Mobile Communication System

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Across
  1. 2. Directional antennas are used in cellular systems for ________.
  2. 4. A group of cells using different sets of frequencies is called a ________.
  3. 7. GSM stands for Global System for ________.
  4. 11. SMS sent to all users in a particular area uses ________ Broadcast
  5. 12. The commonly used ideal shape of a cellular cell is ________.
  6. 13. BTS stands for Base Transceiver ________.
  7. 15. Dividing a congested cell into smaller cells is called cell ________.
  8. 17. Fluctuation in the received signal strength is called ________.
  9. 18. The main switching component in the GSM network is ________.
  10. 19. The GSM component that controls multiple BTSs is called ________.
Down
  1. 1. Using the same frequency in another cluster is called frequency ________.
  2. 3. The GSM database that stores permanent subscriber information is called ________.
  3. 5. GSM uses ________ Access to allow multiple users to share the radio channel.
  4. 6. A dominant signal component is present in ________ distribution.
  5. 8. HLR stands for Home ________ Register.
  6. 9. Erlang B gives the probability of a call being ________.
  7. 10. The GSM channel used for carrying user voice is called ________ channel.
  8. 12. The process of transferring an ongoing call from one cell to another is called ________.
  9. 14. As the frequency reuse distance increases, S/I generally ________.
  10. 16. Authentication verifies the ________ of a subscriber.