Samsung SMM-2CR0480800 User Manual

EPB

ED.

Smart MBS

System Des cr ip t ion /Int rod uc ti on

All text and images in this document are subject to the copyright of SAMSUNG Electronics Co., Ltd. This docum ent ma y not be r eproduc ed, distr ibut ed, or modi fied with out th e writt en permi ssion of SAMSUNG Electronics Co., L td.

Trademark

The marks appearing on this document are trademarks of SAMSUNG Electronics Co., Ltd, its subsidiaries, or affiliates.

This manual should be read and used as a guideline for properly installing and operating the product.

This m anual ma y be c han ged f or t he s yst em im prov emen t, s tand ard izati on an d ot her tech nic al r eas ons with out pri or notice.

If you need updated manu als or have any questions c oncerning the contents of the manuals, c ontact our Document

Center at the following address or Web site:

Address: Document Center 3rd Floor Jeong-bo-tong-sin-dong. Dong-Suwon P.O. Box 105, 416, Maetan-3dong

Homepage: http://www.samsungdocs.com

Yeongtong-gu, Suwon-si, Gyeonggi-do, Korea 442-600

INTRODUCTION

Smart MBS System Description

Purpose

This document introduces characteristics, features, and structure for Smart MBS Base Station of the Samsung Multi-Mo d al Syste m.

Docu ment Content and Organization

This document consists of 4 CHAPTERS, APPENDIX, and ACRONYMS.

Chapter 1. Samsung Multimodal System Abstract

Explains the following…

 Smart MBS System Introduction  Samsung Multimodal System Network Configuration  Samsung Multimodal System Feature

Chapter 2. Smart MBS Abstract

Explains the following…

 Smart MBS System’s Characteristics  Smart MBS ‘s Main Feature  Smart MBS ‘s Specification  Operat ion manual o n Backhaul Interface

Chapter 3. HW Architecture of Smart MBS

Explains the following…

 System Internal Structure  UADU (Universal Platform Digital Unit)  RRH (Remote Radio Hea d)  Thermal Radiation Structure

INTRODUCTION

Chapter 4. SW Architecture of Smart MBS

Explains the following…

 Smart MBS SW Structure  Loading Flow

ABBREVIATION

Provide s d efinition for acrony ms u se d in this document.

Conventions

Following symbols are used in this document. The information provided along with this symbol should be familiarized for safe operation/ha ndli ng of the system.

Additional Reference Provides reference in addition to the main contents.

Reference

Revi sion Hist ory

Rev. Date Note

1.0 2011.10 First Edition

II © SAMSUNG Electronics Co., Ltd.

Smart MBS System Description

INTRODUCTION I

Purpose ....................................................................................................... I

Document Content and Organization

......................................................................... I

Conventions

Revision History

Chapter 1. Samsung Multi-ModalSystem Abstract 1-1

1.1 Introduc tion to S mart MBS S ystem ............................................................................ 1-1

1.2

Samsung Multi-Modal System Network A rchitecture ......................................................... 1-4

1.2.1

CDMA System Network Architecture ........................................................... 1-5

1.2.2

LTE System Network Structure .................................................................. 1-6

1.3

Samsung Multi-Modal System Feature ........................................................................ 1-9

1.3.1

CDMA System Feature ........................................................................... 1-9

1.3.2

LTE System Feature ............................................................................. 1-10

Chapter 2. Smart MBS Abstract 2-1

2.1 Sma rt MBS System Desc rip tion ............................................................................... 2-1

2.1.1 Smart MBS CDMA System Feature

2.1.3 Smart MBS LTE System Feature

...................................................................................................... II

.................................................................................................. II

............................................................... 2-3

................................................................... 2-3

2.2

Smart MBS Main Feature ...................................................................................... 2-6

2.2.1 Physical layer Processing Feature

2.2.2 Call Processing Feature

2.2.3 IP Processing Feature

2.2.4 Convenient Operation and Maintenance Feature

2.3

Smart MB S Spe cif ic atio n ......................................................................................2-14

2.4 Backhaul Interface Operatio n

................................................................. 2-6

............................................................................. 2-9

.............................................................................. 2-10

............................................. 2-11

....................................................................................2-17

Chapter 3. Smart M BS’s Hardw are Stru cture 3-1

3.1 Internal Sy stem Architecture ........................................................................................ 3-3

3.1.1

CDMA Internal System Architecture ............................................................ 3-4

TAB LE OF CON TE N TS

3.1.2 LTE Internal System Structure .................................................................. 3-6

3.2 UADU(Universal Platform Digital Unit ) ............................................................................ 3-8

3.3 RRH (Remote Radio Head)

3.4 Cooling Mechanism

3.4.1

Digital Unit (DU) .................................................................................. 3-15

3.4.2

RRH (Remote Radio Head) .................................................................... 3-16

3.5 Interface structure

Chapter 4. Smart MB S Software A rchitecture 4-1

4.1 Smart MBS SW Architecture ........................................................................................ 4-1

4.1.1 CDMA System Basic SW architecture

4.1.2 LTE System Basic SW Architecture

4.2

Loading Flow .................................................................................................... 4-7

ABBREVIATION I

........................................................................................ 3-14

................................................................................................ 3-15

.................................................................................................. 3-17

............................................................ 4-1

............................................................... 4-4

IV © SAMSUNG Electronics Co., Ltd.

Smart MBS System Description

LIST OF FIGURES

Figure 1.1 Smart MBS System Schematic ..................................................................... 1-2

Figure 1.2 Samsung Multi-modal Netwo rk A rchitec ture Figure 1.3 CDMA Network Architecture o f Sam sung Multi-Modal System Figure 1.4 Samsung Multi-Mode System’s LTE Network Arch itecture Figure 1.5 CD MA System F u n ctiona l Structu re Figure 1.6 Function of E -UTRAN and EPC Figure 3.1 UADU Configuration - CDMA Single mode Figure 3.2 UADU Configuration - LTE Single mode Figure 3.3 UADU Configuration - CDMA + LTE dual mode Figure 3.4 RRH-C 2A (800MHz) Figure 3.6 Smart MBS CDMA Internal Block Diagram Figure 3.7 Smart MBS LTE’s Internal Block Diag ram Figure 3.8 UADU Configuration - CDMA Only Figure 3.9 UADU Configuration - CDMA Only(Two UADU) Figure 3.10 UADU Configuration - LTE Only Figure 3.11 UADU Configuration - CDMA+LTE Dual Mode Figure 3.12 UADU Configuration - CDMA+LTE Dual Mode(Two UADU) Figure 3.13 UADU’s FA N Structure Figure 3.14 UADU’s Cooling Mechanism

...................................................... 1-4

................................. 1-5

....................................... 1-7

............................................................... 1-9

................................................................. 1-10

...................................................... 3-2

.......................................................... 3-2

................................................. 3-2

............................................................................... 3-3

....................................................... 3-4

........................................................ 3-6

............................................................. 3-12

............................................. 3-13

............................................................... 3-13

.............................................. 3-13

.............................. 3-13

......................................................................... 3-16

................................................................... 3-16

Figure 3.15 HW Interface structure of UA D U (CD MA) Figure 3.16 HW Interface structure of UA D U (LTE) Figure 3.17 HW Interface structure of RR H -C2A Figure 4.1 Smart MBS C DMA Softwa re Architec tu re Figure 4.2 CDMA Common Software A rc h itecture Figure 4.3 CDMA OA M Sof tware Arc hitecture Figure 4.4 CDMA Call Proc essing S of tware S truc ture Figure 4.5 Smart MBS LTE Software A rchitec tu re Figure 4.6 Smart MBS' Loading Signal Flow

..................................................... 3-17

......................................................... 3-18

........................................................... 3-18

......................................................... 4-1

........................................................... 4-2

............................................................... 4-3

........................................................ 4-3

............................................................ 4-4

.................................................................. 4-8

TAB LE OF CON TE N TS

This page is intentionally left blank.

VI © SAMSUNG Electronics Co., Ltd.

Smart MBS System Description

Chapter 1. Samsung Multi-Modal

System Abstract

1.1 In trod uction to Smar t M BS S ystem

As mobile telecommunication technology has experienced rapid growth from “Analog Mobile Telecommunication(1 2000(3rd Generation)”, and into “LTE(4th Gener ation)”, voice service is being expanded into data servi ce. Especi all y, “wire/ wir eless hybr id ser vice”, “smar tphone ”, and “mobil e term inal” inc rea sed the d emands for the high speed wireless technology. Along with the enhancement of various mobile telecommunication networks, it is now becoming common for a single terminal to support different mobile technolo gies.

“Smart MBS System” is multi-mode base station that will satisfy such needs of mobile telecommunication market by integrating Voice(1X), Data(EVDO), LTE(4G) into a single base station equipment. Smart MBS System mounts common DU(Digital Unit) Platform, and RRH (per each frequency bandwidth) that operator can decide to configure it with either single or multiple mobile technology. Smart MBS System provides CDMA(w/ FDD), LTE(w/FDD), and TD-LTE(w/TDD).

Smart MB S System s up po rts the following tele communicatio n technologies.

 CDMA2000 1X/1X Advanced

Having C DMA2 00 0 1X a s a reference, int egr a t e the syst em ( w/ EVRC-B, RLIC, QOF, New RC algorithm) and the terminal(w/ (e)QLIC, MRD, New RC algorithm) to support 1X Advanced. As a result, voice capacity enhancement will be provided.

 CDMA2000 1xEV-DO Rev.A/Rev .B

Smart MBS supports CDMA2000 1xEV-DO Rev.A/ Rev.B s ervice and data servi ce of CDMA network.

 LTE (Lo ng T e rm Ev olu tion)

Samsung LTE System is a wireless network system that supports 3GPP LTE(Long Term Evolution)(a.k.a. LTE). It improves the existing 3GPP mobile telecommunication system(low data throughput, but high in cost) to a next generation wireless network system which provi des a high speed data service with minimal cost. Samsung LTE System supports “Downlink

Generation)” to “Digital Mobile Telecommunication(2nd Gener ation)” to “CDMA

Samsung Multi-ModalSystem Abstract

Samsung Smart

MBS

800MHz

(CDMA/LTE)

800MHz

CDMA/LTE)

OFDMA”(Orthogonal Frequency Division Multiple Access) with either FDD(Frequency Division Duplex) or TDD(Time Division Duplex), “Uplink SC(Single Carrier) FDMA”, and “Scalable Bandwidth(for various spectrum allocation)” to provide high speed data service. Also, high-end hardware is implemented to improve system performance and capacity that various high speed data feature/service can be provided.

Figure 1.1 Smart MBS Sy s tem S chematic

Samsung Multimodal System consists of f ollowing major featur es.

(

Enhance ment of CDMA Service Qualit y

In case “Smart MBS System” is operating CDMA, it provides “EVDO Rev.0/Rev.A and 1X Advanced” in order to improve the low throughput and limited voice capacity. In addition, “2branch Rx Diver si t y” and “4br a nch Rx d iver si t y” fea tu r e is pr ovid ed t ha t CDMA networ k co ver a ge i s enh anc ed f or versatile CDMA service.

(

기존 기지국 시스템

Ease of Expanding 4G Service

Legacy base stations consist of “3G CDMA 1X” for voice calls, “EVDO” for Data, “Battery”, and “Rectifier”. If 4G service was to be supplied, additional 4G base station equipment had to be installed. Nevertheless, “Smart MBS Base Station” only requires DU(Digital Unit) cabinet and Battery cabinet to provide existing service as well as 4G Service with minimal board replacements and software upgrades. Therefore, Smart MBS Basestations utilizes the cables, rectifiers, and batteries of the existing basestation system. Its ease of 4G installation will bring about efficient network implementation in the future commercial 4G service.

Green Solution

Smart MBS Basestation combines “3G BS equipment” and the “next generation 4G BS equipment” into a single Base Station, and also contains the rectifier within the DU cabinet . Meanwhi le, RR H(Remote Radi o Head) (TX/RX processing device) is separated apart from BS equipment for natural air cooling that it ca n minimize f o otprint, power usage, and ca rb on dioxide emissio ns.

Provides Eff i c i en t Backhaul O peration

Smart MBS Basestation provides functionality that can operate multiple telecommunication technologies into a single physical backhaul network for reducing backhaul expenses. In addition, it supports an efficient backhaul operation by providing a “per-technology” sectional network operation by logically separating the bac khaul, minimizi ng tr affic interference between different technologies.

About Smart M BS

Smart MBS is basestation of Samsung Multi-Modal System that will provide BTS,

RAS, and eNB whi ch wil l respectively serve the functionality of CDMA, and LTE. It is controlled by its respe ctive uppe r NE (BSC for CD M A, EPC for LTE) to handle CDMA/LTE calls. For detailed description of function and structure of

1-2 © SAMSUNG Electr onics Co., Ltd.

Smart MBS System Description

Smart MBS CDMA/LTE, please refe r to Chapter 2,3,4 of this document. For the function and struc ture of S m a rt MBS , please refer to the additional document.

Samsung Multi-ModalSystem Abstract

1.2 Sam sung M ulti-Modal System N etwor k A rchi te cture

Samsung Multi-Modal System is configured as shown in following Figure 1.2.

Figure 1.2 Samsung Multi-modal Network Architecture

As shown in Figure 1.2, Smart MBS system pla ys a r ole a s C DMA/ LTE basestati on in a Sa m sung MultiModal System network where CDMA and LTE systems co-exist.

When operat ing as CDMA, Smart MBS communica tes with BSC(CDMA cont r oll er ), and op er at or m ay use BSM(EMS of CDMA) to contr ol and manage CDMA port ion of Smart MBS.. When operating as LTE, it c ommunicates with EPC, and o p erator may use LSM -R(EMS or LTE) to co ntrol and manage LTE portion of Smart MBS.

Follow ing netwo rk structure describes the type of each technology supported by Smart MBS.

1-4 © SAMSUNG Electr onics Co., Ltd.

Smart MBS System Description

Proprietary

1.2.1 CDMA System Network Architecture

CDMA system network of “Samsung Multi-Modal System” consists of AN(Access Networks) for terminal access, VCN(Voice Core Network) for voice service, and PCN(Packet Core Network) for packet data service. AN consists of BTS, BSC( BTS cont roll er ), IP Network, Transport Network, and fina lly BSM to mana ge these compo nents. AN communica tes with VCN(MGW, MSC/MSCe) and PC N(AN-AAA, PDSN) to provide voice/data communication service to mobile subscribe rs.

MSCe

ESM

BSM

MGW

A2p

Proprietary

Smart MBS

IS2000, IS856

UE UE

BSC

A1p

A12

,A10,A11

Smart MBS

AN-AAA

Internet

PDSN

Figure 1.3 CDMA Network Architecture of Samsung Multi-Modal System

CDMA Network Architecture of Samsung Multi-Modal System(where Smart MBS is operated as CDMA BTS) is shown in Figure 1.3. Follow ing describes the feature per each CDMA network devices.

BTS (Base Transceiver Station)

BTS(CDMA Basestation) is a system that handles wireless interface with mobile terminals in accordance with CDMA2000 1X and 1xEV-DO standards. It receives data from mobile terminal and forwards it to Core network through BSC, and receives data from Core via BSC and forwards it to mobile terminal. In order to play a role as wireless transceiver, BS manages RF resources such as CA(Carrier Allocation), Walsh. Also, it supports RF(Radio Frequ ency) Scheduling and Pow er Control Functional i ty.

BSC (Base S tation Controll er)

Samsung Multi-ModalSystem Abstract

Through various backhaul interfaces, BSC coordinates with multiple BTS, and provides resources that are required for communicating with BTS. BSC communicates with VCN to process “Voice/Circuit Data Calls”, and coordinates with PCN to process “Packet Data Calls”. Also, it carries out operation/maintenance function in conjunction with BSM. It executes RLP(Radio Link Protocol) and SDU(Se lection and Dis tribution Unit) function that Hand-Off will be av ailable for mo bile termi nals. BSC also has PCF/(SC/MM) feature that “session control and mobility management function” is executed in 1xEV-DO network.

BSM (BSS System Manager)

BSM provides “operator interface” that operators can control and manage BCS and BTS. For Operation/Maintenance of BSC and BTS, BSM provides required commands such as “alarm/status/performance display”, “Configuration Management”, and “Parameter Control” of the system.

PDSN (Packet Data S erving Node) System

PDSN is a system which connects PCN to CDMA2000 1X (or 1xEV-DO), and it enables/maintains/disables the PPP to mobile terminal. PDSN particularly carries out functionality as FA(Fo reig n Age nt) for HA (Ho me Agent) t o provide mobile IP service.

AN-AAA (Acce ss Network-Authori zation, Authentication and Accounting)

AN-AAA is a server that performs authentication for subscribers in CDMA2000 1xEV-DO network. ANAAA executes authentication based on NAI(Network Access Identifier), and manages the “mapping data” of IMSI and terminal NAI.

MSC (Mobile service Switching Center)/MS Ce (MSC emulator)

MSC(e) is a system component which provides “switching” role in CDMA2000 network. It provides additional s ervice s by connecting s u bscrib ers to additional equip ments or other netw ork(PSTN )

MGW (Medi a Gateway)

MGW is an equipment that provides “bearer gateway functionality” (Media conversion and handling) in a CDMA 2000 network. MGW exchanges PCM data(which is based on TDM) with PSTN, and exchang es voi c e f rame(which i s based on IP) w i t h BS C.

1.2.2 LTE System Network Structu re

LTE network of Samsung Multi-Modal System incorporates Basestation(eNB), packet core(EPC), and LSM/(MSS). The system consists of multiple basestatio ns(eNB: Evolved UTRAN Node-B) and Gateway (EPC: Evolved Packet Core, MME, S-GW/P-GW), and provides functionality for UE to connect to ext e rnal netw o rk . In addition, LTE system provides LTE System Manager(LSM) and Self-Optimization Server Feature for Operation/Maintenance of Basestation(eNB).

1-6 © SAMSUNG Electr onics Co., Ltd.

Smart MBS System Description

EMS

LSM-C

EPC

P -GW

O CS

P CRF

P DN

HSS/SPR

MMES -GW

TL1

SN MP/F TP/U DP

X2-C

X2-U

S1MME

S1-U

S5/S8

S11

S10

S6a

EMS

LSM-R

MSS

RMI

Smart MBS

Figure 1.4 Samsung Multi-Mode System’s LTE Network Architecture

LTE network architecture of Samsung Multi-Modal System, where the Smart MBS is oper at ed as LTE’s Basestation(eNB), is as shown in the Figure 1.4, and following features are available for each LTE network equipment.

eNB (Evolved UTRAN Node-B)

LTE Basestation(eNB) is a system located between UE and EPC, and it handles the packet calls by connecting to UE wirelessly in a ccordance wi th “LTE Air standard ”. eNB execut es vari ous func tions including Tx/Rx of Wireless signal, Modulation/Demodulation of packet traffic, packet scheduling for effi ci ent us e of RF res our ce s, HARQ (H ybr id A ut oma ti c Repe a t Reque st) and ARQ (Automati c Repea t Reque st) p roces s, PDC P(Packe t Data C onvergenc e Pr otoc ol) of c ompr essed p acke t hea der, and wir eles s resourc e control. Also , it s ynchronizes w ith EPC to e xecute Handov er.

EPC (Evolved Pack et Core)

EPC is a system between Basestation(eNB) and PDN. It incorporates MME(Mobility Management Entity) , S -GW (Serving Gateway), and PDN Gateway(P-GW). MME handles control message via basestation(eNB) and NAS signaling protocol, and management of mobility for terminal, manageme nt of Tracki ng Are a List, bearer and session management. S-GW pla ys role as “anc hor” on s ubscriber plane bet ween 2G, 3G Access s ystem, and LTE system . It manages/modifies packet transmit laye r of downlink/uplink data . P-GW allocat e s I P Address to UE, plays role as “anchor” for mobility between “LTE System” and “non3GPP Access Systems”, manages billing charges for different service levels, and handles

Samsung Multi-ModalSystem Abstract

management /modific ation of the throughput r ate .

LSM (LTE System Manager)

LSM provides a synchronized interface for operat or that O peration/ Maint enance ca n be perfor med for Basestaion(eNB) by operator. It also provides Software management, configuration management, performance management, and alarm management features.

HSS(Home Subscriber Server)

HSS is a database management system that stores the parameter and geographical data of entire subscribers. HSS manages important data including access availability, basic service, and additional service of the subscriber. It also performs “Rooting Feature” for subscribers receiving calls.

MSS(Master SON Server)

MSS is a hi gher node of Local SON server. It synchronizes with Local SON Server to optimize the synchronization in regards to Multi-LSM. MSS is a function that is compatible with the operator OSS, and the av ailability of this f u nc tion will b e decide d after discus s io n w ith operator.

PCRF(Policy Ch ar ging & Rule Function)

PCRF may generate policy rule in order to apply “QoS/Billing Policies per each Service Flow” dynamically. Or it may generate Policy rule tha t is applied uniformly to multiple Service Flow. Since I P ed ge contains PCEF(Policy and Charging Enforcement Function), Policy Rules(received from PCRF) can be applied per each Service Flow.

OCS (Online Charging System)

If subscribers (with Online Billing information) makes call, subscriber’s billing information is sent/received.

CG (Chargi ng Gateway)

Sto re s the g enerated billing data, and pro vides b illing data pe r each subs criber.

Smart MBS System Description

Abis

BSC

BTS

MAC

PHY

IP Packet Forwarding

Packet Classification

HARQ

Voice Handler

SUA Handler

AN-AAA Client

SC/MM

A11 Handler

A10 Handler

RLP Handler

1XVoice

1xEV-DO

Paging Controller

IP Packet Forwarding

Packet Classification

ARQ

1.3 Samsung Mul ti -Modal System Feature

Following is the feature supported by each mobile tec hnology of Samsung Multi-Modal System.

1.3.1 CDMA System Feature

Following Figure shows CDMA system(BSC, BTS)ba s e d on 1X/1xEV-DO.

Figure 1.5 CDMA System Fu nc tional Struc ture

BSC works with voice cor e equipments (MSCe, MGW) to manage signaling and bearer process for voice servic e. In BSC, SUA Hand ler is res pons i bl e for Al p si gna ling with MSC e, and Voice Handl er sends the voice bearer traffic to MGW. In addition, it works with PDSN for 1X data and 1xEV-DO data service. A10 Hand ler mana ges the bear er tr affi c of such data 1X Da ta and 1xEV-DO Data ser vice. A 11 Handl er manages signaling for data service. RLP Handler manages ARQ feature for data communication. For Authentication of 1xEV-DO terminal, AN-AAA client is responsible for synchronization with ANAAA. SC /M M executes s es sion control a nd mob ility management for 1xEV-DO.

BTS is respons i ble for Radi o Re s ource Control and terminal co mmu ni cation. Through CAI( Com m on A ir Interface), it provides featur es such as high speed data service, mul timedia service, new hand off, in accordance with standards defined in 3GPP2 C.S0024-0_v4.0, 3GPP2 C.S0024-A_v3.0, and 3GPP2

C.S0024-B_v3.0, 3GPP2 C.S0063-B_v1.0

Samsung Multi-ModalSystem Abstract

EPC

eNB(E-UTRAN)

RRC

PDCP

RLC

MAC

PHY

MME

NAS Security

Idle State Mobility

Handling

EPS Bearer Control

S-GW

Mobility Anchoring

P-GW

UE IP address

allocation

Packet Filtering

Inter Cell RRM

RB Control

Connection Mobility Control

Radio Admission Control

eNB Measurement Configuration & Provision

Dynamic Resource Allocation (Scheduler)

1.3.2

LTE Sys tem Feature

Following Figure shows functional separation between eNB, MME, S-GW, P-GW of E-UTRAN in accordance with 3GPP standard. Generally, eNB manages “Connected mode” at AS(Access Stratum) level. MME manages Idle mode terminals in NAS(Non-Access Stratum) level. Both S-GW and P -GW performs “user data man a gem ent” and provide the “li nk to foreig n network”. Follow ing dis p lays the functio nality of eNB, MME, S-GW, and P-GW.

Figure 1.6 Function of E-UTRAN and EPC

eNB

eNB manages E-UTRAN( Evo lve d U TRAN), the wireless access network of LTE system. Multiple eNB are connected v ia X2 interface, and these eNB are connected to EPC(Evolved Packet Core) via S1 interface. Wirele ss protocol la yer of eNB can be di vided int o Layer1 , Layer2, and Layer 3. Layer 3 contains RRC layer, Layer 2 contains three layers(MAC layer(sublayer), RLC layer, PDCP layer) where each layer execu tes an inde pendent pr ocess. RRC la yer belong s to layer 3 of the wir eless pr otocol. Gene rally, RRC Layer is responsible for maintenanc e and control of RB(Radio Bea rer), RRC c onnectivi ty, and Exchange of System Data. Meanwhi l e, PDCP layer is responsible for head er compressi on of IP packet, security featur es like “cipherin g/integrity check”, and “selecti ve transmission feature” which can increase the efficiency of “radio resource”

RLC Layer is resp onsible a ) for segmentation and reassem bly at MAC Layer for data which was received from PDCP layer; b) of restoring the tx failure(at lower level) via retransmission (ARQ); and c) of reordering which can be caused because by (HARQ in MAC layer) For ea ch bearer, MAC Layer distributes RF resour ces according to priorit y, multiplexes the dat a received

Smart MBS System Description

from various “Upper Logical Channels”, and performs HARQ(Hybrid ARQ).

MME(Mobility Management Entity)

MME works in conjunc tion with E-UTRAN( eNB) t o hand le “S1-AP signaling messag e”(of SCTP base; used to control connecti on between MME and eNB) AND “NAS Signaling message” (of SCTP base; used to control mobility and connection between terminal and EPC.) In addition, it works in conjunction with HSS to obtain subscriber information, modification, and authentication. It can work in conjuncti on with SGW, as utilizing GTP-C prot ocol, to all ocate bear er path ( for data routing and forwar ding, rel ease, and modification) It can also work in conj unction wit h SGSN(of 2G, 3G) and M SC to provide Mobility, HO, CS fa llback, and SMS service. MME can handle mobility, idle mode UE reachability, TA list management, P-GW/S-GW selection, authentication, and bearer management. MME supports mobility for handover between eNB, and supports handover between MME. Also, SGSN selectio n is sup ported when it hands over to 2G, 3G, or 3GPP ne t work.

S-GW(S erv i ng Gat eway)

S-GW plays role as mobilit y anchor when handover is execut ed between eNB, and 3GPP. As a supported function, packet data is “Routed”, “Forward ed”. Billin g Policy can be configured differently per each of UE, PDN, and QCN. It can manage and modify the “packet transport layer” of the uplink/datalink data. In addi tion, S-GW supports GTP and PMIP protocol in conjunction with MME, P-GW, and SGSN.

P-GW(PDN Gateway)

P-GW can execute Billing/Bear er policy in conj unc ti on wit h PCRF, and per it s pol i cy. Billin g, QoS , can be managed/modified per service level. P-GW provides Packet filtering feature per each subscriber, and allocates IP address to each UE. P-GW can manage/modify packet transport layer of the downlink Data.

Samsung Multi-ModalSystem Abstract

This page is intentionally left blank.

Smart MBS System Description

Chapter 2. Smart MBS Abstract

2.1 Smart MBS System Description

Smart M BS is the Bas es ta ti on of Sam sun g Mult i-Modal System. It is managed by packet core (either BSC, ACR, or EPC), and makes call to terminal to create CDMA /LTE links.

Smart MBS interfaces with UE via either CDMA(3GPP2 CDMA2000 1X Advanced and 1xEV-DO Rev.0/Rev.A (20110408)), LTE(3GPP LTE Rel.8/9). It provides broadband high speed data service and multimedia services. In order to implement this, Smart MBS can perform Modulation/Demodulation (for voice or packet traffic), assign S cheduling and Wireless Ba ndwidth (for effici ent use of RF r esources a nd to guar antee QoS), handle ARQ(Automatic Repeat request), perform ranging feature, provide connection control feature (for sending Smart MBS information and enable/maintain/disable the call), Synchronize BSC/A CR /EPC, prov ides Power Co ntrol, and e xecutes system ope ratio n manageme nt.

By Fast Ethernet/Gigabit Ethernet backhaul, Smart MBS syn chronize the control station to transceive reliable control sig nal and traffic signal.

Smart MBS is separated into UADU(Universal Platform Digital Unit, an indoor DU) and the RRH(Remot e Rad io Hea d, a c ombine d RF uni t). UADU is mounted in the outdoor DU cabinet(along with the re ctifier) to support outdoor e nv ironment.

UADU is a digital component for 19” shelf. It can be mounted onto either indoor or outdoor 19 inch commer cial ra ck, and one UAD U can provide the following maximum capacity. Based on operator’s setup, it can be operated as omni type or sector type.

- CDMA 1X / EVDO : Max 4Carrier/3Sector

- L TE (FDD) : Max 1Carrier/3Sector

RRH is RF component that is built into a single module. It can be mounted o nto Walls, Poles, or Stands in outdoor environments.

Depending on Frequency bandwidth and duplexing ty pe, RRH can be c lassified into follow ing types.

- RRH-C2A: 800MHz Cellular band, 2Tx/2Rx RF path

Smart MBS Abstract

Smart MBS has other features provided as below.

Common Pl atform DU/RRH

Digital boards of each wireless technology, to be mounted in Smart MBS, share the common DU platform. Therefore, different boards(for multiple technology) may be mounted in a single DU, and operator can mount up to 4 D U in ou td oor DU cabinet to implement va rious configuration. RRH of Smart MBS can simultaneously support multiple technologies in the same duplexing type with the same b andwidth.

RRH(Remote Radio Head) separated fr om DU(Dig ital Unit)

In order to provi de ea se of ins ta llati on and vari ous network st ructure, Smar t MBS has separated RRH from DU. Between RRH and DU, a fiber optic ‘Baseband I/Q and C&M’ interface, based on CPRI( Comm on Publi c Radi o Inter face ), is used t o send/recei ve “dat a tra ffic signal” an d “OAM data”. DU and RRH gets -48VDC f rom rectifier inside the outdoo r DU cabinet.

Provide Easy Installation

RRH integrates optic-sync component and RF signal processor, and is a small & light weight single module. RRH can be mounted onto Walls, Poles, or Stands. In addition, distance between RRH and Ant enna i s mini m iz ed th at RF si gna l l oss( ca used b y Feeder Line ) i s d ecr eas ed. The r efor e, i t can pr ovid e improved RF pe rformance whe n compared to Basestation that has Digital Unit and RF Unit alto g ether .

Natural Cooling Mechanism

RRH(Remote Radio Head) may be installed in outdoor environment, and its thermal-dynamic design efficiently dissipates heat without requirement of additional cooling mechanism. Also, no maintenance cost is required for RRH cooling.

Feature for Loop-Back Test of the line betw een DU and R RH

In order to check functionality of the “Base-band I/Q and OAM interface” between DU and RRH, Smart MBS provides Loop-back Test.

Provides Rem ote Fir mware D ownloading

RRH may be rep laced with firmware to enhance service and upgrade new featu res. At this time, Sit e vi sit is not required as firmware can be downloaded from basestation operation server (such as BSM/WSM/LSM-R). Ther efore, ope ra tor can m inimiz e the si te visit, redu ce the ma intenanc e cost, and easily operate the system.

Provides Monit or ing P or t.

Through debug port of RRH, operator c an monitor t he information abo ut the u nit.

Support for Smooth Migration

Smart MB S can provide migration f rom CDMA to 4 G LTE )wireless telecommunication by either adding

+ 51 hidden pages

Samsung SMM-2CR0480800 User Manual

INTRODUCTION

Purpose

Docu ment Content and Organization

Chapter 1. Samsung Multimodal System Abstract

Chapter 2. Smart MBS Abstract

Chapter 3. HW Architecture of Smart MBS

Chapter 4. SW Architecture of Smart MBS

ABBREVIATION

Conventions

Revi sion Hist ory

TABLE OF CONTENTS

1.1 In trod uction to Smar t M BS S ystem

Enhance ment of CDMA Service Qualit y

Ease of Expanding 4G Service

Green Solution

Provides Eff i c i en t Backhaul O peration

1.2 Sam sung M ulti-Modal System N etwor k A rchi te cture

1.2.1 CDMA System Network Architecture

BTS (Base Transceiver Station)

BSC (Base S tation Controll er)

BSM (BSS System Manager)

PDSN (Packet Data S erving Node) System

AN-AAA (Acce ss Network-Authori zation, Authentication and Accounting)

MSC (Mobile service Switching Center)/MS Ce (MSC emulator)

MGW (Medi a Gateway)

1.2.2 LTE System Network Structu re

eNB (Evolved UTRAN Node-B)

EPC (Evolved Pack et Core)

LSM (LTE System Manager)

MSS(Master SON Server)

1.3 Samsung Mul ti -Modal System Feature

1.3.1 CDMA System Feature

LTE Sys tem Feature

Chapter 2. Smart MBS Abstract

2.1 Smart MBS System Description

Common Pl atform DU/RRH

RRH(Remote Radio Head) separated fr om DU(Dig ital Unit)

Provide Easy Installation

Natural Cooling Mechanism

Feature for Loop-Back Test of the line betw een DU and R RH

Provides Rem ote Fir mware D ownloading

Provides Monit or ing P or t.

Support for Smooth Migration