Licensed vs Unlicensed Microwave Technology. Overview of Wireless John Dolmetsch
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1 Licensed vs Unlicensed Microwave Technology
2 Wireless Topics Common licensed and unlicensed frequencies Frequencies and Ranges Indoor Wireless Technologies Licensed vs. Unlicensed Frequencies Mobile Applications Hot Spot Applications Security Installation and Equipment Future of Wireless
3 Unlicensed Myths You can have more than one antenna in a given area There is a high occurrence of interference with unlicensed links Unlicensed links are less reliable than licensed links Interference will cause an outage 100% of the time Unlicensed links are not carrier class equipment Unlicensed is less secure than licensed
4 Licensed Myths Licensed technology is more expensive than unlicensed FCC licensing is very expensive and time consuming There are not many manufacturers of licensed microwave equipment Licensed technology is more difficult to install FCC licenses are hard to get
5 Licensed vs. Unlicensed Distance limitations Power Output Interference License Process and Costs - $2500 per link or more Licensed Multipoint Frequency Planning and Neighbor Coordination Environmental Factors Rain Zones Fade Margin and Rain Fade Antenna Size
6 How to Choose Step 1 Determine your required bandwidth Step 2 Determine your coverage area Step 3 Have a spectrum analysis completed for the area Step 4 Ask the tower or structure owner about their interference policy Step 5 Determine your risk tolerance for interference Step 6 Determine your budget Step 7 Can you use large antenna? Step 8 Pick your frequency
7 Frequencies and Applications Common Unlicensed Frequencies 900Mhz Multipoint indoor and outdoor 2.4Ghz Point to Point, multipoint indoor and outdoor 5.3/8Ghz Point to Point, multipoint indoor and outdoor 60Ghz Point to Point outdoor Common Licensed Frequencies 800 MHz Multipoint outdoor government and EMS 900 MHz Multipoint outdoor government and SCADA 2.1/7Ghz Point to Point and Multipoint outdoor 6/38Ghz Point to Point outdoor
8 900 MHz Unlicensed Indoor wireless phones and low speed data Outdoor multipoint with low speed data Bandwidth speeds of up to 1MB Penetrates obstructions, walls and foliage very well Outdoor ranges to 20 miles with line of sight Outdoor ranges to 3 miles with no line of sight Not affected by weather or environmental factors Used by Wireless ISPs, Water Quality Control, Government and mobile Manufacturers include Motorola, Alvarion, WaveRider, etc Overall low cost, high penetration and low bandwidth
9 2.4 Ghz Unlicensed Indoor wireless data devices and phones with average speed data Outdoor multipoint and point to point with average speed data Bandwidth speeds of up to 11MB Average ability to penetrate obstructions, walls and foliage Outdoor ranges to 40 miles with line of sight Outdoor ranges to 1 miles with no line of sight Not affected by weather or environmental factors Used by Wireless ISPs, Education, Commercial and home users Manufacturers include Cisco, Proxim, Alvarion, etc Overall low cost, average penetration and average bandwidth
10 2.4 Ghz Technologies B Direct Sequence Radios Indoor radio equipment with ranges to 500 ft Outdoor radio equipment with ranges to 20 miles Low cost indoor access points and CPE devices Speeds of 11MB Industry standard with many manufacturers Primarily indoor multipoint and outdoor point to point Prone to security problems if not implemented correctly
11 2.4 Ghz Technologies Frequency Hopping Radios Primarily for outdoor multipoint Outdoor radio equipment with ranges to 12 miles Average cost outdoor access points and CPE devices Speeds of 3MB Excellent ability to avoid interference Mobility capable Not Prone to security problems due to proprietary designs
12 5.3, 5.7 and 5.8 Ghz Unlicensed Indoor wireless data devices with high bandwidth Outdoor multipoint and point to point with high speed data Bandwidth speeds of up to 480MB Average ability to penetrate obstructions, walls and foliage Outdoor ranges to 30 miles with line of sight Outdoor ranges to 3 miles with no line of sight Somewhat affected by weather or environmental factors Used by Wireless ISPs, Education, Government and Commercial Manufacturers include Cisco, Proxim, Alvarion, Motorola,etc Overall average cost, low penetration and high bandwidth
13 60 Ghz Unlicensed Outdoor wireless data devices with high bandwidth Outdoor point to point with high speed data Bandwidth speeds of up to 1GB No ability to penetrate obstructions, walls and foliage Outdoor ranges to 2 miles with line of sight Very affected by weather or environmental factors Used by Education, Government and Commercial Manufacturers include Terrabeam, YDI, AirFiber,etc Overall high cost, no penetration and very high bandwidth
14 MHz Licensed Outdoor wireless phones and low speed data Outdoor multipoint with low speed data Bandwidth speeds of up to 1MB Penetrates obstructions, walls and foliage very well Outdoor ranges to 20 miles with line of sight Outdoor ranges to 10 miles with no line of sight Not affected by weather or environmental factors Used by Water Quality Control, Government and mobile Manufacturers include Motorola, Alcatel, Harris, etc Overall high cost, high penetration and low bandwidth
15 2.1 to 2.7 Ghz Licensed MDS, MMDS and ITFS Outdoor multipoint with average data speeds Bandwidth speeds of up to 30MB Average penetration of obstructions, walls and foliage very well Outdoor ranges to 30 miles with line of sight Outdoor ranges to 10 miles with no line of sight Not affected by weather or environmental factors Used by Carriers, Government and mobile Manufacturers include Motorola, Alcatel, Harris, etc Overall high cost, average penetration and average bandwidth
16 6Ghz to 38Ghz Licensed Outdoor point to point with high data rates Bandwidth speeds of up to 1GB No penetration of obstructions, walls and foliage very well Outdoor ranges to 30 miles with line of sight affected by weather or environmental factors as frequency goes up Used by Radio Stations, Education, Carriers, Government and Commercial Manufacturers include Motorola, Alcatel, Harris, Ceragon, Proxim,etc Overall high cost and high bandwidth
17 Licensed Frequency Ranges Point to Point Mhz 2Ghz 6Ghz 11Ghz 18Ghz 23Ghz 38Ghz Miles
18 Unlicensed Frequency Ranges Mhz 2.4Ghz 5.7/8 Ghz 5.8 OFDM 24Ghz MTP Miles PTP Miles NLOS Miles
19 Outdoor Wireless Technology Typical Point-to-Point Range Chart Frequency Ranges: < 2Ghz Bandwidth Speed: 56Kbs to 1MB 40 Miles Frequency Ranges: 2.4Ghz to 5Ghz Bandwidth Speed: 1MB to 10MB 25 Miles Remote Radio Frequency Ranges: 5Ghz to 18Ghz Bandwidth Speed: 10MB to 155MB 10 Miles Remote Radio Frequency Ranges: 18Ghz to 60Ghz Bandwidth Speed: 100MB to 1GB Remote Radio Wireless Antenna
20 Outdoor Wireless Technology Typical Multipoint Range Chart Frequency Ranges: < 800Mhz Bandwidth Speed: < 28Kbs 18 Miles Frequency Ranges: 800Mhz to 2Ghz Bandwidth Speed: < 1MB 12 Miles Remote Radio Frequency Ranges: 2Ghz to 3.5Ghz Bandwidth Speed: 1MB to 5MB 6 Miles Remote Radio Frequency Ranges: 3.5Ghz to 6Ghz Bandwidth Speed: 5MB to 15MB Remote Radio Wireless Antenna
21 Outdoor Wireless Technologies Point to Point B, G and A Low cost links to 54MB, not a true outdoor technology yet 2.4Ghz Frequency Hopping Average cost to 3MB, proven outdoors 5.3 and 5.7Ghz Average cost to 45MB and 7 miles 5.8 Ghz Average cost to 480MB and 10 miles 5.8Ghz OFDM Average cost to 50MB and 30 miles, NLOS capable 6Ghz Higher Cost to 1GB and 25 miles 11Ghz Higher Cost to 400MB and 20 miles 18Ghz Higher cost to 200MB and 14 miles 23Ghz Higher cost to 45MB and 5 miles 60Ghz Average cost to 1GB and 2 miles
22 Outdoor Wireless Technologies Multipoint 900Mhz Low cost to 1MB and 6 miles, NLOS to 3 miles B, G and A Low cost links to 54MB, not a true outdoor technology yet, 1 mile range 2.4Ghz Frequency Hopping Average cost to 3MB and 12 miles 2.1/7Ghz MMDS High cost to 30MB and 10 miles 5.3 and 5.7Ghz Average cost to 20MB and 5 miles 5.8 Ghz Average cost to 60MB and 5 miles 5.8Ghz OFDM Average cost to 15MB and 8 miles, NLOS capable
23 Average Costs for Wireless Point to Point 2.4Ghz and 5.8Ghz low speed - $ per link 5.3-8Ghz 45 MB - $ $15, per link 5.8Ghz 100Mb and higher - $25, $80, per link 6-18Ghz 100Mb and Higher - $40, $120, per link 60Ghz 100MB and higher - $15, $40, per link Multipoint 2.4Ghz outdoor $ $ per base station 2.1/7Ghz MMDS - $20, $40, per base station 5.7/8Ghz - $ $ per base station
24 Licensed Considerations Point to Point Common Backhaul Frequencies 6Ghz not affected by rain 6Ft Antenna Minimum In Use by Public Safety 11Ghz somewhat effected by rain 4Ft Antenna Minimum In Use by Public Safety but more readily available 18Ghz very effected by rain 2Ft Antenna Minimum FCC restrictions and less channel bands available 23Ghz extremely effected by rain 2Ft Antenna Minimum
25 Unlicensed Coordination ft Tower 1 Tower 2
26 Protected Zones Protected zones are areas of the country that have been setup for space and weather observation purposes and special consideration must be taken when using certain licensed frequencies in these areas. 18Ghz Frequency Effected for Point-to-Point
27 FCC Resources - complete research, license search and application resource site Call the FCC at
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