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Umts Wcdma Evolution 3g

Jun 04, 2018

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    UMTS EVOLUTION

    Prepared By:

    A.K.M.Asaduzzaman

    RF Optimization Engineer(RNO)

    Radio Network Planning & Optimization Department

    STAR LINK.

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    UMTS EVOLUTION

    UMTS First Evolved in 1999.Its released called as R99.

    R99: Voice 12.2 Kbps

    Data: 384Kbps for Both dl/Ul

    Next Release is R4(Due to increasing demand of data & fast Evolution of 3gIt is is not possible to Give released name as per Year name.)

    R4 : No change in data rate, Just some other change involved.

    R5 : In Release 5,The major change is high speed data.

    This 384 Kbps changed to 14.4 Mbps only for Dl, Ul will remain the same.

    R99 --- 384 KbpsR5 --- 14.4 Mbps HSDPA High speed Downlink Packet Access.

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    R6 : Release6 is basically EUL enhanced Uplink, Just like dlhere ul is alsoreduced to 2ms from 10ms.

    This Technology is basically HSUPA.

    HSUPA is having 5.76 Mbps Uplink However most of the implementationis 2Mbps.

    R7 : Release7 is HSPA+. IT is for both Ul & DL.HSPA+ is firstly launched inAusteria. Coding used here is 64 QAM for Dl

    1.DL 64 QAM 21 Mbps with MIMO we can Get up to 28 Mbps.

    2.Ul 16 QAM 11 Mbps

    R8 : Increased Band from 5Mhz to 10 Mhz .This whole band is combined& used combined & as a output we able to Get 54 Mbps.

    Ist Phase of LTE is Rel 8.

    R9 : Is Advance LTE.

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    LTE Vs WCDMA1. Freq BAND:UMTS : 5Mhz LTE : Scalable 4MHZ to 20MHZ .20MHZ is Best

    Sited

    2. MOD & CODING SCHEME:

    UMTS :WCDMA QPSK,16QAM LTE: OFDMA 64QAM

    3. DATA SPEED:

    R99 : 2Mbps , HSDPA :14.4 MbPS

    HSPA+: 28Mbps

    LTE: Up to 300Mbps

    4. ARCHITECTURE:

    LTE: No presence of RNC,Core system differ from ConventionalGSM

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    CORE SYSTEM CHANGES IN DIFF REL:

    R99:WCDMA R99 System Structure

    The CN is divided into CS and PS. The CS network units include MSC, VLR,

    and GMSC. The PS network units include SGSN and GGSN. The HLR, AUC,

    and EIR are common to the CS and PS.

    The RAN includes radio network controller (RNC) and WCDMA BTS (Node

    B).

    Besides, the CN PS connects with other PLMNs or PDNs through Gi and Gp

    interfaces, and the CS connects with fixed networks and other PLMNs

    through the PSTN.

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    to protect the investment of the operators, the

    network structure design of R99 fully considers thecompatibility of 3G with 2G. The CN inherits the NEentities defined in GSM/GPRS, enabling the currentnetwork to smoothly evolve to the 3G. Therefore, theCN almost remains unchanged. Corresponding

    interface protocols are added to some NEs to support3G service, and the original interface protocols arealso improved. However, the UMTS terrestrial radioaccess network (UTRAN, including RNC and Node B) isbased on the WCDMA technology defined in R99),and its change is revolutionary.

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    R4:

    WCDMA R4 System Structure

    As with the R99 network, the R4 network also consists of CN (including CS

    and PS) and RAN,. Compared with the R99 network, the CS of the R44

    changes, while the PS almost remains unchanged.

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    The CAMEL entities and related interfaces of the R4 network almost remain

    unchanged. The CAMEL function is enhanced based on R99; the definitionsof the interfaces and entities in the LCS architecture almost remainunchanged; the basic functions of the network entities that have the samedefinitions as those in the R99 network almost remain unchanged, so do therelated protocols. In R4, the CN consists of the following NE entities: (G)MSCServer, CSMGW, TSGW, RSGW, SGSN, GGSN, HLR/AuC, EIR, and so on.

    MAJOR CHANGE IN R4 is : The separation of control and Bearer: MSC to

    MGW&MSC Server.R4 new interface

    1.McMSC ServerMGWH.248 protocol2.NbMGWMGW

    ATM BearerAAL2,IP BearerRTP3.NcMSC ServerMSC ServerBICC protocol

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    VARIOUS INTERFACE IN R4 Rel

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    R5:WCDMA R5 System Structure

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    R5 inherits the definitions of the NE entities from R4, but theirfunctions are enhanced. The IMS is added to R5. Therefore, the

    corresponding interfaces between the basic network and the IMSare added. As shown in Fig in R5, the BSC is required to provide Iu-CS and Iu-PS interfaces, which is the major difference between theR5 network and the R4 and R99 networks. Besides, in R5, the HSSentity is added to replace HLR. Compared with the HLR, the HSSprovides more powerful functions and supports the IMS.

    in addition to the change to the basic structure, the IMS entity isalso added, namely, an IMS taking CSCF as the core is formed. Thepurpose of the IMS is to transfer various media streams (voice,data, image, and so on) over the IP network.

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    The IMS contains all the related entities necessary to the provision of the

    IP multimedia service

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    Thank you

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