Through constant innovation and improvement, Universal Mobile Telecommunications System (UMTS) with High Speed Packet Access (HSPA) technology has established itself as the global mobile broadband solution.
The following are some of the important observations and conclusions of this paper:
•The wireless industry is addressing exploding data demand through a combination of spectrally more efficient technology, denser deployments, small cells, HetNets, self-configuration, self-optimization and offload.
•Initial LTE deployments occurred more quickly than any new wireless technology previously deployed; LTE has become the global cellular technology platform of choice for both GSM-UMTS and Code Division Multiple Access (CDMA) / Evolved Data Optimized (EV-DO) operators while Worldwide Interoperability for Microwave Access (WiMAX) operators are adopting LTE-Time Division Duplex (LTE-TDD).
•The wireless technology roadmap now extends through IMT-Advanced, with LTE-Advanced defined to meet IMT-Advanced requirements; LTE-Advanced is capable of peak theoretical throughput rates that exceed 1 gigabit per second (Gbps). Operators began deploying LTE-Advanced in 2013. Key capabilities include carrier aggregation, more advanced smart antennas and better HetNet support.
•HSPA+ provides a strategic performance roadmap advantage for incumbent GSM-HSPA operators. Features such as multi-carrier operation, Multiple Input Multiple Output (MIMO) and higher-order modulation offer operators numerous options for upgrading their networks, with many of these features (including multi-carrier and higher-order modulation) becoming available as network software upgrades. With all planned features implemented, HSPA+ peak rates will eventually reach a top theoretical speed of 336 Mbps on the downlink and 69 Mbps on the uplink.
•Despite the industry's best efforts to deploy the most efficient technologies possible, overwhelming demand is already leading to isolated instances of congestion which will become widespread unless more spectrum becomes available in the near future.
•Wi-Fi is playing an ever more important role as a means to increase data capacity. Innovations include tighter coupling to mobile broadband networks, automatic authentication and network selection and more secure communications.
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