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Junior Member
Reputation: 11
2G Frequency Issue
Dears,Recently we did Frequency plan for 2G and take some channels for U900. After FP change in drive test (Idle, Dedicated) still we can see ARFCN in neighbor with good levels which already taken for U900.If we lock that ARFCN UE goes in no service mode. Kindly suggest where is mistake possibilities.
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2019-07-18 11:54 PM
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Member
Reputation: 270
Re: 2G Frequency Issue
Which type of frequency hopping is used in your network?
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Senior Member
Reputation: 491
Re: 2G Frequency Issue
![Quote](images/misc/quote_icon.png)
Originally Posted by
Mirzaatif
After FP change in drive test (Idle, Dedicated) still we can see ARFCN in neighbor with good levels which already taken for U900.If we lock that ARFCN UE goes in no service mode. Kindly suggest where is mistake possibilities.
Audit all 2G TRX frequencies and check do you still have U900 ARFCN assigned to GSM?
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VIP Member
Reputation: 1934
Re: 2G Frequency Issue
Hi, Mirzaatif!What is your problem, you can further explain.I made a frequency plan for GSM900 / 1800, UMTS900 / 2100.On a dedicated band to a telecom operator in the GSM900 / 1800 rangeused synthesized hopping. MAL LIST, MAIO and others were created.I can help you.
![Quote](images/misc/quote_icon.png)
Originally Posted by
Mirzaatif
Dears,Recently we did Frequency plan for 2G and take some channels for U900. After FP change in drive test (Idle, Dedicated) still we can see ARFCN in neighbor with good levels which already taken for U900.If we lock that ARFCN UE goes in no service mode. Kindly suggest where is mistake possibilities.
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Junior Member
Reputation: 11
Re: 2G Frequency Issue
Its set as default, Hopping Channel: Yes
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Member
Reputation: 270
Re: 2G Frequency Issue
I think your problem is this: you’re using rf hopping. You’ve changed the TRX frequencies but didn’t update the MAL lists. If it’s not your case, please let us know more details and we can help you.
![Quote](images/misc/quote_icon.png)
Originally Posted by
Mirzaatif
Its set as default, Hopping Channel: Yes
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