Download DRAFT GENERIC COMMUNICATIONS TECHNOLOGY DATA SHEET

DRAFT GENERIC
COMMUNICATIONS TECHNOLOGY
DATA SHEET
GENERAL CHARACTERISTICS:
Generic Communications
Technology:
Classification:
Subclassification:
Wireless LAN
LAN Interconnect via Spread
Spectrum Radio
Communications Link
Inter/Intra-LAN Access via
Radio Communications Network
Other Names:
OSI Physical Layer Std.
Applicability (Physical, Link,
Network):
APPLICABLE STANDARDS:
Organization:
Standard:
Federal
Title 47, Part
Communications
15.247
Commission (FCC)
Institute of
Electrical and
Electronic
Engineers (IEEE)
802.1B - 1992
802.1D - 1990
IEEE
802.2
IEEE
802.3
IEEE
802.3I - 1990
IEEE
802.3K
IEEE
Title:
Operation Within
The ISM Bands of
902-928 Mhz,
2.4-2.4835 Ghz &
5.725-8.850 Ghz
802.4
IEEE
802.5
IEEE
LAN/MAN
Management
802.5B
IEEE
802.2
Media Access
Control Bridges
IEEE
802.11
LAN Logic Link
Control
IEEE
Carrier Sensed
Multiple Access
w/Collision
Detection &
Physical Layer
Standards
CSMA/CD,
10Mbps Baseband
Networks, Twisted
Pair, 10Base-T
CSMA/CD Layer
Management for
10Mbps Repeaters
Token-Passing Bus
Access Method &
Physical Layer
Specification
Token Ring Access
Method & Physical
Layer Standard
Recommended
Practice for Use of
UTP for Token
Ting Data
Transmission @
Mbps
Local Area
Networks, Logical
Link Control
Wireless LAN
Physical Layer
Standards &
Applications
(DRAFT)
COMMENTS ON GENERIC COMMUNICATIONS
TECHNOLOGY
Wireless communication devices for Local Area Network (LAN)
interconnect and access are available from a variety of vendors and
provide wireline to wireless transmission and wireless to wireline
reception of digital packet information. Electrical connection is typically
available to Ethernet and Token Ring systems. Wireless technology is
primarily utilized to: A) interconnect LANs that are geographically
separated in a cost effective manner, B) provide point-to-point backup
LAN interconnection in the event that wireline communications fail and
C) provide connection of LAN services to multiple users in applications
where connectivity is difficult (ie., mobility).
User information bandwidths are limited by the method of communication
(eg., simplex or full duplex), separation of wireless devices, number of
users connected to wireless add/drop site (ie., bandwidth contention),
fading from rain and snow, antenna alignment, receiver sensitivity,
transmitter "power up" time, Signal-to-Noise and Distortion ratio (SINAD)
and sources of electromagnetic radiation/interference. The distance of
physical separation between transceiver locations will affect the Ethernet
CSMA/CD protocol to the degree that remote locations exceeding
Ethernet Physical Layer Specifications (distance of transceiver separation)
will have reduced access to network resources due to propagation delays
induced by the wireless link.
Special mounting provisions must be made to inter-building
communications links to avoid antenna lightning strikes and ensure
electrical system isolation. Connection of wireless devices to fiber optic
communication lines provides the greatest degree of electrical isolation
and performance. Provisions to ensure optimum transmission/reception
paths must be considered to provide reliable communications. The
communications wireless (antenna) line-of-sight must account for both
obstructions and potential interference from nearby
intentional/non-intentional radiators. Directional antennas are commonly
used to improve communications performance. Radio frequency
communications reliability is secondary to both fiber and wireline
technologies.
All radio communications equipment in this specification are FCC Part 15
type products and require no special licensing prior to system installation
and operation.
Spread spectrum radio utilizes two technologies, direct sequence and
frequency-hopping systems. Direct sequence spread spectrum radio is
resistant to noise due to its ability to spread radio transmission power with
respect to frequency. Direct sequence systems are better suited to the
demands of LAN interconnection. Frequency hopping systems induce
communication delays due to the time constraints placed on frequency
usage and channel selection based on acceptable noise levels. Frequency
hopping LAN interconnect systems are not as readibly available at this
time.
Devices that interconnect separate LAN environments (ie., hubs and
bridges) typically provide network management functionality and software
to determine the wireless link reliability. Devices providing wireless
interconnection to a single LAN environment (ie, access points & wireless
interconnect), also provide these capabilities. PC eschelon devices do not
typically allow advanced system diagnostics but afford limited RF link
analysis.
Spread spectrum radio interconnect to legacy LAN environments allows
quick installation time at a low cost, provides user roaming, data
encryption services for security, network management at the hub/bridge
level and a variety of networking topologies. Field tests of the PC
eschelon devices indicate microwave oven use in the vicinity of
intra-building spread spectrum systems will adversely impact the
communications performance of mobile users.
ETHERNET INTERFACE COMMUNICATIONS
PERFORMANCE:
Maximum Distance Between
Maximum Length:
Two Transceivers:
Maximum Latency (Circulation
Configurations:
Delay):
Max. # of MAC Entries (Physical
Medium Signal to Noise
Connections):
Supporting
Specified Communications
Data Rate:
Reliability:
Addressing:
Bit Error Rate:
Hybrid Operations:
Line Modulation:
Maximum Distance Between
Communications Services:
Field Frame Minimum:
Field Length Maximum:
Collisions Detected To Failure
Reporting:
Coaxial Cable Interface:
2.0Km; 4.0Km Network Span
51.2 microseconds
Maximum Repeaters on a Path
Between Two Transceivers:
Maximum Distance Between
Two Transceivers Without
Repeating:
10Base5 - 100 Terminals Per
Segment
10Base2 - 30 Terminals Per
Segment
1-20 Mbps (Covered by
Standard)
10 Mbps + 0.01% (Typical
Industry Standard)
Manchester; +0.85V and -0.85V
10BaseT:
Level 3 Cable - 100 Meters
Between Devices
Level 4 and 5 Cable - 175.5
Meters Between Devices
10Base5:
Thick Coax - 500 Meters
Maximum
10Base2:
Thin Coax - 185 Meters
Maximum
4
500 meters
2.5Km
Board Level for Computers;
Electronics Units with Bridges
Individual Addressing, Multicast
and Broadcast; 6 Bytes
64 bytes
1500 bytes
16
50 ohm Impedance and Loss
Characteristics of 17 dB/Km at
10 Mhz.
TOKEN RING INTERFACE COMMUNICATIONS
PERFORMANCE:
Maximum Length:
Maximum Latency (Circulation
Delay):
Max. # of MAC Entries (Physical
Connections):
Data Rate:
Bit Error Rate:
Hybrid Operations:
Line Modulation:
Maximum Distance Between
Terminal Connections:
Configurations:
Medium Signal to Noise
Supporting Specified
Communications Reliability:
Physical Interface:
2km
24 bits + 3 and 15 bits
respecitively for 4Mbps and 16
Mbps data rates.
250
4 Mbps and 16 Mbps + 0.01%
10-9 With Signal-to-Noise (S/N)
Ratio > 22dB
Manchester, Peak-to-Peak
Amplitude of 3.0V and 4.5V.
Electronic Units With Bridges.
Balanced, 150 ohm twisted pair
maintaining impedance balance
over the frequency range of 2-20
Mhz
WIRELESS HUB INTER-BUILDING FULLY DUPLEXED
COMMUNICATIONS PERFORMANCE & PHYSICAL
SPECIFICATIONS:
Legacy LAN Supported:
Network Management Protocol
Supported:
Maximum Separation Distance:
Maximum No. of LANs
Interconnected:
Maximum No. of MAC Entries
(Physical Connections):
Radio Signaling Rate:
User Data Throughput:
Frequency Bands:
Modulation Technique:
Encoding Scheme:
Spreading Factor:
Effective Radiated Power (ERP):
Receiver Sensitivity:
Bit Error Rate (BER):
Minimum Signal To Noise
Supporting Specified
Communications Reliability:
Transmitter Power Up Delay:
Ethernet Only
SNMP
1000ft. to 4752ft.
Point to Multipoint Hub
Inter-Connect: 5
<256 Ethernet Address Table
Entries/<62 Transceiver Units
16 Mbps (2 Independent 8 Mbps
Channels)
5.7 Mbps
Transmitter: 5.746 - 5.830 Gbps
Receiver: 2.400 - 2.4835 Gbps
Direct Sequence Spread
Spectrum
16 PSK with Trellis Encoding &
Forward Error Correction
32 Chips/Baud
1 Watts/Adaptive Power Ranging
from 0.02 mW to 650 mW for
Remote Hub
-85 dBm
10-6
COST:
Acquisition Cost:
Installation Cost:
Operations Cost:
Maintenance Cost:
Hub: $7,450.00, Software:
$995.00
POWER :
Voltage Operating Range:
Frequency Operating Range:
Phase:
Current (Average - Peak):
Battery Back-Up Operating
Time:
90VAC/250VAC
60Hz/50Hz
Single Phase Prime Power
6.0A/3.0A
N.A.
PHYSICAL
CHARACTERISTICS:
Physical Size:
Configuration:
Equipment Mounting
Compatibility:
Weight:
17"W x 17"D x 6"H to 16"W x
18"D x 5"H
19" Rack or Desktop Mounted
19" Rack Mount
Hub:
; Remote:
ENVIRONMENTAL:
Indoor/Outdoor Configurations
Indoor Only
Available:
0oC to +40oC
Operating Temperature Range:
Storage Temperature Range:
0% to 90% RH, Non-Condensing
Humidity Range (% Relative):
For Outdoor Configurations:
Rain Conditions Compatibility:
Snow Conditions Compatibility:
Ice Conditions Compatibility:
Sand/Dust Compatibility:
Salt Air/Corrosive Environment
ANTENNA CHARACTERISTICS:
Configurations Available:
Typical Coverage:
Temperature Range:
Humidity:
Wind:
Ice:
Gain (dBd):
Dimensions:
Max. Cable Length & No. of
Antennas per Hub:
Outdoor - Roof Mount
7o Horizontal, Vertically
Polarized
-30o to +70oC
100% RH
Survival: <100 MPH
1" Max. Radial Ice
9" x 7" x 12" or 24" Dish
100 ft. Cable w/Antenna or
100ft. Cable w/Distribution Unit
and <4 Antennas (Each w/50 ft.
Additional Cable)
WIRELESS HUB INTRA-BUILDING FULLY
DUPLEXEDCOMMUNICATIONS PERFORMANCE:
Legacy LAN Supported:
Ethernet Only
Network Management Protocol
SNMP
Supported:
263ft. (80M) Radius Coverage
Maximum Separation Distance:
Area in aTypical Office
Environment (Wall Board and
Steel Stud Construction)
Maximum No. of Wireless
Transceivers Interconnected
<62
with Hub:
Maximum No. of MAC Entries
<256 Users per Hub; <8 per
(Physical Connections):
Transceiver
Radio Signaling Rate:
16 Mbps (2 Independent 8 Mbps
User Data Throughput:
Channels)
Frequency Bands:
5.7 Mbps
Transmitter: 5.746 - 5.830 Gbps
Modulation Technique:
Receiver: 2.400 - 2.4835 Gbps
Encoding Scheme:
Direct Sequence Spread
Spectrum
Spreading Factor:
16 PSK with Trellis Encoding &
Effective Radiated Power (ERP):
Forward Error Correction
32 Chips/Baud
Receiver Sensitivity:
1 Watts/Adaptive Power Ranging
Bit Error Rate (BER):
from 0.02 mW to 650 mW for
Minimum Signal To Noise
Remote Transceiver
Supporting Specified
-85 dBm
Communications Reliability:
10-6
COST:
Acquisition Cost:
Maintenance Cost:
Installation Cost:
Operations Cost:
Transceiver & Interface Unit:
$1,775.00
POWER :
+5VDC/+12VDC/-5VDC
N.A.
N.A.
2A@+5VDC, 1A@+12VDC,
.5A@-5VDC
Voltage Operating Range:
Frequency Operating Range:
Phase:
Current (Average - Peak):
Battery Back-Up Operating
Time:
PHYSICAL CHARACTERISTICS:
Physical Size:
11"H x 7"W x 4"D
Configuration:
Desktop or Wall Mounted
Equipment Mounting
Compatibility:
Hub:
;
Weight:
Transceiver: 8 lbs.
ENVIRONMENTAL:
Indoor/Outdoor Configurations
Indoor Only
Available:
0oC to +40oC
Operating Temperature Range:
Storage Temperature Range:
0% to 90% RH, Non-Condensing
Humidity Range (% Relative):
For Outdoor Configurations:
Rain Conditions Compatibility:
Snow Conditions Compatibility:
Ice Conditions Compatibility:
Sand/Dust Compatibility:
Salt Air/Corrosive Environment
Compatibility:
ANTENNA CHARACTERISTICS:
Configurations Available:
Typical Coverage:
Temperature Range:
Humidity:
Wind:
Ice:
Gain (dBd):
Dimensions:
Max. Cable Length/No. Antennas
per Hub:
Indoor - Desktop/Wall
Mount/Ceiling
120o Horizontal, 60o Vertical
0o to 40o C
90% RH Non-condensing
Indoor: 10.5" x 7.5" x 18.5" Wall/Ceiling, 11" x 7" x 4" Desk/Wall or 16" Square Planar
100 ft. Cable w/Antenna or
100ft. Cable w/Distribution Unit
and <4 Antennas (Each w/50 ft.
Additional Cable)
WIRELESS BRIDGE INTER-BUILDING SIMPLEX
COMMUNICATIONS PERFORMANCE:
Legacy LAN Supported:
Ethernet & Token Ring
Network Management Protocol
SNMP, (Novell) IPX, TCP/IP,
Supported:
DECnet, XNS, SNA, IBM LAN
Server, Microsoft LAN Manager,
Banyan VINES, & 3Com
3+Open
Wireless Media Access Protocol:
CSMA/CA
Maximum Separation Distance:
800ft. to 15,840ft.(3 mi.) Max.
Maximum No. of LANs
Interconnected:
Maximum No. of MAC Entries
(Physical Connections):
Radio Signaling Rate:
User Data Throughput:
Frequency Bands:
2.0 Mbps
Transmitter: 902 - 928 Mbps
Receiver: 902 - 928 Mbps
Direct Sequence Spread
Spectrum
DQPSK
Modulation Technique:
Encoding Scheme:
Spreading Factor:
Effective Radiated Power (ERP):
Receiver Sensitivity:
Bit Error Rate (BER):
Minimum Signal To Noise
Supporting Specified
Communications Reliability:
Transmitter Power Up Delay:
200 - 250 mW
-72 dBm
10-6
24dBm
COST:
Acquisition Cost:
Installation Cost:
Operations Cost:
Maintenance Cost:
Ethernet Package (includes: 2
Bridges, Cables & Antennas):
$12,990;
Token Ring (includes: 2 Bridges,
Cables & Antennas): $13,990
Optional Antennas: $399 $2,995
POWER :
Voltage Operating Range:
Frequency Operating Range:
Phase:
Current (Average - Peak):
Battery Back-Up Operating
Time:
Power Failure Recovery:
Bridge: 145W @ 115/230VAC
Single Phase Prime Power
< 1 min.
PHYSICAL CHARACTERISTICS:
Physical Size:
<(4.3"H x 17.2"W x 16.2"D)
Configuration:
19" Rack or Desktop Mounted
Equipment Mounting
19" Rack Mountable
Compatibility:
Bridge: 13 - 20 lbs.
Weight:
ENVIRONMENTAL:
Indoor/Outdoor Configurations
Indoor Only
Available:
+10oC to +35oC/0oC to +40oC
Operating Temperature Range:
Typical
Storage Temperature Range:
Humidity Range (% Relative):
0% to 80% RH @ 36oC,
For Outdoor Configurations:
Non-Condensing
Rain Conditions Compatibility:
Snow Conditions Compatibility:
Ice Conditions Compatibility:
Sand/Dust Compatibility:
Salt Air/Corrosive Environment
WIRELESS INTRA-BUILDING, SIMPLEX COMMUNICATIONS
PC
ESCHELON PRODUCT PERFORMANCE SPECIFICATIONS:
Legacy LAN Supported:
Network Management Protocol
Supported:
Wireless Media Access Protocol:
User Data Throughput:
Frequency Bands:
Modulation Technique:
Encoding Scheme:
Spreading Factor:
Effective Radiated Power (ERP):
Receiver Sensitivity:
Bit Error Rate (BER):
Minimum Signal To Noise
Supporting Specified
Communications Reliability:
Transmitter Power Up Delay:
Maximum Separation Distance:
Maximum No. of MAC Entries
(Physical Connections):
Radio Signaling Rate:
Ethernet
Wireless Interconnect: SNMP
CSMA/CA
800ft. Max. (Questionable)
2.0 Mbps (Questionable)
Transmitter: 902 - 928 Mbps
Receiver: 902 - 928 Mbps
Direct Sequence Spread
Spectrum
DQPSK
200 - 250 mW
-72 dBm Typical
10-6 - Interconnect; PC
Performance is Less
24dBm
COST:
Acquisition Cost*:
LAN Interconnect: $2,499
ISA Slot:
$799
Parallel Port:
$699
PCMCIA Slot: $699
DES Encryption**:
$239
Lightning Arrestors:
$249
Installation Cost:
Operations Cost:
Maintenance Cost:
*Cost includes: hardware, cable,
antenna and software.
**Data Encryption Service
(DES) currently not available on
PCMCIA products.
POWER :
LAN
Interconnect:
PCMCIA Port
Device:
Voltage Operating
Range:
115 VAC
Frequency Operating
Range:
60 Hz
N.A.
Phase:
Single
N.A.
Current (Average Peak):
1.5 Amperes
300mW
Battery Back-Up/AC
Adaptor Ratings:
N.A.
N.A.
ISA Slot
Device:
-12V, 5V, 12V
PHYSICAL CHARACTERISTICS:
Physical Size:
Equipment Mounting
Compatibility:
Weight:
Configuration:
Parallel Port
Device:
-12V@200mA,
5V@1500mA,
12V@500mA
NICAD
battery/AC
adaptor
N.A.
Wireless Interconnect: <(2.63"H
x 10.87"W x 4.75"D); PCMCIA:
=(4.63"H x 0.81"W x 2.63"D);
Parallel: =(7.5"H x 2.5"W x
0.9"D); PC ISA Slot:=(3.9"H x
0.5"W x 13.3"D)
Wireless Interconnect: Desktop
or Wall Mounted; PCMCIA,
Parallel Port, PC ISA Port
Wireless Interconnect: 2.75 lbs.;
PCMCIA: 5.25 oz.; Parallel: 10.0
oz.; PC ISA: 0.65 lb.
ENVIRONMENTAL:
Indoor/Outdoor Configurations
Available:
Operating Temperature Range:
Indoor Only
Wireless Interconnect &
PCMCIA: 0oC to +54.4oC;
Parallel: 0oC to +46.1oC; PC
ISA: +10oC to +40oC
Storage Temperature Range:
Humidity Range (% Relative):
20% to 80% RH,
Maximum Dew Point:
Non-Condensing
For Outdoor Configurations:
PCMCIA: 25.56oC
Rain Conditions Compatibility:
Snow Conditions Compatibility:
Ice Conditions Compatibility:
Sand/Dust Compatibility:
Salt Air/Corrosive Environment:
PRODUCT RELIABILITY:
Product Reliability:
Mean Time Between Failure:
Reliability Determined By
(Applicable
Procedure/Specification):
MTTR Determined By
(Applicable
Procedure/Specification):
Fault Isolation To A Single
Failed Circuit
Board to % Confidence:
Fault Isolation To Two Failed
Circuit Boards to % Confidence:
Skill Level Required for Fault
Isolation:
Fault Tolerance (Option or
Inherent in Product, Areas
Covered):
Mean Time To Repair:
PCMCIA/Parallel Adaptor:
125,000 Hrs.PRODUCT
MAINTAINABILITY:
Construction For Maintainability:
Built-In Test Features:
Field Mean Time To Repair:
Shop Mean Time To Repair:
Special Test Equipment Required
To Support Maintenance:
Special Skills Required To
Support Maintenance:SAFETY:
Safety Features: