05727/2016

WLAN/Wi-Fi

 

In this page:Definition, applications, standards and frequencies for Wireless LAN (WLAN), also known as Wi-Fi.


Wi-Fi Hot-spots in Brazil - Anatel

 

In May/13, Anatel started to report information about internet accesses point that use Wi-Fi technology, called hotspots.

 

Check here the hotspots in Brazil (Anatel)

 

Currently, there are information avaible about the companies that represent almost 90% of the wi-fi accesses points distributed according with the respective areas of operation.

 

Operator 2013 2014 2015 1Q16 2Q16 Jul/16
Oi 152,577 1,014,456 1,018,466* 1,018,466* 1,018,466* 1,018,466*
Net 3,503 3,503 3,503 3,503 3,503 3,503
LINKTEL 2,056 2,056 - - 5,647 5,647
TIM 507 799 799 799 799 799
Vivo 175 175 175 175 175 175
Sercomtel 132 138 138 138 138 138
Algar Telecom 19 19 19 19 19 19
IDINET 1 1 1 1 1 1
Rede Nets 1 1 1 1 1 1
VB Telecom 1 1 1 1 1 1
Total 158,972 1,021,149 1,023,103 1,023,103 1,028,750 1,028,750

Includes Oi WiFi Fon network. * Values about January 2015 Since 08/28/2014, OI started to release data about WI-FI.

Source: ANATEL.

 

 

Hot-spots Wi-Fi in Brazil

 

RANKING OF FEDERATIVE UNITS HAVING MORE CITIES
OFFERING INTERNET VIA WI-FI
Position Federative Unit Cities having WI-FI % of the cities having
WI-FI
1 Brasília 1 100
2 Roraima 7 46.7
3 Paraíba 103 46.2
4 Rio de Janeiro 39 42.4
5 Amapá 6 37.5
6 Pará 54 37.5
7 Rio Grande do Norte 61 36.5
8 Amazonas 22 35.5
9 Ceará 65 35.3
10 Alagoas 33 32.4
11 São Paulo 207 32.1
12 Mato Grosso do Sul 23 29.1
13 Mato Grosso 40 28.4
14 Pernambuco 51 27.6
15 Espírito Santo 21 26.9
16 Goiás 64 26
17 Bahia 100 24
18 Maranhão 51 23.5
19 Rio Grande do Sul 116 23.3
20 Santa Catarina 66 22.4
21 Paraná 84 21.1
22 Rondônia 10 19.2
23 Piauí 42 18.8
24 Minhas Gerais 155 18.2
25 Sergipe 12 16
26 Tocantins 22 15.8
27 Acre 2 9.1

 

 

Hot-spots Wi-Fi in Brazil

 

Below, we have the number of public hot-spots existing in Brazil counted by JiWire.

 

- 2009 2010 2011 2012 2013 1Q14
2Q14
Jul/14
Aug/14
São Paulo 2,446 2,455 2,560 2,580
3,387
3,612
3,612
3,612
3,612
Rio de Janeiro 460 454 487 494
907
1,079
1,079
1,079
1,079
Rio Grande do Sul 134 136 144 149
275
393
393
393
393
Mato Grosso 37 39 38 38
247
262
262
262
262
Paraná 150 155 163 167
241
248
248
248
248
Brasilia 156 151 154 159
177
228
228
228
228
Total Brazil 3,982 3,997 4,196 4,245
6,120
6,769
6,769
6,769
6,769

Source: JiWire.

 

However, there are hot-spots in Brazil that aren't counted by JiWire.

 

Oi, which acquired Vex, and Linktel are the main hot-spots providers in Brazil. Most of Linktel's 1,570 hotspots aren't counted in the total presented by JiWire.

 

Teleco estimates in about 6 thousand the total of hot-spots existing in Brazil.

 

 

Hot-spots Wi-Fi in the world

 

  2012 2013 1Q14
2Q14
Jul/14
Aug/14
United States
135,475
152,072
190,353
198,757
198,759
201,694
South Korea
186,759
186,758
186,758
186,758
186,758
186,758
United Kingdom
182,345
182,610
182,610
182,610
182,610
182,610
China
104,106
104,106
104,106
104,106
104,106
104,106
France
35,431
35,432
35,431
35,431
35,431
35,431
Taiwan
24,149
24,148
24,148
24,148
24,148
24,148
Russia
16,829
16,829
16,829
16,829
16,829
16,829
Total in more than 140 countries
822,018
842,176
881,480
890,058
890,060
893,020

Source: site JiWire.

 

 

Cities where city hall assures access with WI-FI connection

 

Cities with Population (inhabitans) % Total of Cities Cities with WI-FI connection
Until 5 000 people
12.4%
161
From 5 001 to 10 000
8.9%
108
10 001 to 20 000
12.4%
172
20 001 to 50 000
16.3%
172
50 001 to 10 0000
26.0%
85
10 0001 to 50 0000
31.2%
78
More than 500 000
50.0%
19
Brazilian Total
14.3%
795

 

Form of Connction
Free
Charged
Free and Charged
Until 5 000 people
143
9
9
From 5 001 to 10 000
97
8
3
10 001 to 20 000
162
6
4
20 001 to 50 000
164
3
5
50 001 to 10 0000
82
1
2
10 0001 to 50 0000
77
0
1
More than 500 000
19
0
0
Brazilian Total
744
27
24

 

Form of Connection
All the City
Part of the urban and rural areas
All the urban area
Some villages inside urban area
Until 5 000 people
31
33
46
51
From 5 001 to 10 000
19
28
24
37
10 001 to 20 000
14
47
35
76
20 001 to 50 000
17
39
25
91
50 001 to 10 0000
5
20
5
55
10 0001 to 50 0000
5
11
6
56
More than 500 000
0
3
0
16
Brazilian Total
91
181
141
382

Source: Profile of Brazilian Cities by IBGE 2012

 

Wi-Fi

 

A Wireless LAN (WLAN) is a local net wireless standardized by IEEE 802.11. It's also known as Wi-Fi, abbreviation of "wireless fidelity" and registered brand owned by Wireless Ethernet Compatibility Alliance (WECA).

 

 

Main applications

  • Local Internal Net of offices and houses, replacing or complementing nets which use coaxial cables.
  • Public Nets for internet access, for those the Wi-Fi name is more used.

Standards

 

The IEEE 802 Committee, "Institute of Electrical and Electronics Engineers" from the United States, is a group that leads the standardization of local nets (LANs) and Metropolitans (MANs) in worldwide level.

 

The initial standard 802.11 of 1999 was improved being defined currently the following alternatives:

 

 
Frequencies
Technical Modulation
Date Index
802.11b 2400-2483,5 MHz DSSS until 11 Mbit/s**
802.11g DSSS, OFDM until 54 Mbit/s
802.11a

5150-5350 MHz

5470-5725 MHz*

5725-5850 MHz

OFDM until 54 Mbit/s

* O IEEE 802.11h extends this standardo

**There is an attachment to this rule which permits to extend the index until 44 Mbit/s.

 

The major part of the Brazilian nets use the 802.11b standard.

 

 

Technical Modulation

 

DSSS (Direct Sequence Spread Spectrum) is the spectrum spread by direct sequence.

 

OFDM (Orthogonal Frequency Division Multiplexing) is a more efficient technique of modulation than DSSS.

 

 

Available frequencies in Brazil

 

The WiFi nets use frequencies that have no need of authorization to be used.

 

The conditions of use to this frequencies in Brazil are established by the Regulation on Equipments of Radio Communication of Radiation (Regulamento sobre Equipamentos de Radiocomunicação de Radiação Restrita. sections IX and X - in Portuguese), reedited by Anatel's resolution 365 of 05/10/04.

 

Frequencies (MHZ) Conditions of use in Brazil

2400-2483

 

5725-5850

Destined in Brazil, in second character, to equipments of Restricted Radio Communication like Wi-Fi nets and Radio Spread Spectrum.

 

The band of 2400 MHz is used in Brazil in primary characyer by "Serviço Auxiliar de Radiodifusão e Correlatos - SARC" and for Repetition in TV.

 

Anatel established that systems (2400 MHz) places, where the population is higher than 500 thousand inhabitants and potency (eirp) higher than 400 mW, can't operate without Anatel's authorization.

5150-5350

 

5470-5725

Wireless Access Systems in Broadband to local nets.

 

Band 5150-5350 MHz can be used in internal environments (indoor) and 5470-5725 MHz in external and internal environments.

 

 

Other standards of IEEE 802

 

IEEE 802 has other standards for wireless nets like Wireless Personal Area Network (WPAN) which includes 802.15.1 (Bluetooth) and 802.16 Broadband Wireless Access (BBWA) or WiMax.

 

More details about WIMAX check the section WIMAX do Teleco.

 

 

Related sites:

 

WECA: http://www.wi-fi.org

 

Notícias sobre Wi-Fi: http://wifinetnews.com

 

 

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