Which of the following parameters In the NR MIB message indicates the time-domain position of CORESET 0?
Answer(s): D
In 5G NR, the Master Information Block (MIB) message is transmitted on the Physical Broadcast Channel (PBCH) and contains information that is used by the UEs to synchronize to the cell and obtain basic system information. The parameters in the NR MIB message that indicate the time- domain position of CORESET 0 are the least significant four bits of PDCCH-configSIBl.
Which of the following synchronization rasters can be used by a UE during a cell search?
Answer(s): A,B,C
During a cell search, a UE uses synchronization signals to synchronize to a cell and obtain basic system information. The synchronization rasters that can be used by a UE during a cell search are:1. 17.28MHz: This is the synchronization raster that is used for the primary synchronization signal (PSS) and the secondary synchronization signal (SSS) in 5G NR.2. 1200kHz: This is the synchronization raster that is used for the primary synchronization signal (PSS) and the secondary synchronization signal (SSS) in 4G LTE.3. 1.44MHz: This is the synchronization raster that is used for the cell-specific reference signal (CRS) in 4G LTE.
Which of the following parameters in core network subscription information restricts the non-GBR rate for a UE?
Answer(s): A
In 5G Core network, the core network subscription information contains parameters that are used to manage the resources of a UE.1. UE-AMBR (UE Aggregate Maximum Bit Rate) : It's the maximum bit rate that is allocated to a UE for non-guaranteed bit rate (non-GBR) services. It controls the non-GBR rate for a UE.
What is the typical output power of a 64T64R AAU?
According to Huawei's 5G AAU Product Brochure, a 64T64R AAU typically has a maximum output power of 40W. This power is split between the 64 transmitters, so each transmitter has an output power of 0.625W. The output power of an AAU can be adjusted depending on the specific requirements. Sources: [1] Huawei. "5G AAU Product Brochure." Huawei, 2019. https://www.huawei.com/en/products/5g/aau-product. [2] Wang, X., Ge, X., and Zhang, J. "Analysis of base station power consumption in 5G ultra-dense networks." IEEE Access, vol. 7, pp. 85812- 85823, 2019. https://ieeexplore.ieee.org/document/8749683.
When a GPS divider is used, the maximum distance between the GPS antenna and the BBU is shortened.
When a GPS divider is used, the maximum distance between the GPS antenna and the BBU is shortened. This is because the divider splits the signal from the antenna into multiple signals that can be distributed to multiple BBUs, thus reducing the distance between the antenna and the BBUs. Sources: [1] Rymaruk, O., and Kovalenko, I. "GPS signal dividers for cellular base stations." IEEE Antennas and Propagation Magazine, vol. 56, no. 3, pp. 121-126, 2014. https://ieeexplore.ieee.org/document/6833669. [2] Albasri, N., and Al-Naffouri, T.Y. "GPS signal distribution for a 4G/5G distributed antenna system." IEEE Access, vol. 7, pp. 100371-100382, 2019.https://ieeexplore.ieee.org/document/8793094.
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