Orthogonal variable spreading factor (OVSF) code assignment
US7379489B2 · kind B2 · utility
69Cited by
13References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2003 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Sep 20, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J13/0044
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention includes a system and methods for orthogonal variable spreading factor (OVSF) code assignment, de-allocation and code tree pruning. The invention also includes OVSF code identification and storage schemes. Embodiments are provided for code tree pruning, code assignment and de-allocation. These embodiments apply to both slotted and non-slotted code division multiple access systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.