3GPP RAN WG4 has begun investigating possible UE RF architectures to enable four LTE-Advanced resource aggregation scenarios for ITU-R submission purposes.
Initial analysis has focused on UE complexity and power consumption for the resource aggregation scenarios.
RAN WG4 has initially concluded that it would be beneficial for LTE-A feasibility study purposes to consider various device categories in order to enable a sufficient number of different UE categories in LTE-Advanced. One set of device categories presented by RAN WG4 is listed in the figure below.
RAN WG 4 noted in particular that it envisions the need for an absolutely lowest cost terminal. This is reflected in Category A above, which represents even a simpler UE category than 3GPP Release 8 currently allows.
Further Reading: Study of UE architectures for LTE-A deployment Scenarios, Third Generation Partnership Project, R4-091204 (March 2009), document available for download at http://ftp.3gpp.org/tsg_ran/WG4_Radio/TSGR4_50bis/Documents/
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