Wireless Technology Comparisons

1

• Wireless Technology Comparisons
• Steve Hodges

shodges_at_telemetric.net 208.658.1292
2
Wireless Technologies for DA

• 1-2 Way Paging
• Satellite
• CDPD (Cellular Digital Packet Data)
• Private Radio
• Cellular Digital Control Channel

3
Paging One-Way and Two-Way

• Flex (One-Way), ReFlex (Two-Way)
• One-Way coverage is widespread Two-Way coverage
  is limited
• 10 - 100 character message
• Latency can be several minutes
• Growth is expected to decline
• One-way good for limited control, two-way for
  monitoring, control and status

4
SkyTel Coverage
5
Satellite

• Two way communications up to 9600 bps
• Excellent geographic coverage for outdoor
  applications
• Latency can be several minutes
• Costs are high radios 1000, airtime 20 plus
  usage
• Good fit for mobile asset management such as
  tracking rail cars, ships and very remote assets

6
Cellular Digital Packet Data (CDPD)

• Originally for Public Safety Organizations
• Packet Switched (up to 19.2 kbps)
• Schedule data packets to unused voice channels
• Pay base monthly fee, and then per packet
• Coverage is limited to major metro areas
• Best for bursty short data streams, such as
  remote trouble shooting
• Growth is expected to decline

7
CDPD (Verizon) Coverage
8
Cellular Digital Control Channel

• Data Control Channels for the Public Cellular
  Network
• Widespread coverage in North America, both
  digital and analog areas
• Very low cost, small data packets
• Near real time communications, two-way
• Utilizes existing infrastructure
• Ideal application where small amounts of data are
  sent infrequently, such as for alarms, basic
  monitoring, status, control

9
Control Channel Coverage
10
Ratio Bandwidth to Coverage/Price
Perfect Solution
High
Paging
CDPD
Satellite
Private Radio
Bandwidth
Control Channel
Low
High
Coverage/Price Ratio (Equipment and Service
Price) to Coverage
11
Comparative Technologies
Application developers like Telemetric provide
solutions around the technologies and the
wireless radios.
12
How Telemetric Works
External IED, RTU, Sensor
Monitor/ Control Equipment Anywhere
Nearest Cell Tower
MicroRTU, DNP-RTM
13
www.telemetric.net 208.658.1292