Q. How to do improve the TCH assignment Success Rate of GSM Cells for ZTE equipment? What parameters to do change in order to improve this KPI
A. 1. We can gain better rates by changing Half Rate / Full Rate discrimination levels. Further more little amount of TCH congestion can be overcome by changing SDD time slot to TCH.
2. focus on removing tch congestion...chk for hardware issues.
3. Make sure that it is a radio issue sometimes can be abis interface congestion and we can also try increasing the RxLevAccessMin, it is the easiest way, but not necessarily the right one. First try to improve the RF environment through physical optimization
Jumat, 15 Juli 2016
Selasa, 05 Juli 2016
what is difference between TDD & FDD in LTE ?
Q: what is difference between TDD & FDD in LTE ?
A: In FDD, the uplink and downlink channels are placed on different frequencies and can be in operation at the same time - hence "frequency-divided". In TDD, the uplink and downlink channels are placed at the same frequency and operate at different times - hence "time-divided". In most respects the actual signalling and data exchange methods are the same, though TDD requires tight control over synchronisation in order to prevent uplink and downlink signals from clashing.
A: In FDD, the uplink and downlink channels are placed on different frequencies and can be in operation at the same time - hence "frequency-divided". In TDD, the uplink and downlink channels are placed at the same frequency and operate at different times - hence "time-divided". In most respects the actual signalling and data exchange methods are the same, though TDD requires tight control over synchronisation in order to prevent uplink and downlink signals from clashing.
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