What Is AISU?
An Antenna Information Sensor Unit (AISU) is a device usually installed on top of a base station antenna. It mainly consists of GNSS antennas…
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What is TMA
A tower-mounted amplifier (TMA) is deployed on the top of a tower to amplify uplink signals. Figure 1 and Figure 2 show the installation…
Read articleWhat Is AISG?
Antenna Interface Standards Group (AISG) The Antenna Interface Standards Group (AISG) is both an organization and a protocol that defines communication standards between the…
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What is AHR? Adaptive High Resolution
The Adaptive High Resolution (AHR) solution is designed for massive MIMO scenarios and uses advanced multi-antenna algorithms. It enhances both user experience and system…
Read articleVoLTE Semi Persistent Scheduling and Power Control
To enhance capacity in VoLTE, semi-persistent scheduling and power control is implemented. When dynamic scheduling is used for voice services, the time-frequency resources or…
Read articleOverview of Dynamic Scheduling for VoLTE
Dynamic scheduling helps the LTE network assign radio resources to users based on real-time needs. This method is important for services like VoLTE, which…
Read articleVoLTE Speech Codec Scheme and Speech Traffic Model
VoLTE uses the adaptive multi-rate (AMR) or enhanced voice services (EVS) speech codec scheme. VoLTE Speech Codec Scheme AMR AMR is an audio data…
Read articleROHC in VoLTE
Robust Header Compression (ROHC) is used in mobile networks to make voice data packets smaller by compressing their headers. This helps reduce the load…
Read articleVoLTE Background
Providing voice service is a key part of any mobile network. In LTE, there are three main ways to support voice calls: using dual-standby…
Read articleCSFB UTRAN EventB1 RSCP Trigger Threshold: LTE Parameter Optimization
The CSFB UTRAN EventB1 RSCP Trigger Threshold defines the RSCP value required for UEs to trigger Event B1 during Circuit-Switched Fallback (CSFB) to UTRAN.…
Read articleCSFB UTRAN EventB1 ECN0 Trigger Threshold
The CSFB UTRAN EventB1 ECN0 Trigger Threshold parameter defines the Ec/No threshold that determines when a UE reports a UTRAN cell for Circuit Switched…
Read articleCSFB UTRAN EventB1 Time To Trigger: LTE RF Parameter Optimization
Circuit Switched Fallback (CSFB) is crucial for enabling voice services in LTE networks by redirecting the UE to a 3G network (UTRAN). The CSFB…
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