name: RSU
full_form: Roadside Unit
context: It is relatively hard to provide estimates for the service area dimension. One reason is that it depends on the placement of the base station relative to the RSUs. Also, the RSUs can, in principle, act as relay nodes for each other. The service area dimension stated in table 7.2.3.2-1 indicates the size of the typical data collection area of an RSU (2 km along a road), from which the minimum spacing of RSUs can be inferred. The connection density can be quite high in case data is relayed between RSUs, i.e. along the road (1000 km-2).
description: A Roadside Unit (RSU) is a network function that serves as an intermediary device to enhance communication services in vehicular environments. It can act as a relay node for other RSUs, facilitating data transmission along roads and highways. The placement of RSUs relative to base stations impacts the service area dimension, which is crucial for determining the typical data collection area and minimum spacing between RSUs.
explanation: RSU is classified as a Network Function because it operates within the network infrastructure to provide relay capabilities for vehicular communication services, aligning with the 3GPP's specifications for intelligent transport systems.
section_title: D.5.1 Service area and connection density
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