JeremyMyers-EMTadvances - IMT-Advanced - Objective and...

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IMT-Advanced - Objective and Challenges K. Jay Miyahara Mobile Network Operations Unit NEC Corporation Tokyo, Japan [email protected] Abstract —This paper describes drivers and objectives for IMT- Advanced mobile broadband system defined by ITU-R as well as technical challenges. Keywords-component; IMT-Advanced; LTE; IEEE802.16; WiMAX I. INTRODUCTION The life with “internet” have evolved from simple eMail and file transfer, web surfing to enriched web-based communities and hosted services, such as social-networking sites, video sharing sites, wikis, blogs, and folksonomies. It can be said that most of these services are “user centric” and “user driven” and gradually changing the way we communicate and the business model. LTE and WiMAX started with solving clear technical objectives: improve radio spectrum efficiency and provide economical Mobile Broadband Wireless network. We should also consider how this evolution will enable new service to be created and how it may create new business models similar to what has been happening with Web 2.0 Obvious advantage LTE and WiMAX will offer is high speed transport. Higher bandwidth availability means less time to download (or transfer) given amount of data. This will significantly increase variety of information download/push services because minimizing the time to wait for information is one critical issue when assessing the usability of any service. In addition to the higher radio transport capability, introduction of all IP network architecture and various Open Interfaces will allow more flexibility in developing and deploying new services. Like evolution commonly know as Web 2.0 in the fixed internet world, user driven, user centric development of new services will likely to take place and will bring about new business models. To meet the ever increasing demand for wireless broadband communication (e.g. increased number of users, higher data rates, video or gaming services which require increased quality of service, etc.), " IMT-Advanced is currently under discussion in ITU-R, 3GPP, and IEEE802.16. II. TWO APPROACHES TOWARD IMT-ADVANCED;WIMAX AND LTE Although current WiMAX and LTE may seem similar, it is different in many ways. The difference in the current specification is mainly due to the intended deployment scenario and the timing of specification definition. IEEE 802 LAN/MAN Standards Committee has developed IEEE802.16 which defines WirelessMAN™ air interface specification for wireless metropolitan area networks " (MANs). Since the initial issue in October 2001, it has evolved from fixed broadband access system to mobile broadband access system. LTE standards have been developed by 3GPP as evolution of Third Generation Mobile System to support growing needs for high speed data traffic. Although LTE can support VoIP, it is assumed to coexist with existing mobile system (2G and/or 3G) for some time. Both WiMAX and LTE
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This note was uploaded on 07/30/2011 for the course COP 4810 taught by Professor Staff during the Spring '11 term at University of Central Florida.

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JeremyMyers-EMTadvances - IMT-Advanced - Objective and...

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