Patent number: 9432957
Abstract: In a method and in a system for time synchronization within a mobile ad-hoc network, every node (31, 32, 33, 34, 35, 36, 37, 38) of the mobile ad-hoc network transmits a message signalling a presence (1), in each case within a given time frame. The received message signalling a presence (1) is acknowledged by every node (31, 32, 33, 34, 35, 36, 37, 38) disposed within the transmission range of the transmitting node (31, 32, 33, 34, 35, 36, 37, 38), in each case with an acknowledgement message (2). On the basis of the information in an acknowledgement message (2) which one of the two nodes (31, 32, 33, 34, 35, 36, 37, 38) receives, that node (31, 32, 33, 34, 35, 36, 37, 38) of two nodes (31, 32, 33, 34, 35, 36, 37, 38) disposed within the transmission range of one another is specified, with the local time of which the respectively other node (31, 32, 33, 34, 35, 36, 37, 3831, 32, 33, 34, 35, 36, 37, 38) synchronizes its local time.
Type:
Grant
Filed:
March 27, 2013
Date of Patent:
August 30, 2016
Assignee:
ROHDE & SCHWARZ GMBH & CO. KG
Inventors:
Hagen Pfeifer, Gerhard Gläser
Publication number: 20150139199
Abstract: In a method and in a system for time synchronization within a mobile ad-hoc network, every node (31, 32, 33, 34, 35, 36, 37, 38) of the mobile ad-hoc network transmits a message signalling a presence (1), in each case within a given time frame. The received message signalling a presence (1) is acknowledged by every node (31, 32, 33, 34, 35, 36, 37, 38) disposed within the transmission range of the transmitting node (31, 32, 33, 34, 35, 36, 37, 38), in each case with an acknowledgement message (2). On the basis of the information in an acknowledgement message (2) which one of the two nodes (31, 32, 33, 34, 35, 36, 37, 38) receives, that node (31, 32, 33, 34, 35, 36, 37, 38) of two nodes (31, 32, 33, 34, 35, 36, 37, 38) disposed within the transmission range of one another is specified, with the local time of which the respectively other node (31, 32, 33, 34, 35, 36, 37, 3831, 32, 33, 34, 35, 36, 37, 38) synchronizes its local time.
Type:
Application
Filed:
March 27, 2013
Publication date:
May 21, 2015
Inventors:
Hagen Pfeifer, Gerhard Gläser