Table 1.

Parameters for Performance Evaluation.

Parameter	Value (B: Bytes)	Description
Lheader	23 B	the header size (PHY: 6 B, Medium Access Control: 11 B, Deluge: 6 B)
Lpage	1024 B	the default page size of Deluge in TinyOS
Lpaylod	variable	the payload size for DATAs (the default payload size of Deluge in TinyOS: 22 B)
LADV	29 B	the size of the ADV (PHY header: 6 B, Medium Access Control header: 11 B, Deluge: 12 B)
LREQ	32 B	the size of the REQ (PHY header: 6 B, Medium Access Control header: 11 B, Deluge: 15 B)
Lhash	20 B	the hash size in SHA-1
LMAC	20 B	the MAC size in HMAC
Lsig	40 B	the digital signature size in ECDSA-160
m/N	92	false positive of 6.36 × 10−20
k	64	(m/N)ln 2
code image size	10/20/30	unit: kB
Vsup	3 V	the supply voltage in TelosB [28]
Itx	19.5 mA	the current when the MCU is on and the radio is TX in TelosB [28]
Irx	21.8 mA	the current when the MCU is on and the radio is RX in TelosB [28]
Imcu	1.8 mA	the current when the MCU is on and the radio is off in TelosB [28]
Iidle	54.5 μA	the current when the MCU is idle and the radio is off in TelosB [28]
Isleep	5.1 μA	the current when the MCU is standby and the radio is off in TelosB [28]
SO/BO	6/7	the parameters to determine SD and BI
TSIFS	192 μs	the duration of SIFS (short interframe spacing)
TLIFS	640 μs	the duration of LIFS (long interframe spacing)
Tbackoff	R × 320 μs	the backoff period. r is a random value between 0 and 3
Tinactive	983,040 μs	the duration of the inactive period when SO and BO is 6 and 7
Tbyte	32 μs	the time for transmitting one byte in TelosB
Tlong	variable	the long frame period over which a ADV/REQ/DATA is transmitted frame size (bytes) × byte transmission time (32 μs)
Thash	0.35 ms	the hash computation time in TelosB [29]
TMAC	0.71 ms	the MAC computation time in TelosB [29]
Tsig	1.02 s	the signature verification time in TelosB [30]