Mode 1 Sidelink Carrier Aggregation for Multi-Carrier Scheduling
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Solution Overview
Problem
Existing wireless communication systems do not support sidelink carrier aggregation (CA) for Mode 1 sidelink communications, limiting the ability of user equipment (UE) to efficiently communicate over multiple sidelink carriers.
Innovation Solution
The implementation of techniques that enable sidelink CA for Mode 1 sidelink communications, allowing UEs to receive control messages from a network entity for scheduling multiple sidelink messages over multiple sidelink carriers, and supporting cross-carrier scheduling, self-scheduling, or both.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sidelink carrier aggregation is not supported for Mode 1 sidelink communications, then the system maintains simplicity in existing wireless communication protocols, but the ability of user equipment to efficiently communicate over multiple sidelink carriers is limited
Solution Approach 1:
The patent segments the sidelink communication process into distinct phases: control message reception phase, scheduling decision phase, and data transmission phase. By dividing the complex carrier aggregation functionality into manageable segments with clear boundaries, the patent enables multi-carrier support while maintaining protocol clarity and reducing overall system complexity.
Solution Approach 2:
The patent implements preliminary action by having the network entity pre-configure and signal carrier aggregation parameters through control messages before actual data transmission begins. This advance configuration allows UEs to prepare their transmission resources in advance, enabling efficient multi-carrier operations without introducing complexity during the actual data transfer phase.
2Productivity
If multiple sidelink carriers are utilized for sidelink communications, then network performance and capacity are enhanced, but the complexity of scheduling and resource management increases
Solution Approach 1:
The patent introduces the network entity as an intermediary that centralizes the scheduling complexity for multi-carrier sidelink communications. The network entity receives control messages, makes scheduling decisions, and provides resource allocation information to UEs. This intermediary approach allows multiple carriers to be utilized effectively while the network entity manages the complexity of coordinating resources across carriers, preventing UE-side complexity from becoming unmanageable.
Solution Approach 2:
The patent implements feedback mechanisms where UEs report channel conditions, buffer status, and resource utilization information to the network entity. The network entity uses this feedback to dynamically adjust scheduling decisions and resource allocation across multiple carriers. This closed-loop feedback system enables the network to optimize multi-carrier utilization based on real-time conditions, managing scheduling complexity through informed decision-making.
3Adaptability or versatility
If cross-carrier scheduling is implemented, then resource allocation flexibility is improved, but the complexity of control message processing increases
Solution Approach 1:
The patent implements universality by designing control messages with a unified structure that can handle both single-carrier and cross-carrier scheduling scenarios. The control message format includes flexible fields that adapt to different scheduling types, allowing the same message structure to serve multiple functions. This universal approach enables cross-carrier scheduling flexibility while avoiding the need for separate complex message formats for different scheduling modes.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. In some cases, a first user equipment (UE) may receive, from a network entity via an access link, a first control message enabling sidelink carrier aggregation between a first UE and a second UE, the sidelink carrier aggregation associated with at least multiple sidelink carriers for sidelink communication between the first UE and the second UE. Additionally, the first UE may receive, from the network entity via one or more downlink carriers of an access link, one or more second control messages scheduling transmission of multiple sidelink messages over the multiple sidelink messages based on the first control message. As such, the first UE may communicate the multiple sidelink messages via the multiple sidelink carriers based on the one or more second control messages.