Spectrum Pooling via Reservation Signals for Peak Rate
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Solution Overview
Problem
Current wireless communication systems face challenges in maximizing peak rate performance within licensed bands, as they often underutilize available spectrum resources, especially when one operator has light traffic while another has high demand, leading to inefficient spectrum allocation.
Innovation Solution
Implementing spectrum pooling mechanisms that allow secondary operators to utilize idle licensed spectrum of primary operators through reservation signals with cell-specific signature sequences, enabling time-partitioned sharing of frequency bands for both uplink and downlink communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spectrum is allocated exclusively to primary operators in licensed bands, then operator-specific service reliability is maintained, but spectrum utilization efficiency deteriorates when traffic demand varies
Solution Approach 1:
The patent merges spectrum resources across multiple operators by allowing secondary operators to access idle licensed spectrum of primary operators through carrier aggregation. This combining of spectrum resources increases overall utilization efficiency while maintaining operator-specific service reliability through controlled access mechanisms and reservation signals.
Solution Approach 2:
The patent implements dynamic spectrum access where secondary operators can dynamically utilize idle spectrum resources based on real-time traffic conditions. The system dynamically adjusts spectrum allocation through reservation request signals and response signals, allowing efficient utilization when primary operators have light traffic while ensuring reliability when needed.
2Productivity
If spectrum pooling is implemented to increase peak rate performance, then spectrum utilization efficiency improves, but system complexity increases due to coordination requirements
Solution Approach 1:
The patent applies preliminary action through reservation request signals sent by secondary operators before actual data transmission. The primary operator responds with reservation response signals indicating availability, allowing the secondary operator to proceed with carrier aggregation only when spectrum is confirmed available, thereby reducing coordination complexity through advance planning.
Solution Approach 2:
The patent implements feedback mechanisms where primary operators send reservation response signals to secondary operators based on their spectrum availability status. This feedback loop enables efficient spectrum pooling while managing complexity through automated decision-making based on real-time spectrum conditions.
3Power
If carrier aggregation combines licensed and unlicensed bands, then peak rate performance increases, but implementation complexity increases due to coordination across different wireless technologies
Solution Approach 1:
The patent applies local quality by allowing different operators to access different spectrum resources (licensed and unlicensed bands) based on their specific needs and availability. Secondary operators can selectively aggregate available spectrum resources rather than requiring uniform access across all bands, reducing implementation complexity while maintaining peak rate performance.
Data Source
AI summary
Wireless communications systems and methods related to spectrum pooling among multiple carriers or operators for peak rate performance improvement are provided. A first wireless communication device communicates, with a second wireless communication device, a first reservation request signal to reserve a transmission period in a frequency spectrum shared by a first operator and a second operator. The first wireless communication device and the second wireless communication device are associated with the first operator and a first cell. The first reservation request signal carries a request signature sequence associated with the first cell. The first wireless communication device communicates, with the second wireless communication device, data during the transmission period in the frequency spectrum shared by the first and second operators.