公开(公告)号：DE69221677T2

公开(公告)日：1998-02-12

申请号：DE69221677

申请日：1992-05-26

Applicant: IBM

Inventor： MILLER ROBERT VICTOR ,  MOORE VICTOR STUART ,  PATE THOMAS KENT

IPC: H04W16/04 ,  H04W16/14 ,  H04W72/00 ,  H04W76/04 ,  H04W92/02 ,  H04Q7/20

Abstract: According to one aspect of the invention, methods and apparatus are provided for performing Cellular Data Networking (CDN), i. e., identifying, collecting and utilizing otherwise unused or unusable air time, in an existing Advanced Mobile Telephone System (AMPS). According to another aspect of the invention, a Digital Cellular Overlay Network (DCON) is provided for performing CDN utilizing an underlying AMPS, where the DCON is transparent, with respect to the AMPS, and takes full advantage of existing AMPS equipment to keep the cost of performing CDN to a minimum. The resulting digital network may be used for high speed non-interfering data communications, i.e., data communications that do not degrade the underlying system's capacity and capability (qualitatively) to handle voice traffic. The invention also is directed to methods and apparatus which contemplate the expanded use of well known radio control signals, in particular "busy bits" and "dotting sequences", to provide a DCON capable of performing CDN that in both a reliable and flexible manner.

公开(公告)号：DE69221677D1

公开(公告)日：1997-09-25

申请号：DE69221677

申请日：1992-05-26

Applicant: IBM

Inventor： MILLER ROBERT VICTOR ,  MOORE VICTOR STUART ,  PATE THOMAS KENT

IPC: H04W16/04 ,  H04W16/14 ,  H04W72/00 ,  H04W76/04 ,  H04W92/02 ,  H04Q7/20

Abstract: According to one aspect of the invention, methods and apparatus are provided for performing Cellular Data Networking (CDN), i. e., identifying, collecting and utilizing otherwise unused or unusable air time, in an existing Advanced Mobile Telephone System (AMPS). According to another aspect of the invention, a Digital Cellular Overlay Network (DCON) is provided for performing CDN utilizing an underlying AMPS, where the DCON is transparent, with respect to the AMPS, and takes full advantage of existing AMPS equipment to keep the cost of performing CDN to a minimum. The resulting digital network may be used for high speed non-interfering data communications, i.e., data communications that do not degrade the underlying system's capacity and capability (qualitatively) to handle voice traffic. The invention also is directed to methods and apparatus which contemplate the expanded use of well known radio control signals, in particular "busy bits" and "dotting sequences", to provide a DCON capable of performing CDN that in both a reliable and flexible manner.