Posts Tagged ‘LTE’
Written on August 31st, 2009 by ADMINno shouts
Smartphones are double-edged swords for carriers. They attract big-spending customers, but tax networks designed for simpler times, explains Fortune.
Independent telecom analyst Chetan Sharma estimates that the typical wireless subscriber consumes 120 megabytes each month; typical iPhone owners use four times that.
And it’s just getting worse. By 2010, global mobile data traffic is expected to exceed 200 terabytes per month, six times last year’s levels, according to Cisco Systems.
“3G networks were not designed effectively for this kind of usage,” says John Donovan, AT&T’s chief technology officer, referring to the current generation of broadband wireless. “We fight the day-to-day guerrilla warfare as the customers move around.”
Many of AT&T’s 60,000 cell towers need to be upgraded, with new 850 MHz gear and backhaul. That could cost billions of dollars, and AT&T has kept a lid on capital spending during the recession. AT&T will delay their LTE upgrade, upgrading its HSPA 3G network from 3.6 Mbps to 7.2 Mbps, instead.
Verizon plans to have 30 US LTE Markets by 2010. Verizon will use their nation-wide 700 MHz band. The carrier hopes to have a data-only LTE trial service available in Seattle and Boston later this year.
It can’t come soon enough. The tsunami is about to hit. Android phones from Samsung, LG, and Motorola are due in stores by early 2010. Motorola will launch their Android portfolio on September 10th. The data-oriented Palm Pre, which operates on Palm’s WebOS platform, is already on Sprint and should be in Verizon stores early next year.
A Cisco Mobile Forecast for 2008-2013 noted that a single high-end data phone today generates more data traffic than 30 basic-feature cell phones, while a single laptop air card generates more data traffic than 450 basic-feature cell phones. Cisco projects that mobile data traffic will increase a thousand-fold over the seven years from 2005 through 2012, with video being a significant component.
AT&T offers free Starbucks WiFi (with a paid data subscription) while Verizon is partnering with Boingo to deliver free WiFi access at hotels, airports, restaurants and coffee shops (with a data plan). PCCW, the Hong Kong operator, has started using Wi-Fi hot spots to ease the load from smartphones and its digital TV service.
AT&T CEO Randall Stephenson has said that the most active 5% or so of data users are causing problems for the other 95%. AT&T is working on a revamped data plan whereby light data users would pay less, and heavy users would pay a premium rate — or leave.
Source: Dailywireless
Written on August 29th, 2009 by ADMINno shouts
Smartphones are double-edged swords for carriers. They attract big-spending customers, but tax networks designed for simpler times, explains Fortune.
Independent telecom analyst Chetan Sharma estimates that the typical wireless subscriber consumes 120 megabytes each month; typical iPhone owners use four times that.
And it’s just getting worse. By 2010, global mobile data traffic is expected to exceed 200 terabytes per month, six times last year’s levels, according to Cisco Systems.
“3G networks were not designed effectively for this kind of usage,” says John Donovan, AT&T’s chief technology officer, referring to the current generation of broadband wireless. “We fight the day-to-day guerrilla warfare as the customers move around.”
Many of AT&T’s 60,000 cell towers need to be upgraded, with new 850 MHz gear and backhaul. That could cost billions of dollars, and AT&T has kept a lid on capital spending during the recession. AT&T will delay their LTE upgrade, upgrading its HSPA 3G network from 3.6 Mbps to 7.2 Mbps, instead.
Verizon plans to have 30 US LTE Markets by 2010. Verizon will use their nation-wide 700 MHz band. The carrier hopes to have a data-only LTE trial service available in Seattle and Boston later this year.
It can’t come soon enough. The tsunami is about to hit. Android phones from Samsung, LG, and Motorola are due in stores by early 2010. Motorola will launch their Android portfolio on September 10th. The data-oriented Palm Pre, which operates on Palm’s WebOS platform, is already on Sprint and should be in Verizon stores early next year.
A Cisco Mobile Forecast for 2008-2013 noted that a single high-end data phone today generates more data traffic than 30 basic-feature cell phones, while a single laptop air card generates more data traffic than 450 basic-feature cell phones. Cisco projects that mobile data traffic will increase a thousand-fold over the seven years from 2005 through 2012, with video being a significant component.
AT&T offers free Starbucks WiFi (with a paid data subscription) while Verizon is partnering with Boingo to deliver free WiFi access at hotels, airports, restaurants and coffee shops (with a data plan). PCCW, the Hong Kong operator, has started using Wi-Fi hot spots to ease the load from smartphones and its digital TV service.
AT&T CEO Randall Stephenson has said that the most active 5% or so of data users are causing problems for the other 95%. AT&T is working on a revamped data plan whereby light data users would pay less, and heavy users would pay a premium rate — or leave.
Source: Dailywireless
Filed under Communication Apps
Tags:3G, 4g, Android, AT&T, LTE, mobile marketing, Motorola, phone, Samsung, Verizon, WIFI destinations
Written on August 19th, 2009 by ADMINno shouts
Lots of interesting developments are happening in India at the moment. The first and the most basic being MNP or Mobile Number Portability finally becoming a reality. For the first time users will be able to move operators and retain their number. This will change the way the users will use their phones. For example most users use their mobiles as secondary phones for making calls while they give their land line numbers to important people. The reason being they are not sure how long they will stick with the current operator. If they change the operator they will get a new number. I think that this will definitely change with MNP.
MNP is not the only thing. Many operators and equipment manufacturers are waiting for the 3G spectrum auction for some time now. The auction was recently postponed for variety of reasons. The auction will let the private operators to bid for the spectrum and they can decide if they want 3G or WiMAX or LTE. The state run MTNL and BSNL have already launched 3G and in Northern India but there have been not many takers yet. Maybe the people are but sceptical right now or maybe the lack of devices. The other thing is that people are maybe not sure if the technology they invest in will be around tomorrow or not.
MTNL is keen to experiment with WiMAX but it does not want to do it alone. There are many companies in India that have developed WiMAX protocol stacks so it may be a boost for these generally small and medium sized companies if WiMAX is deployed by MTNL. The only problem with WiMAX is that there are hardly big global names with any WiMAX devices/equipment. As a reult the prices could be higher and the consumers may have less choice. 3G and LTE will help in this scenario. Qualcomm for example is already looking forward to getting a big chunck of the Indian market.
India has a very big pool of keen technologists and they will whole heartidly embrace mobile broadband and the variety of apps/mobiles but only when they know that there will be stability and reliability. Once the ball starts rolling then the snowball will turn into an avalanche. The question is not if, but when. Source: BlogSpot.com
Written on August 16th, 2009 by ADMINno shouts
Motorola launched its LTE drive tour in Sweden today, to demonstrate their Long Term Evolution technology to operators from across Scandinavia. During the drive tour, visitors will witness LTE’s mobile broadband performance on the move in an urban environment via an LTE-enabled van. The demonstration will include hand-over between sectors and a number of demanding, bandwidth hungry video applications – including live TV over LTE.
The LTE network, which includes two Motorola LTE eNodeBs running on commercial hardware, is operating at 2.6GHz. It was deployed and optimised in just 10 days, says Motorola. Inside the van, which also toured the streets of Barcelona at Mobile World Congress earlier this year, visitors will see Standard Definition (SD) and High Definition (HD) streaming video from a Motorola video-on-demand server, as well as voice over IP calls, web browsing, file downloads and other high bandwidth and low latency Internet-based applications. 
Swedish cellular operator TeliaSonera selected Ericsson to build the world’s first commercial LTE site in Stockholm. There are no paying customers on it, but it will be part of the Nordic carrier’s commercial LTE network in Sweden’s capital city. It is scheduled to go live in 2010. The Swedish carrier will also use LTE gear from Huawei Technologies. Huawei has been aggressive in LTE development. Ericsson is currently the largest LTE proponent. Ericsson expects 80% of mobile broadband services will be enabled by cellular by 2012, using HSPA and LTE technologies. Ericsson CEO Carl-Henric Svanberg said the bulk of mobile broadband deployments in the coming five years will be based on HSPA. But Huawei faces little competition in the market for LTE gear, opines Om Malik, with Nortel and Alcatel-Lucent in financial difficulty. Vodafone will use Huwaei gear in its LTE trials where Vodafone Germany and Huawei will test the performance of LTE in the 790-862MHz band using Huawei’ s end-to-end LTE solution. Huwaei opened a Long Term Evolution laboratory in Richardson, Texas. In June, Huawei launched what it proclaimed the world’s first commercial WiMax distributed base station (DBS) with four transmitters and four receivers (4T4Rs).
Motorola is actively involved in LTE trails with operators in North America, Europe and Asia, and earlier this year launched its LTE trial network and testing lab in Swindon, United Kingdom. Earlier this year, Motorola deployed a live 700MHz LTE demonstration network in Las Vegas, replicating their 2.6GHz live LTE experience in Barcelona. In addition to the collaborative trials with operators, Motorola is actively engaged with the TD-LTE trials initiated by China’s Ministry of Industry and Information Technology, as part of its efforts to develop a globally competitive TD-LTE industry.
Ericsson’s CEO believes LTE will always have a price advantage — through volume — reports Om Malik. Ericsson drew a comparison to India, where GSM-enabled handsets enjoy a price advantage over their CDMA counterparts. “It will be the same for LTE and WiMAX,” he said. “In the end it will be about the economies of scale.” The ITU says their IMT-Advanced specification will be the only “true” 4G system. It calls for 100 Mbit/s downloads and a 1 Gbit/s link for stationary or local area connections. The ITU has said two specifications, 802.16m (or WiMax 2) and LTE-Advanced, will be considered, and it’s also possible that the Chinese government will submit its own specification for consideration.
Meanwhile, Motorola’s WiMAX infrastructure was used by Clearwire in Portland, Atlanta and Las Vegas. The Atlanta area is served by more than 400 cell sites that utilize Motorola’s WAP 400 and WAP 450 Diversity Access Point products. The WAP 400 and WAP 450 utilize tower top power amplifiers linked by their fiber optic cable with the base control unit housed in a small outdoor cabinet situated at the bottom of the tower. Source: Dailywireless.org
Source: http://www.dailywireless.org
Written on August 6th, 2009 by ADMINno shouts
LTE is gaining pace as the days pass by and everyday we hear some sort of milestone achieved by some company towards the ultimate aim of LTE product. RRC is one of the main components of Layer in the LTE protocol stack just as it was in UMTS. Certainly LTE RRC looks simpler in terms of the no of states and off course the length of the RRC document. Below are some of the important changes in LTE RRC and its difference with the UMTS system.RRC State: In LTE there is only 2 RRC states i.e. RRC_IDLE and RRC_CONNECTED whereas in UMTS system RRC has a 5 state i.e. IDLE, CELL_FACH, CELL_DCH, CELL_PCH and URA_PCH. One of the reasons why we don’t have CELL_FACH and CELL_DCH state is because there is no concept of common and dedicated transport channel in LTE. In LTE the data transfer will be done through the defined shared transport channel. Therefore this will simplifies the RRC State machine handling and improves RRC performance. This will also simplify the RRM algorithm which decides RRC states.
Signalling Radio Bearers: In LTE there is only three SRB is defined i.e. SRB0, SRB1 and SRB2 whereas in UMTS system RRC has 4 SRBs i.e. SRB0, SRB1, SRB2 and SRB3 (optional).
SRB 0: In LTE SRB 0 use RLC TM entity over CCCH logical channel in DL whereas in UMTS system it SRB 0 is sent on RLC UM entity over CCCH logical channel in DL.
MAC entity: In LTE there is only one MAC entity which needs to configured whereas in UMTS system there is 4 different MAC entity based on different type of transport channel i.e MAC-d (DCH), MAC-c/sh (FACH, DSCH), MAC-hs (HS-DSCH) and MAC-e (E-DCH). In UMTS system the state machine which is handling MAC configuration is quite complex. During state transition from CELL_FACH to CELL_DCH or CELL_DCH to CELL_FACH lots of signalling was involved. In LTE, since there is only one MAC entity which is easier and simple to configure and thus have very simple State Machine.
Radio Bearer mapping: In LTE Radio bearer mapping would be much simpler than the UMTS system because of there is no common and transport channel defined in LTE.
In LTE there is no RRC connection mobility defined like cell update and URA update.
Domain Identity: In LTE, there is only one domain identity i.e. PS domain and which is implicit no need to specify anywhere in signalling unlike UMTS system which has CS domain and PS domain. Because of a single domain in LTE the signalling overhead and complexity in RRC design has been reduced.
System Broadcast Information: In LTE, MIB includes a limited number of most frequently transmitted parameters and SIB Type 1 containing the scheduling information that mainly indicates when the SI messages are transmitted where as in UMTS system, MIB includes the frequently transmitted parameters was well as scheduling information.
Channels: In LTE RRC there is no need to define the downlink transport channel configuration in the RRC Reconfiguration message as it uses only shared channel. This will reduce signalling message size effectively. All DL-SCH transport channel information is broadcasted in system information.
Power Consumption: The above point introduces another very critical feature of DRX calculation since all DL data is on the shared channel. E-NB can tell the UE when to decode/listen over the radio frame. This will optimize UE power consumption.
Paging Type: Since there is no CELL_FACH and CELL_DCH state in LTE there is only one type of paging required where as in UMTS system there is two type of paging defined.
Reconfiguration: In LTE there is only one reconfiguration message to reconfigure all logical, transport and physical channel where as in UMTS system there are number of reconfiguration message i.e. RB reconfiguration , TRCH configuration, PHY configuration. Thus there is less signalling message or overhead in LTE for the reconfiguration.
Reduced Latency: Since there is no RNC or NBAP protocol in LTE, this reduces the latency of the RRC connection establishment and RB management procedure.
Single UE identity: Since there is only one shared MAC entity, there is no need to define URNTI, ERNTI, HRNTI, SRNTI etc in LTE.
No Activation time: In LTE, there in no need to define activation time. Because of this there are lots of synchronizing complexity in 3G-RNC systems i.e. Synchronizing Radio link procedure based on activation time, synchronizing between the various MAC entity. This reduces significantly latency during establishment and reconfiguration of radio bearers.
RRC State: In LTE, there in no need to specify the RRC State in RRC message.
CQI Reporting: For network control mobility, there is one feature which become very important and critical i.e. CQI Reporting. As in LTE the CQI reporting should be fast and correct for taking decision for mobility.
Signalling connection release: There is no signalling connection release procedure in LTE, since there is only one domain i.e. PS domain. Also the UE context is shared between the MME and ENB and if UE is active in ENB then it should be active in MME also.Source: http://3g4g.blogspot.com/2009/08/simplicity-of-lte-and-its-differences.html
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Written on August 3rd, 2009 by ADMINno shouts
On the Road to 4G While the top-of-the-line smartphones of today rely on third-generation wireless networks, carriers are looking ahead to 4G networks, which will facilitate even faster data transfers to and from wireless devices. WiMax and LTE are two of the more talked-about technologies, but their development paths are vary and they may end up doing different jobs. Though most major U.S. wireless carriers today tout the ubiquity of their third-generation, or 3G, wireless networks, they are simultaneously planning for the future, pushing the development of fourth-generation (4G) networks that they hope we’ll all be using in a matter of years. Two of the best-known 4G technologies now on the horizon are WiMax, or Worldwide Interoperability for Microwave Access; and LTE, or Long Term Evolution. However, these two different technologies will likely take different paths in their development and eventually be used for different applications. Source: http://www.xscx.info/2009/07/on-road-to-4g.html
Written on August 3rd, 2009 by ADMINno shouts
Ease of WiMAX Migration to 4G Technology: Myth or Reality?: For those accustomed to a wireless interface, WiMAX (News – Alert) has long been the technology providing wireless transmission of data through a variety of transmission modes. Now, as the world of telecommunications is swiftly moving toward Long Term Evolution (LTE (News – Alert)) to adopt 4G mobile communications technology, a perceived battle between WiMAX and LTE could easily emerge. Source: http://4g-wirelessevolution.tmcnet.com/wimax/topics/wimax/articles/59185-ease-wimax-migration-4g-technology-myth-reality.htm
Written on August 3rd, 2009 by ADMINno shouts
So far we came across the term 3G, because it is the latest wireless technology that is in use today in many parts of US as well in many other developed nations. The many analysis going on regarding 3G and its advancement of 4G and 5G between the group of scientists in IEEE communication society. The basic idea behind this 3G is to augment good old TDM voice with broadband data. So far the international association of wireless telecommunication industry CTIA estimates that only 80% of the penetration is possible as the data need to be the engine of growth if voice market saturated. But 4G will provide both voice and data together under IP umbrella hence extension around wireline to wireless is possible with IP. If we are potentially talking about the 5G, we can have the maximum throughput of 100 Mbps or more; but in case of 4G, we can look up to 300Mbps without loss as LTE is going to be the 4G technology of choice. ource: http://www.dhinawandreaming.com/2009/05/bright-future-of-4g.html
Written on August 3rd, 2009 by ADMINno shouts
Verizon Wireless (NYSE:VZ, NYSE:VOD) is jumping into long-term evolution (LTE), launching its first networks this year, while AT&T (NYSE:T) is taking a little more time, planning its rollout in 2011 and upgrading its 3G network in the interim. In Japan, there’s a similar story. NTT DoCoMo (NYSE:DCM) is as gungho over LTE as is Verizon, but Softbank Mobile appears to be in no hurry. Source: http://telephonyonline.com/wireless/news/3g4g-mobile-broadband-economics-0630/
Written on August 3rd, 2009 by ADMINno shouts
Embattled Canadian vendor Nortel may have held on to some of its key LTE patents when it flogged much of its mobile business to Nokia Siemens Networks last month, but there is some debate as to whether that IPR will be the nice little earner Nortel hopes.Source
http://www.telecoms.com/12468/nortel-4g-patents-may-not-be-worth-that-much
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