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Table 10 ATMV 1 and ATVM 2 summarization.

From: Adjustable TXOP mechanism for supporting video transmission in IEEE 802.11e HCCA

Mechanism properties

ATMV1

ATMV2

Number of states

4-state finite state machine

5-state finite state machine

Video characteristic

Burst arrival

High burst arrival

Supported video categories

Slight movement

Gentle walking, Rapid movement

Coefficient factor for bounding the range of the particular event

δ1 = 1

δ1 = 1

 

δ2 = 1.5

δ2 = 1.5

 

δ3 = 2.5

δ3 = 2.5

  

δ4 = 4

Coefficient factor for bounding the allocated queue size

γ1 = 1

γ1 = 1

 

γ2 = 1.5

γ2 = 1.5

 

γ3 = 2.5

γ3 = 2.5

 

γ4 = 3

γ4 = 3

  

γ5 = 4

Maximum granted TXOP duration for flow i

TXOP i = ⌊ γ 4 q ̄ i L i ⌋ × L i R data +O

TXOP i = ⌊ γ 5 q ̄ i L i ⌋ × L i R data +O

Computational complexity

O(n), where n is a number of active flows in the polling list