3GPP’s LTE-Advanced is one of candidates for ITU-R's (International Telecommunication Union – Radio Communication) 4G mobile communication (IMT-Advanced) standards. The IMT-Advanced standards establishment is scheduled to be early 2011 through the expert evaluation process.
To find the key IPR holders for the LTE-Advanced, a keyword search of the global patent data bases (USPTO, EPO, and WIPO (PCT)) has been performed.
As of March 29 2010, the key IPR holders and their IPR share for the LTE-Advanced (total of 260 patent applications) are as follows:
1. Patent Landscape by Assignee's Country
USA (133, 55%), S. Korea (37, 15%), Finland (20, 8%), Sweden (16, 7%), Canada (7, 3%), and China (7, 3%)
2. Patent Landscape by Assignee
Qualcomm (101, 48%), LG (33, 16%), Ericsson (17, 8%), NSN (13, 6%), AT&T Mobility (12, 6%), and Nokia (9, 4%)
3. Patent Landscape by Technology
Relay technology for improving cell coverage and/or user throughput (96), SU-MIMO for improving spectrum usage efficiency (18), and Carrier Aggregation for flexible radio resource allocation (14)
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