Client Node Link Selection Using Access Network and Channel State
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Solution Overview
Problem
In wireless communication systems, especially wireless LANs, determining an optimal communication link is challenging due to interference and poor network planning, leading to difficulties in achieving the required transmission rate when only RSSI or transmission rate is considered.
Innovation Solution
A method and apparatus in a client node that determines access network information and channel state information for each host node, using this data to select the best communication link, considering both access network and link state information to optimize data communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only RSSI or transmission rate is considered for link selection, then the selection process is simple, but the required transmission rate cannot be achieved due to interference and poor network planning
Solution Approach 1:
The system performs preliminary determination of access network information (including access network type and data transmission rate) for each host node before actual link selection. This advance preparation allows the client node to filter and evaluate host nodes based on pre-acquired network conditions, ensuring that only suitable host nodes are considered for connection, thereby guaranteeing the required transmission rate can be achieved.
Solution Approach 2:
The link selection process is divided into multiple independent evaluation stages: determining access network information for each host node, evaluating channel state information, determining link state information combining both factors, and finally selecting the optimal host node. This segmentation allows complex decision-making to be broken down into manageable steps, improving reliability without overwhelming system complexity.
2Measurement precision
If access network information is considered in addition to channel state information, then link selection accuracy is improved, but information processing requirements increase
Solution Approach 1:
The system extracts only the essential access network information parameters (access network type and data transmission rate) needed for link selection, rather than processing all available network data. This selective extraction reduces information processing load while maintaining sufficient accuracy for making optimal link selection decisions.
Solution Approach 2:
Access network information is determined in advance for each host node before the actual link selection process. This preliminary determination organizes and prepares the information in a structured format, reducing the processing burden during the actual selection phase while ensuring accurate link selection based on comprehensive information.
Data Source
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AI summary
An apparatus and a method for determining a communication link in a client node of a communication system are provided. In the method, access network information and channel state information for at least one host node are determined. Link state information for each host node is determined using the access network information and the channel state information for the corresponding host node. One of the at least one host node is determined with consideration of the link state information for each of the at least one host node.