Cellular Systems Crossword Puzzle

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Across
  1. 4. - All-IP 4G core network
  2. 9. - Network Operators provide this to customers
  3. 11. - Regulates spectrum allocation
  4. 12. Group of cells using unique frequency set
  5. 13. Using same frequencies in different cells
  6. 15. - 1G cellular technology was ______
  7. 16. - 2G digital standard with SIM cards
  8. 17. - Process of transferring calls between cells
  9. 19. - Mobile registration phase
Down
  1. 1. - Companies making mobile phones
  2. 2. - Cellular ______ includes all players
  3. 3. - Companies creating mobile apps
  4. 5. - 2.5G introduced ______ data
  5. 6. - 5G enables network ______
  6. 7. - Database storing subscriber info
  7. 8. - Manages multiple BTS units
  8. 10. - D/R ratio determining interference
  9. 13. - Channel assignment method with fixed allocations
  10. 14. - 3G technology using W-CDMA
  11. 18. - Dynamic channel assignment type