Sidelink Scheduling Request Resource Allocation for Multi-Carrier Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing sidelink communication scheduling requests across multiple carriers in wireless communication networks, particularly in configuring and allocating resources for sidelink communication, which affects data throughput and service quality.
Innovation Solution
A method where a device determines a sidelink message and triggers a scheduling request to a network node, receiving configuration information for sidelink communication, and transmits a sidelink MAC Control Element (CE) using the scheduled resources, enabling efficient resource allocation and data transmission across multiple carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple carriers are configured for sidelink communication, then data throughput is improved, but resource allocation complexity increases
Solution Approach 1:
The patent divides the sidelink communication resources into separate scheduling request resources for each carrier/cell. Each carrier has its own dedicated scheduling request resources, allowing independent management and reducing the complexity of allocating resources across multiple carriers simultaneously.
Solution Approach 2:
The patent introduces a new dimension of carrier-specific scheduling request configurations by adding information elements that identify the associated carrier or cell. This dimensional separation allows the system to manage multiple carriers without increasing overall complexity, as each carrier's resources are independently configured and tracked.
2Measurement precision
If carrier-specific scheduling request resources are configured, then scheduling precision is improved, but signaling overhead increases
Solution Approach 1:
The patent combines the carrier identification information with the scheduling request configuration in a unified signaling structure. The network node configures scheduling request resources with associated carrier information, allowing precise carrier-specific scheduling while consolidating the signaling overhead into a single configuration message rather than separate messages for each carrier.
Solution Approach 2:
The scheduling request configuration structure is designed to be universal and applicable across multiple carriers. The same configuration format can identify different carriers through included information elements, making the signaling overhead reusable and efficient rather than requiring separate dedicated signaling for each carrier.
3Productivity
If scheduling request resources are allocated per carrier, then resource allocation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent enables the device to autonomously determine which carrier-specific scheduling request resources to use based on the sidelink message and associated carrier information. The device self-manages the selection and transmission processes without requiring complex external coordination, improving resource allocation efficiency while keeping device complexity manageable through automated decision-making.
Data Source
AI summary
A method and apparatus are disclosed. In an example from the perspective of a first device configured with a plurality of carriers/cells for sidelink communication, the first device determines a first sidelink message for transmission to a first destination associated with a first set of carriers/cells of the plurality of carriers/cells. The first device triggers, based on the first sidelink message, a first scheduling request to a network node. The first device transmits a first signaling of the first scheduling request to the network node. The first signaling includes first information associated with the first destination and/or second information associated with the first set of carriers/cells.