Dynamic Resource Block Group Allocation for Wireless Throughput
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Solution Overview
Problem
The existing wireless communication systems face a tradeoff between the multi-user diversity effect and scheduling overhead, with a fixed frequency block count used for all mobile stations, limiting achievable throughput due to increased Peak to Average Power Ratio (PAPR) and higher overhead in scheduling information.
Innovation Solution
A method to dynamically set the number of resource block groups for each mobile station based on communication environment and system information, optimizing the frequency block count to balance multi-user diversity and scheduling overhead, while managing PAPR by limiting the frequency block count on a per-station or per-group basis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the frequency block count is increased to enhance multi-user diversity effect, then system throughput is improved, but scheduling overhead and PAPR increase
Solution Approach 1:
The system segments mobile stations into multiple groups based on their channel characteristics and quality requirements. Each group is assigned a specific frequency block count, allowing the system to optimize resource allocation for different station types while maintaining manageable scheduling overhead. The base station performs group-based scheduling rather than individual station scheduling, reducing the complexity of managing frequency block allocations across all stations.
Solution Approach 2:
The patent dynamically adjusts the frequency block count parameter based on the group to which each mobile station belongs. By changing this parameter adaptively according to station group characteristics and channel conditions, the system achieves higher throughput for stations that benefit from multiple frequency blocks while limiting PAPR and scheduling overhead for stations where these parameters become problematic.
2Productivity
If the frequency block count is increased for all mobile stations, then multi-user diversity effect is enhanced, but PAPR becomes unmanageable
Solution Approach 1:
The system applies different frequency block count configurations to different mobile station groups based on their local characteristics. Mobile stations with good channel conditions and low PAPR tolerance are assigned fewer frequency blocks, while stations with excellent channel conditions can utilize more frequency blocks. This localized optimization allows the system to enhance multi-user diversity where beneficial while maintaining PAPR control for stations that are sensitive to it.
Solution Approach 2:
The frequency block count is made dynamic and adaptive rather than fixed for all stations. The base station continuously monitors channel conditions, station group compositions, and PAPR levels, adjusting the frequency block assignments in real-time. This dynamic approach allows the system to respond to changing conditions and optimize the balance between throughput enhancement and PAPR management.
Data Source
AI summary
A base station includes a transmitter configured to transmit a downlink control information to a user equipment, the downlink control information being generated based on one of (1) a first uplink allocation information indicating a first frequency block corresponding to a first plurality of subcarriers which are contiguous in frequency and (2) a second uplink allocation information indicating a second frequency block corresponding to a second plurality of subcarriers which are contiguous in frequency and a third frequency block corresponding to a third plurality of subcarriers which are contiguous in frequency, the second frequency block and the third frequency block being separated in frequency.