Dear Sukaina Shukur,

for the structure of MAC data frames in LR-WPANs see the following figures: https://www.researchgate.net/publication/319205134_6LoWPAN Fig. 8206: Structure of MAC data frames in LR-WPANs according to IEEE 802.15.4

https://www.researchgate.net/publication/320003101_Protocol_structure_of_6LoWPAN_devices Figure 2: Logical structure of the network layer in IoT devices according to 6LoWPAN Figure 3: The possibilities of compressing IPv6 and UDP headers

Best regards

Anatol Badach

for 6LoWPAN it is 127 bytes.

Sukaina Shukur You can find in this paper. Read the simulation results section.

https://www.academia.edu/3385623/Minimizing_Single_TDMA_Frame_Sizes_in_Alarm-driven_Wireless_Sensor_Networks_Applications