Enhanced QOS support using Bluetooth low energy
US8964586B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2012 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | May 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Embodiments support stringent Quality of Service (QoS) requirements using adaptations to the existing Bluetooth Low Energy (BLE) protocols. In systems using an enhanced BLE protocol, the master send a poll frame at selected connection intervals or poll intervals. The duration of the connection interval and/or poll interval may be calculated based upon desired QoS parameters, such as delay, target packet error rate (PER), frame error rate (FER), and/or jitter. The master may consider the connection interval lost if a frame is not received from the slave after a predetermined number (m) of consecutive poll frames are transmitted. The value m may be set relatively high to provide more robustness in the system. However, the poll interval may also need to be adjusted to meet QoS requirements. The slave may be required to transmit a packet—that may or may not carry data—in response to every mth received poll.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.