  Smart glasses that support augmented reality (AR) have the potential to
become the consumer's primary medium of connecting to the future internet. For
the best quality of user experience, AR glasses must have a small form factor
and long battery life, while satisfying the data rate and latency requirements
of AR applications. To extend the AR glasses' battery life, the computation and
processing involved in AR may be offloaded to a companion device, such as a
smartphone, through a wireless connection. Sidelink (SL), i.e., the D2D
communication interface of 5G NR, is a potential candidate for this wireless
link. In this paper, we use system-level simulations to analyze the feasibility
of NR SL for supporting AR. Our simulator incorporates the PHY layer structure
and MAC layer resource scheduling of 3GPP SL, standard 3GPP channel models, and
MCS configurations. Our results suggest that the current SL standard
specifications are insufficient for high-end AR use cases with heavy
interaction but can support simpler previews and file transfers. We further
propose two enhancements to SL resource allocation, which have the potential to
offer significant performance improvements for AR applications.
