Wireless Sensing Resource Multiplexing With Dynamic Channel Grants
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Solution Overview
Problem
The challenge in next-generation wireless networks is to efficiently multiplex sensing and communication operations in shared radio resources while minimizing interference and maintaining quality of service, particularly due to the varying resource requirements of dense sensing access points and devices.
Innovation Solution
A centralized Sensing Management Function (SMF) dynamically allocates semi-persistent scheduling grants for sensing operations, leveraging unused communication resources and implementing interference avoidance schemes, such as blanking, to ensure efficient multiplexing of sensing and communication services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensing operations are allocated in control channels like PRS, then sensing services can be provided, but resources become scarce and interference limits sensing performance when sensing access points are densified
Solution Approach 1:
The patent segments the data channel resources by creating separate sensing channel structures (PSeCH, PUSeCH) within the existing data channel framework. This segmentation allows sensing operations to have dedicated resource elements while sharing the overall data channel, thereby increasing available sensing resources without compromising data communication capacity
Solution Approach 2:
The patent makes data channel resources serve dual purposes by enabling them to carry both communication data and sensing signals. The same physical downlink/uplink shared channels (PDSCH/PUSCH) are used for both data transmission and sensing operations, maximizing resource utilization and eliminating the scarcity of dedicated sensing resources
2Object-affected harmful factors
If sensing and communication operations use orthogonal resources, then interference is limited, but resource utilization efficiency decreases
Solution Approach 1:
The patent merges sensing channel and data channel resources at the physical layer by allowing sensing channel grant (SCG) allocations to overlap with data channel resource blocks. This merging enables non-orthogonal multiplexing where sensing and communication operations share the same time-frequency resources, significantly improving resource utilization while managing interference through coordinated scheduling
Solution Approach 2:
The patent implements dynamic resource allocation where the sensing channel grant can be flexibly configured to overlap with or avoid data channel resources based on instantaneous channel conditions and service requirements. This dynamic adjustment allows the system to optimize the trade-off between interference management and resource utilization efficiency in real-time
3Measurement precision
If PRS resources are increased to handle sensing load, then sensing performance improves, but data channel resources are occupied and communication capacity is reduced
Solution Approach 1:
The patent enables data channel resources to serve dual purposes by allowing them to carry both communication data and sensing signals simultaneously. The same PDSCH/PUSCH resources are used for both data transmission and sensing operations, eliminating the need to allocate separate dedicated sensing resources that would reduce data channel capacity
Solution Approach 2:
The patent changes the allocation parameters by introducing sensing channel grants (SCG) that can dynamically adjust the amount of resources dedicated to sensing within the data channel. This allows the system to optimize sensing measurement precision by allocating appropriate resource elements while maintaining sufficient data channel capacity through flexible parameter adjustment
Data Source
AI summary
A method comprising, gathering information about one or more sensing service requests raised in a communication network, wherein said communication network comprises sensing and/or data nodes, allocating in response to said one or more sensing service requests a plurality of resources within resources to perform communication of said communication network as resources to perform sensing operations for carrying sensing signals of said sensing nodes, assigning one or more of the allocated resources to perform sensing operations to the sensing nodes, and granting the respective sensing nodes access to the assigned resources to perform sensing operations.