Method for code re-allocation in telecommunication systems, related system and computer product
US7397783B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Dec 11, 2002 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Oct 16, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J13/0044
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a code division multiple access transmission system (CDMA), codes are generated according to a tree structure organized on a plurality of layers. Each re-allocation is considered as an access request to the system by a new user and the re-allocation codes are transmitted to each involved user through the respective re-allocation messages. Re-allocation messages to users having the same spreading factor (SF), and hence the same service bit-rate (kR) are substantially sent simultaneously, in order to reduce to a minimum the time required for the re-allocation operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.