Movable telephone communication system
US5640443A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 1994 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Mar 9, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W60/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a mobile telephone communication system which performs telephone communications with a group including mobile subscribers to improve the rate of receiving telephone calls and quality of communication, the plurality of mobile subscribers each sends out information including a location number and a subscriber telephone number. A mobile switch center receives information from each mobile subscriber via a corresponding one of radio base stations and performs control of the calls from the mobile subscribers. The mobile switch center has a subscriber data table that stores a group indication which indicates the mobile subscribers of the group and a group number corresponding to the group as subscriber data, and performs, upon the occurrence of the registration of changing the state of one mobile subscriber, the same registration of changing the state (idle or busy) for all remaining mobile subscribers in the group, referring to the group indication and the group number sent from the one mobile subscriber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.