While UE measures many different signals, the main ones are based on SSB and CSI- RS. Some measurements are reported by Layer 1 directly to the network. ![]() If filtered measurements meet reporting criteria, they're reported to the network. RRC does filtering on Layer 1 measurements. Most measurements are executed by Layer 1, although some may be at Layer 2. However, it's possible for a UE to measure uplink signals sent by other UEs. Typically, a UE measures downlink signals while network measures uplink signals. ![]() Measurements are done by both UE and the network, although this article focuses only on measurements performed by a 5G UE. Measurements help the UE and the network make decisions so that resources are managed better and ultimately quality of service is achieved. Measurements are essential to determine the health of any cellular system given the current configuration.
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