frequency plan _map info2

8/8/2019 Frequency Plan _map INFO2

1/17

ARFCNs ARFCNs

TCH = 87 to 106, TCH = 87 to 106,BCCH = 107 to 124BCCH = 107 to 124Use N key for nextUse N key for nextfrequency and P forfrequency and P forprevious frequency.previous frequency.


2/17

Te st Cas e Te st Cas e

F requency planning of JHEF requency planning of JHE--17081708It is a 4/4/4 site with 4 radios in each sector.It is a 4/4/4 site with 4 radios in each sector.

1 will be used for BCCH1 will be used for BCCH3 will be used for TCH3 will be used for TCH


3/17


4/17

Now concentrate on the sector A.Now concentrate on the sector A.F irst assign in BCCH frequency in the range of 107 to 124.F irst assign in BCCH frequency in the range of 107 to 124.


5/17

Press C and go to frequency 107 i.e. BCCH starting frequency.Press C and go to frequency 107 i.e. BCCH starting frequency.


6/17

R ed = Current frequency R ed = Current frequency Green = one frequency after the current ( R ed) frequency Green = one frequency after the current ( R ed) frequency Blue = one frequency before the current ( R ed) frequency Blue = one frequency before the current ( R ed) frequency


7/17

Now assign frequencies such that the coNow assign frequencies such that the co--channelchannelinterference and adjacent channel interferenceinterference and adjacent channel interferenceare as minimum as possible.are as minimum as possible.

Avoid giving same frequency to neighbor Avoid giving same frequency to neighborsectors and cells for minimizing cosectors and cells for minimizing co--channelchannelinterference.interference.


8/17

S uppose the sector A in green circle is to be assigned with a BCCH frequency then avoid the sameS uppose the sector A in green circle is to be assigned with a BCCH frequency then avoid the samefrequency in R ed circled sector but never assign the same frequency to sectors with crosses.frequency in R ed circled sector but never assign the same frequency to sectors with crosses.


9/17

F or sector A frequency 113 is chosen.F or sector A frequency 113 is chosen.


10/17

F requency 119 is assigned to sector B.F requency 119 is assigned to sector B.


11/17

D o the same for S ector C and for TCHD o the same for S ector C and for TCH

channels.channels.Press N for next and P for previousPress N for next and P for previousfrequency.frequency.D

o not assign the alternate frequencies toD

o not assign the alternate frequencies tosectors of a same site.sectors of a same site.


12/17


13/17

Click the label option and select label with BS IC or H S NClick the label option and select label with BS IC or H S N


14/17

BS IC range = 48 to 64BS IC range = 48 to 64

HSN range = 0 to 63H

SN range = 0 to 63

Write all the frequency plan to xls file in cell Write all the frequency plan to xls file in cell

plan 4plan 4 sent folder.sent folder.


15/17

GSM and DC SGSM and DC S

In D CS we have to take care of the following.In D CS we have to take care of the following.In D CS we dont have to assign BCCH.In D CS we dont have to assign BCCH.

The frequency range of D CS is from 630 to 660. The frequency range of D CS is from 630 to 660. We have to assign H S N1 same as H S N0 We have to assign H S N1 same as H S N0


16/17

S uppose we have a dual band antenna and the site configuration isSuppose we have a dual band antenna and the site configuration is2/2/2 G SM and 2/2/2 D CS2/2/2 G SM and 2/2/2 D CS

F or G SMF or G SM

B CCHB CCH T CH T CH

S ec tor 1S ec tor 1 11 1 +1 + (1 hopping)(1 hopping)

S ec tor 2S ec tor 2 11 1+1+ (1 hopping)(1 hopping)

S ec tor 3S ec tor 3 11 11(1 hopping)(1 hopping)


17/17

F or D CSF or D CS

T CH T CH B CCHB CCH

S ec tor 1S ec tor 1 22 00



frequency plan _map info2

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