Compressed Location Reporting

This document describes our Compressed Location Reporting.

• We addressing this feature as open standard for positioning.
• No remote triggering
• Fully based on existing open standards

Warning

This specification is not compatible with Hytera Compressed Location Report or Motorola CSBK Location Report.

Specification

• One-way messages without confirmation from application
• DMR radio should use confirmed or unconfirmed data transmission
• DMR radio should use ETSI service application IDs of UDP/IP header compression or IP-based data (see ETSI ETSI TS 102 361-1, 9.3.18)
• UDP datagram should use source and destination ports of 10111 (next number after reserved for NMEA by IANA)
• Each UDP datagram should contain one location record
• Location record is a set of values, packed using open serialization format MessagePack
• Record should contain following fields (listed in order of placement):
  • Latitude in degrees (float)
  • Longitude in degrees (float)
  • Altitude in meters (int) or NIL
  • Speed in knots (int) or NIL
  • Course in degrees (int) or NIL