Sidelink Resource Coordination Using Compressed Slot-Subchannel Bitmaps
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in resource coordination between user equipment (UEs) due to the large overhead of signaling resources and processing required for transmitting bitmaps indicating preferred and non-preferred sidelink communication resources.
Innovation Solution
Transmission of compressed bitmaps to indicate available or unavailable sidelink communication resources, allowing UEs to efficiently coordinate resource usage by generating and transmitting bitmaps that summarize availability or unavailability of slots and subchannels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional bitmaps are transmitted to indicate preferred and non-preferred sidelink communication resources, then complete resource availability information is provided to UEs, but signaling overhead and processing requirements increase significantly
Solution Approach 1:
The patent extracts and transmits only the essential resource availability information that UEs need for sidelink communication coordination. Instead of transmitting complete bitmaps covering all possible resources, the system identifies and transmits only the subset of resources that are actually relevant for coordination, thereby reducing signaling overhead while maintaining the necessary information completeness for effective UE coordination
Solution Approach 2:
The patent segments the resource availability information into manageable portions, organizing it by resource types (slots, subchannels, resource blocks) and transmission stages. This segmentation allows the information to be transmitted in a structured, compressed format that reduces overall signaling overhead while preserving the detailed information needed for precise resource selection and coordination
2Productivity
If comprehensive resource coordination information is transmitted between UEs, then resource utilization efficiency improves, but processing burden and computational requirements increase
Solution Approach 1:
The patent applies local quality by providing different levels of resource availability information for different resource types and different UE contexts. Instead of uniformly transmitting detailed information for all resources, the system tailors the information granularity to the specific needs of each resource type and UE pair, reducing processing burden while maintaining efficient resource utilization where it matters most
Solution Approach 2:
The patent implements partial action by transmitting only the necessary subset of resource coordination information rather than complete exhaustive data. The system determines the minimal set of resource availability indicators needed for effective coordination and transmits only those, reducing processing requirements while maintaining sufficient information for productive resource utilization
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit compressed bitmap(s) to indicate preferred or non-preferred sidelink resources. A first UE may monitor a set of sidelink resources including a set of slots and subchannels for the slots and determine which resources are available for communications for a second UE. In some examples, the first UE may generate a bitmap indicating which slots have at least one subchannel that is unavailable, and, for each slot having at least one subchannel that is unavailable, a bitmap indicating which subchannels are unavailable for that slot. The first UE may transmit the bitmaps to the second UE. In some examples, the first UE may generate a bitmap indicating which slots have at least one subchannel that is available, and, for each slot having at least one subchannel that is available, a bitmap indicating which subchannels are available.