Difference between revisions of "Aufgaben:Exercise 3.6Z: Concepts of 3G Mobile Communications Systems"

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[[File:P_ID2232__Mob_A_3_6.png|right|frame|Terms of the 3G mobile radio systems (except GPRS )]]
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[[File:P_ID2232__Mob_A_3_6.png|right|frame|Terms of the 3G mobile radio systems (except one entry )]]
 
On the right there are various terms used in 3G mobile communications systems.  
 
On the right there are various terms used in 3G mobile communications systems.  
  
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Third generation systems include, for example, the following standards
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Third generation systems include, for example, the following standards:
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*[[Mobile_Communications/Characteristics_of_UMTS#The_IMT-2000_standard|IMT–2000]]:   This abbreviation stands for  $\rm I\hspace{-0.01cm}$nternational $\hspace{0.05cm}\rm M\hspace{-0.01cm}$obile $\hspace{0.05cm}\rm T\hspace{-0.01cm}$elecommunications at the year $2000$;
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*[[Mobile_Communications/Characteristics_of_UMTS#The_IMT-2000_standard|$\text{IMT–2000}$]]:   This abbreviation stands for  $\rm I\hspace{-0.01cm}$nternational $\hspace{0.05cm}\rm M\hspace{-0.01cm}$obile $\hspace{0.05cm}\rm T\hspace{-0.01cm}$elecommunications at the year $2000$;
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*[[Mobile_Communications/Die_Charakteristika_von_UMTS#Systemarchitektur_und_Basiseinheiten_bei_UMTS|UMTS]]:    '''U'''niversal '''M'''obile '''T'''elecommunication '''S'''ystem.
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*[[Mobile_Communications/Die_Charakteristika_von_UMTS#Systemarchitektur_und_Basiseinheiten_bei_UMTS|$\text{UMTS}$]]:    $\rm U\hspace{-0.01cm}$niversal $\rm M\hspace{-0.01cm}$obile $\rm T\hspace{-0.03cm}$elecommunication $\rm S\hspace{-0.01cm}$ystem.
  
  
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Nur einer der zwanzig aufgeführten Begriffe fällt aus dem Rahmen. Hierbei handelt es sich um eine Systemerweiterung von  [[Examples_of_Communication_Systems/Allgemeine_Beschreibung_von_GSM#.23_.C3.9CBERBLICK_ZUM_DRITTEN_HAUPTKAPITEL_.23|GSM]].
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Only one of the twenty listed terms is out of the ordinary.  This is a system extension of  [[Examples_of_Communication_Systems/General_Description_of_GSM#.23_.C3.9CBERBLICK_To_the_PRINCIPLE_.23|$\rm GSM$]].  
  
  
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''Hinweise:''
 
  
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*Die Aufgabe behandelt das Themengebiet  [[Mobile_Communications/Die_Charakteristika_von_UMTS|Charakteristika von UMTS]].
 
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* Bezug genommen wird auch auf das Hauptkapitel&nbsp; [[Examples_of_Communication_Systems/Allgemeine_Beschreibung_von_UMTS#.23_.C3.9CBERBLICK_ZUM_VIERTEN_HAUPTKAPITEL_.23|UMTS – ''Universal Mobile Telecommunications System'']] <br>des Buches „Beispiele von Nachrichtensystemen”.
 
  
 +
''Notes:''
  
 +
*This task refers to the chapter [[Mobile_Communications/Characteristics_of_UMTS|Characteristics of UMTS]].
 +
* Reference is also made to the main chapter&nbsp; [[Examples_of_Communication_Systems/General_Description_of_UMTS#.23_.C3.9CBERBLICK_To_the_Fourth_Main_Chapter_.23|UMTS ]]&nbsp; of the book "Examples of Communication Systems".
  
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===Fragebogen===
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 +
 
 +
 
 +
===Questionnaire===
  
 
<quiz display=simple>
 
<quiz display=simple>
  
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{Welche der folgenden Aussagen sind richtig?
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{Which of the following statements are correct?
 
|type="()"}
 
|type="()"}
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- IMT–2000 ist eine Untermenge von UMTS.
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- IMT-2000 is a subset of UMTS.
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+ UMTS ist eine Untermenge von IMT–2000.
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+ UMTS is a subset of IMT-2000.
  
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{Welche Aussagen erlauben die farblichen Zuordnungen in der Grafik?
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{Which statements do the color assignments in the graphic allow?
 
|type="()"}
 
|type="()"}
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+ Rote Eintragungen beschreiben Systemvarianten von  UMTS.
+
+ Red entries describe system variants of UMTS.
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- Grüne Eintragungen beschreiben Systemvarianten von  UMTS.
+
- Green entries describe system variants of UMTS.
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- Blaue Eintragungen beschreiben Systemvarianten von  UMTS.
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- Blue entries describe system variants of UMTS.
  
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{Betrachten Sie weiterhin die farbliche Zuordnung in der Grafik. Was gilt?
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{Continue to look at the color assignment in the graphic. What is valid?
 
|type="()"}
 
|type="()"}
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- Rote Eintragungen gehören zu  IMT–2000, nicht zu  UMTS.
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- Red entries belong to IMT-2000, not to UMTS.
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+ Grüne Eintragungen gehören zu  IMT–2000, nicht zu  UMTS.
+
+ Green entries belong to IMT-2000, not to UMTS.
  
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{Welche Basiseinheiten sichern bei UMTS die Transportebene?
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{Which base units secure the transport layer in UMTS?
 
|type="[]"}
 
|type="[]"}
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+ Das ''Core Network'' &nbsp; ('''CN'''),
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+ The "Core Network"&nbsp; (CN),
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- das ''Gateway Mobile Switching Center'' &nbsp; ('''GMSC'''),
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- the "Gateway Mobile Switching Center" &nbsp; (GMSC),
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- das ''Mobile Switching Center'' &nbsp; ('''MSC'''),
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- the "Mobile Switching Center" &nbsp; (MSC),
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+ die ''Base Station'' &nbsp; (bei UMTS: &nbsp; '''Node B'''),
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+ the "Base Station" &nbsp; (for UMTS: &nbsp; "Node B"),
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- der ''Radio Network Controller'' &nbsp; ('''RNC'''),
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- the "Radio Network Controller" &nbsp; (RNC),
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+ das ''UMTS Terrestrial Radio Access Network'' &nbsp; ('''UTRAN''').
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+ the "UMTS Terrestrial Radio Access Network" &nbsp; (UTRAN).
  
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{Welche Einrichtungen übernehmen die Datenvermittlung bei UMTS?
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{Which facilities handle data switching for UMTS?
 
|type="[]"}
 
|type="[]"}
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- Das ''Core Network'' &nbsp; ('''CN'''),
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- The "Core Network"&nbsp; (CN),
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+ das ''Gateway Mobile Switching Center'' &nbsp; ('''GMSC'''),
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+ the "Gateway Mobile Switching Center" &nbsp; (GMSC),
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+ das ''Mobile Switching Center'' &nbsp; ('''MSC'''),
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+ the "Mobile Switching Center" &nbsp; (MSC),
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- die ''Base Station'' &nbsp; (bei UMTS: &nbsp; '''Node B'''),
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- the "Base Station" &nbsp; (for UMTS: &nbsp; "Node B"),
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+ der ''Radio Network Controller'' &nbsp; ('''RNC'''),
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+ the "Radio Network Controller" &nbsp; (RNC),
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- das ''UMTS Terrestrial Radio Access Network'' &nbsp; ('''UTRAN''').
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- the "UMTS Terrestrial Radio Access Network" &nbsp; (UTRAN).
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−
 
 
−
 
 
−
 
 
 
</quiz>
 
</quiz>
  
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===Musterlösung===
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===Solution===
 
{{ML-Kopf}}
 
{{ML-Kopf}}
  
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'''(1)'''&nbsp; Richtig ist die <u>Aussage 2</u>:
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'''(1)'''&nbsp; Correct is the <u>solution 2</u>:
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* Der IMT–2000–Standard beinhaltet in einer ersten Ebene ''W–CDMA'', ''TD–CDMA'', ''TDMA'' und ''FD–TDMA'', wobei nur die beiden zuerst genannten Varianten gleichzeitig dem UMTS–Standard zugerechnet werden.  
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*The IMT-2000 standard includes in a first level "W-CDMA",&nbsp; "TD-CDMA",&nbsp; "TDMA"&nbsp; and "FD-TDMA", <br>where only the first two mentioned variants are simultaneously attributed to the UMTS standard.  
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*Daraus folgt: &nbsp; UMTS ist eine Untermenge von IMT–2000, nicht umgekehrt.
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*From this follows: &nbsp; UMTS is a subset of IMT-2000, not vice versa.
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−
 
 
−
 
 
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'''(2)'''&nbsp; Alle zu UMTS gehörigen Eintragungen sind in der Tabelle rot markiert  &nbsp; &rArr; &nbsp; <u>Antwort 1</u>:
 
  
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Zu '''W–CDMA''' zählt man
 
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*''UTRA–FDD'', die FDD–Komponente des europäischen UMTS–Standards,
 
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*das amerikanische ''cdma 2000–System'', das aber nicht zu UMTS gehört.
 
  
  
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'''(2)'''&nbsp; All entries belonging to UMTS are marked in red in the table &nbsp; &rArr; &nbsp; <u>Answer 1</u>:
  
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Zu '''TD–CDMA''' werden hinzugerechnet:
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*$\rm W-CDMA$&nbsp; includes
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*''UTRA–TDD'', die TDD–Komponente von UMTS,
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# &nbsp; "UTRA-FDD", the FDD component of the European UMTS standard,
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*das chinesische ''TD–SCDMA'', mittlerweile in den UMTS–TDD–Standard integriert.
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# &nbsp; the American "cdma 2000 system", which, however, does not belong to UMTS.
  
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*Added to&nbsp; $\rm TD-CDMA$&nbsp; are:
 +
# &nbsp; "UTRA-TDD", the TDD component of UMTS,
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# &nbsp; the Chinese "TD-SCDMA", now integrated into the UMTS-TDD standard.
  
  
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'''(3)'''&nbsp; Richtig ist der <u>zweite Lösungsvorschlag</u>:  
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'''(3)'''&nbsp; Correct is the <u>solution 2</u>:
  
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Die drei Systemvarianten, die zwar zu IMT–2000 gehören, aber nicht zu UMTS, sind:
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The three system variants that belong to IMT-2000 but not to UMTS are:
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*''TDMA'': &nbsp; Hierzu zählen Weiterentwicklungen des GSM–Ablegers ''EDGE'' und des amerikanischen Pendants ''UWC–136'',
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*$\rm TDMA$: &nbsp; This includes further developments of the GSM offshoot "EDGE" and its American counterpart "UWC-136",
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*''FD–TDMA'', die Weiterentwicklung des Schnurlos–Telefonie–Standards ''DECT'',
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*$\rm FD-TDMA$, &nbsp; the further development of the cordless telephony standard "DECT"',
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*der amerikanische Standard ''cdma 2000}''.
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*the American standard&nbsp; $\rm cdma $.
  
  
  
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'''(4)'''&nbsp; Richtig sind die <u>Antworten 1, 4 und 6</u>, wie man im Buch „Beispiele von Nachrichtensystemen” , Kapitel [[Examples_of_Communication_Systems/UMTS–Netzarchitektur|UMTS–Netzarchitektur]] nachlesen kann.
+
'''(4)'''&nbsp; Correct are <u>answers 1, 4 and 6</u>, as you can read in the book "Examples of Communication Systems" in chapter&nbsp; [[Examples_of_Communication_Systems/UMTS_Network_Architecture|UMTS Network Architecture]].
  
  
 +
'''(5)'''&nbsp; From the above link it also appears that <u>answers 2, 3 and 5</u> apply here.
  
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'''(5)'''&nbsp; Aus obigem Link geht auch hervor, dass hier die <u>Antworten 2, 3 und 5</u> zutreffen.
+
'''By the way:''' &nbsp; <br>The only term in the graphic on the information page that does not refer to UMTS is "GPRS" &nbsp; &rArr; &nbsp;[[Mobile_Communications/Characteristics_of_GSM#GSM_extensions|"General Packet Radio Service"]] is a GSM extension.
  
  
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'''Übrigens:''' &nbsp; <br>Der einzige Begriff in der Grafik auf der Angabenseite, der sich nicht auf UMTS bezieht, ist „GPRS”  &nbsp; &rArr; &nbsp;[[Mobile_Communications/Die_Charakteristika_von_GSM#GSM.E2.80.93Erweiterungen|''General Packet Radio Service'']] ist eine GSM–Erweiterung.
 
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{{ML-Fuß}}
 
  
  
  
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[[Category:Exercises for Mobile Communications|^3.4 Characteristics of UMTS^]]
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[[Category:Mobile Communications: Exercises|^3.4 Characteristics of UMTS^]]

Latest revision as of 14:37, 23 March 2021

Terms of the 3G mobile radio systems (except one entry )

On the right there are various terms used in 3G mobile communications systems.

Third generation systems include, for example, the following standards:

  • $\text{IMT–2000}$:   This abbreviation stands for $\rm I\hspace{-0.01cm}$nternational $\hspace{0.05cm}\rm M\hspace{-0.01cm}$obile $\hspace{0.05cm}\rm T\hspace{-0.01cm}$elecommunications at the year $2000$;
  • $\text{UMTS}$:   $\rm U\hspace{-0.01cm}$niversal $\rm M\hspace{-0.01cm}$obile $\rm T\hspace{-0.03cm}$elecommunication $\rm S\hspace{-0.01cm}$ystem.


Only one of the twenty listed terms is out of the ordinary.  This is a system extension of  $\rm GSM$.





Notes:

  • This task refers to the chapter Characteristics of UMTS.
  • Reference is also made to the main chapter  UMTS   of the book "Examples of Communication Systems".



Questionnaire

1

Which of the following statements are correct?

IMT-2000 is a subset of UMTS.
UMTS is a subset of IMT-2000.

2

Which statements do the color assignments in the graphic allow?

Red entries describe system variants of UMTS.
Green entries describe system variants of UMTS.
Blue entries describe system variants of UMTS.

3

Continue to look at the color assignment in the graphic. What is valid?

Red entries belong to IMT-2000, not to UMTS.
Green entries belong to IMT-2000, not to UMTS.

4

Which base units secure the transport layer in UMTS?

The "Core Network"  (CN),
the "Gateway Mobile Switching Center"   (GMSC),
the "Mobile Switching Center"   (MSC),
the "Base Station"   (for UMTS:   "Node B"),
the "Radio Network Controller"   (RNC),
the "UMTS Terrestrial Radio Access Network"   (UTRAN).

5

Which facilities handle data switching for UMTS?

The "Core Network"  (CN),
the "Gateway Mobile Switching Center"   (GMSC),
the "Mobile Switching Center"   (MSC),
the "Base Station"   (for UMTS:   "Node B"),
the "Radio Network Controller"   (RNC),
the "UMTS Terrestrial Radio Access Network"   (UTRAN).


Solution

Solution

(1)  Correct is the solution 2:

  • The IMT-2000 standard includes in a first level "W-CDMA",  "TD-CDMA",  "TDMA"  and "FD-TDMA",
    where only the first two mentioned variants are simultaneously attributed to the UMTS standard.
  • From this follows:   UMTS is a subset of IMT-2000, not vice versa.


(2)  All entries belonging to UMTS are marked in red in the table   ⇒   Answer 1:

  • $\rm W-CDMA$  includes
  1.   "UTRA-FDD", the FDD component of the European UMTS standard,
  2.   the American "cdma 2000 system", which, however, does not belong to UMTS.
  • Added to  $\rm TD-CDMA$  are:
  1.   "UTRA-TDD", the TDD component of UMTS,
  2.   the Chinese "TD-SCDMA", now integrated into the UMTS-TDD standard.


(3)  Correct is the solution 2:

The three system variants that belong to IMT-2000 but not to UMTS are:

  • $\rm TDMA$:   This includes further developments of the GSM offshoot "EDGE" and its American counterpart "UWC-136",
  • $\rm FD-TDMA$,   the further development of the cordless telephony standard "DECT"',
  • the American standard  $\rm cdma $.


(4)  Correct are answers 1, 4 and 6, as you can read in the book "Examples of Communication Systems" in chapter  UMTS Network Architecture.


(5)  From the above link it also appears that answers 2, 3 and 5 apply here.

By the way:  
The only term in the graphic on the information page that does not refer to UMTS is "GPRS"   ⇒  "General Packet Radio Service" is a GSM extension.

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