Access Point Data Offloading via Network Status Detection
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Solution Overview
Problem
The efficiency of data offloading in wireless communication systems is reduced due to the inability of multimode stations to accurately determine which cellular network to offload data to, leading to congestion and poor link quality in WLAN networks.
Innovation Solution
A method and device for detecting network status and determining a target cellular network standard for data offloading, involving the detection of network load, link quality, and buffered data, with a handover signaling mechanism to direct data transmission to the optimal cellular network standard.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data offloading is implemented without specifying target cellular network standard, then data transmission can be offloaded from WLAN, but the station cannot accurately determine which cellular network to offload to, reducing offloading efficiency
Solution Approach 1:
The access point acts as an intermediary that collects network status information from multiple cellular networks, processes this information, and provides recommended target network selection to the station. This mediator approach enables the station to make informed offloading decisions without having to directly monitor and compare all cellular network parameters itself, thereby improving offloading efficiency while maintaining accurate target network selection.
2Measurement precision
If the access point monitors multiple network parameters for status detection, then more accurate offloading decisions can be made, but the complexity of the access point device increases
Solution Approach 1:
The network status detection function is segmented into multiple independent modules, each responsible for monitoring specific parameters (signal strength, data rate, latency, etc.). This modular segmentation allows the access point to maintain high measurement precision through comprehensive monitoring while managing device complexity through organized, separated functional units that can be independently configured and maintained.
3Reliability
If the access point sends detailed handover signaling with target network information, then the station can accurately offload data, but the signaling overhead and processing time increase
Solution Approach 1:
The access point performs preliminary network status monitoring and target network identification before the actual data offloading occurs. By pre-assessing cellular network conditions and determining the optimal target network in advance, the access point can send concise handover signaling with already-processed target network information, reducing the station's processing time while maintaining reliable offloading decisions.
Data Source
AI summary
A data offloading method, device, user equipment, and base station are provided. The data offloading method includes: detecting a network status of an access point device; determining, when the network status meets a preset condition, a target cellular network standard for bearing service data of a multimode station; and transmitting a handover signaling to the multimode station, the handover signaling carrying information of the target cellular network standard.