LTE Objective-Taget 2008 (from Journal informtion)
April 15, 2008
LTE - Long-Term Evolution of the 3GPP Radio Technology
3GPP is developing the evolution of mobile communications systems beyond GSM/EDGE and WCDMA-HSPA systems. “3G Mobile System Long Term Evolution (LTE)”, targets capacity and data rate enhancements to support new services and features requiring higher levels of capability and performance. Data rates will be significantly higher for downlink and
uplink paths, with the necessary network architecture
and technology enhancements. The new system
includes support of a full IP-based network and
harmonization with other radio access technologies.
LTE Terrestrial Radio Access Network technology
specifications are now approved and under change
control, leading to inclusion in the forthcoming 3GPP Release 8. Specifications for the system architecture
will be completed in 2008.
High-level requirements
? Reduced cost per bit
? Increased service provisioning – more services at lower cost with better user experience
? Flexibility of use of existing/new frequency bands
? Simplified architecture, open interfaces
? Allow for reasonable terminal power consumption
LTE utilizes a new state-of-the-art radio air interface
technology known as Orthogonal Frequency Division
Multiple Access (OFDMA) to provide several key
benefits, including significantly increased peak data
rates, increased cell edge performance, reduced
latency, scalable bandwidth, co-existence with
GSM/EDGE/UMTS systems, & reduced CAPEX/OPEX.
Basic drivers for LTE
? Demand for higher data rates
? New spectrum allocations (e.g. 2.6 GHz)
? Greater flexibility in frequency allocations
? Continued cost reduction; future competitiveness LTE Objectives ? Significantly increased peak data rates ? Increased cell edge bit rates ? Improved spectrum efficiency; scaleable bandwidth ? Improved latency; reduced CAPEX and OPEX ? Acceptable system/terminal complexity, cost, power
consumption
? Compatibility with earlier releases & other systems
? Optimized for low , but supporting high mobile speed
Targets include:
? Instantaneous downlink peak data rate of 100 Mb/s within 20 MHz downlink allocation (5 bps/Hz)
? Instantaneous uplink peak data rate of 50 Mb/s (2.5 bps/Hz) within a 20MHz uplink spectrum allocation) ? Downlink: average user throughput per MHz, 3 to 4
times Release 6 HSDPA
? Uplink: average user throughput per MHz, 2-3 times
Release 6 Enhanced Uplink
? E-UTRAN optimized for low mobile speed: 0-15
km/h. Higher mobile speed between 15-120 km/h
should be supported with high performance
? Mobility across the cellular network shall be
maintained at speeds 120 km/h-350 km/h (or even up to 500 km/h depending on the frequency band) ? Spectrum flexibility: E-UTRA scalable to operate in 1.25, 1.6, 2.5, 5, 10, 15 and 20 MHz allocations: Uplink and downlink…paired and unpaired ? Co-existence with GERAN/3G on adjacent
channels; with other operators on adjacent channels; overlapping or adjacent spectrum at
country borders; handover with UTRAN & GERAN
System Architecture Evolution (SAE)
3GPP is also working on System Architecture Evolution
(SAE) to ensure competitiveness of its systems for the
next 10 years and beyond, with aims including:
? Improvements in latency, capacity, throughput
? Simplification of the core network, and optimization
for IP traffic and services, and expected growth
? Simplified support & handover to non-3GPP access
technologies LTE radio network products will incorporate several
features that simplify building and management of next-generation networks. Features such as plug-and-play,
self-configuration and self-optimization will simplify and
reduce the cost of network rollout and management. LTE will be deployed in parallel with simplified, IP-based core and transport networks that are easier to build, maintain and introduce services on. Regarding LTE user devices, as well as mobile phones, many computer and consumer electronic devices,
including notebooks, ultra-mobile PCs, gaming devices
April 15, 2008
and cameras, will incorporate LTE connectivity using embedded modules
Qualcomm has announced a new family of multi-mode LTE device chipsets scheduled to sample in Q2 09:
? MDM9200? to support UMTS, HSPA+ and LTE
? MDM9800? to support EV-DO Rev. B, UMB and LTE
MDM9600? to support UMTS, HSPA+, EV-DO Rev. B, UMB and LTE
LTE deployments
The mobile industry is consolidating around the LTE standard. LTE is now in the trial phase and commercial LTE deployments anticipated from 2009-2010.
Verizon Wireless, Vodafone, and China Mobile have announced plans for joint trial activities of LTE in 2008, which will focus on frequency-division duplex (FDD) and time-division duplex (TDD) modes. Verizon Wireless acquired almost half of the spectrum in the FCC’s recent auction of 700 MHz and has stated it plans to use the spectrum to launch its LTE service. LTE infrastructure deployment will get underway in 2H 2009 for the planned service launch in 2010.
AT&T Mobility was the 2nd largest winner of 700 MHz spectrum and has confirmed plans to deploy LTE across this spectrum, plus spectrum acquired in the 2006 advanced wireless services (AWS) auction, and the 700 MHz spectrum the company acquired in 2007 from Aloha Partners. The company says it has a contiguous band of 20 MHz for LTE transition across 82% of the population in the top 100 markets.
NTT DoCoMo has embarked on rollout. Telstra recently confirmed that LTE is on their roadmap. Commitments to LTE by more operators are expected, and will be included in future updates of this paper.
IPR Framework for LTE/SAE Agreement
On April 14, 2008 Alcatel-Lucent, Ericsson, NEC, NextWave Wireless, Nokia, Nokia Siemens Networks and Sony Ericsson announced a mutual commitment to a framework for establishing predictable and more transparent maximum aggregate costs for licensing intellectual property rights (IPR) that relate to 3GPP Long Term Evolution and Service Architecture Evolution LTE/SAE standards. The framework is based on the prevalent industry principle of fair, reasonable and non-discriminatory (FRAND) licensing terms for essential patents. It means that the companies agree, subject to reciprocity, to reasonable, maximum aggregate royalty rates based on the value added by the technology in the end product and to flexible licensing arrangements according to the licensors' proportional share of all standard essential IPR for the relevant product category. The companies support that a reasonable maximum aggregate royalty level for LTE essential IPR in handsets is a single-digit percentage of the sales price. For notebooks with embedded LTE capabilities, the companies support a single-digit dollar amount as the maximum aggregate royalty level. The parties believe the market will drive the LTE licensing regime to be in accordance with these principles and aggregate royalty levels. Source press releases (April 14, 2008): https://www.360docs.net/doc/308143655.html,/A4136001?newsid=1209094 https://www.360docs.net/doc/308143655.html,/ericsson/press/releases/20080 414-1209031.shtml
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LTE/SAE Trials
Leading vendors and operators joined forces in May 2007 under the LTE/SAE Trial Initiative to demonstrate the potential of LTE/SAE through joint tests, including radio transmission performance, interoperability, field tests and full customer trials. Results are used in technology developments and standardisation, and help define/validate operator network launch plans. It will also help to validate the emerging LTE ecosystem, including devices and applications. Membership of the initiative is expanding. Joint testing and reporting of ongoing results will continue to end 2009, aligning with accepted timescales for first LTE system deployments. First LTE call made
The world's first demonstration of an end-to-end phone call enabled by LTE/SAE, employing handheld mobiles, was made at the Mobile World Congress in February 2008, Barcelona. All the leading vendors presented infrastructure solutions at the Congress.
LTE–HSPA handover has been demonstrated. A recent multi-user field trial in an urban environment delivered 173 Mbps peak speeds using LTE in the 2.6 GHz band. Further evolution of LTE
3GPP recently announced plans are agreed for further evolution of LTE so that it can be considered within the ITU’s recent call for “IMT-Advanced” technologies. The requirements for “LTE-Advanced” will be contained in a new Technical Report to be issued by 3GPP. More information: https://www.360docs.net/doc/308143655.html,/news/2008_04_LTE_A.htm
GSA is a Market Representation Partner in 3GPP
(https://www.360docs.net/doc/308143655.html,)