1. A base station comprising:one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station to:
communicate with a wireless device via:
a primary cell, of a primary control channel group, that comprises a primary control channel; and
a control channel secondary cell of a secondary control channel group that also comprises a first secondary cell;
deactivate a state of the control channel secondary cell for the wireless device; and
after deactivating the state of the control channel secondary cell for the wireless device and while the first secondary cell is activated, transmit, to the wireless device, downlink multicast channel transport blocks via the first secondary cell and not transmit, to the wireless device, downlink shared channel transport blocks via the first secondary cell.