Sidelink Slot Pool Configuration for Unlicensed Channel Access
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Solution Overview
Problem
Existing communication methods in sidelink (SL) communication face challenges in resource allocation and channel occupancy due to semi-static channel access periods, which are not efficiently managed, leading to inefficiencies and potential conflicts in unlicensed frequency bands.
Innovation Solution
A method and device for sidelink communication that utilize sidelink semi-static access parameters and time domain resource configuration parameters to determine a sidelink resource pool slot set, enabling efficient channel access and occupancy by selecting appropriate slots within the resource pool, and performing listen-before-talk (LBT) to manage channel access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If semi-static channel access periods are used in sidelink communication, then channel occupancy can be established, but resource allocation conflicts and inefficiencies occur in unlicensed frequency bands
Solution Approach 1:
The resource pool is segmented into multiple slot sets, where each slot set corresponds to a specific semi-static channel access period. This segmentation allows different slot sets to be independently configured and managed, enabling efficient resource allocation within each period while maintaining overall channel occupancy reliability.
Solution Approach 2:
The patent introduces dynamic determination of slot sets based on semi-static access parameters. The network can dynamically configure and update the slot set assignments according to channel conditions and traffic requirements, allowing the system to adapt between static channel occupancy needs and dynamic resource allocation efficiency.
2Ease of operation
If existing communication methods are used in sidelink, then basic communication can occur, but conflicts arise in resource allocation due to semi-static access periods
Solution Approach 1:
The patent introduces an intermediary mechanism where the network configures multiple slot sets and provides indication information to UEs about which slot set to use for specific transmissions. This intermediary management layer simplifies the complexity by centralizing the resource allocation decisions at the network side, while UEs can operate with clear, pre-configured instructions.
Solution Approach 2:
The network performs preliminary configuration of multiple slot sets before actual sidelink communication occurs. By pre-defining the slot sets and their associations with semi-static access periods, the system eliminates the need for complex real-time resource allocation negotiations, reducing operational complexity while maintaining communication ease.
3Duration of action of moving object
If channel occupancy is enabled in semi-static periods, then communication can proceed, but resource utilization efficiency decreases due to potential conflicts
Solution Approach 1:
The patent changes the parameter structure by introducing multiple slot sets with different configurations. Each slot set can have different time domain characteristics, allowing the system to optimize for either longer channel occupancy duration or higher resource utilization efficiency depending on the specific transmission requirements and channel conditions.
Solution Approach 2:
The multi-slot-set structure provides universal applicability across different semi-static access period configurations. The same framework can accommodate various channel occupancy durations and resource utilization requirements by simply changing which slot sets are activated and how they are configured, making the system adaptable to diverse operational scenarios.
Data Source
AI summary
Provided are a communication method and device and a storage medium. The communication method applied by a communication node includes receiving (S210) a sidelink semi-static access parameter and a sidelink time domain resource configuration parameter configured by a network; determining (S220) a sidelink resource pool slot set based on the sidelink semi-static access parameter and the sidelink time domain resource configuration parameter; and performing (S230) sidelink communication based on at least one slot in the sidelink resource pool slot set.