in Computer Networks recategorized
4,500 views
1 vote
1 vote

In a typical mobile phone system with hexagonal cells, it is forbidden to reuse a frequency band in adjacent cells. If 840 frequencies are available, how many can be used in a given cell?

  1. 280
  2. 210
  3. 140
  4. 120
in Computer Networks recategorized
4.5k views

1 Answer

3 votes
3 votes
Best answer

I think A

Hexagonal cells means

Each cell has six neighbors.

If the central cell uses frequency  A, its six neighbors can use B, C, B, C, B, and C  respectively.

In other words, only 3 unique cells are needed. 

  Consequently, each cell can have 840/3= 280 frequencies.

selected by
by
Answer:

Related questions