All Roads Lead to LTE

The Mobile Broadband Future: HSPA+ and LTE
An educational feature brought to you by 3G Americas an...
All Roads Lead to LTE

operators have announced trials beginning               Bridge to the Future                       ...
All Roads Lead to LTE

that the worldwide embrace of HSPA+ will                          benefits in terms of how it is de...
3GPP Release 8 HSPA+ and LTE
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The Mobile Broadband Future: HSPA and LTE


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The Mobile Broadband Future: HSPA and LTE

  1. 1. All Roads Lead to LTE The Mobile Broadband Future: HSPA+ and LTE An educational feature brought to you by 3G Americas and Wireless Week Mobile Data – Promises Delivered Informa Telecoms & Media. their access and core networks, the choice The mobile industry has been talking In 2008, there were almost 162 million they make also impacts the simultaneous for many years about the day when smartphones sold, surpassing notebook evolution of the entire wireless ecosystem the promise of substantial mobile data sales for the first time, according to Informa including devices, applications and services. revenues would actually become a reality. Telecoms & Media. Informa forecasts sales For many years now a true world Much to everyone’s delight, that day has of new smartphones in 2009 will grow cellular standard has been one of the finally arrived. more than 30% to 211.2 million units, industry’s goals. GSM dominated the Just look around in any public setting driven by innovative new devices and second generation (2G) technologies but and you’ll see people texting, doing operator subsidies designed to promote there was still fragmentation with CDMA their email, surfing the web and even mobile data consumption, so that by 2013 and TDMA as well as iDEN. With the downloading music on their wireless almost four in every ten handsets sold move to third generation (3G), nearly all worldwide will be a TDMA operators migrated to the GSM smartphone. technology path. Yet the historical divide Data Traffic Increase 15 Source: Ericsson, Petter Blomberg, PCCA Presentation, March 2009 While voice will between GSM and CDMA remained. Relative Network Load always be important, It is with the next step of technology 13 mobile data is taking evolution that the opportunity has arisen 11 the driver’s seat as for a global standard technology. Many 9 mobile operators mobile operators have converged on the Packet Data develop their near- technology they believe will offer them 7 Data traffic has increased and long-term and their customers the most benefits. 5 15x over voice technology strategies. That technology is Voice traffic 3 To meet and exceed Long Term Evolution their subscribers’ (LTE). For the first 1 01/07 03/07 05/07 07/07 09/07 11/07 01/08 03/08 05/08 07/08 09/08 11/08 expectations and time in the world, requirements, mobile a future technology Dates operators must offer standard has spanned Operator Assessment of Growth in Data new, innovative mobile the U.S., Asia and Demand on a Relative Basis data applications. They Europe with commitments from leading also must support a operators on their planned deployment of devices. And if anecdotal evidence isn’t seamless experience that provides end- LTE and a global consensus that LTE will good enough, then the real proof is in the users with the access and ability to use the become the dominant technology for the numbers. While voice still accounts for data-centric applications they use at home, next generation of mobile broadband. the majority of cellular traffic, in the U.S. in the office or on the go anywhere in the In June of 2008, the Next Generation for the first time since 1998, voice average world. Mobile Networks Alliance (NGMN) revenue per user (ARPU) dipped below selected LTE as the first technology that $40, and overall ARPU from data reached Evolution to LTE matched its requirements successfully. The almost 25% in 2008 and is likely to The road to the mobile broadband future GSMA, UMTS Forum, 3G Americas and exceed 30% by the end of 2009, according has several paths and each mobile operator other global organizations have reiterated to Chetan Sharma Consulting. Sharma will have different timetables and reasons for their support of the 3GPP evolution to reports that U.S. wireless data service taking one path over another. But seemingly LTE. Additionally, the LTE/SAE Trial revenues grew 38.7% in the fourth quarter all agree on the ultimate goal – an efficient Initiative (LSTI) has provided support of 2008 compared to the fourth quarter all-IP wireless network capable of supporting through early co-development and testing of 2007. Additionally, global mobile data voice, video and data services. Choosing the of the entire ecosystem from chipset, revenues showed a 47.2% year-to-year air interface best suited to meet the needs of device and infrastructure vendors. LTE increase worth a total of $200 billion tomorrow’s IP-based services is the key to is in the early stages of its evolution, between 2007 and 2008, according to reaching that goal. In addition to impacting but several of the world’s largest mobile This advertising section was paid for by 3G Americas
  2. 2. All Roads Lead to LTE operators have announced trials beginning Bridge to the Future networks, HSPA+ provides mobile operators in 2009 and initial deployments as early as Because the evolution to LTE will take with significant increases in technology 2010 and 2011. The future for LTE and its years, mobile operators able to do so will network performance as well as reduced already impressive ecosystem is evidence continue to upgrade their existing 2G/3G latency on their way to LTE. This is a of a well-defined standard and there networks to constantly improve the mobile tremendous advantage of HSPA operators are already more than 100 operators broadband experience for their customers. that is not an option for CDMA operators worldwide who have plans for LTE in With 3.6 billion subscriptions for an who are already unable to compete with their future. 89% share of the global market, and 750 the higher data throughput performance “Because of practical benefits and networks in 219 countries worldwide, the of HSPA and have no future evolution deployment momentum, the migration GSM-HSPA family of technologies will commercially viable for enhancement to path from EDGE to HSPA then to LTE is serve the overwhelming majority of mobile their EV-DO networks today. inevitable. Benefits include the ability to customers for the next ten years even as Because it offers such impressive roam globally, huge economies of scale, LTE is commercially deployed. performance at an incremental cost, widespread acceptance by operators, “We have a great story. We’re not the some UMTS-HSPA operators plan to complementary services such as messaging best because we’re bigger, we’re bigger use HSPA+ as a bridge to LTE. Telstra and multimedia and an astonishing variety because we are the best,” says Chris launched the world’s first commercial of competitive handsets and HSPA+ network in February other devices,” according to of 2009. In the U.S., both Global 3G+ Subscribers Forecast by Technology Family a Rysavy Research EDGE, AT&T and T-Mobile USA Over 2 Billion 3G+ Subscribers by 2013 HSPA and LTE Broadband have committed to evolving Innovation report. 311 Million Subscribers their UMTS-HSPA networks While LTE is off to 3GPP to HSPA+ to continue UMTS 3GPP2 a great start, it will not HSDPA-HSUPA EV-DO increasing performance. HSPA+ EV-DO rev. be deployed worldwide LTE A/B AT&T announced they will TD-SCDMA overnight. It will take until 80% begin trials of HSPA+ this at least 2015 for a large year. Analysts anticipate 1.6 Billion Subscribers percentage of subscribers commercial service to begin in to begin connecting to LTE the United States in 2010. networks, according to the WiMAX “HSPA+ is going to be an Fixed & Rysavy report. It will take Mobile exciting opportunity for us and 802.16-2004 even longer for LTE networks 802.16e-2005 our customers,” says Neville to supplant existing GSM/ Ray, Senior Vice President of Source: Informa Telecoms & Media, March 2009 103 Million Subscribers UMTS/HSPA and CDMA Engineering and Operations 2000 networks. This means for T-Mobile USA, which that many different kinds Global Mobile Broadband Subscription Forecast 2013 deployed its 3G network to of networks will coexist more than 130 cities in 2008. together for most of the decade to come. Pearson, President of 3G Americas. “And Ray points out that the wireless industry is “Virtually all of the traditional that goes for the entire evolution of our already heavily committed to HSPA. And wireless industry is converging on 3GPP technology family.” with a thriving ecosystem in place, HSPA one air interface [LTE], but everyone With 85% of the global 3G mobile can evolve to HSPA+ to deliver compelling is coming at it from different legacy broadband market today and more than data speeds that meet the advanced wireless technologies,” says Michael Thelander, 1100 devices commercially announced by needs of customers. CEO and founder of Signals Research 132 suppliers supporting a broad portfolio Initial deployments of HSPA+ can Group. “Some operators may begin of mobile data services, it’s clear that UMTS- deliver peak theoretical downlink turning off their 2G networks in the HSPA will have a significant impact on the throughput rates of 21 Mbps, and coming decade but it will be well more evolution of mobile broadband in both the this speed will be doubled by later than a decade before 2G networks no near-term and for the foreseeable future. HSPA+ technology enhancements, longer exist in at least some markets and Because of its many benefits, many providing a comfortable bridge to future I will be long retired from the industry UMTS-HSPA operators will choose to technologies. before the same can be said for today’s deploy HSPA+. An affordable, simple and Kris Rinne, Senior Vice President, 3G technologies.” incremental upgrade to existing HSPA Architecture and Planning for AT&T, agrees
  3. 3. All Roads Lead to LTE that the worldwide embrace of HSPA+ will benefits in terms of how it is designed to converge with the 3GPP world, selecting mean that carriers, infrastructure providers operate across the broad radius of the cell LTE over other radio access methods as and device manufacturers will be able to site itself,” says Rinne. “The technology’s they are nearing the end of their existing take advantage of a huge ecosystem that high spectral efficiency, combined with the technology roadmap. In China, the future offers advantages to both service providers flatter architecture of the network means evolution for TD-SCDMA is a smooth and end users. that operational expenses will be reduced convergent path to TD-LTE. Additionally, “The advantages of being on the path for carriers. LTE can also be used on a wide WiMAX operators may begin to consider we are on include the global scale and range of different spectrum, making it ideal LTE as the LTE TDD and FDD ecosystem international roaming that we can offer for carriers throughout the globe.” is developed and Clearwire has publicly our customers due to the GSM technology LTE will be a data-centric technology stated their intention to evaluate LTE for family,” says Rinne. for years to come, but it is the technology future deployments while Sprint is rumored AT&T, which has experienced 50% that mobile operators will use to begin to be considering LTE. data revenue growth year-to-year for the supporting VoIP, says Thelander. Until then, past three years, began the first widescale LTE handsets will be dual-, or even tri- Next Level deployment worldwide of the initial HSPA mode. “But because LTE is designed to be HSPA+ and LTE will likely seamlessly technology in its 850 and 1900 MHz backwards compatible with GSM/UMTS/ coexist for many years to come, but mobile networks in 2005. Since then, operators that reach capacity both AT&T’s HSPA network 2008 2009 2010 2011 2012 2013 limits with existing technologies and the HSPA ecosystem have EDGE Evolved EDGE will want to take their networks EDGE DL: 474 kpbs DL: 1.89 Mbps matured – AT&T has the fastest UL: 474 kpbs UL: 947 kbps to the next level of efficiency nationwide mobile broadband HSPA Rel 7 HSPA + Rel 8 HSPA + that uses the OFDMA radio HSPA DL: 14.4 Mbps DL: 28 Mbps DL: 42 Mbps UL: 5.76 Mbps UL: 11.5 Mbps UL: 11.5 Mbps network in the U.S. and HSPA in 5 MHz in 5 MHz in 5 MHz access technology. Deployment offers a robust portfolio of LTE DL: 326 Mbps LTE LTE Advanced of LTE enables mobile operators LTE UL: 88 Mbps (Rel 9) (Rel 10) handsets and services available in 20 MHz to operate their networks across today, she adds. EV-DO Rev A EV-DO Rev B 1.4 to 20 MHz of spectrum CDMA 2000 DL: 3.1 Mbps DL: 14.7 Mbps “The beauty of the GSM UL: 1.8 Mbps UL: 4.9 Mbps and grow their networks even in 1.25 MHz in 5 MHz family of technologies built on UMB further and more efficiently UMB has no commercial opportunities due to DL: 280 Mbps the 3GPP technical specification on top of an all-IP backbone. UMB lack of operator and vendor support, although UL: 68 Mbps UMB Rel 2 the standard does exist. in 20 MHz is that devices for future Ultimately, LTE will provide Mobile WiMAX Fixed WiMAX technologies can ‘fall back’ on Fixed WiMAX them with even more efficiency existing global GSM family by enabling them to move their Wave 2 technologies services,” explains DL: 46 Mbps Rel 1.5 IEEEE voice traffic onto VoIP. UL: 4 Mbps 802.16m Pearson. “New deployments 10 MHz 3:1 TDD Because operators require of LTE, for example, will Notes: Throughput rates are peak theoretical network rates. Ratio channel bandwidths indicated. Dates refer to expected initial commercial network deployment except 2008, which shows available technologies that year. No operator commitment for UMB. different solutions to meet the allow roaming on GSM-HSPA needs of their customers, the networks worldwide. This Mobile Broadband Technology Capabilities pace and progress of the LTE global GSM-HSPA coverage is Source: EDGE, HSPA & LTE, Mobile Broadband Innovation, evolution will depend on the Rysavy Research September 2008 something that other new mobile market they serve, the tools broadband technologies will never have the HSPA, mobile operators such as AT&T can that they have in their arsenal as well as ability to achieve even over the course of deploy the new technology as aggressively where they are in terms of penetration and many years.” as they wish and continue to provide their growth of their networks and the associated Recent spectrum auctions in the United customers with a seamless, full-featured demands that entails. States have laid the groundwork for experience wherever they go,” Rinne adds. “The GSM to LTE family of deployment of LTE. For example, AT&T Many mobile operators with the current technologies gives a lot of different tools will use LTE to build out the 700 MHz EV-DO technology will likely deploy LTE and capabilities to mobile operators, and (1700-2100) AWS spectrum it won because upgrades to their technologies regardless of their spectrum demands or at auction, according to Rinne. AT&T such as Ultra Mobile Broadband are not where they are in that growth curve,” says announced its support of LTE in 2008 and commercially viable or available. In fact, Rinne. “And it enables their customers to has trials of LTE in 2010 with potential leading CDMA operators worldwide enjoy the benefits of global roaming and a commercial launch of LTE in mid 2011. including Verizon, KDDI, KTF and SKT rich ecosystem of services and devices from “LTE provides us with some incremental are among those confirming that they will which to choose.”
  4. 4. 3GPP Release 8 HSPA+ and LTE About 3G Americas The 3GPP roadmap from HSPA to for deployment in 2010 HSPA+ and then to LTE has been • LTE, a high-data rate, low latency well defined in standards develop- radio-access technology, is the next ment work with the final closing of evolution beyond HSPA and will uti- Release 8 in March 2009. Some of lize Orthogonal Frequency Division the key features of HSPA+ and LTE Multiple Access (OFDMA) technology include the following: • LTE with MIMO and in larger spec- • HSPA+ is a simple upgrade to HSPA trum bandwidths will allow operators networks today, protect- to achieve peak theoretical 3G Americas is an industry ing an operator’s invest- throughput rates of up to association with a mission to ment in the network 326 Mbps in the downlink promote, facilitate and advocate • HSPA+ provides a and 86 Mbps in the uplink for the deployment of the GSM strategic performance in 20 MHz and with 4X4 family of technologies including roadmap advantage for MIMO, according to 3GPP LTE throughout the Americas. incumbent GSM-HSPA • LTE features include: 3G Americas has contributed to operators providing • scalability to operate the successful commercial rollout OFDMA-equivalent per- in spectrum as narrow of GSM across the Americas formance in 5X5 MHz as 1.4 MHz or as wide and its place as the number one spectrum allocations as 20 MHz technology in the region, as well with only incremental • flexibility to operate in as the global adoption of EDGE. investment both TDD and FDD modes The organization aims to develop • HSPA+ will significantly • reduced latency needed the expansive wireless ecosystem increase HSPA capacity as well as to support sophisticated voice of networks, devices, and appli- reduce latency below 50 msec and data applications cations enabled by GSM and • The first phase of HSPA+ with • 10 msec round trip between user its evolution to LTE. Members: 64QAM is already being deployed equipment and the base station, and Alcatel-Lucent, AT&T, Cable by some operators providing a peak less than 100 msec transition time & Wireless, Ericsson, Gemalto, theoretical downlink throughput from inactive to active. HP, Huawei, Motorola, Nokia rate of 21.6 Mbps Siemens Networks, Nortel, • HSPA+ with 64 QAM and advanced For more information: Openwave, RIM, Rogers, T- antenna techniques such as 2X2 The Mobile Broadband Evolution: 3GPP Mobile USA, Telcel, Telefonica Multiple Input Multiple Output Release 8 and Beyond - HSPA+, LTE/SAE and Texas Instruments. (MIMO) can deliver 42 Mbps theoreti- and LTE-Advanced and EDGE, HSPA cal capability on the downlink and 11.5 and LTE – Mobile Broadband Innovation Mbps on the uplink and could be ready white papers, Core & Service Evolution As mobile operators add HSPA+ and LTE to their radio access networks, they will simultaneously evolve the rest of their network and subscriber devices. They will beef up their core and back- haul networks to handle the exponential increas- es in IP traffic enabled by HSPA+ and LTE. To keep their networks performing optimally, mobile operators will flatten their core network archi- tectures considerably using Evolved Packet Core (EPC) technology. EPC reduces the number of nodes in the core, which reduces latency even as the amount of data traffic increases. It simplifies deployment of IP-based networks and reduces the cost of their deployment.