Sidelink AGC Configuration Reuse for Throughput Optimization
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in automatic gain control (AGC) for sidelink transmissions due to repeated training symbols, which increase overhead and reduce throughput.
Innovation Solution
Implementing a method where a receiving UE determines an AGC configuration based on prior transmissions, reusing settings for subsequent slots and transmissions when transmit power is constant, allowing the reuse of AGC configurations and eliminating the need for dedicated training symbols in each slot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repeated training symbols are used for AGC in sidelink transmissions, then AGC reliability is improved, but overhead increases and throughput decreases
Solution Approach 1:
The patent applies preliminary action by performing AGC training once at the beginning of a message transmission sequence. The receiving UE determines an AGC configuration based on a training transmission, and then reuses this configuration for subsequent transmissions within the same message, eliminating the need for repeated training symbols and thereby increasing throughput while maintaining reliability.
Solution Approach 2:
The patent implements universality by making the AGC configuration determined from training transmissions applicable across multiple subsequent transmissions. A single AGC configuration serves multiple transmission instances within a message, reducing overhead and allowing the system to achieve both reliable AGC and high throughput.
2Measurement precision
If dedicated training symbols are included in each slot, then AGC measurement precision is improved, but resource overhead increases
Solution Approach 1:
The patent performs AGC measurements in advance during dedicated training transmissions at the beginning of a message. The receiving UE determines the AGC configuration once beforehand, and then reuses it for all subsequent transmissions in the message, eliminating the need for continuous training symbols and reducing resource overhead while maintaining measurement precision.
Solution Approach 2:
The patent discards the need for repeated training symbols in subsequent transmissions after the initial AGC configuration is established. By recovering and reusing the initially determined AGC configuration across multiple transmissions, the system reduces overhead without sacrificing measurement accuracy.
3Adaptability or versatility
If AGC configuration is determined for each transmission, then adaptability is improved, but system complexity increases
Solution Approach 1:
The patent determines the AGC configuration once in advance at the beginning of a message transmission sequence. This preliminary determination is then reused for all subsequent transmissions within the same message, reducing the computational complexity of repeatedly determining AGC configurations while maintaining adaptability through the initial training phase.
Solution Approach 2:
The patent creates a universal AGC configuration that applies to multiple transmissions within a message. This single configuration serves multiple transmission instances, reducing system complexity by eliminating the need for separate AGC determination for each transmission while maintaining adaptability through the initial training process.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A scheduling device may indicate that a transmit power remains constant for a duration of time. A transmitting user equipment (UE) may transmit reference signals on dedicated resources for automatic gain control (AGC) training. As the transmit power from the transmitting UE may remain constant, a receiving UE may determine an AGC configuration for current and subsequent transmissions based on measurements made on the dedicated resources. By using a prior transmission to determine an AGC configuration for a current transmission, a training symbol may not be included in each slot. A symbol formerly used for AGC training in the current transmission may be used to carry sidelink information.