Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Geometric Analysis Method for Evaluation of Coexistence between DSRC
  and Wi-Fi at 5.9 GHz   Co-channel coexistence between Dedicated Short-Range Communications (DSRC)
and Wi-Fi needs thorough study. The reason is that although the 5.850-5.925 GHz
(5.9 GHz) band has been reserved for DSRC so far, the U.S. government is moving
swiftly on opening the band to be shared with Wi-Fi. However, most prior work
lacks sufficient scientific rigor by relying on performance metrics such as
packet delivery rate (PDR) and packet delay that cannot accurately measure
performance of a vehicular network that primarily uses broadcast in
dissemination of packets. Precise analysis of such broadcast operation is
essential for rigorous investigation of DSRC-Wi-Fi coexistence because most
safety-critical applications of DSRC operate based on broadcast. This paper
proposes a new metric that can more accurately characterize the performance of
a broadcast-based DSRC network. The new metric is used to (i) characterize
coexistence of DSRC with IEEE 802.11ac-based Wi-Fi and (ii) suggest selection
of key medium access control (MAC) parameters for DSRC: inter-broadcast
interval (IBI) and contention window (CW).

10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin