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[Wireless Network] A Brief Introduction to LTE-U (LTE Advanced in Unlicensed Spectrum)

Spectrum is life-blood of wireless networks. Licensed spectrum is operators’ first choice, as it provides reliability, and predictable performance. Hence the industry is hard at work to make best use of existing spectrum and looking for more licensed spectrum via traditional auctions and innovative paradigms such as authorized/licensed shared access (ASA/LSA). At the same time, […]

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[Wireless Network] Introduction to Multipath TCP (MPTCP)

MPTCP is an evolution of TCP that allows a concurrent use of multiple interfaces for a single TCP session. If the both sides of a TCP connection are MPTCP-capable (otherwise a legacy TCP will be used between them), multiple subflows are established over different data paths, i.e., multiple network interfaces, and the MPTCP sender spreads TCP segments over the subflows. Spreading […]

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[Wireless Network] 802.11e QoS and Rate Adaptation

As the follow up from Wi-Fi Introduction, other requirements called Quality of Service and Rate Adaptation for WLAN were introduced to understand its channel access (EDCA and HCCA). The detail presentation can be seen below. [gview file=”http://yurissaputra.staff.ugm.ac.id/files/2016/07/Yuris_20140327_802.11e-and-Rate-Adaptation.pdf”]

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[Wireless Network] Basics of Wi-Fi

Once in 2015, I was requested by my former supervisor to present this Wi-Fi Introduction in Mobile Computing class for M.S degree students in Department of Electrical and Information Engineering, Seoul National University of Science and Technology. Check it out for the detail presentation below. [gview file=”http://yurissaputra.staff.ugm.ac.id/files/2016/07/Yuris_20140310_Basics-of-Wi-Fi_ver2.pdf”]

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