Network Node Cell Selection via Intermediary Load Information
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Solution Overview
Problem
In wireless communication networks, determining the most suitable cell for a wireless device to improve service is challenging due to the lack of direct traffic load status information between network nodes, leading to inefficient cell utilization and poor service quality.
Innovation Solution
A method where a first network node receives current load information for a candidate cell from a second network node, which has a control connection with the candidate cell's serving node, allowing the first network node to make informed decisions on which cells to serve the wireless device based on traffic load status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If network nodes exchange traffic load status information directly, then cell selection accuracy is improved, but network complexity increases due to requiring direct control connections between all relevant nodes
Solution Approach 1:
The patent introduces a intermediary network node that acts as a mediator to forward traffic load status information between network nodes that do not have direct control connections. This allows the first network node to obtain load information from the third network node (serving the candidate cell) through the second network node, resolving the contradiction by enabling accurate cell selection without requiring direct connections between all nodes.
2Reliability
If network nodes obtain traffic load information from neighboring nodes, then service quality is improved, but information availability deteriorates when direct control connections are absent
Solution Approach 1:
The second network node serves as an intermediary that has direct control connections to both the first network node and the third network node. It forwards traffic load status information from the third network node to the first network node, ensuring information availability is maintained even in the absence of direct connections between all relevant nodes, thus preserving service quality.
3Measurement precision
If direct control connections are established between all network nodes for information exchange, then information accuracy is improved, but the number of connections and system complexity increases
Solution Approach 1:
Instead of establishing direct control connections between all network nodes, the patent uses an intermediary second network node to forward information between the first and third network nodes. This reduces the total number of direct connections required in the network while maintaining accurate traffic load status information exchange, thereby resolving the contradiction between information accuracy and system complexity.
Data Source
AI summary
A method performed by a first network node for determining one or more cells to serve a wireless device connected to the first network node in a wireless communications network is provided. In a control connection between the first network node and a second network node, the first network node receives (1002) from the second network node, current load information for a third cell candidate, wherein the third cell candidate is served by a third network node. The first network node determines (1003) one or more cells to serve the wireless device based on the current load information of the third cell candidate.