Lecture 7 Flashcards
1
Q
What is GSM? How does it work?
A
Basic, mostly for phone calls
2
Q
What does HS-CSD improve over GSM?
A
3
Q
What does GPRS improve over GSM and HS-CSD?
A
4
Q
How many channels does GPRS use? What for?
A
5
Q
How is GPRS capacity sharing modelled?
A
6
Q
How are voice and data modeled in the GPRS/(GSM) model?
A
7
Q
What is the difference between ad hoc and infrastructure WLAN?
A
8
Q
What is DCF? What is te key idea?
A
9
Q
How does DCF work?
A
10
Q
What is the idea for the value of throughput? (WLAN)
A
11
Q
What is the hidden terminal problem?
A
12
Q
What is basic acces mode?
A
13
Q
What is RTS/CTS mode?
A
14
Q
When is Basic Access Mode or RTS/CTS mode better?
A
14
Q
What is the 4-way handshake?
A
15
Q
What is a backoff counter? How does it work?
A
16
Q
What is a retransmission counter (WLAN)?
A
17
Q
What is the idea of the Bianchi model?
A
