Fronthaul physical layer split in a cellular telecommunications network

A method of operating a base station in a cellular telecommunications network, the base station having a central base station unit and a distributed base station unit, wherein the central base station unit and the distributed base station unit communicate over a fronthaul link, and the cellular telecommunications network further includes a User Equipment (UE) consuming a service via the base station in which communications between the central base station unit and the UE utilize a configurable error mitigation technique, the method comprising:

• communicating In-Phase and Quadrature (IQ) samples over the fronthaul link at a first bit width;
• determining that a latency measure, or a derivative of a latency measure, of the service satisfies a threshold;
• and, in response,
• reconfiguring the IQ samples to use a second bit width, wherein:
• when it is determined that the latency measure, or the derivative of the latency measure, of the service is more than the threshold, then the second bit width has more bits per sample than the first bit width, and
• when it is determined that the latency measure, or the derivative of the latency measure, of the service is less than the threshold, then the second bit width has fewer bits per sample than the first bit width;
• reconfiguring the error mitigation technique, wherein the error mitigation technique is based on one or more layers of a protocol stack;
• communicating the IQ samples over the fronthaul link at the second bit width;
• and
• communicating between the central base station unit and the UE using the reconfigured error mitigation technique.