This document discusses using TV white space spectrum and technologies like Super WiFi (802.11af), 802.22, and LTE-TDD to support wireless internet hotspots. It compares Super WiFi and LTE-TDD for supporting hotspots and outlines both the technical and business challenges of using LTE-TDD femtocells deployed on TV white space to provide wireless internet access, such as developing an O&M system, satisfying spectrum regulations, and finding partners and customers.

1. What is TV White Space ?
802.11af, 802.22 or LTE-TDD

2. Internet Revolution ???

3. How does it works ?
1 2
3 46
7
8
9
PMSE-DB is a web-based tool. It supports frequency planning for events. This ensures smooth
operation of wireless devices for all participants.

4. Available spectrum of rural area in USA
https://www.google.com/get/spectrumdatabase/channel/
2700 foster avenue arcata ca

5. Available spectrum of urban area in USA
https://www.google.com/get/spectrumdatabase/channel/
1281 Oakmead Pkwy #201, Sunnyvale, CA

7. Effect of Deployment

8. Applications
http://www.carlsonwireless.com/solutions/
SCADA
= Supervisory Control And Data Acquisition,
= 산업제어 시스템

9. Compare, Super WiFi vs LTE-TDD to support HotSpot
Super WiFi
(802.11af or 802.22)
LTE -TDD
(3GPP TS Rel 9)
Data TPUT DL 26 Mbps @ 256-QAM 0.83 coding rate
DL 29 Mbps @ 64-QAM 0.93 code rate
UL/DL configuration = 2
Radio Resource
Scheduling
Autonomous Scheduling eNodeB Centralized Scheduling
Asymmetric Traffic Supported by CSMA/CD Supported by UL/DL configuration
QoS
Loose QoS
Voice traffic can be NOT be
supported in heavy load
Tight QoS
Voice traffic can BE
supported even in heavy load
Support User Equipment
(CPE)
Super WiFi <-> WiFi
RF Converter is required
Not Spread in market
LTE-TDD <-> WiFi
RF Converter is required
Widely Spread
Competitors Many in USA Hawei is studying business opportunity.
Dealing cost
to Aritel
All New Development.
Cost is High
Dealing RF Converter, CPE, and EPC
Cost is Medium
802.11af, the IEEE has standardized another white space cognitive radio standard, 802.22.[1]
While 802.11af is a wireless LAN standard designed for ranges up to 1 km,
802.22 is a wireless regional area network (WRAN) standard, for ranges up to 100 km.[

10. Architecture of LTE-TDD femto to support HotSpot and Challenges
IP
Network
EPC
Aritel’s
femto
RF
Converter
RF
Converter
LTE-TDD
Router
WiFi
AP
UE
Technical Challenges
- Support 6/7/8/16 MHz BW
- Access to White Space Database
- Development of OAM system
- Satisfy TVWS spectrum mask
- Additional UL/DL Configuration
- Control RF Converter and LTE-TDD Router
- Use Directional Antenna
- Capacity for simultaneous connection (~ 32)
- Carrier aggregation for more throughput
Business Challenges
- Finding partner who can provide CPE on TVWS
- Finding buyers
- Support Field Issue after Supply
OAM
White Space
Database
LMK
Google
MVNE
LMK HAWEI ipTime
Notebook PC
Smartphone
Gamma-Nu Gamma-Nu
Aritel
Aritel
Network CPE
Controller