1. nRF ANT Test
Min-ju Kang

2. Index ANT Protocol Performance Test Power Consumption
Design based on ANT
Further work

3. ANT Protocol Comparison of network Master Slave Same Channel
Different Channel M M M M
ID1
Addr1
CH1
Addrn M M S S S
CH2 S
ID2 S
Addr2 S … … … … S S M
CHn
IDn M
N : 1 (X)
1 : N
1 : N
N : 1
1 : 1 (O)
Broadcast
Shared Channel
Multi - Channel

4. ANT Protocol Comparison of pros and cons Case Strengths Weaknesses
Needs
Broadcast
Can’t send specific slave.
Shared Channel
Can send specific slave in shared channel.
(Data[0] ~ [1] : Address)
1. Slaves are assigned with same channel period.
2. After master must send slave with corresponsive address,
The slave can send message to master.
1. Channel Type & Transmission Type
: Shared.
2. Master and Slave have same channel period.
3. Use appointed address.
Multi - Channel
Can identify channel.
Can configure different channel period.
The number of channel is max 15.
Open new channel.

5. Performance Test Time to receive first data
Time & Bandwidth during send 100 data per channel
Multi / Shared M M
Addr1
CH1
Addrn M S
CH2 S
Addr2 S … … S
CHn M
Shared Channel
Multi - Channel

6. (Independent & Global Data)
Performance Test
Channel Configuration – Multi channel
Slave
Master
Channel Name
Channel Number
Channel Type
RF frequency
Transmission Type
Device Type
Device number
Channel
Period
Network Number A
0x00
SLAVE
0x66
(2466MHz)
(Wildcard)
0x01
4Hz,
50Hz,
100Hz
(Public) B
0x02 C
0x03
A/B/C
0x00
MASTER
0x66
0x05
(Independent & Global Data)
0x01/
0x02/
0x03
4Hz,
50Hz,
100Hz
(Public)

7. Performance Test Channel Configuration – Shared Channel Slave Master
txBuf[0] = 0x01 / 0x02 / 0x03
Channel Name
Channel Number
Channel Type
RF frequency
Transmission Type
Device Type
Device number
Channel
Period
Network Number A
0x00
SHAREDSLAVE
0x66
(2466MHz)
(Wildcard)
0x01
100Hz
(Public) A
0x00
SHARED
MASTER
0x66
0x02
(Shared Channel 1byte)
0x01
100Hz
(Public)

8. Performance Test Time to Receive first data – Multi-channel Result
Channel Period
Time
4Hz
1620ms
(Max : 2900ms ~ Min : 400ms)
50Hz
284ms
(Max : 1020ms ~ Min : 50ms)
100Hz
126ms
(Max : 400ms ~ Min : 5ms)
(Average : 9 count)

9. Performance Test
Time & Bandwidth during send 100 data per channel - Multi-channel
Channel Period : 100Hz
Message Type :with Ack

10. Performance Test Result
Tx/Rx Period : 20ms <- expected value : 10ms
Average : 3 number of Test
Device Type
Time [sec]
Bandwidth [Kbps]
Slave
1.996
3.21
1 Master
2.008
3.19
7.715
(Max : ~ Min : 6.755)
2.517
(Max : ~ Min : 2.192)
3 Master
5.194
(Max : ~ Min : 2.264)
1.524
(Max : 2.83 ~ Min : 0.82)

11. Performance Test
Time & Bandwidth during send 100 data per channel - Shared Channel
Channel Period : 100Hz
Message Type :with Ack
Result
Device Type
Time [sec]
Bandwidth [Kbps]
Slave
4.753
1.347
Master
4.701
1.361
(Average : 3 slave)

12. Power Consumption
Graph
Sleep Mode
Master : uA
Slave : uA

13. Power Consumption Graph Master Acknowledge : 1.66 mA
Broadcast : 1.24 mA

14. Power Consumption Graph Slave
Same power consumption regardless of channel period
Open Channel : 1.73 mA

15. Power Consumption Graph Slave Acknowledge :1.07 mA
Broadcast : uA

16. Power Consumption Result Channel Period [Hz] State Data type
Device Type
Average Power
Nothing (Sleep)
Master
21.71 uA
Slave
22.80 uA
100
Open channel
1.73 mA
Transmission
Acknowledge
1.66 mA
1.07 mA
Broadcast
1.24 mA uA 5
1.71 mA uA
71.26 uA
81.85 uA
65.62 uA

17. Design based on ANT Slim-Lite Master : Slim-Lite Slave : Mobile M S M
CH1
CH1
CH2
CH1
CH2 S S S S S S S S S
CH1 : 5Hz, Anchor notify & Mobile request service
CH2 : 100Hz, Services

18. Further work
SPI on Slim-Lite
Zigbee Network