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Which of the following statements about the NR slot structure are correct? (Choose All that Apply)
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.
Which of the following parameters is related to the frequency-domain position of PBCH DMRSs?
PCI (Physical Cell Identity) is related to the frequency-domain position of PBCH DMRSs (Physical Broadcast Channel Demodulation Reference Signals)
The PBCH DMRSs are used to demodulate the Physical Broadcast Channel (PBCH) which contains system information such as the cell identity, system bandwidth, and the downlink carrier frequency.
The PBCH DMRSs are transmitted in the frequency domain, and their position is determined by the Physical Cell Identity (PCI). The PCI is a unique identifier assigned to each cell in the network, and it's used to identify the cell and its system information.
So, the correct answer is B. PCI. It's worth noting that the other parameters you mentioned are also related to the 5G system information and the cell configuration. Cell ID is a unique identifier assigned to each cell, SI-RNTI (System Information RNTI) is a unique identifier assigned to the system information, and Bandwidth is the amount of frequency resources allocated to the cell.
After the cell search is complete, a 5G UE automatically selects a PLMN based on the priority sequence. Which PLMN will the UE preferentially select for registration?
According to the 3GPP TS 24.008 V15.2.0 (https://www.3gpp.org/DynaReport/24008.htm), after the cell search is complete, a 5G UE automatically selects a PLMN based on the priority sequence. The UE will preferentially select U-PLMN (User Preferred PLMN) for registration. U-PLMN is the PLMN that the user has selected manually or that the user has previously registered with, and it has the highest priority. If U-PLMN is not available, the UE will select RPLMN (Registered PLMN), which is the last registered PLMN. If RPLMN is not available, the UE will select HPLMN (Home PLMN), which is the PLMN that is permanently stored in the UE. Finally, if HPLMN is not available, the UE will select EHPLMN (Equivalent HPLMN), which is the PLMN with the same MCC and MNC as HPLMN.
5G inherits the frame structure of 4G, but the slot length can be adjusted based on different SCSs. Which of the following is not a 5G slot length?
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.
After the NR base station commissioning is complete and before services go online, which of the following must be set for the NE status?
According to the Huawei SA Networking Product Design Guide (https://www.huawei.com/en/doc/e_huaweidoc/pdf/HW_051525), after the NR base station commissioning is complete and before services go online, the NE status must be set to 'Normal'.
