Guard Band Utilization for LTE MTC Throughput
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Solution Overview
Problem
Existing LTE communications networks face challenges in providing improved data transmission for low-end Machine-Type Communications (MTC) devices without requiring significant changes to the existing LTE standard, particularly in managing overload and ensuring efficient bandwidth utilization.
Innovation Solution
The method involves allocating a part of the guard band region for transmission and reception, allowing low-cost, low-band MTC devices to operate by using additional physical resource blocks in the guard band, and dynamically switching between the supported frequency band and the guard band region based on network overload, thereby enhancing data throughput and reducing overload probability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If guard band region is used for additional transmission, then network throughput is improved, but interference with adjacent frequency bands increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the transmission power of subcarriers located in the guard band region. When the guard band is activated for additional data transmission, the power of edge subcarriers is reduced to minimize interference with adjacent frequency bands. This power adjustment parameter allows the system to utilize the guard band for increased throughput while controlling the harmful interference effect.
2Adaptability or versatility
If low-end MTC devices are supported without significant LTE standard changes, then device compatibility and cost are improved, but data transmission capability is limited
Solution Approach 1:
The patent extends the frequency dimension by utilizing the guard band region, which is traditionally unused or used for protection purposes. By allocating additional physical resource blocks in the guard band region, the system provides low-end MTC devices with more bandwidth and improved data transmission capability without requiring changes to the core LTE standard or additional hardware, thus maintaining compatibility while enhancing performance.
3Reliability
If dynamic switching between frequency band and guard band region is implemented, then overload probability is reduced, but system complexity increases
Solution Approach 1:
The patent implements dynamic switching between the supported frequency band and the guard band region based on network load conditions. The system monitors network overload indicators and dynamically activates or deactivates the guard band for data transmission. This dynamic adaptation allows the system to reduce overload probability by utilizing additional bandwidth when needed, while keeping the system relatively simple by using existing LTE infrastructure and control mechanisms.
Data Source
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AI summary
A method for operating a transceiver circuit includes receiving an information indicating at least one of a transmission and a reception in a guard band region of a frequency band supported by a communications network and allocating at least a part of the guard band region of the supported frequency band of the communications network for at least one of a transmission and a reception of at least one physical channel.