Radio Links in Android Device, Rutronik

Comparison of radio links inside an
Android device and examples for applications
(Bluetooth Low Energy, Bluetooth, ANT+, NFC, WIFI)

Harald Naumann
Mobile +49-175-5774832 / harald_naumann@rutronik.com

1

Short range radio inside Android phones
NFC Bluetooth Bluetooth ANT+ Wifi Wifi
2.1 (EDR) Low Energy / 802.11b/g 802.11n
BT Smart
Google
Nexus X X X X
Prime
Samsung
S2 X X X
Motorola
Razr Droid X X X X

Sony
ARC S X X X X

http://www.rutronik.com / Harald Naumann / harald_naumann@rutronik.com / +49 175 Page 2

480 minutes shirked to 25 minutes

Close the same topics free of charge
 Wireless links around your Smart Phone:
NFC, Classic Bluetooth, Bluetooth Smart, ANT+ and WIFI
 Rutronik Wireless Roadshow Dortmund 22.- 24.05 and
Berlin 25. – 27.09 (one day is for links around your phone)
 Several suppliers will talk about latest wireless solutions

 Free of charge Roadshows and webinars here:
http://www.rutronik.com/webinars.html
Just send an email to nha@rutronik.com and ask for
time/location of the Rutronik Wireless Roadshow

 Today we have to hurry up and shrink


Short range radio links inside phones
NFC Bluetooth Bluetooth ANT+ Wifi Wifi
2.1 (EDR) Low Energy 802.11b/g 802.11n
Standard ISO/IEC Bluetooth Bluetooth Garmin Wi-Fi Alliance Wi-Fi Alliance
by SIG SIG
Network ISO 13157 IEEE IEEE proprietary IEEE IEEE 802.11n
Standard etc. 802.15.1 802.15.1 802.11b/g
Network Point WPAN WPAN WPAN WPAN WPAN
Type to point
Range free < 0.2 m ≈ 100 m ≈ 100 m ≈ 100 m ≈ 38 m indoor ≈ 70 m
field (class 2) outdoor outdoor / ≈ 140 m indoor / ≈ 250
outdoor outdoor m outdoor
Frequency 13.56 MHz 2.4–2.5 GHz 2.4–2.5 GHz 2.4–2.5 GHz 2.4–2.5 GHz 2.4–2.5 GHz
Bit rate 424 kbit/s 2 to 3 Mbps ≈1.0 Mbps ≈1.0 Mbps (Max/Typ/Min) 150 Mbps / 90
54Mbps / Mbps Multi
36Mbps / stream max
1Mbps 600 Mbps
Set-up time < 0.1 s <6s < 0.006 s ? ? ?
Power < 15mA < 40 mA < 15 mA RX 15 mA TX / (Max/Typ/Min) ?
consum- (read) (class 2) and TX 17 mA RX RX : 100 -
ption 250mA TX:
http://www.rutronik.com / Harald Naumann / harald_naumann@rutronik.com / +49 175
250 - 350mA Page 4

Bluetooth LE / Smart versus Classic
Bluetooth
Feature BR/EDR Bluetooth LE Notes
RF Channels 79 40 2 MHz spacing in LE
1MHz in BT
Modulation GFSK GFSK
Modulation Index 0.25 - 0.35 0.45 - 0.55 Wider signal – more
robust
Max Tx Power +20 dBm (class 1) +10dBm +10 dBm regulatory
+4dBm (class 2) No class structure limit
RX sensitivity -85 dBm -85 dBm BR pathloss = 90 db
LE pathloss = 95 dB
Range (typical) 30 meter 50 meter Modulation index,
(up to 1500 meter increased power for
with +18 dBm) class 2


Bluetooth
Feature BR/EDR Bluetooth LE Notes
Packet Format 6 (BR / EDR) 2 (LE) ID, FHS, DM, DH,
2-DH, 3-DH -
Advertising/ Data
Ack Packet Len 126 µs 80 µs 63% shorter
8 octet Packet 214 µs 144 µs 67% shorter
Max Packet Size 2875 µs = 1021octets 328 µs = 27 LE very short
octets
Max Data Rate 2178.1 kb/s 305 kb/s LE very short
Time to transfer DH1 = 18.2 s, 13.9 s (LE) LE less efficient
1Mbyte DH5 = 8.8 s, for large packets
3-DH5= 2.9s
CRC Strength 16 24 LE stronger
Encryption Safer+ AES-128 LE stronger


Bluetooth
Feature BR/DER Bluetooth LE Notes
Protocols Supported 14 3 Only ATT required for all
by Host plain text applications
Min protocols for 3 (SDP, 2 (ATT, LE uses ATT for service
application L2CAP, L2CAP) discovery and apps )
App
Protocol)
1 MB using BR 8.81 s 13.93s BR 60% faster for data
1 MB using DER 2.93 s 13.93s EDR ~5x faster
1 MB using HS <1s 13.93s LE very slow
L2CAP overhead 4 to 12 4 octets LE basic headers only
octets
L2CAP configuration 7 0 Nothing configured in LE
options
L2CAP commands 17 1 LE very simple


Apps @ Car / Home / Factory

 Bluetooth Low Energy
 Classic Bluetooth
 Wifi
 NFC/RFID passive tags
 NFC/RFID reader/ writer


Bluetooth Low Energy @ Car / Home / Factory

 Based on Nordic nRF8001 or nRF8002
 Create your own BT LE design easy
 uC + sensor + nRF8001 + battery => That´s it

Keyboard and mouse
on BT LE

Phone with BT LE
and heart rate belt

Watch on BT LE
Proximity tag
on BT LE Temperature data logger

ANT+ @ Car / Home / Factory

 Based on Nordic nRF24APxx
 Create your own ANT+ design easy
 uC + nRF24APxx + battery => That´s it
 Or just one of the 20+ other ANT+ modules / Ics
by Rutronik

Wireless data logger

AAL Ambient
Assisted Living Phone with ANT+
Wireless ECG

NFC / RFID read only @ Car / Home / Factory

 Free of charge app at Android market to control
your Android smart phone
 NFC / RFID tags by Sony
 Or just one of the 20+ other
NFC / RFID tags
by Rutronik

Phone with NFC

NFC tags by NFC app at
Sony or IDtronic NFC reader reference
Android market
/demo by STM

NFC / RFID read & write @ Car / Home /
Factory
 Based on STM M24LR64E and /or RFID
/NFC reader/writer CR95HF

 Writing/ reading to EEPROM by NFC or I2C

 STM M24LR64E + STM8 + temperature
senor + battery = temperature data logger

 Can be redesigned to any kind of data
logger easy


WIFI @ Car / Home / Factory

 Smart Home by WIFI
 uC + RS-9110-N-11-22 + battery => That´s it
 Or just one of the 20+ other WIFI modules / Ics
by Rutronik

 “That´s it” solution is
using a WIFI module
with embedded TCP/IP
stack controlled by AT
commands
 Or TCP/IP stack on your
uC
 Or drivers for Android,
Linux and Windows XX
Phone with WIFI

Classic Bluetooth @ Car / Home / Factory

 Apps by Classic Bluetooth
 uC + PAN1321i + battery => That´s it
 Or just one of the 20+ other Bluetooth modules / ICs
by Rutronik

Advertising on Bluetooth
RS232 to Bluetooth

 “That´s it” solution is using a
BT module PAN1321i with
SPP controlled by AT
Hands free kit commands
for bikes Phone with Bluetooth

Your application @ Car / Home / Factory

 You want your own “That´s it” solution?
Bluetooth LE
 Just email to nha@rutronik.com for you

 Call +49 175 5774832
NFC
 Or text to +49 175 5774832 WIFI for you
for you
 Or talk to someone of the wireless
team at www.rutronik.com ANT+
for you

Classic Bluetooth
for you

Thank you in the name of
the wireless team RUTRONIK Elektronische Bauelemente GmbH
Industriestraße 2 | 75228 Ispringen/Pforzheim
>100 years wireless knowledge available to you
Phone + 49 (0) 7231 801-0 | Fax + 49 (0) 7231 82282
Speaker: Mr. Harald Naumann
Mobile: + 49 175 574832
E-Mail: harald_naumann@rutronik.com
Homepage: www.rutronik.com
Wireless Competence Centres
Kista (Sweden) , Ispringen (Germany)

16

www.rutonik.com / Harald Naumann / harald_naumann@rutronik.com / +49 175 5774832 Page 16

Radio Links in Android Device, Rutronik

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