The UMTS TDD Standard Many of the biggest trends in telecommunications and technology point to the need for a ubiquitous, very high speed, low latency, packet based platform to provide broadband and other packet services to users at home, at work, or on the road. The first platform that meets this need with proven the most real-world traction is the TDD variant of the 3G UMTS standard, UMTS TDD (also known as TD-CDMA). First defined by the 3rd Generation Project Partnership (3GPP) in Release 99, the standard continues to evolve and move forward in the later releases based on input from operators and vendors. TDD is the best choice for provisioning ubiquitous broadband data and voice services not only because of the unmatched performance and economics of the solution, but its standards-based nature, and the growing market lead of the technology in commercial deployments. UMTS TDD... is live in commercial networks today is debugged, and working smoothly has excellent spectral efficiency has sensible economics has proven its ability to compete with DSL as a broadband service is a fully mobile broadband service with handoff and roaming.		The Global UMTS TDD Alliance The Global UMTS TDD Alliance is created and supported by members of the UMTS TDD community. The Alliance’s goal is to provide a forum for members to share their learnings and set requirements for future solutions, as well as to foster the market environment for solutions based on packet data implementations of the UMTS TDD standard. Specific goals of the Alliance are to: Offer a forum for information sharing among members Provide a resource for information on TDD solutions Support collaborative technology development Educate the market about the successful reference cases of TDD deployments Create greater awareness of TDD technology among analysts, press, ISPs, and service providers Educate stakeholders regarding economics and viability of TDD solutions For more info on the benefits of joining the alliance and our members, see our Members page.

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