Hi Andreas,
i like to add layer1 control for measurement reports. my idea is use use normal L1CTL_DATA_REQ with SACCH channel type for sending the (updated) report to layer1.
the protocol and message type will be decoded by layer1, so it can detect if this is a measurement report or not. if it is a measurement report, it will overwrite the last stored measuement report. it will be sent whenever there is no other SACCH message in the queue of SACCH messages. if it is not a measurement report, it will be queued as usual.
I think this approach makes a lot of sense. Thanks!