Dear all,

In a D2D environment, what will be the synchronization state of devices will be?

For example, 

1. In a pure LTE system, devices' clocks will be synchronized according to eNB.

2. However, in a pure D2D system, the devices will be synchronized according to each other, i.e. all D2D devices will have somewhat same reference clocks w.r.t which they will transmit their beacons or Tx/Rx signals. 

Question

However, in an environment when D2D and cellular systems co-exist what will be the state of synchronization of UE clocks?