Telecommunications, 5G & Next-Gen Networks
Mobile telecommunications have evolved across generations from 1G analog voice to 5G New Radio (NR), which delivers ultra-reliable low-latency communications (URLLC), enhanced mobile broadband (eMBB), and massive machine-type communications (mMTC) across sub-6 GHz and millimeter-wave (mmWave) spectrum. Standardized by the 3rd Generation Partnership Project (3GPP) and the International Telecommunication Union (ITU), 5G networks utilize massive MIMO (Multiple-Input Multiple-Output) antennas and network slicing. India launched commercial 5G services in October 2022 and unveiled the 'Bharat 6G Vision' document to participate actively in global 6G standardization under the ITU-R IMT-2030 framework. Fiber-to-the-home networks augment terrestrial wireless connectivity.
Key Concepts & Examination Highlights
- The International Telecommunication Union (ITU) established the IMT-2020 standard defining the performance requirements for 5G cellular networks.
- India launched its 'Bharat 6G Vision' document and the Bharat 6G Alliance in 2023 to drive next-generation telecommunication research.
- 5G New Radio operates across three frequency tiers: low-band (under 1 GHz), mid-band (1–6 GHz), and high-band millimeter-wave (24–40 GHz).