Types of polling systems ·Exhaustive system Can send data arrives prior to the end of data interval Gated system Can send data arrives prior to reservation interval o Partially gated system Can send data arrives prior to data interval Limited service system Only one (k)packets can be sent in one data interval R1 D1 R2 D2 R3 D3 R1 D1 R2 D2 Gated system→ —Exhaustive system Partially gated system Weigiang Sun Communication Networks 3Weiqiang Sun Communication Networks Types of polling systems • Exhaustive system – Can send data arrives prior to the end of data interval • Gated system – Can send data arrives prior to reservation interval • Partially gated system – Can send data arrives prior to data interval • Limited service system – Only one (k) packets can be sent in one data interval 3 R1 D1 R2 D2 R3 D3 R1 D1 R2 D2 Gated system Exhaustive system Partially gated system