Sidelink Resource Scheduling With LBT-Aware RB Sets
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication systems struggle to efficiently schedule transmission resources in unlicensed bands due to channel occupancy and occupied bandwidth, leading to signal interference and transmission failures.
Innovation Solution
A scheduling method and apparatus that configures resource block sets combining listen-before-talk bandwidth and guard bands, generates sidelink control information, and transmits it to another terminal, while performing LBT operations to determine transmission times and adjust bandwidth usage based on channel occupancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission resources are scheduled without considering channel occupancy and occupied bandwidth, then the scheduling process is simple, but signal interference occurs and transmission fails
Solution Approach 1:
The patent segments the resource pool into multiple RB sets, where each RB set contains multiple subchannels. This segmentation allows the system to manage channel occupancy and occupied bandwidth at a finer granularity level, enabling reliable scheduling while maintaining manageable complexity through structured organization of resources
Solution Approach 2:
The patent performs preliminary actions by configuring RB sets and subchannels before actual transmission occurs. The system pre-establishes the relationship between LBT bandwidth, guard bands, and subchannels, allowing terminals to efficiently schedule transmission resources without complex real-time calculations, thus improving reliability while keeping scheduling manageable
2Reliability
If RB sets are configured combining LBT bandwidth and guard bands, then transmission reliability is improved, but resource configuration complexity increases
Solution Approach 1:
The patent merges the LBT bandwidth and guard bands into a unified RB set structure. By combining these previously separate concepts into a single configurable unit, the system simplifies the resource configuration process while maintaining the reliability benefits of proper channel occupancy management and guard band placement
Solution Approach 2:
The RB set configuration serves multiple functions simultaneously: it defines the LBT bandwidth for channel sensing, establishes guard bands for interference protection, and organizes subchannels for resource allocation. This multi-functionality reduces the overall complexity by eliminating the need for separate configuration mechanisms for each function
3Productivity
If subchannels are configured from PRBs in RB sets, then bandwidth utilization is optimized, but scheduling information generation becomes more complex
Solution Approach 1:
The patent segments the frequency resources into subchannels within RB sets, allowing flexible allocation and utilization of available bandwidth. This segmentation enables optimized bandwidth usage by assigning specific subchannels to specific terminals based on channel conditions, while the structured nature of the segmentation keeps the control information generation manageable through standardized procedures
4Object-affected harmful factors
If LBT operations are performed to determine transmission times, then interference is minimized, but transmission time uncertainty increases
Solution Approach 1:
The patent performs LBT operations as a preliminary action before actual transmission occurs. By conducting these channel sensing operations in advance and using the results to determine transmission timing, the system minimizes interference while managing time variability through pre-established scheduling protocols that account for LBT outcomes
Data Source
AI summary
The present invention relates to a scheduling technology for communication between terminals of a communication system. Provided may be a method for a first terminal, comprising the steps of: configuring, in a resource pool of sidelink, resource block (RB) sets in units obtained by adding a protection band to a listen-before-talk (LBT) bandwidth; configuring a subchannel including two or more physical resource blocks (PRBs) from among a plurality of PRBs included in each of the RB sets; generating sidelink control information including identification information of scheduled at least one subchannel from among a plurality of subchannels configured in the RB sets; and transmitting the sidelink control information to a second terminal.