As a consequence, mobile networks have experienced a significant increase in data traffic, while voice traffic has shown nearly no growth. Please help improve it or discuss these issues on the talk page. Jul 20, 2017 the latest advances in wireless technologies have led to a proliferation of data mobile devices and services. Network also keep measuring received signal strength from the mobile for commanding uemobile to perform handover. Fdd lte call drop troubleshooting guide free download as powerpoint presentation. This workshop provides insights into the symptoms and possible causes of field performance issues in lte radio networks using ue logs. A self optimizing function would increase network performance and quality reacting to dynamic processes in the network.
The optimization method based on traditional kpi statistics cant effectively meet the goal of improving user experience of quality qoe. Just as ethernet and the internet have different types of qos, for example, various levels of qos can be applied to lte traffic for different applications. A baseband unit bbu is a unit that processes baseband in telecomm systems. This course is designed by telefocals team of experts with many years of field experience planning and deploying 3g lte transmission networks that include mobile backhaul. Selfconfiguring, selfoptimizing wireless networks is not a new concept but as the mobile networks are evolving towards 4g lte networks, introduction of self configuring and self optimizing mechanisms is needed to minimize operational efforts. With courses designed for those in rf, system performance, core, and operations, awards engaging and extremely relevant approach to learning offesrs the most efficient and practical lte courses in the industry. The long term evolution standard lte is a wireless communications, highspeed data standard for mobile phones and data terminals. The book is full of detailed signaling information and easy to understand. Dec 20, 2016 lte standards are in matured state now with release 8 frozen. For irat handover inter rat measurements is very important as even while mobile ue is active in one modeor rat, it will continuously does measurements for other rats for handover decision. The nonaccess stratum nas signaling security feature provides integrity protection and encryption of nas signaling.
We have categories of kpi and numbers of kpi of each category. This article is about the principle of railway signalling. 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. A comprehensive reference on the call procedures of 4g ran and core networks, lte news alert signaling, troubleshooting and optimization describes the protocols and procedures of lte. In this paper, we present a detailed practical performance analysis of volte based on commercially deployed 3gpp release. Typearial size28pt colorwhite text25 level typearial size2418pt colorwhite table of contents call establishment and call. Lte signalingtroubleshootingoptimization 1224075058phpapp02 1. Simulation of lte signaling article pdf available in advances in electrical and computer engineering 102 may 2010 with 2,315 reads how we measure reads. Lte signaling, troubleshooting and optimization is the long term evolution successor to the previous wiley books umts signaling and umts performance measurement. Lte rf optimization training provides knowledge and skills needed for successful delivery of lte network design, lte planning and optimization activities. Analysis of cell load coupling for lte network planning and optimization 4 in contrast to the powercontrol model, the service requirement of ratecontrol scheme in cellular networks is not sinr threshold or a function of sinr, but the amount of data to be served over a given time period. Lte signalingtroubleshootingoptimization1224075058. Because the lte mac is fully scheduled, qos is a natural fit. Cell range expansion, control user plane split, coordinated multipoint comp, reduced l2 signaling 5g capabilities latency and throughput with lte pro ran technology features e.
Jun 19, 2018 the optimization method based on traditional kpi statistics cant effectively meet the goal of improving user experience of quality qoe. It also provides the mechanism for transporting the clients digital signal through into the oth compliant network. Lte optimization free download as powerpoint presentation. Fdd lte call drop troubleshooting guide troubleshooting. Lte signaling, troubleshooting, and optimization ralf kreher, karsten gaenger. Lte network capabilities are enhanced with small cell deployment, with optimization and with new 3gpp features. This is done in gsm via gaussian minimum shift keying gmsk.
On balance between security and performance for lte wireless. Dec 04, 2016 the purpose is to check the performance of network. Volte signaling implications since lte was designed as endtoend, ipbased network, one of the main challenges identified early on was how to most effectively. In cdma, they call it access probe as far as i know but i dont have much. Learn how and when to remove these template messages this article needs additional citations for verification. Nov 30, 2018 please refer to lte optimization technical guideline mobility for more detail information. Unfortunately, counters and disjointed kpis can misrepresent the subscriber experience, and without visibility to the actual radio network signaling associated with handovers, capacity, interference, rf link coverage, and cell site construction errors such as cross. Huawei confidential page 16 contents network and rf optimization processes lte rf optimization objects troubleshooting coverage signal quality handover success rate 17. The goals for lte include improving spectral efficiency, lowering costs, improving services, making use of new spectrum and reformed spectrum opportunities, and better integration with other open standards. It is therefore essential for operators to understand the data traffic behavior at the user level in order to ensure a good customer experience. A typical wireless telecom station consists of the baseband processing unit and the rf processing unit remote radio unit rru. The purpose is to check the performance of network.
Lte signaling, troubleshooting, and optimization wiley. Mera has developed an lte systemlevel matlabbased simulator. Sctp is also utilized as transport for the diameter protocol in lte. Featuring a simplified and actionable view for ran analysis, optimization, rf troubleshooting and planning teams, netscouts ran solutions deliver the 24x7 realtime visibility needed to reduce your reliance on drive testing and improve your engineering and small cell planning efficiency, while protecting and profiting from an elevated subscriber experience. This extensively updated second edition of lte signaling, troubleshooting and performance measurement describes the lte signaling protocols and procedures for the third generation of mobile communications and beyond. Baseband can also refer to a type of data transmission in which digital or analog data is sent over a single nonmultiplexed channel. There are also discussions, and its even fair to say some controversy, over the different methods to manage and control diameter signaling in. Stream control transmission protocol sctp is the key protocol utilized as transport for all signaling between the ran and epc. Lte signaling, troubleshooting, and optimization lt e signaling, troubles hooting and optimiz ation, first edition. Lte drive test parameters telecom knowledge and experience.
Pdf lte signaling, troubleshooting, and optimization. This is the first message from ue to enb when you power it on. For the physical signals themselves, see railway signal. Troubleshooting and optimization thursday, july 4, 2019.
The mme works as the termination point in the network for cipheringintegrity protection of nas signaling and handles the security key management. A solution for voice over lte needed as soon as mobile terminals start to use the lte access. A comprehensive reference on the call procedures of 4g ran and core networks, lte signaling, troubleshooting and optimization describes the protocols and procedures of lte. So, i have decided to write about the various aspects which can help in lte throughput optimization. Knowing lte technology in detail is not very easy especially when you are preparing for lte interview questions as technology is a long term learning procedure. Start here use overtheair ota tests to spotcheck a transmitters coverage and signal quality. How to train an artificial neural network part 4 by ray sulewski. Rf measurements related to coverage and interference are discussed to analyze coverage holes and overlapping regions.
Following table summarizes kpis for lte ranradio access network. Long term evolution lte is 3gpp enhancement to the current cellular system in use. This article explains the impact of control overhead especially pdcch and the procedures that can be used to optimize it. Selfoptimization of future radio access networks is one of the main topics for mera research group. Even though they use a little bit different name, in all cellular technology cdma, gsm, wcdma, lte there is a specific signal that perform the same function. Lte signaling, troubleshooting, and optimization lte signaling, troubleshooting and optimization, first edition. Ntct today announced two engineering experts have written lte signaling. Network surveillance system web based network surveillance. Berlinbased authors ralf kreher, principal engineer, and karsten gaenger, product line manager, geolocation, cowrote both editions. Troubleshooting and optimization, 2nd edition, and the published book is now available in the united states and europe. Online a comprehensive reference on the call procedures of 4g ran and core networks, lte signaling, troubleshooting and optimization describes the protocols and procedures of lte. Small cells have been discussed in the communications industry for many years, but their true deployment is happening now. Lte optimization guide telecom knowledge and experience. Lte optimization technical guideline retainability rev.
Download for offline reading, highlight, bookmark or take notes while you read lte signaling. The optical channel layer is the highest level layer and interacts directly with the clients system interface. Lte long term evolution is the latest mobile telecommunication technology, currently in development. How to train an artificial neural network part 3 by ray sulewski. Learn how undertake network performance improvement kpis and optimization tasks and create acceptance plan, sponsor best practices and ensure data integrity of various morphologytopography. It is youngest evolution in ip technology and evolving very fast. Pdf mobile data service qoe analytics and optimization. In this paper we briefly touch upon the procedures executed by lte user equipment ue and the various lte network elements in order to provide the services requested by the ue. Compress and broadcast assume near entropy reaching compression of the scheduling map and that the same information is broadcast to all scheduled users jointly. Volte signaling implications since lte was designed as endtoend, ipbased network, one of the main challenges identified early on was how to most effectively support legacy circuitswitched cs voice services. Challenges of deploying wimax networks and signaling test. Both coveragelimited and interferencelimited scenarios are considered.
It explains essential topics from basic performance measurement counters, radio quality and user plane quality to the standards, architecture, objectives and functions of the different interfaces. Lte signaling, troubleshooting and performance measurement. Lte enodeb troubleshooting guide utilizing anritsus handheld bts master, cell master or spectrum master with options 0541, 0542 and 0546 visit us at. Arial bold size3235pt colorthe theme blue subtitle. Lte signalingtroubleshootingoptimization1224075058phpapp02 1. Lte signaling attack is a serious threat to a wireless sensor and actuator network whose facilities are dispersed and connected with lte technology on a large scale, in order to conduct a particular mission.
Students analyze lte signaling messages through ue logs and map them to success and failure events. In the optimization process we have to check the kpi value to monitor and optimize the radio network performance in order to provide better subscriber quality or to achieve better use of installed network resources. A method for identifying faulty cells using a classification. Strategical approach for volte performance improvement. Based on qoe, this paper presents a kind of usercentric wireless networks optimization method that includes a users qoe evaluation model and a locating the network problems method for data service. Answer is quite simple lte does not fulfill all requirements of itu 4g definition. What is kpi what are lte kpis,key performance indicators. Award solutions has trained over 100k individuals on lte, and offer the most comprehensive and rolerelevant courses in the industry. Sctp fast path optimization for 3glte networks radisys white paper 3 figure 2 highlights the control protocol stacks of these lte network elements. Many carriers rely on equipment vendor counters and core network monitoring systems to gauge and maintain performance of the ran. All these features make lte a very attractive technology for operators as well as the subscribers. Lte0 one signalingscheduling principle in the lte standard. Lte qos lte architecture supports hard qos, with endtoend quality of service and guaranteed bit rate gbr for radio bearers.
Lte provides downlink peak rates of at least 100mbits, 50 mbits in the. This is used to measure contribution to subscriber perceived quality and system performance. The key protocols for r1 signaling monitoring purpose include. Anomaly detection of networkinitiated lte signaling traffic. The purpose of developing this system is to keep 3gpp systems competent enough for decades to come.
Lte optimization engineering handbook is a comprehensive reference that describes the most current technologies and optimization principles for lte networks. Its basis stands in the gsmedge and umtshspa network technologies, with changes in terms of an increased capacity and higher speed by simplifying the core network and using a different radio interface. Lte architecture supports hard qos, with endtoend quality of service and guaranteed bit rate gbr for radio bearers. Contains a description of lte air interface monitoring scenarios as well as other key topics up to an advanced level lte signaling, troubleshooting and optimization is the long term evolution successor to the previous wiley books umts signaling and umts performance measurement. Call detail records, fraud detection and location, remote protocol analysis and troubleshooting, realtime signaling monitor, traffic optimization engineering, and statistics determine actual call signaling routes to verify network functionality under all situations including congestion and loss of ss7 nodes. However, you can start preparing yourself slowly but with important points so that you understand technology and know the basic answers. It allows evaluating and optimizing the system performance.
This paper describes the handover parameter optimization problem for lte. Often the lte standard is seen as 4g standard which is not true. The text offers an introduction to the basics of lte architecture, services and technologies and includes details on the key principles and methods of lte optimization and its parameters. Lte networks are getting high loaded which calls for more advanced optimization. In order to permit the teaching of the internals of this technology, we have developed a simulation and emulation software for the elearning community, which is able to simulate the call flows and signaling messages of the lte. Lte small cell optimization ebook by 9781118912409. As lte networks are rolling out worldwide, there are many discussions going on about the critical need to manage signaling, in particular diameter signaling. Lte is designed to have wider channels up to 20mhz, with low latency and p acket optimized radio access technology. Magic genie signaling without any resource cost at all. Lte throughput optimization is one of the most frequently discussed topic. Lte signaling, troubleshooting and optimization is the long term evolution successor to the previous wiley books, umts signaling and umts performance measurement about the author ralf kreher works as senior software architect for tektronix communications test and optimization business with focus on umts and lte performance measurement and key. Troubleshooting and optimization ebook written by ralf kreher, karsten gaenger.
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