Wireless Device Handover via Access Node Signal Strength
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Solution Overview
Problem
In wireless communication systems, the lack of shared loading information between access nodes hinders effective load management, leading to suboptimal handover decisions when access nodes do not exchange or provide comprehensible loading data.
Innovation Solution
Implement a method where a wireless device initiates a handover request to a second access node, and if rejected, a timer is started; upon expiration, a second request is sent, allowing the device to switch to the second access node without requiring shared loading information, thereby enabling handover decisions based on local criteria and signal strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If access nodes exchange loading information to enable effective load management, then handover decisions can be optimized based on network loading, but communication protocol complexity increases and reliability decreases when loading information is not shared
Solution Approach 1:
The wireless device autonomously makes handover decisions based on its own measurements of signal strength from neighboring access nodes, without requiring loading information from the network. The device independently evaluates whether to handover by comparing signal qualities, eliminating the need for complex inter-access node loading information exchange protocols while maintaining effective load management.
2Reliability
If access nodes share loading information, then load management reliability improves, but the system requires more complex communication infrastructure and information sharing mechanisms
Solution Approach 1:
The wireless device acts as an intermediary that directly measures and evaluates signal quality from target access nodes, bypassing the need for access nodes to exchange loading information. This direct measurement approach provides reliable handover decisions without requiring complex information sharing infrastructure between network elements.
Solution Approach 2:
The device performs self-evaluation of handover suitability by measuring signal strength and quality directly, making the system reliable without depending on external loading information from access nodes. This autonomous approach eliminates the need for complex inter-node communication mechanisms.
3Manufacturing precision
If the system waits for loading information before making handover decisions, then load management accuracy improves, but handover speed decreases
Solution Approach 1:
The wireless device continuously monitors and measures signal strength from neighboring access nodes in advance, maintaining a ready list of potential handover targets with pre-evaluated signal qualities. When a handover becomes necessary, the device can immediately execute the transition using pre-collected measurement data, achieving both accuracy and speed without waiting for loading information.
Data Source
AI summary
In systems and methods of selecting an access node for wireless device communication, it is determined that a first loading of a first access node meets a first loading criteria, and a wireless device is selected which is in communication with the first access node and which detects a second access node. A request is sent to the second access node to accept a handover of the wireless device, and a timer is started comprising a first timer value when the request is rejected by the second access node. A second request is sent to the second access node to accept a handover of the wireless device to the second access node when the timer expires, and the wireless device is instructed to change from communicating with the first access node to communicating with the second access node when the second request is accepted by the second access node.