5G AND VoNR Flashcards
5G is IMT standard _________
1) IMT-2000
2) IMT-Advanced
3) IMT2020
IMT2020
spectrum efficiency unit
1) Mbits/s/m2
2) bits/s/m2
3) bits/s/Hz
4) Mbits/s/Hz
bits/s/Hz
Area Traffic Capacity unit
1) Mbits/s/m2
2) bits/s/m2
3) bits/s/Hz
4) Mbits/s/Hz
Mbits/s/m2
5G Phase-1
1) does not meet all the IMT2020
requirements
2) meets all the IMT2020
requirements
does not meet all the IMT2020
requirements
The 5G access network is broken down into a collection of ________ Areas
1) Location areas
2) Tracking areas
Tracking area
identified with a TAI (Tracking Area Identity)
TAI stands for
1) Traffic Area Identity
2) Tracking Area Identity
Tracking Area Identity
In Dual connectivity (DC), Master RAN Node
1) controls secondary RAN Node
2) maintains a control connection with the core network
3) share a data plane connection with secondary for media splitting
4) all the above
all the above
5G RAN nodes could be
1) A traditional 4G eNB which connects to EPC
2) 4G ng-eNB
3) A 5G gNB
4) all the above
all the above
_____ connects to the 5G core network
1) 4G eNB
2) 4G ng-eNB
4G ng-eNB
Bearer splitting can be done by
1) Master RAN node
2) Secondary RAN node
3) Both
Both
World radiocommunication conferences (WRC) are held
1) every year
2) every three to four years
every three to four years
it is the job of ___________ to review and revise the Radio Regulations, the international treaty governing the use of the radio-frequency spectrum and the geostationary-satellite and non-geostationary-satellite orbits
World Radiocommunication Conferences (WRC)
last WRC (ITU World Radiocommunication Conference) held is
1) WRC-20
2) WRC-23
WRC-23 at Dubai UAE
multiple access technique used in 5G
1) CP-OFDM
2) CQ-OFDM
3) C-OFDM
CP-OFDM (Cyclic Prefix – Orthogonal
Frequency Division Multiplexing)
CP-OFDM stands for
Cyclic Prefix – Orthogonal
Frequency Division Multiplexing
5G can use up to
1) 64 QAM
2) 128 QAM
3) 256 QAM
4) 512 QAM
256 QAM
C-RAN stands for
Cloud RAN
This will house much of the processing capability that would normally be found at the gNB
1) C-RAN centralized node
2) C-RAN distributed node
C-RAN centralized node
This would house the radio transmit/receive capability only
1) C-RAN centralized node
2) C-RAN distributed node
C-RAN distributed node
Cloud RAN adopts virtualization techniques (T/F)
T
choose correct item(s)
non-standalone implementation
1) gNodeB connects to the mobile via an eNodeB
2) eNodeB connects to the mobile via an gNodeB
3) gNodeB connects to the 5G core via an ng-eNodeB
4) ng-eNodeB connects to the 5G core via an gNodeB
1 and 3
gNodeB connects to the mobile via an eNodeB
gNodeB connects to the 5G core via an ng-eNodeB
non-standalone implementation
1) Uses EPC
2) does not use EPC
uses EPC (Evolved Packet Core)
Within the core, _______ is utilized to provide a highly scalable, adaptive network architecture.
1) SMF
2) UDM
3) NFV
4) gNodeB
NFV (Network Functions Virtualization)
in 5G core, AMF stands for
Access and Mobility Management
in 5G core, SMF stands for
Session Management Function
in 5G core, UPF stands for
User plane function
in 5G core, UDM stands for
Unified Data Management
in 5G core, PCF stands for
Policy Control Function
in 5G core, AUSF stands for
Authentication Server Function
___ PDU Session(s) is/are established per Data Network for a given device.
Within a PDU Session, _____ QoS Flows
1) one, one
2) one, many
3) many, one
4) many, many
2) one PDU Session, many QoS flows
Within a PDU Session, for voice services, separate QoS Flows may be established to handle the differing transport requirements of _________
1) signalling
2) voice
3) both
4) none
signalling and voice
Within a PDU Session, for internet services, _____ QoS flow(s) may be required.
1) one
2) many
only one QoS Flow is required
which provides Best Effort service
_______ play a key role in the device registration process (including security), as well as track the device’s mobility for reachability and paging purposes
1) UPF
2) AMF
3) SMF
4) UDM
AMF Access and Mobility Management
_________ manages the PDU sessions associated with an individual subscriber
1) UPF
2) AMF
3) SMF
4) UDM
SMF Session Management Function
_____ is responsible for allocating a suitable IP address to the device (IPv4 or IPv6), assuming an IP PDU Session is active
1) UPF
2) AMF
3) SMF
4) PCF
SMF Session Management Function
________is the only network element within the core that is involved with user plane traffic
1) UPF
2) AMF
3) SMF
4) PCF
UPF User Plane Function
_______ will routinely interact with the PCF to determine exactly which Data
Networks the device is allowed to connect to, as well as the QoS profile it can expect to be allocated
1) UPF
2) AMF
3) SMF
4) PCF
SMF Session Management Function
_______ is responsible for ensuring data is placed on the correct downlink QoS flow, as well as ensuring that any dynamic policy rules are suitably enforced
1) UPF
2) AMF
3) SMF
4) PCF
UPF User Plane Function
(policy rules are provided by the PCF
via the SMF)
PCF: Policy Control Function
SMF: Session Management Function
policy rules are provided by the PCF
via the _____
1) UPF
2) AMF
3) SMF
4) PCF
SMF Session Management Function
The ___is essentially a central repository of subscriber information which can be used by several different network elements.
1) UPF
2) AMF
3) SMF
4) UDM
UDM Unified Data Management
includes access restrictions, mobility restrictions, Data Network QoS profiles and roaming permissions
PCF dynamic policy decisions are based on
1) congestion
2) subscriber geolocation
3) billing
4) all
all
PCF can
1) establish correct QoS
2) terminate a PDU session
3) both
4) none
both
Data Network can also potentially provide session level information, such as the subscriber wishing to make a call or view a video. In all of these scenarios, the PCF can dynamically change the way in which the subscriber receives their service, from establishing the correct QoS Flows in the network to completely terminating a PDU Session.
A key element of the NFV concept is MANO which stands for ________
Management and Orchestration
NFV (Network Functions Virtualization)
all network slice instances would use the ________ AMF that has been assigned to the subscriber
1) same
2) its own
same AMF
devices on separate network slices will be considered to be on ______
1) completely separate networks
2) same network
completely separate networks
_______ is the voice service enabler that uses the 5G core
1) IMS
2) AMF
IMS (IP Multimedia Subsystem)
Voice Over NR network Architecture consist of 5G RAN, 5G Core and IMS network
IMS stands for
IP Multimedia Subsystem
VoNR uses QoS Flow with ______ to transfer the speech packets after connection establishment
1) 5QI= 1
2) 5QI= 5
5QI= 1 is GBR
(GBR:Guaranteed Bit Rate)
VoNR uses a QoS Flow with _____ for SIP signaling messages
1) 5QI= 1
2) 5QI= 5
5QI= 5 is non-GBR
(GBR:Guaranteed Bit Rate)
3GPP has recommended _______ codecs for 5G
1) EVC
2) EPC
3) EVS
4) EVS
EVS (Enhanced Voice Services)
5G EVS codec sampling frequency
1) Narrowband
2) Wideband
3) Super Wideband
4) Full band
All can be used
The Voice Traffic flow with _____ protocol over dedicated PDU session
1) FTP
2) RTP
3) SFTP
4) HTTP
RTP protocol
Real Time Transport Protocol.
RTP must be used with UDP.
It is very sensitive to packet delays and less sensitive to packet loss.
Voice Over NR network Architecture supports Service based interface using ____ protocol.
HTTP protocol
5G Reference Point Archhitecture is
1) Standalone (SA)
2) Non Standalone (NSA)
Standalone (SA)
(NSA is Service Based Archhitecture)
5G Service Based Archhitecture is
1) Standalone (SA)
2) Non Standalone (NSA)
Non Standalone (NSA)
(SA is Reference Point Archhitecture)
