Connectivity is becoming central to almost every aspect of our lives. It has radically changed our lifestyle, enhanced our productivity, transformed the way we work and do business, and reduced the digital divide between developed and developing countries. As a result, demand for telecommunication technologies has exploded, touching almost every node of the infrastructure from the long haul to access networks, such as fixed broadband.
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Sidelink is a Device-to-Device (D2D) communication technology that broadens Long Term Evolution (LTE)/5G network coverage. This technology has been around since The Third Generation Partnership Project (3GPP) Release 12 when it was used to enable basic vehicular communication (Vehicle-to-Everything (V2X)) on LTE networks. Over the years, there have been incremental upgrades, such as Cellular Vehicle-to-Everything (C-V2X) sidelink support in 3GPP Release 14 and 5G support in Release 15, among others. Then, 3GPP Release 16 introduced 5G New Radio (NR) support, which is highly beneficial for 5G users looking for deployment flexibility on-premises. Now we arrive at 3GPP Release 17 and Release 18 (5G Advanced), both of which are bound to challenge the way you think of sidelink.