Standard azimuth analysis(宜蘭市 &羅東鎮 )

• 1. simulation model: Atoll cross wave• 2. site position and height: follow 2G site setting• 3. Antenna tilt: 2G setting but 2 degree down tilt more• 4. frequency& bend: Bend 3, 1800MHz, 15MHz,

normal CP

Simulation setting

Computation zone polygon

宜蘭市 羅東鎮

宜蘭市區

宜蘭縣政府羅東市區

Case1 (0/120/240)

SINR RSRP

Case2 (10/130/250)

SINR RSRP

Case3 (20/140/260)

SINR RSRP

Case4 (30/150/270)

SINR RSRP

Case5 (40/160/280)

SINR RSRP

Case6 (50/170/290)

SINR RSRP

Case7 (60/180/300)

SINR RSRP

Case8 (70/190/310)

SINR RSRP

Case9 (80/200/320)

SINR RSRP

Case10 (90/210/330)

SINR RSRP

Case11 (100/220/340)

SINR RSRP

Case12 (110/230/350)

SINR RSRP

Compare tableazimuth Mean

RSRP(dBm)RSRP>=-100

RSRP>=-80

MeanSINR(dB)

SINR>=0

SINR>=10

0/120/240 -91.64 81.17 11.54 6.5 80.49 30.43

10/130/250 -91.63 81.21 11.4 6.61 79.66 31.32

20/140/260 -91.76 80.46 11.3 6.5 78.72 31.21

30/150/270 -91.96 79.18 11.21 6.31 77.98 30.68

40/160/280 -92.2 77.7 10.99 6.03 77.02 29.97

50/170/290 -92.43 77.11 10.92 5.7 76.42 28.03

60/180/300 -92.62 76.72 11 5.38 76.85 25.03

70/190/310 -92.7 76.8 11.2 5.18 77.43 21.68

80/200/320 -92.63 76.62 11.26 5.23 78.41 21.82

90/210/330 -92.45 77.09 11.28 5.42 78.84 23.13

100/220/340 -92.19 78.55 11.25 5.72 79.12 25.51

110/230/350 -91.98 79.31 11.32 5.98 79.07 27.94

*loading=50% in SINR simulation

RSRP discuss

0/120/2

40

10/130/2

50

20/140/2

60

30/150/2

70

40/160/2

80

50/170/2

90

60/180/3

00

70/190/3

10

80/200/3

20

90/210/3

30

100/220/3

40

110/230/3

50747576777879808182

-92.8-92.6-92.4-92.2-92-91.8-91.6-91.4-91.2-91

Mean RSRP v.s computation zone RSRP>=-100dBm(%)

RSRP>=-100(%) Mean RSRP(dBm)

We compare 2 index in this chart, mean RSRP & percentage of RSRP >=-100dBm in computation zone, we can find the worst case in 50/170/290, 60/180/300, 70/190/310 and 80/200/320.furthermore ,it match the mean RSRP.

RSRP discuss

0/120/2

40

10/130/2

50

20/140/2

60

30/150/2

70

40/160/2

80

50/170/2

90

60/180/3

00

70/190/3

10

80/200/3

20

90/210/3

30

100/220/3

40

110/230/3

5010.6

10.8

11

11.2

11.4

11.6

-92.8-92.6-92.4-92.2-92-91.8-91.6-91.4-91.2-91

Mean RSRP v.s computation zone RSRP>=-80dBm(%)

RSRP>=-80(%) Mean RSRP(dBm)

We compare 2 index in this chart, mean RSRP & percentage of RSRP >=-80dBm in computation zone, we can find the worst case in 40/160/280, 50/170/290, 60/180/300, but it does not match the mean RSRP.

SINR discuss

0/120/2

40

10/130/2

50

20/140/2

60

30/150/2

70

40/160/2

80

50/170/2

90

60/180/3

00

70/190/3

10

80/200/3

20

90/210/3

30

100/220/3

40

110/230/3

507475767778798081

01234567

Mean SINR v.s computation zone SINR>=0dB(%)

SINR>=0(%) Mean SINR(dB)

We compare 2 index in this chart, mean SINR & percentage of SINR >=0dB in computation zone, we can find the worst case in 40/160/280, 50/170/290, 60/180/300 furthermore ,it doesn’t match the mean SINR.

0/120/2

40

10/130/2

50

20/140/2

60

30/150/2

70

40/160/2

80

50/170/2

90

60/180/3

00

70/190/3

10

80/200/3

20

90/210/3

30

100/220/3

40

110/230/3

5005

101520253035

01234567

Mean SINR v.s computation zone SINR>=10dB(%)

SINR>=10(%) Mean SINR(dB)

SINR discuss

We compare 2 index in this chart, mean SINR & percentage of SINR>=10dBm in computation zone, we can find the worst case in , 70/190/310 and 80/200/320. and match the mean SINR.

RSRP vs. SINR

0/120/2

40

10/130/2

50

20/140/2

60

30/150/2

70

40/160/2

80

50/170/2

90

60/180/3

00

70/190/3

10

80/200/3

20

90/210/3

30

100/220/3

40

110/230/3

500

1

2

3

4

5

6

7

-92.8-92.6-92.4-92.2-92-91.8-91.6-91.4-91.2-91

Mean SINR v.s Mean SINR

Mean SINR(dB) Mean RSRP(dBm)

We compare 2 index in this chart, mean RSRP & mean SINR.The worst case happen in 70/190/310 and 80/200/320.It may cause environment around the site. There is not 3D building map in this region. It will cause more mistake in prediction.

• 1. There are some difference between every 10 degrees in azimuth.

Less 2dB in RSRP,1.5dB in SINR.

• 2. There are not consistency best standard azimuth, but there are some azimuth perform not as good as the others.

• 3. Standard Azimuth in a ideal wireless network will perform the best SINR, but there are too many kind of condition have to considerate.

• 4. Good design will increase 1~2dB performance before network tuning, and we can fix and get this performance back by network tuning.

summary