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Table 3 Designed superframe parameters

From: A cooperator-assisted wireless body area network for real-time vital data collection

Description

Parameter

Value

Data packet duration

T da t a

1.89 ms

Clear channel assessment

T CC A

0.128 ms

Beacon

T be a c o n

0.416 ms

CTS shared group frame

T CT S S G

0.384 ms

RTS frame

T RT S

0.416 ms

CTS frame

T CT S

0.416 ms

Long interframe space

T LI F S (TD M A/C S M A)

0.64 ms

 

T LI F S (TD M A)

3.16 ms1

Short interframe space

T SI F S

0.192 ms

Timeout time

T to

4.5 ms

Backoff time

T bo

2.24 ms

Timeslot duration

T ts

11.0 ms2

  1. 1We set the value of T LI F S (TD M A) so that the hybrid-TDMA/CSMA and TDMA have the same duration of a superframe
  2. 2For the sake of simplicity, in the TDMA, T ts is assumed to be the duration of two slots