In some examples, the controller 204 and the radio points 206 are configured to communicate data related to power management or capacity allocation for the radio points 206 using communication links separate from those used to communicate the wireless signals. In other examples, a portion of the bandwidth of communications over switched Ethernet network 220 is utilized for communicating data related to power management or capacity allocation for the radio points 206. For example, part of the communication frame can be used to create a 1 gigabit link between the controller 204 and radio points 206 using the switched Ethernet network 220. The radio points 206 can include a switch to add the user detection data to uplink data streams and the controller 204 can include a switch to add control signals to the downlink data streams. It should be understood that other protocols for framing the data communicated between the controller 204 and the radio points 206 could also be used.

In some examples, the radar sensors 224 are also configured to determine the position of the detected users 212 with respect to the radar sensor 224 and output the location of the detected users 212 (for example, the users' coordinates (x, y, z)) in real-time. In some examples, the radar sensor 224 is configured to output the position of the users 212 and a user-ID at a predetermined time interval, which can be selected by the operator of the C-RAN system 200. In some examples, the predetermined time interval set by the system operator can be in the order of seconds.