It is determined by receiver noise figure, thermo noise power and required snr. Umts spectrum auction in germany humboldtuniversitat zu berlin. What is the maximum data rate supported by a gsm system. This page covers gsm questionnaire set prepared by experienced specialists in gsmgprs domain. Ue is characterized at cell level according to its current active set. The pcpich is always scrambled by the primary scrambling code of the cell and is spread a factor 256 and an ovsf whose index is zero. You can download these questions as pdf by clicking print option and. This book provides a comprehensive description of radio access networks for umts. Without softsofter handover there would be near far scenarios of a ue. Cell phones use a cell phone service carriers gsm network by. Utran and the ue maintain a hyperframe number hfn for each. Umts, ecno and ecio are often used interchangeably. This video provides an example of the registration procedure.
These questions are very useful as viva questions also 1. The network does not perform handovers as the mobile moves from one cell to another. Umts stands for universal mobile telecommunications system umts based on the gsm standard it is a thirdgeneration mobile cellular system for networks. Umts works on wcdma, cdma2000 and tdscdma implementations by 3gpp and 3gpp2. This was followed by a couple of one on one telephonic interviews with two hiring managers. The hfn forms the upper 20 or 25 bits of the countc parameter and is initialized using the security parameter start. Eventtriggered reporting ue sends a measurement report only on certain event triggers. If you are late or arrive just in the nick of time, the interviewer will start to wonder. A 3g mobile network offers good download and upload speeds. Lte interview questions abdul august 04, 2018 lte interview questions, 2 comments lte interview question question1 often it is asked to differentiate between single carrier and multiple carrier systemsi.
When not stated otherwise elsewhere, the utran may initiate the ue dedicated paging procedure also when another rrc procedure is ongoing. Cdma umts rf interview questions 4 be telecom engineer. Third generation 3g wireless networks will offer faster data transfer rates than current networks. Umts overview david tipper associate professor graduate telecommunications and networking program university of pittsburgh 2720 slides 12 telcom 2720 2 umts etsi proposed gsmnatdma gprs evolution under name universal mobile telecom. Umts interview questions and answer authorstream presentation. Testing, specifications and standard bodies for engineers and managers dr. Conducting a successful interview process doing a good job of conducting employment interviews and evaluating applicants takes more time than having an informal conversation. To gather further information on recently posted jobs, visit our jobs portal. Sir is the signaltointerference ratio the ratio of the energy in dedicated physical control. What is the difference between bitrate and chip rate. Org is responsive and optimized web portal for individuals to get preparation for their job interviews, learning and training. Changes since the release 99 version are described while some of the new features from the release 7 version are introduced. This page covers wcdma questionnaire set prepared by experienced specialists in wcdma domain. The lower 12 or 7 bits of countc are set to the sn of the pdu to be ciphered or deciphered.
However, you can start preparing yourself slowly but with important points so that you understand technology and know the basic answers, following article has 2 sessions. These questions are very useful as viva questions also. Umts interview questions and answer free download as powerpoint presentation. Rf planning and optimization in gsm and umts networks under the guidance of department of electronics and communication engineering manipal institute of technology a constituent institution of. Dont worry we have provided all levels of umts interview question and answers on our wisdomjobs site page. Gsm, which stands for global system for mobile communications, reigns as the worlds most widely used cell phone technology. It is specified by 3gpp and is part of the global itu imt2000 standard. Multiple choice questions and answers on mobile communication. To gain further knowledge and to get impeccable scores on the interview, access lte jobs interview questions and answers page designed by experts. In fact, plan to be early for any scheduled interview.
Com gsm technology job interview preparation guide. The main content is based upon the release 6 version of the 3gpp specifications. A link budget is the accounting of all of the gains and losses from the transmitter, through the medium free space, cable, waveguide, fiber, etc. Org is an interview preparation guide of thousands of job interview questions and answers job interviews are always stressful even for job seekers who have gone on countless interviews. It exists when ue really requires uldl dedicated resource.
Universal mobile telecommunications system umts is one of the thirdgeneration 3g mobile telecommunications technologies, which is also being developed into a 4g technology. Gsm technology interview questions and answers global guideline. The first deployment of the umts is the release99 r99 architecture. Study these interview mcq questions and answers on 3g umts wcdma network architecture and interfaces. Also, know about frequency bands used in 3g networks. Dont worry we have provided all levels of umts interview question and answers. Interview dos and donts interview donts dont be late. If you want to prepare for real time interview on 3g, 4g or telecom topics, you can checkout tele interview.
These top 10 wcdma interview questions and answers help engineers seeking wcdma umts job to crack the interview at initial attempt. Cdma umts rf interview questions be telecom engineer. It is an allip network that consists of ip routers edge and core ip routers. Hopefully, 3g interview questions and answers help you with your next interview. Utran and the ue maintain a hyperframe number hfn for each uplink and downlink am and um logical channel. Services umts most of 3g licenses in europe required operator to deploy. Oct 15, 2017 this lecture of the concept of spreading in wideband cdma wcdma or umts networks. Multiple choice questions and answers on mobile communication multiple choice questions and answers by sasmita january 9, 2020 1 the modulation technique used for mobile communication systems during world war ii was.
Rf signaling site and solution spectrum telco magazine telco technology telecomnews tool transmission troubleshooting umts training useful android app useful engineering app useful ios app. Pdf rf planning and optimization in gsm and umts networks. The first generation of wireless 1g was analog cellular. The device or ue needs to let the core networks know that it is switched on and active. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Changes since the release 99 version are described while some of the new. Eventtriggered reporting ue sends a measurement report only on certain. Downlink uses qpsk uplink uses dual bpsk 2range of spreading factors. Rscp stands for received signal code power the energy per chip in cpich averaged over 512 chips. This lecture of the concept of spreading in wideband cdma wcdma or umts networks. The received signal code power rscp is the collected rf energy after the correlation descrambling process, usually given in dbm. Your contribution will go a long way in helping us. The radio resource control rrc protocol belongs to the umts wcdma protocol stackand handles the control plane signaling of layer 3 between the ues user equipment andthe utran. Wcdma interview questions and answers high speed packet.
Bsc instructs mobile to handover based on these reports. What is the experience and involvement in your current and previous umts designprojects. Sensitivity is the minimum input power needed to get a suitable signaltonoise ratio snr at the output of the receiver. If youve never done well on interviews, never even been on a job interview, or just want to make sure a lousy interview doesnt cost you a job you. A tma reduces system noise, improves uplink sensitivity andleads to longer ue battery life. Read the most frequently asked 60 top 3g interview questions and answers for freshers and experienced job interview questions pdf 3g interview questions and answers list 1. This new edition also provides an outlook to release 10, including the overview of release 10 lteadvanced technology components which enable reaching data rates beyond 1 gbps. The official fuel of the usmts, vp racing fuels is headquartered in san antonio, texas, and their distributors sponsor several usmts racers including terry phillips, zack vanderbeek, dereck ramirez, jason hughes, joe duvall and others. The cross reference between gsm, umts, 3gpp and etsi identities can be. Talk about your current and previous projects, your responsibilities, design objectives, toolsused, activities involved, challenges, objectives met, etc. About interview questions answers interview questions answers. It requires training in the skills, techniques and requirements of successful interviewing. Umts network is called a third generation network3g. It was a 2 hr telephonic interview that covered my past experience, knowledge of algorithms and coding questions.
Study these interview mcq questions and answers on 3g umts cdma2000 cdma network architecture and interfaces. Study these interview mcq questions and answers on 3g umts wcdma network. Org might be simplified to improve our users experience. However, the results of the auction proved these critics wrong. Gprs network in 3g is similar to that of the 2g gsm network. Umts, on the other hand, is not a synchronized network and all scrambling codes are.
Gsm technology interview questions and answers guide. This verdict was echoed by klemperer who made similar statements in press interviews. The best way to reduce the stress is to be prepared for your job interview. Worried about what type of interviews question will be asked in the interviews. Wcdma for umts radio access for third generation mobile communications third edition edited by harri holma and antti toskala both of nokia, finland. Easily clear job interviews and college exams after studying these. The ue attempts then to read the pcpich so as to extract the primary scrambling code used in the cell. In fdd there will be pair of frequencies assigned in the downlink and uplink directions and hence transmissions from multiple subscribes can happen at the same time but on different frequencies as mentioned. Umts tutorial pdf version quick guide resources job search discussion the universal mobile telecommunications system umts, based on the gsm standards, is a mobile cellular system of third generation that is maintained by 3gpp 3rd generation partnership project. Compiled by abdul basit qureshi gsm rf interview faqs 1 gsm plmn services bearer services thse services give the subscriber the capacity required to transmit appropriate signals bw certain access pointsi. Since the pccpch is always scrambled by the primary scrambling code of the cell which has now been determined and is always spread using sf256 with ovsf index1, the ue can read the pccpch without any problem. May 03, 2017 umts networks will just be added to mobile landscape. The difference lies in the lte frame structure in both the fdd and tdd versions of the lte.
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