Patent ID: 9380548
Filing Date: 2016-06-28
CPC Classification: H04J,H04L,H04W

Claim Text:
1. A clustering apparatus for controlling timing, comprising: a receiver configured to receive a neighbor list regarding potential master information for providing a timing packet from a server; and a processor configured to determine a best master having a higher master-slave quality level among potential masters that provides a timing packet based on the neighbor list, organize a cluster having linkability between the best master and at least one slave, and perform synchronization between the best master and said at least one slave for each cluster, wherein the master-slave quality level includes a master's quality level that is determined by a network assisted global navigation satellite system (AGNSS) quality information of the potential masters and a network's quality level that is determined by packet delay variation (PDV) quality information of the timing packet received by said at least one slave from the potential masters, and wherein the master-slave quality level includes the master's quality level that is determined by AGNSS quality information of the potential masters with a first weight given thereto and the network's quality level that is determined by PDV quality information of the timing packet received by a specific slave from the potential masters with a second weight given thereto.