Abstract: Systems, methods, and devices include techniques for allocating network resources and/or improving network usage. A method includes sending by a wireless device to one or more radio access networks (RAN)s connecting to a core network, a first indication that the wireless device has an Access Traffic Steering, Switching, and Switching (ATSSS) capability. The first indication is included in at least one of: a UECapabilityInformation message of a user equipment (UE) Capabilities Transfer procedure; or a UEAssistanceInformation message of a UE assistance information capability procedure. Additionally, the method receives a second indication of network resource allocation in response to sending the first indication. The second indication configures, on the core network, carrier aggregation for the wireless device.

Abstract: A wireless device receives configuration parameters of physical uplink control channel (PUCCH) resources of a cell. The PUCCH resources are grouped into a plurality of PUCCH resource groups. A downlink control information (DCI), indicating an uplink grant, is received via a control resource set. A PUCCH resource group is selected, based on the control resource set, from the plurality of PUCCH resource groups. A spatial relation information corresponding to a first PUCCH resource of the selected PUCCH resource group is determined. An uplink transport block is transmitted via the uplink grant based on the spatial relation information.

Abstract: Provided are a method and an apparatus for transmitting or receiving a downlink reference signal. A cell-specific downlink reference signal (CRS) is transmitted in a partial frequency band of the entire downlink frequency band. Configuration information of the CRS transmitted in the partial frequency band is provided to user equipment. The CRS transmitted in the partial frequency band may be used in downlink channel measurement alone or together with a legacy CRS.

Abstract: Provided are a method and an apparatus for transmitting or receiving a downlink reference signal. A cell-specific downlink reference signal (CRS) is transmitted in a partial frequency band of the entire downlink frequency band. Configuration information of the CRS transmitted in the partial frequency band is provided to user equipment. The CRS transmitted in the partial frequency band may be used in downlink channel measurement alone or together with a legacy CRS.