Sidelink Resource Allocation via Single Message Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G NR wireless communication systems, sidelink communication between user equipment (UEs) faces inefficiencies due to the need for frequent interactions with base stations for resource allocation, leading to reduced data rates, capacity, and spectral efficiency, as well as increased power consumption.
Innovation Solution
A method where a UE receives a single message from the base station indicating both an initial and additional sidelink transmission opportunities, allowing it to retransmit data without further base station involvement, thus reducing the need for repeated communication for resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE frequently communicates with the base station for resource allocation after each failed sidelink transmission, then the reliability of resource allocation is improved, but the data rate and spectral efficiency deteriorate
Solution Approach 1:
The base station pre-allocates multiple sidelink transmission opportunities to the UE in advance, including both initial transmission resources and retransmission resources. This preliminary action eliminates the need for frequent UE-base station communications after transmission failures, thereby maintaining resource allocation reliability while improving data rate and spectral efficiency.
Solution Approach 2:
The UE is empowered to autonomously select and use pre-allocated retransmission opportunities without needing to request additional resources from the base station. This self-service capability reduces signaling overhead and base station involvement, thereby improving productivity while maintaining reliable resource allocation through the pre-configured opportunities.
2Manufacturing precision
If the UE frequently communicates with the base station for resource allocation after each failed sidelink transmission, then the resource allocation accuracy is improved, but the spectral efficiency deteriorates
Solution Approach 1:
The base station performs preliminary resource allocation by providing the UE with a set of pre-configured sidelink transmission opportunities including retransmission resources. This advance planning ensures accurate resource allocation without requiring subsequent communications, thereby maintaining allocation accuracy while improving spectral efficiency by reducing signaling overhead.
Solution Approach 2:
The retransmission resource allocation function is extracted from the continuous UE-base station communication loop and consolidated into a single preliminary allocation message. This separation allows the base station to provide accurate resource allocation in advance, while the UE independently manages retransmissions, thereby improving spectral efficiency without sacrificing allocation accuracy.
3Reliability
If the UE frequently communicates with the base station for resource allocation, then the resource allocation reliability is improved, but the power consumption deteriorates
Solution Approach 1:
The base station provides all necessary sidelink transmission and retransmission opportunities in a single preliminary allocation message. This eliminates the need for repeated UE-base station communications that would consume additional power, thereby maintaining resource allocation reliability while significantly reducing power consumption.
Solution Approach 2:
The UE autonomously manages its sidelink communications by selecting from pre-allocated opportunities without needing to contact the base station for each retransmission. This self-service approach maintains reliable resource allocation through the pre-configured opportunities while minimizing power consumption by eliminating frequent signaling transmissions.
4Reliability
If the base station provides additional sidelink resources after each failed transmission, then the communication reliability is improved, but the device complexity increases
Solution Approach 1:
The base station consolidates the allocation of multiple sidelink transmission opportunities including retransmission resources into a single preliminary message. This simplifies the communication protocol by eliminating the need for complex iterative request-response exchanges, while maintaining communication reliability through the pre-allocated retransmission opportunities.
Data Source
AI summary
This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for wireless communication, including techniques for sidelink resource allocation and communication. In some aspects, a user equipment (UE) may receive from a base station a single message that indicates a first transmission opportunity for transmission of information from the UE to a second UE and that indicates one or more additional transmission opportunities for at least one subsequent transmission of information from the UE to the second UE. The UE may transmit the information to the second UE in the first transmission opportunity. The UE may also retransmit the information to the second UE in at least one of the one or more additional transmission opportunities responsive to the transmission of the information in the first transmission opportunity being unsuccessful. Other aspects and features are also claimed and described.