5g technology
NPBCH stands for narrowband physical broadcast channel similar to PBCH in LTE Technology. The Narrow Band-Physical Broadcast Channel (NPBCH) is used to deliver the NB-IoT Master Information Block (MIB), which provides essential information for the NB-IoT UE to operate in the NB-IoT network. Narrow Band-Physical Broadcast Channel (NPBCH) uses a 640 ms TTI, but within … Read more
A Work Item of the detailed specifications of 5G RAN for 5G commercial services is being conducted in 3GPP. The non-standalone NR specifications, which enable early deployment of NR carriers by exploiting LTE/LTE-Advanced carriers as the master node carriers, were completed in December 2017. In June 2018, the standalone NR specifications, which require full NR … Read more
In NR BWP/CA NR Physical Layer Specifications in 5G, the maximum bandwidth per carrier is much larger than in LTE: 100 MHz at frequencies below 6 GHz and 400 MHz at higher frequencies. For carriers operated with such a large bandwidth, NR supports the BandWidth Part (BWP) concept whereby user equipment can use smaller bandwidths … Read more
7.1 Transmit Power Control Taking Beam Control into Consideration ( NR Physical Layer Specifications in 5G) In NR, Transmit Power Control NR Physical Layer Specifications in 5G, since transmitting/receiving beams can be formed in both the base station and the user equipment, transmission power control is specified by taking into consideration the beamforming op- eration, which causes … Read more
Tables 2 and 3 show the Modulation and Channel Coding Schemes 5G NR Physical Layer and channel coding schemes that can be used for NR downlink and uplink communication, respectively. Modulation and Channel Coding Schemes 5G NR Physical Layer As the primary modulation scheme, in addition to the schemes specified since Release 8 LTE, 256QAM … Read more
In NR, as in LTE, the downlink data channels and uplink data channels are scheduled based on the Downlink Control Information (DCI). The DCI is transmitted and received via the Physical Downlink Control Channel (PDCCH). As in LTE, it is Scheduling/HARQ NR Physical Layer Specifications in 5G. possible to use the frequency domain resource assignment field … Read more
4.1 MIMO Transmission Method (MIMO/Beamforming / NR Physical Layer Specifications in 5G) In the high-frequency band, it is very important to obtain a high beamforming gain(Gain: One of the radiation characteristics of an antenna. An indicator of how many times larger the radiation strength in the antennaʼs direction of peak radiation is relative to a … Read more
A user equipmentʼs initial access in NR is per- formed according to a procedure that involves the steps of detecting a Synchronization Signal (SS), acquiring broadcast system information, and es-tablishing connection with the network by a ran- dom access procedure. 3.1 SS/PBCH Block As in LTE, the SS in NR consists of two signals: a Primary … Read more
2.1 Frame Structure/Duplex Mode NR Physical Layer Specifications Frame Structure/Duplex Mode NR Physical Layer Specifications Support for New Subcarrier Spacings NR adopts a radio access scheme called Orthog- onal Frequency Division Multiplexing (OFDM)( OFDM: A multi-carrier modulation format where information signals are modulated with orthogonal subcarriers. A type of digital modulation scheme where information is … Read more
What is Active Antenna System (AAS) and its 3D Aspect, Why AAS for 5G? Active Antenna System An active antenna is an antenna that contains active electronic components like antenna-integrated radio designs place the RF module next to the passive antenna to reduce cable losses. Active Antenna does not need to be merely passive elements. … Read more