L2100 LTE SFN Deactivation 14052020

L2100 LTE SFN Deactivation MPT Commercial Network

Date : 13-May-2020

1

社外秘 B

Content

1

Background

2

Site Selection

3

Hardware Software Dependency

4

Gain and Impact

5

ROI calculation

6

Implementation plan

7

Customer Queries

2

Background :Deactivate the SFN for L2100 to improve Capacity with lower Capex

Confidential

07/13/2021

• The single frequency network (SFN) feature allows multiple physical cells that work at the same frequency to be combined into one SFN cell. • The traffic volume in an SFN cell may increase after a period of time. If the PRB usage of an SFN cell exceeds 50-70% for a long time, the SFN cell can be split into common cells

L2100 Multi Sector with Existing HW&SW L2100 SFN

L2100 Multi Sector

Cell1 One Logic Cell

Cell2

 For existing sites from U2100 Multi-sector to L2100 SFN, deactivate the SFN  To get the multi sector capacity gain 50%~70% with existing HW/SW. Myanmar Joint Operation

3

Site Selection:

社外秘 B

L2100 De-activation SFN Criteria

 Overall Consideration with capacity , experience and KPI for SFN/ASFN/MS Selection. Scenario

Start Sector A PRB > 70% @ BH ?

Mode Selection Criteria

N

1

2~3 sector congestion

• LTE PRB Utilization(%) ≥ 50% @ Busy Hour ( at least 1 Sec > 70 %)

1 sector 2 congestion

No congestion

• LTE PRB Utilization(%) ≥ 70% @ Busy Hour

• LTE PRB Utilization(%) ＜ 50% @ Busy Hour

3

Y

Sector B/C PRB > 50% @ BH ? Y 655-Sites / 1653 Cells

1 De-active SFN for A & B/C

N

N

Advantag e

• Capacity gain ~70% • Experience gain ≥ 60% • Payload gain ≥ 35%

• Capacity gain ~50% • Experience gain maintain or 4~10% • Payload gain ≥ 16%

Disadvant age

Average SINR 1~2dB decreased

SINR and Other KPI maintained

• Experience gain ≥ 60% • No SINR decreased.

229-Sites / 229 Cells

2 De-active SFN for A

3 No change

SINR and Other KPI maintained

End 4

Site Selection:

Overview for SFN in current network with deactivation requirement

07/13/2021

51% Cells required SFN deactivation Summary

BH User Downlink throughput summary

SFN-PRB vs Cell Ratio

SFN-DL User Throughput vs Cell Ratio

60%

49% 43%

60%

40% 30%

40% 30% 16%

0%

9%

DL User throughput(Mbps)

PRB Utilization (%)

DL PRB Uti Range

4% 5 ( No Data)

10%

21%

4 ( >10 Mbops)

20%

3 ( < 10 mbps)

3 ( 70%)

2 (>50 % < 70 %)

8%

10%

2 ( 3~5 Mbps)

Cell Ratio (%)

20% 0%

49%

50%

1 (< 3 Mbps )

50%

Cell Ratio (%)

Confidential

Cell Ratio(%)

Number of Cell

>70%

43%

1587

>50 % < 70 %

8%

295

3~ 10 Mbps Total

Myanmar Joint Operation

Cell Ratio(%) 18.0% 32.0% 41.7% 8.4% 100%

Cells 338 602 784 158 1882

Priority P1 P2 P3 p4

5

Site Selection:

Deactivate the SFN for L2100 to improve Capacity with lower Capex

Confidential

07/13/2021

[Summary]:- Criteria to Disable SFN Cells is taken Only PRB Utilization >70% - Currently SFN Active Cells (Count is 3723) in whole Network & Out of 3723 Cells, 1882 Cells (885 Sites) are recommended to Disable SFN , based upon below 03 example cases. PRB Utilization (%) 1 ( >70%) 2 (>50 % < 70 %) 3 ( 70%

Time

14

100 90

12 80 10

70 60

8

50 6

40 30

4

20 2 10 0 00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 SFN - PDSCH utilization rate (PRB DL) SFN - DL Throughput Per UE(Mbps)

ASFN - PDSCH utilization rate (PRB DL) ASFN - DL Throughput Per UE(Mbps)

0

MS - PDSCH utilization rate (PRB DL) MS - DL Throughput Per UE(Mbps)

PRB Utilization(%)

Throughput(Mbps)

PRB > 70%, User Throughput < 3Mbps, MS can improved to >3Mbps