5G RAN
Multi-Sector Evolution Feature e Par Parameter ameter Description Descript ion Featur Issue
Draft A
Date
2021-12-30
HUAWEI TECHNOLOGIES CO., LTD.
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Issue Draft A (2021-12-30)
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Contents
Contents 1 Change History... History.............. ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................1 ........1 1.1 5G RAN6.1 RAN6.1 Draft A (2021-12-3 (2021-12-30)........ 0)................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ........... 1
2 About This Document.. Document............. ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................2 ........2 2.1 General Statements..... Statements................ ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ................... ........ 2 2.2 Diferences Diferences Between NR FDD and NR TDD....... TDD................. ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... .............. .... 2 2.3 Diferences Diferences Between NSA and SA......... SA................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... .................... .......... 3 2.4 Diferenc Diferences es Between High Frequency Bands and Low Frequency Bands........................... Bands...................................... ..................... ..................... ............. 3
3 Overview......... Overview.................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ............. ..4 4 4 Multi-Sector Multi-Sector Evolution Evolution........... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ................... ........ 5 4.1 Principles.......... Principles..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ............. ... 5 4.2 Network Network
Analysis.....................................................................................................................................................................5
4.2.1 Benet Benetss.............. ............................ ............................ ............................ ............................ ............................ ............................ ............................. ............................. ............................ ............................ ............................ ......................... ........... 6 4.2.2 Impacts........... Impacts..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ............... 6 4.3 Site Survey.......... Survey.................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ........... 6 4.4 Requirements......... Requirements................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ................. ...... 8 4.4.1 Licenses....... Licenses.................. ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ............... ..... 9 4.4.2 NR Scenarios..........................................................................................................................................................................9 4.4.2.1 2T6S Hardwar Hardware........... e..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ............... 10 4.4.2.1.1 Boards........... Boards......................... ............................ ............................ ............................ ............................. ............................. ............................ ............................ ............................ ............................ ............................ ..................... ....... 10 4.4.2.1.2 CPRI CPRI Bandwidths.... Bandwidths............... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ............. ... 10 4.4.2.1.3 RF Modules...... Modules................ ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ........... 10 4.4.2.2 4T6S
Hardware........... Hardwar e..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ............... 11
4.4.2.2.1 Boards........... Boards......................... ............................ ............................ ............................ ............................. ............................. ............................ ............................ ............................ ............................ ............................ ..................... ....... 11 4.4.2.2.2 CPRI CPRI Bandwidths.... Bandwidths............... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ............. ... 12 4.4.2.2.3 RF Modules...... Modules................ ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ........... 12 4.4.3 LN Scenario..... Scenario................ ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ................. ....... 13 4.4.3.1 2T6S
Hardware........... Hardwar e..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ............... 13
4.4.3.1.1 Boards........... Boards......................... ............................ ............................ ............................ ............................. ............................. ............................ ............................ ............................ ............................ ............................ ..................... ....... 13 4.4.3.1.2 CPRI Bandwidths.... Bandwidths............... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ............. ... 13 4.4.3.1.3 RF Modules...... Modules................ ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ........... 14 4.4.3.2 4T6S Hardwar Hardware........... e..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ............... 14 4.4.3.2.1 Boards...... Boards.................... ............................. ............................. ............................ ............................ ............................ ............................ ............................ ............................ ............................ ............................ .......................... ............ 14 Issue Draft A (2021-12-30)
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Contents
Bandwidths............... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ............. ... 14 4.4.3.2.2 CPRI Bandwidths.... 4.4.3.2.3 RF Modules...... Modules................. ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ........... 15 4.4.4 GLN/ULN Scenarios..... Scenarios................ ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ............. ... 15 4.4.4.1 2T6S Hardwar Hardware........... e..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ............... 15 4.4.4.1.1 Boards...... Boards.................... ............................. ............................. ............................ ............................ ............................ ............................ ............................ ............................ ............................ ............................ .......................... ............ 15 4.4.4.1.2 CPRI Bandwidths.... Bandwidths............... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ............. ... 15 4.4.4.1.3 RF Modules...... Modules................. ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ........... 15 4.4.4.2 4T6S Hardwar Hardware........... e..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ............... 17 4.4.4.2.1 Boards...... Boards.................... ............................. ............................. ............................ ............................ ............................ ............................ ............................ ............................ ............................ ............................ .......................... ............ 18 4.4.4.2.2 CPRI Bandwidths.... Bandwidths............... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ............. ... 18 4.4.4.2.3 RF Modules...... Modules................. ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ........... 18 4.4.5 Network Planning.... Planning............... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ................. ...... 21 4.4.5.1 Cell ID Planning Principles..... Principles................ ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... .................. ....... 21 4.4.5.2 Neighboring Cell Planning Principles...... Principles................ ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... .................. ........21 21 4.4.5.3 PCI Planning Principles..... Principles................ ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... .............. ....22 22 4.4.6 Others..... Others................... ............................ ............................. ............................. ............................ ............................ ............................ ............................ ............................ ............................ ............................ ............................ .................... ...... 22 4.5 Operation and Maintenance.... Maintenance............... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ............ 22 4.5.1 Using MML Commands. Commands............... ............................ ............................ ............................ ............................ ............................. ............................. ............................ ............................ ............................ ................... ..... 22 4.5.2 Using the MAE-Deploymen MAE-Deployment......... t.................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... .............. ... 23 4.5.3 Activation Verication Verication........... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................... ............. ... 23 4.5.4 Network Monitoring.... Monitoring.............. ..................... ..................... ..................... ..................... ..................... ..................... .................... ..................... ..................... ..................... ..................... ..................... ..................... ............. ...23 23
5 Glossary. Glossary............ ....................... ....................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ...................... ................... ........ 24 6 Reference Documents...........................................................................................................25
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5G RAN Multi-Sector Evolution Feature Parameter Description
1 Change History
1
Change History
This chapter describes changes not included in the "Parameters", "Counters", "Glossary", and "Reference Documents" chapters. These changes include: ●
Technical ch changes Changes in functions and their corresponding parameters
●
Editorial changes Improvements or revisions to the documentation
1.1 5G RAN6.1 Draft A (2021-12-30) This issue is the rst rst release. release.
Issue Draft A (2021-12-30)
Copyright © Huawei Technologies Co., Ltd.
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5G RAN Multi-Sector Evolution Feature Parameter Description
2 About This Document
2
About This Document
2.1 General Statements Purpose Feature Parameter Description documents are intended to acquaint readers with: ● The tech technic nical al princ principl iples es of featu feature ress and their their rela related ted p par arame ameter terss ●
The scenar scenarios ios where where these these featu features res ar are e used used,, the the benets benets they they provide, and the impact they have on networks and functions
●
Requireme Requirements nts of the the operat operating ing environmen environmentt that that must must be be met bef before ore feature feature activation
●
Parameter conguration conguration required required for feature activation, verication verication of of feature activation, and monitoring of feature performance NOT NO T
This document only provides p rovides guidance for feature activation. Feature deployment and feature gains depend on the specics specics of of the network scenario where the feature is deployed. To achieve optimal gains, contact Huawei professional service engineers.
Software Interfaces Any parameters, alarms, counters, or managed objects (MOs) described in Feature Parameter Description documents apply only to the corresponding software release. For future software releases, refer to the corresponding updated product documentation.
2.2
Diferences Between Function Name Multi-sector evolution
NR FDD and NR TDD
Diference
Chapter/Section
Supported only in NR FDD
4 Multi-Sector Evolution
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5G RAN Multi-Sector Evolution Feature Parameter Description
2.3
2 About This Document
Diferences Between Function Name
Multi-sector
NSA and SA
Diference
Chapter/Section
None
4 Multi-Sector Evolution
evolution
2.4 Diferences Between High Frequency Bands and Low Frequency Bands This document refers to frequency bands belonging to FR1 (410–7125 MHz) as low frequency bands, and those belonging to FR2 (24250–52600 MHz) as high frequency bands. For details about FR1 and FR2, see section 5.1 "General" in 3GPP TS 38.104 V15.5.0. Function Name Multi-sector evolution
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Diference
Chapter/Section
Supported only in low frequency bands
4 Multi-Sector Evolution
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5G RAN Multi-Sector Evolution Feature Parameter Description
3 Overview
3
Overview
Background With the development of MBB services, servi ces, LTE LTE FDD multi-sector solutions are introduced to improve capacity without adding carriers or sites. During the evolution from LTE LTE FDD to NR FDD, LTE LTE FDD multi-sector solutions evolve to NR FDD multi-sector solutions through software upgrade without changing network hardware connections.
Application Scenarios NR FDD multi-sector solutions apply to the same scenarios as LTE FDD multisector solutions, as the former is evolved from the latter latter.. The solutions are mainly used in densely populated urban areas. The application scenarios include capacity expansion in urban areas and xMbps improvement in urban areas. ●
Ca Capa paci city ty exp expan ansi sion on in ur urba ban n ar areas eas In densely populated urban areas, a large number of UEs access the network, causing network congestion. As a result, user experience is poor and operators' revenues are afected. afected. In In this case, multi-sector reconstruction is required on congested sites to improve capacity.
●
xMbp xMbpss iimp mpro rove veme ment nt in ur urba ban n ar areas eas In densely populated urban areas, there are a large number of UEs but insucient air insucient air interface resources. As a result, user experience is poor poor.. In this case, multi-sector solutions are required to add air interface resources and increase UE throughput.
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5G RAN Multi-Sector Evolution Feature Parameter Description
4 Multi-Sector Evolution
4
Multi-Sector Evolution
4.1 Principles Multi-sector solutions include 2T6S and 4T6S. 2T6S is used to split the original sectors of a base station into four to six 2T sectors, and 4T6S is used to split the original sectors of a base station into four to six 4T sectors. Figure 4-1 provides 4-1 provides an example, where the original sectors are split into six sectors. Figure 4-1 Multi-sector 4-1 Multi-sector split
Based on the RAT and frequency band, multi-sector solutions can be deployed in the following scenarios. For details about deployment requirements, see 4.4.2 NR Scenarios,, 4.4.3 LN Scenario Scenarios Scenario,, and 4.4.4 GLN/ULN Scenarios Scenarios.. ●
NR scena scenario rios: s: On Only ly NR FDD is is involv involved ed in mult multi-se i-sector ctor recon reconstr structi uction. on.
●
LN scena scenario rios: s: L LTE TE is impl impleme emente nted d on some some ca carri rriers ers of of a mul multi-m ti-mode ode R RF F module while NR is implemented on the other carriers.
●
GLN/UL GLN/ULN N scenar scenarios ios:: Both GSM GSM and and LTE/ LTE/NR NR are are impleme implemente nted d on a multi-m multi-mode ode RF module, or both UMTS and LTE/NR are implemented on a multi-mode RF module.
4.2 Network Analysis Issue Draft A (2021-12-30)
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5G RAN Multi-Sector Evolution Feature Parameter Description
4.2.1
4 Multi-Sector Evolution
Benets Multi-sector solutions increase the user-perceived user-perceived rate and spectral eciency. eciency. T To o achieve the best benets benets of of multi-sector solutions, adhere to the following principles when selecting a site: ●
The aver average age phys physical ical reso resour urce ce block block (PRB) (PRB) usag usage e in busy busy hours hours is grea greater ter than than or equal to 70%, and the capacity expansion requirements requirements of customers are met.
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UEs in in the the new over overlap lappin ping g area area after after the the split split acco account unt for for no more more than than 20% of all UEs in the entire area.
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UEs are are even evenly ly distr distribu ibuted ted in in left left and righ rightt beams. beams. UEs UEs in the the left left or right right beam account for 30% to 70% of all UEs.
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The diference diference between between the to-be-split sector azimuth and its adjacent sector azimuth is greater than or equal to 90 degrees.
●
High-sp High-speed eed ra railw ilway ay and and highw highway ay scena scenario rioss sh shoul ould d be avoi avoided ded..
In multi-carrier co-antenna scenarios, preferentially preferentially consider whether the primary carrier (which carries main services, such as the 1800 MHz carrier) meets the deployment requirements and then consider other carriers (such as the 2100 2 100 MHz carrier). If all carriers c arriers meet the requirements, multi-sector solutions can be used. If a carrier does not meet the requirements, the expected benets benets may may not be achieved. 4T6S ofers ofers the the gains of 4T4R 4 T4R compared with 2T6S. Therefore, 4T6S is recommended and preferred preferred for customers with high rate and capacit capacity y requirements. Assuming that one sector is split into two sectors, compare the one pre-split sector and the two post-split sectors for gain analysis. For details about the gains provided by multi-sector solutions in diferent diferent scenarios, scenarios, contact Huawei to evaluate the gains based on actual network conditions.
4.2.2 Impacts If the single-channel power after the reconstruction is the same as that before the reconstruction, network KPIs remain stable and the number of users increases slightly.
4.3 Site Survey Site survey for multi-sector deployment is similar to common site survey, survey, including hardware equipment survey and RF parameter planning. ●
Hardw Hardware are equi equipme pment nt survey survey invol involves ves the the baseban baseband d proces processin sing g unit (B (BBP) BP) model, RF module model, antenna model, antenna connection, and feeder connection. In multi-sector deployment, check whether sucient sucient space space is reserved between the multi-beam antenna and the adjacent antennas to prevent obstacles and whether the bearing capacity of the pole can meet the requirements.
●
RF parame parameter terss that requ require ire plan plannin ning g include include anten antenna na locatio location, n, longit longitude ude,, latitude, model, azimuth, mechanical downtilt angle, electrical downtilt angle, and height.
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Photographing Photograph ing Method To ensure that the antenna azimuth and downtilt angle are consistent before and after the reconstruction, take photos during site survey. In addition, you are advised to take photos of the coverage area for future problem analysis. The following describes how to take photos. ●
Azim Azimu uth pho hoto togr grap aphi hing ng Use an azimuth test instrument i nstrument to measure the azimuth. It is recommended that the instrument be about 20 cm apart from the antenna and be vertical to the antenna backplane to avoid interference to the pointer pointer.. In this case, the data displayed on the indicator is the antenna azimuth.
●
Mech Mechan anica icall down downtil tiltt ang angle le p pho hoto togr grap aphi hing ng Use a downtilt angle test instrument to measure the mechanical downtilt angle. Ensure that the instrument is attached to the antenna backplane. In this case, the data displayed on the indicator is the antenna downtilt angle or its supplementary angle.
●
Elec Electr trica icall down downti tilt lt ang angle le phot photog ogrraphi aphing ng In remote electrical tilt (RET) scenarios, you can query the electrical downtilt angle from the base station congurations. congurations. In In non-RET scenarios, you need to take photos and record the electrical downtilt angle on site.
●
Surr Surrou ound ndin ing g en envi viro ronm nmen entt phot photog ogra raph phin ing g You are advised to take photos every 30°. Take photos of the coverage area from the base station side, with some antennas included for future check.
RF Engineering Parameter Record Table After the site survey is i s complete, output the RF engineering parameter record table, which includes the following contents:
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Site name
●
Site ID
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Site type
●
Si Site te addr addres esss or or con conta tact ct pe pers rson on
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Type of of the build building ing wher where e the site site is loca located ted (suc (such h as gover governme nment nt agenc agency y, private house, or commercial building)
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Altern Alternativ ative e numb number er of of the the site site (for (for exampl example, e, A, A, B, B, or C)
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Type of of the clus cluster ter to to which which the the site site belon belongs gs (such (such as as dense dense urba urban n area area or urban area)
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Lo Long ngit itud ude e and and lati latitu tude de of th the e sit site e
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Typ ype e of of th the to tower wer or pole ole
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Heig Height ht of th the e tow tower er or po polle
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Heig Height ht of of the the buil buildi ding ng w whe here re th the e site site iiss loca locate ted d
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Sector information ion
●
Sector name
●
Antenn Antenna a inst install allatio ation n mode mode (tower (tower-- or or p pole ole-mo -mount unted) ed)
●
Height Height of the the anten antenna na (= Heig Height ht of tthe he build building ing + Heig Height ht of tthe he tower tower or or pole) Copyright © Huawei Technologies Co., Ltd.
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5G RAN Multi-Sector Evolution Feature Parameter Description
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Azimuth
●
Antenna gain
●
Downtilt an angle
4 Multi-Sector Evolution
4.4 Requirem Requirements ents The principles for deploying multi-sector solutions are as follows: ●
Modu Module less are are re reus used ed as much much as poss possib ible le..
●
Multipl Multiple e antenn antennas as are are integr integrate ated d togeth together er as much much as as possib possible. le.
●
Fe Feat atur ures es of th the e lliv ive e netw networ ork ka are re no nott afected.
●
4T4R RRUs RRUs and and broad broadban band d RRUs RRUs are are pref preferr erred, ed, and and ex exist isting ing 4T 4T RRUs RRUs can be be reused.
Based on the preceding principles, specic specic solutions solutions can be determined. For LTE/NR, 4T6S is recommended. For UMTS, 2T6S or the multi-RRU cell solution can be used. For GSM, the multi-site cell solution is preferred and the 2T4R solution can be used in some scenarios. Table 4-1 Recommended 4-1 Recommended multi-sector solutions Frequency Band
RAT
Before Reconstruction
GLN1800
GS M
Three sectors
After Reconstruction Solution priorities: multi-site cell solution > 2T4R solution > 6sector solution ● If th the e fea featu turres or or functions that are mutually exclusive with the multi-site cell solution of GSM cannot be disabled, use the 2T4R solution. ● If th the e Con Conce cent ntri ricc Cell function of GSM is enabled, use the 2T4R solution.
Issue Draft A (2021-12-30)
LTE
Three 2T2R or 4T4R sectors
Six 4T4R sectors
LTE
Six 2T2R sectors
Six 4T4R sectors
NR
Three 2T2R or 4T4R sectors
Six 4T4R sectors
NR
Six 2T2R sectors
Six 4T4R sectors
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5G RAN Multi-Sector Evolution Feature Parameter Description
4 Multi-Sector Evolution
Frequency Band
RAT
Before Reconstruction
ULN2100
UMTS
Three sectors
After Reconstruction Three sectors (multiRRU cells) in UL nonCloudAIR scenarios Six sectors in UL CloudAIR scenarios
LN2600
Six sectors
Six sectors
LTE
Three 2T2R or 4T4R sectors
Six 4T4R sectors
LTE
Six 2T2R sectors
Six 4T4R sectors
NR
Three 2T2R or 4T4R sectors
Six 4T4R sectors
NR
Six 2T2R sectors
Six 4T4R sectors
LTE
Three 2T2R or 4T4R sectors
Six 4T4R sectors
NR
Three 2T2R or 4T4R sectors
Six 4T4R sectors
This document describes multi-sector solutions on the NR side. For the solutions on the LTE side, see eRAN Multi-Sector Solutions (FDD) . For the solutions on the GSM side, see GBSS GSM Multi-Sector Solution Guide . For the solutions on the UMTS side, see RAN UMTS Multi-Sector Solution Guide .
4.4.1 Licenses The following are NR feature license requirements. Feature ID
Feature Name
Model
Sales Unit
FOFD-010020
SU-MIMO Multiple Layers
NR0S0PREUM00
p er C el l
For GSM feature license requirements, see GBSS Multi-site Cell , Transmit Diversity Diversit y , and Four Four-Way -Way Receive Diversity Diversit y . For UMTS feature license requirements, see RAN Multiple RRUs in One Cell . For LTE feature license requirements, see eRAN Multi- Sector Solutions (FDD) .
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5G RAN Multi-Sector Evolution Feature Parameter Description
4 Multi-Sector Evolution
4.4.2.1 2T6S Hardwar Hardware e 4.4.2.1.1 Boards 2T6S has no restriction on BBPs. For details about boards, see 3900 & 5900 Series Base Station Product Documentation .
4.4.2.1.2 CPRI Bandwidths When a CPRI interface supports multiple RATs or multiple frequencies, its CPRI bandwidth is the sum of the CPRI bandwidths of all cells. If the CPRI bandwidth requirements listed below are not met on the live network, network , the CPRI compression function can be used. For details about CPRI compression, see CPRI Compression . Table 4-2 CPRI 4-2 CPRI bandwidth requirements Cell Bandwidth
MIMO Mode
CPRI Bandwidth Requirement
40 MHz
Downlink 2x2 MIMO
4.9 Gbit/s
40 MHz
Downlink 4x2 MIMO
9.8 Gbit/s
40 MHz
Downlink 4x4 MIMO
9.8 Gbit/s
30 MHz
Downlink 2x2 MIMO
4.9 Gbit/s
30 MHz
Downlink 4x2 MIMO
9.8 Gbit/s
30 MHz
Downlink 4x4 MIMO
9.8 Gbit/s
20 MHz
Downlink 2x2 MIMO
2.5 Gbit/s
20 MHz
Downlink 4x2 MIMO
4.9 Gbit/s
20 MHz
Downlink 4x4 MIMO
4.9 Gbit/s
15 MHz
Downlink 2x2 MIMO
2.5 Gbit/s
15 MHz
Downlink 4x2 MIMO
4.9 Gbit/s
15 MHz
Downlink 4x4 MIMO
4.9 Gbit/s
10 MHz
Downlink 2x2 MIMO
1.25 Gbit/s
10 MHz
Downlink 4x2 MIMO
2.5 Gbit/s
10 MHz
Downlink 4x4 MIMO
2.5 Gbit/s
4.4.2.1.3 RF Modules 4T4R or 2T2R RRUs can be selected for 2T6S. During deployment, replace the original 65° antenna with a 4-port multi-beam antenna use hardware one 4T4R connections. RRU or two 2T2R RRUs. Figure 4-2 4-2 and and Figure 4-3 show theand typical Issue Draft A (2021-12-30)
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Figure 4-2 4T4R 4-2 4T4R hardware hardware connections
Figure 4-3 2T2R 4-3 2T2R hardware hardware connections
4.4.2.2 4T6S Hardwar Hardware e 4.4.2.2.1 Boards BBPs must support downlink 4x2 MIMO or downlink 4x4 MIMO. For details about BBPs, see 3900 & 5900 Series Base Station Product Documentation .
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4.4.2.2.2 CPRI Bandwidths The CPRI bandwidth required by downlink 4x2 or 4x4 MIMO is about twice that required by downlink 2x2 MIMO in the same CPRI networking. Assume that the single-carrier bandwidth of NR is 20 MHz in the CPRI cascading networking. Then, the CPRI bandwidth required by downlink 4x2 or 4x4 MIMO is 4.9 Gbit/s while that required by downlink 2x2 MIMO is 2.5 2. 5 Gbit/s. When two RRUs are combined for use , the CPRI ports can be deployed in the star topology or cascading networking. The CPRI bandwidth in the star topology is half of that in the cascading networking. The star topology may lead to crossconnections. Therefore, the CPRI cascading networking is recommended. If the CPRI bandwidth requirements listed in Table 4-2 are 4-2 are not met on the live network, the CPRI compression function can be used. For details about CPRI compression, see CPRI Compression . NOT NO T
For combined RRUs, the ber ber length length diference diference between between each RRU and the BBU must not exceed 100 m.
4.4.2.2.3 RF Modules Integrated or combined RRUs can be selected for 4T6S. 4T6 S. Integrated 4T4R RRUs are recommended. The four jumpers connecting the RRU and the physical phy sical antenna should be of the same length. Sequential connection is recommended. The feeder length diference diference is is less than 1 m. The feeder loss diference diference is is less than 1 dB. During deployment, replace the original 65° antenna with an 8-port multi-beam antenna and use two 4T4R RRUs or four 2T2R RRUs. 4-4 shows shows the hardware connections when two 4T4R RRUs are deployed. Figure 4-4 Figure 4-4 Integrated 4-4 Integrated RRU hardware connections
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4-5 shows the hardware connections when four 2T2R RRUs are deployed. Figure 4-5 shows Figure 4-5 Combined 4-5 Combined RRU hardware hardware connections
4.4.3 LN Scenario Requirements in LN scenarios are similar to those in i n NR scenarios. In addition, LTE carriers can be converted into NR carriers; in this case, requirements are the same as those in NR scenarios. Multi-RAT interaction policies in LN scenarios after the reconstruction are the same as those in LTE scenarios before the reconstruction.
4.4.3.1 2T6S Hardwar Hardware e 4.4.3.1.1 Boards 2T6S has no restriction on BBPs. For details about boards, see 3900 & 5900 Series Base Station Product Documentation .
4.4.3.1.2 CPRI Bandwidths CPRI bandwidth requirements in LN scenarios are the same as those in i n LTE LTE or NR scenarios. non-co-AxC scenarios, CPRIscenarios, bandwidths L LTE TECPRI and bandwidth NR carriers of need to beIncalculated separately separately. . In the co-AxC onlyofthe Issue Draft A (2021-12-30)
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the RAT with a larger bandwidth needs to be calculated. Here, AxC is short for antenna-carrier. The CPRI bandwidth required by downlink 4x2 or 4x4 MIMO is about twice that required by downlink 2x2 MIMO in the same CPRI networking. Assume that the single-carrier bandwidth of NR is 20 MHz in the CPRI cascading networking. Then, the CPRI bandwidth required by downlink 4x2 or 4x4 MIMO is 4.9 Gbit/s while that required by downlink 2x2 MIMO is 2.5 2. 5 Gbit/s. When two RRUs are combined for use, the CPRI ports ca can n be deplo yed in the star topology or cascading networking. The CPRI bandwidth in the star topology is half of that in the cascading networking. The star topology may lead to crossconnections. Therefore, the CPRI cascading networking is recommended. If the CPRI bandwidth requirements listed in Table 4-2 are 4-2 are not met on the live network, the CPRI compression function can be used. For details about CPRI compression, see CPRI Compression . NOT NO T
For combined RRUs, the ber ber length length diference diference between between each RRU and the BBU must not exceed 100 m.
4.4.3.1.3 RF Modules RF modules must meet the requirements in 4.4.2.1.3 RF Modules Modules.. In addition, RF modules must support LTE and NR concurrency.
4.4.3.2 4T6S Hardware 4.4.3.2.1 Boards BBPs must support downlink 4x2 or 4x4 MIMO. For details about boards, see 3900 & 5900 Series Base Station Product Documentation .
4.4.3.2.2 CPRI Bandwidths CPRI bandwidth requirements in LN scenarios are the same same as those in LTE or NR or NR scenarios. non-co-AxC scenarios, CPRIscenarios, bandwidths L LTE TECPRI and bandwidth NR carriers of need to beIncalculated separately separately. . In the co-AxC onlyofthe the RAT with a larger bandwidth needs to be calculated. The CPRI bandwidth required by downlink 4x2 or 4x4 MIMO is about twice that required by downlink 2x2 MIMO in the same CPRI networking. Assume that the single-carrier bandwidth of NR is 20 MHz in the CPRI cascading networking. Then, the CPRI bandwidth required by downlink 4x2 or 4x4 MIMO is 4.9 Gbit/s while that required by downlink 2x2 MIMO is 2.5 2. 5 Gbit/s. When two RRUs are combined for use, the CPRI ports ca can n be deplo yed in the star topology or cascading networking. The CPRI bandwidth in the star topology is half of that in the cascading networking. The star topology may lead to crossconnections. Therefore, the CPRI cascading networking is recommended. If the CPRI bandwidth requirements listed in Table 4-2 are 4-2 are not met on the live network, the CPRI compression function can be used. For details about CPRI compression, see CPRI Compression . Issue Draft A (2021-12-30)
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NOT NO T
For combined RRUs, the ber ber length length diference diference between between each RRU and the BBU must not exceed 100 m.
4.4.3.2.3 RF Modules Modules.. In addition, RF RF modules must meet the requirements in 4.4.2.1.3 RF Modules modules must support LTE and NR concurrency.
4.4.4 GLN/ULN Scenarios In GLN scenarios, if the multi-site cell solution is used for GSM, the features and functions that are mutually exclusive with this solution must be disabled on the GSM side. For details about the about the mutually exclusive exclusive features and functions, see GBSS Multi-site Cell . In ULN CloudAIR scenarios, UMTS does not support the multi-RRU cell solution but support only 2T6S. In ULN scenarios, sector split (if required) must be performed for all of LTE, LTE, UMTS, and NR, but cannot be performed only for some of them. In GLN/ULN scenarios, multi-RAT interaction policies after the reconstruction are the same as those before the reconstruction.
4.4.4.1 2T6S Hardwar Hardware e The following describes the reconstruction solutions recommended for 2T6S. Scenario
Antenna Reconstruc tion
RRU Reconstruc tion
Reconstruction Solution for Each RAT
GLN1800
Replace the original 65° antenna with a 4port multi-
Two broadband SDR 2T2R RRUs or one
● NR: 2T6S
beam antenna.
broadband SDR 4T4R RRU
● GSM GSM:: multi-s multi-site ite cell cell solut solution ion (usin (using g two 2T2R RRUs) or 2T4R solution (using one 4T4R RRU)
ULN2100
● LTE: 2T 2T6S ● UMT UMTS: S: 2T6S or multi-R multi-RRU RU cel celll solution
4.4.4.1.1 Boards For details, see 4.4.2.1.1 Boards Boards..
4.4.4.1.2 CPRI Bandwidths Bandwidths.. For details, see 4.4.2.1.2 CPRI Bandwidths
4.4.4.1.3 RF Modules Two SDR 2T2R RRUs or one SDR 4T4R RRU can be selected selec ted for 2T6S. Issue Draft A (2021-12-30)
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4-6 shows the typical hardware Figure 4-6 shows hardware connections when two SDR 2T2R RRUs are deployed. Figure 4-6 2T2R 4-6 2T2R hardware hardware connections
NOT NO T
In this deployment mode, the multi-site cell solution is recommended for GSM and the 2T4R solution cannot be used.
4-7 shows shows the typical hardware hardware connections when one SDR 4T4R RRU is Figure 4-7 deployed.
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Figure 4-7 4T4R 4-7 4T4R hardware hardware connections
NOT NO T
In this deployment mode, only the 2T4R solution can be used for GSM.
4.4.4.2 4T6S Hardwar Hardware e The following describes the reconstruction solutions recommended for 4T6S. Scenario
Antenna Reconstruc tion
RRU Reconstruc tion
Reconstruction Solution for Each RAT
GLN1800
Replace the original 65° antenna with an 8port multibeam antenna.
Two broadband SDR 4T4R RRUs (recommen ded) or four broadband SDR 2T2R RRUs
● NR: 4T6S
ULN2100
● LTE: 4T 4T6S ● UMT UMTS: S: 2T6S or multi-R multi-RRU RU cel celll solution ● GSM GSM:: multi-s multi-site ite cell cell solut solution ion (usin (using g two 4T4R RRUs or four 2T2R RRUs) or 2T4R solution (using two 4T4R RRUs)
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4.4.4.2.1 Boards For details, see 4.4.2.2.1 Boards Boards..
4.4.4.2.2 CPRI Bandwidths For details, see 4.4.2.2.2 CPRI Bandwidths Bandwidths..
4.4.4.2.3 RF Modules Two SDR 4T4R RRUs or four SDR 2T2R RRUs can be used for 4T6S. 4-8 shows the typical hardware Figure 4-8 shows hardware connections when two SDR 4T4R RRUs are deployed. Figure 4-8 4T4R 4-8 4T4R hardware hardware connections
NOT NO T
In this deployment mode, the multi-site cell solution is recommended for GSM and the 2T4R solution cannot be used.
4-9 shows shows the typical hardware hardware connections when four SDR 2T2R RRUs are Figure 4-9 deployed. Issue Draft A (2021-12-30)
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Figure 4-9 2T2R 4-9 2T2R hardware hardware connections
NOT NO T
In this deployment mode, the multi-site cell solution is recommended for GSM and the 2T4R solution cannot be used.
If the Concentric Cell function of GSM is enabled, only the 2T4R solution can be 4-10 shows shows the hardware connections. used. Figure 4-10
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Figure 4-10 2T4R 4-10 2T4R hardware hardware connections
In this case, one 4T4R RRU is used to deploy a 2T4R cell on the GSM side, and two 4T4R RRUs are used to deploy 4T4R cells (where each RRU provides two channels for a cell) on the NR side. Figure 4-11 4-11 shows shows the feeder connections.
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Figure 4-11 Feeder 4-11 Feeder connections
4.4.5 Network Planning 4.4.5.1 Cell ID Planning Principles For a new cell, the cell ID must be an ID unused within the site. For an original cell, the cell ID inherits the original cell ID after the reconstruction.
4.4.5.2 Neighboring Cell Planning Principles For a new cell, plan its neighboring cells according to the neighboring cell planning principles for new cells. For an original cell, its original neighbor relationships need to be inherited and the neighbor relationships with new cells need to be added after the reconstruction. Issue Draft A (2021-12-30)
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4.4.5.3 PCI Planning Principles For new cells, physical cell identier identier (PCI) (PCI) planning is the same as that for three common sectors. For the original cells, PCI planning should ensure that PCIs mod 3 do not conict conict with with each other. This is because the number of PCI reuse times increases, the PCI reuse distance decreases, and the probability of PCI conict increases after the reconstruction.
4.4.6 Others None
4.5 Operation and Maintenance This section describes only the MML commands, activation verication, verication, and and network monitoring on the NR side.
4.5.1 Using MML Commands Reconstructing 2T3S to 4T6S (Using Integrated 4T4R RRUs) //Adding a sector and sector equipment, with the SECT SECTOR.ANTNUM OR.ANTNUM parameter set to 4 ADD SECTOR: SECTOR: SECT SECTORID=0, ORID=0, SECNAME="0", USERLABEL="0", ANTNUM=4, ANT1CN=0, ANT1SRN=60, ANT1SN=0, ANT1N=R0A, ANT2CN=0, ANT2SRN=60, ANT2SN=0, ANT2N=R0B, ANT3CN=0, ANT3SRN=60, ANT3SN=0, ANT3N=R0C, ANT4CN=0, ANT4SRN=60, ANT4SN=0, ANT4N=R0D, CREATESECTOREQM=TRUE, CREATESECTOREQM=TRUE, SECTOREQMID=0; //Adding baseband equipment ADD BASEBANDEQM: BASEBANDEQM: BASEBANDEQMID=0, BASEBANDEQMID=0, BASEBANDE BASEBANDEQMTYPE=ULDL, QMTYPE=ULDL, UMTSDEMMODE=NULL, SN1=0; //(Optional) Adding operator and tracking area information (if not added previously) //Adding an operator ADD GNBOPERATOR: OperatorId=0, OperatorName="CMCC", Mcc="460", Mnc="00", NrNetworkingOption=SA; //Adding a tracking area ADD GNBTRACKINGAREA: TrackingAreaId=0, Tac=1; //Adding an NR cell with a duplex mode of FDD ADD NRCELL: NrCellId=0, CellName="CELL1", CellId=1, FrequencyBand=N3, DuplexMode=CELL_FDD; //Adding an NR DU cell with a duplex mode of FDD ADD NRDUCELL: NrDuCellId=0, NrDuCellName="DUCELL1", NrDuCellName="DUCELL1", DuplexMode=CELL_FDD, CellId=1, PhysicalCellId=1, FrequencyBand=N3, DlNarfcn=370000, UlBandwidth=CELL_BW_20M, DlBandwidth=CELL_BW_20M, DlBandwidth=CELL_BW _20M, SubcarrierSpacing=15KHZ, SubcarrierSpacing=15KHZ, LogicalRootSequenceIndex=80, LogicalRootSequenceIndex=80, TrackingAreaId=0, rackingAreaId=0, SsbDescMethod=SSB_DESC_TYPE_GSCN, SsbDescMethod=SSB_DE SC_TYPE_GSCN, SsbFreqPos=4625, SsbSubcarrierSpacing=15KHZ; SsbSubcarrierSpacing=15KHZ; //Adding a TRP for the NR DU cell, and binding the baseband equipment to the TRP (if required) ADD NRDUCELLTRP: NRDUCELLTRP: NrDuCellTrpId=0, NrDuCellTrpId=0, NrDuCellId=0, TxRxMode=4T4R, BasebandEqmId=0, PowerCongMode=TRANSMIT_POWER, MaxTransmitPow MaxTransmitPower=320, er=320, CpriCompression=NO_COMPRESSION, CpriCompression=NO_COMPRESSION, FrAndDuplexMode=FDD; //(Optional) Setting the transmit power for each channel MOD NRDUCELLCO NRDUCELLCOVERAGE: VERAGE: NrDuCellT NrDuCellTrpId=0, rpId=0, NrDuCellCoverageId=0, NrDuCellCoverageId=0, TransmitPowerOfsetChn0=0, TransmitPowerOfsetChn0=0, TransmitPowerOfsetChn1=0, TransmitPowerOfsetChn2=0, TransmitPowerOfsetChn1=0, TransmitPowerOfsetChn2=0, TransmitPowerOfsetChn3=0; //Adding an NR DU cell coverage area, and binding the sector equipment to the TRP of the NR DU cell ADD NRDUCELLCOVERAGE: NRDUCELLCOVERAGE: NrDuCellTrpId=0, NrDuCellCoverageId=0, SectorEqmId=0; //Activating the cell ACT NRCELL: NrCellId=0;
Reconstructing 2T3S to 4T6S (Using Combined 4T4R RRUs) //Adding a sector ADD SECTOR: SECTOR: SECT SECTORID=0, ORID=0, SECNAME="0", USERLABEL="0", ANTNUM=4, ANT1CN=0, ANT1SRN=61, ANT1SN=0, ANT1N=R0A, ANT2CN=0, ANT2SRN=61, ANT2SN=0, ANT2N=R0B, ANT3CN=0, ANT3SRN=62, ANT3SN=0, ANT3N=R0A, ANT4CN=0, ANT4SRN=62, ANT4SN=0, ANT4N=R0B, CREATESECTOREQM=FALSE; //Adding sector equipment ADD SECTOREQM: SECTOREQMID=0, SECTORID=0, ANTCFGMODE=ANTENNAPORT, ANTNUM=4, ANT1CN=0, ANT1SRN=61, ANT1SN=0, ANT1N=R0A, ANTTYPE1=RXTX_MODE, ANT2CN=0, ANT2SRN=61,
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ANT2SN=0, ANT2N=R0B, ANTTYPE2=RXTX_MODE, ANT3CN=0, ANT3SRN=62, ANT3SN=0, ANT3N=R0A, ANTTYPE3=RXTX_MODE,, ANT4CN=0, ANT4SRN=62, ANT4SN=0, ANT4N=R0B, ANTTYPE4=RXTX_MODE; ANTTYPE3=RXTX_MODE //Adding baseband equipment ADD BASEBANDEQM: BASEBANDEQM: BASEBANDEQMID=0, BASEBANDEQMID=0, BASEBANDE BASEBANDEQMTYPE=ULDL, QMTYPE=ULDL, UMTSDEMMODE=NULL, SN1=0; //(Optional) Adding operator and tracking area information (if not added previously) //Adding an operator ADD GNBOPERATOR: OperatorId=0, OperatorName="CMCC", Mcc="460", Mnc="00", NrNetworkingOption=SA; //Adding a tracking area ADD GNBTRACKINGAREA: TrackingAreaId=0, Tac=1; //Adding an NR cell with a duplex mode of FDD ADD NRCELL: NrCellId=0, CellName="CELL1", CellId=1, FrequencyBand=N3, DuplexMode=CELL_FDD; //Adding an NR DU cell with a duplex mode of FDD ADD NRDUCELL: NrDuCellId=0, NrDuCellName="DUCELL1", DuplexMode=CE DuplexMode=CELL_FDD, LL_FDD, CellId=1, PhysicalCellId=1, FrequencyBand=N3, DlNarfcn=370000, UlBandwidth=CELL_BW_20M, DlBandwidth=CELL_BW_20M, DlBandwidth=CELL_BW _20M, SubcarrierSpacing=15KHZ, SubcarrierSpacing=15KHZ, LogicalRootSequenceIndex=80, LogicalRootSequenceIndex=80, TrackingAreaId=0, rackingAreaId=0, SsbDescMethod=SSB_DESC_TYPE_GSCN, SsbDescMethod=SSB_DE SC_TYPE_GSCN, SsbFreqPos=4625, SsbSubcarrierSpacing=15KHZ; SsbSubcarrierSpacing=15KHZ; //Adding a TRP for the NR DU cell, and binding the baseband equipment to the TRP (if required) ADD NRDUCELLTRP: NRDUCELLTRP: NrDuCellTrpId=0, NrDuCellTrpId=0, NrDuCellId=0, TxRxMode=4T4R, BasebandEqmId=0, PowerCongMode=TRANSMIT_POWER, MaxTransmitPow MaxTransmitPower=320, er=320, CpriCompression=NO_COMPRESSION, CpriCompression=NO_COMPRESSION, FrAndDuplexMode=FDD; //Adding an NR DU cell coverage area, and binding the sector equipment to the TRP of the NR DU cell ADD NRDUCELLCOVERAGE: NRDUCELLCOVERAGE: NrDuCellTrpId=0, NrDuCellCoverageId=0, SectorEqmId=0; //Activating the cell ACT NRCELL: NrCellId=0;
4.5.2 Using the MAE-Deployment Multi-sector solutions can be congured congured using using the MAE-Deployment. For details, contact Huawei engineers.
4.5.3 Activation Vericatio Verication n For NR 2T6S, activation verication verication is is similar to that for common 2T cells. For 4T6S, check whether 4R takes efect efect after after the deployment. Specically, Specically, monitor monitor uplink RSSI statistics to determine whether the four channels have RX power. For the GSM multi-site cell solution, see GBSS Multi-site Cell for for activation verication. For verication. For the GSM 2T4R solution, see GBSS Transmit Diversity Di versity and and Four-Way Receive Diversity for for activation verication. For the UMTS multi-RRU cell solution, see RAN Multiple RRUs in One Cell for for activation verication. verication. For For the UMTS 2T6S solution, see RAN UMTS Multi-Sector Solution Guide for for activation verication. For multi-sector solutions on the LTE LTE side, see eRAN Multi-Sector Solutions (FDD) .
4.5.4 Network Monitoring Obtain the cell-level counter values within at least one week before and after a multi-sector solution is deployed, calculate KPIs, and estimate capacity gains. The related indicators are as follows:
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●
User Uplink Average Throughput (DU)
●
User Downlink Average Throughput (DU)
●
N.ThpVol.UL
●
N.ThpVol.DL
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5
Glossary
For the acronyms, abbreviations, terms, and denitions, denitions, see see Glossary .
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6 Reference Documents
6
Reference Documents
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1.
3900 & 5900 Series Base Station Product Documentation
2.
GBSS Multi-site Cell
3.
GBSS Transmit Diversity Diversit y
4.
GBSS Four Four-Way -Way Receive Diversity
5.
RAN Multiple RRUs in One Cell
6.
GBSS GSM Multi-Sector Solution Guide
7.
RAN UMTS Multi-Sector Solution Guide
8.
eRAN Multi-Sector Solutions (FDD)
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