator transmits an operating mode indication (OMI) to the responder. The OMI includes at least either of channel width indication information and space-time stream number indication information. A capability range of a channel width indicated by the channel width indication information is greater than 160 MHz. A capability range of the number of space-time streams indicated by the space-time stream number indication information is greater than 8. After receiving the OMI, the responder performs transmission with the initiator based on a negotiated OM.

A terminal includes a receiving unit that receives control information transmitted on a second cell, the control information including information used to assign a resource for a downlink shared channel reception or a resource for an uplink shared channel transmission in a first cell; and a control unit that determines at least one of a measurement of a channel state information reference signal (CSI-RS), a measurement of a tracking reference signal (TRS), a transmission of a sounding reference signal (SRS), or a transmission of a physical random access channel (PRACH) is triggered, regardless of a content of information other than the information used to assign the resource included in the control information.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify a sidelink bandwidth part configuration for a plurality of sidelink carriers, wherein the sidelink bandwidth part configuration configures one or more sidelink bandwidth parts for each sidelink carrier of the plurality of sidelink carriers. The UE may identify at least one selected sidelink carrier selected from the plurality of sidelink carriers and an active sidelink bandwidth part for each of the at least one selected sidelink carrier from the one or more sidelink bandwidth parts configured for the at least one selected sidelink carrier. The UE may communicate with another UE in the active sidelink bandwidth part on each of the at least one selected sidelink carrier. Numerous other aspects are described.

Some aspects of the present disclosure disclose methods and systems related to the use of a periodic reference signal to activate a secondary cell. For example, a user equipment may receive, from a base station on a primary cell, an activation command configured to activate a secondary cell. The user equipment may also receive, from the base station and on the primary cell, a signal indicating an availability of a periodic reference signal on the secondary cell, the periodic RS being for use in activating the secondary cell. The user equipment may then, in response to receiving the signal, perform a tracking function to activate the secondary cell.

A UE is connected to a serving cell via an active BWP of a first BWP, and receives a message having criteria for switching from the first BWP to a second BWP. In response to at least one of the criteria being met, the UE waits until a first preconfigured time to switch from the first BWP to the second BWP, and switches the active BWP from the first BWP to the second BWP. The UE communicates with the serving cell and performs SSB measurements while using the second BWP as the active BWP. The UE switches from the second BWP to the first BWP after a second preconfigured time corresponding to a duration of time in the second BWP. The serving cell sends the message having the criteria, switches active BWPs accordingly, and communicates with the UE in the active BWPs.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a trigger state associated with a configuration for receiving one or more secondary cell (SCell) activation reference signals. The UE may receive the one or more SCell activation reference signals based at least in part on the configuration. Numerous other aspects are described.

Methods, systems, and apparatuses are described for wireless communications. Cells may be grouped into a plurality of cell groups. A base station may transmit a control message to modify a cell group of a cell associated with a wireless device.

A UE may enter a dormant state, e.g., for power savings. The systems, methods, and apparatus described herein may provide ways for the UE to transition between an active state and a dormant state, as well as UE behavior in a dormant state. The apparatus may be a UE configured to receive an indication of a bandwidth part (BWP) switch for a secondary cell and to transition between an active state and a dormant state for the secondary cell based on the indication of the BWP switch.