Timing synchronization function
Timing Synchronization Function (TSF) is specified in IEEE 802.11 WLAN standard to fulfill timing synchronization among users. A Timing Synchronization Function (TSF) keeps the timers for all station in the same BSS synchronized. All station shall maintain a local TSF timer. Each mobile host maintains a TSF timer with modulus 264 counting in increments of microseconds. The TSF is based on a 1-MHz clock and "ticks" in microseconds. On a commercial level, industry vendor assume the 802.11 TSF's synchronization to be within 25 microseconds.
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