April 2016
Intermediate to advanced
715 pages
26h 17m
English
Content preview from Handbook on Mobile and Ubiquitous Computing
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Software Architecture for a Multi-Protocol RFID Reader on Mobile Devices
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87
CW CW
Command
B
Command
D
Response
T
1
T
2
T
4
CW
T
1
T
2
Command
E
If invalid response
Reader
Collided reply
No reply
Tag 1
Tag 2
CW
T
1
CW
Response
T
1
T
2
Response
Collision
Command
B
No
reply
T
3
CW
T
1
T
2
CW
T
1
Command
C
No
reply
T
3
Comm
E
When tag 2
could not
recognize
command C
Response
Response
If valid response
Successful sequence
Tag 1
Tag 2
Command
F
Command
F
Command
A
Command
C
Figure 4.4 An example of a link timing and its time constraints. (Class 1 Generation 2
UHF Air Interface Protocol Standard version 1.09: “Gen 2”, EPC global standard documents,
http://www.epcglobalinc.org/standards; Information Technology-Radio ...
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