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- The process is similar to that of BS. The frequency offset is pre-corrected. The Ranging and BW Request are generated at the physical layer and a code is selected according to the indication at the MAC layer.
- After the modulation, they are mapped to competitive slots selected at the MAC layer. Later, they are the same as the normal data.
- The process is similar to that of BS. The frequency synchronization is added.
- It is not required to detect the competitive codes of Ranging and bandwidth request.