Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Beyond 5G RIS mmWave Systems: Where Communication and Localization Meet   Upcoming beyond fifth generation (5G) communications systems aim at further
enhancing key performance indicators and fully supporting brand new use cases
by embracing emerging techniques, e.g., reconfigurable intelligent surface
(RIS), integrated communication, localization, and sensing, and mmWave/THz
communications. The wireless intelligence empowered by state-of-the-art
artificial intelligence techniques has been widely considered at the
transceivers, and now the paradigm is deemed to be shifted to the smart control
of radio propagation environment by virtue of RISs. In this article, we argue
that to harness the full potential of RISs, localization and communication must
be tightly coupled. This is in sharp contrast to 5G and earlier generations,
where localization was a minor additional service. To support this, we first
introduce the fundamentals of RIS mmWave channel modeling, followed by RIS
channel state information acquisition and link establishment. Then, we deal
with the connection between localization and communications, from a separate
and joint perspective.

17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat