IEEE 802.15 WPAN™
Task Group 4w (TG4w)
Low Power Wide
Area (LPWA)
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| IEEE Wireless Zone |
| IEEE 802.18 RR TAG |
| IEEE 802.19 Coex TAG |
| IEEE 802.20 MBWA |
| IEEE 802.21 MIHS |
| IEEE 802.22 WRAN |
| IEEE 802.23 ES |
Overview
The task of this workgroup is defining a Low Power Wide Area Network (LPWAN) extension to the IEEE Std 802.15.4 LECIM PHY layer to cover network cell radii of typically 10-15km in rural areas and deep in-building penetration in urban areas. It uses the LECIM FSK (Frequency Shift Keying) PHY modulation schemes with extensions to lower bit-rates (e.g. payload bit-rate typically < 30 kb/s). Additionally, it extends the frequency bands to additional sub-GHz unlicensed and licensed frequency bands to cover the market demand. For improved robustness in channels with high levels of interference, it defines mechanisms for the fragmented transmission of Forward Error Correction (FEC) code-words, as well as time and frequency patterns for the transmission of the fragments. Furthermore, it defines lower code rates of the FEC in addition to the K=7 R=1/2 convolutional code. Modifications to the Medium Access Control (MAC) layer, needed to support this PHY extension, are defined.
Information
Who to contact with questions
- Chairman: Jörg Robert
- Technical Editor: Johannes Wechsler
- Secretary: Charlie Perkins
The Institute of Electrical and Electronics Engineers, Inc.
