C. Network Throughput
We define Si as the airtime used by Node i.
The airtime is the time to reserve a radio resource before transmitting a data frame.
The airtime of the jth RTS frame transmission of Node i is expressed as sij .
The airtime consists of the durations of the DIFS(DIFS), the transmission time of the RTS(RTS), the durations of the SIFS(SIFS), and the transmission time of the CTS(CTS) from the receiving node as shown in Fig. 3.
The time used for retransmission in case of transmission failure is also included in the airtime. According to assumption (3), we do not include the back-off time in the airtime.
If Node i transmits N RTS frames, then the airtime expended by Node i is obtained as Si =
N
j=1 sij .
We consider a sufficiently long period [0, Time]. Let x = |Si|/Time, and let y = áx, where
Here, y indicates the normalized time expended from data transmission to ACK reception, namely, the duration of two SIFS, the transmission time of data frame(FRAME), and the transmission time of the ACK(ACK), as shown in Fig. 3. Using the probability of transmission failure ñ, the network throughput T is
C. Network ThroughputWe define Si as the airtime used by Node i. The airtime is the time to reserve a radio resource before transmitting a data frame. The airtime of the jth RTS frame transmission of Node i is expressed as sij . The airtime consists of the durations of the DIFS(DIFS), the transmission time of the RTS(RTS), the durations of the SIFS(SIFS), and the transmission time of the CTS(CTS) from the receiving node as shown in Fig. 3. The time used for retransmission in case of transmission failure is also included in the airtime. According to assumption (3), we do not include the back-off time in the airtime. If Node i transmits N RTS frames, then the airtime expended by Node i is obtained as Si =Nj=1 sij .We consider a sufficiently long period [0, Time]. Let x = |Si|/Time, and let y = áx, whereHere, y indicates the normalized time expended from data transmission to ACK reception, namely, the duration of two SIFS, the transmission time of data frame(FRAME), and the transmission time of the ACK(ACK), as shown in Fig. 3. Using the probability of transmission failure ñ, the network throughput T is
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