Sidelink Unicast Connection Access Control for 5G V2X Terminals
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Solution Overview
Problem
In 5G NR systems, establishing unicast connections based on sidelink communication is challenging due to limited terminal capabilities, requiring controlled processes to manage multiple connections simultaneously, especially for enhanced V2X services.
Innovation Solution
A method where a first terminal broadcasts an access control parameter to determine eligible second terminals, allowing them to request and establish unicast connections based on the parameter, which includes criteria such as distance, area identification, and access probability, enabling controlled connection establishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If unicast connections are established based on sidelink communication to support enhanced V2X services, then the communication capability and service quality are improved, but the terminal complexity and resource consumption increase due to managing multiple connections simultaneously
Solution Approach 1:
The patent applies parameter changes by introducing access control parameters (such as maximum distance, area identification, access probability) that dynamically control connection establishment. These parameters allow the system to adapt connection management to different scenarios, enabling terminals to support multiple unicast connections while controlling complexity through configurable thresholds and criteria.
Solution Approach 2:
The patent implements dynamics by making the connection establishment process adaptive and controllable through broadcast access control parameters. The system can dynamically adjust which terminals are allowed to establish connections based on real-time parameter evaluation, enabling flexible management of multiple connections rather than static connection handling.
2Productivity
If access control parameters are broadcasted to control connection establishment, then the connection management efficiency is improved, but the system complexity and signaling overhead increase
Solution Approach 1:
The patent applies preliminary action by having the first terminal broadcast access control parameters before actual connection establishment occurs. This pre-configuration of control criteria (maximum distance, area identification, access probability) allows subsequent connection requests to be evaluated efficiently against predetermined standards, improving management efficiency while keeping the actual connection control logic distributed and simple.
Solution Approach 2:
The access control parameters act as an intermediary mechanism between the first terminal and potential connecting terminals. Rather than direct complex negotiation, the broadcast parameters serve as a mediator that automatically filters and guides connection establishment, simplifying the interaction while improving management efficiency.
Data Source
AI summary
A method for establishing a unicast connection based on sidelink, performed by a first terminal, includes: broadcasting an access control parameter, wherein the access control parameter is configured to determine whether a second terminal is a target terminal allowed to establish the unicast connection with the first terminal; receiving a connection establishment request message transmitted by the second terminal in response to the second terminal being the target terminal; and establishing the unicast connection with the second terminal based on the connection establishment request message.