Base Station Relay Link Selection for Communication Quality
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Solution Overview
Problem
Current D2D communication technologies lack flexibility in link selection and reselection, relying solely on terminal-based decisions and partial network control, which is inadequate for diverse terminal conditions and varying communication requirements.
Innovation Solution
A data transmission method where a base station receives terminal information and relay information to dynamically select and switch communication links, using relay nodes to ensure optimal communication quality, involving notifications, requests, and resource configuration to manage relay nodes effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If terminal-based decision making is used for link selection and reselection, then terminal autonomy is improved, but network control flexibility deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the terminal reports its status information (including signal quality measurements) to the base station, and the base station sends back control instructions. This feedback loop enables the network to adjust relay selection based on real-time terminal conditions, resolving the contradiction between terminal autonomy and network control flexibility.
Solution Approach 2:
The patent introduces dynamic relay selection where the base station can switch between direct communication and relay-based communication based on real-time signal quality conditions. The system dynamically adjusts the communication path according to changing network conditions, enabling flexible network control while maintaining terminal autonomy in decision-making.
2Area of stationary object
If relay nodes are added to extend network coverage, then coverage area is improved, but system complexity deteriorates
Solution Approach 1:
The patent implements self-service relay selection where terminals autonomously measure signal quality and report to the base station. The base station then automatically selects appropriate relay nodes based on this information without requiring manual configuration or complex centralized control, thereby extending coverage while limiting the increase in system complexity.
Solution Approach 2:
The patent uses relay nodes as intermediaries to extend network coverage to areas with poor direct signal quality. These relay nodes act as mediators that forward traffic between terminals and the base station, enabling coverage extension while the base station maintains overall system coordination through standardized control procedures.
3Reliability
If multiple relay nodes are available, then communication reliability is improved, but selection difficulty deteriorates
Solution Approach 1:
The patent replaces complex manual relay selection mechanisms with automated signal quality measurement and base station-controlled selection. The terminal automatically measures signal quality metrics and reports to the base station, which then makes the relay selection decision based on predefined criteria, thereby improving reliability while simplifying the selection process through standardized automated procedures.
Data Source
AI summary
The embodiments of the invention disclose a data transmission method comprising: a base station receives terminal information transmitted by terminal equipment; the base station determines, according to the terminal information, that the terminal equipment is able to communicate with the base station via a first relay node; and the base station transmits to the terminal equipment a first notification message to, instruct the terminal equipment to communicate with the base station via the first relay node. In the embodiment of the invention, the base station can instruct the terminal equipment to switch from a cellular link to a sidelink passing through the first relay node, thereby ensuring communication quality between the terminal equipment and the base station.