Multi-Relay Sidelink AGC Timing Using Quasi-Colocation
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in relay techniques for multi-relay sidelink communications, particularly in identifying quasi-colocation relationships and performing automatic gain control measurements in multi-relay scenarios.
Innovation Solution
The implementation of quasi-colocation relationships and automatic gain control determination methods for multi-relay sidelink communications, where a remote UE identifies control and data regions to perform automatic gain control measurements, allowing for improved signal reception from multiple relay UEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If relay techniques are used for multi-relay sidelink communications, then coverage is extended and connectivity is improved, but signaling overhead increases and measurement precision deteriorates due to difficulty in identifying quasi-colocation relationships
Solution Approach 1:
The base station performs preliminary configuration by signaling QCL assumptions and AGC measurement opportunities to relay UEs before actual data transmission. This pre-configuration enables relay UEs to automatically determine measurement timing and QCL relationships without requiring additional dynamic signaling during operation, thus extending coverage while controlling signaling overhead.
Solution Approach 2:
The patent introduces QCL relationships as an intermediary concept that connects control regions and data regions across multiple relay paths. By defining QCL assumptions between reference signals in control regions and data regions, the system enables indirect measurement of channel characteristics without direct signaling between all components, reducing overall signaling overhead.
2Reliability
If automatic gain control measurements are performed on multiple relay paths, then signal reception quality improves, but measurement precision deteriorates due to difficulty in identifying appropriate symbol periods
Solution Approach 1:
The base station signals AGC measurement opportunities in advance, specifying which symbol periods should be used for AGC measurements on each relay path. This preliminary indication ensures that relay UEs measure channel characteristics during appropriate time intervals before data reception, improving both reception quality and measurement precision by eliminating ambiguity about when to perform measurements.
Solution Approach 2:
The patent segments the time interval into distinct control regions and data regions, with specific symbol periods designated for AGC measurements on individual relay paths. By dividing the measurement process into separate, clearly-defined segments for each relay, the system enables precise measurements on multiple paths without interference or confusion about which symbols to measure.
3Productivity
If multiple relay UEs transmit data simultaneously, then productivity increases through parallel communications, but device complexity increases due to need for tracking multiple QCL relationships
Solution Approach 1:
The patent applies universal QCL assumptions that can be used across multiple relay paths and data regions. By defining QCL relationships between control regions and multiple data regions using the same reference signals and assumptions, the system enables relay UEs to handle multiple simultaneous transmissions with a unified measurement approach, increasing productivity while managing device complexity through standardized procedures.
Data Source
AI summary
Methods, systems, and devices for wireless communication at a remote user equipment (UE) are described. A remote UE may identify a quasi-colocation relationship between one or more control regions of resources during a time interval and a set of data regions of the resources during the time interval. In some examples, the set of data regions may include at least a first data region for a first relay UE and a second data region for a second relay UE. The remote UE may identify, according to the quasi-colocation relationship, one or more symbol periods for one or more automatic gain control measurements. The remote UE performs the one or more automatic gain control measurements on signals received in the one or more symbol periods and receive a first data message in the first data region and a second data message in the second data region.