Wireless digital personal communications system having voice/data/image two-way calling and intercell hand-off
US5325419A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1993 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Jan 4, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wireless digital personal communications system (or PCS) having a plurality of intelligent base stations and portable handset terminals, each having a predetermined radio cell coverage area. The radio cell, radio-telephone PCS has a full ISDN interface. The personal communications system facilitates direct interconnection and switching of PCS call traffic through the ISDN interface and the public switched telephone network, or any switched network. The personal communications system has voice/data/image (or any combination thereof), and incoming and outgoing calling capability. The PCS is fully operational and compatible with any modulation approach selected The intercell protocol hand-off being provided through distributed logic which is implemented in software that is resident in the intelligent portable handset terminals, in the intelligent base stations, and in the public switched telephone network (or any switched network). Alternative embodiments of the present invention include a wireless digital personal communications system having authentication means for authenticating a remote device; a wireless digital personal communications system having a combination of authentica…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.