Name - Jyotirmayee Rautaray Branch - Computer Science Engg. Regd. No Name - Jyotirmayee Rautaray Branch - Computer Science Engg. Regd. No

 Introduction  History  Need of wiBro  Technical Overview  Applications  WiBro vs WiMax  Advantages  Disadvantages  Future Plans  conclusion  References

 WiBro, or Wireless Broadband, is the newest variety of mobile wireless broadband access.  WiBro technology is being developed by the Korean Telecoms industry. It is based on the IEEE e (Mobile WiMax) international standard.  It adopts TDM multiplexing TDD duplexing technique and OFDMA multiple access technique and 8.75/10.00 MHz as a channel bandwidth.  It’s High-speed Portable Internet

Liimit of Exiistiing Technollogiies  WLAN (IEEE series) Support very high data rate but limited coverage and mobility not Supported  Cellular Support large coverage and fast mobility but data rate is low and too expensive

Korean based fixed-line operators KT,SK Telecom were the first to get the licenses by the South Korean government to provide WiBro Commercially. Samsung had a demonstration on WiBro Mobile Phones and Systems at the “APEC IT Exhibition 2006”. WiBro is comprised of two phases namely WiBro Phase I and WiBro Phase II

 WiBro Phase-I Standardization  WiBro Phase-II Standardization Scope Based on WiBro Phase-I Maximum data rate 50Mbps be supported  IEEE Standard Compatibility

Provide the way to use high speed internet service not only in home but also in outdoor. Maximize the spectral efficiency Extend the service coverage Reduce the cost per bit Low power consumption Faster handoff

Robustness against channel and interference fluctuation H-ARQ at UL (uplink) and DL (downlink) Fast physical layer retransmission Soft combining and Incremental redundancy Overcome the adaptation error of AMC Frequency reuse factor of 1

PSS RAS PSS ACR Public IP Network ACR PSS Operator’s IP Network PSS RAS ACR : Access Control Router ACR : Access Control Router RAS : Radio Access Station RAS : Radio Access Station PSS : Personal Subscriber Station PSS : Personal Subscriber Station

Major System Parameters Parameters Radio Access Requirement TDDTDD Frequency Reuse Factor DuplexingDuplexing 1 OFDMAOFDMA MultipleAccessMultipleAccess 10 [MHz] ChannelBWChannelBW Mobility ≤ 60 [Km/h] Service Coverage ≤ 1 [Km] Spectral Efficiency [bps/Hz/cell(sec t.)] 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]

WiBro PHY Layer Specification

 High spectral efficiency support  TDD Minimize guard band  10MHz BW/OFDMA Minimize multi-path interference  High modulation order (QPSK, 16QAM, 64QAM) & enhanced channel coding  Full coverage support  Cellular operation with frequency reuse factor 1 High spectral efficiency & easy cell planning

Minimize interference using diversity subchannel Compensate low SINR at cell edge using low rate coding  Fast handover with mobile IP Features

Commerce & Finance Mobile Banking, Trading Finance, Field Agent Service Entertainment Broadcasting 3D Network Game Multimedia Messaging Web Browsing File Downloading Interactive News & Info. Distance Edu./Med. Home Networking Information Home Networking

Item ItemWiBro High Speed DSL WLANCellular(2/2.5G) Service Area Outdoor/IndoorIndoor Indoor (Hotspot) Outdoor/Indoor Data Rate High speed Ultra high speed Very high speed Med/Low speed MobilityHighNoLow Very high Contents Wired/Wireless Contents Wired Contents Wired/Wireless Contents Wireless Contents Tariff Relatively Low LowHigh Terminal Smart phone, PDA, Notebook etc. Desktop, Notebook PDA, Notebook Cellular phone, PDA

 WiMAX is a wireless digital communications system, also known as IEEE , that is intended for wireless "metropolitan area networks".  WiMAX can provide broadband wireless access (BWA) up to 30 miles (50 km) for fixed stations, and miles ( km) for mobile stations

Physical Layer Differences. MAC Layer Differences-handoffs. Network architecture Differences.

Low cost and High Data rate. The technology will also offer Quality of Service. The spectrum it uses is licensed and correspondingly protected from un-licensed use. WiBro can be considered as “Mobile WiMax” which can be used while the receiver is in motion. High network capacity

The proprietary nature of WiBro and its use of licensed spectrum that may not be available across the globe may keep it from becoming an international standard. Interference.

WiBro Expected to be widely deployed all over the world in a few years. Some Telcos in many countries are trying to commercialize WiBro.

WiBro is the first wireless broadband service in the world using 2.3 GHz band. – Provide 1Mbps data rate with low speed movement(60Km/h) New type of wireless service complements fixed broadband internet and 3G wireless service.

– User can access plain internet website in mobile environment with low price – Various types of bundling strategies exist