Method for controlling operational states of a MAC layer in an OFDM mobile communication system
US7319680B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 2004 |
| Grant date | Jan 15, 2008 |
| Priority date | — |
| Expiry date | Dec 22, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/27
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A mobile communication system includes a medium access control (MAC) layer that supports an idle state in which no downlink and uplink dedicated control channel and dedicated traffic channel exists and also supports an active state in which the downlink and uplink dedicated control channel and dedicated traffic channel exist. The MAC layer controls transitioning to a contention state and then transitioning from the contention state to the active state through contention-based access, if there is transmission data in the idle state; transitioning to a fast access state or a slow access state according to priority of the data if there is no transmission data in the active state for a preset time; transitioning to the active state through contention-free-based access if there is transmission data in the fast access state; and transitioning to the active state through contention-free-based access if there is transmission data in the slow access state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.