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Above is practical result of Transport Bandwidth Change impact and its difficult to isolate throgh OSS KPIs , It needs GTP analysis along with field testing  1. Site was already congested and >95% Radio Capacity was used  2. By Changing Transport BW from 200Mbps to 400Mbps site comsumes more 20% traffic with 110% Radio capacity used and better performance . 3. There is no impact seen in OSS KPIs but field test shows >85% throghput degradation. 4. Packet loss and Latency was all across reason for user experiance degradation. 5. One Major thumb rule that i came across that                            Transport BW  > (Sum of Cell throughput of site ) * 118% What is GTP  and GTP Loss ? 1. GPRS Tunneling protocol is an important IP based protocol used in GSM, UMTS and LTE core networks. It is used to encapsulate user data when passing through core network and also carries bearer specific signali...

We are not operating on single RAT!!!!!!! Invitation of IMD[ intermodulation distortion] When multiple air interface technologies coexist, mutual interference will inevitably occur between different working frequency bands (for the same device, we call this interference “self-interference (SI)”) As a typical heterogeneous network, the fifth generation (5G) mobile communication system must be compatible with existing technologies (such as Long-Term Evolution (LTE)) and support multiple types of 5G New Radio (5G NR) so SI will came in picture everywhere  As device is same and its competible for multi RAT then it creates Harmonics as a result of SI Even/Odd Harmonics  Intermodulation (IM) or intermodulation distortion (IMD) is the amplitude modulation of signals containing two or more different frequencies, caused by nonlinearities or time variance in a system. The intermodulation between frequency components will form additional components at frequencies that are not just at har...

  Hello readers many of us will be wandring and might be struggling to take decission for which LTE technology and MIMO you should prefer fo capacity  In earlier blog  https://mytelcolearning.blogspot.com/2022/04/basics-of-capacity-planning-in-lte-dont.html i had described basic of capacity planning guideline  As PDSCH is the main resource used for >94% data uses by any means in downlink Total Data Volume[100%] = DL[>94%] +UL [<6%] So lets have a view on above resource distribution details along with Channel Bandwidth and MIMO One Major Takaway in terms of PDSCH availability 15MHz 4x4 TDD will have same capacity as 10MHz 2x2FDD

Importance of Simplified RU A simplified RU because only the RF functions remain at the remote site. This small RU costs less, uses less power, and more easily fits on a tower. Operators can perform most network upgrades at the CU, requiring fewer site visits. The simplified RU can handle multiple Radio Access Technologies (RAT) further reducing the footprint of the remote mast, which must support multiple cellular generations There are 2 types of protocol used for fronthaul between RE/eRE to REC/eRCE these protocols are CPRI and eCPRI The Purpose of development of CPRI and eCPRI is as follows.  Radio BSs should offer flexibility during deployment to MNOs( mobile network operators). This is achieved by simplifying BS architecture by dividing radio BS functionality into two modules viz. eREC and eRE. Both parts may be physically separated where in eRE is kept close to RF antenna where as eREC kept at a distant end. Both are connected via a transport network. The eREC contains part o...