Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reversible Models for Wireless Multi-Channel Multiple Access   This paper presents a network layer model for a wireless multiple access
system with both persistent and non-persistent users. There is a single access
point with multiple identical channels. Each user who wants to send a file
first scans a subset of the channels to find one that is idle. If at least one
idle channel is found, the user transmits a file over that channel. If no idle
channel is found, a persistent user will repeat the access attempt at a later
time, while a non-persistent user will leave. This is a useful mathematical
model for "coffee shop" situations where a group of persistent users stay near
an access point for an extended period of time while non-persistent users come
and go. Users have heterogeneous activity behavior, file upload rates, and
service durations. The system is a complex multi-dimensional Markov chain. The
steady state probabilities are found by exploiting a latent reversibility
property. This enables simple expressions for throughput and blocking
probability.

18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys