Thursday, May 31, 2012

SKT unveils trials of multi-carrier LTE technology


SK Telecom (SKT), South Korea’s largest mobile network operator by subscribers, has announced the launch of a trial of multi-carrier Long Term Evolution (LTE) services. According to the Korea IT Times, the operator has said that its new technology enables LTE services to be offered in both the 800MHz and 1800MHz bands, with trials to initially be conducted in the area from the Gangnam Station in Seoul to the Kyobo Tower Crossroad. 


SKT has said that one of the major benefits of the technology is that, by allowing the use of additional spectrum bands it ensures effective and efficient use of frequencies. It is understood that by using the new technology the multi-carrier system optimally distributes mobile data traffic to each frequency band, helping to ensure that the network remains as congestion-free as possible.

HSDPA/HSUPA for UMTS from Harri Holma and Antti Toskala



WCDMA radio access has evolved strongly alongside high-speed downlink packet access (HSDPA) and high-speed uplink packet access (HSUPA), together called ‘highspeed packet access’ (HSPA).



Contents:-


1. HSPA standardization and background


2. HSPA architecture and protocols

  • Radio resource management architecture
  • Impact of HSDPA and HSUPA on UTRAN interfaces
  • Protocol states with HSDPA and HSUPA

3. HSDPA principles

  • HSDPA vs Release 99 DCH
  • Key technologies with HSDPA
  • High-speed dedicated physical control channel
  • BTS measurements for HSDPA operation
  • HSDPA MAC layer operation
  • L1 and RLC throughputs

4. HSUPA principles

  • HSUPA vs Release 99 DCH
  • Fast L1 HARQ for HSUPA
  • Scheduling for HSUPA
  • E-DCH transport channel and physical channels
  • Physical layer procedures
  • MAC layer
  • Iub parameters
  • UE capabilities and data rates

5. Radio resource management

  • HSDPA radio resource management
  • HSUPA radio resource management

6. HSDPA bit rates, capacity and coverage

  • General performance factors
  • Single-user performance
  • Multiuser system performance
  • Iub transmission efficiency
  • Capacity and cost of data delivery
  • Round trip time
  • HSDPA performance evolution

LTE Signaling, Troubleshouting and Optimization


Contents:-


1. LTE Standards, Protocols, and Functions

  • Network Elements and Functions
  • Area and Subscriber Identities
  • LTE Security
  • QoS Architecture
  • Radio Interface Basics
  • LTE Network Protocol Architecture
  • Protocol Functions, Encoding, Basic Messages, and Information Elements

2. E-UTRAN/EPC Signaling

  • S1 Setup
  • Initial Attach
  • UE Context Release Requested by eNodeB
  • UE Service Request
  • Dedicated Bearer Setup
  • Inter-eNodeB Handover over X2
  • S1 Handover
  • Failure Cases in E-UTRAN and EPC

3. Radio Interface Signaling Procedures

Nokia WCDMA RAN dimenstioning

Dimensioning is the initial phase of network planning. During dimensioning, the first configuration estimates and requirements for coverage, capacity and quality of service are planned. The approximate number of necessary base station sites and base stations, the average values for the power budget, cell size, capacity, and initial network configuration are estimated at this phase. The capacity requirements and the overall quality of service targets determine the selection of the RAN transport network and the transport interfaces of base stations and RNC GSM operators can use dimensioning to estimate the service capability of the existing network in case of site reuse.

LTE Functionality document


Contents:-


1. Overall functionality summary

  • Comparison of LTE vs WCDMA
  • LTE Radio Interface
  • LTE Radio Bearers
2.Radio Characteristics

  • Operating Bands - LTE FDD
  • Channel Bandwidth - Resource Blocks vs Transmission Bandwidth
  • UE Characteristics - UE Output Power, UE Max Power Reduction, Performance Capabilities
3. System Measurements

  • UE Measurements - Intra and Inter LTE, Inter RAT, RBS Measurements
  • Base Station - Transmitter Characteristics
4. Channel Structures

  • Initial Cell Access Steps
  • LTE Channel Structure - Resource Allocation
  • Channel Mapping
5. Synchronisation Signals & Cell Search

  • Cell Search
  • Physical Cell Identity and Detection of PSS and SSS
  • Primary Synchronisation Signal Structure
  • Reference Symbol Mapping

UMTS Radio Network Planning & Automated Optimization

A very Good E-Book on Understanding UMTS Radio Network Modelling, Planning and Automated
Optimisation.


Contents:-

  • Introduction to the UTRA FDD Radio Interface
  • Spectrum and Service Aspects
  • Trends for the Near Future
  • Propagation Modelling
  • Theoretical Models for UMTS Radio Networks
  • Business Modelling Goals and Methods
  • Fundamentals of Business Planning for Mobile Networks
  • Fundamentals of Network Characteristics
  • Fundamentals of Practical Radio Access Network Design
  • Compatibility of UMTS Systems
  • Network Design – Specialised Aspects
  • Introduction to Optimisation of the UMTS Radio Network
  • Theory of Automated Network Optimisation
  • Automatic Network Design
  • Auto-tuning of RRM Parameters in UMTS Networks
  • UTRAN Transmission Infrastructure Planning and Optimisation

Download from here to read more........



Verizon boosting its home broadband speeds


Verizon announced plans to introduce next month a new Internet service that will double the download speeds of its current top service, which is already the fastest mass-scale service in the country.


The company will also more than double the speeds of most of its current plans while also introducing another tier of service.


At the new top speed, consumers could download a two-hour HD video in less than two and a half minutes, according to the company, which announced its plans Wednesday.


Verizon said the faster speeds are meant to accommodate the changing ways people are using the Internet.


"The ways we used the Internet and watched TV over the past 10 to 15 years have dramatically shifted," said Bob Mudge, president of Verizon's consumer and mass market business unit.


"With the emergence of smartphones, smart TVs, Blu-ray players, tablets and gaming consoles that also serve as over-the-top devices, consumers need more bandwidth to receive the highest-quality experience," he said.


Though the company will not announce pricing until next month, it did outline the capabilities of its new and updated tiers.


Its top tier will have download speeds at a whopping 300 Mbps and upload speeds of 65 Mbps. Below that is another tier that keeps Verizon's current top download speed of 150 Mbps but bumps the upload speed up to 65 Mbps as well. These two plans are recommended by the company for households of five or more Internet-connected users who want the best available service.

Sony Announces Waterproof Android Phones, the Xperia Go and Arco S


Finally, a couple of phones that can survive soda spills and even accidental drownings.

Sony announced two waterproof smartphones on Wednesday. They both run dual-core processors, but one of the new handsets will ship with an outdated version of Google’s Android operating system.

The Xperia Go and the Xperia Arco S are both set for release in the third quarter of this year, though Sony officials haven’t yet said how much the phones will sell for when they launch. The Xperia Go, which will be called the Xperia Advance in the U.S., will ship running Android 2.3 (Gingerbread), though an upgrade to Android 4 (Ice Cream Sandwich) is promised.

The Xperia Arco S will ship with Sony’s skinned version of Android 4. The latest version of Android, Ice Cream Sandwich, debuted last November on the Samsung Galaxy Nexus and six months later, top phone makers such as Motorola, HTC, LG and Sony are still struggling to offer software updates to consumers. The Xperia Go’s use of Gingerbread is simply the latest example of this.

Telia reaches 140,000 LTE subscribers in Sweden


TeliaSonera has signed up 140,000 4G Long Term Evolution (LTE) mobile broadband subscribers in Sweden to date, the Nordic group revealed at the Open Mobile Summit this week, having launched 4G modem-based services in December 2009, LTE-compatible tablets in late-2011 and a smartphone supporting LTE in February this year.

As reported on the GSMA’s website, the head of TeliaSonera’s mobility division, Hakkan Dahlstroem, told delegates at the London summit that the number of 4G customers at its subsidiaries is growing in line with network expansion. The company has now expanded its LTE networks to cover two-thirds of the Swedish population and around three-quarters of Danish inhabitants, although Dahlstroem declined to give subscriber figures for Denmark or any of its five other LTE markets in the Scandinavian and Baltic regions.

 TeliaSonera had previously given a rough estimate of ‘around 100,000’ LTE subscribers across all its markets by February/March 2012, with the lion’s share in Sweden, TeleGeography notes.
Dahlstroem also revealed that TeliaSonera was preparing to compete with third-party, over-the-top (OTT) communications applications such as WhatsApp and Skype, by developing a Rich Communication Suite (RCS) type service (integrating functions such as instant messaging, image/video sharing, voice calling, presence information, SMS and MMS), which he said was in response to demand from its customers.

China warns of tit-for-tat action over anti-dumping case by EU


In a tit-for-tat move, China today warned that it will probe illegal EU subsidies to counter Brussels' reported decision to launch anti-dumping cases against Chinese telecom firms for receiving subsidies. 


With the European Union reportedly poised to launch trade cases against telecom equipment makers in China, accusing them of getting subsidies, Beijing is investigating if the EU is actually illegally subsidising its industries, state-run China Daily reported today. 


The industries include "agriculture, telecom equipment, wind energy, electrical and mechanical goods", and China has already "obtained sufficient evidence," the source, who requested anonymity, said. 


The remarks followed a recent report by the Financial Times that EU is set to launch trade complaints and investigations against Chinese makers of mobile network equipment, including Huawei and ZTE, as soon as next month. 


An official from the Ministry of Commerce told China Daily that China has not got any official confirmation from the EU on the matter. 


"If the report is correct, China will not put up with such trade protectionism," the official said. 


For its part, Huawei strongly denied the allegation that it received government subsidies. 


"We deny claims made in the media that Huawei employs dumping practices and has benefited from State subsidies. We also object to the investigation that the European Commission is reportedly launching on the basis of these claims," state-run Global Times quoted a Huawei statement as saying. 


Sweden-based Ericsson, a major rival of Huawei, said on Monday it is against the probe by the EU commission into Huawei and ZTE for the claim that they may be selling products in Europe below cost. 


Ulf Pehrsson, head of Ericsson's government and industry relations, said, "Ericsson is a strong supporter of free trade and we don't believe in this type of unilateral measure," Global Times report said. 


"With its rising industrial competitiveness driven by labour cost and R&D advantages and expanding global market share, China has increasingly become a target of trade complaints, especially at a time when the manufacturing industry is shrinking in the developed countries," Zhang Jianping, a researcher at the Academy of Macroeconomic Research under the National Development and Reform Commission, told the Global Times today.

Nokia Siemens Networks to give equipment for Kolkata Metro


Telecoms equipment maker Nokia Siemens Network will provide equipment for the Kolkata metro line used for signaling and communication between train and railway regulation control centers.


"Reliable railway communications is vital to address the increasing traffic density while ensuring better passenger services and safer operations. NSN's GSM-R solution will help Indian Railways provide a better and safer service," head of India operations Sandeep Girotra said in a statement on Wednesday. The value of the contract was not shared.


This will further improve the safety and reliability of the Kolkata metro line while lowering operational costs for Indian Railways, the gear maker said and added that it already supports extensive rail network spanning 3,500 km across four zones.

Wednesday, May 30, 2012

A white paper on LTE Basics and Architecture


Long Term Evolution (LTE) is the next step forward in cellular 3G services. Expected in the 2008 time frame, LTE is a 3GPP standard that provides for an uplink speed of up to 50 megabits per second (Mbps) and a downlink speed of up to 100 Mbps. LTE will bring many technical benefits to cellular networks. Bandwidth will be scalable from 1.25 MHz to 20 MHz. This will suit the needs of different network operators that have different bandwidth allocations, and also allow operators to provide different services based on spectrum. LTE is also expected to improve spectral efficiency in 3G networks, allowing carriers to provide more data and voice services over a given bandwidth.


This technical white paper provides an overview of the LTE physical layer (PHY), including technologies that are new to cellular such as Orthogonal Frequency Division Multiplexing (OFDM) and Multiple Input Multiple Output (MIMO) data transmission.


Overview of the 3GPP Long Term Evolution Physical Layer


  • Single Carrier Modulation and Channel Equalization
  • OFDM and OFDMA
  • MIMO and MRC
  • Modulation Parameters
  • Downlink Multiplexing
  • Mapping Downlink Physical Channels to Transport Channels
  • Mapping Uplink Physical Channels to Transport Channels

Apple's need for iPhone touch panels could hurt other vendors


Apple will need a huge number of LTPS, or low-temperature poly-silicon, screens to maintain the Retina Display resolution on its next iPhone, a move that could make life tough for its rivals, according to DigiTimes.


Citing the usual "Taiwan-based supply chain makers," DigiTimes said the next iPhone will will require the use of LTPS technology to offer a resolution of 326 pixels per inch. LTPS displays can achieve higher resolutions than those possible with regular active-matrix LCD screens.


But production of such screens will be in short supply. Manufacturers LG Display, Japan Display, and Sharp combined can produce about 95 million LTPS panels each quarter. Assuming a successful yield rate of 75 percent, that equals between 71 million and 72 million panels, DigiTimes' sources said.


However, Apple is likely to require about 70 percent of the total yield of the panels to meet demand for the iPhone, this year and in 2013. As such, other smartphone vendors will be hard pressed to find enough supply to fill their own needs.


Of course, this type of situation is hardly new or unique. Apple has a history of grabbing a hefty percentage of certain components for its products, leaving the rest of the industry to fight over the remaining scraps.


iPhone sales could fall to 25 million in the current quarter from 35 million last quarter, the sources estimated. But sales will ramp up to 40 million or higher in the third quarter and 45 million in the fourth quarter, they added.

Long Term Evolution (LTE) - A Tutorial

LTE - Long Term Evolution also known as 4G technology has lots of benefits like higher data rates, backward compatibility, reduced capax via simple architecture, wide application over TDD and FDD etc.


Lets see LTE network aspects and functionality overview.


  • Introduction
  • LTE Architecture

Apple iPhone 5 likely to launch by Sept. or Oct

Another analyst is eyeing a September or October debut for the next iPhone.

Picking up on the same launch time frame as the iPhone 4S, the iPhone 5 would likely be here before or by October, according to RBC analyst Amit Daryanani. Releasing an investor report today, Daryanani added that the new iPhone should come with the latest 4G/LTE technology and offer a redesign over last year's model.

"Since the launch of the original iPhone, Apple has updated the product annually (eg. iPhone 3GS and iPhone 4S) and has redesigned the phone every ~2 years (eg. iPhone 3G and iPhone 4)," the analyst wrote. "In our view, consumers are becoming aware of the product cycle and we believe this should cause increased seasonality in the product as consumers await updated and fully remade iPhones."

The next iPhone will likely continue the tradition of scoring huge sales for Apple. Since the original version was released in 2007, the iPhone has grown to account for more than 40 percent of Apple's total revenue, according to Daryanani. Gross margins on the iPhone are the highest among all of the company's product categories, also ringing in at more than 40 percent.

And Apple still has room to grow. Its share of the overall mobile phone market was only 7.9 percent for the first quarter, according to Gartner. Daryanani believes Apple will continue to grab market share from its rival over the next few years if it keeps innovating and holding onto its "loyal subscriber base."
A focus on international markets such as China and the launch of smartphones at different prices points will also ramp up adoption of the iPhone and increase Apple's market share.
Assuming an October launch date, the iPhone 5's sales will kick in during the December 2012 and March 2013 quarters. The new phone should contribute higher unit sales over those of the iPhone 4S since "consumers have historically been attracted to the new design concepts created by Apple," the analyst added.
Apple holds a tight grip on the market. But there's always Android with its higher share of smartphone sales and Samsung with its latest and greatest phone nipping away at the iPhone.
"In our view, the iPhone represents a seamlessly synced enterprise and consumer product that should continue to gain market share in the near- and long-term," Daryanani said. "If a superior smartphone arrives that emulates the iPhone experience at a lower price point and begins taking share away from Apple, our positive view on the company would likely come under scrutiny."

Tuesday, May 29, 2012

Facebook set to enter into smartphone market


Facebook is all set to foray into the burgeoning smartphone market. Last year, the social networking major partnered with HTC to work on smartphone, which has been codenamed as Buffy.


New York Time has reported that Facebook may come out with its own smartphone next year. Employees of Facebook and engineers briefed on Facebook's plans, say the company hopes to release its own smartphone by next year.


The company has hired more than half a dozen former Apple software and hardware engineers who worked on iPhone, and one who worked on iPad, the employees and those briefed on the plans said. 


This would be Facebook's third effort at building a smartphone. In 2010, the blog TechCrunch reported Facebook was working on a smartphone. The project crumbled after it realized the difficulties involved, said people who had worked on it.


In the past, Facebook worked with HTC over two smartphones known as ChaCha and Salsa. Both the smartphones came with a dedicated Facebook key and tighter integration. Now the social network giant wants to go beyond just the dedicated key and Facebook integration.


A Facebook employee told NY Times, "Mark is worried that if he doesn't create a mobile phone in near future then Facebook will simply become an app on the mobile platforms."


When asked, Facebook did not deny or confirm that a project to build smartphone existed, but pointed to a previous statement it gave to AllThingsD last year that said that the company is working across mobile industry - with operators, hardware manufacturers, OS providers, and application developers.


Recently, Facebook entered into a strategic partnership with Trend Micro to help educate and protect users' digital life against malicious sites and malware.

Nokia reduces CO2 emissions at Nokia facilities by 17 percent


Mobile phone giant Nokia said its facilities' CO2 emissions decreased by 17 percent, compared with the 2006 level.


In 2011, Nokia reduced greenhouse gas emissions from offices and R&D premises by 15 percent per person, compared to 2006.


Nokia's renewable electricity share in 2011 was 193 GWh, which is equal to 40 percent and which reduced its CO2 emissions by 54,500 tons.


In 2011, Nokia's CO2 emissions from air travel have been reduced by 36 percent from 2008 base level "“ but are 2.8 percent more than in 2010.


"In 2011, Nokia total waste amount was reduced 23 percent in comparison to 2010. Nokia also managed to continue our trend of sending less waste to landfill. However, we're slightly behind our factory target of halving landfill waste each year," said Stephen Elop, CEO, Nokia.


Nokia showed progress on this front in 2011, installing fuel cells at its facility in Sunnyvale in the U.S. and a small biofuel station in Chennai, India.


During product creation, Nokia focuses on energy efficiency, sustainable use of materials, smart packaging, and creating environmental services which engage people to adopt more sustainable lifestyles. During the last decade, the greenhouse gas footprint of Nokia phones has been reduced by up to 50 percent.


Nokia also introduced new features and capabilities that allow the mobile device to become a multifunctional product, and thereby reducing the need to buy multiple devices for different purposes. 


Another major positive impact comes from providing innovative solutions that enable people to reduce their own environmental impact related e.g. to travel and commuting. The implementation of environmental requirements, both legal and customer specific, have key importance for its business success.


At the end of 2011, Nokia had approximately 6,000 collection points in almost 100 countries. Only about 9 percent of people say that they recycle their phones. Nokia works around the globe to raise awareness and to ensure proper and safe recycling and take part in collective recycling schemes. Currently, its challenge is to show people how recycling phones is both easy and beneficial and inspire them to take action.


Though Nokia is not part of an energy-intensive industry and the CO2 emissions and water use in its own facilities is relatively small, Nokia still has possibilities to control and reduce its environmental impacts. As the number of devices that can access Internet increases, the energy consumption of data centers becomes increasingly important.

The vast majority of Nokia device life cycle environmental impact comes from its supply and logistics chain.


In Kenya, Nokia commissioned a report in 2011 that showed only 14 percent of citizens are aware that mobile phones can be recycled, and only 2 percent actually recycle their old mobile phones.

Circuit Switched Fallback LTE to W-CDMA


CS domain services are the services that can be offered today in GSM-UMTS networks. Examples of such services are: voice and its supplementary services (e.g. call waiting, call forwarding), USSD, LCS, SMS, E911, LI, and even CS DUI video, etc. This rich set of CS domain features and capabilities are the result of years of standardization works in 3GPP and operators investments to their GSM-UMTS network.


In EPS, richer features/services can be offered to the end-user together with voice via IMS. While this is the case for EPS, it is challenging for some operators to launch EPS with data and voice/IMS from day one. Hence, these operators need a migration path to allow them to start from EPS with data only and allow the reuse of CS domain services until they get to the point where IMS voice can be added to the EPS.


Such migration path is possible with CS Fallback (CSFB) feature. CSFB is introduced in 3GPP Rel-8 to allow an UE in EPS to reuse CS domain services by defining how the UE can switch its radio from EUTRAN access to other RAT (e.g. GERAN/UTRAN/1xRTT access) that can support CS domain services. In addition, CSFB specification TS 23.272 also defines how the SMS is transferred to the UE natively via EPS from the MSC. It should be noted that this type of SMS delivery mechanism is defined in CSFB specification but the UE is not falling back to GERAN/UTRAN/1xRTT access.




LTE Encyclopedia



one stop resource for all information related to the 3GPP LTE standard 3GPP Long Term Evolution (LTE), is the latest standard in the mobile network technology tree that produced the GSM/EDGE and UMTS/HSxPA network technologies. It is a project of the 3rd Generation Partnership Project (3GPP), operating under a name trademarked by one of the associations within the partnership , the European Telecommunications Standards Institute.


Contents:-


  • LTE Systems Overview
  • Overall Network Architecture
  • LTE Physical layer, RLC & MAC Layer
  • Cell Reselection Procedures in LTE
  • LTE Acronyms
  • E-UTRAN and eNode Bs
  • Evolved Packet Core (EPC) and its Components
  • LTE Radio Link Budgeting and RF Planning


Download from here....


LTE Encyclopedia



LTE RAN architecture aspects

The Evolved Packet Switched System (EPS) provides IP connectivity between a UE and an external packet data network using the Evolved Universal Terrestrial Radio Access Network (E‐UTRAN)


It consists of an Evolved Packet Core (EPC) and Evolved UTRAN (E‐UTRAN)


The focus of this presentation is mostly on E‐UTRAN functions.



Voice over LTE Strategy

What is Voice over LTE ?

  • Voice service can be provided both by CS network or LTE network
  • No impact to legacy CS network if voice service remains in CS
  • LTE system is an all-IP network without CS domain
  • VoIP service can be provided on LTE system with IMS based voice call control functionality


Contents:-
  1. Alternatives of LTE voice solution
  2. Voice over LTE solution
  3. SRVCC enhancement
  4. Industry status on Voice of LTE


Download to know more......


Voice over LTE


MIMO Technologies in 3GPP LTE and LTE-Advanced

Multiple input multiple output (MIMO): 


Technologies introduced in LTE such as spatial multiplexing, transmit diversity, and beam forming are key components for providing higher peak rate at a better system efficiency, which are essential for supporting future broadband data service over wireless links. Further extension of LTE MIMO technologies is being studied under the 3GPP study item “LTE- Advanced” to meet the requirement of IMT-Advanced set by International Telecommunication Union Radio communication Sector (ITU-R).


Contents:-


1 Introduction
2 DL SU-MIMO in LTE
3 Transmit Diversity
4 Closed-loop Rank-1 Precoding in LTE
5 MU-MIMO in LTE
6 Dedicated Downlink Beamforming in LTE
7 Uplink Feedback in LTE
8 MIMO Schemes in LTE-Advanced
9 Performance Evaluation
10 Conclusion


Download to know more from here.....

MIMO Technologies in 3GPP LTE and LTE-Advanced





Training document on LTE Advance

Contents:-

  • Generals on LTE-Advanced
  • Overview of LTE-Advanced Technologies
  • More details on LTE-Advanced Component Technologies

Some LTE-Advanced Improvements are:-

  • Spectrum and Carrier Aggregation
  • MIMO Enhancement for LTE-Advanced
  • Uplink Multiple Access
  • Relay-1,2
  • Backhaul Resource Assignment



Read more from here......


LTE advance document

GameStop is expanding its Android tablet lineup, adding the tablets to more than 1,600 stores nationwide


GameStop is expanding its Android tablet lineup, adding the tablets to more than 1,600 stores nationwide.
The gaming retailer is now selling tablets like the Asus Transformer Prime, the Samsung Galaxy Tab, and the Acer Iconia.
GameStop promised that tablets sold through its stores will come equipped with "valuable extras," such as free games like Sonic CD and Riptide. The gadgets will also have the Kongregate Arcade gaming app and buyers will get a free issue of Game Informer Digital.
What tablets are on sale? The Asus Transformer Prime is available now for $499.99, while the 10.1-inch Asus Eee Pad Transformer is $349.99. The Acer Iconia Tab A200 will be $299.99 now through June 2, while the 7-inch 8GB Acer Iconia is $229.99. The 10.1-inch Samsung Galaxy Tab 16GB is also available for $399.99, and a Toshiba Excite 10 will set you back $449.99.
If your local GameStop is not selling the tablets, you can also purchase online.
GameStop also sells refurbished, first-generation iPads starting at $285. As GameStop noted, "cosmetically, the screen and body of the items show some signs of scratches, scuffs, or other wear typical of normal use."
The store allows shoppers to purchase new good with trades of games, consoles, or old iOS devices.
GameStop first started selling the Acer A100, Asus Transformer, and Samsung Galaxy Tab in 200 stores last October, and that now expands to 1,600 locations.
A month earlier, GameStop said it had selected the Android OS for an in-house tablet device with pre-loaded titles, but that has yet to be announced.
The move comes as more and more gamers are turning to smartphones and tablets for their gaming needs rather than standalone, handheld consoles. The Nintendo 3DS and Sony PlayStation Vita have seen somewhat sluggish sales here in the U.S., while game makers are increasingly showing off tablet-optimized versions of their games.

NTT DOCOMO selects Alcatel-Lucent to build IP network supporting LTE


NTT DOCOMO has selected Alcatel-Lucent to build NTT DOCOMO's Internet protocol (IP) network supporting its LTE services.

Alcatel-Lucent's7750 Service Routers will enable Japanese mobile operator NTT DOCOMO to improve speed and capacity of its IP network to address growing demand for mobile broadband services such as streamed movies and music, and multi-player video gaming in the country.

Based on its High Leverage Network architecture, Alcatel-Lucent's IP portfolio is ideally suited to address the demands of NTT DOCOMO's customers for increasingly sophisticated, high-bandwidth mobile services over the company's LTE Network.

Alcatel-Lucent's IP routers features integrated LTE Security Gateway functionality with IPSec (IP security) technology, a key requirement to securely transport LTE data for NTT DOCOMO. These routers can be expanded as customer demand grows.

They are efficient, using less space and power while increasing network performance. This characteristic is attractive in the Japanese market, where the power grid is under pressure due to electricity supply constraints and space is always at a premium.

"Our IP service routing technology provides an unrivaled solution for NTT DOCOMO to expand both capacity and performance of their network while keeping space and power consumption at the lowest level and offering a variety of easy options to upgrade the network as needed to address shifting demand," said Martin Jordy, president and managing director of Alcatel-Lucent Japan.

Alcatel-Lucent has partnered with Fujitsu to put together an offer for NTT DOCOMO's networking needs. Fujitsu proposed the 7750 SR as the best platform to address NTT DOCOMO's requirements. Through the collaboration with Fujitsu, Alcatel-Lucent will deploy its IP/MPLS solution and Security Gateway capabilities, based on the company's 7750 SR.

Monday, May 28, 2012

LG sells over 3 million LTE smartphones


It seems that LG Electronics’ global sales of their smartphones – in particular the LTE smartphone models, have touched (and passed by the time you read this) the magical three million unit mark. All right, three million is nothing magical when you compared it to what Apple has sold in terms of iPhone units, but when you think about the figure in terms of the LTE smartphone market, that is a lot of phone – in fact, it squarely places LG somewhere at the forefront of the soon-to-be competitive and burgeoning LTE market.
Just to recap your memory, some of the LTE smartphones by LG that have hit the market to date include the LG Revolution which was their first LTE model in the world that came out in May last year, the LG Optimus LTE that was the world’s first HD LTE smartphone, the LG Optimus Vu which came with a 5″ IPS display and 4:3 aspect ratio, the LG Optimus LTE Tag, and the LG Optimus LTE II. Did you in any way contribute to LG’s bottom line, and are you reading this from your LG LTE smartphone?

ZTE Cikey Has Won the Best LTE Device/Handset Award at LTE World Summit 2012


ZTE Corporation ("ZTE") (h share stock code:0763.HK / A share stock code), has announced that at the LTE World Summit 2012 held in Barcelona, the ZTE Cikey (Converged intelligent key), a multiple access terminal, has won the "Best LTE Device/Handset" award for its powerful user access functions and improvement of the mobile customer experience.
ZTE has won the LTE World Summit Award, which demonstrates the success of ZTE's efforts to promote the development of the LTE industry and ZTE's end-to-end LTE solutions. These developments include the Cikey and the WLAN+LTE network solution which uses ZTE MAB (Mutiple Access Binding) technology to seamlessly offload data traffic onto alternative networks to deliver the best possible quality of service to end users.
In the LTE era, users are faced with the choice of a variety of network access methods, and need to select the most economical mobile network access without impacting their mobile device experience. ZTE's MAB solution helps operators better coordinate the co-development of LTE, 2G/3G and WLAN networks, provides higher bandwidth through the aggregation of hybrid wireless networks, reduces operators' network investment costs and enables users to experience the best possible communications in the mobile data era.
"In response to the explosive growth of data services, ZTE has introduced these innovative MAB solutions, which can help operators to leverage existing network resources to provide users with better data services experience and enhance the competition force of the operators in the LTE era of mobile data services," said by Mr. Liu Jian Hua, President of Core Network Products, ZTE.
LTE World Summit 2012 brought global industry leaders together to talk about industry innovation and progress, and the LTE Awards 2012 acknowledge industry enterprises for their outstanding contributions to LTE technology. The Best LTE Handset/Device award won by ZTE is one of the most prestigious in the industry, as it is selected by representatives of leading service operators including British Telecom, Telefonica, AT&T, France Telecom and Deutsche Telecom.

Benefits of SON (Self Optimizing Networks) in LTE

The recent deployment of LTE to address the growing data capacity crunch, has highlighted the need and value of self-organizing capabilities within the network that permit reductions in operational expenses (OPEX), during deployment as well as during continuing operations. Self-optimizing capabilities in the network will lead to higher end user Quality of Experience (QoE) and reduced churn, thus allowing for overall improved network performance. SON improves network performance, but in no way replaces the wireless industry’s important need for more spectrum to meeting the rising mobile data demands from subscribers.


Contents:-


  • INTRODUCTION 
  • 3GPP EVOLUTION AND SON 
  • KEY LTE RELEASE 8, RELEASE 9 AND RELEASE 10 FEATURES SON
  • 4G AMERICAS OPERATOR USE CASES
  • RESULTS FROM LIVE OR TRIAL NETWORKS
  • SON CAPABILITIES IN HSPA+ TECHNOLOGY
  • SUMMARY AND CONCLUSION 
  • LIST OF ACRONYMS 
  • ACKNOWLEDGEMENTS 
  • REFERENCES




Planning & Optimization of LTE Network





This is one good document for understanding of Planning & Optimization of LTE Network.


Contents:-


  • Introduction
  • LTE Architecture & Physical Layer
  • Duplexing, Coding & Modulation in LTE
  • Cell Planning
  • Propagation Modeling
  • Network Performance Parameter
  • Optimization




Dimensioning of LTE Network

Description of Models and Tool, Coverage and Capacity Estimation of 3GPP Long Term Evolution radio interface:-

Contents:-

1. Introduction 
2. Long Term Evolution of 3GPP (LTE) and Dimensioning
3. Dimensioning of LTE Network
4. Coverage Planning and Radio Link Budget
5. Capacity Planning
6. Tool for LTE Dimensioning
7. Conclusion and Future Work
8. References


LTE RF Planning Guide

Contents:-




1. LTE AIR INTERFACE OVERVIEW AND BASIC SPECTRUM PLANNING
  • OFDMA, Number of Subcarriers, Symbol Size, Subcarrier Types
  • Frames
  • UL Allocation (SC-FDMA)
  • BASIC SPECTRUM PLANNING

2. RF LINK BUDGET

  • Effective Radiated Power
  • Effective Receiver Faded Sensitivity
  • System Gain
  • LIMITING RF LINK
  • BASE STATION TYPES
  • Watts to dB Conversion

3. RF PROPAGATION MODELS

  • HATA
  • COST-231 HATA
  • ERCEG-GREENSTEIN
  • COMPARISON OF MODELS
  • FACTORS IMPACTING PROPAGATION MODELS
  • LIMITATIONS TO COVERAGE

4. LTE CAPACITY

  • LTE FRAME STRUCTURES
  • LAYER 1 OVERHEADS
  • PEAK INSTANTANEOUS THROUGHPUT
  • MAXIMUM SUSTAINABLE THROUGHPUT & RETRANSMISSIONS
  • CAPACITY AND MPR AND CINR DISTRIBUTIONS
  • ANTENNA SCHEMES
  • WORKLOAD MODELING

5. RF ANTENNA SYSTEMS

  • ANTENNA PARAMETERS - Antenna Gain, Physical Size, VSWR, Power Rating, Polarization, Beamwidth, Front to back RatioDowntilt
  • SMART ANTENNAS

6. FREQUENCY REUSE

  • Resource Block Group Reuse Sub-Pattern
  • REUSE PATTERNS - 1x3x1, 1x3x3
  • CARRIER TO INTERFERENCE PLUS NOISE RATIO
  • LTE METHODS FOR REDUCING LOW CINR IMPACT
  • METHODS TO REDUCE CO-CHANNEL INTERFERENCE

7. INTER SYSTEM INTERFERENCE

  • Controlling Inter-System Interference
  • Interference Mechanism: OOBE and Overload
  • Coexistence with WiMAX

8. INTER-TECHNOLOGY ANTENNA SHARING

  • INTER-MODULATION
  • GATHERING CUSTOMER INFORMATION
  • DETERMINE GEOGRAPHICAL REGION
  • INTER-SYSTEM FREQUENCY COMPATIBILITY
  • SELECTING OPTIMAL ANTENNA SHARING GOALS
  • RE-MINING SPECTRUM
  • TDD WITH FDD
  • FINE TUNING ANTENNA CONFIGURATIONS