As for the signaling load, there can be two kind of state
transitions as there are only two states in LTE RRC. Each
transition causes a certain amount of signaling within the
network. We note that using the configuration that delivers
largest energy savings, namely cDRX enabled and inactivity
timer longer than the burst interval, there is no increase in
signaling traffic due to state transitions. The cDRX mechanism
itself does not cause any extra signaling load to the
RAN compared to a