zxsdr bts and node b basic theories

8/19/2019 ZXSDR BTS and Node B Basic Theories

1/89

内部公开▲

SDR Basic Theories


2/89

Internal Use▲

Course Objectives:

To master the structure of SDR base station

To understand the SDR modules

To understand the special features of SDR

To master the interfaces beteen BBU and RU!RRU


3/89

Internal Use▲

Contents

Basic Concepts of SDR

Structure of SDR Base Station

BBURU/RRU

Interfaces between BBU and RU/RRU

Special Functions of SDR Base Station


4/89

"volution of #ulti$#ode Base Station

ZTE macro-Base Station I!

arc"itecture #$TR% cabinet

Traditional macro-Base

Station &T' arc"itecture#(TR% cabinet

Different Base Station

s%stems

overlappedTD#!&T# platform'arroband architecture

(o inte)ration and hi)hconsumption

*+ #ultimode

Base Station

Different Base Station S%stemsInterchan)ed

,* BBU!RRU Interchan)eableI-!&T# architectureIncreasin) inte)ration

*. #ultimode

Base Station

Shared broadband multi$carrier moduleShared uTC& BBU/ull$I- architecture and unified platform#ulti$s%stem conversion for same fre0uenc%

softareUltra$hi)h inte)ration and lo consumption

*, #ultimode

Base Station $ SDR

Unified Radio Resource

#ana)ementS%stem conversion for

adjacent fre0uenc% softareInte)rated BSC function#"S1 netor2 &rchitecture

*3 #ultimode

Base Station $ /lat SDR

ZTE SDR )*TR% cabinet


5/89

Innovative Base Station -latform Unified multi$mode and multi$fre0uenc% band

Base Station hardare platform

4TC& 5#icro Telecommunication Computation

&pplications67based BBU baseband

processin) unit

-latform structure ith separated baseband

and R/ units R/ unit based on #C-&

Spectrum resource

optimi+ation utili+ation

,etwor resource optimi+ation

inte.ration

Smoot" wireless networ

eolution0ptimal TC0 solution

CD#&.888 9CD#&

(T"*S# TD$SCD#&


6/89

SDR Based Uni$R&' Solution 1i)hli)hts

CommonComponents Shared

•Diferent BP boardsSDR RRU Spectrum

Rearming Capable

Multi-band Supported

Multi-Mode BaseStation andConvergent Radio

et!or" Controller

Multi-bandSupport Smooth#volution#D$# #volution$SM-%UM&S-%'

(ull Speed )SP*+,*M )SP*.M/M0 )SP*.DC.+,*M)SP*.

123 P* #4cienc5D-P& &echnolog56 Sector RRU

Solution$reen #nerg5

0utdoor/nstallation7ero (ootprintSmaller Si8e'ighter 9eight

)igh ualit5 Base

Station Product)igh Reliabilit5et!or"ingUni:ed 0;M S5stemPo!erul et!or"0ptimi8ation &ools


7/89

/uture Oriented SDR Technolo)%

"nsurin) #ulti$#ode 'etor2 Conver)ence

W

HH+G

L

Convergence

SDR

Based on uni:ed /Pplatorm !ith MCP*

e! generation multimode base station

Convergence< revolutionor traditional base station

•Smart sot!are supports

' evolution

•Smart con:guration

supports diferent s5stems

•Same base station

supports diferent s5stems

•Sot!are upgrade supports

diferent evolutions

•Multi-mode

•Multi-band

•(lat net!or"

•Smooth evolution

Sot!are Solution

De:ne Designed

Radio Rearming


8/89

9hat is SDR 5+6

The softare radio technolo)ies defined b% the SDR forumare classified into five levels: 1R; SCR; SDR; ISR and

USR<

1R hardare radio Tier8< /or e=ample; the traditional

sin)le$mode base station< SCRsoftare choose radio

/eature: Sin)le$mode base transceiver stations of

different modes can be placed to)ether; but the% are

inte)rated in terms of softare<


9/89

9hat is SDR 5.6

SDR$ Softare Defined Radio: it means the softare can be used toselect a demodulation mode; broadband si)nals or narroband

si)nals< >T" >DR base station series leads the technolo)ies in the

industr%<

/eature: Different radio modes can share hardare; includin) R/ front

end; &DC!D&C and base band processin)<


10/89

9hat is SDR5,6

ISRIdeal softare radio/eatures: +6 )et rid of the analo) R/ front end? .6 the hole s%stem

can be controlled b% pro)rammin) e=cept the antenna<

USRUltimate softare radio

/eatures: +6 it has the function of the ISR? .6 the controllin) softare

should be standardi@ed< Sitch beteen different radio modes can befinished ithin milliseconds<

The ISR cannot be idel% used because the technolo)% is not mature<


11/89

9hat is SDR536

SDR and co)nitiveradio

Co)nitive radio is an

important technolo)%

of USR< It canperceive the

surroundin)s; and

adjust the ireless

bandidth and de$

modulation mode

accordin)l%<


12/89

RRUBBU

Indoor 'acro

0utdoor

'acro

'C!&-based broadband Radio

Unit wit" multi-mode supported1

Sufficient output power of 2!&

wit" lower power consumption1 'icroTC& structure Base Band

Unit wit" "i." reliabilit3 and

eas3 e4pansion1

2i." inte.rit3 5 processin.

capabilit36 up.rade to 2S!&7 ia

software6 minimum up.rade cost

to support 8TE1

ZTE SDR 9 :e3 Features

SDR Base Station Ae% /eatures


13/89

Broadband #C-&

Sin.le-Carrier !& 'ulti-Carrier !&

Combiner 5 &ntennaCombiner 5 &ntenna

InterfaceInterface

Di.ital IF !rocessDi.ital IF !rocess

BBUBBU

!!

TR%#TR%#

!&(!&(

TR%(TR%(

!&)!&)

TR%)TR%)

!&9!&9

TR%9TR%9

f# f( f) f9

Duple4 5 &ntennaDuple4 5 &ntenna

'C!&'C!&

'TR%'TR%

InterfaceInterface

BBUBBU

Di.ital IF !rocessDi.ital IF !rocess

（ f#;f*<

（ f#;f*<

SDR desi)n is based on #C-& at the same fre0uenc%?

#C-& provides fle=ible fre0uenc% optimi@ation technolo)% and better e0uipment inte)rit%<


14/89

Internal Use▲

Contents



BBU

RU/RRU




15/89

Internal Use▲

SDR technolo)ies tri))er the transformation of base

station structure

Si)nificant feature of SDR 7 softare defines radio modes

1 The RF front end processes signals of

multiple radio modes

2 Baseband processes signals of multiple

radio modes

3 oft!are integration to unif" soft!are #ersions

$R technolog"$R technolog"

% % the s"stem supportsthe s"stem supports

multiple radio modesmultiple radio modes


16/89

Internal Use▲

The mar2et drives the base station structure to

transform

*reen base

station

Cost$

effective

BSBS

StructureStructure

A B

Full

compatibilit3

D9ireless

inte)ration;I- technolo)%

C


17/89

Internal Use▲

Structure of >T" SDR base station

Support the distributed structure of BBU and RRU< /or traditional base

stations; BBU and RRU should be in the same module<

#ulti$mode base band pool BBU

#ulti$mode R/ platform

&dopt I- technolo)% to process internal data stream of the base

station O#C platformO#CR and O#CB

Unified softare platform

The distributed structure of BB& and RR& and R'$ on a unified

platform are the core of the $R base stations( The ne! structuremeets the demand and technolog" re)uired b" the mar*et(


18/89

Internal Use▲

Structure of Traditional #acro Base Station

C

M

B

TRM1

TRM2

TRM3

TRM18

A

E

M

PDM FCMETM

&,T

Structure of #acro BS

T"e structure of traditional indoor macro base station


19/89

Internal Use▲

SDR -roduct Structure

The BBU and RRU!RU are seperated<

&,T

Transceiver

Front end of R4

Duple=

'ulti-

carrier !&

E4ternal power !=S((>?&C

RRU/RU

BBU

Resource

control board

BBU baseband pool /iber


20/89

Internal Use▲


Distributed base station: R/ is distributed remotel%


21/89

Internal Use▲


#acro base station: BBU and RU are all in the cabinet; hich isdifferent from the distributed base station in structure<


22/89

Internal Use▲

&dvanta)e+ of SDR Structure 7 Separated

BBU and RRU

In this mode; both BBU and RRU andma=imi@e their efficienc%< BBU can achieve

the ma=imum inte)ration; and RRU can

focus on the poer of itself<

The netor2in) is fle=ible if the RRU is

distributed remotel%< /or e=ample; it cansupport multi$carrier and indoor distributed

covera)e<

BBU and RRU can be distributed fle=ibl%;

hich benefit for compatibilit% desi)n<


23/89

Internal Use▲

&dvanta)e. of SDR Structure 7 Baseband

1ardare -latform

Support multiple radio modes 5*U6 Simple desi)n

-oerful processin) capabilit%

"as% to mana)e

"as% to share resources

Cut cost

"as% for evolution of baseband technolo)ies


24/89

Internal Use▲

&dvanta)e, of SDR Structure 7 Independent

R/ Unit

Simplified functions Improved reliabilit%; eas% for maintenance

Improved the efficienc% of the poer amplifier

Optimi@ed heat desi)n; eas% for inte)ration

Closer to antenna; hence bi))er poer

/le=ible forms of RU!RRU products

1elp to reduce the si@e and ei)ht of base stations

Cost$effective


25/89

Internal Use▲

&dvanta)e3 of SDR Structure 7 Unified Interface

of BBU and RU!RRU

The interface beteen BBU and RU!RRU is the e=clusiveinterface for communication beteen BBU and RU!RRU <

The interface beteen BBU and RU!RRU supports such radio

modes as *S#; 9CD#&; TD$SCD#&; etc<

Support fiber interface and electrical interface

Support +


26/89

Based on SDR hardware platform, all-IP and multiplecarriers capable

All base stations share the same components, higherintegration and less spares

Baseband unit

B8!!

R88"!#R88$!

Indoor macro%&SDR BS88!!

'utdoor micro

%&SDR BS8(!"

Distributed macro%&SDR BS8)!!

RS*$!RS*"!#RS*8utdoor macro

&SDR BS8(!!A

Radio *nit

RS*$!RS*"!#RS*8

R888!A

'utdoor mini

%&SDR BS8(!8

R888R88(!

#mbedded indoor macro

RS*$!RS*"!#

+ulti-+ode Supported

S+*+.S/SPA0

S+1.#

*+.S/SPA01.#

+ulti-Band Supported

*(!!+, 128!!+

*12!!+, 1"!!+

1ong term .C'

Sa3ing

4!5 /PA

technolog6

Smart carrier

'n'7 Smooth #3olution

"$A+ /SPA0 +I+' /SPA0

1.#

SDR Based Series Base Stations /amil%


27/89

Internal Use▲

>T" *S# SDR Base Station Series 5+6

BS88 consists of B.88 and RE8

B.88 7 poerful BBU; supportin) E8 *S# carriers; and both *S# and

9CD#&

RE8 7 dual mode RRU; broadband transceiver

It supports *S# sin)le$mode E$carrier; or 9CD#& sin)le$mode ,$sector;or supports both radio modes at the same time<

Distributed base station 7 BS88

>FSDR BBU>FSDR BBU >FSDR RRU

R(

#S#S

UmUm口口

CPR/CPR/

OpticalOptical

fiber fiber


28/89

Internal Use▲

BS88 7 Indoor SDR macro base station BBU 7 baseband unit? as B.88; BS88 can at most contain to

BBUs<

RU8. 7 radio unit of *S#? supports to *S# carriers? BS88 cabinet

can contain E RU8. modules? its transmission poer is .89!389< RUE8 7 *U dual mode R/ unit< The core part is the same ith that of

RE8< It supports E *S# carriers or , U#TS cells or *U dual$mode

confi)uration< Cabinet$top transmittin) poer is E89<

RU8 7 *U dual mode RU unit< It is an up)raded version based on

RUE8< Cabinet$top transmittin) poer is 89<

>T" *S# SDR Base Station Series 5.6


29/89

Internal Use▲

BS88 is developed on >T"Gs unified platform< The rac2 includes the

ph%sical cabinet; -D# unit and /&' unit<

BBU and the RU modules all adopt－ 3H DC poer suppl%<

&ll of the RU modules have the same si@e and outline<

The fan rotation speed can be adjusted b% the softare accordin) to

different heat dischar)e re0uirements for different RU modules; thus to

loer don noises and achieve ener)% efficient<

BS88 has been used in the products of the three radio modes; such

as *S#; CD#& and U#TS<

>T" *S# SDR Base Station Series 5,6

BS88 7 Indoor SDR macro base station


30/89

Internal Use▲

BS88& 7 Outdoor SDR macro base station

>T" *S# SDR Base Station Series 536


31/89

Internal Use▲

'e 'etor2in) #ode+ of SDR Base Station


32/89

Internal Use▲

'e 'etor2in) #ode. of SDR Base Station

Fiber

@E/FE

&T'

R,C 7 iBSC

Switc"

B$(>>

R,C

iBSC

Iub

&bisIub/&bis

Iu-4

&/@b

R$$*>

,et,umen

C,


33/89

Internal Use▲

Separated control plane and user plane

Separated O#CR and O#CB

Separated platform softare and service softare

*S# and U#TS are supported to)ether<

Baseband pool 7 fle=ibl% allocates the correspondin) relationbeteen the baseband processin) unit and R/ processin) unit<

I- &bis interface; ith SDR supportin) I-over"+; *"!/"; I-

protocol stac2; H(&'<

Softare &rchitecture of SDR Base Station


34/89

Internal Use▲

Softare &rchitecture of SDR Base Station 7

BBU Softare 5+6 -rocesses the protocols of user plane and control plane<

Completes the site confi)uration<

Donloads and saves versions from the upper$level '"<

Collects; processes and reports the alarms<

-rocesses the U(!D( baseband data< Confi)ures and monitors RU<


35/89

Internal Use▲


RU Softare Status mana)ement

Hersion mana)ement

/ault mana)ement

Confi)uration mana)ement

Test mana)ement

-oer measurement

(#T


36/89

Internal Use▲


O#C Softare 5+6


37/89

Internal Use▲


O#C Softare 5.6 O#CB is an operation and maintenance unit to mana)e 'odeB in

,*--< >T"Gs SDR base stations support both radio modes of *S#

and 9CD#&< Connection mode of the traditional base station: O#CR$

JBSC$JBTS? Connection mode of the SDR: O#CB$JBTS; O#CR$

JBSC$JBTS<

&ccordin) to the mana)ement mode of 9CD#&; the board

mana)ement; confi)uration; softare donloadin) and alarms are all

mana)ed b% O#CB< In case of the dual$mode; operation andmaintenance tas2s of *S# are moved to O#CB; and O#CR mana)es

*S# related radio confi)uration and status mana)ement<


38/89

Internal Use▲


O#C Softare 5,6 O#CR is connected to BTS throu)h BSC; re)ardless the lin2 status

beteen BSC and BTS< O#CR sends data to BSC; ho then

s%nchroni@es the data to BTS<

O#CB is different from O#CR< O#CB interacts ith SDR throu)h I-

lin2s< The interaction beteen O#CB and SDR ma% pass or not pass

throu)h BSC!R'C< O#CB and SDR confirm data transmission onl%;

and BSC!R'C needs not to ma2e confirmation< -h%sicall%; O#CB can

interact ith SDR throu)h I- routes provided b% BSC!R'C<

/or dual$mode sites; some O#CB connects ith BSC; and some

O#CB connects ith R'C< BSC!R'C then connects ith SDR throu)h

I- transmission<


39/89

Internal Use▲


O#C Softare 536 O#CB and O#CR can share the same server or board; but the% are

to different pro)rams and there is no direct interaction beteen them<

1ence; it is necessar% to )uarantee data consistent manuall%<

Theoreticall%; the basic board information is confi)ured on O#CB; and

the lo)ic information is confi)ured on O#CR< If data are inconsistent

beteen them; e ill ta2e the data on O#CB as the reference data<

The main control board of the SDR ill 2eep a cop% of all confi)uration

data of the O#CB< 1ence; the data ta2es effect directl% hen the SDR

starts; ithout direct interaction beteen the SDR and O#CB< Then;

the SDR creates a lin2 to BSC and re0uests for radio parameters; and

BSC sends the data e=cept confi)uration information of O#CB to the

SDR< Thus; a complete data confi)uration table is )enerated< That is atheoretic process< In practice; it is necessar% to modif% the data

confi)uration< /or e=ample; modif% radio parameters for e=pansion

projects< Data confi)uration of O#CB should be compatible ith that

of O#CR; otherise; the SDR cannot respond correctl%<


40/89

Internal Use▲

Control -lane of SDR -latform

&bis interface: connect to iBSC b% /" or "+

/": direct transmission b% I- directl%< The protocol stac2 is shon in

the belo fi)ure on the left<

"+: transmission b% I- Over "+< The protocol stac2 is shon in the

belo fi)ure on the ri)ht<


41/89

Internal Use▲

#edia -lane of SDR -latform

The media plane supports transmission b% the RT- protocol

The UB-* of SDR and the BI-B of iBSC process RT- data of the

user plane<

CC is responsible for forardin) messa)es inside the BBU and over

the &bis interface<

I t l U ▲


42/89

Internal Use▲

Contents



BBU

RU/RRU



**


43/89

9olume: ==>, mm?,=@>+ mm?A mm )?9?DE

;eight: =>1 "g ull con:gurationE

Based on *ni :

UM&SF 19 +CSsE< AA29 A@ CSsE

$SMF 129 A@ &RGsE< +19 @,

&RGsE

Power Suppl6: -,=I DC

.emperature Range: -@2J to . 11J

Performance Index Performance Index

Physical Index Physical Index

**

Interface Index Interface Index Iub interface:

= #AH&A #Kpandable to A+E A $# optical or A?$#H(# electrical

@ S&M-A

CPRI interface: A@ CPR/ optical interaces

Interface Index Interface Index

Iub interface: = #AH&A #Kpandable to A+E

A $# optical or A?$#H(# electrical

@ S&M-A

CPRI interface: A@ CPR/ optical interaces

88?$mm

$8?"mm

2()mm

+ulti-mode supporting

All-IP structure

1ow power consumption

1arge

capacit6

Rich

interfaces

Smooth

e3olution

Base Band Unit >FSDR B.88

I t l U ▲


44/89

Internal Use▲

1ardare 7 Boards

Control and cloc2 module 5CC6

/abric sitchin) module 5/S6

Site alarm module 5S&6

Baseband processin) board 5B-A!UB-*6

/an arra% module 5/&6

-oer module 5-#6

Bac2plane board 5BB6

**


45/89

>FSDR B.88 Boards K -erformance

/igh

Reliabilit6

/igh

Reliabilit6

**

CC

@SBP

P+

SA @ a n+odularie

d Design

+odule ame Shared b6*1+in+a

Con


46/89

Internal Use▲

1ardare 7 Interfaces

"+ : ma=imum "+、 T+ *" : . ; + is optical!electronical; + is electronical C-RI : E ports for + /S board; ma=imum +. ports *-S : +

C-RI

*""+ *"

*-S

**


47/89

Control K Cloc2 5CC6 Board Introduction

$PS s5stem cloc" ; B/&S cloc" ; S5nc# cloc" ; interace recover5 cloc"

*bisH/ub interace protocol processing

#thernet s!itch unction< providing s!itch plan or signaling and media

stream

S5stem management

**

Interface 'ame Description

"T18"thernet interface beteen BBU and BSC!R'C; adaptin)interface of +8#!+88#!+888#<

"T1+

"thernet interface used for cascadin); debu))in) or local

maintenance; adaptin) interface of +8#!+88#!+888#<

TF!RFUsed for "thernet interface connection beteen BTS andBSC!R'C< This interface is +88#!+888# "thernet opticalinterface<

"FT"=ternal communication port; connected to e=ternal receiver;

#ainl% 3 interfaces<

R"/ "=ternal connection *-S antenna; S#&5/6 interface

Internal Use▲


48/89

Internal Use▲

1ardare /unction #odule 7 CC5+6

Inte)rate such functions as main control; cloc2; sitchin) and the Iub!&bis

interface -h%sicall%; the CC does not provide the "+!T+ interface< It connects "+!T+ to

the S& throu)h the bac2plane of BBU; and the S& provides the "+!T+

interface<

Support the master!slave mode

/ull I- transmission CC8: It supports internal or e=ternal *-S; cloc2 cascaded connection; and +E

"+ lin2s< It does not support .#Bits cloc2<

CC.: It does not support internal or e=ternal *-S and cloc2 cascaded

connection< It supports .#Bits cloc2 and "+ lin2s<

**


49/89

/abric Sitch 5/S6 Board Introduction

@abric Switch +odule

Baseband / data eKchange

Provide interaces bet!een RRU and BBU

**


TF8 RF8～ TF RFE pairs optical interfaces;connected to RRU

Internal Use▲


50/89

Internal Use▲

1ardare /unction #odule 7 /S

It supports the master!slave mode and the load sharin) function<

The slot for /S is also compatible for the baseband board<

E +


51/89

Site &larm!Site "=tension 5S&!S"6 Board

Introduction

Site Alarm BoardSite Alarm #tension Board ='ptional>

(an rate controlling

Site alarm monitoring and interace lightning protection or the

rac"

Provide + input dr5 contacts< @ input ; output dr5 contacts

Provide = #AH&A interaces

**

Interface'ame

Description

$

"+!T+ interfaces;

+ RS3interface;

+RS.,. interface;

EL. dr% contacts 5 E input interfaces; . input K outputinterfaces 6

Internal Use▲


52/89

1ardare /unction #odule 7 S&!S"

"nvironment monitorin) module

/an monitor

S&: support channels of "+!T+ si)nals; + RS.,. serial port or

+ RS3 interface; E input dr% contact alarm; and . double$

directional dr% contact alarm

S": support E input dr% contact alarm; and . double$directionaldr% contact alarm 5installed at Slot on BBU6

**


53/89

Baseband -rocessin) 5B-6 Board

Introduction

*ni3ersal Baseband Processing Board for S+

=*BP>

MaKimum processing capacit5 is A@ &RGs

*ni3ersal Baseband Processing Board for

S+ =*BP>

*nother t5pe o $SM baseband processing board

Providing the same unctionalities as UBP$

Supporting 6 CPR/ interaces used or RRU remote

connection

Baseband Processing Board .6pe C =BPC>

MaKimum processing capacit5 is + CSs

MaKimum capacit5F U' A@C#sHD' A@ C#s< U' A1MbpsHD'

+2Mbps

Baseband Processing Board .6pe =BP>

**

Internal Use▲


54/89

1ardare /unction #odule 7 UB-*

*S# baseband processin) module Responsible for baseband modulation< Donlin2: processin) up

to +. carriers; speed adaption; channel codin) and interleavin);encr%ption? producin) TD#& burst pulse; *#SA!-SAmodulation? outputtin) IP baseband di)ital si)nals? sendin)poer and fre0uenc% control information to RRU for processin)<

Responsible for baseband modulation< Uplin2: process up to +.carriers? after receivin) IP baseband data from RRU; performdiversit% combination for the receiver; di)ital demodulation5*#SA and -SA demodulation; balance6; decr%ption; de$interleavin); channel decodin) and speed adaption; and then

sends to the CC board throu)h the "thernet port<

Internal Use▲


55/89

1ardare /unction #odule 7 /&

/an monitorin) module

-oer suppl%; rotation control and status report

("Ds on the fan subrac2

**


56/89

-oer #odule 5-#6 Board Introduction

Power +odule

A+ internal interaces or .A@I load po!er

A+ internal interaces or .6>6I management po!er

Measurement and protection o inputing over-

voltageHunder-voltage

0utput over-current protection and load po!er

management

**


#O' Debu))in) interface; RS.,. interface$3H!$3HRT' $3H input

O'!O//-oer sitch; turnin) on!off +.H poerto!from BBU

Internal Use▲


57/89

1ardare /unction #odule 7 -#

& sin)le -# provides +E +.H$poer suppl%; hich can meet the

poer suppl% re0uirement of B.88 in full confi)uration<

To -#s or2in) in master!slave mode

Internal Use▲


58/89

Dia)ram of /S IP sitchin)

Internal Use▲


59/89

BBU Confi)uration Rules

Board Confi.urations-oer module 5-#6 + -# is confi)ured b% default< Decide hether it is necessar% to

confi)ure . -#s accordin) to the re0uirement for reliabilit% and cost<

Site alarm module 5S&6 + S& is confi)ured b% default<

Control and cloc2 module 5CC6 + CC is confi)ured b% default< Select either CC8 or CC. accordin) tothe cloc2 and "+< Decide hether it is necessar% to confi)ure . CCsaccordin) to the re0uirement for reliabilit% and cost<

/abric sitch module 5/S6 *enerall%; + /S is confi)ured; and . /Ss at most< The 0uantit%depends on site confi)uration<

Universal basebandprocessin) board for *S#5UB-*6

The 0uantit% depends on site confi)uration<

The slots are compatible for both the B-C and the UB-*<

Baseband processin) board

t%pe C 5B-C6

The 0uantit% depends on site confi)uration<

The slots are compatible for both the B-C and the UB-*<

/an arra% module 5/&6 + /& onl% is confi)ured

Site alarm e=tension board5S"6

Optional; hich depends on the 0uantit% of dr% contacts<

It is inserted at Slot <

Internal Use▲


60/89

Contents



BBU

RU/RRU



Internal Use▲


61/89

#ulti$carrier RU!RRU 5+6

RU!RRU uses multi$carrier technolo)%< IT

performs si)nal s%nthesis for multiple carriers< Ituses onl% one set of boards and -&; and one set

of antenna s%stem< RUE8 supports si)nal

s%nthesis for E carriers<

The RU!RRU module has onl% to e=ternalantenna ports< It supports sin)le$transmittin)

and double receivin) )enerall%< If the cell has

over E carriers; one port should be reserved to

connect the other RU<

RU!RRU adopts broadband transceiver and

broadband poer amplifier<

Internal Use▲


62/89

#ulti$carrier RU!RRU 5.6

RU!RRU is responsible for functions of the

baseband R/ interface and the Uu!Um interface<

RU!RRU is responsible for access and radio lin2

transmission of U"!#S throu)h the Uu!Um

interface; includin) R/ processin);

modulation!demodulation; measurement and report;

poer control; receivin) diversit%; correction;

s%nchroni@ation; etc<

It connects to BBU throu)h the optical interface b%

the C-RI protocol< It implements the folloin)functions throu)h the optical interface; such as IP

data transmission; measurement report; R/ function

confi)uration; cloc2 s%nchroni@ation; etc<

Internal Use▲


63/89

#ulti$carrier RU!RRU 5,6

Common RRU models:

R38: .+88# U#TS sin)le mode? cabinet$top transmittin)

poer: E8; supportin) 3CS 5actuall%; ,CSs are confi)ured to

meet the re0uirement of .8!CS


64/89

#ulti$carrier RU!RRU 536

R38: support $3HDC、 ++8H&C、 ..8H&C

RE8": support $3HDC? not support &C poer suppl%

R8&: support $3HDC? not support &C poer suppl%

R.: support $3HDC? not support &C poer suppl%

**


65/89

Radio Unit >FSDR RSU38

)

4

E

$

2

"

2.R

Capacit6: , carriers

+a .'C:

+29

Recei3ing Sensiti3it6:

UM&SF -A@>@dBmdual

antennas

@reFuenc6 band:

@A22MH*9S

A.

R&inR&ou

t

.& R&

DB

+'

AIS

Power

9olume: ,=@ mm?== mm?6+2 mm

)?9?DE

;eight: A6 "g




)?9?DE

;eight: A6 "g


Interface Index Interface Index G2?4bps CPRI optical interfaces

Antenna interfaces

2 AIS interface

2 @reFuenc6 etension interface

+CPA based, high PA eHcienc6

Supporting $ *+.S carriers

+ature commercial application

S S E8

**


66/89

Radio Unit >FSDR RSUE8"

)

4

E

$

2

"

2.R

Capacit6:

+&RGsH,CsH,&RGs.ACH@&RGs.@Cs

+a .'C:

=29

Recei3ing Sensiti3it6: $SM F -AA6>1dBmsingle

antenna

UM&SF -A@>AdBmdual

antennas

@reFuenc6 band: =12MH22MHA=2M2HA22M

A.

R&inR&ou

t

.& R&

DB

+'

AIS

Power


)?9?DE

;eight: A6 "g


Interface Index Interface Index G2?4bps CPRI optical interfaces

Antenna interfaces

2 AIS interface

2 @reFuenc6 etension interface



Supporting * dual mode

/igh output power

R di U it >FSDR RSU.

**


67/89

Radio Unit >FSDR RSU.

"

4

E2

$

.& R&

+'

AIS

Power

DB

A.

9olume: ,=@ mm?@ mm?6+2 mm

)?9?DE

;eight: A1 "g


Interface Index Interface Index G?4bps CPRI optical interfaces

$GAntenna interfaces

2 AIS interface


Supporting * dual mode

1arge capacit6 and eas6 epansion

'ne module supports sectors or

+I+'

Performance Index Performance Index .$R

Capacit6: @?,&RGs.ACEH@?@&RGs.@CsE

+a .'C:

22MHA=22MF @?=29

@A22MF @?+29

Recei3ing Sensiti3it6: $SMF -AA6>1dBmsingle

antenna

UM&SF -A@>@dBmdual

antennas

@reFuenc6 Band:

22MHA=22MH@A22M

Internal Use▲

RU!RRU C fi ti R l


68/89

RU!RRU Confi)uration Rules

RRU supports at most 3$level cascade connection< In practice;

hoever; it is su))ested to adopt onl% .$level cascaded connectionin netor2in)<

/or RRUs in cascaded connection; there is no limit to the position;

se0uence; fre0uenc% band; and radio mode<

RRUs of different bands share neither antennas nor feeders<

If a bac2bone ph%sical site 5iron toer6 is installed ith over , sets of

RRU; it is necessar% to confi)ure + BBU nearb% the iron toer<

If a bac2bone ph%sical site 5iron toer6 is installed ith both R38

and RE8; it is necessar% to confi)ure + BBU nearb% the iron toer<

If the ph%sical site for hole covera)e is confi)ured ith + 7 . sets ofRRU; it is su))ested to connect the fiber from the nearest bac2bone

BBU; instead of from toer$top bac2bone RRU<

/or multiple sets of RRUs sharin) the iron toer; the isolation

beteen TF!R= and RF must )reater than ,8dB<

Internal Use▲

A T h i f # lti i RU!RRU SRC


69/89

Ae% Techni0ue of #ulti$carrier RU!RRU 7 SRC

SRC 5rate chan)e6 7 reali@es the rate chan)e beteen *S#

si)nal and U#TS si)nal: .8


70/89

Ae% Techni0ue of #ulti$carrier RU!RRU 7 D-D

D-D 7 Di)ital -re$distortion techni0ue

Due to the non$linearit% of -&; the output multi$carrier si)nal is

in serious inter$modulation distortion< Therefore; the pre$

distortion linearit% techni0ue is needed to achieve the

broadband; multi$carrier; ultra$linearit%; and hi)hl%$effective

poer amplification<

Internal Use▲

A T h i f # lti i RU!RRU D-D


71/89

Ae% Techni0ue of #ulti$carrier RU!RRU 7 D-D

The pre$distortion processor pre$distorts the input si)nal;

ma2in) its distortion feature the opposite of that of the post non$linearit% poer amplification< In this a%; hen the pre$distorted

si)nal is transmitted throu)h the non$linearit% poer amplifier;

the distortion feature of the post non$linearit% poer

amplification offsets the pre$distortion feature< Therefore; the

final output si)nal is an e0ual linear poer amplification of the

input si)nal<HPA

+re,distortion parameter

self,adaption estimator

-utput signal.nput signal $ela" +re,distortion

Table address

generation module

+re,distortion

parameter table

Feedbac* signal

sample modul e

Internal Use▲

& li ti f RSUE8" K RE8"


72/89

&pplication of RSUE8" K RE8"

RSUE8" ! RE8" uses the &DTR instead of the previous DTR<

Compared ith RSUE8 5896 !RE8 5896; the% have the same

cabinet$top output poer; but the or2in) bandidth and R/

indices are )reatl% improved< The bandidth of a sin)le module

can reach up to .8#<

/rom Oct< +; .8+8; >T" stops deliverin) RSUE8!RE8; and

deliver RSUE8" and RE8" instead<

Internal Use▲

C t t


73/89

Contents



BBU

RU/RRU



Internal Use▲

BBU d RU!RRU I t f - t l St 2


74/89

BBU and RU!RRU Interface -rotocol Stac2

IP #&C #&C IP

(I'A (I'A

-1Q -1Q

I-

UD-

C--

I-

UD-

C--

TC-TC-

/T- /T-

&-- &--BBU RRU

FIBER

Internal Use▲

Optical /iber Interface


75/89

Optical /iber Interface

"ach /S board supports E fiber interfaces<

"ach RU supports . fiber interfaces<

The fiber supports both star$t%pe and lin2$t%pe netor2in)

/or lin2$t%pe netor2in); at most 3 RUs can be connected incascadin) mode<

BBU is at most 38 Am aa% from the RU<

Internal Use▲

C-RI Interface Confi)uration Rules


76/89

C-RI Interface Confi)uration Rules

BBU is confi)ured ith commercial$level S/-: +


77/89

Contents



BBU

RU/RRU



Internal Use▲

1i)h Inte)ration


78/89

1i)h Inte)ration

BBU supports E8 TRFs<

RU supports ETRF!.TRF<

& fiber can support .3 TRF

Support smooth evolution to (T" and 1S-&L

&ll I- transmission based structure

Support multi$band RRU

Internal Use▲

/le=ible Structure


79/89

/le=ible Structure

Support macro$base station

Support remote RU

Support both /"!*" and "+!T+

Support both indoor and outdoor re0uirements

Small volume and li)ht ei)ht

"ner)% efficient

Support evolution of the technolo)%

Internal Use▲

'e /unctions


80/89

'e /unctions

Baseband fre0uenc% hoppin)

Transmittin) and receivin) diversit%

Combine multiple carriers

&pplied for e=press raila%s

Internal Use▲

Cost effective


81/89

Cost$effective

(oer unit cost

(oer t%pical netor2in) cost

(oer operation cost

(oer maintenance cost

Internal Use▲

Special SDR /unction 7 Baseband


82/89

Special SDR /unction 7 Baseband

/re0uenc% 1oppin)

/re0uenc% hoppin) refers to that multiple fre0uencies are used

for radio transmission of a sin)le speech!si)nalin)!data lin2<

The transmission fre0uenc% 2eeps stable ithin the

transmission period of a burst pulse< /or different burse pulses

of the same lin2; the transmission fre0uenc% ma% chan)e< The

#S ma% be affected b% the fadin) effect of some fre0uenc% on

the transmission path< *S# codin) and inter$leavin)

technolo)% helps to minimi@e the impact of sin)le$burst lost to

the voice 0ualit%<

Basic concept 5+6

Internal Use▲

Basic concept 5.6


83/89

Basic concept 5.6

Baseband fre0uenc% hoppin) means that multiple

transmitters or2 on their respective fre0uencies; and

sitch si)nals of different channels to different transmitters

to send them on the baseband; thus to achieve the

function of fre0uenc% hoppin)< The function of fre0uenc% hoppin) is eas% and feasible<

Because of limited number of TRFs; there are a just a fe

fre0uencies available for fre0uenc% hoppin)<

Internal Use▲

Baseband /re0uenc% 1oppin) Technolo)%


84/89

Baseband /re0uenc% 1oppin) Technolo)%

/or baseband fre0uenc% hoppin); each RU has a fi=ed fre0uenc%< The

baseband board fi)ures out the fre0uenc% of each timeslot over the

TD#& frame accordin) to frame 'o< 5/'6; mobile allocation table

5#&6; mobile allocation inde= offset 5#&IO6; and fre0uenc% hoppin)

serial 'o< 51S'6< Then; the baseband board sitches the data to the

correspondin) RU accordin) to the fre0uenc%; and receives uplin2

data from the correspondin) RU< The baseband fre0uenc% hoppin)

can be implemented b% DS-; or /S or /-*& on the B- board< &t

present; a DS- processes one fre0uenc% hoppin) )roup; hich can

have +. fre0uencies at most<

Internal Use▲

Special SDR /unction #CU#


85/89

Special SDR /unction 7 #CU#

#ulti$carrier Unite Combine 5#CU#6 is a product after ,*

OTSR is introduced into the *S# s%stem<

To meet comple= re0uirements for covera)e and hi)h$speed

movin); antennas are placed at multiple positions and multiple

an)les to cover each sin)le cell<

The SDR solves the problem about antenna e=tension and

repeaters b% distributin) the RRU remotel%<

Donlin2 si)nals of multiple RRUs are same< The uplin2 perform

selective combination; that is; #CU#<

Internal Use▲

TRF and Carrier


86/89

TRF and Carrier

Internal Use▲

'etor2 Covera)e of "=press Raila%s


87/89

'etor2 Covera)e of "=press Raila%s

Cell

+

Cell.

Celln

BBU

&

bi

s口

Internal Use▲

Technical /eatures


88/89

Technical /eatures

The donlin2 of multiple carriers are same si)nals<

TRFs of an RU should be processed on the same UB-*< &

U-B* can process +. TRFs at most<

Uplin2 si)nals are combined selectivel%; hich can improve

sensitivit%<

Puantit% of confi)ured RUs increases< Puantit% of confi)ured UB-*s increases<

内部公开▲


89/89

zxsdr bts and node b basic theories

Documents