Expand the layers under the Data (2) and expand the Data Testing node. Examine each group and parameter, as

shown the figure below.

Introdu c tio n to A-RVS fo r UMTS

Figure 12 - Expanded Handset Stream Showing Data Testing Node

The Data Testing node in a UMTS handset stream provides data parameters that are not specific to a single wireless technology. Under the Data Testing node, the following groups may be found:

Application Measurements – Find the instantaneous application layer throughput here. This is the value that most closely approximates the end user’s experience.

Protocol Measurements – This group contains throughput values for each layer in the IP stack. This group contains statistics for the IP, PPP, TCP, ICMP and RLP2 layers.

• IP (Internet Protocol) provides a connectionless addressing scheme of packets, or datagrams, to be delivered in a packet-switched data network.

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Introdu c tio n to A-RVS fo r UMTS

• TCP (Transmission Control Protocol) establishes a virtual connection between a source and a destination in a data network.

• PPP (Point to Point Protocol) serves primarily to provide some security to datagrams in the IP network.

• ICMP (Internet Control Message Protocol) supports error, control and informational messages within the data network.

• RLP2 information is provided in some drive-test formats to represent the physical connection between the mobile and the test system.

Task Settings – This group contains task identifiers including Task_Id and Task_Name.

Task Summary – This group contains application level parameters summarizing the entire task.

Ping Statistics – This group contains metrics for any ping session within the logfile.

Application Statistics – This group contains the number of bytes transmitted by the data application.

Connection – This group contains details for data connections activated within the logfile.

HTTP Statistics – This group contains metrics for any HTTP session within the logfile.

Examining Technology-Independent Data

Under the UMTS Voice 1 → Nemo3GPP (0) handset stream, expand the Independent folder to look at technology independent parameters decoded in Analyzer. In addition to GPS measurements, device-specific data, and internal Analyzer messages, find the following groups here:

GPS Data – This group contains mobile longitude, latitude, distance travelled, and speed.

Message Info – The date and time for the start of the data stream can be found in this group. This information is useful when building report templates.

Site Data Node – If a cell site database is being used in the Analyzer, the software will automatically calculate these measurements that take both the drive and the cell site

Introdu c tio n to A-RVS fo r UMTS

information into account. Some of the measurements contained here are:

ServingCellDistance–distance, in meters, to the serving sector

NeighborCellDistance–distance, in meters, to non-primary serving sectors

File Info – In this node find label and timestamp information for the logfile under investigation.

Vendor Specific – Vendor Specific measurements may be grouped here or under the UMTS node. In either case, this group provides measurements specific to the particular collection device used.

Device Info – This group contains settings for the mobile device on which data is logged.

Examining UMTS Scanner Data

Due to the nature of the coding scheme in a UMTS system, scanner data is an invaluable tool for detecting problems in the network. Because SCs are reused across a UMTS network with a much lower frequency than in an FDMA/TDMA network, each SC scan can be directly linked to a particular site or sector in the network.

The Agilent Scanner 1.mdb file already opened in the workspace contains SC scanner data in the E6455C (IMT2000 Receiver)-E6455C (IMT2000 Receiver) 2132.600MHz (1) stream.

Expand the scanner stream to reveal the contents:

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Introdu c tio n to A-RVS fo r UMTS

Figure 13 – UMTS Scanner Stream Expanded to Show Its Contents

Note that under the UMTS data group, several groups have been created to help you easily drill down into the data. For each scanner stream, the following nodes are available:

Other – This group contains scanner measurements concerning RSSI, Chip Offset, Carrier Error and the Scan Code Group.

Nth Best – This node contains ranked measurements for EcNo, RSCP, SC and PathLoss. Within each group, the “0”

element contains the best performing data. For example, CPICH_Scan_EcIo_SortedBy_EcNo_0 gives the strongest EcNo of all SCs scanned.

Ec/Io – This group contains the interference-to-chip-energy measurements organized by various dimensions.

RSCP – This group contains the Received Signal Code Power organized by various dimensions.

Introdu c tio n to A-RVS fo r UMTS

Delay – Find the CPICH Scan Delay Spread for each SC in this group.

Pilot Measurements – Find the CPICH PathLoss for each SC in this group.

Active Set – This group contains simulated Active Set measurements based on scanner data and the user-defined WCDMA settings in the Tools → Preferences dialog.

Monitored Set – This group contains simulated Monitored Set measurements based on scanner data and the user-defined WCDMA settings in the Tools → Preferences dialog.

Event Data – Events in this group are based on the simulated Active Set and Monitored Set SCs based on scanner data and user defined thresholds set under WCDMA in the Tools → Preferences dialog.

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Introdu c tio n to A-RVS fo r UMTS

The Favorites Group

You may find that having access to all of the parameters within a logfile in the Workspace is not necessary and that it makes finding the key parameters more difficult. Analyzer allows you to identify a subset of parameters you need access to and place them in the Favorites Group. This group can be viewed by clicking on the Favorites tab in the Workspace. Try setting the following favorites for UMTS radio parameters based on the UMTS Voice 1 data file:

1. In the Workspace, click to select the UMTS → Downlink Measurements → UTRA_UE_CarrierRssi parameter, then right-click on it and choose Add to Favorites from the pop-up menu. Also add the UE_TxPow parameter to Favorites.

2. Under Dedicated Radio Link, find Uu_UE_HandoffState