A method, comprising: at the base station: establishing a radio resource control, RRC, connection with a wireless device served by a serving cell provided by the base station; receiving a first RRC message from the wireless device, wherein the first RRC message comprises a first indication of a preferred uplink communication bandwidth mode and a second indication of a preferred downlink communication bandwidth mode; wherein the preferred uplink communication bandwidth mode is one of a plurality of uplink communication bandwidth modes, wherein the preferred uplink communication bandwidth mode comprises a first maximum uplink communication bandwidth for a physical uplink shared channel, PUSCH, of the serving cell, wherein at least one of the plurality of uplink communication bandwidth modes comprises a maximum uplink communication bandwidth of 1.4MHz; wherein the preferred downlink communication bandwidth mode is one of a plurality of downlink communication bandwidth modes, wherein the preferred downlink communication bandwidth mode comprises a first maximum downlink communication bandwidth for a physical downlink shared channel, PDSCH, of the serving cell, wherein at least one of the plurality of downlink communication bandwidth modes comprises a maximum downlink communication bandwidth of 1.4MHz; transmitting, to the wireless device, a second RRC message configuring and confirming the preferred uplink communication bandwidth mode and the preferred downlink communication bandwidth mode in response to the first RRC message; and communicating data with the wireless device using the preferred uplink communication bandwidth mode and the preferred downlink communication bandwidth mode. establishing a radio resource control, RRC, connection with a wireless device served by a serving cell provided by the base station; receiving a first RRC message from the wireless device, wherein the first RRC message comprises a first indication of a preferred uplink communication bandwidth mode and a second indication of a preferred downlink communication bandwidth mode; wherein the preferred uplink communication bandwidth mode is one of a plurality of uplink communication bandwidth modes, wherein the preferred uplink communication bandwidth mode comprises a first maximum uplink communication bandwidth for a physical uplink shared channel, PUSCH, of the serving cell, wherein at least one of the plurality of uplink communication bandwidth modes comprises a maximum uplink communication bandwidth of 1.4MHz; wherein the preferred downlink communication bandwidth mode is one of a plurality of downlink communication bandwidth modes, wherein the preferred downlink communication bandwidth mode comprises a first maximum downlink communication bandwidth for a physical downlink shared channel, PDSCH, of the serving cell, wherein at least one of the plurality of downlink communication bandwidth modes comprises a maximum downlink communication bandwidth of 1.4MHz; transmitting, to the wireless device, a second RRC message configuring and confirming the preferred uplink communication bandwidth mode and the preferred downlink communication bandwidth mode in response to the first RRC message; and communicating data with the wireless device using the preferred uplink communication bandwidth mode and the preferred downlink communication bandwidth mode.