Sidelink Coordination Requests for Distributed Resource Allocation
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Solution Overview
Problem
In wireless communications systems, user equipment (UEs) lack a signaling mechanism to request specific types of coordination information for sidelink transmissions, which can impact the effectiveness and efficiency of resource allocation and communication reliability.
Innovation Solution
A UE can request and receive specific types of coordination information from another UE based on parameters such as cast type, priority, size, MCS, QoS, and system resource utilization, enabling more informed resource selection for sidelink transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UEs use general resource allocation modes without specific coordination information requests, then the signaling mechanism remains simple, but the effectiveness and efficiency of resource allocation deteriorates
Solution Approach 1:
The coordination information is segmented into multiple types (first type, second type, third type) corresponding to different resource allocation scenarios. Each type provides specific coordination data tailored to particular transmission conditions, allowing UEs to request only the relevant type needed for their current communication context, thereby improving allocation efficiency without requiring a comprehensive complex signaling mechanism for all scenarios
Solution Approach 2:
The system dynamically selects which type of coordination information to request and provide based on real-time transmission conditions including cast type, priority, size, MCS, and QoS parameters. This dynamic adaptation allows the signaling mechanism to remain simple for each specific case while providing comprehensive coordination coverage across all possible scenarios, resolving the contradiction between simplicity and effectiveness
2Reliability
If UEs request specific types of coordination information based on transmission parameters, then communication reliability improves, but the signaling overhead increases
Solution Approach 1:
Different types of coordination information are provided with different levels of detail and specificity according to the local requirements of each transmission scenario. For example, first type coordination information provides general resource availability, while second and third types provide more specific coordination data for particular cast types or priority levels. This localized quality adjustment ensures reliability for each specific case while minimizing overall signaling overhead by avoiding uniform detailed signaling for all cases
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. In some systems, a first user equipment (UE) may communicate with one or more other UEs in accordance with a distributed resource allocation mode. To select suitable resources for an intended sidelink transmission, the first UE may transmit, to a second UE, a request for a type of coordination information based on information associated with the intended sidelink transmission from the first UE. The second UE may generate coordination information in accordance with the requested type and may transmit the coordination information to the first UE. The first UE may use the coordination information to select a set of resources over which to perform the intended sidelink transmission from the first UE and may perform the intended sidelink transmission over the selected set of resources.