초록 ▼

Synchronization is effected in a cellular telecommunications network (20) between a master timing unit (60) located at control node (30) of the network and a slave timing unit (STU) located either at the control node or a controlled node, e.g., base station (22), of the network. In accomplishing the

Synchronization is effected in a cellular telecommunications network (20) between a master timing unit (60) located at control node (30) of the network and a slave timing unit (STU) located either at the control node or a controlled node, e.g., base station (22), of the network. In accomplishing the synchronization, one of the master timing unit or the slave timing unit serves as an initiating timing unit for transmitting a synchronization analysis command message including a first parameter (t1) to the other of the timing units which serves as a responding timing unit. In response, the responding timing unit sends a synchronization analysis response message which includes at least second parameter (t2) and preferably a third parameter (t3) to the initiating timing unit. The initiating unit uses e.g., parameters extracted from the synchronization analysis response message to determine a synchronization adjustment value for the slave timing unit. When the master timing unit is the initiating timing unit, the master timing unit transmits the synchronization adjustment value in a synchronization updating command message to the slave timing unit.

대표청구항 ▼

1. A cellular telecommunications network comprising:a master timing unit located at a control node of the network; a slave timing unit located at the control node or a controlled node of the network; wherein one of the master timing unit and the slave timing unit serves as an initiating timing unit

1. A cellular telecommunications network comprising:a master timing unit located at a control node of the network; a slave timing unit located at the control node or a controlled node of the network; wherein one of the master timing unit and the slave timing unit serves as an initiating timing unit for transmitting a synchronization analysis command message including a first parameter to a responding timing unit, the responding timing unit being the other of the master timing unit and the slave timing unit the first parameter being a first time stamp value t1 related to the time that the synchronization analysis command message is transmitted from the initiating timing unit; wherein in response to the synchronization analysis command the responding timing unit sends a synchronization analysis response message including a second parameter to the initiating timing unit, the second parameter being a second time stamp value t2 related to the time that the synchronization analysis command message is received at the responding timing unit; wherein the initiating timing unit uses the first parameter and the second parameter included in the synchronization analysis response message to determine a synchronization adjustment for the slave timing unit.