Frequency and channel hopping communication in a TDMA cellular mobile radio system
US5581548A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1994 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Dec 19, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/7154
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
According to method and apparatus for communication in a cellular TDMA mobile radio communication system with channel hopping, base and mobile stations transmit radio signal bursts in time slots of a plurality of radio channels in accordance with channel hopping schemes. All of the schemes used by a base and mobile stations in a cell are free from coincidence on any radio channel with any other of the schemes used for transmission within the same cell. A scheme used by a mobile station in one cell occasionally coincides on a radio channel with a scheme used by a mobile station in another cell. The major part of every channel shifting scheme used by a mobile station in a cell is free from coincidence on any radio channel with the major part of any channel hopping scheme used by a mobile station in another cell. The signal to interference ratio or other signal characteristics such as signal strength or bit error rate for signals received by mobile stations are estimated and compared, and the output power of stations are controlled. The existence of further possible channel hopping schemes in a cell, free from coincidence on every radio channel with every other of the channel hopping …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.