Sub-6 GHz: A Journey Through Wireless Evolution
The Ever-Evolving World of Sub-6 GHz: A Journey Through 3GPP Standards The world runs on connectivity. And for mobile devices, the foundation of that connectivity is built on standardized radio frequency (RF) technologies operating within specific frequency bands. While mmWave has garnered much attention for its high bandwidth potential, the "workhorse" of cellular networks remains in the sub-6 GHz range. This blog post delves into the fascinating evolution of sub-6 GHz standards as defined by the 3rd Generation Partnership Project (3GPP), highlighting key milestones and advancements that have shaped our mobile experience. Early Days: The Birth of UMTS and HSPA+ Before smartphones became ubiquitous, 3G networks based on Universal Mobile Telecommunications System (UMTS) emerged in the early 2000s. This marked...