Neha 4g wireless network

4G Wireless Networks ST.FRANCIS DE SALES COLLEGE Electron IC City Hebbgodi Bangalore NEHA PRESENTATION Prepared by NEHA PANDEY

Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What is 4G? ,[object Object],[object Object],[object Object],[object Object],[object Object]

What's New in 4G? ,[object Object],[object Object],[object Object],[object Object]

Features of 4G Networks ,[object Object],[object Object],[object Object],[object Object],[object Object]

Features of 4G Networks (cont.) ,[object Object],[object Object],[object Object],[object Object],[object Object]

3G vs. 4G From : www.mobileinfo.com All IP (IP6.0) A number of air link protocols, including IP 5.0 IP multi-band adapters Smarter Antennas, software multiband and wideband radios Optimized antenna design, multi-band adapters Component Design Concatenated coding scheme Convolution rate 1/2, 1/3 Forward Error Correction OFDM and MC-CDMA (Multi Carrier CDMA) W-CDMA, 1xRTT, Edge Access Technologies All digital with packetized voice Circuit and Packet Switching Design Basis 100 MHz (or more) 5-20 MHz Bandwidth Higher frequency bands (2-8 GHz) Dependent on country or continent (1800-2400 MHz) Frequency Band 20 to 100 Mbps in mobile mode 384 Kbps to 2 Mbps Speeds Hybrid - Integration of Wireless LAN (WiFi, Bluetooth) and wide area Wide area cell-based Network Architecture Converged data and voice over IP Predominantly voice driven - data was always add on Major Requirement Driving Architecture 4G 3G (including 2.5G)

How 4G works (working principle) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],home address care-of address mobile IP address local network address

IPv4 vs. IPv6 ,[object Object],[object Object],Addressing Function Enhance security Poor security Security 128 bits 32 bits Structure IPv6 IPv4

The 4G mobile network(s) HAPS GSM UMTS WLAN Bluetooth Satellite Wireline or Wireless Networks (Internet) ADSL Home Add. Mobile IP Add. Care-of Add. Care-of Add. Services Content Very wide area Wide area Metropolitan area Local area Personal area Direct Sequence Frequency Hopping WCDMA TD-CDMA TDMA FDD OFDM TDD OFDM Unspecified

4G Systems Challenges ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],4G Wireless Networks Challenges First Challenge: Accessing Different Networks

First Challenge: Accessing Different Networks 1. Multimode Devices Architecture ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

To reduce the complexity of the hardware in the device the most promising technology is to adapt the software radio approach BPF LNA ADC reprogrammable Baseband DSP User Analogue Digital An ideal software radio system Multimode Devices Architecture (cont.) Analog/digital converter bandpass filter Low noise amplifier

[object Object],[object Object],Multimode Devices Architecture (cont.) Challenges in software radio technology

First Challenge: Accessing Different Networks 2. Overlay Network Architecture ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],4G Wireless Networks Challenges Second Challenge: Terminal Mobility

[object Object],[object Object],[object Object],[object Object],[object Object],Second Challenge: Terminal Mobility 1. Location Management

Second Challenge: Terminal Mobility 2. Handoff Management ,[object Object],[object Object],216.37.129.9, home address care-of address mobile IP address local network address 79.23.178.229, IPv6 within the same cell: 65.198.2.10, 192.168.5.120

Second Challenge: Terminal Mobility 2. Handoff Management 216.37.129.9, home address care-of address mobile IP address local network address 79.23.178.229, IPv6 when the terminal roams to another cell: 65.198.2.10, 192.168.5.120

[object Object],[object Object],Handoff Management (cont.) Handoff Management Challenges

[object Object],[object Object],[object Object],[object Object],[object Object],Challenges in Handoff Management

Summary ,[object Object],[object Object],[object Object]

Neha 4g wireless network

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Neha 4g wireless network