About the reporter:

Kaigui Bian received his B.S. degree in Computer Science from Peking University in 2005, and he received his Ph.D. degree in Computer engineering from Virginia Tech in 2011. He is currently an assistant professor in the Institute of Network Computing and Information Systems, School of EECS at Peking University. His research interests include cognitive radio networks, mobile computing, network security and privacy.  He was a "StraTrack" visiting scholar （“铸星计划”） at Microsoft Research Asia in 2013.

Title:

On the Rendezvous and Coexistence Problems in Cognitive Radio Networks

Time: Starts at 9:00 AM, April 15th 2014

Venue: A811, Building A, Shenyang Institute of Automation, CAS

Abstract:

In cognitive radio (CR) networks, secondary users opportunistically share the fallow licensed spectrum on a non-interference basis to primary users (a.k.a. licensed users). I will talk about two challenging problems in the design of medium access control (MAC) protocols in CR networks: (1) the rendezvous (control channel establishment) problem, and (2) the coexistence problem for heterogeneous CR networks. To address the rendezvous problem, we consider a systematic approach for designing channel hopping based rendezvous protocols that ensure a pair of CRs to “rendezvous” within an upper-bounded time over a common channel that is free of primary user signals. Given the coexistence requirements in CR networks, I will introduce an inter-network spectrum sharing protocol that enables the sharing of vacant TV white space among coexisting heterogeneous CR network.

Welcome to come!