rsc ran - lte technical overview - vivo presentation

LTE Technical Overview

LTE Technical Overview

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 1LTE Technical Overview AgendaLTE DefinitionNetwork EvolutionLTE Network ArchitectureLTE/SAE Protocol StackPhysical LayerEPS bearer & QOSMobility Management - LTE IdentifiersRBS 6000 PORTFOLIOSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 23/31/2015 2LTE Technical Overview

Lte definitionSlide title70 pt

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An acronym for Long Term Evolution, LTE is a 4G wireless communications standard developed by the 3rd Generation Partnership Project (3GPP) that's designed to provide up to 10x the speeds of 3G networks.

4G technologies are designed to provide IP-based voice, data and multimedia streaming at speeds of at least 100 Mbit per second and up to as fast as 1 GBit per second and QoS provisions permitting a transfer latency of less than 5 ms in the radio access network.

The goal is the redesign and simplification of the network architecture to an IP-based system.LTE DefinitionSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #The technology allows for speeds over 200Mbit/s and Ericsson has already demonstrated LTE peak rates of about 150Mbit/s. Also, LTE deployed IP-based core and transport networks that are easier to build, maintain and introduce services on.Since LTE supports hand-over and roaming to existing mobile networks, all these devices can have huge mobile broadband coverage combined with the 3G network.In summary, operators can introduce LTE flexibly to match their existing network, spectrum and business objectives for mobile broadband and multimedia services.

2015-03-25 4LTE Technical Overview For many years, voice calls dominated the traffic in mobile telecommunication networks. The growth of mobile data was initially slow, but in the years leading up to 2010 its use started to increase dramatically.

To illustrate this, this Figure shows measurements by Ericsson of the total traffic being handled by networks throughout the world, in petabytes (million gigabytes) per month.

The Need for LTESlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #To illustrate this, this Figure shows measurements by Ericsson of the total traffic being handled by networks throughout the world, in petabytes (million gigabytes) per month. The figure covers the period from January 2007 to July 2011, during which time the amount of data traffic increased by a factor of over 100.2015-03-25 5LTE Technical Overview 3GPP Long Term Evolution Country Map

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #

Network evolution Slide title70 pt

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 73/31/2015 7LTE Technical Overview GGSNSGSNRBS/BTS

Internet/IMSPSTN

BSCMSC

HLR

ControlUserBoth

Network evolution 2gSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 8LTE Technical Overview PSTN

RNCMSC-S

HLRMGW

Internet/IMSNodeB

GGSN

ControlUserBothSGSN

Network evolution 3gSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 9LTE Technical Overview MME

Other networks

HSSInternet/IMSeNodeB

SGW

PGWControlUserBothVoIP / SIP (VoLTE)eNodeB

eNodeB

X2

Network evolution lteSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 10LTE Technical Overview LTE networks has no CS domain!!

Voice over LTE (VoLTE)

Dual radio UE, always register with CDMA CS and voLTE CS at the same time (kills UE battery time)

Single radio UE, Circuit Switched Fall Back (CSFB)

Network evolution lteVoice solutionsSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #SGSN-MME 13B Delta Course_NRSPCA Support in S4-SGSN SGSN-MME 13A delta training 3/31/201521/038 13-3/FCP 111 464 Uen, Rev PA3 EAB/FBA/MP, Rev PA1 11SGSN-MME 13A delta training 3/31/2015EAB/FBA/MP, Rev PA1 11112013-09-05 CS Fallback - ConceptSubscribers is attached to LTE access, no CS-voice service available (i.e. IMS is not used as voice engine)

Fallback triggered to overlapping CS domain (2G/3G) whenever voice service is requested

Resumed LTE access for PS services after call completionLTELTELTELTEGSM/WCDMALTE island

PS

CS (+PS)

PSSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #3/31/20152011-10-19 12CSFB Introduction LTE TA to 2G/3G LA mapping

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #SGSN-MME 13B Delta Course_NRSPCA Support in S4-SGSN SGSN-MME 13A delta training 3/31/201521/038 13-3/FCP 111 464 Uen, Rev PA3 EAB/FBA/MP, Rev PA1 13SGSN-MME 13A delta training 3/31/2015EAB/FBA/MP, Rev PA1 13132013-09-05 LTEHigh level call flow (MT call)GSM / WCDMAS1-Ue-UuAbis / IubUm / UuS1-MMES11SGsA / IuCSBTSNodeBeNodeBMMEBSCRNCMMEMSSSGSNS3Gb /IuPSS4S&PGWRATchangeNc /NbInternetSGiBAIncoming call to the subscriber currently attached over LTE. Paging in LTE via SGs.UE fall back to GSM or WCDMAPage response and call setup over GSM or WCDMAMME orders the UE to release from LTE and execute CSFBPagingPagingUE reselects an LTE cell after call completion, time staying in GSM/WCDMA is implementation dependent eNodeB orders the UE to release from LTE to a target frequency and RAT using the RRC Connection Release with Redirect messagePagingSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #3/31/20152011-10-19 14CSFB Introduction Volte concept IMS Layered ArchitectureApplication layerSUPPORT SYSTEMS SCC-ASPGMMTASHSSCSCFIPWSBGMGCMGWSBGOSS-RCEMAEMMFIXEDBROADBAND MOBILENARROWBANDMOBILEBROADBANDPLMN/PSTN INTERWORKINGIMS/SIP/H.323 INTERWORKINGAP WUIGMConnectivity layerIMS COREApplicationsInterconnectionsControl layerSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2013-09-05 15Ericsson representation ofThe VoLTE Architecturee-UuIR.92eNodeBS&PGWP-CSCF /IMS AGwS1-UPCRFSGiGxRxI-/S-CSCFMMTel ASHSSCxISCShUtMwGmMbMMES1-MMES11S6aLTEHome NetworkServing NetworkE-UTRANEPC, Evolved Packet CoreEPS, Evolved Packet SystemIMSVoLTE, Voice over LTESlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2013-09-05 16VoLTE Using MMTel LZT1239661 R1C The figure illustrates the nodes and networks that represents the Ericsson implementation of the VoLTE architecture. This is the architecture discussed and described in this seminar.

LTE network architectureSlide title70 pt

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #SGSN-MME 13A delta training 3/31/2015EAB/FBA/MP, Rev PA1 17172015-03-25 LTE Technical Overview LTE Architecture

SAE - System Architecture Evolution -> GPRS EvolutionLTE: Long Term Evolution -> GSM/UMTS Evolution-No more RNC - RNC layers and functionalities moves in eNB/MME- X2 interface for seamless mobilitySlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #The LTE base stations are connected to the Core Network using the Core NetworkRAN interface, S1. This flat architecture reduces the number of involved nodes in the connections.

eNB All radio interface-related functions MME Manages mobility, UE identity, and security parameters. S-GW Node that terminates the interface towards E-UTRAN. P-GW Node that terminates the interface towards PDN.

2015-03-25 18LTE Technical Overview

MME control plane functions

eNodeB contains all radio access functions

- Admission Control - Schedule of UL/DL data

- Scheduling and

transmission of paging and system broadcast

- IP header compression - Outer ARQ (RLC) (error correction)

Serving Gateway

- Local mobility anchor for inter-eNB handovers - Mobility anchor for inter-3GPP handovers

- Idle mode DL packet buffering - Lawful interception

- Packet routing and forwarding

- Idle mode UE reachability - Tracking area list management - S-GW/P-GW selection

- Inter core network node signaling for mobility bw. 2G/3G and LTE

- NAS signaling

- Authentication

- Bearer management functions

PDN Gateway

- UE IP address allocation

- Mobility anchor between 3GPP and non-3GPP access

- Connectivity to Packet Data Network

LTE ArchitectureSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 19LTE Technical Overview

EPS network architecture

PDN (i.e. IMS or internet)

UEIMEI (equipment) IMSI (SIM card)GUTI (Globally Unique Temporary ID)User Plane IP

eNodeBRadio control and resource managementInter eNodeB communication via X2X2MMEMobility ManagementSession ManagementSecurity ManagementS1-MMESGWData forwardingData bufferingS1uS11HSSSubscription ProfilesSecurity informationMME (IP) addressfor UE

S5/S8SGiS6aPGWGateway between the internal EPC network and external PDNsUser IP address allocationUser plane QoS enforcementPCRFQoS rulesCharging rulesGxRxSelects SGW based on TASelects PGW based on APNDNSTA to SGW IP interrogationAPN to PGW interrogationSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 20In the EPC, the HSS (home subscriber server) is a central database that contains information about all the network operators subscribers. This is one of the few components of LTE that has been carried forward from UMTS and GSM.

The packet data network (PDN) gateway (P-GW) is the EPCs point of contact with the outside world. Through the SGi interface, each PDN gateway exchanges data with one or more external devices or packet data networks, such as the network operators servers, the internet or the IP multimedia subsystem. Each packet data network is identified by an access point name (APN) . A network operator typically uses a handful of different APNs, for example one for its own servers and one for the internet.

The serving gateway (S-GW) acts as a router, and forwards data between the base station and the PDN gateway. A typical network might contain a handful of serving gateways to cover a geographical region. Each UE is assigned to a single serving gateway, but the serving gateway can be changed if the mobile moves sufficiently far.

The mobility management entity (MME) controls the high-level operation of the UE, by sending it signaling messages about issues such as security and the management of data streams that are unrelated to radio communications. As with the serving gateway, a typical network might contain a handful of MMEs to cover a geographical region. Each UE is assigned to a single MME, which is known as its serving MME, but that can be changed if the mobile moves sufficiently far. The MME also controls the other elements of the network, by means of signaling messages that are internal to the EPC.

Charging Cobrana LTE Technical Overview interacting networks

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 21LTE Technical Overview LTE (Long Term Evolution)EPS (Evolved Packet System)EPC (Evolved Packet Core)PS (Packet Switched)CS (Circuit Switched)UE (User Equipment)MME (Mobility Management Entity)HSS (Home Subscriber Server)SGW (Serving GateWay)PGW (Packet data network GateWay)PCRF (Policy and Charging Rules Function)PDN (Packet Data Network)APN (Access Point Name)TA (Tracking Area)LA (Location Area)

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Lte/saeprotocol stack Slide title70 pt

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NAS sub-layer performs: Authentication Security control

Idle mode mobility handling Idle mode paging origination

RRC sub-layer performs: Broadcasting

Paging

Connection Mgt

Radio bearer control Mobility functions

UE measurement reporting & control

PDCP sub-layer performs:

Integrity protection & ciphering

UEeNode-BMMELte Control plane

NAS - Non-access stratumRRC - Radio Resource ControlPDCP - Packet Data Convergence ProtocolRLC - Radio Link ControlSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 24LTE Technical Overview LTE/SAE - Control plane

NASRRCPDCPRLCMACPHYRRCPDCPRLCMACPHYS1APSCTPIPL1/L2UEeNodeBMMEPGWSGWS1-MME

S1APSCTPIPL1/L2NASUDPIPL1/L2GTP-CUDPIPL1/L2GTP-CUDPIPL1/L2GTP-CUDPIPL1/L2GTP-CS11S5/S8

HSSS6aDiameterSCTPIPL1/L2e-UuSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #SGSN-MME 13B Delta Course_NRSPCA Support in S4-SGSN SGSN-MME 13A delta training 3/31/201521/038 13-3/FCP 111 464 Uen, Rev PA3 EAB/FBA/MP, Rev PA1 25SGSN-MME 13A delta training 3/31/2015EAB/FBA/MP, Rev PA1 25252015-03-25 LTE Technical Overview NAS (Non Access Stratum)3GPP TS 24:301S1AP (S1 Application Protocol)3GPP TS 36:413GTP-C (GPRS Tunnel Protocol v2)3GPP TS 29:274DiameterIETF RFC 3588 + 3GPP TS 29:272 (S6a/S6d specific)SCTP (Stream Control Transmission Protocol)IETF RFC 4960

Terminology and specificationsSlide title 44 pt





Physical sub-layer performs: DL: OFDMA, UL: SC-FDMA FEC (error correction)

UL power control

Multi-stream transmission & reception (i.e. MIMO)

UE eNode-B

PDCP sub-layer performs: Header compression

Ciphering

S-Gateway

RLC sub-layer performs: Transferring upper layer PDUs In-sequence delivery of PDUs Error correction through ARQ (Automatic Repeat request) Duplicate detection

Flow control

Segmentation/ Concatenation of SDUs

MAC sub-layer performs: Scheduling

Error correction through HARQ Priority handling across UEs & logical channels

Multiplexing/de-multiplexing of RLC radio bearersMME

LTE user plane

PDCP - Packet Data Convergence ProtocolRLC - Radio Link ControlMAC - Medium Access ControlSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 27LTE Technical Overview LTE/SAE - user plane

UEeNodeBPGWSGW

S1uS5/S8RLCMACPHYPDCPRLCMACPHYPDCPUDPIPL1/L2GTP-UUDPIPL1/L2GTP-UUDPIPL1/L2GTP-UUDPIPL1/L2GTP-Ue-UuSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #SGSN-MME 13B Delta Course_NRSPCA Support in S4-SGSN SGSN-MME 13A delta training 3/31/201521/038 13-3/FCP 111 464 Uen, Rev PA3 EAB/FBA/MP, Rev PA1 28SGSN-MME 13A delta training 3/31/2015EAB/FBA/MP, Rev PA1 28282015-03-25 LTE Technical Overview GTP-U (GPRS Tunnel Protocol v1)3GPP TS 29.281

Terminology and specificationsSlide title 44 pt





Physical layer Slide title70 pt

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 303/31/2015 30LTE Technical Overview LTE supports both Frequency-division duplex (FDD) and Time-division duplex (TDD) modes. All cellular systems today use FDD, and more than 90 per cent of the worlds mobile frequencies available are in paired bands. With FDD, downlink and uplink traffic is transmitted simultaneously in separate frequency bands. With TDD the transmission in uplink and downlink is discontinuous within the same frequency band.

E-UTRA uses orthogonal frequency-division multiplexing (OFDM) and multiple-input multiple-output (MIMO) antenna technology depending on the terminal category to support more users, higher data rates and lower processing power required on each handset.MIMOIn radio, multiple-input and multiple-output, or MIMO (pronounced as "my-moh" or "me-moh"), is a method for multiplying the capacity of a radio link using multiple transmit and receive antennas to exploit multipath propagation.[1] MIMO has become an essential element of wireless communication standards including IEEE 802.11n (Wi-Fi), IEEE 802.11ac (Wi-Fi), HSPA+ (3G), WiMAX (4G), and Long Term Evolution (4G). (http://en.wikipedia.org/wiki/MIMO)

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #Because LTE hardware is the same for FDD and TDD (except for filters)In general, FDD is more efficient and represents higher device and infrastructure volumes, while TDD is a good complement, for example in spectrum center gaps.

2015-03-25 31LTE Technical Overview Frequency bands for FDD and TDD:10 different FDD frequency bands and four different TDD frequency bands have been defined in 3GPP that can be used for LTE.

LTE physical layer (L1)FDD (separate channels for transmission and reception)TDD (transmission and reception on the same channel).Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE is defined to support flexible carrier bandwidths from below 5MHz up to 20MHz, in many spectrum bands and for both FDD and TDD deployments. This means that an operator can introduce LTE in both new and existing bands.

The first may be bands where it, in general, is easiest to deploy 10MHz or 20MHz carriers (for example, 2.6GHz (Band VII), AWS (Band IV), or 700MHz bands), but eventually LTE will be deployed in all cellular bands. In contrast to earlier cellular systems, LTE will rapidly be deployed on multiple bands.2015-03-25 32LTE Technical Overview

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 333/31/2015 33LTE Technical Overview Default BearerWhen LTE UE attaches to the network for the first time, it will be assigned default bearer which remains as long as UE is attached. Default bearer is best effort service. Each default bearer comes with an IP address. UE can have additional default bearers as well. Each default bearer will have a separate IP address. QCI 5 to 9 (Non- GBR) can be assigned to default bearer.

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #SGSN-MME 13B Delta Course_NRSPCA Support in S4-SGSN SGSN-MME 13A delta training 3/31/201521/038 13-3/FCP 111 464 Uen, Rev PA3 EAB/FBA/MP, Rev PA1 34SGSN-MME 13A delta training 3/31/2015EAB/FBA/MP, Rev PA1 34342015-03-25 LTE Technical Overview Quality class indicators

Default BearerDefault Bearers can only have Non-GBR QCI (5-9). Dedicated Bearers can have both GBR and Non-GBR QCI (1-9). Extended QCI 10 up to 255 will be possible in the future. 10-127 will be reserved for future standardizations and 128 to 255 will possible for operators to use as they see fit. Each QCI value is mapped to a specific DSCP (DiffServ Code Point). It should be done in the endpoints of each bearer.Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #SGSN-MME 13B Delta Course_NRSPCA Support in S4-SGSN SGSN-MME 13A delta training 3/31/201521/038 13-3/FCP 111 464 Uen, Rev PA3 EAB/FBA/MP, Rev PA1 35SGSN-MME 13A delta training 3/31/2015EAB/FBA/MP, Rev PA1 35Default Bearers can only have Non-GBR QCI (5-9). Dedicated Bearers can have both GBR and Non-GBR QCI (1-9). Extended QCI 10 up to 255 will be possible in the future. 10-127 will be reserved for future standardizations and 128 to 255 will possible for operators to use as they see fit.

352015-03-25 LTE Technical Overview DEDICATED BearerDedicated bearers provides dedicated tunnel to one or more specific traffic (i.e. VoIP, video, etc.). Dedicated bearer acts as an additional bearer on top of default bearer. It does not require separate IP address due to the fact that only additional default bearer needs an IP address and therefore dedicated bearer is always linked to one of the default bearer established previously. Dedicated bearer can be GBR or non-GBR (whereas default bearer can only be non-GBR). For services like VoLTE we need to provide better user experience and this is where Dedicated bearer would come handy. Dedicated bearer uses Traffic flow templates (TFT) to give special treatment to specific services

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #SGSN-MME 13B Delta Course_NRSPCA Support in S4-SGSN SGSN-MME 13A delta training 3/31/201521/038 13-3/FCP 111 464 Uen, Rev PA3 EAB/FBA/MP, Rev PA1 36SGSN-MME 13A delta training 3/31/2015EAB/FBA/MP, Rev PA1 36362015-03-25 LTE Technical Overview PDP Context vs. EPS Bearer

UEeNodeBMMEPGWSGWS1-MME

S11S5S1uDefault BearerPDN (internet)PDN(IMS)Default Bearer

Default Bearer PDN (gaming)APN = internet & IP address #1APN = gaming & IP address #2APN ims & IP address #3e-UuIf we were to look at the key parameters in these messages, we would see that both the UMTS procedures and the LTE procedures still use parameters like an Access Point Name (APN), IP address type, and QoS parameters. The only real difference between the two types of procedures is that there has been an optimization in LTE that reduces the number of signaling messages that need to be sent over the air.

LTE Attach/Default EPS Bearer will be equivalent to the UMTS Attach and then doing a Primary PDP Context establishment procedure. The Secondary PDP Context Activation is similar to the Dedicated EPS Bearer Setup procedure. So, there is a variation of a theme here, but not a significant difference.Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #SGSN-MME 13B Delta Course_NRSPCA Support in S4-SGSN SGSN-MME 13A delta training 3/31/201521/038 13-3/FCP 111 464 Uen, Rev PA3 EAB/FBA/MP, Rev PA1 37SGSN-MME 13A delta training 3/31/2015EAB/FBA/MP, Rev PA1 37The UE, MME and PGW is using the APN (Access Point Name) to identify to which PDN the default bearer shall be setup. Each PDN is identified by a specific APN. Each APN/PDN bearer can consist of a Default Bearer only or one Default Bearer together with one or more Dedicated Bearer. One specific APN and IP address per Default bearer. The Dedicated Bearers will belong to a default bearer and will use the same user plane IP address as the default bearer to which it belong.Default Bearers setups are initiated from the UE and Dedicated Bearer setup is initiated by the network

372015-03-25 LTE Technical Overview

Qos mapping on enbSlide title 44 pt















mobility management LTEIdentifiersSlide title70 pt

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 413/31/2015 41LTE Technical Overview LTE identifiersMCC8162432404856647280MNCMNCMCCTACENB-IDCELLIDMNCMCCMEGIMMECM-TMSIPLMN-IDECIGENB-IDECGIPLMN-IDMMEIS-TMSIGUMMEIGUTITAIMNCMCCMSINIMSIMSIN = Mobile Subscriber IdentityIMSI = International Mobile Subscriber Identity MCC = Mobile Country CodeMNC = Mobile Network CodePLMN-ID = Public Land Mobile Network Identity MMEGI =MME Group Identity MMEC = MME CodeMMEI = MME Identity GUMMEI = Global Unique MME Identity M-TMSI = MME Temporary Mobile Subscriber IdentityS-TMSI = Temporary Mobile Subscriber Identity GUTI = Global Unique Temporary Identity TAC = Tracking Area CodeTAI = Tracking Area Identity ENB-ID = ENodeB Identity CELLID = Cell IdECI = E-UTRAN Cell Identity GENB-ID = Global EnodeB IdentityECGI = E-UTRAN Cell Global IdentityPCI = Physical Cell IdentityPCISlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 42LTE Technical Overview EnodeB Identity (enb-id)MCCMNCENB-IDCELLIDPLMN-IDECIGENB-IDECGIManagedElement +-ENodeBFunction {Struct GlobalEnbId}Used to identify eNBs within a PLMN. The eNB Id is contained within the E-UTRAN Cell Identifier and can have the following lengths:short (20 bits), which allows addressing of up to 256 cells per eNB.long (28 bits), which allows addressing of one cell per eNB.eNBId = 0 { 0..1048575 } Parameter in the eNB.Unique in the network.Short (20 bits).

eNodeB Paramter in MOs:ManagedElement +-ENodeBFunctio +-EUtraNetwork +ExternalENodeBFunctio +-ExternalEUtranCellFDD [0..24] +-TermPointToENB [0..1]

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 43LTE Technical Overview EnodeB PLMN Identity (plmn-id)MCCMNCENB-IDCELLIDPLMN-IDECIGENB-IDECGIUsed to uniquely identify Mobile Network, i.e. Verizon Wireless. It is also part of the Global ENodeB Id (GENB-ID) that is used for identifying the node over the S1 interface. Consists of MCC + MNC Value is transmitted in the System Information (SI) messages and allows user equipment in idle mode to determine whether it should attempt to access the cell. eNBPlmnId = 0 { 0..16777215 } Parameter in the eNB.

ManagedElement +-ENodeBFunction {Struct GlobalEnbId} eNodeB Paramter in MOs:

Mobile Country Codes (MCC) - Mobile Network Codes (MNC)Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 44LTE Technical Overview Global EnodeB Identity (genb-id)MCCMNCENB-IDCELLIDPLMN-IDECIGENB-IDECGIUsed to identify eNBs globally. The Global eNB Identifier is constructed from the MCC (Mobile Country Code), MNC (Mobile Network Code) and the eNB-Id (eNB Identifier). MNC can have 2 or 3 digits.

ManagedElement +-ENodeBFunction {Struct GlobalEnbId} eNodeB Paramter in MO:Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 45LTE Technical Overview E-utran Cell identifier (eci)MCCMNCENB-IDCELLIDPLMN-IDECIGENB-IDECGIUsed to identify cells within a PLMN. ECI has a length of 28 bits and contains the eNB Identifier.Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 46LTE Technical Overview cellidMCCMNCENB-IDCELLIDPLMN-IDECIGENB-IDECGIcellId { 0..255 } RBS internal identity attribute for EUtranCell.

Must be unique in the RBS. Together with the Node ID and PLMN this will be a universally unique Cell ID.

Range 0-255.ManagedElement +-ENodeBFunction EUtranCellFDD eNodeB Paramter in MO:

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 47LTE Technical Overview E-utran Cell Global identifier (ecgi)MCCMNCENB-IDCELLIDPLMN-IDECIGENB-IDECGIUsed to identify cells globally. The ECGI is constructed from the MCC (Mobile Country Code), MNC (Mobile Network Code) and the ECI (E-UTRAN Cell Identifier).ECGI = PLMN-ID & (ENB-ID + CELLID)

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 48LTE Technical Overview Tracking Area IdentityThe TAI is constructed from the MCC (Mobile Country Code), MNC (Mobile Network Code) and Tracking Area Code (TAC)It is used to assist paging of the UE. It is transmitted in a SI message. tac { 0..65535 }This parameter identifies the Tracking Area Code (TAC) for the cell. eNodeB Paramter in MO:MNCMCCTACTAIManagedElement +-ENodeBFunction EUtranCellFDD ManagedElement +-ENodeBFunction TermToPointMME

Struct TrackingAreaIdentity

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 49LTE Technical Overview Physical Cell IdentityphysicalLayerCellIdGroup { 0..167 } Physical-layer cell identities are grouped into 168 unique physical-layer cell-identity groups, each group containing 3 unique sub identities. This attribute identifies the group.

This attribute together with physicalLayerSubCellId is used to calculate physical layer cell identity (see 36.211) which is sent as part of the system information (see 36.331)

physicalLayerSubCellId { 0..2 } Physical-layer cell identities are grouped into 168 unique physical-layer cell-identity groups, each group containing 3 unique sub identities. This attribute identifies the sub identity within the group.

This attribute together with physicalLayerCellIdGroup is used to calculate physical layer cell identity (see 36.211) which is sent as part of the system information (see 36.331)

physicalLayerCellIdGroup x 3 + physicalLayerSubCellId = physical cell identityThere are 504 unique physical-layer cell identities. The physical-layer cell identities are grouped into 168 unique physical-layer cell-identity groups, each group containing three unique identities.

3GPP definitions 36.211 section 6.11Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 50LTE Technical Overview RBS 6000 PORTFOLIOSlides from Product CatalogSlide title70 pt

CAPITALS


Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 51

RBS 6000 PORTFOLIOMacro vs Main-RemoteMacro: RBS 61xx (outdoor) and RBS62xx (indoor)- RU inside the cabinet ==> easy to replace- High TX power to compensate for feeder loss in downlink ==> high energy consumption- Need TMA close to the antenna for RX amplification to compensate for feeder loss in uplink

Main-remote: RBS63xx (outdoor) and RBS66xx (indoor)- RRU close to the antenna, connected to main unit via fiber ==> less easy to replace- Low TX power since feeder length is short ==> low energy consumption- No need for TMA since short feederSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 52A slide showing the family members. RBS 6201 is the high capacity indoor RBS, suitable for deployment at e.g. metropolitan indoor sites. RBS 6102 is the high capacity outdoor RBS, suitable for deployment at e.g. metropolitan rooftop sites, ground level sites and rural outdoor sites.RBS 6202 is the zero footprint indoor RBS which can be installed in any 19 inch rack. RBS 6102 is the high capacity outdoor RBS, suitable for deployment at e.g. metropolitan rooftop sites, ground level sites and rural outdoor sites.RBS 6601 is the zero footprint main-remote RBS, suitable for deployment at e.g. metropolitan indoor sites or for in-building coverage solutions.RBS 6301 is the outdoor main-remote RBS, suitable for deployment at e.g. metropolitan rooftop sites, suburban/rural sites or highway coverage sites.RBS 6302 is the super compact outdoor main-remote RBS, suitable for deployment at e.g. metropolitan rooftop sites, suburban/rural sites, highway coverage sites or for in-building coverage solutions.In addition the Remote Radio Units and the AIR units are shown in the picture.The following slides will describe the family members in more detail.

FLEXIBILITY AND MODULARITY

ClimateSite powerIntegrated backhaulRadio unitsGSM/WCDMA/LTERBS basebandand transport interfaceRBS 6102RBS 6201Macro: RBS 61xx (outdoor) and RBS62xx (indoor)Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 53The RBS 6000 macro cabinets constitute a complete site, with all equipment needed located inside the cabinet. Here we show the two high-capacity macro base stations, RBS 6102 and RBS 6201, as examples.Both these cabinets house the radio, baseband, site power, climate system and backhaul equipment needed. RBS 6102 can also be equipped with two strings of batteries.

The base stations consist of one or two radio shelves. The radio shelves house the radio units (shown in blue). The shelf also houses the digital units (DU) and transport interface unit (TCU), shown in light green.The power system is shown in orange in the slide. The power system is equipped with different units depending on power supply option.The climate system (dark green) varies depending on the base station model.All base stations have additional space for the installation of transport network equipment (shown in purple).

FULL FLEXIBILITY AND COMPATIBILITY

Powerand batteriesBackhaul optionRemote radio unit(RRUS)Antenna integratedradio (AIR)

Digital unit (DU)

Radio unit(RUS)

6102610162026201630266016301Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 54The RBS 6000 family is modular, flexible and compatible in the true sense of the word. The different digital, radio and miscellaneous units (shown in the upper part of the figure) can be used in almost any combination together with the seven different support systems (cabinets) shown in the lower part of the figure. This ensures that RBS 6000 can be used in every application scenario.FULL FLEXIBILITY AND COMPATIBILITY

2Select digital

3Select cabinet

6102610162026201630266016301

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Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 55The basic selection to make when deciding on a base station application is a three step process: RADIO, DIGITAL AND WHERE TO PUT IT. First select which radio units needed (RU for installation in macro cabinets, RRU or AIR for installation close to the antenna or integrated in the antenna itself). The second step is deciding which baseband capacity needed for your application (selection of digital units). Finally, decide where to put the equipment: is a macro cabinet preferred or shall main units in a main-remote configuration be used? Is the base station going to be deployed indoor or outdoor?

FULL FLEXIBILITY: MACRO ORMAIN-REMOTE OR BOTHRemote radio:RRU or AIRPowerCPRI

6102610162016202660163016302

Digital units

AIR: Antenna Integrated Radio RRU: Remote Radio UnitSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 56This slide shows that the distinction between macro base stations and main-remote base stations has more or less diminished. New configurations allow for a mix of these types of deployment, in that main unit equipment can be installed in macro cabinets. For these cabinets a combination of locally installed radio units (RUS) and remotely installed radio units (RRU or) is supported. This gives further freedom for the user to configure a base station site according to the requirements at the market in question.For the outdoor macro cabinets, a total of 18 radios (6102) or 9 radios (6101) can be supported (a mix of RUS and RRU/AIR). RBS 6201 and RBS 6202 can be used as a macro cabinet or as a main unit in a main-remote configuration.

Cabinets released as from July 2012 are fully prepared for supporting both macro and main-remote configurations. Study ongoing how to migrate the Installed base to support macro and main-remote.

The slide also shows the base stations capable of feeding power to the remote radios.

AN RBS FOR EVERY APPLICATION

RBS 6201

RBS 6101

RBS 6301

RBS 6302

RBS 6601

RBS 6102

RBS 6202Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 57This slide shows the versatility of the RBS 6000 family. With the various models of the RBS 6000, every relevant application is supported:RBS 6201 is the high capacity indoor RBS, suitable for deployment at e.g. metropolitan indoor sites.

RBS 6102 is the high capacity outdoor RBS, suitable for deployment at e.g. metropolitan rooftop sites, ground level sites and rural outdoor sites.

RBS 6202 is the zero footprint indoor RBS which can be installed in any 19 inch rack.

RBS 6102 is the high capacity outdoor RBS, suitable for deployment at e.g. metropolitan rooftop sites, ground level sites and rural outdoor sites.

RBS 6601 is the zero footprint main-remote RBS, suitable for deployment at e.g. metropolitan indoor sites or for in-building coverage solutions.

RBS 6301 is the outdoor main-remote RBS, suitable for deployment at e.g. metropolitan rooftop sites, suburban/rural sites or highway coverage sites.RBS 6302 is the super compact outdoor main-remote RBS, suitable for deployment at e.g. metropolitan rooftop sites, suburban/rural sites, highway coverage sites or for in-building coverage solutions.

HIGH CAPACITY INDOOR RBS 6201Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 58The RBS 6201 is the high-capacity indoor macro base station of the RBS 6000 family. The innovative design has made it possible to integrate a complete high-capacity site into a single cabinet. The cabinet contains two radio shelves and all power, transport network and supporting equipment needed.The two radio shelves in RBS 6201 can be equipped with virtually any combination of GSM, WCDMA and LTE units, which are available for all common frequencies. A single radio shelf can provide up to 3 16 GSM or 34 MIMO WCDMA or 3 20 MHz MIMO LTE, or a combination of these standards such as 3 x 8 GSM plus 3 x 20 MHz MIMO LTE.The flexible hardware architecture enables a variety of site deployments and consists of the following main components:Two radio shelves with a combination of radio units (RU), digital units (DU) and optional transport connectivity unit (TCU)Power shelf with power supply units (PSU) dimensioned for the specific siteSupport for up to 3U (AC version) or 6U (DC version) of space for transport network equipmentEnclosure including climate system

RBS 6201 can be powered with AC (120-250 V nominal) or DC (-48 V or +24 V nominal). In the slide, the AC version is shown.

PBC 6200 is the preferred system for providing 48 V DC power to RBS 6201 sites. Three alternative power system sizes are available to fit any site requirement perfectly.

There are a number of battery backup solutions for RBS 6201. BBU 6201, providing a battery capacity of up to 190 Ah, can be placed underneath the RBS. BBS 6201 is placed next to the RBS and provides up to 760 Ah.

RBS 6201 can also support connection of RRU or AIR units, thereby acting as a main unit in a main-remote configuration (see previous slides).

HIGH CAPACITY OUTDOOR RBS 6102Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 59The RBS 6102 is the high-capacity outdoor macro base station of the RBS 6000 family. The innovative design has made it possible to integrate a complete high-capacity site into a single cabinet. The cabinet contains two radio shelves and all power, transport network and supporting equipment needed.The two radio shelves in RBS 6102 can be equipped with virtually any combination of GSM, WCDMA and LTE units, which are available for all common frequencies. A single radio shelf can provide up to 3 16 GSM or 34 MIMO WCDMA or 3 20 MHz MIMO LTE, or a combination of these standards such as 3 x 8 GSM plus 3 x 20 MHz MIMO LTE.The flexible hardware architecture enables a variety of site deployments and consists of the following main components:Radio shelf with a combination of radio units (RU), digital units (DU) and optional transport connectivity unit (TCU)Power supply system for the total site needSupport for up to 3U of continuous space for transport equipment together with two strings of batteriesEnclosure including climate system

There are a number of battery backup solutions for RBS 6102. BBU 6102 is a unit placed underneath the RBS which gives 340 Ah. BBS 6101 can be placed next to the RBS 6102, giving a battery capacity of 340 Ah. BBS 6102 gives about twice the capacity of BBS 6101.RBS 6201 can be powered with AC (200250 V nominal) or DC (-48 V nominal).

RBS 6102 can also support connection of RRU or AIR units, thereby acting as a main unit in a main-remote configuration or in a hybrid solution with both RUS and RRUS/AIR (see previous slides).

ZERO FOOTPRINT INDOOR RBS 6202Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 60The RBS 6202 is a compact indoor macro multi standard base station intended for installation in 19 inches compatible enclosures.In RBS 6202 a straightforward cabinet design and an innovative modular building practice has been employed. This makes it possible to integrate one single radio shelf and a power distributing panel with software controlled circuit breakers.The radio shelf in RBS 6202 can be equipped with virtually any combination of GSM, WCDMA and LTE units, which are available for all common frequencies. A single radio shelf can provide up to 3 16 GSM or 3 4 MIMO WCDMA or 3 20 MHz MIMO LTE, or a combination of these standards such as 3 x 4 GSM plus 3 x 20 MHz MIMO LTE.

The flexible hardware architecture enables a variety of site deployments and consists of the following main components: Radio shelf with a combination of radio units (RU), digital units (DU) and optional transport connectivity unit (TCU) Power interconnect unit

RBS 6202 can be powered with DC (-48 V nominal).PBC 6200 is the preferred system for providing 48 V DC power to RBS 6202 sites. Three alternative power system sizes are available to fit any site requirement perfectly. RBS 6202 can also support connection of RRU or AIR units, thereby acting as a main unit in a main-remote configuration or in a hybrid solution with both RUS and RRUS/AIR (see previous slides).

SMALL OUTDOOR RBS 6101Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 61The RBS 6101 is the small outdoor macro base station of the RBS 6000 family. The innovative design has made it possible to integrate a complete high-capacity site into a single cabinet. The cabinet contains one radio shelf and all power, transport network and supporting equipment needed.The radio shelf in RBS 6101 can be equipped with virtually any combination of GSM, WCDMA and LTE units, which are available for all common frequencies. A single radio shelf can provide up to 3 16 GSM or 34 MIMO WCDMA or 3 20 MHz MIMO LTE, or a combination of these standards such as 3 x 8 GSM plus 3 x 20 MHz MIMO LTE.The flexible hardware architecture enables a variety of site deployments and consists of the following main components:Radio shelf with a combination of radio units (RU), digital units (DU) and optional transport connectivity unit (TCU)Power supply system for the total site needSupport for up to 4U of continuous space for transport equipmentEnclosure including climate system

There are a number of battery backup solutions for RBS 6101. BBU 6101 is a unit placed underneath the RBS which gives 190 Ah. BBS 6101 can be placed next to the RBS 6101, giving a battery capacity of 340 Ah. BBS 6102 gives about twice the capacity of BBS 6101.RBS 6101 can be powered with AC (200250 V nominal) or DC (-48 V nominal).RBS 6101 can also support connection of RRU or AIR units, thereby acting as a main unit in a main-remote configuration or in a hybrid solution with both RUS and RRUS/AIR (see previous slides).

ZERO FOOTPRINTMAIN-REMOTE RBS 6601Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 62RBS 6601 is a main-remote solution, optimized to deliver high radio performance for efficient cell planning in a wide range of indoor and outdoor applications. The main-remote RBS, in which each radio unit is located near an antenna (or integrated in the antenna itself), reduces feeder losses and enables the system to use the same high-performance network features at lower output power, thereby lowering power consumption and both capital and operational expenditure. Up to twelve remote radio units can be connected to a main unit to match any site requirements. The small, lightweight units are easily carried to site and offer simple and discrete installation where space and access are decisive issues.The main-remote solution is divided into a main unit (MU) and multiple radio units which are connected to the MU through optical fiber cables. The radio units can be either radio units installed close to the antenna (remote radio units, RRU) or they can be integrated in the antenna itself (antenna integrated radio unit, AIR).The RBS 6601 main unit is specified for indoor use.The RBS 6601 main unit is designed for indoor environments, preferably mounted in a 19-inch rack. Digital units for WCDMA, GSM or LTE can be housed in one RBS 6601 main unit.

Some of the key functions of the RBS 6601 main unit are: Power distribution of 48 VDC to the digital units Climate system including built-in fans and control part In addition to the above, the RBS 6601 main unit also provides a limited number of built-in customer alarm connections as well as connection to an external support alarm unit (SAU).

RBS 6202 can be powered with DC (-48 V nominal).Several alternative options are available for the powering of the RBS 6601 and its associated equipment. For indoor applications, the preferred solution is the 48 V site power system PBC 6200, which comes in three different sizes/capacities. RBS 6601 and other 19" installed equipment can be housed in the upper battery compartment of the PBC battery rack. For entire outdoor sites, SSC-02 is a preferred solution for 48 V DC powering and battery backup.

OUTDOOR MAIN-REMOTE RBS 6301Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 63RBS 6301 is an outdoor main-remote solution, optimized to deliver high radio performance for efficient cell planning in a wide range of outdoor applications. The main-remote RBS, in which each radio unit is located near an antenna, reduces feeder losses and enables the system to use the same high-performance network features at lower output power, thereby lowering power consumption and both capital and operational expenditure. Up to twelve remote radio units (RRU) can be connected to a main unit (MU) to match any site requirements. The small units are easily carried to site and offer simple and discrete installation where space and access are decisive issues.The mainremote solution architecture is similar to the other products in the RBS 6000 family. The main-remote solution is divided into a main unit (MU) and multiple remote radio units (RRU) which are connected to the main unit through optical fiber cables. The RBS 6301 is an outdoor carry-to-site multi standard main-remote base station with focus on the complete site. The RBS 6301 is made for easy carry-to-site installations. The compact size and low weight simplify passages through doors, tight corridors, staircases, elevators, man-holes etc. Ergonomic design, integrated handles and hoisting points further simplify the cabinet handing to its installation site. At site, the RBS 6301 is easily installed on the ground, or left/right/back side onto an equipment pole/mast/wall. RBS 6301 main unit is available in AC and DC versions. The same basic cabinet design is used not only for the AC and DC versions but also for the optional battery backup system BBS 6301.

RBS 6301 can be powered with AC (200250 V nominal) or DC (-48 V nominal).

SUPER COMPACTMAIN-REMOTE RBS 6302Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 64RBS 6302 is an outdoor convection cooled main-remote solution, optimized to deliver high radio performance for efficient cell planning in a wide range of indoor and outdoor applications. The main-remote RBS, in which each radio unit is located near an antenna, reduces feeder losses and enables the system to use the same high-performance network features at lower output power, thereby lowering power consumption and both capital and operational expenditure. Up to six radio units, which can be either remote radio units (RRUs) or antenna-integrated radio units (AIR) can be connected to a main unit (MU) to match any site requirements. The small units are easily carried to site and offer simple and discrete installation where space and access are decisive issues. The mainremote solution architecture is similar to the other products in the RBS 6000 family. The main-remote solution is divided into a main unit (MU) and multiple radio units (RRU or AIR), which are connected to the main unit through optical fiber cables. The RBS 6302 main unit is an outdoor convection cooled carry-to-site main-remote base station.RBS 6302 key features:Carry to site with a low weight and volume: 13 kg and 19.8 litersEasy and quick installation: pole, wall, back to back out from pole or wallIntegrated handle, stands for connector and sunshield protectionConvection cooling: silent operation, no scheduled maintenanceInterfaces for up to six remote radio unitsWCDMA capacity up to 3 x 4 or 6 x 2 with two interconnected main units

DUS 41GSMDUW 41

BASEBAND TECHNOLOGY EVOLUTIONDUGDULHigher capacityLTEWCDMAHigher capacityMulti standardDUW

Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 65The unprecedented growth of mobile broadband, combined with the predicted future evolution steps of LTE & WCDMA, makes it uneconomical and impractical to merge these technologies in the medium term. Therefore in the next generation of digital units we will continue to make dedicated solutions for WCDMA & LTE. GSM on the other hand will continue to grow (in numbers) and in the coming years there will be significant opportunities for GSM network modernization. Therefore as GSM is a mature technology, it makes sense to merge GSM with at least one of the other two standards. As LTE is a green field rollout (new network), the modernization of GSM is most likely to occur with this new network deployment, rather than together with the expansion of the existing WCDMA network to cope with mobile broadband.Therefore in the next generation of digital units we will merge the solution for LTE & GSM.

DIGITAL UNITS FOR LTE AND GSM DUL 20

LTEIP connectivity2.5 Gbps CPRI (Common Public Radio Interface (RBS- RU))20 MHz bandwidth per antenna (2x2 MIMO)10 MHz bandwidth per antenna (4x4 MIMO)DUG 20

GSMTDM2.5 Gbps CPRI12 TRX

Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 66These units are the current single standard units for LTE and GSM used in RBS 6000.The unit shown in the slide is the DUL 20. DUG 20 looks more or less the same, the only difference being the number of connectors. There is also another DUG unit, the DUG 10, which is only used together with the GSM SCPA radio RUG.Both units occupy 31 mm in the radio shelf of the base stations, making it possible to install two units next to each other.

The digital unit for LTE (DUL) contains the baseband, control and switching, as well as the S1 and Mub interfaces for LTE base stations. The DUL supports different time-varying traffic mixes over the LTE high-speed data interface. The baseband capacity is pooled independently of sectors and frequencies, and up to two baseband pools can exist (two DUL units) in the same node.The DUL stabilize the clock signal extracted from the transport network connection or optional external GPS equipment and uses it to synchronize the RBS.

The digital unit for GSM (DUG) can control up to 12 GSM carriers. If more than 12 transceivers are required, an additional DUG can be installed on the radio shelf and synchronized with the other DUGs in the cabinet. The DUG supports the cross-connection of individual time slots to specific TRXs and extracts the synchronization information from the Pulse-Code Modulation (PCM) link to generate a timing reference for the RBS. DUG has also a GPS interface.

DUL Connectivity Interfaces

(External alarms)Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #Power supply: -48vGE (Gigabit Ethernet) port: to core net.GE port: to blade PC.GPS sync signal input: 1PPS from GPS receiver.EC bus: to the cabinet.Test port: provide 3 RS232 port to 3 CPUs on board, test purpose.Inter-board cascading port: provide data exchange path between boards within a BBU.LED indicator: I: information; O: operational; F: fault; 10G/2.5G: status of optical portOptical port: provide optical CPRI interface to RRU, 10G/2.5G compatible by replacing optical module.2015-03-25 67LTE Technical Overview

DIGITAL UNITS FOR MULTI STANDARD DUS 41

GSM or LTEIP only10 Gbps CPRI10 Gbps External CoMPLTE 40 MHz bandwidth per antenna (4x4 MIMO)GSM 48 TRXDUS 31

GSM or LTEIP only5 Gbps CPRILTE: 20 MHz bandwidth per antenna (4x4 MIMO)GSM: 24 TRXSlide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 68In addition to the standard specific digital units (DUG, DUW and DUL), two types of multi standard digital units (DUS) are being introduced. The units, called DUS 31 and DUS 41, support the GSM and LTE standards. This means that these units can be used irrespective of GSM or LTE is being used. The units can be configured for either of the two standards. The DUS units occupy the same space in the cabinet as the DUG and DUL units.The two units DUS 31 and DUS 41 differ in terms of capacity. They share some common characteristics: GSM and LTE capable Three gigabit Ethernet ports (two optical and one electrical) GPS interfaceDUS 41 is equipped with one additional 10 Gbps CoMP port.DUS 31 has more or less double the capacity as the DUG and DUL units. DUS 41 offers close to another doubling in capacity compared with DUS 31.

DUS Connectivity Interfaces

Radio Interface Port A-F ( CPRI )Transmission Ethernet- electrical

Transmission Ethernet Optical

PowerGPSECLocal Maintenance (internal and external)

Inter DU Link ( provide communication between master DU and extension DU)

Transmission Ethernet Optical

Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #2015-03-25 69LTE Technical Overview THE RADIO UNITS

RUSRRUSAIR

In macro cabinetClose to the antennaAntenna integrated

Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 70The radio equipment employed in RBS 6000 is of three different types. The RUS units are intended for installation in traditional macro cabinets, i.e. RBS 6101, 6102, 6201 and 6202.

The RRUS units are used in main-remote configurations. They are installed as close to the antenna as possible in order to take full advantage of low feeder losses. They have up to now been used together with the dedicated main unit base stations RBS 6301, 6601 and 6302, but as we have seen in previous slides, the difference between macro and main-remote configurations will diminish. This is due to the fact that there will be possibility to let the macro base stations also act as main units.

The AIR units take the remote radio unit one step further by integrated all antenna tower equipment for one sector (antenna, RRU, ASC etc.) into one single unit. This gives further reduction in feeder losses and thereby higher radio performance.

MACRO DEPLOYMENT

Antenna integrated radioMacroMain-remote

Base stationBasebandRRU

AIRBasebandRUS

Slide title 44 pt




Do not add objects or text in the footer areaLTE Technical Overview | Ericsson Internal | 2015-03-25 | Page #LTE Technical Overview 2015-03-25 71This picture is another illustration of the different radio units and deployment of the units. Please see previous slide.

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