4G Key Technologies Patent Landscape

1. SC-FDMA Patent Landscape SC-FDMA (Single Carrier-Frequency Division Multiple Access) is a key technology for LTE Up-Link (from UE to eNode-B) Communication. SC-FDMA reduces the PAPR (Peak-Average-Power-Ratio): high PAPR was the problem with the conventional OFDMA. Analysis for US patents issued before January 1, 2009 and published patent applications before May 1, 2009 shows that 3Com is and Samsung are the leader in issued patent and published patent application respectively. (Fig. 1.1 and Fig. 1.2) ©2009 TechIPm, LLC All Rights Reserved www.techipm.com 2

2. OFDMA Patent Landscape OFDMA (Orthogonal Frequency-Division Multiple Access), which is a multiple access version of the well known OFDM (Orthogonal Frequency-Division Multiplexing) modulation, is the most important technology in current and emerging wireless communications. Analysis for the top 25 assignees in US patents issued before May 1, 2009 shows that AT&T is the leader followed by Matsushita Electric, Qualcomm, Samsung Electronics, Intel, and Motorola. (Fig 2.1) ©2009 TechIPm, LLC All Rights Reserved www.techipm.com 5

3. MIMO Patent Landscape MIMO (Multiple-Input Multiple-Output) is a key technology for IEEE .802.11n, WiMax, and LTE utilizing multiple antennas at both the transmitter and receiver to improve wireless communication performance. Analysis for US patents issued before May 1, 2009 and published patent applications before May 1, 2009 shows that there was a dramatic increase in patent applications recently due to active technology innovations in 4G mobile Communications. (Fig. 3.1) As for the issued patents, Qualcomm is the leader followed by Intel and Lucent as of April 30. 2009. (Fig. 3.2) As for the published patent applications, Samsung is the leader followed by Qualcomm, InterDigital, Broadcom, and TI as of April 30. 2009. (Fig 3.3) ©2009 TechIPm, LLC All Rights Reserved www.techipm.com 7

4. Femto Cell Patent Landscape Femto cell is an emerging technology designed for use in residential or small business area cellular base station. Research for US published patent applications shows that the femto cell technology got attention among mobile technology innovators recently Research for US published patent applications shows that the femto cell technology got attention among mobile technology innovators recently, and is expected to be very competitive in technology development near future. (Fig. 4.1) Analysis for Top 10 innovators shows that Airwalk Communications and Qualcomm are the leader followed by Via Telecom and Lucent Technologies as of June 16, 2009. (Fig. 4.2) ©2009 TechIPm, LLC All Rights Reserved www.techipm.com 11

5. Software Radio Patent Landscape Software radio system is a wireless communications system where components that have been implemented in HW are instead implemented using SW. Software Radio is a key technology for 4G mobile communications. Analysis for US patents issued before May 1, 2009 shows that there was a rapid increase in patent applications recently due to active technology innovations in 4G mobile communications. (Fig. 5.1) As for the issued patents, Harris Corporation is the leader followed by Ericsson and Motorola. (Fig 5.2) ©2009 TechIPm, LLC All Rights Reserved www.techipm.com 14

6. Mesh Networks Patent Landscape Mesh networks is a key technology for wireless ad hoc networks connected to each other network nodes via multiple hops. Analysis for the top 10 assignees in US patents issued before May 1, 2009 shows that Mesh Networks Inc. is the leader followed by Harris, Microsoft, Nokia, and Cisco. (Fig 6.1) ©2009 TechIPm, LLC All Rights Reserved www.techipm.com 17

7. MBMS Patent Landscape MBMS (Multimedia Broadcast Multicast Service) is a broadcasting service such as TV broadcasting and multimedia Newspapers over the cellular mobile networks. Analysis for top 10 assignees in US published patent applications before May 1, 2009 shows that Samsung is the leader followed by LG, Nokia, and Huawei. (Fig 7.1) ©2009 TechIPm, LLC All Rights Reserved www.techipm.com 19

4G Key Technologies Patent Landscape

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