Cisco Bug: CSCsz20369 - UL Throughput drops after performing online calibration
Dec 28, 2016
- Cisco BWX 8300 Series Broadband Wireless Access System
Known Affected Releases
Symptom: After GCT is synced up and UL MGEN is started it is ibserved that the CPE works with 16QAM 3/4 and easily acheives 2Mbps data rate, ,but in this scenario when multiple online calibrations are performed occasionally we see that the traffic drops to 650 knbps with modulation fixed to QPSk 1/2. Conditions: This is primarily due to the fact that RSSIMaxDelta value has been set to 0 in L2, when this scenario is reproduced we see that the Normalised RSSI is -32db, and teh CINR around 7-8 db. On one specific BTS we see the Noise floor to be hgher and teh UL CINR never exceeded beyond 8 db for QPSK 1/2.
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