Patent ID: 9026610
Filing Date: 2015-05-05
Classification: H04L

Abstract:
1. A method of communication in a broadcast group, said group comprising at least two sources and a server that send real time data and control data, a source replying to the control data sent by the server and not replying to the control data sent by another source, said at least two sources comprising a first source and a second source, said method comprising the following steps implemented by the first source of the group: sending first control data by broadcasting to members of the broadcast group, said first control data comprising time information relating to an exchange of control data of the first source with the server, the time information including Network Time Protocol (NTP), Last Sender Report (LSR), and Delay Since Last Sender Report (DLSR) data; receiving from the second source of the group second control data, said second control data comprising time information relating to an exchange of control data of said second source with the server; receiving from the server third and fourth control data, said third control data comprising time information relating to the first control data, and said fourth control data comprising time information relating to the second control data; and determining a transmission time between the first and second sources on the basis of the second, third and fourth control data received, performed by the first source without receiving a reply from any of the at least two sources to the step of sending the first control data to the members of the broadcast group.