Macrocellfemtocell network architecture download scientific. The femto gateway performs signaling protocol conversion and in some implementations bearer voice, video channel conversions. Cell phone 4g lte repeater booster femtocell hackaday. Femto cells connect locally to mobile phones and similar devices through their normal gsm, gprs, umts or lte connections, and then route the connections over a broadband internet connection back to the mobile network, bypassing the normal cell towers. Verizon, samsung tout lte network extender indoor femtocell. Attocom developement and testing of lte enodeb femto cell. Trial software description code and resources lte femtocell density modelling. Finally section 5 contains the conclusion of this paper. Femtocells improve the lte business case while also providing the best possible user experience. Samsung and verizon announce plans to deliver lteu small. This article is within the scope of wikiproject telecommunications, a collaborative effort to improve the coverage of telecommunications on wikipedia. New femto forum research details benefits of femtocells for. It concludes that operators choices will be driven by their existing infrastructure, how quickly they want to roll out femtocells and how widely they plan to deploy them. Femto cells application software software controls overall.
Using 3d geometry, pathloss models were created in order to calculate interference levels and hence to estimate system performance as the density of the femtocell deployment increases. Huawei discontinued their 3g femtocells solution, not selling more femto access points. In addition to being the smallest in the family of small cell technologies, femtocells also use the lease amount of power. Henb lte femto network architecture small cell forum. Currently, octave code is available for test and simulation of downlink transmit and receive functionality. The fact remains that early lte trials and deployments, including any form of lte femtocell, are not yet underway. Femtocell vendors either develop this themselves, or. Femtocells tutorial multiple page tutorial addressing a number of aspects of femtocell technology. Todd mersch, director of product line management white paper.
The guide concludes that operators choices will be driven by. Lte epc bras internet bt broadband home hub lte femto cell a femocell is a very small cell designed to cover a large house with broadband and to about 30m outside the house for voice and web browsing. Mec architectural implications for ltelte a networks. Jan 25, 2016 verizon enterprise solutions and the networks division of samsung electronics america announced the availability of the 4g lte network extender for enterprise designed to enhance wireless coverage. Femto forum major deliverables business case full analysis has been recently released interference management whitepapers 3g and lte ue power consumption femto forum current focus. Femtocell vendors either develop this themselves, or buy it in from a software house.
An lte small cell, also known as a home enode b henb or a femto cell, provides lte basestation functionality in a very small, costeffective form factor, ensuring the highest data capacity and. Oct 07, 2014 bt research and innovation has been using matlab to gain insights into the likely performance of lte small cell deployments. Femtocell components and building blocks 3g and lte. We evaluate our approach using a real experiment performed on a long term evolution lte femto cell testbed. Befemto webpage broadband evolved femto networks future use of femtocells. It connects to the service providers network via broadband such as. Nov 11, 20 a femtocell is the cell controlled by the femto base station. Femtocells on wilson street resource dealing with the social impact, and business case for femto cell technology. Architecture of lte femtocellmacrocell integrated network. Architecture of ltetdd femto to support hotspot and challenges ip network epc aritels femto rf converter rf converter ltetdd router wifi ap ue technical challenges support 67816 mhz bw access to white space database development of oam system satisfy tvws spectrum mask additional uldl configuration control rf converter and. By integrating and deploying 4g femto cells like casa systems apex ultrabroadband solution in our networks, telefonica will be able to deliver customized services and technologies for covering. New femto forum research details benefits of femtocells. The figure below illustrates the system architecture and context for femtocell operation. Femtocells must comply with the 3gpp standards, including communicating with handsets and femtocell gateways using predefined protocol messages.
One of the biggest technical drivers of broadband femto. It will reduce network infrastructure cost and reduce traffic on traditional radio network. In this section we take a quick look at the proposals for the lte femtocell architecture. On the other hand, the femto users can assign only the vacated subcarriers from the. The main difference between a femtocell and a base station is the range. Apr 05, 2012 lteltea son for femtocells mischa dohler slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The growing interest in lte femtocells amongst the operator community is being driven by two principal factors as outlined in a femto forum whitepaper entitled.
It was formally submitted as a candidate 4g to itut in late 2009 as meeting the requirements of the imtadvanced standard, and was standardized by the 3rd generation partnership project in march 2011 as 3gpp release 10 the lte format was first proposed by ntt docomo of. Femto forum outlines lte femtocell architecture options. Lte is a 3gpp wireless technology with highspeed data for mobile phones and data terminals. While samsung has rolled out hundreds of thousands of 3g femtocells for verizon wireless, its still in the early stages when it comes to lte femtocells in unlicensed spectrum, or the. Feb 17, 2012 femto lte a hardware design challenges. Product t2k market segment t2100 lte residentialsoho. Lte femtocells ever since the inception of 3glte, with its major increases in capacity and performance, there has been much ado about the role that femtocells might play in the rollout of this new cellular technology. Pdf femtocells are small, userinstalled base stations that enhance coverage for inbuilding cellular services. Refer lte tutorial for lte system basics and architecture interfaces. The fap appears to a mobile device as an outdoor macrocell. Pc8608 for lte tdd and pc8609 for lte fdd networks, phy support 2 x 2 mimo and aas.
A broader term which is more widespread in the industry is small cell, with femtocell as a subset. Lte overlay cognitive femtocells system can provide a satisfied throughput for the macro and the femto users. The standard is described in 3gpp release 8 and 9 specifications. This further reduces interference within the femtocell layer. Femto cells architecture lte femtocell architecture. If youve never heard of a femtocell, now would be a good time to learn. Lteltea son for femtocells mischa dohler slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Sep 10, 2015 samsung and verizon announce plans to deliver lteu small cells. May 17, 2011 femtocells improve the lte business case while also providing the best possible user experience. Femtocells benefits, challenges and deployment scenarios. It should also be kept in mind that the femto base station is a small low powered device and it should be able to handle the complexity of these techniques. A base station might have a radius of 2030 km, whereas a. If bpl0, deploying an indoor system is equivalent to adding small cells to the center of a large cell.
Using 3d geometry, pathloss models were created in order to calculate interference levels and hence to estimate system. Femto forum outlines lte femtocell architecture options as. Currently, octave code is available for test and simulation of downlink transmit and receive functionality and uplink prach transmit and receive functionality. A survey on power control techniques in femtocell networks.
Femtocellssmall cells are considered to be key to nextgeneration. The guide concludes that operators choices will be driven. London, uk the femto forum, the independent industry and operator association that supports femtocell deployment worldwide, has published an operator friendly guide to the lte femtocell architecture options in the 3gpp standard. In more remote areas it is sometimes possible to get good cell phone reception by standing up high on a roof to get line of sight with one of the local base stations which may be as much as 10 miles away or more. It supports ofdma modulation in the downlink and scfdma modulation in the uplink. A femtocell is the smallest type of small cell used to expand cellular network connectivity within a targeted geographic area typically a small, single location. Of the x mobile data growth expected in the next five years, at least 80% will come from indoor locations.
The highlevel network architecture of lte is comprised of following three main components. Aug 26, 2016 architecture of ltetdd femto to support hotspot and challenges ip network epc aritels femto rf converter rf converter ltetdd router wifi ap ue technical challenges support 67816 mhz bw access to white space database development of oam system satisfy tvws spectrum mask additional uldl configuration control rf converter and. Provides a unique focus on radio protocols for lte and lteadvanced ltea giving readers a valuable understanding of lte radio protocols, this book covers lte longterm evolution layer 23 radio protocols as well as new features including lteadvanced. Dsl standardisation body objective is to reuse tr069 framework for zerotouch provisioning of femtocell access point. In section 3, functionality of different components of the 4g femtocell network is explained. To integrate the l2l3 stack with mindspeed phy, optimize, system testing and customer demonstration in 6 months. The flexible, configurable software supports current and nextgeneration 3g and lte small cell applications, thereby eliminating the need for costly infield hardware upgrades. Casa systems to deliver 4g femto cell network equipment to. It is divided into two sections to differentiate between the two technologies characteristics. Samsung and verizon announce plans to deliver lteu small cells. In telecommunications, a femtocell is a small, lowpower cellular base station, typically designed for use in a home or small business. Ue henb henb gwlte mme sgw hss csg list srv s1 s6a uu s1mme s1u s11 vplmn. The connection between the femtocell and the femtocell gateway uses secure ip encryption ipsec, which avoids interception and there is also authentication of the femtocell itself to ensure it is a valid access point.
The cell boundary control feature is discussed in later sections of this paper. Verizon enterprise solutions and the networks division of samsung electronics america announced the availability of the 4g lte network extender. Barcelona prweb february 25, 2014 nodeh gmbh, the leading supplier of umts small cells software technology, has announced the availability of its residential lte femtocell software solution running on oem platforms based on the broadcom highperformance bcm6173x 3glte dual mode residential small cell systemonachip soc. Nodeh residential lte femtocell software supports volte. The femto access point fap is a hardware device located at the customers premise that interfaces with mobile devices overthe air radio interface. Femto forum major deliverables business case full analysis has been recently released interference management whitepapers 3g and. Openlte is an open source implementation of the 3gpp lte specifications. This paper provides an operator friendly guide to the lte femtocell architecture options outlined in the 3gpp standard. Typically femtocells are connected to the internet and the cellular operators network via a dsl router or cable modem. Femto forum ffsmall cell forum l1l2 api interface to sdn. This section also discusses logical architecture of the 4g femtocell. Femtocell components and building blocks system technology.
Family of solutions for hspa enterprise femtocell applications rev. Femtocell network architecturelte,wimax,3g architecture. A femtocell is a device used to improve mobile network coverage in small areas. Femtocell radio technology introduction a femtocell is a small, lowpower cellular base station, typically designed for use in a home or small business. It was formally submitted as a candidate 4g to itut in late 2009 as meeting the requirements of the imtadvanced standard, and was standardized by the 3rd generation partnership project in march 2011 as 3gpp release 10. Of course, just as lte requires new network architectures in the macrocell ran, operators looking at lte femtocells need to carefully plan out their small cell architecture. Defining standards femtocell architecture and interface for 3g and lte. Start this article has been rated as startclass on the projects quality scale. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks. Based on this, td lte femtocell and fd lte femtocell exists. The project in this case involves integration of layer 2 and layer 3 software with.
The first section gives an overview about the challenges of managing and configuring femtocell networks, followed by a brief background on current mobile radio access technologies and system architecture for 3g and 4g networks. Lte advanced is a mobile communication standard and a major enhancement of the long term evolution lte standard. This keeps information about the users phone number, home network identity and security keys etc. Labview based softwaredefined physicalmac layer architecture for prototyping dense lte networks rohit gupta rohit. Lte femtocell reference designs pc8608 and pc8609 from pico chip. Building a linuxbased femtocell basestation using software. If you continue browsing the site, you agree to the use of cookies on this website. The femto gateway also performs the function of a security gateway by protecting the mobile network operator mno from attack attempts over the public broadband access at reference point fa. Typical transmit power is long term evolution evolved packet core broadband remote access server. Security, network integration, enterprise femto, etc. Based on this, tdlte femtocell and fdlte femtocell exists.
Lte femtocell manufacturers lte femtocell specifications. At the black hat hacker conference in las vegas, nv, on wednesday, a pair of security researchers detailed. Section 4 discusses proposed femtocell architectural arrangements. Building on the forums previous work on 3g femtocells, which helped create the. The demand for femtocells in both residential and office environments is growing rapidly. Verizon, samsung to test enterprise lteu femtocells. This report discusses device management for indoor femtocell deployment for 3g and 4g networks. A usim stores userspecific data very similar to 3g sim card. One of the listed operators is deploying now nokias 3g4g solution. First in a two part series on how to build a wireless femtocell using a single chip. It connects to the service providers network via broadband such as dsl or cable.
Femtocell network management systems in 3g and 4g indoor. Climbing up a ladder onto a roof to make a phone call or check your facebook profile is not particularly convenient, especially in high winds and rain or snow. Mec architectural implications for lteltea networks. Based on these reasons, different considerations should be taken when providing a classification of power control techniques in. Small cells call for scalable architecture richardson rfpd. Sep 11, 2015 while samsung has rolled out hundreds of thousands of 3g femtocells for verizon wireless, its still in the early stages when it comes to lte femtocells in unlicensed spectrum, or the.
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