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Design of Efficient Mobile Femtocell by Compression and Aggregation Technology in Cellular Network

First Progress Seminar on

Presented By Mr. Virendra A. Uppalwar IV Semester M. Tech. (Communication Engineering) Mr. Akshay P. NanoteAssistant ManagerGupta Energy Pvt.Ltd. Deoli, Wardha Prof. S.M. SakhareAss. ProfessorP.G. Department of Ele. & Comm.Suresh Deshmukh College of Engineering, Selukate, Wardha.

P. G. Department of Electronics (Communication Engineering)Suresh Deshmukh College of Engineering, Selukate, Wardha

ContentWhy Small CellsNetwork ProblemPotential SolutionWhy Femtocell ImportantEvolution of Cellular SystemPower Consumption of CellsTraffic TrendsFemtocell by FEMTOFORUMNeed of FemtocellBenefits of FemtocellWorking of FemtocellModule 1 : Deployment of Femtocell Nodes.

Why Small Cell ?

In homes and buildings where coverage decreases considerably as soon as you go indoors

It has become necessary to work on new technology that will facilitate calling coverage both indoor and outdoor

Improvement Small Cell technology could be the answer

Network Problem

Mobile cellular and 3G networks normally often suffer from poor penetration and reception in certain areas, like indoors.

This decreases the quality of voice and video communication.

It slows down high speed services.

Potential Solutions

RepeatersDual-Mode Wi-FiFemtocll

Why Femtocell is Important ?

It can provide indoor coverage for places where macrocells cant access.

It can offload traffic from the macrocell layer and improve macrocell capacity.

Addition of a femtocell layer will significantly improve the total network capacity by reusing radio spectrum indoors.

There is a growing demand for higher and higher data rates.

Femtocells can provide significant power saving to UEs.

The use of femtocells greener than macrocells.

Evolution of Cellular System : CELL SIZE

Power Consumption of cells

Macrocell: Rural, highway. Microcell: Urban, street. Picocell: building, enterprise, station. Femtocell: indoor.

Type Typical RangeTypical Output PowerMacro-Cell 1km - 70km20W - 60WMicro-Cell0.1km - 1+km5W - 10WPico-CellIn - Building0.1W 0.5WFemtocellIn - Room0.02W 0.1W

Traffic Trends

26% of calls placed at home. 57% of mobile usage at home or at work. 75% of 3G traffic to originate in-building by 2013.

NowFutureHome30%37.5%Outdoor40%25%Work30%37.5%

In the future, more and more indoor mobile usage

Femtocell : by FEMTOFORUM

Femtocells are low-power wireless access points that operate in licensed spectrum to connect standard mobile devices to a mobile operators network using residential DSL or cable broadband connections.

Femtocell base station is also known ashome base station, home access point, or home Node B.

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Femtocells a low-power domestic access point

Small-size cellular base stations (BSs) for residential or small business environments

Improve indoor coverage and capacity With internet

Typically support 2 to 6 concurrent users

An alternative method to Fixed Mobile Convergence (FMC)

The concept is applicable to all wireless standards, including UMTS, GSM, CDMA-2000, TD-SCDMA and Wi-MAX solutions also for LTE.

Why Needs of Femtocell? BASIC COVERAGE

Problem with Macro Cell :RF coverage holesNeed to improve voice coverage

Femtocell Solution:Provide basic service coverageHome/Enterprise coverageMainly applies to : Operators for suburban/rural coverage

Why Needs of FEMTOCELLS ?

CAPACITY ENHANCEMENT

Problem with Macro Cell:Data loads exceeding capacity.Limited macro enhancement ability. (Higher power may induce higher interference.)Increase capacity economically by offloading to femtocells.

Femtocells Solution:Provide localized capacity.Increase overall capacity.Mainly applies to : Highly saturated operators.

Benefits of Femtocell Network : FOR OPERATORS

Low cost solutionImprove reliabilityIncreases both coverage and capacityReduce coverage holes and create new converged servicesReduce macrocell backhaul capacity requirementsWorks with all existing handsets no need for expensive dual-mode (3G + Wi-Fi)Increases Next-Gen adoption

Benefits of Femtocell Networks : FOR END-USERS

Excellent network coverage when there is no existing signal or poor coverage

Higher capacity, which is important if the end-user uses data services on his/her mobile phone Depending on the pricing policy of the MNO, special tariffs at home can be applied for calls placed under femtocell coverage

Working of Femtocell

A femtocell is installed at home and connected to mains power and a standard broadband IP connection (typically DSL) through to the mobile operators core network

Voice calls, text massages and data services are provided by the same systems

Femtocells operate at very low radiation power levels, and typically have a range of 10 meters

When users walk outside or out of range, calls are automatically handed over to the external mobile network

Unlike Wi-Fi access points, Femtocells operate using licensed spectrum and thus must be supplied and operated in conjunction with the mobile operator

Module 1 :Deployment of Femtocell nodes

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Problem DefinitionPublic vehicles like trains and buses are moving hotspots with many people

Users inside a moving vehicle may execute multiple handovers the vehicle may have a high penetration loss through its metallic enclosure, resulting in a poor network connection

so, it is important to minimize the signal load and drop calls within a fast moving vehicle

Objectives To improve efficiency of Handoff

To enhance efficiency of femtocell based Handoff

Explore the performance of cellular network in terms of Improvement in spectral efficiency

Proposed MethodologyWith the help of Network Simulator, mobile nodes will be created to deploy the femtocell network

User datagram protocol (UDP) will be used to form the communication link between mobile femtocell network

Data compression and aggregation technique will be used to increase the spectral efficiency of the cellular system after deployment of mobile femtocell network.

.For data compression, zipping technique will be used. It will be Lempel Ziv Markov Chain algorithm.

LZMA uses a dictionary compression algorithm whose output is then encoded with a range encoder using a complex model to make a probability prediction of each bit.

Deployment of Femtocell nodes

The path of codes in software

Energy Level and number of Communication

Deployment of Nodes

Data Transfer from node 4 to Node 29

Future Work - Module 2

Next Module will be

Development of Aggregation and Compression Technique for Mobile Femtocell Network.

Conclusion

Femtocells are on a road to nowhere

Unsatisfactory coverage and the increasing number of high-data-rate application are two driving forces for Femtocell development

Femtocells have the potential to provide high quality network access to indoor users at low cost

Improve efficiency of Cell phones

References[1] Pablo Munoz, Raquel Barco, Isabel De La Bandera, On the potential of Handover Parameter Optimization for Self-Organizing Network 2013.[2] Xiang Xu , Gledi Kutrolli , Rudolf Mathar , Energy Efficient Power Management for 4G Heterogeneous Cellular Networks 2013.[3] Sawan A. Saad , Mahamod Ismail , Rosdiadee Nordin ,A Survey on Power Control Technique in Femtocell Networks , 2013.[4] Chaganti Ramarjuna , Shaikh Asif Ahamad , Riddhi Rex Efficient SON Handover Scheme for Enterprise Femtocell Networks, 2014.[5] H. Zang , X. Wen , B. Wang ,A novel Handover mechanism between femtocell and macrocell for LTE based networks , 2010.[6] Z. Becvar , P. Mach ,Adaptive hysteresis margin for handover in femtocell networks , 2010.[7] I. Sharp , K. Yu ,Enhanced least squares positioning algorithm for indoor positioning 2013.

.[8] N. Sinclair , D. Harle , I. glover ,J. Irvine, R. Atkinson ,An advanced SOM algorithm applied to handover management within LTE , 2013.[9] J. A. del Peral Rosado , J. A. Lopez Salcedo , Joint channel and time delay estimation for LTE positioning reference signals , 2012.[10] S. Nielsen , LTE evolving towards local area in release 12 and beyond , 2012.[11] Views on rel-12 and onwards for LTE and units , Future Radio in 3GPP , Huawei Technologies, 2012.[12] Enterprise multi-femtocell deployment guidelines, Qualcomm Inc. 2011.[13] Next-Generation Mobile Networks (NGMN) Alliances, Recommendation on SON & O&M , Tech Rep. [14] M. Toril , V. Wille ,Optimization of handover parameters for traffic sharing in GERAN , 2008