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Noticias TIC marzo  2013
Noticias TIC marzo  2013
Noticias TIC marzo  2013
Noticias TIC marzo  2013
Noticias TIC marzo  2013
Noticias TIC marzo  2013
Noticias TIC marzo  2013
Noticias TIC marzo  2013
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Noticias TIC marzo 2013

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  • 1. fam’s teleco news (Año3-Nº12/Marzo 2013) 1/12 Noticias TIC Marzo 2013…3 añosIndice:1.- Telefónica prueba VoLTE y demuestra integración de WiFi a la red.2.- Penetration loss in LTE.3.- Antenna Implants-Possible Future Trends.4.- LTE KPI Measurement Methodology and Acceptance Procedure.5.- Carrier Aggregation in LTE-Advanced – whitepaper.6.- Ericsson and Telstra successfully trial 1Tbps optical link.7.- Huawei Launches eLTE Broadband Trunking Solution.8.- SUBTEL: acceso a internet por cada 100 habitantes llega a 41% y banda ancha móvil se acerca a los 5 millones de conexiones.9.- Small Cell Forum launches Release One in new programme to drive operator deployments.10.- Energy Impact of Emerging Mobile Internet Applications on LTE Networks: Issues and Solutions.11.- Entel Chile selected Ericsson as sole supplier for its 4G/LTE network.12.- Próximos Eventos:1.- Telefónica prueba VoLTE y demuestra integración de WiFi a la red.Telefónica realizó, en el marco del Mobile World Congress de Barcelona, una demostración de laintegración entre la red móvil y Wi-Fi. La nueva tecnología permitiría cambiar de 3G o LTE a Wi-Fi demanera imperceptible para el usuario y sin perder cobertura, explicó la compañía. Ello permite resolver elproblema de congestionamiento de las redes móviles y la falta de cobertura en las zonas con una altadensidad de tráfico.Durante la exposición, la empresa realizó además una prueba de servicios de voz sobre LTE (VoLTE).La demostración se realizó en la banda de 2,6 GHz y con equipos Ericsson.Telefónica señaló que el servicio de voz sobre LTE supone un 40 por ciento de mejora en la calidad devoz y logra establecer una conexión 20 veces más rápida que una llamada 3G. Además, permitecombinarse con servicios de voz de alta definición, ubicación y Rich Communication Suit (RCS).Asimismo, afirmó que la solución permite priorizar unas secuencias de datos sobre otras, ofreciendo unservicio de alta calidad continuo y destacó que VoLTE emplea una única solución de radio en eldispositivo del cliente, permitiendo mantener las llamadas sin interrupciones cuando un cliente pasa deuna zona de cobertura LTE a otra sin ella.De: Telesemana.com Volver Índice2.- Penetration loss in LTE.Penetration loss in LTE indicates the fading of radio signals from an indoor terminal to a base station dueto obstruction by a building. For an indoor receiver to maintain normal communications, the signal mustbe sufficiently strong. The indoor receiver obtains radio signals in the following scenarios:
  • 2. fam’s teleco news (Año3-Nº12/Marzo 2013) 2/12 • The indoor receiver obtains signals from an outdoor transmitter. • The transmitter and receiver are located in a same building. See Figure belowThe link budget is only concerned with the scenario in which an outdoor transmitter is used and thesignals penetrate only one wall.The propagation modes of electromagnetic waves are as follows: direct radiation, inverse radiation,diffraction, penetration, and scattering.In areas where no indoor distributed system is deployed, electromagnetic wave signals are obtainedthrough diffraction and scattering. Therefore, the indoor Penetration loss in LTE is related to the incidentangle, building materials, terrain, and working frequency. Table below lists the penetration lossesassociated with typical buildings.Typical building penetration lossesIn the link budget, Penetration loss in LTE values depend on the coverage scenario. Therefore, coveragetarget areas are classified into densely populated urban areas, common urban areas, suburban areas,rural areas, and highways. Table below lists the area classification principles.Principles for classifying coverage scenariosThe building Penetration loss in LTE ranges from 5 dB to 40 dB. In link budget, if no actual test data in thetarget area is available, an assumed Penetration loss in LTE value must be used. The final assumption isalso highly dependent on local customer requirement.For example in sophisticated Asian Metropolis like Hong Kong, Singapore and Shanghai, the indoorcoverage expectation will be very high, hence requiring a high Penetration loss in LTE provisioning. Onthe other hand, in less developed market such as Africa and Latin America, customer expectation is lowerso the Penetration loss in LTE requirement can be reduced to reduce overall cost involved.During network planning, if no actual field testing data is available, refer to the Penetration loss in LTEvalues listed in Table below.
  • 3. fam’s teleco news (Año3-Nº12/Marzo 2013) 3/12De: Linkedin/Teletopix.org Volver Índice3.- Antenna Implants- Possible Future Trends.Over the past two decades, the world has been able to benefit from its significant wealth in knowledgerelating to telecommunications engineering. During this time, there has been an exponential growth in thefield of mobile communications, proving beyond doubt that people love to talk. Coincident with thissuccess there has been a massive increase in healthcare provision in the world combined with anassociated revolution in how treatment is offered to the patient. The simplicity and utility of technologieslike Global System for Mobile Communications (GSM) with voice, data, 3G with streaming video and 4Gwith its superior resource allocation all offer much to healthcare, particularly for non-secure medicaltelemetry. Discussed here is the future concept of 4G systems implanted into the body with bidirectionallink to the cellular network. This is different from current systems that communicate with implanteddevices over short range links (<410 m).
  • 4. fam’s teleco news (Año3-Nº12/Marzo 2013) 4/12Given the right safeguards for implanted mobile phone technology, it would for example be possible tomeasure the properties of a heart attack in real time and perhaps monitor the effects of treatmentsubsequent to the event, whilst allowing the patient freedom of movement. What would be needed wouldbe a system that could be implanted into a patient for short periods of time (perhaps several weeks) thatcould be used to transmit data out of the body and to a medical expert. In this context such a systemwould use data rather than voice, be non-real time with low isochronous application usage.What is envisaged might be low SAR (Specific Absorption Rate) flexible antennas just beneath the skinsurface for use with cellular systems and their vast networks of base stations. Such a system wouldcomprise a small telecommunications module with integrated micro controller and power supply attachedby cable to an antenna. The module, its battery and its associated sensors would lie inside the body. Tominimize SAR the antenna would lie as close to the outside of the body as practical but not outside theskin. The system would be encapsulated and screened to reduce energy interactions with tissue. Fromthe point of view of avoiding infection the proposal to have the whole system inside the body’s protectiveskin is of clear benefit. By not breaching the skin complications arising from infection; hygiene and painfulsnagging would be avoided. Furthermore such in-body systems would be invisible to other people andmay allow patients an extended freedom of movement and much more privacy. All of the componentsexcept the antenna are state-of-the-art. In considering the size of such antennas we are helped a great
  • 5. fam’s teleco news (Año3-Nº12/Marzo 2013) 5/12deal by the permittivity of the surrounding tissue which is generally high. Therefore, such antennas wouldtend to be much smaller than their free-space counterparts (for example about 25mm long for a half wavedipole at 900 MHz).It can be shown, for example with LTE wireless communications, that it would not currently be a problemsending 4G signals to a modem implanted inside a body cavity. However, because of the very strictlegacy limits related to medical implants, the tricky part of such a system would be how to get 4G signalsout of the body to a base station without exceeding SAR limits within the body. For a mobile handsetpower levels from a handset are limited to 2 Watts but are typically around 0.6 Watts split across severalchannels. However for medical implants the limit is 25 micro-Watts.The standards germane to this discussion are the Medical Device Radiocommunications Service(MedRadio) and the Wireless Medical Telemetry Service (WMTS). MedRadio has a spectrum between401 and 457 MHz. The more common devices realized have been implanted cardiac pacemakers anddefibrillators, and neuromuscular stimulators for physical mobility. WMTS has spectrum at around 0.6GHz and 1.4 GHz and has been used for sending data about such things as pulse and respiration rates toclose in receiving stations. A typical application would be a cardiac monitor wirelessly linked to a nurse’sstation for post operative care.The ability to communicate with an implant over a high bandwidth link would facilitate many newapplications and enhance existing applications such as pacemakers, implantable cardioverterdefibrillators, neuro-stimulators, hearing aids, robotic prostheses, artificial eyes, brain pacemakers tocontrol Parkinsons disease, monitoring of blood glucose levels for diabetic patients, stimulation andrecording of brain and muscle activity, swallowable pills for traversing the gastrointestinal tract andimplantable drug delivery systems.Implanted medical devices save lives, increase the quality of the user’s life, reduce the number of trips apatient has to make to a hospital and save billions of dollars in hospital beds, resources and doctors’ time.Lifesaving implants such as cardiac pacemakers, neuro-stimulators and pumps, have now becomeroutine and do not attract the negative media attention that normally follows attempts to create socalledbionic people. The cardiac pacemakers and defibrillators have grown into a multi-billion poundindustry since the first implanted pacemaker in 1958. As implanted antennas are aimed at the samemarket, improving the quality of life of severely ill patients or others who are at high risk of illness, it isexpected that it will be well received by both the medical community and patients alike.After all, antennas are implanted inside the human body as a method of treating tumors usinghyperthermia. Previously, battery power has been a limiting factor. A typical pacemaker uses less than10mW and the battery lasts 10 years. However, a long range medical biotelemetry system consisting of asensor(s), a battery, a 4G communications module and a low power subcutaneous antenna may onlyneed to be in place for a few weeks.DE: Telecom Insights
  • 6. fam’s teleco news (Año3-Nº12/Marzo 2013) 7/12During the phase of preliminary acceptance before commercial launch, KPIs will be derived from the drivetest analysis and stationary measurements, and this analysis and measurement are on the basis ofcluster which constitutes a group of sites (20-40 sites).Statistics KPIs are not proposed and measured at this stage as the traffic is insufficient, statistics will noteligible statistical result without enough samples.After on-going optimization while the traffic keeps increasing after commercial launch, the finalacceptance of the whole network performance on the basis of statistics will be implemented. However,the KPI values of statistics probably might not be same with those in drive test due to differentcalculations and considerations.LTE Service KPIs and LTE Network KPIsThe Field Test KPIs into two categories: LTE Service KPIs and LTE Network KPIs.Service KPIs are the KPIs that are not subject to be effected by cluster tuning and optimizationactivities, mainly determined by product performance, configuration and parameter setting, e.g. pingdelay, throughput, etc. I recommend that only one cluster (named pilot cluster) is selected for theevaluation and acceptance for the Service KPIs, no necessary for repeating the measurement in allclusters Based on the above reasons, the Service KPIs’ test is suggested to be performed by StationaryTest (ST) in the area with good RF conditions and close to the cell in order to eliminate the affect of poorRF or non-equipment factor and the test is proposed to be implemented under the condition of oneserving cell.LTE Network KPIs , such as Call setup success rate, Call Drop Rate, Handover Success Rate, which isdetermined by the radio network environment, planning and optimization capabilities, should beperformed on the Drive Test (DT) routes in rollout clusters.De: Teletopix.org Volver Índice5.- Carrier Aggregation in LTE-Advanced – whitepaper.In order to achieve up 1 Gbps peak data rate in future IMT-Advanced mobile systems, CarrierAggregation concept has been introduced by the 3GPP in its new LTE-Advanced standards (3GPPRelease 10 onwards). Carrier Aggregation is aimed to support very high data rate transmissions overwide frequency bandwidth (e.g. up to 100MHz). This paper gives an overview o Carrier Aggregation,including its types, cell configurations, its need and benefits. This paper also discusses in brief the majorfunctional changes required in PHY, MAC and RRC or Carrier Aggregation.De: 4G-Portal.com ; ver: http://www.slideshare.net/Nidhi_Arora/carrier-aggregation-in-lteadvanced- 17259749 Volver Índice
  • 7. fam’s teleco news (Año3-Nº12/Marzo 2013) 6/12 Volver Índice4.- LTE KPI Measurement Methodology and Acceptance Procedure.Here I write in simple word on LTE KPI Measurement Methodology and its Acceptance Procedure. As it’sfor only at network start up stage and now a day worldwide so many operator starts to launch LTE and sothis is the way for them to check of KPI in LTELTE KPI Measurement MethodologyThe KPIs are formulated to measure the network performance in terms of Accessibility, Integrity, Mobility,Retainability, and Subscriber perceived quality.LTE KPIs are mainly classified into 5 classes, which are, Accessibility, Retainability, Mobility, Latency,and Integrity. The KPI architecture is shown in the following figure.The above KPI classification fully considers the customer experience and focuses on the Quality ofExperience, providing a wide range of network KPIs to reflect network factors that are relative to theservice quality, using industry standards as reference to define network counters and KPIs.LTE KPI Acceptance ProcedureLTE network KPI acceptance procedure for the two phases, preliminary acceptance and final acceptance,are recommended as shown above.
  • 8. fam’s teleco news (Año3-Nº12/Marzo 2013) 5/12deal by the permittivity of the surrounding tissue which is generally high. Therefore, such antennas wouldtend to be much smaller than their free-space counterparts (for example about 25mm long for a half wavedipole at 900 MHz).It can be shown, for example with LTE wireless communications, that it would not currently be a problemsending 4G signals to a modem implanted inside a body cavity. However, because of the very strictlegacy limits related to medical implants, the tricky part of such a system would be how to get 4G signalsout of the body to a base station without exceeding SAR limits within the body. For a mobile handsetpower levels from a handset are limited to 2 Watts but are typically around 0.6 Watts split across severalchannels. However for medical implants the limit is 25 micro-Watts.The standards germane to this discussion are the Medical Device Radiocommunications Service(MedRadio) and the Wireless Medical Telemetry Service (WMTS). MedRadio has a spectrum between401 and 457 MHz. The more common devices realized have been implanted cardiac pacemakers anddefibrillators, and neuromuscular stimulators for physical mobility. WMTS has spectrum at around 0.6GHz and 1.4 GHz and has been used for sending data about such things as pulse and respiration rates toclose in receiving stations. A typical application would be a cardiac monitor wirelessly linked to a nurse’sstation for post operative care.The ability to communicate with an implant over a high bandwidth link would facilitate many newapplications and enhance existing applications such as pacemakers, implantable cardioverterdefibrillators, neuro-stimulators, hearing aids, robotic prostheses, artificial eyes, brain pacemakers tocontrol Parkinsons disease, monitoring of blood glucose levels for diabetic patients, stimulation andrecording of brain and muscle activity, swallowable pills for traversing the gastrointestinal tract andimplantable drug delivery systems.Implanted medical devices save lives, increase the quality of the user’s life, reduce the number of trips apatient has to make to a hospital and save billions of dollars in hospital beds, resources and doctors’ time.Lifesaving implants such as cardiac pacemakers, neuro-stimulators and pumps, have now becomeroutine and do not attract the negative media attention that normally follows attempts to create socalledbionic people. The cardiac pacemakers and defibrillators have grown into a multi-billion poundindustry since the first implanted pacemaker in 1958. As implanted antennas are aimed at the samemarket, improving the quality of life of severely ill patients or others who are at high risk of illness, it isexpected that it will be well received by both the medical community and patients alike.After all, antennas are implanted inside the human body as a method of treating tumors usinghyperthermia. Previously, battery power has been a limiting factor. A typical pacemaker uses less than10mW and the battery lasts 10 years. However, a long range medical biotelemetry system consisting of asensor(s), a battery, a 4G communications module and a low power subcutaneous antenna may onlyneed to be in place for a few weeks.DE: Telecom Insights

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