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Tag: LTE

3GPP Evolution for MIMO

Released 3GPP standards on MIMO are shown in below image. As you know, Coordinated Multipoint (CoMP) is a type of Cooperative MIMO, in which data and channel state information (CSI) are […]

September 20, 2020November 5, 2020 Author 3GPP Specification, 5G, 5G Network Planning, 5G NR, 5G Physical Layer, NR, RF Optimisation

4G LTE Important QXDM Log Packets

QXDM is most widely used tool in wireless 4G,5G technology to capture Qualcomm based Mobile signalling and data details logs for debugging purpose. Whether it is Field testing or Lab […]

August 29, 2020August 29, 2020 Author RRC Signalling, Signaling, TDD LTE, Wireless Testing

5G NR Measurement – Serving Cell and Neighbor Cell

In 5G NR, for the procedures such as handover to a stronger cells or adding a new Carrier Component (CC) in the case of Carrier Aggression, it is required to […]

January 17, 2020January 17, 2020 Author 5G, New Radio, NR, RF Basics, RRC, RRC Signalling, Signaling

5G NR Cell Access Control

Radio Access barring control refers to a traffic congestion control mechanism to secure and ensure the success of critical communications calls such as emergency calls by restricting connection requests from […]

December 21, 2019July 21, 2020 Author 5G, Call Flow, NAS Signalling, New Radio, NR, RRC Signalling, Tech Fundas

5G NR Network Relationship – Neighbor Planning

In any telecommunication technology starting from 2G to 5G, Neighbor relation or to say Neighbor planning is an important activity. Neighbor relation information is very critical for cell re-selection while […]

December 6, 2019July 21, 2020 Author 5G, 5G Network Planning, Future Network Optimization, LTE, New Radio, NR, RF Basics, Tech Fundas

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, […]

June 23, 2019June 23, 2019 Author 5G, LTE, NR, RF Basics, Tech Fundas

5G NR User Plane Latency

The definition of user plane latency as per 3GPP TR 38.913, is  “the time to successfully deliver an application layer packet/message from the radio protocol L2/L3 SDU entering point to […]

June 20, 2019July 10, 2020 Author 5G, 5G NR, Future Network Optimization, Interviews, New Radio, NR, Tech Fundas

What parameters impact the EVM of transmitter chain ?

The error vector magnitude or EVM is a measure used to quantify the performance of a digital radio transmitter or receiver. A signal sent by an ideal transmitter or received by a receiver would have all constellation […]

June 1, 2019June 1, 2019 Author 5G, LTE, New Radio, NR, RF Basics, TDD LTE, Tech Fundas, Test Report, Wi-Fi

Robust Header Compression – ROHC

ROHC is a header compression protocol/algorithm that can be used compress the header of different IP packets. In normal case without compression  IPv4 header is 40 bytes and IPv6 header […]

May 19, 2019July 21, 2020 Author 5G, Interviews, LTE, Tech Fundas, Voice Services, VoLTE

TTI Bundling for better HARQ and Latency

TTI bundling enables a data block to be transmitted in consecutive TTIs, which are packed together and treated as the same resource during the scheduling process. TTI bundling makes use […]

May 15, 2019July 21, 2020 Author Future Network Optimization, Interviews, LTE, RF Basics, TDD LTE, Tech Fundas, VoLTE

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