Narrowband Region Definition for eMTC Resource Utilization
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Solution Overview
Problem
Current wireless communication systems face challenges in defining narrowband regions for enhanced machine type communication (eMTC) within wider system bandwidths, particularly in minimizing empty resource blocks and optimizing interference reduction for low-cost, low-rate devices.
Innovation Solution
The method involves identifying and communicating using narrowband regions within a wider system bandwidth based on available resources, with techniques to define these regions such as aligning center 6 resource blocks for synchronization and extending regions to align with wideband boundaries, and employing frequency hopping patterns based on initially identified narrowband regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If narrowband regions are defined within wider system bandwidth for eMTC devices, then interference is reduced and coverage is enhanced, but empty resource blocks increase and spectral efficiency decreases
Solution Approach 1:
The patent changes the parameter of resource block allocation by extending narrowband region definitions to align with wideband bandwidth edges. This parameter change ensures that resource blocks at the boundaries of wideband allocations are fully utilized by eMTC devices, eliminating empty resource blocks and improving spectral efficiency while maintaining the interference reduction and coverage enhancement benefits of narrowband operation.
2Productivity
If narrowband regions are defined to align with wideband boundaries, then resource block utilization is optimized and empty blocks are minimized, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-defining narrowband region boundaries to align with wideband bandwidth edges through standardized parameter configurations. This preliminary alignment is established through pre-defined parameter sets that indicate narrowband region locations, allowing eMTC devices to automatically identify and utilize resource blocks without complex real-time calculations, thereby optimizing resource block utilization while minimizing device complexity.
3Object-generated harmful factors
If frequency hopping patterns are employed based on initial narrowband regions, then interference reduction is enhanced, but loss of time increases due to hopping transitions
Solution Approach 1:
The patent implements periodic action through frequency hopping patterns where eMTC devices transition between different narrowband regions at predetermined intervals. These periodic hops are configured to occur at specific time instances, allowing the system to achieve interference diversification benefits while managing time loss through optimized hopping schedules that balance interference reduction with communication continuity.
Data Source
AI summary
Aspects of the present disclosure provide a method performed by a wireless device. The method generally includes identifying one or more narrowband regions within a wider system bandwidth, based on an amount of available resources in the system bandwidth, and communicating using at least one of the identified narrowband regions.