Sidelink Discovery Slot Mapping Using Zone ID in V2X
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transmitting discovery signals, leading to signal collisions and delays in sidelink communication, particularly in vehicle-to-everything (V2X) scenarios, which require enhanced mobile broadband communication with low latency and reliability.
Innovation Solution
The method involves determining a zone ID based on terminal location, generating a discovery slot mapping set, and transmitting a discovery signal accordingly to reduce signal collisions and optimize synchronization signal transmission times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If discovery signals are transmitted in sidelink communication without zone-based slot mapping, then communication between terminals can be established, but signal collisions occur and transmission efficiency decreases
Solution Approach 1:
The invention segments the discovery signal transmission process by introducing zone-based slot mapping. Terminals are divided into different zones based on their geographic locations, and each zone is assigned specific time slots for discovery signal transmission. This segmentation prevents signals from different terminals from colliding by ensuring spatial and temporal separation, thereby improving both reliability and efficiency of discovery signal transmission.
2Loss of time
If discovery signals are transmitted without zone ID-based slot mapping, then terminal discovery can proceed, but signal collisions and transmission delays increase
Solution Approach 1:
The invention applies preliminary action by pre-configuring zone IDs and associated slot mapping sets before discovery signal transmission. Each terminal determines its zone ID based on location information and pre-acquires the corresponding slot mapping set. This preliminary configuration ensures that terminals transmit discovery signals in predetermined non-conflicting time slots, eliminating transmission delays and avoiding collisions, thus improving both timing efficiency and communication reliability.
3Productivity
If conventional discovery signal transmission is used, then basic communication functionality is maintained, but collision probability increases in dense terminal environments
Solution Approach 1:
The invention introduces zone ID as an intermediary element that mediates between terminal location and discovery signal transmission timing. The zone ID serves as a mapping key that connects geographic zones to specific slot mapping sets. This intermediary mechanism systematically assigns transmission slots based on terminal locations, preventing signal collisions in dense environments while maintaining efficient discovery procedures through structured resource allocation.
Data Source
AI summary
Disclosed herein is a method of operating a terminal in a wireless communication system, including: receiving information on a location of the terminal; generating a zone identify (zone ID) based on the information on the location of the terminal; determining a discovery slot mapping set based on the zone identify; and transmitting a discovery signal based on the discovery slot mapping set.