US 6,983,151 B2
Method, apparatus and system for synchronization in radio communication systems
Jacobus Haartsen, Hardenberg (Netherlands)
Assigned to Telefonaktiebolaget L M Ericsson (publ), Stockholm (Sweden)
Filed on Apr. 23, 2001, as Appl. No. 9/840,399.
Prior Publication US 2002/0155850 A1, Oct. 24, 2002
Int. Cl. H04Q 7/20 (2006.01)
U.S. Cl. 455—452.1 29 Claims
OG exemplary drawing
 
1. A method for synchronization in radio communication systems, the method comprising the steps of:
encapsulating symbols in an information stream;
modulating the information stream; and
sending the modulated information stream over a communication channel;
wherein symbols in a group of symbols have robustness levels that decrease from a start of the group to an end of the group according to a predetermined pattern, and signal in information indicating the decrease in robustness level is omitted from the information stream.