Articles
White Paper: WWAN Technology And Market Trends
By Psion Teklogix
Technology development status: mainly finalized, some vendors / carriers continue to do enhancements. The enhancements revolve around introduction of dual carrier with down/uplink maximum speed of 592 Kbps / 237 Kbps. Another enhancement is called EDGE-2 that supports up to 1.2 Mbps / 474 Kbps in down/up link direction. Example of a vendor who promotes this enhancement is Ericsson. At this time, there is no confirmation though about any carrier plan to implement these enhancements.
Market trends: Operators understand the need to ensure the best user experience for their customers. Most 3G/WCDMA mobile network operators rely on GSM/EDGE for service continuity (e.g. rural areas, urban in-building). This strategy ensures users receive a good experience of most 3G services; EDGE-delivered data services create a broadband-like experience, with lower CAPEX and OPEX for the operator. More than 35% of WCDMA devices launched also support EDGE. As virtually all WCDMA operators evolve to HSPA, the complementary fit of EDGE is evident; 118 of 198 commercial HSDPA networks (60.2%) also launched EDGE (GSA survey: May 18, 2008). The end-user performance with EDGE is good enough to make all existing services more attractive, e.g. e-mail, web browsing, music downloads, mobile TV. As HSPA network deployments expand globally and data speeds increase, HSPA is a key driver for EDGE Evolution.
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