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Test Report

5G Network Trial at 26/28GHz band

in Hong Kong Science Park

(Temporary Permit No. T00606)

21 May 2019

1

Table of Content

1. Introduction ..................................................................................................................... 2

2. Trial Setup ........................................................................................................................ 3

2.1 Test location ............................................................................................................. 3

2.2 NR Cell Configuration ............................................................................................. 4

2.3 Test Equipment ........................................................................................................ 4

2.3.1 28GHz 5G Active Antenna Unit (AAU) ............................................................. 5

2.3.2 28GHz Test User Equipment (TUE) ................................................................... 5

2.3.3 28GHz Signal Receiver (Huawei ARU or CPE ODU) ........................................ 6

2.3.4 28GHz Customer Premises Equipment (CPE) .................................................... 6

2.4 Network Setup ......................................................................................................... 7

3. Basic Functional Test Result ........................................................................................ 10

4. Other Tests ..................................................................................................................... 28

4.1 Peak throughput with 800MHz of bandwidth ........................................................ 28

4.2 Walk Test for NR signal measurement .................................................................. 28

4.3 Penetration Loss through glass window ................................................................. 30

5. Conclusion ...................................................................................................................... 31

2

1. Introduction

On 21 March 2017, the CA promulgated its work plan for making available

additional radio spectrum for public mobile services to meet the increasing

aspirations of service users towards 2020 and beyond. The work plan has identified

a number of frequency bands, including the 3.4 – 3.6 GHz band (“3.5 GHz band”),

the 24.25 – 27.5 GHz band and the 27.5 – 28.35 GHz band (“26/28 GHz bands”),

that can be made available for reallocation to mobile services to prepare for the

launch of fifth generation mobile (“5G”) services.

China Mobile Hong Kong (“CMHK”) opened the 5G Open Lab of CMCC 5G

Innovation Center in Hong Kong on 16 March 2018. After conducted a lab test of

5G network equipment successfully, a 5G network field trial at 28GHz band with

commercial ready products was conducted at Science Park from October 2018.

Three 5G radio sites has been deployed in Science Park for a trial period from 1

October 2018 to 31 March 2019. Various tests including speed and signal

measurement was performed. Most of the trial tests were conducted by using

400MHz of bandwidth, while peak throughput measurement was done for

400MHz and 800MHz of bandwidth. This report provides details of the test

result obtained during the trial.

3

2. Trial Setup

2.1 Test location

Location: Hong Kong Science Park (HKSTP)

Testing Area : Grand Plaza and Science Park East Avenue (Phase 2 area)

5G site locations:

5G Simulation engineering table:

Site Sector Pcell PCI Scell PCI Type Latitude Longitude Bearing Tilt

5443 S1 100 101 NR 114.21 22.4283 150 20

S2 200 201 NR 114.2099 22.42835 225 20

5413

S1 20 21 NR 114.2107 22.42639 100 20

S2 20 31 NR 114.2103 22.42617 175 20

S3 40 41 NR 114.2108 22.42698 46 20

S4 10 11 NR 114.2104 22.42685 226 20

5412 S2 302 303 NR 114.2125 22.42592 340 20

S1 300 301 NR 114.2121 22.42547 265 20

4

2.2 NR Cell Configuration

Frequency Band n257

Downlink NARFCN 2074959/2078291

Test Frequency 27.6 – 28 GHz (400MHz of

bandwidth)

Downlink Bandwidth 200MHz X 2

Subcarrier Spacing(KHz) 120

Slot Assignment 4:1

Max Transmit Power 65 dBm (EIRP)

(N.B. 27.5 to 28.3 GHz (800MHz of bandwidth) is granted in trial permit.)

2.3 Test Equipment

In order to observe the high speed of 5G NR, Huawei used Test User Equipment

(TUE) to act as the UE for performing DL/UL services, and use a software tool

called “OMT” to control 4G/5G TUE and capture log.

Item Device or software Count

1 LTE OMT (V300R013C10SPC930T) 1

2 5G OMT (V200R002C00SPC712T) 1

3 5G 28Ghz TUE with 4G TUE 1

4 5G 28Ghz ARU 1

5 5G 28Ghz CPE 1

6 notebook (with Windows 7) 1

7 LAN Switch 1

8 LAN Cable (with one 10G SFP) 4 (at least 1 CAT6)

5

2.3.1 28GHz 5G Active Antenna Unit (AAU)

Item Specification

AAU model HAAU5213

Frequency（GHz） 26500~29500MHz band

Operating Bandwidth 2 x 200MHz & 4 x 200MHz

Tx/Rx Configuration 4T4R

Sweep Range H:120°, V:30°

Dimensions (H x W x D) 585 mm × 300 mm × 152 mm

Weight (kg) ~20

2.3.2 28GHz Test User Equipment (TUE)

6

Item Specification

Frequency 28 GHz

Antenna 2T4R

2.3.3 28GHz Signal Receiver (Huawei ARU or CPE ODU)

Item Specification

Frequency Band (GHz) 28GHz

Dimensions (H x W x D) 380 x 248 mm x 100 mm

Antenna 2T4R

2.3.4 28GHz Customer Premises Equipment (CPE)

Item Specification

Frequency 28 GHz

Antenna 2T2R

7

2.4 Network Setup

28GHz mmWave overall configuration diagram:

28GHz mmWave TUE setup:

8

28GHz mmWave ARU setup:

LTE eNodeB and 5G gNodeB to Core network configuration (N.B. use of a

test PLMN to conduct the 5G network field trial, separated from live network

in order to avoid any live service impact):

9

Description of basic functional test cases

Weather Test Item Subitem Test Description UE Status

DL SCG Only, DL Traffic checking

according to SCG onlyDL NR only，UDP TUE Pass

DL MCG + SCG, DL Traffic checking

according to MCG and SCG Separately下行分流，UDP TUE Pass

UL SCG Only, UL Traffic checking


UL MCG + SCG, UL Traffic checking

according to MCG and SCG Separately上行分流，UDP TUE Pass

Secondary Node Addition

Check sending "SgNB Addition

Request/SgNB Addition Request

ACK/SgNB Reconfiguration Complete "NR 辅载波添加 TUE Pass

1) SgNB Release Request sending on

MNPass

2) SgNB Release Required sending on

SNPass

Single User Peak

Throughput (DL UDP)

DL Peak throughput test of a single UE

at the Cell Center(UDP)单用户下行峰值，UDP TUE Pass

Single User Peak

Throughput (UL UDP)

UL Peak throughput test of a single UE

at the Cell Center(UDP)单用户上行峰值，UDP TUE Pass

Single User Peak

Throughput (DL UDP)



Single User Peak

Throughput (UL UDP)



Single cell UL coverage test (UE moves

from near point to far point)上行拉远 TUE Pass

Single cell DL coverage test (UE moves

from near point to far point)下行拉远 TUE Pass

NSA->LTE only TUE Pass

LTE only->NSA TUE Pass

SCG NR站内切换 SCG NR站内切换 TUE Pass

SCG NR站间切换

Separated BBU and transmission

interconnection，Option3X，SCG

change test based on intra-freq

handover in the same site

SCG NR站间切换 TUE Pass

MCG LTE站内切换 MCG LTE站内切换 TUE Pass

NSA lost

network to

LTE ability

(funcational

test)

NSA->LTE only CPE Pass

Single User Peak

Throughput (DL UDP)


at the Cell Center(UDP)单用户下行峰值，UDP CPE Pass

Single User Peak

Throughput (UL UDP)


at the Cell Center(UDP)单用户上行峰值，UDP CPE Pass

NR 辅载波释放 TUE

DC Basic Functions

Peak

Throughput

(co-site

anchor)

CoverageSingle-cell outdoor

coverage test

Secondary Node Release

Rainy Day

Mobility

(funcational

test)

Peak

Throughput

(Not co-site

anchor)

Sunny Day

Peak

Throughput

(co-site

anchor)

NSA

10

3. Basic Functional Test Result

Test number 3.1

Test items

NSA – DC Basic function

Test aim To test if TUE can DL & UL using NR only and LTE + NR (DC)

Test equipment

1. LTE TUE x 1

2. 5G TUE x 1

3. LTE OMT x 1 & 5G OMT x1

4. Notebook x 1

Test result

Set DL and UL at SCG only:

SCG only Download:

Subitem Test Description UE Status

DL SCG Only, DL Traffic checking


DL MCG + SCG, DL Traffic checking

according to MCG and SCG Separately下行分流，UDP TUE Pass

UL SCG Only, UL Traffic checking


UL MCG + SCG, UL Traffic checking

according to MCG and SCG Separately上行分流，UDP TUE Pass

DC Basic Functions

4G DL 5G DL

11

SCG only Upload:

Set upload at MCG & SCG:

MCG & SCG Upload:

4G UL 5G UL

5G UL 4G UL

12

Set Download at MCG & SCG:

MCG & SCG Download:

Test number 3.2

Test items

NSA – Secondary Node Addition & Release

Test aim To test if TUE can perform secondary node addition & release normally

Test equipment

5. LTE TUE x 1

6. 5G TUE x 1


8. Notebook x 1

Test Item Subitem Test Description UE Status

Secondary Node Addition

Check sending "SgNB Addition

Request/SgNB Addition Request

ACK/SgNB Reconfiguration Complete "NR 辅载波添加 TUE Pass

1) SgNB Release Request sending on

MNPass

2) SgNB Release Required sending on

SNPass

Secondary Node Release NR 辅载波释放 TUE

NSA

4G DL 5G DL

13

Test result

Secondary Node Addition:

From LTE eNodeB X2 trace, it contain “SGNB_ADD_REQ”,

“SGNB_ADD_REQ_ACK” and “SGNB_RECONFIG_CMP” which represents

SgnodB addition successfully.

Secondary Node Release:

From LTE eNodeB X2 trace, it contain “SGNB_REL_REQ”,

“SGNB_REL_REQ_ACK” and “UE_CONTEXT_RELEASE” which represents

SgnodB release successfully.

Test number 3.3

Test items

Peak Throughput (co-site anchor & non co-site anchor)

Test aim To test the peak DL and UL throughput of NR cell.

Test equipment

1. LTE TUE x 1

2. 5G TUE x 1


4. Notebook x 1


Single User Peak

Throughput (DL UDP)



Single User Peak

Throughput (UL UDP)



Single User Peak

Throughput (DL UDP)



Single User Peak

Throughput (UL UDP)



Peak

Throughput

(Not co-site

anchor)

Peak

Throughput

(co-site

anchor)

14

Test result

5G site 5412 S1 (400MHz, Rank 2 , non co-site anchor case)

Peak DL MAC layer throughput ~2.15Gbps

Peak UL MAC layer throughput ~ 395Mbps

5G site 5412 S2 (400MHz, Rank 2, non co-site anchor case)



DL ~ 2.46Gbps

DL ~ 2.15Gbps

UL ~ 395Mbps

15

5G site 5443 S1 (400MHz, Rank 2, co-site anchor case)

Peak DL MAC layer throughput ~2Gbps


5G site 5443 S2 (400MHz, Rank 2, co-site anchor case)



UL ~ 95Mbps

DL ~ 2Gbps

UL ~ 241Mbps

DL ~ 2.34Gbps

16

Test number 3.4

Test items

Outdoor cell coverage test

Test aim To test the coverage and throughput of NR cell

Test result

Stationary UDP / OFCA throughput and latency test result (400MHz,

Rank2)


Single cell UL coverage test (UE moves

from near point to far point)上行拉远 TUE Pass

Single cell DL coverage test (UE moves

from near point to far point)下行拉远 TUE Pass

CoverageSingle-cell outdoor

coverage test

Point cell PCI 5G site-sector 4G site beamID RSRP SINR UDP DL THP UDP UL THP OFCA DL DL THP OFCA DL UL THP OFCA Latency

P1 100 5443-S1 3446 6 -84 23 2.89 Gbps 530 Mbps 431.6 Mbps 459.6 Mbps 9.32 ms

P2 200 5443-S2 3446 1 -106 9 670 Mbps 93 Mbps 219.4 Mbps 79.6 Mbps 9.94 ms

P3 302 5412-S2 3446 27 -90 23 2.53 Gbps 470 Mbps 319.6 Mbps 296 Mbps 10.04 ms


P5 302 5412-S2 3446 26 -108 5 870 Mbps 10 Mbps 265 Mbps 8.92 Mbps 11.4 ms

P6 200 5443-S2 3446 16 -119 -10

NA (due to 5G too

weak to camp on)

NA (due to 5G too

weak to camp on)

NA (due to 5G too

weak to camp on)

NA (due to 5G too

weak to camp on)

NA (due to 5G too

weak to camp on)

P7 300 5412-S1 3446 16 -103 9 994 Mbps 82 Mbps 311 Mbps 68.8 Mbps 10.04 ms


UL ~ 433Mbps

17

3 NR cell RSRP comparison (different penetration loss)

UDP drive test route

Point cell PCI 5G site-sector RSRP Distance

P1 100 5443-S1 -84 ~80m

P2 40 5413-S1 -104 ~80m

P3 302 5412-S2 -100 ~90m

18

TUE UDP drive test SINR vs RSRP

TUE UDP DL throughput vs SINR

Test number 3.5

Test items

Mobility (functional test)

19

Test aim To test the mobility of NR cell

Test equipment

1. LTE TUE x 1

2. 5G TUE x 1


4. Notebook x 1

Test result

Intra-gNodeB Handover signal flow:

5G 5443 S2 handover to S1 message:

TUE OMT message:

20

Inter-gNodeB Handover signal flow:

5G 5443 S1 handover to 5412 S2 message:

21

TUE OMT message:

NSA -> LTE only HO:

5G cell released at 18:33, physical layer DL throughput dropped to 0 Mbps.

22

LTE cell keep activating at 18:33 and physical layer DL throughput increased to about

20Mbps.

Test number 3.6

Test items

CPE NSA lost network to LTE ability (functional test)

Test aim To test the inter-RAT ability of CPE

Test equipment

1. CPE x1

2. Test mobile x 1

Test result

Active mode:

17:23:43 Enter “DEA NR CELL”

17:23:43 SCNB_RELEASE_REQ

17:24:11 Enter” ACT NR CELL”

17:24:32 SCNB_ADD_REQ


NSA lost

network to

LTE ability

(funcational

test)

NSA->LTE only CPE Pass

23

Test mobile can still perform download using 4G when 5G cell down.

Idle mode:

17:30:01 Enter “DEA NR CELL”

17:30:01 SCNB_RELEASE_REQ

17:30:10 Enter” ACT NR CELL”

17:30:24 SCNB_ADD_REQ

24

Test number 3.7

Test items

Rainy day and Sunny day CPE Peak DL and UL throughput

Test aim To compare CPE peak DL and UL throughput in rainy day vs sunny day

Test equipment

1. 5G mm wave CPE x1

2. CPE OMT x1

3. Notebook x 1

4. Test mobile phone x1

Test result

Test location:

25

NR RSRP and SINR

NR RSRP NR SINR

Rainy day -81 dBm 28

Sunny Day -77 dBm 31

Comparing rainy day and sunny day, there was about 4dBm difference in RSRP,

while SINR difference was about 3. However, the result may vary, depending on the

amount of rain during testing period.

Rainy day:

Sunny day:

26

OMT Log:

Rainy day:

Sunny day:

27

OFCA test result

Rainy day:

Sunny day:

Overall Speed test Summary:

Download

(Mbps)

Upload

(Mbps)

Network

Latency (ms)

Avg

Download

(Mbps)

Avg Upload

(Mbps)

Rainy Day

425 115 16

430.67 124.33 432 129 8

435 129 11

Sunny day

442 130 14

456.33 130.33 452 131 14

475 130 13

CPE DL and UL throughput in sunny day were about 6% and 4.8% higher than

rainy day respectively. However, the result may vary, depending on the amount of

rain during testing period.

28

4. Other Tests

4.1 Peak throughput with 800MHz of bandwidth

The peak data throughput reached 9Gbps could be achieved with 800MHz of

bandwidth and 4 data streams (Rank 4) in this field trial. The throughput is lower than

the one achieved during lab trial (14.3Gbps) done before, which is in an indoor

optimal environment with lesser interference.

4.2 Walk Test for NR signal measurement

A walk test has been conducted with 5G NR scanner along Science Park Road East

and West, for signal measurement from the three installed 5G sites.

Site Sector Pcell PCI Scell PCI Type Latitude Longitude Bearing Tilt

5443 S1 100 101 NR 114.21 22.4283 150 20

S2 200 201 NR 114.2099 22.42835 225 20

5413

S1 20 21 NR 114.2107 22.42639 100 20

S2 20 31 NR 114.2103 22.42617 175 20

S3 40 41 NR 114.2108 22.42698 46 20

S4 10 11 NR 114.2104 22.42685 226 20

5412 S2 302 303 NR 114.2125 22.42592 340 20

S1 300 301 NR 114.2121 22.42547 265 20

29

With 5G mmWave AAU installed at rooftop (Building 20E) transmitting at maximum

power, the Line Of Sight (LOS) coverage can reach 160-200 meters. Also, signal

coverage is observed in some NLOS spots through reflection from buildings.

30

4.3 Penetration Loss through glass window

Signal measurement inside and outside a building separated by glass window has been

conducted. It shows that the signal penetration loss of mmWave through glass

window of a building at Science Park is about 20dBm. Of course, the penetration loss

will vary depending on the material and thickness of the window.

31

5. Conclusion

The 5G trial network at 28GHz (mmWave) with commercial ready product is

successfully deployed at Science Park. Three 5G radio base station sites has been

installed at the rooftop of buildings at Science Park. All basic functional tests

including data throughput, dual connectivity, mobility and coverage under 5G

network environment are verified satisfactorily.

The downlink throughput is high with 5G network at 28GHz. The peak downlink

speed can reach 2.4Gbps (2 streams) & 5.1Gbps (4 streams) with 400MHz of

bandwidth, and nearly 9Gbps (4 streams) with 800MHz of bandwidth in outdoor

environment. The network latency is about 10-15ms, which is lower than the

existing 4G network (30-40ms).

The 5G NR radio signal propagation loss and penetration loss of mmWave

spectrum is high. With the rooftop sites transmitting at maximum power, the

effective cell coverage is about 160-200 meters LOS in outdoor environment.

The radio coverage through reflection from building is observed. The signal

penetration loss through typical glass window at Science Park is about 20dBm.

Besides functional tests, end-to-end 5G network connectivity supporting fast

internet browsing experience, 4K CCTV HD video transmission, VR360 camera

video transmission were tested with good performance during the trial.

28GHz (mmWave) is suitable for hot spot deployment of 5G network, in order to

support applications with high data speed and low latency.

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