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SDCCH Traces

Author/ Email: Author's name/Author's emailVersion: V1.0(20YYMMDD)

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 2

CELL TRACE RECORDING FOR CELL BK2891B

Majority of influencing causes on SDCCH channel seen primarily on • Invalid Cause during Assignment procedure (i.e. fail in assignment)• T200 Timer expire on Layer2• Too many measurement generations missing from MS/BTS and drop (probable RLINKT

expiry)

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 3

CELL TRACE RECORDING FOR CELL BK2454A

Majority of influencing causes on SDCCH channel seen primarily on • Invalid Cause during Assignment procedure (i.e. fail in assignment)• Too many measurement generations missing from MS/BTS and drop (probable RLINKT

expiry)

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 4

BSC Trace for BSPSI05

Two major causes seen from the BSC traceImmediate Assignment Failed and T200 timer expiry(Layer 2 error)

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