37 Questions
What is a key feature of 3G systems related to bandwidth?
Variable bit rate
Which organization manages the UMTS standard for European 3G systems?
3GPP
What was the reason behind UMTS becoming the preferred solution for countries with 2G systems?
High data capability
In which year was the first commercial UMTS network deployed?
2001
What is the difference between FDD and TDD modes in 3G systems?
FDD uses different frequencies for uplink and downlink, TDD uses different time slots.
What technique was used by the global system for mobile communication (GSM) standard in the 2nd generation (2G) to multiplex calls?
TDMA
Which system succeeded the 1st generation (1G) cellular networks in terms of commercial development in the early 80s?
2nd generation (2G)
What were some of the limitations of 2G systems as described in the text?
Incompatibility issues in different countries
What technology did IS-95, adopted by some North American operators in the 2nd generation (2G), use to multiplex calls?
CDMA
What system was defined by the International Telecommunication Union (ITU) as the 3rd generation (3G) of mobile telephony standards?
IMT-2000
What is the main purpose of integrating voice data on the dedicated channel and data on the downlink shared channel in HSDPA and wide band AMR services?
To enhance the speed of the data rate
Which ITU proposed IMT-2000 system is the main competitor to UMTS?
CDMA 2000
What is the purpose of UMTS architectures in relation to second-generation telecommunication systems?
To phase in new software and network elements gradually
Which 3GPP release is associated with the 'Next Generation Network (NGN) architecture'?
3GPP Release 4
What key aspect do subsequent releases within UMTS specifications mainly focus on?
Improving the flexibility and efficiency of the operating network
What key feature did Release 4 of the 3GPP UMTS standard focus on improving?
Efficient use of IP
Which 3GPP UMTS release included the core of HSDPA, providing downlink packet support and a raw data rate of 14 Mbps?
Release 5
What was a significant enhancement introduced in Release 6 of the 3GPP UMTS standard?
Enhanced uplink with improved packet data support
Which aspect of the 3GPP UMTS standard provided reduced delays and increased capacity in the uplink by around twice compared to the original standard?
HSUPA services
What feature was introduced within Release 6 of the 3GPP UMTS standard to provide improved broadcast services like Mobile TV?
Multimedia Broadcast Multicast Services (MBMS)
What is a significant difference between UMTS and HSPA technology?
UMTS focused on packet operation while HSPA focused on switched circuit operation.
Which feature of HSPA technology provides for maximum data rates of 14 Mbps in the downlink?
Use of 16QAM modulation
In which 3GPP Release did HSPA offer an uplink speed of 5.7 Mbps?
Release 6
What technology enhancement was introduced in 3GPP Release 10 for HSPA?
10 MHz & 16-QAM D/L
What was one of the main reasons why changes were required for HSPA in UMTS networks?
To enable UMTS networks to operate better for current applications.
What is the peak raw data rate for HSDPA?
14 Mbps
What does HSUPA stand for?
High Speed Uplink Packet Access
Which component of 3G UMTS HSPA addresses the link between the base station and the user equipment for the downlink?
HSDPA
What is the capacity increase provided by HSUPA compared to Release 99 services?
Twice
Which technology in 3G UMTS HSPA offers around three times the capacity of UMTS technology defined in Release 99?
HSDPA
What advantage does the introduction of 3G HSPA offer regarding system updates?
It can often be rolled out through a software update
'There are two main components to 3G UMTS HSPA, each addressing one of the links between the base station and the user equipment.' - Which component addresses the link for the uplink?
HSUPA
What key feature did the 3GPP Release-5 introduce?
IP Multimedia Subsystem (IMS)
Which UMTS specification was functionally frozen in December 1999?
3GPP Release-99
In which phase did the 3GPP introduce an all IP-Core Network with Soft Switching?
3GPP Release-4
What technology allowed the flow of data to pass through a media gateway within the core network in 3GPP Release-4?
Soft Switching
Which release was frozen in March 2001 due to newer releases being planned for introduction?
3GPP Release-4
Learn about the transition from the 1st generation (1G) of mobile networks using advanced mobile phone service (AMPS) to the emergence of the 2nd generation (2G) with digital voice standards like CDMA. Explore how technology evolved in the early 80's and 90's in the mobile communication industry.
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