Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: From 2G TO 3G - The Evolution of International Cellular Standards   The purpose of this paper is to examine the major factors surrouding and
contributing to the creation (and success) of Europe's 2nd generation 'GSM'
cellular system, and compare and contrast it to key events and recent
developments in 3rd generation 'IMT-2000' systems. The objective is to
ascertain whether lessons from the development of one system can be applied to
the other, and what implications 2G has for the development and assessment of
3G technologies. Among the major themes incorporated into this assessment is
the concept of cooperation, and its role in bringing about the collaboration
and integration necessary to support the success of an international cellular
standard.

21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys