Table 1.
Characteristics analysis of existing clustering protocols for CRSNs.
Fig 1.
Illustration of CRSNs clustering structure.
Fig 2.
ON/OFF model for spectrum usage of PUs.
Fig 3.
Periodical round structure of TD-IMOCRP.
Fig 4.
Transmission schedule of serving time-triggered traffic.
Fig 5.
Transmission schedule of serving event-driven traffic.
Fig 6.
Periodical structure of TD-IMOCRP if event-driven data transmission can be finished in one-round period.
Fig 7.
Periodical structure of TD-IMOCRP for cross-round event-driven data transmission.
Fig 8.
Comparison results of number of living nodes.
(A) The sink is located at the center. (B) The sink is located at (0,0).
Fig 9.
Comparison results of data packet delay.
(A) The sink is located at the center. (B) The sink is located at (0,0).
Table 2.
Comparison results of network lifetime.
Fig 10.
Comparison results of network energy consumption per round.
(A) The sink is located at the center. (B) The sink is located at (0,0).
Fig 11.
Comparison results of total energy consumption.
(A) The sink is located at the center. (B) The sink is located at (0,0).
Fig 12.
Comparison results of number of covered nodes per round.
(A) The sink is located at the center. (B) The sink is located at (0,0).
Fig 13.
Comparison results of average number of covered nodes.
(A) The sink is located at the center. (B) The sink is located at (0,0).
Fig 14.
Comparison results of average energy consumption of nodes per round.
(A) The sink is located at the center. (B) The sink is located at (0,0).