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. 30, 2003
Filed:
Jun. 14, 2001
Leonard Lee, Cary, NC (US);
Evin Feli, San Diego, CA (US);
Ericsson, Inc., Research Triangle Park, NC (US);
Abstract
A method and device(s) for increasing the Cellular Digital Packet Data (CDPD) user data rate between a mobile terminal and a basestation in a digital cellular mobile communications system. The method and device(s) use the same modulation scheme that is used for digital speech to encapsulate CDPD block data, specifically, the TIA/EIA-136 standard. The TIA/EIA-136 standard can accommodate more data than the GMSK modulation scheme that is typically used for CDPD block data. In order to encapsulate CDPD block data using the TIA/EIA-136 standard, an encoding step is performed on the sending end that includes constructing a CDPD block comprised of CDPD data, assembling an TIA/EIA-136 frame leaving the data fields of the frame empty, and placing CDPD block data in the data fields. The assembled TIA/EIA-136 frame is then sent using existing transmission code. To unpack the CDPD block data, a decoding step is performed on the receiving end that includes receiving the TIA/EIA-136 frame comprised of CDPD data in the data fields of the TIA/EIA-136 frame, and re-constructing the CDPD block from the data fields. Once re-constructed, the CDPD block is forwarded to existing CDPD upper layer code for further processing.