Pilot Channel failure - High Downlink Interference

Symptoms:

From the drive test, following symptoms will be observed by using TEMS:

• Received Ec/No of the pilot channel is less than –16dB and

• Received RSCP of the pilot channel is high enough to maintain the connection,e.g. >-   100dBm and

• DL RSSI is very high and

• The connection finally drops.

Good Excel Sheet on CPICH Calculator

What are the functionality of eNodeB?

E-UTRAN consists solely of the evolved Node B (eNB), which is responsible for all radio interface functionality.

eNB is the RAN node in the EPS architecture that is responsible for radio transmission to and reception from UEs in one or more cells.
The eNB is connected to EPC nodes by means of an S1 interface.The eNB is also connected to its neighbor eNBs by means of the
X2 interface. Some significant changes have been made to the eNB functional allocation compared to UTRAN. Most Rel-6 RNC
functionality has been moved to the E-UTRAN eNB. Below follows a description of the functionality provided by eNB.

Good PDF Document on LTE Functionality

How to get HSDPA users in Ericsson System?

This is the formula:

HSDPA users average cell:

HS_Users = (pmSumBestPsHsAdchRabEstablish) / (pmSamplesBestPsHsAdchRabEstablish)

Click on counter to view detail description in counter.

If you know another way than please share it.

Know more on HSDPA Low Throughput Analysis

How can I find RRU Type in Ericsson NodeB?

There are several ways to Find RRU type in Node B.

For Ericsson System connect through MOSHELL and

Enter command cabx you can find the RRU type.

Also enter INVH Command for RRU and DUW type.

If You Know More Ways to Know than Discuss Here

UMTS/HSPA to LTE Migration

UMTS/HSPA to LTE Migration- A white Paper from Motorola Maximize the life and value of existing assets while achieving a true 4G network

Download Full lenth Paper from Here

Contents
Abstract
- A Dynamic Industry and Technology Evolution
- LTE Performance
- UMTS " LTE Network Architecture Evolution
- Determine the Business Case for LTE
- Subscriber Device Availability
- Deployment Considerations
- Seamlessly Connected Network
- Spectrum Implications
- Maximize Existing Assets
- UMTS to LTE Upgrade Strategy
- UMTS/LTE Architecture
- Functional Elements
- UMTS / HSPA RAN Site Upgrade to LTE
- Backhaul Site Upgrade to LTE
- LTE Voice
- LTE Video

Download Full lenth Paper from Here

Atoll to Google earth

Atoll to Google earth
Very Good Tool to export data from Atoll to Google Earth.

Download Tool and Guide Here

RRC Establishment Causes

RRC Establishment Cause Description
Cause 0 Originating Conversational Call
Cause 1 Originating Streaming Call
Cause 2 Originating Interactive Call
Cause 3 Originating Background Call
Cause 4 Originating Subscribed traffic Call
Cause 5 Terminating Conversational Call
Cause 6 Terminating Streaming Call
Cause 7 Terminating Interactive Call
Cause 8 Terminating Background Call
Cause 9 Emergency Call
Cause 10 Inter-RAT Cell re-selection
Cause 11 Inter-RAT Cell change order
Cause 12 Registration
Cause 13 Detach
Cause 14 Originating High Priority Signaling
Cause 15 Originating Low Priority Signaling
Cause 16 Call re-establishment
Cause 17 Terminating High Priority Signaling
Cause 18 Terminating Low Priority Signaling
Cause 19 Terminating – cause unknown