Long Term Evolution Time Division Duplex (LTE TDD) is the version of LTE that uses the TDD modulation scheme in unpaired spectrum, whereby the same frequency channel is used for both downlink and uplink communication and signals are timed to enable smooth delivery of data. In contrast, LTE uses frequency division duplex (FDD) in paired spectrum, with a separate channel for uplinks and downloads.
FDD spectrum has traditionally been used for cellular voice and data services. TDD-based services are typically considered as more spectrum-efficient and better suited for "bursty" data services.
The most popular frequencies for which LTE TDD is being considered are 2.3GHz and 2.5GHz. The two most significant markets for LTE TDD developments are China and India. China Mobile is the chief proponent of LTE TDD.
Light Reading founder Steve Saunders recently visited the University of North Carolina Charlotte (UNCC) where Cisco's Tetration application is providing data center analytics, simplifying SDN, helping with cloud migration and overseeing white-list security policy.
A CSP's digital transformation involves so much more than technology. Crucial – and often most challenging – is the cultural transformation that goes along with it. As Sigma's Chief Technology Officer, Catherine Michel has extensive experience with technology as she leads the company's entire product portfolio and strategy. But she's also no stranger to merging technology and culture, having taken a company — Tribold — from inception to acquisition (by Sigma in 2013), and she continues to advise service providers on how to drive their own transformations. This impressive female leader and vocal advocate for other women in the industry will join Women in Comms for a live radio show to discuss all things digital transformation, including the cultural transformation that goes along with it.