4/7/2011 LTE Advanced Key Messages Qualcomm is a leader in 3G and 4G Qualcomm is a leader in 3G and 4G and committed to the continued evolution of 3G as well as the evolution of LTE, LTE Advanced (3GPP R10) and beyond. LTE (R8) launched in 2010: LTE boosts data capacity in high demand areas o LTE complements 3G, whic h provides ubiquitous data coverage as well as voic e support. o Multimode LTE/3G devices provide seamless handover with 3G from day one and ensure global roaming in global 3G bands. LTE leverages new, wider contiguous spectrum—10 MHz and beyond—and TDD spectrum o LTE TDD is the global solution for unpaired spectrum. It is experiencing strong traction India and China with commercial launches in 2011. o LTE FDD is available in bandwidths below 10 MHz but o ffers limited performance differentiation compared to evolved 3G. Qualcomm provides the industry’ s first LTE/3G multimode chipsets o Common FDD and TDD chips et platform o Supports all major 3G flavors and their latest evolutions LTE Advanced realizes full benefits of Heterogeneous Networks The next significant performanc e leap will come from bringing the net work closer to the user by adding small cells—such as picocells. A net work with a mix of macro cells and small cells is also referred to as a heterogeneous net work or simply HetNet. Simply adding small cells increases capacity, but LTE Advanced realizes the full benefit of het erogeneous networks by applying adaptive interference management to further increase performance. LTE: Significantly increase s network capacity—through better utilization of small cells o Results in better offload of the mac ro network o Better utilization of small cells even if they cannot be placed at an optimal location Ensure s user fairness both within and between nodes o Adding new nodes creat es new cell edges and some users may get reduced performance—advanced interference management ensure user fairness Enhance s the user experience o Especially by providing higher cell edge and median user data rates To achieve these benefits, the LTE network requires only software upgrades to support advanced interference management—in connection with new advanced receiver devic es The main benefit of advanced interference management is range expansion which effectively increases the utilization of the small cell to increase overall network capacity (expanding the range of the small cell) Note: Adaptive interference management techniques includes interference cancellation based advanced receiver devices (cancels overhead channels), enhanced time-domain adaptive resource partitioning w ith enhanced RRM, and RLM. These three features together enable range expansion of small cells that effectively increases the utilization of the small cell to provide higher overall network capacity. 4/7/2011 LTE Advanced brings different dimensions of improvements—the most gain from HetNets The radio link is improvement is slowing down: So how do we get more capacity? You can add more spectrum, but spectrum is a limited resource, so we need focus on improving performance within the available spectrum: So how do we get more capacity? You can add more spectrum, but spectrum is a limited resource. So the solution is in foc using on improving performance within the available spectrum. Consider that: o Aggregation of available spectrum primarily increases (peak and user) data rates. o Leveraging more antennas and more radio links (such as higher order MIMO) increases capacity (spectral efficiency)—but there are typically practical limitations on using more antennas. o Bringing the network closer to the user—adding small cells in available spectrum —can bring the next leap in performance. A new dimension of improvement: spectral efficiency per coverage area. LTE Advanced leverages all spectrum resources LTE Advanced can aggregat e up to five carriers to further enhanc e the broadband experience. Wider bandwidth is important to all wireless operators to enhanc e the user experience and create a fatter data pipe—peak and us er data rates scale with the bandwidth all the way to the cell edge. Carrier Aggregation (Multicarrier) is also a key feature for EV-DO Rev. B and HSPA+ to enhance performance in the 5-20 MHz spectrum bands. LTE Advanced carrier aggregation enables an operator to leverage all its spectrum assets: Aggregation of spectrum within a spectrum band to create a fatter data pipe; for example, aggregating t wo separat e 10 MHz FDD chunks within the 2. 6 GHz band Aggregation of across spectrum bands to create a fatter data pipe; for example, aggregating a high band (like 2.6 GHz) and a low band (like 700 MHz in the US and Digital Dividend in Europe) Aggregation of more downlink capacity—supplemental downlink for unpaired spectrum aggregated with paired spectrum (FDD) o An example of an unpaired spectrum opportunity is in the 700M Hz band in the US, in addition to paired (FDD) spectrum available in this band o There is also up to 40 MHz of spectrum available in the L-Band with harmonization possible in Europe and beyond Qualcomm: LTE Advanced leadership Qualcomm’s over-the-air prototype test bed in San Diego evaluates features to realize full benefits of heterogeneous networks and to speed up the design of LTE Advanced. Qualcomm continues its LTE standardization leaders hip. A main contributor to key LTE Advanced features such as carrier aggregation, self-organizing networks, relays, and waveform enhancements. Major contributor for ITU IMT-Advanc ed submissions and the first company to show results satisfying IMT-Advanced requirements for realistic assumptions. LTE Advanced is now approved as an IMT-Advanced technology (Nov. 2010).
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