UTRAN Performance Evaluation and System Monitoring Using SLT - A Call Trace Test Approach
Original Publication Date: 2006-Jun-01
Included in the Prior Art Database: 2007-Mar-19
AbstractSLT or SMAP (System Monitoring and Application Process) Local Terminal is a Motorola tool used in monitoring and evaluating the performance of UTRAN systems. It is a GUI-based application that logs call trace data from the network elements in a UTRAN, namely the RNC and NodeB.
UTRAN Performance Evaluation and System Monitoring
Using SLT – A Call Trace Test Approach
UMTS SVV Team/GSG Malaysia/OSSD
SLT or SMAP (System Monitoring and Application Process) Local Terminal is a Motorola tool used in monitoring and evaluating the performance of UTRAN systems. It is a GUI-based application that logs call trace data from the network elements in a UTRAN, namely the RNC and NodeB.
This paper talks about how SLT can be used as an effective tool to perform call trace testing at the System Test level to monitor RNC and NodeB stream events, as well as collecting UTRAN network traffic measurement reports at predefined intervals.
1 Introduction 2 SLT and Call Trace Setup
Call Tracing is one of the important aspects in In order to perform call trace testing, there managing a UMTS network. By tracing calls of must be an end-to-end test system consisting interest and gauging the RF performance, network of a Core Network2, a UTRAN network (at operators will be able to get an overall view of least an RNC and a NodeB) and an OMC-U their UTRAN network performance level, as well (Motorola’s OMC for UMTS) machine. This as discover the differences between specified and is illustrated in Figure 1. predicted characteristics for improvement. Both the RNC and NodeB have to be
The collected data will be analyzed and provisioned to the same OMC-U server via an afterwards being used to optimize the network, IP network with their cells setup and enabled. improve predictions of network behaviour and After that, an SLT Server is setup in the same eliminate potential problems. Used by System LAN as the OMC-U server and multiple SLT Engineers to obtain and verify coverage maps, it Workstations (desktop clients) can be also helps to identify coverage holes in the connected to it to issue call trace commands. network. Acting as a trust PC to the OMC-U server, an
System Monitoring Application Processor SLT Server will issue remote shell (RSH) (SMAP) is Motorola’s RF performance commands through the OMC-U after receiving optimization solution. It supports detailed RF instructions from the SLT Workstations. performance data collection, monitoring and However, before any call trace session can be analysis, while at the same time reduces the initiated on any of the UTRAN equipment, the optimization cost. SLT1 is a tool that implements SLT Server will have to discover the network the SMAP solution in a client-server architecture, topology on the OMC-U server. whereby SLT Server consists of the SMAP engine while SLT Client/Workstation serves as the multi-client interface to end users.
1 SLT is a tool developed in CSIS department of 2 A network traffic simulator, such as Catapult’s Motorola Madrid, Spain. Message Generator Traffic Simulator (MGTS®), can be used to generate Core Network traffic
Once the OMC-U server receives the stream level directive in the...