Based on the simulation results, we discuss optimization tradeoffs and recommendaset ofparameters for eachscenario. If the attempt succeeds, the actions necessary to fulfill the handover proposal are executed. The parameters examined in this study include the total cell transmission power target, the received total interference target, the downlink. Before describing the above scenario we need to know three important terms. Handling optimization of new sites and handled problems like call drop, interference, handover failure, handover reversion, inbuilding problem, antenna tilting, competitive drive test. Intersystem cell reselection parameter optimization qualcomm. The assessment metrics are used as measurements during the optimization process and as performance indicators for the optimization algorithm evaluation. Optimization of soft handover parameters for umts network in indoor environment master of science thesis, 75 p. Review parameter optimization is an important step after rf optimization.
The show transport channel settings check box enables you to specify the parameters corresponding to the wcdma tx channel coding scheme subsystem, the wcdma tx phch mapping subsystem, and its corresponding subsystems at the receiver side. Automated optimization of key wcdma parameters semantic. Voice capacity offered is very high due to interference control mechanisms, including frequency reuse of 1, fast power control, and soft handover. Wideband code division multiple access is a cdma channel that is four times wider than the current channels that are typically used in 2g networks. Soft and softer handover were introduced in wcdma architecture. Handover parameters selfoptimization by qlearning in 4g networks. Parameters optimization for handover area being small case 3. I handover parameters selfoptimization by qlearning in 4g networks realized. Soft hand over parameters plays a big role in the optimization. Coordinating handover parameter optimization and load. Wcdma 3g interfrequency handover principle and parameters. Wcdma handover optimization guidelines proceedings of the 11th.
Everybody who has experience with dealing with field trouble would know that this is never ending story, regardless of whether it is ue side issue or network side issue. Handover parameter optimization in lte selforganizing networks. User information is sent all the cell belongs to active set. Handover parameter optimization in wcdma using fuzzy controlling. Abstractthe aim of this paper is to present the impact of different sho parameters on umts network performance in indoor environment. Wcdma, radio network controller, handover, troubleshooting. Jan 04, 20 3 g huawei wcdma rno parameters optimization 1. Parameter optimization our previous work on wcdma parameter optimization includes studies on pilot power optimization 40,41, optimization of admission control and power parameters,14 and multiparameter optimization including optimization of handover parameters 39. The parameters are regularly adjusted in order to improve performance. Parameters optimization for handover not in time when taking the elevator case 5. Download citation wcdma handover parameters optimization wcdma soft handover is assisted by mobile stations measurements of the monitored and active set cells quality. Determine parameter values list the form for changing parameters original parameter values vs.
By this we can obtain stabilized handover performance with the changes in user equipment mobility. Jun 16, 2011 soft handover in practice is a complex technique. Optimization of soft handover parameters for umts network. Selfoptimization of handover parameters in lte networks. Candidate will be able to optimize rf, 3g services and quality parameters using kpi. The purpose of the adjustment of the 3g2g handover parameters is to offer the users with dual terminals a quality, equal or better than those ones with only 2g. Parameter optimization for mobility robustness handover in lte. The task of radio resource management rrm is to optimize the use of the available. Pdf handover parameter optimization in wcdma using fuzzy. Summary this paper validates the feasibility of automated optimization of key wideband code division multiple access wcdma radio resource management parameters using control methods. In fdd, the cells in the active set are involved in soft handover. Consequently, this paper copes with the optimization of the cell individual offset cio in the soft handover algorithm with the goal to reduce the networks outage probabiliy. Introduction wcdma wideband code division multiple access technology introduces other kind of handovers, namely sho soft handover and sfho softer handover. At the end of workshop, vendor specific reports, traces and counters will be used to study and optimize the network.
Wcdma technology provides some advantages for the operator in that it allows the data, but also improves the voice of base. Selfoptimization of handover parameters in lte networks veronique capdevielle, afef feki alcatellucent belllabs, france email. A soft handover occurs, when two or more bss serve a ms simultaneously. Responsible for parameter optimization nokia, optimum tuning of various parameters for improving site kpi. Soft handover gives an additional macro diversity gain against fast fading by. The course focuses on the parameters and features which can be used to finetune a wcdma air interface. Hence the self optimization techniques are developed to adjust handover parameters. Huawei wcdma radio parameters optimization cases mobile. There is wide range of mobility supported in lte it starts from 0 kmhrs to 350 kmhrs for user equipment. Pdf intersystem handover parameter optimization researchgate. Wcdma can offer a lot more voice minutes to customers. The optimal setting of handover parameters are done by handover failure rate and also the ping pong handover rate.
Parameter optimization improves service quality and utilization of network resources. The universal mobile telecommunications system umts is a third generation mobile cellular system for networks based on the gsm standard. Current stateoftheart optimization methods adapt physical parameters, such as the antennas tilt or azimuth. The following example will describe soft handover for best case scenario. The optimum parameter design for wcdma intrafrequency. Wcdma handover optimization guidelines sebastian pons, florentino jimenez.
Number of reporting events triggered for handover and handover delay are key performance measures in this paper. Autotuning and selfoptimization of 3g and beyond 3g mobile. One of the use cases defined in this field is the optimization of the handover ho process, which leads to a tradeoff between. Five types of handover parameters are defined in lte 22 and wcdma hspa 23. Developed and maintained by the 3gpp 3rd generation partnership project, umts is a component of the international telecommunications union imt2000 standard set and compares with the cdma2000 standard set for networks based on the competing cdmaone. Simulations were conducted for a synthetic, non regular network layout and the simulation models deal with the radio channels and radio connections in a standard lte downlink system 4. Huawei wcdma rno parameters optimization authorstream. Performance, handover, handover algorithm, optimization, lte. Automated optimization of key wcdma parameters semantic scholar. The red curve indicates decreasing reference signal received power rsrp p a received by ue from enba and the blue curve gives increasing rsrp p b received by.
Wcdma mobility troubleshooting studies and enhancements core. Handover parameters and optimization metrics the ho process can be controlled by two parameters. It is also called 3g system, allow for faster data transfer than gprs and edge and also let you talk while you transfer data. Fp7 ictsocrates handover parameter optimization in lte selforganizing networks td 1010068 cost 2100, 10th mcm athens, greece february 3rd 5th tubs, braunschweig, germany. Accordingly, the parameter qrxlevmin is the main driver for the w2g reselection. Introduction to umts optimization course courses wray. Radio network tuning and optimization for wcdma presentation 12 115 ericsson internal tems investigation supports more than devices from all major vendors across multiple technologies simple and effective data collection automatic detection of devices customizable workspaces that can be shared between users. Optimizing the parameters of handover in lte using son system. The control parameters are tuned by the optimization algorithm to increase the handover performance of the network.
Thomas jansen, tu braunschweig, institut fur nachrichtentechnik 1117. Parameters optimization for corner effect case case 2. Rf planning and optimization engineer resume in patna, br. Maybe some tradeoff considerations need to be considered to assure the maximal improvement in the whole view such as coverage. In software lifecycle there can be challenges related with different software.
Telecom 2g,3g,4g,rf lte drive test,optimization,ipv6 study. Interrat handover execution requests resources in the gsm system, according to the proposal received from the interrat handover evaluation algorithm. Who would benefit those who require an introduction to the principles and techniques that relate to optimizing the umts fdd mode radio access network ran. We investigate optimal parameters for the wcdma intrafrequency handover algorithm and the impact of each parameter on the system performance. Solution for radio optimisation in 3g service new challenges are there for qos, because of new wcdma radio.
Huawei wcdma rno parameters optimization authorstream presentation. The details on the handover parameters of the lte networks are described. Handover parameter optimization in lte self organizing networks. Intersystem cell reselection parameter optimization. Wcdma handover parameters optimization researchgate.
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