Access Node Signal Adjustment for Wireless Device Selection
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Solution Overview
Problem
In telecommunication systems, power boosting of reference signals by access nodes can lead to signal radius mismatches, causing service interruptions such as dropped calls or poor media streams due to wireless devices being out of range for other signals transmitted by the access node.
Innovation Solution
Determining an increased signal level for a first signal from an access node, calculating an adjustment value based on this level, and transmitting an indication of the adjustment value along with the signal level to a wireless device, which then reports signal information to select the appropriate access node for communication, compensating for signal radius mismatches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power boosting is performed at an access node to increase reference signal strength, then channel quality is improved, but signal radius mismatch occurs causing service interruptions
Solution Approach 1:
The system performs preliminary actions by determining the increased signal level before transmission, calculating the adjustment value in advance, and providing this information to the wireless device beforehand. This allows the wireless device to compensate for the signal radius mismatch proactively rather than reactively, preventing service interruptions before they occur.
Solution Approach 2:
The access node provides feedback to the wireless device by transmitting the adjustment value that indicates the increased signal level. The wireless device uses this feedback information to adjust its measurements and determine accurate signal levels, compensating for the power boosting effect and avoiding incorrect cell selection or handover decisions.
2Illumination intensity
If reference signal power is increased to extend coverage, then signal level is improved, but wireless devices may be out of range for other signals
Solution Approach 1:
The adjustment value acts as an intermediary parameter between the access node and wireless device. It mediates the effect of power boosting by providing compensation information that allows the wireless device to interpret reference signal levels accurately, ensuring that extended coverage does not result in communication failures for other signals.
Solution Approach 2:
The system changes the parameter of signal level by applying power boosting, and simultaneously changes the adjustment value parameter to compensate for this change. By modifying both parameters in a coordinated manner, the system achieves extended coverage while maintaining communication reliability through accurate signal level perception at the wireless device.
Data Source
AI summary
Systems and methods are described for determining an access node for a wireless device. An increased signal level for a first signal and an adjustment value based on the increased signal level may be determined. An indication of the adjustment value and the first signal may be transmitted from a first access node. A wireless device in communication with the first access node may transmit signal information comprising a first signal level associated with the first access node and a second signal level associated with a second access node, where the signal information is transmitted in response to a reporting event triggered at the wireless device based on the adjustment value and at least one of a received signal level for the first signal and a received signal level for the second signal. Based on the signal information, one of the first access node and the second access node may be selected for communication with the wireless device. The wireless device may be instructed to communicate with the selected access node.