Dari data yang telah diperoleh tersebut kita dapat mengetahui kondisi jaringan di suatu daerah. Lte rf design network optimization guideline based on. Optimization of handover algorithms in lte highspeed. 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. This paper introduces two kinds of handover algorithms that adjust the handover ho parameters of lte longterm evolution enodeb evolved nodeb to improve the overall network performance and diminish negative effects. Introduction this paper introduces lte from the perspective of radio network planning. Specifically, users using real time traffic need to experience continuous connectivity. R optimization anr, pci, cco kpiparameter optimization mro mlb rach aicic interference intelligent and automatic optimization 3 lte system architecture 3. Optimization of user behavior based handover using fuzzy q. Lte optimization notes download click here popular.
Drive test merupakan suatu kegiatan untuk mengambil data collecting sebuah jaringan network dengan menggunakan software dan hardware tertentu. A summary of the main ofdma parameters is presented in. Lte basic parameters this section will summarize the basic parameters of the lte. The use of selfoptimization algorithms will eliminate the need for manual monitoring and offline analysis, as these algorithms constantly strive to improve network performance in an automated fashion. 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. Hence, radio link failures rlfs severely affect their quality of experience. Instead the reader is referred to wellknown literature references.
Heterogeneous networks hetnets with a topology of mixed macrocells and lowpower nodes lpns form an important step of capacity enhancement for lte and ltea. Drivetestenabled devices can log the current rank, number of transmit and receive paths. Telecom 2g,3g,4g,rf lte drive test,optimization,ipv6 study. Pdf on antenna parameters self optimization in lte. Care must be taken to coordinate such parameter adjustments between cells i. Self optimization of future radio access networks is one of the main topics for mera research group. Identifying potential faults in the network and resolving them before they affect network performance. Drive testing lte 4 one of the most interesting lte network features to rf optimization engineers is the impact that multiple input multiple output mimo with spatial multiplexing and antenna diversity brings to the enduser performance. Decreasing the rlfs for nonreal time users is not as urgent as the case of real time users. Lte rf optimization areas such as rrc connection setup, bearer drops, coverage issues.
The spectral efficiency is simply the number of bits transmitted over a frequency bandwidth in a specific time and is measured in bitsshz. Lte parameters optimization recommendations for special events. In the past, configuration parameters have been the sole preserve of optimization or network design engineers and most would be set at static or semistatic. 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. The optimization of lte networks mainly refers to preoptimization before and continuous optimization after a network is launched. Long term evolution lte is a fourth generation standard for wireless communications of high data speed at the user terminal.
Selforganizing mobility robustness optimization in lte. Rf planning and optimization for lte networks 417 direct ray re. Lte uses universal frequency reuse n1 without soft handoff. The objective of this paper is to propose a self optimizing algorithm for tuning dynamically the antenna parameters in lte cellular networks. What is kpi what are lte kpis, key performance indicators.
The course lte optimization covers the important features and parameters that influence lte performance like throughput, sessionservice continuity, intralte interference and coexistence with legacy 2g and 3g systems. Lte handover parameter optimization for selfconfiguring. Mpso algorithm based qos parameter optimization for lte networks f. Long term evolution lte systems are operated with frequency reuse one and, therefore, a proper configuration of the antenna azimuth orientations and tilts is essential to mitigate the intercell. Part 2 spectral efficiency explains data part pdsch of the lte subframe and discusses various ways to improve its efficiency. Rectifying causes of faults affecting network performance. This paper describes the handover parameter optimization problem for lte. Abstractautomatic configuration and optimization of net works is a key concept in long. This page describes kpi key performance indicators basics including its categories and mentions lte kpis. It consists of the core network and the access network. Rf optimisation remains one of the key challenges in any network. Parameters usage t310 rlf timer, the maximum time allowed for the radio link selfrecovery. We have categories of kpi and numbers of kpi of each category. Lte rf design network optimization guideline based on scanner drives v4 2.
This article explains the impact of control overhead especially pdcch and the procedures that can be used to optimize it. The focus is on the impact that two kinds of handover algorithms compare to a3 event based on the optimization of hysteresis and timetotrigger in the different velocity. Model tuning according to field measurements is discussed. The impact of advanced lte radio resource management features are brie. Pdf lte handover parameters optimization using qlearning. Lte antennas parameter enhancement for mobile communication applications submitted by. Selfoptimization of handover parameters for longterm. Mobility performance optimization for 3gpp lte hetnets 5 table 1. Nokia networks voice over lte volte optimization contents 1. So, i have decided to write about the various aspects which can help in lte throughput optimization.
Analysis of antenna parameter optimization space for 3gpp lte. Load balancing optimization in ltelte a cellular networks. Pdf rf planning and optimization for lte networks researchgate. Rsrp dbm rssi dbm 10log 12n where rssi received signal strength indicator n. Lte optimization engineering handbook is a comprehensive reference that describes the most current technologies and optimization principles for lte networks. In lte networks, handover optimization is necessary to enhance the users satisfaction. The focus is on the impact that two kinds of hard handover algorithms compare to a3 event based on reference signal received power rsrp and reference signal received quality rsrq measurements in different velocity environment.
Basic parameter of wcdma telecom 2g,3g,4g,rf lte drive. The most important lte radio interface parameters are summarized in table 1 for the convenience of the reader. Lte and lte a supports ip internet protocol based packet. Finally, the most important radio parameter planning tasks are introduced. Load balancing optimization in lteltea cellular networks. Selfoptimization of future radio access networks is one of the main topics for mera research group. The parameters related to rlf detection and recovery can be refered to annex long. This evolved technology needs a cutting edge system. Long term evolution lte is most enhanced broadband wireless. Mera has developed an lte systemlevel matlabbased simulator. However, it is commonly believed that control channels such as the pdcch are more robust, so icic is not applied to the. Load balancing in lte is often an autonomous function, and it is modeled as an optimization problem.
This knowledge transfer is obtained through handson experience using ue based diagnostic tools and scanner tools. Lte handover parameter optimization for selfconfiguring and selfhealing networks meghashree d1, n shesha prasad2 1m. This workshop provides insights into the symptoms and possible causes of field performance issues in lte radio networks using ue logs. Capacity optimization lte optimization engineering. The purpose is to check the performance of network. N310 number of consecutive outofsync indications received from lower layers before the ue starts radio link selfrecovery process. Lte throughput optimization is one of the most frequently discussed topic. Mpso algorithm based qos parameter optimization for lte. Rsrp is the most basic of the ue physical layer measurements and is the linear average power in watts of the. Lte theory to practice kpi optimization a 4g wireless. For lte optimization, proper signaling radio bearer and data radio beares radio link control rlc retransmission parameter settings can improve mobility and retainability performance. Lte mobile optimization a definitive guide white paper.
Selfoptimization of handover parameters in lte networks veronique capdevielle, afef feki alcatellucent belllabs, france email. Consequently, high levels of interference and low sinr can be expected near the cell edge. There is a misconception among some of the industry followers that lte systems configured to operate in unpaired lte tdd or paired lte fdd spec. To attend this training program participants should have knowledge of lte fundamentals lte air interface. Release 12, the mobile relay ho reuses the existing ue ho procedure 5. Handover parameter optimization in lte selforganizing.
Lte optimization free download as powerpoint presentation. What is kpi what are lte kpis,key performance indicators. This training is intended for lte radio network planningoptimization engineers on huawei networks lte radio network planningoptimization managers for huawei networks prerequisites. Lte parameters optimization recommendations for special eventseran7 free download as powerpoint presentation. Rf measurements related to coverage and interference are discussed to analyze coverage holes and overlapping regions. Drop call optimization lte optimization engineering. Tech student, 2associate professor department of electronics and communication engineering, bnm institute of technology, bangalore, india abstract this paper includes an optimization of parameters for lte handover. The paper is mainly targeted for readers with earlier experi. Students analyze lte signaling messages through ue logs and map them to success and failure events. Optimization of handover algorithms in lte highspeed railway networks linlin luan, muqing wu, jing shen, junjun ye, xian he 81. Huawei lte rf planning and optimization training duration. The handover margin hom and time to trigger ttt should.
Signalling minimizing handover parameter optimization. This paper evaluates the hard handover performance based on the different hard handover algorithms for utran lte system. Traffic channel performance at the cell edge can be enhanced via icic. Rs sinr is the most important factor impacted the network capacity. Pdf lte post launch optimization v harjeetsingh gill.
Network optimization is a continuous daily task and is necessary so that network performance satisfies certain thresholds or targets for. Coordinating handover parameter optimization and load. Coordinating handover parameter optimization and load balancing in lte selfoptimizing networks andreas lobinger, szymon stefanskiy, thomas jansenz, irina balanx nokia siemens networks, munchen, germany, andreas. Pdf optimization of the lte network is crucial to obtain the best performance. Requirements for load balancing and handover parameters optimization have been completed in release 9.
The different test cases of lte kpi are mentioned for each of the kpi categories. Sharawi and others published rf planning and optimization for lte networks find, read and cite all the research you need on researchgate. It allows evaluating and optimizing the system performance. Selfoptimization of handover parameters in lte networks. In currently deployed cellular networks, a lot of time and effort is put by operators into the optimization of radio resource management functions.
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