I am studying the possibility to deploy a network-based Distributed Mobilityⁱ Management (DMM) solution in LTEⁱ but a tunnel between Serving GW (where the distributed mobility anchoring function will be placed) is needed when the UEⁱ performs intra E-UTRANⁱ handover on the S1ⁱ interface (X2ⁱ HO is not available).

The question therefore is:

For MU-MIMOⁱ in the DL the UEⁱ provides information which precoding matrix should be used. What would be the optimum and the realistic update interval?

Hi All,

i have one doubt. In pdcp integrity verfication there are two keys mentioned in spec KRRCint and KUPint. When KRRCint will be used and KUPint will be used? . but there is no integrity verification for user plane data.

Is the Remote Radio Head in LTEⁱ standardised? Which parts of the RRH are standardised like the interface CPRI?

Does anybody have opinions on what level of external interference in the reverse link is tolerable before performance begins to degrade. Lets say there is broadband interference increasing the reverse link noise floor of the BTS by 5dB. Is that generally a performance problem?

Hi,
Is there any limitation of packet filters per bearer(TFT).

This article might be of interest to you: http://www.tekcomms.com/success-stories/7-weeks-prove-success-your-lte-network

Here is the introductory paragraph: There are hundreds of scenarios that could impact your LTEⁱ network. It’s the ones lying dormant and uncovered that present the biggest challenges.

S-CRITERION

The cell selection criterion S is a pre-condition for suitable cells.
The conditions for E-UTRANⁱ, UTRAN FDD and GSM cells are listed in the figure.

R – CRITERION – CELL RESELECTION

The cell reselection evaluation process depends on whether Hierarchical Cell Structure (HCS) is used or not. In order to perform cell reselection UEⁱ measures and ranks the neighbor cells.

Hi

IM involving in LTEⁱ project of FCAPS. Can anyone share the KPI for TDD LTE.

Thanks

Jay

In Initial UL sync up of UEⁱ with ENB (after decoding and obtaining all info present in SIB2 -- DL sync) , when will UE Tx RACH preamble
1) where --he knows by BW and frequency offset of PRACH

but as UL timing is not synchronized, when it will transmit ...or is it that it transmits anytime and ENB decodes it (due to awesome properties of ZC prime sequence)

Hi;

We are trying to estimate the extra effort for a Donor-eNodeBⁱ different from an eNodeB.

It is written at 36.300 overall description that DeNB has S1ⁱ/X2ⁱ proxy functionality and S11 termination point and S/GW, P/GW function for supporting RN.

for example: 2.6GHz+1800MHz CA, DD800+1800MHz/2.6GHz CA, Qualcomm or other chipset vendor already support it or have some roadmap?

Sir

do you have tools for Security analysis and testing of LTEⁱ Advanced(Integrity,Confedentiality and Authentication Verification tools)?

if you do have this then Inform me,I want to use those tools also for my PhD research.

Hi experts,

My question is what is maksimum FFT size in LTEⁱ-A DL and UL with CA? For release 8 it is 2048. Is it increased with Carrier Aggragation for example 20+20+20 Mhz?

FG