Frequency planning in GSM mobile (original) (raw)
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Frequency planning in cellular networks is an extremely onerous task. Manual allocation of frequencies for different cells in a cellular network is even more difficult due to overshooting cells in the network and limiting number of frequencies available in the spectrum; thus, leading to inefficiency in cellular radio systems. The substantial deployment and high growth of cellular networks give rise to the requirement of automatic frequency planning (AFP) tools. Such tools ensure optimum performance and coverage of wireless networks. These tools are based on different evolutionary algorithms which play a key role in the optimization of cellular networks and are frequently used by different cellular service providers for better network frequency planning. In this paper, AFP is implemented in real cellular network of different major cities of Pakistan using Automatic Frequency Optimization System (AFOS) tool. An instant decrease in call drop rate was observed ranging from 14% to 35% after the implementation of frequency plan from AFOS tool using baseband frequency hopping technique.
Frequency planning optimisation in real mobile networks
Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324)
Due to the annual increase of cellular subscribers, there is a growing interest by the network operators, in how to deploy the network infrastructure to achieve maximum capacity. A key point is the channel or frequency assignment, which implies efficiently assigning frequencies from a limited set, to each cell, while satisfying the electromagnetic compatibility constraints ' T h s work has been supported by Telefonica Moviles and by CYCIT project TIC 98-684
A Practical Approach of Planning and Optimization for Efficient Usage of GSM Network
Planning of wireless networks is vital if operators wish to make full use of the existing investments. This paper deals with a practical approach of radio network planning process for efficient usage of GSM network. The key performance indicator (KPI) and drive test report of a Bangladeshi operator " Teletalk Bangladesh Limited " are used to make proposals on how operators can optimize radio resources as well as provide the required QoS to the subscribers. This study would help to plan operators to enhance coverage, improve quality and increase capacity in the days to come.
The radio has been a large-scale development in recent years, with the advent of GSM (Global System for Mobile Communications) mobile phone. This growth is primarily due to the emergence of internationally accepted standards which facilitated the large-scale deployment, and also control technologies involving telecommunications, electronics and computers. Deploy these networks has been a great challenge for operators who have to master radio waves to completely new applications in relation to what was done since the beginning of the century. We went from broadcasting, personalized information and requirements for quality of service. On both issues, operators have made enormous progress in research on methods and planning tools that incorporate such models radio wave propagation, models for estimating quality of service and optimization algorithms on the setting.
Autonomous frequency planning for GSM networks
2004
Frequency planning is one of the more expensive aspects of deploying a network. If a set of base stations can be deployed with minimal service and planning, the cost of both deploying and maintaining the network will decrease. This paper presents a decentralized algorithm for base stations to determine their own parameters by listening to key information from other base stations. The synchronization information is sent via a lowpower spread-spectrum signal.
Automatic frequency planning and optimization algorithm for cellular networks
2012
Frequency planning in ever growing cellular networks is an extremely arduous task. Any effort to lay down manual frequency plans promulgates inefficiency in the cellular radio systems. The extensive deployment and penetration of cellular networks necessitate the need to carry out automatic frequency planning. This paper presents a novel and ingenious algorithm for automatic generation and optimization of the frequency plan whereby curtailing the intra-system interference levels within the acceptable ranges of the key performance indicators (KPI's) defined for any real time cellular network. The automatic frequency planning and optimization has been done using the concept of Inter-Cell Dependency Matrix (ICDM) which contains cell correlations in terms of the affect one cell has on the other primarily with regards to the co-channel interference. The proposed algorithm was simulated in MATLAB. It has been set forth and tested using inputs from live network data. It has been found t...
RF Optimization for call setup and analysis of GSM network using agilent tools
2016
The Call Set up Success Rate, successful handovers, and maintaining the quality of call are most important features used by all mobile operators. So, it is extremely necessary and mandatory to identify possible means to measure these parameters and eliminate the existing problems in a GSM network. Therefore the different operators can use various type of optimization process. RF optimization is used to make proposals on how operators can optimize radio resources as well as provide the required of service quality to the subscribers. Since call drop and call failure are the major problems in the GSM networks. So this RF optimization technique helps to solve this problem.
Frequency Plan Optimization Based on Genetic Algorithms for Cellular Networks
Journal of communications software and systems, 2020
Cellular networks are constantly evolving to ensure a better Quality of Service (QoS) and quality of coverage ever more important. The radio cellular systems are based on frequency allocation. In this context, frequency allocation principle consists in choosing an optimal frequency plan to meet traffic demand constraints and communication quality while minimizing the radio interferences. This paper proposes an optimal frequency allocation approach based on genetic algorithms to minimize co-channel and adjacent channel interference. The validation of this new approach is confirmed by the results of the work we have done in the GSM network. In fact, we used the file obtained by the OMC-R, which defines the adjacent cells of each cell and the frequencies allocated to the considered area. The results obtained clearly show the effectiveness and robustness of the approach used.
Assessment of cellular planning methods for GSM
12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598)
The performance of various cellular planning methods for GSM, which decrease co-channel interference without sacrificing traffic capacity, is evaluated. For measuring the advantages of each method, the Carrier-to-Interference Ratio, is calculated. The use of different clusters and the benefits of sectorisation in C/I are studied. An evaluation of the influence of Frequency Hopping on C/I is also done. The Multiple Re-use Patterns (MRP) method is investigated as well, and a comparison is performed with previous results. The results show that changing the size from 4 to 3 leads to a decrease in C/I of 2.6 dB. Several real antennas are studied for sectorisation, the best results being obtained for the 90º beamwidth one. The use of sectorisation, together with MRP, allows an increase in network performance, without visible additional costs.