Method for TDMA management, central station, terminal station and network system to perform this method

摘要

To allocate time slots to terminal stations (T1 ... Ti ... Tn) for transmission of upstream burst (UB) in a network system wherein a central station (CS) is coupled to a plurality of terminal stations (T1 ... Ti ... Tn), the central station (CS) downstream transmits access grant information (AGI) which forms part of downstream frames (DF). Each terminal station (Ti) is equipped with a cyclic local grant counter (LGC) which generates a local grant counter value between zero and a predetermined limit, and which is synchronized with a cyclic master grant counter (MGC) included in the central station (CS). The upstream time slots are bounded by two zero crossings of the cyclic local grant counter (LGC) and a terminal station (Ti) is allowed to transfer an upstream burst (UB) in such a time slot provided that this time slot is allocated to the terminal station (Ti) via previously received access grant information (AGI). <IMAGE>