Page 345 - From GMS to LTE

Long Term Evolution (LTE) and LTE-Advanced Pro 331

3. Describe the differences between the tasks for the MME and the tasks of the S-GW.

4. What is an RB?

5. How does a mobile device get access to the PUSCH?

6. What are the differences between ARQ and HARQ?

7. What is the difference between a default and a dedicated bearer?

8. What is the purpose of DRX in RRC connected state?

9. How is mobility controlled in RRC idle state?

10. What is the difference between a cell change order and a handover?

11. How can the LTE core network be interconnected with legacy core networks and
why should this be done?

12. What is CS‐fallback?

13. What is the big disadvantage of Internet‐based voice services compared to network
operator‐based voice services?

14. Describe different options for the backhaul connection of the eNode‐B.

Answers to these questions can be found on the website to this book at http://www.
wirelessmoves.com.

References

1 The International Telecommunication Union, Framework and Overall Objectives of the
Future Development of IMT‐2000 Systems Beyond IMT‐2000, ITU‐R M.1645, 2003.
2 3GPP, Evolved Universal Terrestrial Radio Access (E‐UTRA); User Equipment (UE)
Radio Access Capabilities Release 8, TS 36.306.
3 M. Sauter (2009) Beyond 3G – Bringing Networks, Terminals and the Web Together,
John Wiley & Sons Ltd, ISBN 978–0‐470–75188–6.
4 3GPP, Evolved Universal Terrestrial Radio Access (E‐UTRA); User Equipment (UE)
Radio Transmission and Reception, version 9.2.0, TS 36.101.
5 3GPP, Evolved Universal Terrestrial Radio Access Network (E‐UTRAN); S1 Data
Transport, TS 36.414.
6 3GPP, Evolved Universal Terrestrial Radio Access Network (E‐UTRAN); S1 Application
Protocol (S1AP), TS 36.413.
7 The Internet Engineering Task Force (IETF), Stream Control Transmission Protocol,
RFC 4960, http://tools.ietf.org/html/rfc4960, Accessed in 2017.
8 3GPP, Evolved Universal Terrestrial Radio Access Network (E‐UTRAN); X2 Application
Protocol (X2AP), TS 36.423.