Mobile communication system

Details Mobile communication system Mobile communication system

1997-09-25

2000-11-07

Marcelo, Melvin

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

370514, H04J 1300

Patent

active

061446505

ABSTRACT:
In a CDMA/TDD cellular system, time necessary for a mobile station to carry out initial synchronization, judgment of the most preferable base station, and acquisition of synchronization of a long code is shortened. A reception base band processing portion 27 reproduces perch channel data from received signals using symbol timing acquired by a synchronous circuit 28. The synchronous circuit 28 detects a unique word from the perch channel data to acquire slot synchronization. A reception level detection circuit 29 judges a base station using a short code of the maximum acquired reception level in the perch channel data to be the nearest. A base station transmits perch channel data in which information with respect to frame timing and information with respect to the kind of a long code used in down communication channel data are interpolated. The synchronous circuit 28 receives the information, acquires frame synchronization, and, using the information with respect to the kind of the long code, acquires long code synchronization.

REFERENCES:
patent: 5673260 (1997-09-01), Umeda et al.
patent: 5819165 (1998-10-01), Hulkko et al.
patent: 5832368 (1998-11-01), Nakano et al.
patent: 5933782 (1999-08-01), Nakano et al.

Affiliated with

Also associated with

Rating

Mobile communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mobile communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mobile communication system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1648488