【資料名稱】：Overview of AMR Progressive Power Control

【資料作者】：NSN

【資料日期】：2012-05-09

【資料語言】：英文

【資料格式】：PDF

【資料目錄和簡介】：

Overview of AMR Progressive Power Control
With the current power control algorithm, voice quality and dropped call rate cannot be
optimised at the same time. This means that the received signal quality (RXQUAL)
thresholds have to be selected so that a trade-off between voice quality and system
capacity is achieved.
AMR Progressive Power Control (PPC) provides a mechanism to change the RXQUAL
thresholds for AMR calls depending on the used power level. In other words, it is
possible to favour power increase with low power levels and avoid it with higher power
levels, thereby reducing overall interference.
AMR PPC (BSS20776) is a licence key controlled software product that consists of two
separately controlled functionalities:
• AMR PPC for MS power control (uplink)
• AMR PPC for BTS power control (downlink)
If the licence expires, the normal power control algorithm is used also for AMR calls.
Benefits of AMR Progressive Power Control
• reduced interference in the network because of better power distribution
• better speech codec distribution because of better quality distribution
• reduced dropped call rate
Related topic
Descriptions
• Enhanced Speech Codecs: AMR and EFR
• RF Power Control and Handover Algorithm
• Licence Management in BSC
Instructions
• Activating and Testing BSS20776: AMR Progressive Power Control
Reference
• EE - Base Station Controller Parameter Handling in BSC
• 111 AMR Progressive Power Control Measurement
• BSS Radio Network Parameter Dictionary