Drive Test Using TEMS Investigation16.1

By Md Joynal AbadenRF Engineer Auspicious

TEMS Investigation Used in more than 180 countries worldwide Data Collection TEMS Investigation is the industry standard tool for

troubleshooting, verification, optimization and maintenance of wireless networks.

TEMS Investigation supports all major technologies, making it the ideal testing tool at every stage of the network’s life cycle.

TEMS Investigation has been the leading originator of drive-testing features and functions for two decades.

TEMS Investigation is a complete, cost-effective and conveniently compact solution for the active field engineer.

Drive Test Procedure

DT Tools Laptop Dongle (Tems) Mobile Set Modem Data Cable SIM Card GPS Hub Inverter Vehicle Mobile Charger MS Excel

laptop

dongle

Mobile set

huawei_e3276_4g_lte_modem_2_

gps

hub

inverterdata cable

Careful Before go Drive Test

Check Ur DT Tools (All Functionality ) Check SIM Card ( Have Valance, Data

Connectivity) DT Route & other Necessary Map Update Cell File For Swap (Collect Parameter & Other

Information ) Check Inverter Before leave the office

Careful to Tems First Connect Dongle ( Tems License) Open Tems 16.1 from ur workspaces Attached Mobile Set ( MS ) Attached Modem (DC) Attached GPS go layer control remove unnecessary

Item & Add DT Route, other if necessary. Update Cell File

Connectivity Make Sure That u Have Right Dongle Attached Dongle Open Tems Investigation Workspace First Attached Required MS ( Mobile Set)

if more then one then attached one by one

Attached Modem (If Required) At least Attached GPS

Cell File & DT Route From Layer Control Remove

unnecessary Item & Add DT Route, other if necessary.

Add Cell File or F0llow The Procedure

Update Cell File

Step 1 Go file Menu Select Configuration Menu Then General Submenu

Step 2 Go file submenu Select General then select Submenu Cell File Load

Step 3 Go file submenu Select Cell File Load After Click There Open A new Window

Step 4 new Window Click Add there open a new window

Step 5 select a location Where U Store Cell File

Step 6 select a location then Click ok

Step 7 First look

Log Collection Select Driver With out C Drive, Another

Drive Select location Prefer to with Site or

Cluster or Given Task name Start Recording then Start Command

Sequence.

Log Collection Select Driver With out C Drive, Another

Drive Select location Prefer to with Site or

Cluster or Given Task name Start Recording then Start Command

Sequence.

Command Sequence

Backup Windows Dotnet framework 4.5 Tems Investation 16.1 Mobile & GPS Driver Office Other Necessary Document

GSM NeighborsThis window is very helpful in case of 2G – 3G Handovers as we can see all the 2G neighbors of that particular 3G cell in the compressed mode state.

Serving/Active Set + Neighbors Cell I.D – This is the identity or name

given to a particular Node B and its cell by the operator.

UARFCN – It is the frequency band allotted to the operator. One spectrum bandwidth is of 5MHz in WCDMA or 3G.This window shows us the centre frequency of the bandwidth allotted to the operator.

Serving/Active Set + Neighbors Cell Name – It is the name given to

particular Node B’s by the operator generally along the lines of the name of the area the Node B is located in.

Scrambling Code – Scrambling code is a code assigned to a particular cell. There are 512 such codes for the network to differentiate among different Node B’s and these codes can be repetitive. They are of two types primary and secondary.

Serving/Active Set + Neighbors AS – This stands for Active Set. Active Set is the

set of Scrambling Code which the U.E is currently latched on and there can be a maximum of 3 Scrambling codes in Active Set.

MN – MN Stands for monitored neighbor i.e. the neighbor cell that is detected by the U.E as a neighbor and is also defined as a neighbor in the network. U.E will initiate a Handover onto the monitored neighbor in case the monitored neighbor has a stronger RSCP or EcNo than the AS.

Serving/Active Set + Neighbors DN - DN stands for Detected Neighbor and

as the name suggests it is the neighbor detected by the UE but, is not defined in our network . Hence, the U.E does not handover to the detected neighbor. It can be because of Overshooting of a site, incomplete neighbor list or in case of a new site. It is very important to optimize and have no DN’s as they are one of the major reasons of Call drops in 3G.

Radio Parameters CPICH Ec/No – Common Pilot channel

Ec/No is the ratio of energy of the chip and the combined power of all the signals including the pilot itself received by the UE at that particular point. It is a very important factor for call quality.

CPICH RSCP – Received Signal Code Power is the level of the signal received by the U.E from a particular pilot.

Radio ParametersRadio parameters are the parameters of a Mobile equipment –Tx Power – As the name suggests it is the transmitting

power of a Mobile Station. Its value can vary from-50 to 50. The minimum the Tx power of the Mobile

station the better it is for call quality.UTRA Carrier RSSI - It is the Received Signal Strength

Indicator of the Mobile Station or the U.E. It tells us the total Power Received by the Mobile Station from all the Pilots including itself at that particular location.

Radio Parameters SIR – It is the signal to interference Ratio is

the ratio of Energy in the DPCC(Dedicated Physical Control Channel) to that of the interference and noise received by the U.E.

Target SIR – It is the target Signal to Interference ratio that Mobile Equipment is supposed to achieve by increasing or decreasing its power. It is set by the use of Power Control procedure.

Radio Parameters SQI - It is the speech Quality Index

which is a parameter to rate the voice Quality on that particular call. It ranges from 0 – 30 with 30 being the best quality.

RRC State – It tells the current state and channel as in Idle or dedicated.

Mode – It is the mode that we are using GSM or WCDMA.

HSPA/GSM Line Chart This window gives us the data speed for

both 3G and 2G modes depending on which mode the mobile equipment is.

RLC DL Throughput – This is the total throughput on the downlink at that particular point.

The speed shown in this window as throughput is in Kilobits/sec.

Thank You