Radio Link Transmission Adaptive Modulation Bandwidth
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Solution Overview
Problem
Existing wireless communication systems inefficiently utilize bandwidth by applying uniform radio protection schemes to all traffic types, including those that do not require protection, leading to ineffective bandwidth utilization.
Innovation Solution
A method and apparatus that transmit data over multiple radio channels using different frequencies, polarizations, and adaptive modulation schemes, where only necessary traffic is duplicated, allowing for efficient bandwidth use by applying Adaptive Modulation and Coding independently on each link.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uniform radio protection schemes are applied to all traffic types, then availability is guaranteed for all traffic, but bandwidth utilization becomes inefficient
Solution Approach 1:
The patent segments traffic into protected and unprotected categories, applying protection only to critical traffic types (circuit-switched and protected packet traffic) while leaving best effort traffic unprotected. This segmentation allows the system to guarantee availability for essential services while avoiding the bandwidth waste of protecting all traffic uniformly.
Solution Approach 2:
The patent applies different protection qualities to different traffic types. Critical traffic receives full protection with duplication on both working and standby links, while non-critical best effort traffic receives no protection. This local differentiation optimizes the balance between reliability and bandwidth efficiency for each traffic class.
2Productivity
If 1+1 working standby configuration is used with adaptive modulation, then spectral efficiency is improved, but complexity of managing different modulation schemes increases
Solution Approach 1:
The patent implements adaptive modulation and coding dynamically on each radio link independently, allowing the modulation scheme to change in response to varying channel conditions. This dynamic adaptation maximizes spectral efficiency by using higher order modulation when conditions permit while falling back to more robust modulation when needed, without requiring complex centralized management.
Solution Approach 2:
The patent applies adaptive modulation independently to each radio link (working and standby), allowing each link to be optimized for its specific channel conditions. This segmentation of the modulation control enables simpler management compared to a unified approach, as each link can adapt autonomously based on local conditions.
3Reliability
If all traffic is duplicated in protection schemes, then availability is maximized, but the capacity for unprotected data is reduced
Solution Approach 1:
The patent segments traffic into protected and unprotected portions, duplicating only the protected traffic (circuit-switched and protected packet traffic) while allowing best effort traffic to use the full capacity of the active link without duplication. This segmentation enables the system to maximize availability for critical services while preserving capacity for non-critical data.
Solution Approach 2:
The patent applies protection only partially to the traffic stream, duplicating only the necessary protected traffic portions while allowing unprotected best effort traffic to transmit without duplication. This partial protection approach provides sufficient availability for critical services while avoiding the excessive resource consumption that would result from protecting all traffic.
Data Source
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AI summary
A radio link transmission method that comprises transmitting data on a plurality of radio channels. The method allocates a portion of the capacity of each radio channel for transmission of identical data on the plurality of radio channels. The remaining capacity of each radio channel is allocated for transmission of unique data, which is different for each radio channel. The method further transmits the identical data on each radio channel of the plurality of radio channels, and transmits the unique data in the respective radio channels of the plurality of radio channels.