JCAS Resource Allocation for Coordinated Wireless Sensing
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently allocating resources for simultaneous communication and sensing operations without compromising data integrity, user experience, or increasing hardware costs.
Innovation Solution
Implementing Joint Communication and Sensing (JCAS) transmissions that coordinate resource allocation between communication and sensing operations, allowing for simultaneous data exchange and sensing without gaps in data communication or compromising sensing accuracy, using non-contiguous radiofrequency spectrum and coordinated time-frequency resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If resources are allocated for simultaneous communication and sensing operations, then both communication and sensing functions can be performed, but resource allocation efficiency deteriorates due to resource conflicts and coordination complexity
Solution Approach 1:
The resource allocation pattern is segmented into distinct communication resources and sensing resources within the time-frequency grid. This segmentation allows independent optimization and management of each resource type, resolving the conflict between simultaneous operation and allocation efficiency.
Solution Approach 2:
The resource allocation pattern is configured dynamically based on terminal capability information. The network can adaptively adjust the allocation pattern according to the specific terminal's abilities, optimizing resource utilization while maintaining simultaneous communication and sensing capabilities.
2Reliability
If resource allocation pattern is configured based on terminal capability, then communication performance is optimized, but system complexity increases due to capability assessment and configuration management
Solution Approach 1:
Terminal capability information is obtained and assessed in advance before resource allocation is performed. This preliminary action allows the network to pre-determine the appropriate allocation pattern, simplifying the actual resource allocation process and reducing real-time system complexity.
Solution Approach 2:
The resource allocation pattern parameters are adjusted based on terminal capability parameters. By changing allocation parameters according to assessed terminal capabilities, the system optimizes communication performance while managing complexity through parameter-based configuration.
3Productivity
If joint transmission is implemented, then spectrum utilization is improved, but data integrity may be compromised due to interference between communication and sensing signals
Solution Approach 1:
Different quality requirements are applied to different resource locations. Communication resources are allocated with higher protection and priority to ensure data integrity, while sensing resources use different allocation strategies. This local differentiation maintains data integrity while improving overall spectrum utilization.
Data Source
AI summary
A terminal communicating with other terminals may be configured to perform one or more Joint Communication and Sensing (JCAS) transmissions. These transmissions may be used by the terminal to exchange communication data and perform sampling for a sensor at a same time. The one or more JCAS transmissions may be transmissions following protocols in which the terminal follows a resource allocation pattern to allocate communication resources and sensing resources simultaneously. The terminal may use the JCAS transmission to allocate communication resources and sensing resources in one or multiple transmission frequency bands (e.g., bandwidth portions or parts, frequency ranges, subcarriers). The terminal may implement the JCAS transmissions in coordination with base stations and/or other terminals to prevent collisions of any transmitted data. The terminal may use the resource allocation patterns to coordinate these JCAS transmissions with devices connected through multiple radio access technologies (RATs).