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Table 4 Handover strategy: S-sticky, t-multihop = 2 moving away

From: Seamless internet 3G and opportunistic WLAN vehicular connectivity

Tree-depth

DRSU (m)

Density

Time 3G (s)

Time WLAN (s)

Offload (%)

# Handoffs

Improvement (%)

2

1000

LO

10.51 ± 0.11

29.99 ± 0.11

74.04

1.30

32.89

 

1000

HI

10.15 ± 0.10

33.81 ± 0.10

76.90

1

38.15

 

2000

LO

49.53 ± 0.09

32.32 ± 0.09

39.49

2.13

41.90

 

2000

HI

52.40 ± 0.09

37.68 ± 0.09

41.82

1.63

50.09

 

3000

LO

91.35 ± 0.09

31.85 ± 0.09

25.85

2.11

39.74

 

3000

HI

98.33 ± 0.09

37.68 ± 0.09

27.70

1.49

49.12

3

1000

LO

10.46 ± 0.09

30.04 ± 0.09

74.17

1.34

33.13

 

1000

HI

10.12 ± 0.10

33.84 ± 0.10

76.97

1

38.30

 

2000

LO

44.16 ± 0.10

37.69 ± 0.10

46.04

3.40

65.45

 

2000

HI

43.69 ± 0.08

46.39 ± 0.08

51.49

2.58

84.78

 

3000

LO

85.89 ± 0.08

37.32 ± 0.08

30.29

3.46

63.74

 

3000

HI

89.05 ± 0.11

46.96 ± 0.11

34.52

2.61

85.83