The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2001
Filed:
Feb. 03, 1999
Jong-Ok Kim, Seoul, KR;
Shinsegi Telecomm, Inc., Seoul, KR;
Abstract
A carrier changing apparatus in a mobile telecommunication system for generating a dummy frequency assignment signal for repeating a frequency conversion or providing a hard hand off based on a traffic signal is provided. In the carrier changing apparatus, a transmitting carrier changer transmits an input forward traffic signal having traffic and overhead information and generates a forward dummy frequency assignment signal based on the forward traffic signal. A receiving carrier changer receives and outputs a reverse traffic signal having traffic and overhead information from a mobile station and generates a delayed reverse traffic signal based on a reverse dummy frequency assignment signal from the mobile station. Since the carrier changing apparatus generates a dummy frequency assignment signal for repeating a frequency conversion or providing a hard hand off by using a traffic signal, it can repeat a frequency conversion and provide a hard hand off without using an additional dummy frequency assignment signal device. Therefore, efficiency of the carrier changing apparatus can lower the cost of equipment.