Method of reducing access time to UTRAN in UMTS
US7301921B2 · kind B2 · utility
17Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 9, 2002 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Jan 14, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/0833
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of reducing access time to a UTRAN in UMTS. Upon receipt of a preamble signature from a UE, the UTRAN determines whether the preamble signature is in current use. If the preamble signature corresponds to an available RACH, the UTRAN transmits a positive AICH to the UE. If the preamble signature corresponds to an RACH in current use, the UTRAN determines whether there is a signature corresponding to an available RACH. If all signatures are in use, the UTRAN transmits a negative AICH to the UE.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.