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Chapter 4 Background and Standardization of WCDMA

Chapter 4 Background and Standardization of WCDMA. 4.6 Creation of 3GPP 4.7 How does 3GPP Operate? 4.11 Beyond 3GPP Release ’99. 4.6 Creation of 3GPP. The standardization organizations involved in the creation of the 3rd Generation Partnership Project (3GPP) ARIB (Japan) ETSI (Europe)

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Chapter 4 Background and Standardization of WCDMA

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  1. Chapter 4Background and Standardizationof WCDMA

  2. 4.6 Creation of 3GPP 4.7 How does 3GPP Operate? 4.11 Beyond 3GPP Release ’99

  3. 4.6 Creation of 3GPP • The standardization organizations involved in the creation of the 3rd Generation Partnership Project (3GPP) • ARIB (Japan) • ETSI (Europe) • TTA (Korea) • TTC (Japan) • T1P1 (USA)

  4. Figure 4.2: the manufacturers and operators that are members of 3GPP through the respective standardization organization • 1999, CWTS (the China Wireless Telecommunication Standard Group) • joined 3GPP and contributed technology from TD-SCDMA, a TDD-based CDMA 3G technology already submitted to ITU-R earlier

  5. 3GPP also includes market representation partners • GSM Association • UMTS Forum • Global Mobile Suppliers Association • IPv6 Forum • Universal Wireless Communications Consortium (UWCC)

  6. 3GPP • the end of 1998 • initiated formally • early 1999 • detailed technical work was started • the end of 1999 • the first version of the common specification, Release ’99

  7. Within 3GPP, four different technical specification groups (TSGs) were set up • Radio Access Network TSG • the one most relevant to WCDMA technology • Core Network TSG • Service and System Aspects TSG • Terminals TSG • Radio Access Network TSG (RAN TSG) has been divided into four different working groups (WGs) (Figure 4.3)

  8. During 2000 • further work on GSM evolution was moved from ETSI and other forums to 3GPP • including work on GPRS and EDGE • a new TSG, TSG GERAN was set up for this purpose

  9. 4.7 How Does 3GPP Operate? • In 3GPP the work is organized around work items • define the justification(辯護;辯解) and objective for a new feature • For a smaller topic • only a single work item in one working group if the impacts are limited to that group

  10. For bigger items • such as HSDPA • there were work tasks done for each of the four RAN working groups • these work tasks were under a common work item, named HSDPA • For a larger topic • a feasibility study is needed before the decision of actually creating a work item

  11. Feasibility study • simply focus on the pain vs. gain ratio of the new feature • comparing the advantages and the resulting impacts on the equipment and existing features (backwards compatibility) • For each work item a reporter is nominated • who has the responsibility of coordinating the work and reporting the progress from WGs to TSG level

  12. At TSG level • every meeting (called a plenary（全體會議)) monitors progress every three months and makes any necessary synchronization between working groups and TSGs • If a work item is determined not to have reached the expected target • it may be altered or removed from the work program

  13. Once the work item is completed in all working groups • Change Requests (CRs) are brought to the plenary for approval • CRs contain the changes needed in each particular specification • once the plenary level approval is obtained, the specification will be updated to a new version with the changes resulting from the new feature

  14. The simplified illustration of the process from feasibility study to specification finalization is shown in Figure 4.4

  15. 4.11 Beyond 3GPP Release ’99 • Release 3 (Release ’99) • March 2001 • Release 4 (Release 2000) contains only minor adjustments with respect to Release 1999 • Release 4 specifications contain robust IP header compression suitable for cellular transmission to enable an efficient Voice over IP (VoIP) service

  16. March 2002 • Release 5 • bigger items included are High-Speed Downlink Packet Access (HSDPA) and IP-based transport layer • Release 6 • Multimedia Broadcast Multicast Service (MBMS) • HSDPA-related enhancements for uplink • radio resource management supporting measurements for beamforming(波束)

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