Platoon Communication Sub-Pool Allocation for Half-Duplex Conflict Resolution
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing resource allocation and signal transmission within terminal groups moving in formation, particularly in vehicle-to-everything (V2X) communication scenarios, where half-duplex issues and terminal joining/leaving events complicate resource management.
Innovation Solution
A method for transmitting and receiving signals in a terminal group forming a platoon, involving the reception of group resource pool information, selection of a sub-pool based on physical location or energy levels, and periodic signaling to manage resource allocation and terminal membership, thereby solving half-duplex problems and efficiently handling terminal joining/leaving events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single resource pool is used for all terminals in a platoon group, then resource allocation is simplified, but half-duplex conflicts and interference occur between transmitting and receiving terminals
Solution Approach 1:
The patent divides a single resource pool into multiple sub-pools (first sub-pool for transmitting terminals, second sub-pool for receiving terminals) to eliminate half-duplex conflicts. This segmentation allows terminals to be categorized by their communication state, preventing interference between simultaneous transmission and reception operations.
2Productivity
If resource pools are dynamically adjusted for terminals joining or leaving the group, then resource utilization efficiency improves, but signaling overhead and management complexity increase
Solution Approach 1:
The patent pre-configures multiple sub-pools in advance, corresponding to different terminal states (transmitting, receiving, joined, left). When terminals join or leave the platoon group, they are simply assigned to or removed from predetermined sub-pools based on their state, avoiding complex real-time resource reallocation and reducing signaling overhead.
3Reliability
If sub-pools are allocated based on terminal physical location in the platoon, then signal transmission quality improves, but resource allocation complexity increases
Solution Approach 1:
The patent allocates different sub-pools to terminals based on their physical locations within the platoon (e.g., head, middle, tail positions). This local differentiation ensures that terminals in specific positions use resources optimized for their transmission characteristics, improving overall signal quality while maintaining manageable allocation complexity through location-based categorization.
Data Source
AI summary
An embodiment of the present invention relates to a method for transmitting or receiving a signal associated with a platoon communication by a first terminal in wireless communication system, the method comprising the steps of: receiving group resource pool information of a terminal group moving in a platoon formation; selecting a sub-pool, which is to be used by the first terminal, in a group resource pool on the basis of the group resource pool information; and transmitting or receiving a signal to or from one or more terminals within the terminal group through the selected sub-pool.