Moreover, beyond network-layer metrics, SEE-V2X utilizes a USRP to capture lower-layer information, specifically MAC layer scheduling data, allowing for a deeper investigation into C-V2X. The following figure were collected in an intersection scenario involving four communication participants. Each participant simultaneously transmits perception data (4,000 bytes every 20 ms) and BSM data (128 bytes every 100 ms). In the figure, the green bars represent the resources allocated for perception data, while the yellow bars indicate the resources used for BSM data.
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