Airtel launched India’s first 4G LTE services in Kolkata yesterday. Airtel delivers the service using TDD technology, making it one of the few operators globally to launch a TD-LTE network. The majority of commercial LTE launches are still based on FDD technology, which begs the question: What impact will TDD have on the LTE landscape? Will TD-LTE get support from equipment manufacturers, or will it suffer a fate similar to that of WiMAX? What does it mean for operators? I believe that TDD will affect the entire mobile ecosystem. Here’s how:
Price parity between paired and unpaired spectra. Both paired and unpaired spectra will be viewed as media that deliver wireless service irrespective of the underlying technology; this will drive price parity between the spectra. The dichotomy between the FDD spectrum (used primarily for coverage) and the TDD spectrum (mainly for capacity) will disappear as technological advancements make it possible to achieve similar capacity and coverage on both spectra. Consequently, the “spectrum crunch” may diminish, as any spectrum will be satisfactory for the deployment of mobile broadband services.