Uplink and Sidelink Data Rate Sharing Under UE Rate Limits
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Solution Overview
Problem
Existing wireless communication systems, particularly in 5G, face challenges in efficiently managing data rates across multiple interfaces, leading to potential violations of maximum data rate conditions when user equipment (UE) communicates over Uu and sidelink channels.
Innovation Solution
The UE determines a total data rate for concurrent communications across multiple interfaces, considering different network operators, cells, and bandwidth parts, and compares it to a threshold to decide on decoding and encoding operations, while the access point ensures the maximum data rate condition is not exceeded by configuring resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE communicates concurrently over multiple interfaces (Uu and sidelink), then the communication versatility and data throughput are improved, but the maximum data rate condition may be violated leading to unreliable communication
Solution Approach 1:
The base station determines the total data rate across all interfaces and provides feedback to the UE about whether the maximum data rate condition is satisfied. This feedback mechanism allows the system to monitor and adjust communications to maintain reliability while enabling multi-interface operation.
Solution Approach 2:
The base station performs preliminary determination of whether the maximum data rate condition will be satisfied before allowing concurrent communications to proceed. This preliminary check prevents data rate violations by proactively identifying and preventing problematic communication configurations.
2Loss of information
If the UE decodes all downlink communications regardless of data rate, then no data is lost, but the processing complexity and energy consumption increase
Solution Approach 1:
The UE performs selective decoding based on the determined data rate. When the maximum data rate condition is not satisfied, the UE skips decoding operations for certain downlink communications. This partial action approach prevents unnecessary processing while managing information loss according to system constraints.
3Productivity
If the UE transmits uplink communications at maximum data rate, then the uplink throughput is optimized, but the total data rate across multiple interfaces may exceed the threshold
Solution Approach 1:
The base station monitors the total data rate across all interfaces and provides feedback to the UE about uplink transmission conditions. This feedback enables the UE to adjust its uplink transmission rate to maintain compliance with the maximum data rate condition while optimizing throughput within available capacity.
Solution Approach 2:
The uplink data rate is dynamically adjusted based on the determined total data rate and maximum data rate condition. When the condition is satisfied, the UE can transmit at higher rates; when not satisfied, the UE reduces its uplink rate. This dynamic adjustment maintains reliability while maximizing productivity under current conditions.
Data Source
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AI summary
Some aspects described herein relate to considering data rates of multiple interfaces in determining whether to decode communications received over the interfaces and/or to considering the multiple interfaces in determining parameters for granting resources for one or more of the interfaces.