Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Licensed-Assisted Access to Unlicensed Spectrum in LTE Release 13   Exploiting the unlicensed spectrum is considered by 3GPP as one promising
solution to meet the ever-increasing traffic growth. As a result, one major
enhancement for LTE in Release 13 has been to enable its operation in the
unlicensed spectrum via Licensed-Assisted Access (LAA). In this article, we
provide an overview of the Release 13 LAA technology including motivation, use
cases, LTE enhancements for enabling the unlicensed band operation, and the
coexistence evaluation results contributed by 3GPP participants.

31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph