PRESENTED BY ROGIN JOSE S7 EC ROLL NO: 40 WiBroTM Overview PRESENTED BY ROGIN JOSE S7 EC ROLL NO: 40

Contents WiBro overview Korea Standardization IEEE802.16 & WiMAX I II

WiBro overview PART I

WiBro - Definition WiBro Definition Reference High Mobility Data Rate Portable Internet Service (WiBro) is to provide a high data rate wireless internet access with PSS (Personal Subscriber Station) under the stationary or mobile environment, anytime and anywhere. Definition 『Portable Internet』was named as 『WiBro』. (End of April, 2004) WiBro : Wireless Broadband Reference WiBro Low Cost Anytime, Anywhere Mobility High Data Rate

WiBro - Definition Much lower service charges than EV-DO Much higher-speed Internet access than EV-DO Mobile Internet access in high-speed mobile environment Much wider coverage than wireless LAN-based services Internet Access High Data Rate Anytime, Anywhere Stationary or Mobile Stationary/Mobile mid-mobility (~60Km/Hr) Indoor/outdoor Seamless access over 1Mbps High-speed Multimedia User Terminal : Notebook, PDA, Handset Definition Concept

WiBro - Positioning WiBro Mobility User Data Rate High Mobility WLL Fixed High Mobility IMT2000 (3G) Mobility 2.4GHz Wireless LAN WiBro User Data Rate ADSL/HFC/B-WLL The next Generation Multimedia Service Cellular PCS (2G)

WiBro – Frequency Allocation 1.92 1.98 2.11 2.17 2.30 2.33 2.37 2.40 2.4835 5.725 5.825 [ GHz] 40MHz HTI (20) 2.4GHz (83.5) 5.8GHz (100) A B C 130MHz K T IMT2000 WLL ISM KT (UP) 2.30 2.31 2.33 2.37 2.38 2.40 [ GHz] HTi GUARD BAND (DOWN) 10MHz 20MHz 40MHz 10MHz 20MHz WiBro 1FA=9MHz 2300MHz 2400MHz Band 1(SKT) Band 2(KT) Band 3(TBD) Guardband=4.5MHz Guardband=10MHz Fixed & Mobile Fixed

Frequency Reuse Factor [bps/Hz/cell(sector)] Key Factors of WiBro Major Decision The TTA PG702 Meeting of Jan 31, 2004 approved the Major System Parameters & Radio Access Requirements as follows. TTA changed Standardization committee name from PG302 to PG702 according to reorganization of TTA standardization committee (Dec. 2007) Major System Parameters Radio Access Requirement TDD Frequency Reuse Factor Duplexing 1 OFDMA Multiple Access 8.75 [MHz] Channel BW Mobility ≤ 60 [Km/h] Service Coverage ≤ 1 [Km] Spectral Efficiency [bps/Hz/cell(sector)] Max. DL / UL = 6 / 2 Aver. DL / UL = 2 / 1 Handoff ≤ 150 [ms] Throughput (per user) Max. DL / UL = 3 / 1 [Mbps] Min. DL / UL = 512 / 128 [Kbps]

Network Architecture of WiBro PSS HA RAS ACR AAA Public IP Network Operator’s IP Network … ACR : Access Control Router RAS : Radio Access Station PSS : Personal Subscriber Station

WiBro Business in Korea 3 Operators are selected at February 2005. KT, SKT, (TBD) Operators 27 MHz per operator Band#1 : 2300 ~ 2327MHz (SKT) Band#2 : 2331.5 ~ 2358.5 MHz (KT) Band#3 : 2363 ~ 2390 MHz Frequencies Trial Service during 1Q of 2006. Launching Commercial Service : June 30, 2006 Status

Korea Standardization PART II

Committee Structure & ToR of PG702 Radio Access Working Group IMT WiBro Project Group (PG702) Service and Network International Coordination Ad Hoc Radio Access Standardization on IMT WiBro Radio Access Standardization for In-building WiBro International Coordination and Collaboration Activities (IEEE 802.16 and ITU-R WP5D, etc.) Standardization related to Service and Network on IMT WiBro International Coordination and Collaboration activities related to Service and Network on IMT WiBro International Coordination Activities related to IMT WiBro (IEEE 802.16, ITU-R WP5D, WiMAX, CJK and TTA PG701, etc.) Analysis of International Standardization and Progress related to IMT WiBro IOT/CT Standardization of Profiling, Interoperability and Conformance Test on IMT WiBro Coordination and Collaboration activity with WiMAX Forum * ToR : Terms of Reference

IEEE802.16 and WiMAX IIl

IEEE802.16 Body Working Group on Broadband Wireless Access Chair : Roger B. Marks (NIST) Task Group TGe* : enhancement to support mobility (session closed) Maint* : corrigendum to IEEE std802.16-2004 TGh : amendment for license-exempt options TGc : amendment for conformance test TGf/g : MIB and Management Plane procedures MMR SG : Mobile Multihop Relay * TTA PG302 works for harmonization with TGe and Maint

WiBro and IEEE 802.16 Fixed Wireless (TGd) IEEE Std 802.16-2004 : published on Oct. 1, 2004 As a revision of IEEE Standard 802.16-2001 (as amended by IEEE Standard 802.16c-2002, and IEEE Standard 802.16a-2003). Mobility Support Enhancement (TGe) IEEE Std 802.16e-2005 : Published on Feb. 28, 2006(including 802.16-2004/Cor1) P802.16e standard approved by IEEE-SA on Dec. 7, 2005. - Amendment for Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands below 6 GHz WiBro Specification = Subset of Consolidated version of “IEEE Std. 802.16-2004 + P802.16e +P802.16-2004/Cor1.”

Relationship between WiBro and IEEE 802.16 IEEE Standard 802.16-2004 (SC, SCa, OFDM, OFDMA PHY mode with Single IEEE 802.16 MAC) IEEE P802.16-2004/Cor1 (To correct errors, inconsistencies, and ambiguities in IEEE Standard 802.16-2004) IEEE P802.16e (Combined Fixed and Mobile Operation in Licensed Bands below 6 GHz) WiBro (Complete Subset of IEEE 802.16) Should support the IEEE Standard 802.16-2004 and IEEE P802.16e and provide the 5 criteria (TDD, FRF=1, 60km/hr mobility support, FA >= 9 MHz, roaming between operators, etc) Shall support the Mandatory Features of IEEE 802.16. WiBro Profile = the set of functionalities configuring every mandatory features and many optional features of 802.16e. WiBro Air Interface Specification is fully compatible with IEEE P802.16e WiBro Profiles and Test Specifications will be harmonized with WiMAX Forum’s currently developing Mobile WiMAX Profiles and Test Specifications. (Most of the major manufacturers are participating as the active members of WiBro and WiMAX.) * FRF : Frequency Reuse Factor

IEEE 802.16 Specifications

WiMAX Forum Scope Board of Directors (13 Prs. from 12 companies) Promote use of BWA products support 802.16 standard Interoperability of all products support 802.16 standard Propose and promote access profiles for .16 standard Certify interoperability levels in network and cell Board of Directors (13 Prs. from 12 companies) President and Chair: Ron Resnick, Intel Vice President: Dr. Mohammad Shakouri, Alvarion WiMAX Forum Member Companies 340 companies

WiMAX Working Group NWG : higher level network specification for fixed, nomadic and mobile. SPWG : Feedback from Service Providers TWG : conformance and interoperability CWG : evaluation of testing options

Parameters of WiBro specification (1/2) Value Duplex TDD Multiple Access OFDMA System Bandwidth 10 MHz Sampling frequency Number of used tones 864 out of 1,024 Number of data tones 768 Number of pilot tones 96 Tone spacing 9.765625 kHz Signal bandwidth 8.447 MHz Ratio of cyclic prefix time to the basic OFDM symbol time 1/8 Basic OFDMA symbol time 102.4 ms Cyclic prefix time 12.8 ms OFDMA symbol time 115.2 ms TDD frame length 5 ms Number of symbols in a frame 42

Parameters of WiBro specification (2/2) Downlink symbol parameter Value Number of bands 24 Number of bins per band 4 Number of tones per bin 9 (8 data + 1 pilot tones) Number of tones per AMC subchannel 54 (48 data + 6 pilot tones) Number of tones per diversity subchannel Number of bins per AMC subchannel 6 Uplink symbol / tile parameter Value Number of bands 24 Number of bins per band 4 Number of tones per bin 9 (8 data + 1 pilot tones) Number of tones per tile Number of bins per AMC subchannel 6 Number of tiles per diversity subchannel

Frame Structure ... . 5 ms DL UL TTG RTG BIN UL control symbols TILE Band 3 B-2 5 ms 1 2 B-1 BIN ... UL control symbols TILE PUSC Subchannelization Diversity subchannelization AMC Subchannelization

Summary of Key Features (1/2) Multiple Access/Duplexing: OFDMA/TDD Frame length: 5 msec Bandwidth: 10MHz with 1k-FFT Flexible subchannelization for band selection and diversity Fast AMC (adaptive modulation and coding) subchannel based on uplink CQI (channel quality indicator) Full diversity subchannel by multiple symbol grouping Preamble for Cell differentiation with different Random sequences

Summary of Key Features (2/2) Pilot tone based downlink and uplink Separate ranging channel time slot Safety channel More efficient channel coding: convolutional turbo code and short block codes H-ARQ with CTC in the downlink and uplink Modulation level: QPSK(DL/UL), 16QAM(DL/UL), 64QAM(DL only) Optional AAS (adaptive antenna system) support

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