Sidelink Resource Forwarding With Adaptive Message Size Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in balancing the overhead and usefulness of resource information forwarding messages in sidelink communications, particularly when the number of UEs supporting these messages varies, leading to redundancy and increased system overhead.
Innovation Solution
A first UE determines a maximum size for a resource information forwarding message based on factors like the quantity of periodic reservations, the ratio of UEs supporting and not supporting resource information forwarding, and congestion metrics, and transmits this message to a second UE indicating resources reserved by a third UE.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resource information forwarding messages are transmitted to all UEs, then coordination reliability is improved, but system overhead increases
Solution Approach 1:
The patent implements dynamic message size adjustment where the resource information forwarding message adapts its content based on the specific needs of the target UE. The message includes resource reservation information from multiple UEs only when necessary, rather than transmitting fixed comprehensive information to all UEs, thus reducing overhead while maintaining reliability.
Solution Approach 2:
The patent applies local quality by customizing the resource information forwarding message for each target UE based on which UEs are unable to receive direct SCI messages. Instead of uniform information distribution, the message contains tailored resource reservation information relevant to specific UEs that need it, reducing unnecessary overhead.
2Loss of information
If resource information forwarding message size is increased to include more resource reservation information, then coordination completeness is improved, but message overhead increases
Solution Approach 1:
The patent implements partial action by including only the necessary subset of resource reservation information in the forwarding message. The message contains resource reservation details from UEs that the target UE needs to know about for proper coordination, rather than including all possible resource reservation information from all UEs in the system.
Solution Approach 2:
The message size and content are dynamically adjusted based on the number of UEs unable to receive direct SCI messages and the specific resource reservation scenarios. The forwarding message adapts its information content to match the actual coordination needs, avoiding both information deficiency and excessive overhead.
3Adaptability or versatility
If resource information forwarding is implemented for all UE pairs, then coordination coverage is improved, but complexity of resource management increases
Solution Approach 1:
The patent applies preliminary action by having the first UE determine the maximum size of the resource information forwarding message before transmission. This pre-calculation of message size based on the number of UEs needing coordination information simplifies the resource management process by establishing clear boundaries for message content and reducing the complexity of dynamic resource allocation during transmission.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for regulating a size of a resource information forwarding message to balance the overhead associated with transmitting the resource information forwarding message with the usefulness of the resource information forwarding message. A first user equipment (UE) may receive a sidelink control information (SCI) message from a third UE indicating resources reserved by the third UE, and it may be appropriate for the first UE to transmit a resource information forwarding message to a second UE indicating the resources reserved by the third UE. As such, the first UE may determine a maximum size of the resource information forwarding message, and the first UE may generate and transmit the resource information forwarding message to the second UE in accordance with the determined maximum size.