Packet Formats
Disclaimer
The IEEE802.15.4e has not been adopted yet, and the current version of the draft standard is not public. The packet formats presented in this page represent our "best guess" at what the standard will define. These formats allow us to start implementing and test interoperability, and we don't expect major difference in the final standard.
We do recommend you implement parsing functions as standalone functions to be able to swap them for their final version once the standard is public.
Overview
IEEE802.15.5e packets contain an IEEE802.15.4 header with a version number incremented to 2 (b10). This header is followed by a IEEE802.15.4e-specific header or by data payload.
There are 3 packet formats:
- #advertisement (ADV)
- #data packet
- #acknowledgement (ACK)
advertisement
The IEEE802.15.4 frame type is set to beacon.
The IEEE802.15.4e-specific header contains the ASN.
There is no upper-layer payload.
data
The IEEE802.15.4 frame type is set to data.
There are no IEEE802.15.4e-specific headers.
Upper-layer payload immediately follows the IEEE802.15.4 header.
acknowledgement
The IEEE802.15.4 frame type is set to acknowledgement.
The IEEE802.15.4e-specific header contains the time correction.
There is no upper-layer payload.