Heterogeneous Network Spectrum Interpretation via Carrier Extension
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Solution Overview
Problem
In heterogeneous wireless communication networks, interference between cells of different power classes degrades performance, particularly due to overlapping resource allocations for downlink and uplink communications, which existing technologies struggle to manage effectively.
Innovation Solution
The method involves allocating resources of a first component carrier for a physical downlink shared channel and extending it with non-overlapping resources from a second component carrier, ensuring that these extended resources do not interfere with control regions of other cells, thereby optimizing spectrum usage and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resources of component carriers are allocated for downlink shared channel, then data transmission capacity is improved, but interference with control regions of other cells increases
Solution Approach 1:
The patent segments the component carrier resources into distinct regions: a first portion is allocated for downlink shared channel extension, while a second portion is reserved for control regions. This segmentation allows simultaneous operation of data transmission and control signaling without mutual interference, resolving the contradiction between capacity improvement and interference prevention.
Solution Approach 2:
The patent extends the downlink shared channel into the frequency domain by utilizing a second component carrier. This dimensional expansion allows the system to increase data transmission capacity without overlapping with control regions in the time domain, thereby maintaining both productivity and reducing harmful interference.
2Productivity
If multiple component carriers are used to extend downlink shared channel, then spectrum utilization is improved, but system complexity increases
Solution Approach 1:
The base station performs multiple functions using the same resource allocation mechanism: it allocates resources for downlink shared channel extension, identifies control regions, and manages interference coordination across multiple component carriers. This multi-functionality approach improves spectrum utilization while managing complexity through unified control.
Solution Approach 2:
The patent implements feedback mechanisms where the base station receives feedback information about resource allocation and interference conditions. This feedback enables dynamic adjustment of resource allocation across component carriers, optimizing spectrum utilization while simplifying complex coordination through adaptive control based on real-time conditions.
Data Source
AI summary
Certain aspects of the present disclosure provide for the application of extension carriers and carrier segments in the context of heterogeneous networks. As described herein, different parts of the spectrum may be interpreted differently by different type of nodes.