Sidelink Resource Partitioning via TDD Configuration
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Solution Overview
Problem
Current wireless communication technologies face challenges in efficiently managing resource allocation for sidelink communications, particularly in half-duplex mode, where UEs cannot monitor other resources while transmitting, leading to potential collisions and interference.
Innovation Solution
Implementing time-division duplexing (TDD) configuration for sidelink resource pools, where resources are partitioned into separate sets for forward and reverse links, allowing UEs to transmit and receive without overlapping, thus avoiding collisions and enhancing power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resources are shared for both forward and reverse links in sidelink communication, then resource utilization efficiency is improved, but interference and collisions occur due to half-duplex constraints
Solution Approach 1:
The patent segments the sidelink resource pool into separate resource sets for forward link and reverse link communications. This segmentation allows independent allocation and management of resources for each direction, preventing interference while maintaining high utilization efficiency through dedicated resource pools.
Solution Approach 2:
The patent introduces TDD configuration as an additional dimension for resource differentiation. By configuring different time-domain patterns for forward and reverse links, the system adds a temporal dimension to resource separation, enabling efficient resource utilization without half-duplex conflicts.
2Reliability
If UEs monitor all sidelink resources for collision avoidance, then collision detection capability is improved, but power consumption increases
Solution Approach 1:
The patent applies local quality by directing UEs to monitor only the resource sets relevant to their communication direction. Forward link UEs monitor forward link resources while reverse link UEs monitor reverse link resources, reducing unnecessary monitoring and power consumption while maintaining collision detection capability for relevant transmissions.
3Object-affected harmful factors
If TDD configuration is implemented for resource partitioning, then interference is reduced, but device complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring TDD patterns and resource partitions through higher-layer signaling before actual sidelink communication begins. This preliminary configuration simplifies the real-time operation by establishing clear resource boundaries in advance, reducing the complexity of dynamic resource management during communication.
Data Source
AI summary
Wireless communications systems and methods related to resource partitioning for sidelink are provided. A first user equipment (UE) transmits, to a second UE, a time-division duplexing (TDD) configuration indicating a first set of resources time-multiplexed with a second set of resources in a sidelink resource pool, wherein the first set of resources is associated with a first link, and wherein the second set of resources is associated with a second link different from the first link. The first UE receives from the second UE over the first link, a first communication signal in a resource of the first set of resources. The first UE transmits, to the second UE over the second link, a second communication signal using a resource of the second set of resources.