Patent ID: 9521636
Filing Date: 2016-12-13
CPC Classification: H04L,H04W

Claim Text:
1. A controller device for a data interface between a slave sub-system and a master sub-system in a chain of at least two sub-systems in a mobile communication base station system, each of the sub-systems comprising at least one slave sub-system and at least one master sub-system for controlling the time of the slave sub-system, the at least one master sub-systems comprising a synchronization master sub-system controlling a time synchronization of the chain to an external clock external to the chain, the controller device comprising: a slave transceiver, for receiving a received signal representing binary data from a master sub-system, the binary data having a bit duration controlled by a clock cycle of a transmit clock of the master sub-system, and the transmitting data to the master sub-system, the transceiver being connected with a clock input to a controllable phase locked loop, PLL, for clocking the transceiver with the transmit clock; and a synchronization device for synchronizing the transmit clock of the slave transceiver to a clock of a master transceiver of the master sub-system based on the received signal received from the master sub-system, the synchronization circuitry comprising: