LTE-FDD and LTE-TDD

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FDD-LTE (Frequency Division Duplexing) and TDD-LTE (Time Division Duplexing) are two different 4G variants that use an existing broadband spectrum differently. FDD-LTE uses different frequency bands for downloading and uploading, while TDD-LTE uses a band with a time offset for transmitting and receiving. Switching between uplink and downlink happens so quickly that it is not noticeable to the user. FDD-LTE is considered the modern 4G variant and is the most widespread worldwide.

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T-Systems & BMW launch Catena-X supplier-to-supplier meetup series

T-Systems and BMW are launching the Catena-X Supplier-to-Supplier Meetup Series, a monthly, regional platform designed by suppliers, for suppliers. These meetups foster open exchange, practical collaboration, and peer-to-peer learning across supply tiers, helping Tier 1 and Tier 2 suppliers accelerate Catena-X adoption, share real-world experiences, and build trusted networks for the future of the automotive value chain.

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Sven Löffler

Aug 28, 2025

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AIAG-CX-VIP2025: Catena-X Hub North America VIP Immersion event

AIAG has launched the Catena-X Hub North America, advancing the adoption of trusted dataspace technology for the automotive industry. At its VIP Immersion event in Detroit, industry leaders explored use cases like Product Carbon Footprint tracking, Quality Detection and Prevention, and Demand & Capacity Management. With T-Systems and other partners driving implementation, the hub sets the stage for secure, scalable, and collaborative data sharing to boost efficiency, compliance, and innovation across the automotive value chain.

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Chris S. Langdon

Aug 22, 2025

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T-Systems is now Catena-X-certified for Company Certificate Management

T-Systems has been officially certified by Catena-X for the Company Certificate Management use case—marking a key milestone for secure and scalable data collaboration in the ecosystem. With our Connect & Integrate solution, companies can get started quickly and in full compliance, without technical complexity. The fully Catena-X-compliant infrastructure (CX-0135) includes features like automated expiry alerts, revocation handling, and seamless integration with internal systems. This helps organizations manage digital identities more efficiently and build trust across company borders.

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Andrea Garcia

Jul 25, 2025