RAU optimization for UMTS URA connected state
US6765890B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2000 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Oct 1, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/24
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An improved technique reduces unnecessary routing area updates, while ensuring that the location of a mobile terminal is known when the mobile terminal starts data communication after being in a standby state. Routing area updates are controlled in a packet radio access network architecture having a common routing area controlled by a core network and supported by a first wireless access system and a second wireless access system. The first radio access system provides a mode of operation in which a radio link is maintained between a mobile terminal and the first radio access system after completion of a data transmission. A routing area update takes place if the mobile is located in the second radio access system routing area when the next data transmission is initiated. Additionally, if packet transmission is initiated by the core network, the first radio access system receives a paging request and responsive to receipt of the paging request, the first radio access system pages the core network common routing area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.