Frequency offset hopping for telecommunications
US7421005B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2003 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Jan 20, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/715
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A frequency hopping sequence generator system (40) for use in a radio telecommunications system utilizes variable frequency offsets (FO) to determine a frequency hopping sequence for use in communication between a mobile station and a network node. The frequency hopping sequence generator comprises a frequency offset hopping generator (42) which chooses the variable frequency offsets so that the frequency hopping sequence provides intra-cell interference diversity. For each mobile station, the frequency offset hopping generator determines a frequency offset index (FOI) which is mapped to one of plural possible frequency offsets (FO). The frequency offset index (and thus the corresponding frequency offset) is determined to provide the frequency hopping sequence with both interference diversity and orthogonality. The frequency offset index has an inter-cell component (that provides, e.g., collision diversity between FO hopping sequences that are not orthogonal) and an intra-cell component (that provides orthogonal (non-colliding) sequences with a variable difference between two sequences).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.