Quality of service differentiation in wireless networks
US6937591B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2003 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | Aug 6, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W28/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method provides differentiated quality of service (QoS) by providing adaptive updates to media access control (MAC) layer parameters on a distributed basis. The method includes calculating a failure probability for a transmission over the network, determining a target value for determining a contention window according to a mapped function of the failure probability, and altering the contention window according to a scaling function of the target value. The mapped function and the scaling can provide QoS differentiation. A wireless device ensures fairness in a wireless time slotted network and includes a network interface card (NIC), a network driver interface, a network monitor, a statistics engine, and an adaptive parameter engine for determining a target value for determining a contention window according to a mapped function of the one or more probabilities to enable an alteration of the contention window and provide new parameters for the MAC layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.