Cellular Sidelink Resource Pools With Non-Contiguous Frequencies
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Solution Overview
Problem
Existing wireless communication systems, particularly in vehicular applications like V2X systems, face challenges in efficiently managing diverse device complexities, traffic patterns, and resource allocation for device-to-device communications, with a need for improved support for flexible resource configurations.
Innovation Solution
A baseband processor and method for cellular sidelink communication that allows for flexible resource configuration, including non-contiguous frequency and time resources, enabling efficient spectrum usage and increased frequency diversity through super resource units and non-contiguous control channel allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional contiguous resource allocation is used for sidelink communication, then resource management is simple, but spectrum usage efficiency is low and frequency diversity is limited
Solution Approach 1:
The patent segments the sidelink resource pool into multiple non-contiguous frequency sub-channels and time slots, allowing independent allocation and configuration of each segment. This enables efficient spectrum usage by selecting specific frequency segments that are available and suitable for communication, while maintaining manageable complexity through structured segmentation of resources.
Solution Approach 2:
The patent introduces super resource units that aggregate resources across multiple dimensions (frequency sub-channels and time slots), transforming the resource allocation from a single-dimension contiguous block to a multi-dimensional non-contiguous structure. This enables frequency diversity by spreading resources across different frequency segments while maintaining organized management through the super resource unit framework.
2Reliability
If non-contiguous frequency resources are allocated for sidelink communication, then frequency diversity is increased, but resource allocation complexity increases
Solution Approach 1:
The patent divides the frequency spectrum into multiple sub-channels and allows selection of non-contiguous segments for sidelink communication. Each sub-channel can be independently configured and managed, enabling frequency diversity by selecting segments with better channel conditions while keeping allocation complexity manageable through standardized segmentation rules.
Solution Approach 2:
The patent creates a universal resource pool structure where the same non-contiguous resource allocation mechanism can serve multiple purposes: unicast, groupcast, and broadcast communications. The super resource units provide a multi-functional framework that handles different communication types using the same non-contiguous resource structure, reducing overall system complexity.
3Adaptability or versatility
If super resource units aggregating multiple frequency sub-channels are used, then resource allocation flexibility is improved, but configuration complexity increases
Solution Approach 1:
The patent merges multiple frequency sub-channels and time slots into super resource units, creating aggregated resource blocks that can be allocated as unified entities. This provides flexibility by allowing the system to allocate varying numbers of sub-channels and time slots based on traffic requirements, while the standardized merging process into super resource units keeps configuration complexity manageable.
Solution Approach 2:
The patent enables dynamic configuration of super resource units where the number of aggregated sub-channels and time slots can be adjusted based on channel conditions and traffic demands. The resource pool can be reconfigured to create different super resource unit sizes and structures, providing adaptability while maintaining organized management through the super resource unit abstraction layer.
Data Source
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AI summary
Embodiments are presented herein of processors, systems, and methods for performing cellular sidelink communication with flexible resource configuration in a wireless communication system. A first wireless device may receive cellular sidelink resource pool configuration information. The cellular sidelink resource pool configuration information may configure a cellular sidelink resource pool that includes non-contiguous frequency resources. The first wireless device may perform cellular sidelink communication with a second wireless device using the cellular sidelink resource pool that includes non-contiguous frequency resources.