Tutorial Title: 4G Network Architecture and Power Saving Protocols

Speaker: Prof. Saewoong Bahk, Visiting professor at UMKC from Seoul National University, Korea

Abstract: This tutorial covers an overview of 4G network architecture and power saving protocols. Firstly, the tutorial briefly highlights the QoS architecture of 4G that is designed to support 100Mbps of data speed in mobile mode and 1Gbps in nomadic mode. Also each user should be able to have multiple sessions at the same time. To support user mobility and QoS with multiple sessions, IP multimedia subsystem (IMS) has been proposed from 3GPP and recently started to be deployed. It is expected to evolve towards the 4G network which will have the all-IP architecture. I will focus on the concept of IMS and operation scenarios.

Secondly, I will cover the issue of power saving in 4G networks as it is directly linked with the life time of mobile terminal (and the network life time in case of adhoc or sensor networks). Power saving can be achieved throughout all the layers including the upper layer technology of TCP control and routing. In this tutorial, I will focus on the technology of MAC layer to extend the life time by controlling the doze time of each node. I will review the reality of power saving methods in wireless cellular networks including the power saving standard in the mobile WiMAX network, which has been recently deployed as an interim solution towards the 4G network. In addition, the power saving in WLAN will be also covered as it will be a part of 4G network, which has the operations of infrastructure mode and adhoc mode. Outline:

1. 4G network architecture

- Brief Review of LTE, UMB, Mobile Wimax

- Issues of QoS and mobility support

   - IMS (IP Multimedia Systems)

- IMS architecture towards 4G

2. Power saving protocols

   - 2G and 3G networks

   - IEEE 802.16e (Mobile Wimax)

   - IEEE 802.11(WLAN) with infrastructure and adhoc modes

   - Power saving algorithms

Prospective Audience: Participants are expected to have a background about basic communication technology of IP.

Presenter’s Biography: Prof. Saewoong Bahk Received the B.S. and M.S. degrees in electrical engineering from Seoul National University in 1984 and 1986 respectively, and the Ph.D. Degree from the University of Pennsylvania in 1991. From 1991 through 1994 he was with AT&T Bell Laboratories as a technical staff where he worked for AT&T network management. In 1994, he joined the school of electrical engineering at Seoul National University and currently serves as a professor. He has been serving as TPC members for IEEE Globecom, ICC, INFOCOM, PIMRC, HPSR, WCNC, etc. He was a recipient of SBS (Seoul Broadcasting Station) award of year 2007. He is an Editor of Journal of Communications and Networks (JCN), editor-in-chief of KICS Journal, IEEE senior member, and a member of Who’s who professional. He conducted many industrial projects from companies including Samsung, Intel, LG, etc. He authored/coauthored over 100 international technical papers and holds/filed 10 US patens mainly in the area of wireless networking. https://netlab.snu.ac.kr