Wireless Measurement Windows for Long Propagation Delay
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately configuring measurement windows for wireless devices to account for long propagation delays, leading to incomplete measurement of reference signals and inaccurate results.
Innovation Solution
A wireless device is configured with a basic measurement window and one or more additional measurement windows, allowing it to perform measurements efficiently under long propagation delays by receiving a measurement configuration that includes information on these windows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single basic measurement window is configured, then the measurement procedure is simple, but the measurement cannot accurately capture reference signals under long propagation delays
Solution Approach 1:
The measurement window is divided into a basic measurement window and one or more additional measurement windows. Each window captures reference signals at different time offsets, allowing the system to segment the measurement process into manageable parts that collectively cover the entire propagation delay period.
Solution Approach 2:
The measurement configuration is set up in advance with predetermined time offset information between the basic measurement window and additional measurement windows. This preliminary configuration ensures that all necessary reference signals are captured before the actual measurement execution, accommodating long propagation delays without requiring real-time adjustments.
2Reliability
If the measurement window is extended to cover long propagation delays, then all reference signals can be measured, but the measurement time increases
Solution Approach 1:
Instead of using a single extended measurement window, the total measurement duration is segmented into multiple smaller windows (basic measurement window and additional measurement windows). Each window operates for a limited duration, but collectively they cover the entire propagation delay period, reducing the time required for each individual measurement phase.
Solution Approach 2:
The time offset information between measurement windows is predetermined and configured in advance. This allows the system to efficiently sequence the measurement windows without unnecessary delays, ensuring that the sum of all window durations equals the minimum required measurement time while maintaining measurement completeness.
3Measurement precision
If additional measurement windows are added, then accurate measurement under long propagation delay is achieved, but the configuration complexity increases
Solution Approach 1:
The measurement configuration, including time offset information between the basic measurement window and additional measurement windows, is set up in advance through network-side signaling. This preliminary configuration eliminates the need for complex real-time adjustments, as all timing parameters are predetermined and communicated to the wireless device before measurement execution.
Solution Approach 2:
The network provides feedback in the form of measurement configuration information that includes precise time offset details. This feedback mechanism allows the wireless device to automatically adjust its measurement timing without requiring complex local configuration, simplifying the operation while maintaining measurement accuracy under long propagation delays.
Data Source
AI summary
A method and apparatus for performing measurement under a long propagation delay in a wireless communication system is provided. A wireless device receives, from a network, a measurement configuration including an information on a basic measurement window and an information on a first additional measurement window. A wireless device performs a measurement within the basic measurement window. A wireless device performs a measurement within the first additional measurement window, based on measurement results from the basic measurement window. A wireless device reports, to the network, measurement results from the basic measurement window and the first additional measurement window.