LTE Cell Structure Zero Padding for Bandwidth Utilization
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Solution Overview
Problem
In wireless communications, standard cell structures often have larger bandwidths than needed, leading to underutilization of carrier bandwidth, as they cannot be adjusted to match the specific carrier bandwidth, resulting in unused portions of spectrum.
Innovation Solution
Selecting a larger standard cell structure and zero-padding unused resource blocks to match the carrier bandwidth, allowing only the necessary bandwidth to be used for communication, thereby maximizing bandwidth utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a standard cell structure with fixed bandwidth is used, then the communication protocol compatibility is maintained, but the carrier bandwidth utilization is reduced due to mismatch between standard structure bandwidth and available carrier bandwidth
Solution Approach 1:
The standard cell structure is segmented into multiple resource blocks, where only the necessary portion matching the carrier bandwidth is activated. This allows the system to use a standard cell structure template while effectively utilizing only the required bandwidth portion, thereby improving bandwidth utilization without changing the overall standard structure framework.
Solution Approach 2:
The cell structure is made dynamic by selectively activating or deactivating resource blocks based on the available carrier bandwidth. This dynamic configuration allows the system to adapt the standard cell structure to different bandwidth scenarios, improving adaptability while maintaining protocol compatibility.
2Loss of energy
If the standard cell structure bandwidth is reduced to match the carrier bandwidth, then the bandwidth utilization is improved, but the standard cell structure cannot be used directly requiring modification
Solution Approach 1:
Instead of modifying the entire standard cell structure, only the necessary resource blocks are activated to match the carrier bandwidth. This partial action approach reduces spectrum waste while keeping the cell structure configuration process simple, as it involves selective activation rather than complete restructuring.
3Productivity
If noncontiguous spectrum chunks are aggregated, then the total bandwidth utilization is maximized, but the resource allocation complexity increases
Solution Approach 1:
Multiple noncontiguous spectrum chunks are merged into a unified cell structure framework. By aggregating these chunks and managing them through a single standardized interface, the system maximizes total bandwidth utilization while keeping resource allocation manageable through unified control mechanisms.
Data Source
AI summary
The invention is directed to methods and systems for maximizing bandwidth utilization. Once a mobile device has attempted to communicate data through an LTE-based wireless communications network, a carrier bandwidth of a carrier is determined. A standard cell structure is then selected based on the carrier bandwidth such that the standard cell structure is capable of operating at a larger bandwidth than the carrier bandwidth. One or more resource blocks are identified that are not needed to communicate data to and from the mobile device. These resource blocks are zero padded. An identification of these unused resource blocks is communicated to the master information block, which broadcasts this information to the mobile device.