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Posted on June 17, 2018   141 views    

Uplink and Downlink transmissions in NR are organized into frames. Each frame has a duration (\(\text{T}_{f}\)) of 10 ms. Frame is divided into two half-frames of duration 5 ms and each of these half-frames consists of 5 subframes. The duration (\(\text{T}_{sf}\)) of single subframe ...

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NG-RAN Architecture of 5G NR

Posted on June 4, 2018   74 views    

Radio stacks in NR is split to enable SDN and NFV, thereby reducing the costs. Also the splits allows load management, real-time performance optimization, flexible hardware implementations and variable latency. Following figure shows centralized deployment

Centralized  Architecture
Centralized Deployment

NG-RAN architecture consists of set of gNBs. In NR, Functions of gNB are ...


Bandwidth Parts in 5G NR

Posted on June 4, 2018   126 views    

Carrier Bandwidth Part is a contiguous set of physical resource blocks,selected from a contiguous subset of the common resource blocks for a given numerology on a given carrier.

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Posted on June 4, 2018   69 views    

Two frequency ranges (FR) are defined in 3GPP TS 38.101-1, FR1 and FR2. FR1 is also called sub-6 GHz bands and FR2 is also called as millimeter wave bands. Following table shows the ranges

Frequency Range Designation Frequency Range
FR1 450 MHz – 6000 MHz
FR2 24250 MHz – 52600 MHz ...
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Posted on June 4, 2018   98 views    

NR supports multiple numerlogies . Subcarrier Spacing in NR is given by the following formula. Subcarrier spacing is dependent on the carrier frequency because of the phase noise and doppler.

$$ \Delta \textit{f} = 2^\mu.15 \text { KHz } \text { where μ = 0 to 5 } $$

Following table is given in section 4 ...

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