This report describes the drive test process, provides a summary of the results, and explains how. Telecom 2g,3g,4g,rf lte drive test,optimization,ipv6 study. As mentioned kpi is the short form of key performance indicator. Indoor performance measurements do not rely on views of the sky nor gps for positional information. The different test cases of lte kpi are mentioned for each of the kpi categories. There are multiple types of lte drive tests, as well as specific parameters and requirements that should be met for drive tests. Rf planning and drive test a cell can be defined as the area covered by one sector. Check for overlapping, dlul ps long and short calls based on drive test and nominal planning data. Nemo outdoor is a laptopbased drive test tool for 2g, 3g, 4g, and 5g nr mobile network testing which supports over 300 devices and scanning receivers, from various vendors, all the latest network technologies and latest smartphones. For each drive test a team of two people should get involved. Mar 11, 2016 get 3g dt training course with certification 3g wcdma dt drive test paramet. Lte drive test engineer 1120 to 042014 avion systems san diego, ca. Drive test helps operation and maintenance for troubleshooting purposes. Wcdma tems parameters investigation and drive testing.
Get 3g dt training course with certification 3g wcdma dt drive test paramet. Rsrp dbm rssi dbm 10log 12n where rssi received signal strength indicator n. Drive test merupakan salah satu bagian pekerjaan dalam optimasi jaringan radio. Alarms of nodeb and rnc should be monitored for any fault. Drive testing lte 3 while the name drive test comes from the fact that the measurement equipment is generally driven in a vehicle, we should also mention that measuring indoor coverage is becoming increasingly important. The drive test is a test performed in cellular networks regardless of technology gsm, cdma, umts, lte, etc. Drive test is conducted for checking coverage criteria of a cell site with rf drive test tool. With drive test measurement, key performance indicators kpi can be validated. Aug 08, 2018 details of dt, how to drive test, how to pass drived test, basic of drive test. The measurement process should be stopped the car stops eg near traffic lights or whenever the sampling and measurements look suspect. The benefits are many, including energy savings and higher machine output or productivity. Rsrp is the most basic of the ue physical layer measurements and is the linear average power in watts of the downlink. Details of dt, how to drive test, how to pass drived test, basic of drive test.
Lte drive test parameters telecom 2g,3g,4g,rf lte drive. Plz help me in this matter september 17, 2014 at 10. Remember that rssi is only measured at those symbol times during which rs res are transmitted we do not have to take into the count dtx so, when there is no traffic, and assuming only the reference symbols are transmitted there are 2 of them within the same symbol of a resource block from a single tx antenna then the rssi is generated by only the 2. Drive test plan, procedure and output for gsm teletopix. Drive testing of 2g, 3g, 4g, and 5g nr mobile networks. Collection of the input parameters like requirement of capacity, coverage and.
Configuring drive parameters 32 choosing a programming device introduction hitachi variable frequency drives inverters use the latest electronics technology for getting the right ac waveform to the motor at the right time. Specified in 3gpp release 8, the air interface for lte combines ofdma based modulation and multiple access. Lte drive test parameters telecom knowledge and experience. With radio resource management taking place in the enb, suitably instrumented phones can be used to monitor the performance of the physical layer including modulation schemes, access procedures, synchronization, and. One cant just continue to add more test cases for every new app gaming, whatsapp. Drive route and site data for the sites to be driven is taken from customer.
Test platform multiple test model ues can perform different tests. When the test results were completed and submitted to the federal communications commission fcc, the psd analyzed the results to derive insights about mobile wireless service in the state. Dropped call handover with same radio access technologyrat for example gsm. What is kpi what are lte kpis,key performance indicators. Telcoma global 3gwcdma dt drive test parameters on. Nemo outdoor is a laptopbased drive test tool for 2g, 3g, 4g, and 5g nr mobile network testing which supports over 300 devices and scanning receivers, from various vendors, all the latest network technologies and. Optimization is basically the only way to keep track of the network by looking deep into statistics and collectinganalyzing drive test data.
This course of lte drive test covers the process of drive test, parameters of dt and analysis of log files etc. Mar 14, 2017 performing an lte drive test is an important part of how wireless carriers determine whether their networks are performing well and get a glimpse into their competitors network performance. Adjusting parameters values to improve performance on idle mode, prach, ho, anr, pdcch, pucch, etc. Tujuan drive test adalah mengumpulkan informasi jaringan secara real di lapangan. Drive testing is a method of measuring and assessing the coverage, capacity and quality of service qos of a mobile radio network the technique consists of using a motor vehicle containing mobile radio network air interface measurement equipment that can detect and record a wide variety of the physical and virtual parameters of mobile cellular service in a given.
What is kpi what are lte kpis, key performance indicators. Used in more than 180 countries worldwide, tems investigation is the industry standard tool for troubleshooting, verification, optimization and maintenance of wireless networks with emphasis on the practical. Used in more than 180 countries worldwide, tems investigation is the industry standard tool for troubleshooting, verification, optimization and maintenance of wireless networks with emphasis on the practical considerations. Quality issues identification and rx lev, rx qual, tch blocking, sdcch drop,hoissues, call drop problems, and call set up issues analysis. Reference signal received power rsrp this indicator measures the linear average of the received power on reference signal resource elements in the downlink during the drive test to check 4g coverage.
Drive test merupakan suatu kegiatan untuk mengambil data collecting sebuah jaringan network dengan menggunakan software dan hardware tertentu. The data collected by drive test tool as log files is analyzed to evaluate various rf parameters of the network. These same parameters are exploited in drive test software to provide new value to the rf engineers rolling out the final network. Drive test engineer resume example sublime wireless. May 26, 2017 2g 3g 3g parameters 3ggp 4g 4g analysis 4g architecture 4g cell planning 4g physical layers 4g propagation modeling 4g radio planning 4g site location analysis anr handover answers antenna as ascom azimuth backhaul bands bandwidth basic basic wireless basics bcch beam bsc bts burst call flow call setup call test carriers cdma cell cell file. Common performance issues are as follows i voice call performance ii cs video call performance iii ps call performance iv intersystem handover performance call performance may be poor due to poor coverage. Superfast browsing, uploading content to social networking sites. Drive test postprocessing allows filtering data points by distance, frequency and other parameters and using different statistical methods to process drive test data.
For carrying out optimization, it should be checked that all sites are in working condition and correct parameters are configured. Lte is built on an all new radio access network based on ofdm orthogonal frequency division multiplexing technology. Solution for radio optimisation in 3g service new challenges are there for qos, because of new wcdma radio. This page describes kpi key performance indicators basics including its categories and mentions lte kpis. Informasi yang dikumpulkan merupakan kondisi aktual radio frequency rf di suatu base transceiver station bts maupun dalam lingkup base station subsystem bss yang dilakukan dengan mobil sehingga pengukuran dilakukan bergerak. There are few ways to do this, for example through analysis of kpi key performance indicator or through prediction tools and signal interference. Drive testing is a method of measuring and assessing the coverage, capacity and quality of service qos of a mobile radio network the technique consists of using a motor vehicle containing mobile radio network air interface measurement equipment that can detect and record a wide variety of the physical and virtual parameters of mobile cellular service in a given geographical area. Rf planning and optimization engineer resume in patna, br. Telecommunication notes 3g2g muhammad naeem ashraf. Lte drive test data can be analyzed during the drive test process as it is displayed on the screen. Pdf 3g tems parameters investigation and drive testing. Lte drive test parameter introduction linkedin slideshare. Measurable drive test driver test route is based on n field test drive test cluster, it is involved about 20 evaluate the overall network sites in one cluster usually.
Definition of quality of service parameters and their computation. A practical network will have cells of no geometric shapes. Evaluation of prediction accuracy allows users to tune prediction model parameters and achieve high precision calculation results. Handover between two rats, for example between gsm and wcdma.
Dec 30, 2016 remember that rssi is only measured at those symbol times during which rs res are transmitted we do not have to take into the count dtx so, when there is no traffic, and assuming only the reference symbols are transmitted there are 2 of them within the same symbol of a resource block from a single tx antenna then the rssi is generated by only the 2 reference symbols so the result becomes. Every alive network needs to be under continues control to maintainimprove the performance. Every good rf design, after its implantation should be evaluated. Rsrp and sinr optimization based on drive test and oss kpis. Rsrp is the most basic of the ue physical layer measurements and is the linear. Performing an lte drive test is an important part of how wireless carriers determine whether their networks are performing well and get a glimpse into their competitors network performance. Performance indicators definition continued coverage is assessed based on the following radio parameters. Drive test log file of the specified drive route site is. Engineer should study the drive test plan ahead of time and highlight the intended drive test routes.
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