Lecture 6 (4G)

Question 1

What is a key feature of 4G networks?

Answer 1

Seamless mobility, allowing users to roam freely between different standards and modes of wireless communication.

Question 2

What types of communication are supported by 4G networks?

Answer 2

Integrated voice, data, and video through IP-based communication systems.

Question 3

What protocols are used in 4G networks to improve communication and resource discovery?

Answer 3

Stream Control Transmission Protocol (SCTP) and Service Location Protocol (SLP).

Question 4

How does SCTP improve communication?

Answer 4

It is a successor to SS7 and is used as a replacement for TCP to maintain multiple data streams within a single connection.

Question 5

How does SLP improve resource discovery?

Answer 5

It enables automatic resource discovery and makes networked resources dynamically configurable through IP-based service and directory agents.

Question 6

Features of 4G

Answer 6

• Faster and more reliable.
• Lower cost than previous generations
• Multi-standard wireless system.
• Ad Hoc Networking.
• IPv6 Core.
• OFDM used instead of CDMA.
• Potentially IEEE standards

Question 7

Key 4G Mobility Concepts

Answer 7

IP Mobility
- VoIP
- Ability to move around with the same IP address
* IP tunnels
* Intelligent Internet
* Presence Awareness Technology
* Knowing who is on line and where
* Radio Router
* Bringing IP to the base station