Meaning
Radio frequency configuration parameter that defines the exact window of time a wireless node listens for incoming packets within a scheduled medium access control architecture. The specification of tsch receiver timing controls guard bands and sampling offsets to compensate for crystal oscillator drift across multi-hop mesh networks. Manufacturing test benches measure this parameter during the radio frequency characterization phase to verify that board-level components maintain synchronization tolerances under thermal stress.
Operation outside the specified timing window causes frame reception failure, leading to dropped packets and degraded network throughput.
Sampling Window
Component-level calibration determines the duration of the active listening interval inside each timeslot. Crystal tolerances on individual printed circuit boards dictate how early the transceiver must wake up before the nominal start of a transmission. Temperature variations shift local oscillator frequencies, requiring the receiver to widen its sample duration to capture incoming preambles reliably.
Production test procedures validate this adjustment range by subjecting assembled hardware to thermal chambers while running automated packet error rate sweeps.
Guard Band
Spatial separation in the time domain prevents adjacent channel interference and accounts for propagation delay across physical distances. Hardware integration teams calculate this buffer length based on maximum deployment range and antenna switching latencies specified in the board design schematic. Receiver circuitry maintains silence during the initial fraction of the timeslot to filter out reflections and residual energy from previous transmissions.
Qualification reports record these guard intervals against regulatory spectral mask limits during final type approval testing.
Drift Compensation
Algorithmic adjustment mechanisms update local clock counters upon successful reception of synchronization frames from neighboring nodes. firmware routines calculate the time delta between expected and actual packet arrival edges, applying a correction factor to subsequent wake-up schedules. Laboratory audits verify that this tracking loop maintains alignment over extended operational periods without exceeding current consumption limits defined in the power budget. Transceiver register settings store these compensation values permanently in non-volatile memory during the factory provisioning sequence.
