Inter-Frequency Measurement Rate Allocation in Wireless Devices
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Solution Overview
Problem
In wireless communication networks, low-end devices with a single receiver must interrupt data reception to perform inter-frequency measurements across different carrier frequencies, leading to reduced throughput and complex data scheduling due to measurement gaps, which are not optimally managed for multiple frequency layers with varying performance requirements.
Innovation Solution
A wireless device determines measurement rates based on performance requirements for each frequency layer, allocating measurement gaps proportionally to perform inter-frequency measurements, allowing for differentiated measurement rates and efficient resource allocation across multiple frequency layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement gaps are allocated for inter-frequency measurements on multiple frequency layers, then measurement coverage is improved, but data throughput is reduced due to interruption of data reception
Solution Approach 1:
The patent segments the measurement gaps into different types (first measurement gaps and second measurement gaps) with different purposes and configurations. First measurement gaps are used for inter-frequency measurements on frequency layers, while second measurement gaps are used for other measurement purposes. This segmentation allows the system to allocate measurement resources more efficiently without unnecessarily interrupting data reception, thereby maintaining higher data throughput while still achieving comprehensive measurement coverage.
Solution Approach 2:
The patent implements dynamic measurement gap allocation where the network node configures different measurement gap patterns based on device capabilities, network conditions, and performance requirements. The measurement gap configuration can be adjusted dynamically to balance measurement needs and data transmission requirements, allowing the system to optimize the trade-off between measurement coverage and data throughput in real-time.
2Reliability
If measurement gaps are configured for inter-frequency measurements, then handover reliability is improved, but scheduling complexity increases
Solution Approach 1:
The patent segments measurement gaps into specialized first measurement gaps for inter-frequency measurements and second measurement gaps for other purposes. This segmentation simplifies scheduling by clearly defining the purpose and timing of each gap type, reducing the complexity of managing measurement interruptions while maintaining handover reliability through dedicated measurement opportunities.
Solution Approach 2:
The network node performs preliminary configuration of measurement gap patterns before inter-frequency measurements are needed. By pre-configuring the measurement gap structure and timing, the system prepares the device in advance, reducing the complexity of real-time scheduling decisions and ensuring that measurements can be performed reliably without last-minute scheduling conflicts.
3Ease of operation
If uniform measurement rates are applied to all frequency layers, then implementation simplicity is maintained, but performance optimization is reduced
Solution Approach 1:
The patent applies local quality by configuring different measurement rates and gap patterns for different frequency layers based on their specific requirements. Instead of using a uniform measurement approach, the system tailors measurement parameters to the characteristics of each frequency layer, optimizing measurement efficiency for layers with varying signal conditions, coverage requirements, and importance to the network.
Solution Approach 2:
The measurement configuration is made dynamic, allowing the network to adjust measurement rates and gap patterns for different frequency layers based on changing network conditions and performance requirements. This dynamic approach enables the system to optimize measurement efficiency across multiple frequency layers while maintaining manageable configuration complexity through structured parameter management.
Data Source
AI summary
In one aspect of the teachings herein, a wireless device operating in a wireless communication network determines the measurement rate to use for making inter-frequency measurements on a given frequency layer, based on a performance requirement specified for that layer. For example, the wireless device uses a higher measurement rate for a frequency layer that has a performance requirement that is higher than the performance requirement specified for another one of the layers on which it is to perform inter-frequency measurements. Correspondingly, in an example scenario, a network node sends measurement configuration information to a targeted device, where that information indicates the layers on which the device is to perform inter-frequency measurements and indicates the performance requirements corresponding to respective ones of those layers. By way of example, the network node may be a base station, a clay, or another wireless device.