| US 7,489,942 B2 | ||
| Method and apparatus for soft handoff communications in a communication system operating according to IS-95B and IS-95C standards | ||
| Louay Jalloul, Palatine, Ill. (US); Keith A. Tenbrook, Cary, Ill. (US); Yuda Yehuda Luz, Buffalo Grove, Ill. (US); Jiangnan (Jason) Chen, Darien, Ill. (US); and Ron Rotstein, Arlington Heights, Ill. (US) | ||
| Assigned to Motorola, Inc., Schaumburg, Ill. (US) | ||
| Filed on Feb. 04, 2004, as Appl. No. 10/772,030. | ||
| Application 10/772030 is a division of application No. 09/545125, filed on Apr. 07, 2000, granted, now 6,768,908. | ||
| Prior Publication US 2004/0157609 A1, Aug. 12, 2004 | ||
| Int. Cl. H04B 7/00 (2006.01); H04M 1/00 (2006.01); H04Q 7/20 (2006.01) | ||
| U.S. Cl. 455—522 [455/67.11; 455/442; 455/552.1] | 2 Claims |
| 1. An apparatus for detecting a broadcast control channel energy in a multi-generational mobile station comprising:
a pseudo-noise despreader for despreading a received broadcast control channel signal according to a known base station pseudo-noise
sequence;
a broadcast control channel Walsh Code despreader for despreading the received signal according to a known Walsh Code for
the broadcast control channel;
a signal energy calculator for calculating a signal energy of the signal despread by the pseudo-noise despreader and the Walsh
Code despreader;
a multiplier for scaling the calculated signal energy according to a preset scaling factor; and
a comparator for comparing the scaled signal energy to a threshold.
|