Sidelink Resource Selection Scaling Factor
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing sidelink resource selection for device-to-device communication in wireless communication networks, particularly in next-generation 5G networks, where resource reservation and transmission opportunities need to be optimized for high data throughput and low latency.
Innovation Solution
A method and apparatus for a first device to configure a sidelink resource pool with reserved periods, select a reserved period, and randomly determine transmission opportunities based on a scaling factor derived from the largest reserved period, enabling efficient sidelink transmission by optimizing resource reservation and selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resource reservation is enabled for different Transport Blocks in sidelink resource pool, then transmission reliability is improved, but resource allocation complexity increases
Solution Approach 1:
The resource pool is segmented into multiple reserved periods, with each period dedicated to specific Transport Blocks. This segmentation allows different TBs to be assigned to specific time intervals, improving transmission reliability through dedicated resources while managing complexity by organizing allocations in structured segments rather than requiring complex dynamic scheduling for all TBs simultaneously
Solution Approach 2:
Resources are reserved in advance for different Transport Blocks before actual transmission occurs. By pre-allocating time-frequency resources for multiple TBs in the resource pool, the system ensures reliable transmission resources are available when needed, while the preliminary planning phase separates resource allocation complexity from real-time transmission decisions
2Productivity
If multiple transmission opportunities are provided for different TBs, then data throughput is improved, but resource selection complexity increases
Solution Approach 1:
Multiple transmission opportunities are provided through periodic reserved periods in the resource pool, where each period offers transmission chances for different Transport Blocks. This periodic structure increases data throughput by allowing repeated transmission attempts across multiple periods while simplifying device complexity through predictable, repeating patterns rather than requiring complex one-time resource selection algorithms
Solution Approach 2:
The system dynamically selects transmission opportunities from multiple available reserved periods based on current channel conditions and transmission needs. This dynamic approach improves throughput by adapting to varying conditions across different periods while managing complexity through a framework where the overall structure remains fixed but specific instance selections can vary
3Speed
If reserved periods are optimized for low latency, then transmission speed is improved, but resource allocation flexibility decreases
Solution Approach 1:
The system employs configurable reserved period parameters including different period lengths and scaling factors that can be adjusted to balance latency requirements against allocation flexibility. By changing these parameters, the system can optimize for low latency when needed while maintaining the ability to adapt resource allocation flexibility for different service requirements
Data Source
AI summary
A method and apparatus are disclosed from the perspective of a first device for performing sidelink transmission in a sidelink resource pool. In one embodiment, the first device has a configuration of the sidelink resource pool, wherein the sidelink resource pool is enabled with resource reservation for different Transport Blocks (TBs). The first device also has a configuration of a list of reserved periods. Furthermore, the first device selects or determines a first reserved period from the list of reserved periods, wherein the first selected or determined reserved period is within a first set of reserved periods. In addition, the first device randomly selects a first integer in a first interval, wherein the first interval is based on a scaling factor and a second interval, and the scaling factor is derived based on a largest reserved period in the first set of reserved periods, and wherein the first integer indicates a number of transmission opportunities of different TBs with the first reserved period. The first device further performs sidelink transmission of one TB on one transmission opportunity from the number of transmission opportunities.