Method of covering shadow areas in a cellular mobile radio system and radio booster for implementing this method
US5659879A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1994 |
| Grant date | Aug 19, 1997 |
| Priority date | — |
| Expiry date | Jul 20, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W16/32
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A mobile radio network comprises a base transceiver station for transmitting and receiving radio signals to and from mobiles on different basic frequencies and a radio booster for receiving, amplifying and retransmitting radio signals to and from at least one shadow area. To cover the shadow areas a radio signal received by a radio booster from the base transceiver station on a basic frequency is retransmitted to a mobile station on a translated frequency different from the basic frequency and associated with the latter by a translation law. This law is such that, firstly, each of the basic frequencies is either associated with at least one translated frequency or is not associated with any translated frequency and, secondly, the difference between the value of a translated frequency and the value of the associated basic frequency is not the same for all the translated frequencies. A radio signal received by a radio booster from a mobile on a translated frequency is retransmitted to the base transceiver station on the associated basic frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.