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:
May. 01, 2001
Filed:
Oct. 22, 1997
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04Q 7/00 ; H04J 3/16 ; H04B 7/212 ;
U.S. Cl.
CPC ...
H04Q 7/00 ; H04J 3/16 ; H04B 7/212 ;
Abstract
A digital radio network having a first single random access for packet data is enhanced by providing a second access which includes a second random access channel for controlled short data messages and a polled data channel for larger data messages. All mobiles operating within the system can access the first channel but only dual-mode mobiles can connect to the second access.