Configured Grant Sidelink Reception for 5G Power Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G wireless networks, the constant monitoring of control channels by receiver nodes for sidelink data reception consumes significant power, as they do not know when resources will be sent, leading to inefficient energy usage and potential delays in data transmission.
Innovation Solution
Implementing a configured grant system where a local manager node or UE sends signals to both the transmitter and receiver nodes to specify the channel and time for data transmission, allowing the receiver to monitor only the designated channel and reducing unnecessary power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If receiver nodes constantly monitor control channels for sidelink data reception, then data reception reliability is improved, but power consumption increases significantly
Solution Approach 1:
The network node performs preliminary action by configuring and signaling the receiver node about future data transmission times and channels before the actual data reception occurs. This allows the receiver to be pre-informed of when to activate monitoring, eliminating the need for continuous monitoring while ensuring reliable data reception at the scheduled times.
Solution Approach 2:
The system implements periodic action through configured grants that establish regular scheduling patterns for data transmission. The receiver node monitors control channels periodically at predetermined intervals rather than continuously, which maintains data reception reliability while significantly reducing power consumption by keeping the receiver in a lower-power state between periodic monitoring cycles.
2Productivity
If receiver nodes constantly monitor control channels, then data transmission efficiency is improved, but energy usage becomes inefficient
Solution Approach 1:
The network node performs preliminary configuration and signaling to inform the receiver node of future data transmission schedules. This preliminary action eliminates the need for continuous monitoring, allowing the receiver to efficiently transition between active monitoring periods and low-power states, thereby improving energy efficiency while maintaining data transmission productivity through reliable scheduled reception.
Solution Approach 2:
The system employs periodic monitoring at predetermined intervals configured by the network node. This periodic action pattern allows the receiver to maintain data transmission efficiency by being ready at scheduled intervals while avoiding the energy waste of continuous monitoring, achieving an optimal balance between productivity and energy consumption.
3Reliability
If receiver nodes monitor all channels continuously, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The network node performs preliminary configuration to specify exact channel assignments and timing information for data transmissions. This preliminary action simplifies the receiver's monitoring complexity by providing clear, predetermined instructions on which channels to monitor and when, eliminating the need for continuous omnichannel monitoring while maintaining communication reliability through structured scheduling.
Solution Approach 2:
The system implements periodic monitoring at predetermined intervals with specific channel assignments provided by the network node. This approach reduces device complexity by replacing continuous omnichannel monitoring with targeted periodic monitoring at specific channels and times, while maintaining communication reliability through the configured grant mechanism that ensures data is transmitted and received at the scheduled intervals.
Data Source
AI summary
During a sidelink process, a configured grant can be utilized for data reception. For example, one user device (e.g., gnodeB or local manager user equipment) can send a signal to a receiving UE indicating that the user device should monitor a specific channel for a specific time. The user device can then send another signal to a transmitting user equipment indicating that it needs to transmit on a specific sub channel at the specific time or window of time. Thus, the user device can facilitate scheduling of data transmissions/receptions such that radio resources are preserved.