WiBRO (Mobile WiMAX) Mobile WiMAX: The Best Personal Broadband Experience! WiMAX Forum, June 2006 WiBRO: A Wireless Broadband Technology Daehyoung Hong, KCIST2006 2006-10-11 Jihoon Lee () 4541.774 Topics in Internet
Contents 1. Overview of WiBRO and Mobile WiMAX 2. WiBRO (Mobile WiMAX) Technology 3. WiBRO/Mobile WiMAX Architecture Evaluation Performance Flexibility Advanced IP-based Architecture Attractive Economics 4. Conclusion 2/14
Overview History and Future WCDMA (3GPP) HSDPA HSUPA Interworking with 3GPP/3GPP2 802.20 (IEEE) 3GPP-LTE 4G WiMAX Forum Mobile WiMAX 802.16n (?) (IEEE) Converge into 4G! 802.16a (IEEE) HPi (ETRI, Samsung) 802.16d (IEEE, Intel) WiBRO (TTA) harmonize 802.16e (IEEE) WiBRO2 (ETRI) 3/14
Overview (cont.) Market & Position WiBRO (Mobile WiMAX) will coexist and interwork with existing and emerging technologies! 4/14
Overview (cont.) System Architectures WiBRO cf. 3GPP WCDMA To be more similar! Mobile WiMAX 5/14
Overview (cont.) System Comparison 6/14
Technology OFDMA Diversity mode and Band AMC mode For slowly moving users: allocate band AMC subchannels which have high quality channel response to increase transmission efficiency and coverage For fast moving users: allocate diversity subchannels distributed over whole frequency band to maximize frequency diversity 7/14
Technology Others PHY Hybrid ARQ support Adaptive Modulation and Coding Fast Channel Quality Report (CQI) Power Control MIMO & Beamforming Fractional Frequency Reuse MAC Flexible radio resource allocation Sleep mode Idle mode & Paging Frequency Selective Scheduling Fast Handover (FBSS) Multicast and Broadcast Service (MBS) Mobile Multihop Relay (802.16j) Network layer Network Mobility LBS AAA Roaming Interworking with 3GPP, 3GPP2, xdsl, IMS (by WiMAX Forum) 8/14
Evaluation Performance OFDMA: high spectral efficiency TDD: less complex and more cost effective to implement MIMO and beamforming 9/14
Evaluation Flexibility Scalable OFDMA Permit decoupling of access architecture from connectivity IP service Small scale to large scale (sparse to dense radio coverage and capacity) WiMAX networks Urban, Suburban, and rural radio propagation environments Licensed and/or license-exempt bands Hierarchical, flat, mesh topologies Co-existence of fixed, nomadic, and mobile usage models 10/14
Evaluation Advanced IP-based Architecture IP Core Network Simplify interworking with other IP technologies. Basically Mobile WiMAX(WiBRO) doesn t require IP Multimedia Subsystem (IMS) for its operation. With IMS, service providers can develop applications independently of the access technology. Support delivery of IP Broadcast and Multicast services IETF 16ng WG 11/14
Evaluation Attractive Economics Cost-effective, high-throughput broadband wireless services The cost of the equipment is low Open standards Efficient spectrum utilization Attractive IPR structure (10-15% of the average selling price 2-5%) 12/14
Evaluation Deployment Korea KT WiBRO, Data-centric mobile. service Italy Telecom Italia IP technology for 3G LTE Japan KDDI Overlay to EV-DO Yozan(2G operator) opportunity to lead ahead of 3G operators NTT (2007) US Comcast deploying Mobile WiMAX later as a complement of to their fixed broadband services. Sprint (2007) France France Telecom same as Comcast UK, Spain, Ireland, Venezuela, Brazil, Argentina, etc. 13/14
Conclusion Is there room for yet another wireless data technology in the market? What role is the best for each technology? How different technologies complement each other? How they meet their requirements in a cost-effective way? WiBRO (Mobile WiMAX) is the newest variety of mobile wireless broadband access technology. WiBRO (Mobile WiMAX) can become one of the strong candidates for the 4G wireless standard. "WiMAX clearly complements existing and emerging 3G mobile and wireline networks, and can play a significant role in helping our customers deliver converged service offerings that can be accessed using a broad range of devices on a wide variety of networks, John Marinho, vice president of strategic marketing for Lucent Technologies. 14/14