5G NR QoS Parameters
3GPP specification 23.501 defined the following 5G QoS Parameters as part of QoS Implementation. 5G QoS Identifier (5GQI) Allocation and Retention Priority (ARP) Reflective QoS Attribute (RQA) Notification Control Flow […]
NB-IoT PRBs (Physcial Resource Blocks) for In-Band Operation
NB-IoT or NB-LTE is a new 3GPP radio-access technology. NB-LTE requires 200 kHz minimum system bandwidth for both downlink and uplink, respectively. The choice of minimum system bandwidth enables a […]
5G NR RACH Preamble Types: Long and Short Preambles
A preamble is send by UE to gNB over PRACH channel to obtain the UL synchronization. Similar to LTE, in 5G NR there are 64 preambles defined in each time-frequency […]
Narrow Band IoT- Signalling Radio Bearers (SRBs)
Signalling Radio Bearers (SRBs) are the Radio Bearers (RBs) that are used by UE for transmitting and receiving RRC messages with the eNodeB. For NB-IoT UE, only the following radio […]
Features Comparison: NB-IoT UE Vs LTE UE
Table here list the features comparison between Narrow Band (NB) – IoT UE and Long Term Evolution (LTE) UE Features Narrow Band IoT UE LTE UE Master Information Block (MIB) […]
5G NR Total Transmit Power | Maximum Cell Transmit Power | Reference Signal Power
The Reference Signal Power and the total transmit power of the cell can calculated by using a single channel power using following formula, Maximum Transmit Power indicates the transmit power […]
What is directivity in a coupler ?
Directional couplers are four-port circuits where a defined amount of the electromagnetic power fed at the input port in a transmission line is coupled to a port (known as coupled […]
5G NR Physical Layer Vulnerability- Jamming, Sniffing and Spoofing
3GPP New Radio (NR) will be primary 5G standard moving forward. Cellular networks are no longer fixed to provide commercial services only, these are also being used to emergency service, […]
5G NR Measurements: RSRP, RSSI, RSRQ and SINR
In LTE, the UE measurements are done for RSRP, RSRQ and SNR associated with CRS (Cell Specific Reference Signal) . 5G NR uses SS (Synchronization Signal) and CSI (Channel State […]
What is the difference between co-located BTS and co-existed BTS and explain the required 3GPP compliance
Co-existence with other systems The manufacturer shall declare whether the BS under test is intended to operate in geographic areas where one or more of the systems GSM850, GSM900, DCS1800, […]