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August 8, 2020 11:34 pm

'5G Just Got Weird'

SuperKendall (Slashdot reader #25,149) shared this review of the recent 5G standards codified by the 3rd Generation Partnership Project (3GPP) in Release 16 (finalized on July 3). "5G just got weird," writes IEEE Spectrum:4G and other earlier generations of cellular focused on just that: cellular. But when 3GPP members started gathering to hammer out what 5G could be, there was interest in developing a wireless system that could do more than connect phones... One of the flashiest things in Release 16 is V2X, short for "Vehicle to Everything." In other words, using 5G for cars to communicate with each other and everything else around them... The 3GPP standards bring those benchmarks into the realm of gigabytes per second, 99.999 percent reliability, and just a few milliseconds. Matthew Webb, a 3GPP delegate for Huawei and the other rapporteur for the 3GPP item on V2X, adds that Release 16 also introduces a new technique called sidelinking. Sidelinks will allow 5G-connected vehicles to communicate directly with one another, rather than going through a cell-tower intermediary... Tseng says that sidelinking started as a component of the V2X work, but it can theoretically apply to any two devices that might need to communicate directly rather than go through a base station first. Factory robots are one example, or large-scale Internet of Things installations. Some other "weird" highlights of the new 5G standards: "5G incorporates millimeter waves, which are higher frequency radio waves (30 to 300 GHz) that don't travel nearly as far as traditional cell signals. Millimeter waves means it will be possible to build a network just for an office building, factory, or stadium. At those scales, 5G could function essentially like Wi-Fi networks.""In past generations of cellular, three cell towers were required to triangulate where a phone was by measuring the round-trip distance of a signal from each tower. But 5G networks will be able to use the round-trip time from a single tower to locate a device.""Release 17 includes a work item on extended reality — the catch-all term for alternate reality and virtual reality technologies."

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