MICOM 3

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Micom-ALE STD Enhancements
Yehuda Eder VP RD MOBAT A Tadiran
Communications Division
MAY 2003
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Micom-ALE STD Enhancements

• Micom Multi-Net operation
• Scanning simultaneously up to 20 different nets
• ACS-Adaptive Customize Signalization
• New calls
• Extended DBM
• GPS information over AMD
• Bi-directional LQA exchange with link on the best
  channel in real time

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Micom ALE Net Per MIL STD188-141B

• Net (up to 20) Parameters
• Group of selectable scanned channels (up to
  100)
• 2 or 5 scan channels per second
• Self (personal) address
• Other sites addresses directory
• Associated with Net addressing with net
  members
• Timing function for individual and all type of
  net and group calls.
• Tswt- Slot Wait Time (slot time information for
  group/net calls handshake).
• Calling time Ta (Ta m x Trw address length),
  Td (dwell time 5p/c or 2p/c) ......

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NET Setting
Both NETS can not interoperable simultaneously
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Micom Multi-Net operation

• Scanning multiple NETs (up to 20) simultaneously
• (as an enhanced of MIL-STD188-141B)
• Enhanced System configuration
• Data Relay between NETS

Auto timing calculation Ta m x Tnw
(automatically according to net selection) Td
min (7 x 500mSec 10 x 200mSec) 2c/s,
5c/sradio is switching the scanning rate between
nets Auto Tswt calculation
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ACS-Adaptive Customize Signalization
TO A
TO A
TO A
FROM B

• Sounding and Calling optimization
• Links between different networks configurations
• Signalization length Setting by system designer
• Links between Single NETS and Multi-Nets radios
• Sounding in group sequence
• Skipping Sounding cycle
• NULL Addresses to adapt timing for safe
  interoperability

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MIL-STD188-141B NEW ALE CALLS

• ALL CALL
• Emergency Call
• NET CALL
• Prearranged NET calls
• GROUP CALL
• Adaptive/on line Group Call with slot time
  handshake
• ANY CALL
• General broadcast call with responses with a
  common prefix address
• WILD-CARD
• General broadcast call with responses with a
  common address characters
• SELF CALL
• For maintenance and sounding

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Slot time Auto Calculation
In Net Call and Group Call the radio is calculate
the slot time (SWT) to answer automatically
Tack14Tw17Tw14TwNS
To NET/GROUP
This is A
Slot-0
Tcc dwell time
To A This is Z 14Tw1829.33mSec
Slot-1
To A This is B001 17Tw2221.3mSec
Slot-2
To A This is C01 14Tw1829.33mSec
For Net Call and Group Call the operator is
setting the timing calculation manually and set
the radio with the timing parameters. Micom ALE
is calculating the timing automatically ,the
operator needs to define only the slot time order
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Extended DBM

• Data Block Message
• Fully buffered at the radio (saving the
  message , file)
• Deep interleaver supporting penetration of
  long
• fades and large noise bursts
• Typing messages via external terminal
• or by using the integrated radio keyboard
• Messages will be displayed on data terminal
• or radio display
• Maximum size , bits 261660
• Data capacity , ASCII 37377
• Block size Transmission , bits 588

USB Connection For external keyboard
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Micom-GPS GPS information over AMD

• Auto device detection
• NMEA AND TSIP protocols

GPS
Data Display in LLA format
Data Display in ECEF format
Device info
Time display
Choose format
Position data display in 2 formats User
programmable
LLA/ENU Position Latitude, Longitude,
Altitude. Latitude and Longitude in degrees.
Altitude in meters Velocity East, North, Up, in
meters/sec
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Micom-GPS GPS information over AMD
ECEF (Earth-Centered, Earth-Fixed) Position X,
Y, Z, in meters Velocity dX, dY, dZ, in
meters/sec
Exact (Satellite) Time display (GPS time, or UTC
time) Secure Polling and Pushing radio location
The secure type will be defined in
application level with the customer Possibility
to send/request position data to/from remote
radio, using AMD message, Send coordinates in
NMEA format with emergency call.
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• Bi- directional Handshake
• The bi- directional handshake is a shortcut
  procedure to exchange LQA scores with other
  stations in the system with or without
  establishing a link.
• This procedure is useful in the following cases
• The radio has only recently been switched on.
• To update the LQA scores before initiating a
  call.
• When a new or passive station joins to the
  system.
• In case of sudden atmospheric changes.
• Networks without auto-sounding.

LQA
The best way to save sounding cycles
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Summary Recommendations

• We presented the MICOM -2,3
• A commercial radio that meets the ALE MIL STD
  188-141B with enhanced features.
• Multi-Net as a gateway between networks
• Data applications over the AMD
• Bi-directional function may save sounding
  air time
• Our recommendations to add to MIL STD188-141B
• Multi-Net
• Bi- directional Handshake

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Thank You
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