Nokia Net Monitor description (DCT3)

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Test 42 – Intra-cell Handover Counters (dualband phone)

Available in: 2100, 3330, 6150, 6210, 7110, 8210, 8250

This test displays statistics for intra-cell handovers, that is, handover during dedicated mode (call) between different channels within the current cell. This test only appears in dual-band phones.

Test screen	Help screen

IntraOK G>G: Number of successful intra-cell handovers within the GSM900 band

IntraOK D>D: Number of successful intra-cell handovers from within the GSM1800 band

IntraOK G>D: Number of successful intra-cell handovers from the GSM900 band (old cell) to the GSM1800 band (new cell)

IntraOK D>G: Number of successful intra-cell handovers from the GSM1800 band (old cell) to the GSM900 band (new cell)

Maximum value of successful counters is 9999.

IntraHOFail G>G: Number of failed intra-cell handovers from within the GSM900 band

IntraHOFail D>D: Number of failed intra-cell handovers from within the GSM1800 band

IntraHOFail G>D: Number of failed intra-cell handovers from the GSM900 band (old cell) to the GSM1800 band (intended new cell)

IntraHOFail D>G: Number of failed intra-cell handovers from the GSM1800 band (old cell) to the GSM900 band (intended new cell)

Maximum value of failed counters is 999.

BackToPrev G>G: Number of successful intra-cell returns to previous channel from within the GSM900 band.

BackToPrev D>D: Number of successful intra-cell returns to previous channel from within the GSM1800 band.

BackToPrev G>D: Number of successful intra-cell returns to previous channel from the GSM900 band (old cell) to the GSM1800 band (new (original) cell)

BackToPrev D>G: Number of successful intra-cell returns to previous channel from the GSM1800 band (old cell) to the GSM900 band (new (original) cell)

The ‘return to previous’ handover is where the MS fails to connect on the new channel and re-establishes communication on the previous channel, hence maintaining the connection. Maximum value of return to previous channel counters is 999.

When one of the counters reaches the maximum value, the counters (all?) will stop.

It can be seen, that intra-cell handovers do not occur frequently.

These counters can be reset to 0 with “Test 40 – Reset Handover Counters” or “Test 60 – Reset Field Test Counters”.

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