Dynamic UL Grant Repurposing for RF Sensing
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Solution Overview
Problem
Existing wireless communication systems face limitations in the quantity of sensing occasions due to limited resources allocated for radio frequency (RF) sensing operations.
Innovation Solution
A method where a user equipment (UE) receives an uplink (UL) grant for a set of UL transmission occasions, skips a subset of these occasions, and uses the allocated communication resources for RF sensing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If communication resources are allocated for UL transmission occasions, then data transmission capability is maintained, but the quantity of sensing occasions is limited
Solution Approach 1:
The system dynamically switches the function of communication resources between data transmission and sensing operations based on real-time needs. The UE can dynamically indicate to skip certain UL transmission occasions and repurpose those resources for sensing, allowing flexible adaptation between communication and sensing modes without fixed allocation
Solution Approach 2:
Communication resources are designed to serve multiple functions - they can be used for both UL data transmission and RF sensing operations. The same time-frequency resources allocated for communication can be repurposed for sensing by skipping the transmission occasion and transmitting sensing signals instead, maximizing resource utilization efficiency
2Reliability
If communication resources are dedicated for sensing operations, then sensing capability is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The system changes the operational parameters of communication resources by adjusting which UL transmission occasions are skipped. Instead of dedicating fixed resources for sensing, the UE dynamically selects which time-frequency resources to repurpose based on sensing requirements, optimizing the balance between sensing capability and communication efficiency
Solution Approach 2:
The UE autonomously decides which UL transmission occasions to skip and repurpose for sensing based on its own sensing requirements. The device self-manages the resource allocation by indicating skipped occasions to the network and independently transmitting sensing signals on those resources without requiring separate dedicated sensing resource allocation
Data Source
AI summary
A method for wireless communication by a user equipment (UE) includes receiving, from a network node, an uplink (UL) grant that grants resources for a set of UL transmission communication occasions. The method also includes transmitting, to the network node, a first message indicating that a subset of UL transmission occasions of the set of UL transmission occasions will be skipped. The method still also includes transmitting one or more sensing signals, associated with a sensing operation, on respective communication resources allocated to one or more UL transmission occasions of the subset of UL transmission occasions.