Full-Duplex Sidelink Resource Grant Overlap for Wireless UEs
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently scheduling full-duplex sidelink communications, leading to increased latency and reduced spectral efficiency compared to half-duplex methods.
Innovation Solution
The proposed solution involves a base station transmitting overlapping resource grants to user equipment (UEs) for simultaneous data transmission and reception, allowing UEs to transmit and receive data messages over the same time resources, with feedback mechanisms to optimize communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If half-duplex communication is used, then device complexity is reduced, but spectral efficiency and productivity deteriorate
Solution Approach 1:
The patent segments the communication resources by introducing separate resource pools for transmission and reception, with specific resource sets allocated for each direction. This segmentation allows full-duplex operation while maintaining manageable device complexity through structured resource management.
Solution Approach 2:
The patent transitions from time-division multiplexing (half-duplex) to spatial/frequency dimension by introducing separate resource pools and resource sets that can operate simultaneously. This dimensional change enables full-duplex communication without proportionally increasing device complexity.
2Loss of time
If half-duplex communication is used, then device complexity is reduced, but latency increases
Solution Approach 1:
By segmenting communication resources into separate transmission and reception resource pools with dedicated resource sets, the patent enables simultaneous bidirectional communication. This segmentation eliminates the time-switching requirement of half-duplex, reducing latency while keeping device complexity manageable through structured resource allocation.
Solution Approach 2:
The patent enables continuous useful action in both directions simultaneously through full-duplex operation. Both UEs can transmit and receive data at the same time using their respective resource pools and resource sets, eliminating the idle periods inherent in half-duplex communication and thereby reducing latency.
3Productivity
If full-duplex communication is implemented, then spectral efficiency improves, but resource management complexity increases
Solution Approach 1:
The patent segments resources into distinct pools (transmission pool, reception pool) with further segmentation into resource sets for different UEs and directions. This hierarchical segmentation enables full-duplex operation while simplifying resource management through organized allocation structures rather than ad-hoc management.
Solution Approach 2:
The patent introduces resource pool configurations and resource set assignments as intermediary structures between the base station and UEs. These intermediaries facilitate full-duplex resource management by providing pre-configured resource allocations that reduce real-time management complexity while maintaining high spectral efficiency.
4Loss of time
If full-duplex communication is implemented, then latency is reduced, but resource management complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring resource pools and resource sets before full-duplex communication begins. The base station allocates transmission and reception resource pools and assigns specific resource sets to UEs in advance, which simplifies real-time resource management while enabling immediate low-latency full-duplex operation.
Solution Approach 2:
The pre-configured resource pools and resource sets serve as intermediaries that bridge the gap between base station control and UE communication. This preliminary configuration reduces real-time management complexity while enabling the low-latency full-duplex communication that is the goal of the invention.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. In some examples, a user equipment (UE) may be scheduled by a base station for full-duplex sidelink transmissions. A first UE may receive, from a base station, a first sidelink grant indicating a first set of resources and a second set of resources. The first set of resources may at least partially overlap in time with the second set of resources. Upon receiving the first sidelink, the first UE may transmit, to a second wireless device, a second sidelink grant indicating the second set of resources. The first UE may transmit a first data message to the second UE over the first set of resources and receive a second data message from the second device over the second set of resources.