Dynamic Backhaul Link Establishment via Terminal Relay
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Solution Overview
Problem
Existing backhaul link technologies are inflexible and lack extensibility, requiring pre-deployed fixed links that cannot efficiently meet varying bandwidth demands and are limited in scalability, especially for mini base stations.
Innovation Solution
A method where a base station broadcasts system information to establish a backhaul link with any terminal that has a first communication link with the core network, using RRC signaling with a backhaul link establishment identifier, allowing multiple backhaul links to be formed dynamically based on current bandwidth and priority needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed backhaul links are pre-deployed for each base station, then reliable backhaul connection is ensured, but system flexibility and extensibility deteriorate
Solution Approach 1:
The patent transforms the static fixed backhaul link into a dynamic establishment process where the base station can flexibly select terminals to serve as backhaul access points. The system dynamically establishes backhaul links based on current network conditions, terminal capabilities, and bandwidth requirements, thereby maintaining reliability while improving adaptability and extensibility.
Solution Approach 2:
The patent introduces terminals as intermediary nodes between the base station and the core network. Instead of direct fixed links, terminals act as mediators that provide backhaul connectivity, enabling flexible and scalable network deployment while ensuring reliable communication through the terminal-mediated connection.
2Productivity
If multiple backhaul links are established dynamically, then bandwidth demands and scalability are improved, but system complexity increases
Solution Approach 1:
The patent implements a self-service mechanism where the base station autonomously manages backhaul link establishment and selection. The base station broadcasts system information, receives terminal responses, evaluates terminal capabilities, and automatically selects appropriate backhaul links without external intervention, thereby improving bandwidth efficiency while managing complexity through automation.
Solution Approach 2:
The patent incorporates feedback mechanisms where terminals report their capabilities and network conditions to the base station. The base station uses this feedback information to make informed decisions about backhaul link establishment and selection, optimizing bandwidth utilization while managing system complexity through data-driven automation.
3Reliability
If time resources are separated for backhaul link and terminal communication, then interference is reduced, but resource utilization efficiency may deteriorate
Solution Approach 1:
The patent segments time resources into distinct portions for backhaul link communication and terminal communication. By allocating specific time slots to each function, the system reduces interference between backhaul traffic and access traffic, ensuring reliable communication while maintaining efficient resource utilization through structured time division.
Data Source
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Figure 3
Figure 4A~4B
AI summary
The present disclosure discloses a method and devices for establishing a backhaul link. The method includes that: system information is broadcasted to cause a specified terminal receiving the system information to return backhaul link establishment signaling, the specified terminal referring to a terminal which has established a first communication link with a core network; the backhaul link establishment signaling returned by the specified terminal is received, the backhaul link establishment signaling being configured to indicate the specified terminal to establish a backhaul link for a base station; and a confirmation message is sent to the specified terminal to cause the specified terminal to establish a second communication link with the base station after receiving the confirmation message, the second communication link and the first communication link forming the backhaul link.