Huawei HCIA-5G-RAN V3.0 H35-480_V3.0 Exam Questions

Answer : A

Cloudification of 5G wireless networks can significantly improve the user rate. Cloudification refers to the process of virtualizing the functions of a network and running them on commodity hardware in a data center, rather than on dedicated hardware in the network itself. In the case of 5G wireless networks, this can be achieved by virtualizing the Base Station (gNB) functions and running them on a cloud platform. This allows for more efficient use of resources and better scalability, which can result in an improved user rate.

Additionally, Cloud-RAN (C-RAN) architecture, which is a cloud-based centralization of the baseband processing functions can also be used to improve the user rate by reducing the number of active base stations required in a given area, and also by allowing for more efficient management of resources and more flexible deployment of services.

However, it's worth noting that the improvement of the user rate is not only limited to cloudification, but it's also related to many other factors such as network design, optimization, and management.

Answer : A, B, D

1. NR downlink slots are used to transmit downlink data and control information, such as channel state information (CSI) and downlink control information (DCI). B. Downlink self-contained slots are also called as 'Downlink Shared Channels (DL-SCH) slots', they can be used to transmit downlink data, but also can be used to transmit uplink control information (UCI) and sounding reference signals (SRS) in the downlink direction.

2. The symbols in a slot can be classified as downlink, uplink, or flexible, meaning that the symbols can be used to transmit data in either direction, or to transmit control information.

It's worth noting that the NR slot structure is designed to be flexible and efficient, it allows for a variable slot duration and a variable number of symbols, depending on the subcarrier spacing and the number of resource blocks used. This flexibility is intended to support a wide range of services and traffic types.

Answer : A

The mmWave range is a new spectrum range for 5G NR, and it supports the largest bandwidth in a cell. However, it has poor coverage capabilities, as it requires high performance from RF components and generally applies only to line of sight (LOS) coverage. This makes it challenging to use in many applications, as it requires careful planning and implementation in order to ensure effective coverage.

5G Implementation Guidelines: NSA Option 3 - Future Networks

https://www.gsma.com/futurenetworks/wiki/5g-implementation-guidelines/

5G RAN - Radio Access Networks - Ericsson

https://www.ericsson.com/en/ran

Understanding mmWave for 5G Networks 1 - 5G Americas

https://www.5gamericas.org/wp-content/uploads/2020/12/InDesign-Understanding-mmWave-for-5G-Networks.pdf

The millimeter wave (mmWave) range is new for 5G NR (New Radio). It supports the largest bandwidth in a cell but has poor coverage capabilities. It requires high performance from RF components and generally applies only to line of sight (LOS) coverage.

The mmWave range is considered to be the higher frequency range of the 5G spectrum and it includes frequencies above 24GHz, such as 28GHz, 38GHz and 60GHz. These frequencies offer a large amount of bandwidth, which is necessary to support high-data rate services, such as ultra-high-definition video streaming, virtual reality, and the internet of things.

However, the mmWave range has poor coverage capabilities because the signals are easily blocked by obstacles such as buildings and trees, and they also have a shorter propagation distance than lower frequency bands. Therefore, mmWave range is generally used for high-density urban areas, and indoor environments.

Additionally, RF components for mmWave have to meet high performance requirements, such as high linearity, high gain and high power handling capability. Also, the mmWave signals are highly sensitive to the presence or absence of a clear line of sight (LOS) between the transmitter and the receiver, which makes it less reliable for non-line-of-sight (NLOS) coverage.

Answer : B

5G inherits the frame structure of 4G, but the slot length can be adjusted based on different subcarrier spacings (SCSs). The 5G slot length can be adjusted from 0.25ms to 1ms, with each slot containing one or more symbols.

The shorter the slot length, the higher the frequency and the less the coverage, but it allows for more efficient use of resources and higher data rates. The longer the slot length, the lower the frequency, the better the coverage, but it's less efficient in terms of resource usage and data rate.

So, the correct answer is B. 10ms, is not a 5G slot length. It's worth noting that the 5G standard defines several slot lengths, and the choice of slot length depends on the specific use case and the requirements of the service being supported.

Answer : A, C, D

NAS (Non-Access Stratum) procedure management in 5G involves three specific actions: registration management, session management, and RRC connection setup. Registration management involves sending and receiving of NAS messages related to the establishment of user-network connections, such as attach and detach procedures. Session management involves sending and receiving of NAS messages related to the management of user session related information, such as security context management. RRC connection setup involves sending and receiving of NAS messages related to the establishment, modification, and release of RRC connections. RRC reestablishment is not involved in NAS procedure management in 5G.

TS 138 331 - V15.2.1 - 5G; NR; Radio Resource Control (RRC ...

https://www.etsi.org/deliver/etsi_ts/138300_138399/138331/15.02.01_60/ts_138331v150201p.pdf

5g nr fr1 non-standalone ue rf conformance testing

https://scdn.rohde-schwarz.com/ur/pws/dl_downloads/dl_application/application_notes/1sl/1SL368_0e_5G_NR_UE_RF_conformance_38.521-3.pdf

TS 138 331 - V15.3.0 - 5G; NR; Radio Resource Control (RRC ...

https://www.etsi.org/deliver/etsi_ts/138300_138399/138331/15.03.00_60/ts_138331v150300p.pdf

Answer : C

H110V6 refers to a scenario where there are 110 horizontal and 6 vertical antenna elements installed on the gNodeB, which is ideal for providing coverage in high-rise office buildings. The high number of horizontal antenna elements allows for high-density deployment, which can improve the coverage and capacity of the network in these types of environments.

'H110V6 can be used to cover high-rise buildings, such as office buildings and hotels, which have complex indoor environments. The high number of horizontal antenna elements can provide strong coverage and capacity.' in Huawei official website.

Answer : D

The non-standalone (NSA) mode of 5G NR refers to an option of 5G NR deployment that depends on the control plane of an existing 4G LTE network for control functions, while 5G NR is exclusively focused on the user plane.[7][8]This is reported to speed up 5G adoption, however some operators and vendors have criticized prioritizing the introduction of 5G NR NSA on the grounds that it could hinder the implementation of the standalone mode of the network