Dynamic Radio Resource Control for Satellite Bandwidth Optimization
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Solution Overview
Problem
Current satellite communications systems inefficiently allocate radio resources, leading to suboptimal bandwidth usage among users due to static frequency allocation, resulting in excessive bandwidth consumption relative to throughput needs.
Innovation Solution
A device and method that dynamically adjust the modulation and coding scheme of radio links based on carrier-to-noise ratio measurements to select an optimal operating point that maximizes bandwidth utilization while ensuring a target bit rate, allowing for efficient sharing of radio resources across users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If static frequency allocation is used, then system simplicity is maintained, but bandwidth usage efficiency deteriorates
Solution Approach 1:
The patent implements dynamic resource allocation where the network controller continuously monitors channel conditions (C/N ratio, throughput) and adjusts MCS scheme and bandwidth allocation in real-time. This transforms the static frequency allocation into a dynamic system that adapts to changing channel conditions, thereby improving bandwidth usage efficiency without excessive complexity increase through automated feedback mechanisms.
Solution Approach 2:
The patent changes key transmission parameters (MCS scheme, bandwidth allocation) based on measured channel conditions. By dynamically adjusting these parameters according to C/N ratio and throughput requirements, the system optimizes bandwidth usage efficiency while maintaining manageable complexity through standardized parameter sets and algorithms.
2Stability of the object's composition
If ACM strategy with fixed MCS scheme is used, then modulation stability is maintained, but spectrum utilization efficiency deteriorates
Solution Approach 1:
The patent makes the MCS scheme dynamic by selecting different modulation and coding schemes based on real-time channel conditions (C/N ratio measurements). This allows the system to maintain stability through controlled adaptation, adjusting the modulation order and coding rate dynamically to match channel quality, thereby improving spectrum utilization efficiency while maintaining reliable communication.
Solution Approach 2:
The patent implements feedback mechanisms where the network controller monitors channel conditions and throughput performance, then adjusts the MCS scheme accordingly. This closed-loop control ensures that modulation stability is maintained through systematic adaptation rather than random changes, improving spectrum utilization by selecting optimal MCS schemes based on actual channel conditions.
3Productivity
If variable bandwidth allocation is implemented, then resource optimization is improved, but system complexity increases
Solution Approach 1:
The patent implements variable bandwidth allocation by dynamically adjusting the frequency bandwidth assigned to each user based on channel conditions and throughput requirements. The network controller monitors C/N ratio and selects appropriate bandwidth allocations from predefined sets, optimizing resource utilization while managing complexity through standardized bandwidth options and systematic selection algorithms.
Solution Approach 2:
The patent transforms static bandwidth allocation into a dynamic system where bandwidth assignments are continuously adjusted based on real-time channel measurements and performance feedback. This dynamic allocation improves resource optimization by matching bandwidth resources to actual user needs and channel conditions, while controlling complexity through automated decision-making algorithms.
4Productivity
If maximum bandwidth is allocated to each user, then individual throughput is maximized, but overall system capacity deteriorates
Solution Approach 1:
The patent applies local quality optimization by allocating different bandwidth resources and MCS schemes to different users based on their specific channel conditions and throughput requirements. Instead of uniform maximum allocation, each user receives customized resource allocation optimized for their local channel characteristics, thereby maximizing individual throughput while improving overall system capacity through efficient differential resource distribution.
Solution Approach 2:
The patent dynamically adjusts transmission parameters (bandwidth, MCS scheme) for each user based on measured channel conditions. By changing these parameters adaptively rather than allocating maximum resources uniformly, the system maximizes individual throughput where channel conditions permit while conserving resources for other users, thereby increasing overall system capacity.
Data Source
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AI summary
The invention relates to a device for monitoring the radio resources (100) of a satellite communication system, said radio resources being used by user equipment (102) in order to transmit and receive digital data by means of radio links (103, 104), a radio link being associated with a current operating point used for data transmission, an operating point corresponding to a modulation and MCS coding scheme associated with a frequency bandwidth B, said links being implemented using at least one satellite (101) as a communications relay. The device includes means for storing a set of predetermined values of the carrier-to-noise ratio (C/N)req required to reach the various rate values D, said values corresponding to various operating points that can be selected for data transmission, for acquiring the values of the C/N ratio when receiving at maximum power, for deducing the acquired values of the C/N ratio corresponding to operating points other than the current operating point, and for selecting an optimum operating point by radio link such that C/N is greater than or equal to (C/N)req. The invention also relates to a method for monitoring the radio resources of a satellite communication system.