Resource Allocation Method for Mobile Communication Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In mobile communication systems, existing resource allocation methods struggle to efficiently combine Frequency Diversity Scheduling (FDS) and Frequency Selective Scheduling (FSS) methods, leading to suboptimal resource utilization and increased interference between cells.
Innovation Solution
A method that combines FDS and FSS by using Distributed Virtual Resource Blocks (DVRBs) and Localized Virtual Resource Blocks (LVRBs), reducing the number of bits required for resource allocation information transmission and optimizing system efficiency by randomizing interference between cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If FDS and FSS methods are multiplexed in the subframe, then resource allocation efficiency is improved, but the number of bits for resource allocation information increases
Solution Approach 1:
The patent segments resource blocks into localized virtual resource blocks (LVRBs) for FSS and distributed virtual resource blocks (DVRBs) for FDS. This segmentation allows independent indication of resource allocation types and positions, enabling efficient multiplexing while controlling signaling overhead through separate but structured indication mechanisms.
Solution Approach 2:
The patent introduces a new dimension by defining virtual resource blocks that map to physical resource blocks through different mapping rules. LVRBs map to contiguous physical resource blocks while DVRBs map to distributed physical resource blocks. This dimensional transformation enables the system to indicate both allocation type and position without linearly increasing bit requirements.
2Reliability
If FSS method is used for data transmission, then reception capability is improved through advantageous fading, but interference between cells increases
Solution Approach 1:
The patent applies local quality by allowing different user equipments to use different resource block allocation strategies based on their specific channel conditions. User equipments experiencing advantageous fading can use FSS with LVRBs for high reception capability, while others use FDS with DVRBs, creating localized optimization without system-wide interference issues.
Solution Approach 2:
The patent enables user equipments to skip the interference-prone FSS approach when channel conditions are not favorable, directly using FDS with DVRBs that distribute resources across frequency. This skipping mechanism allows user equipments to bypass the interference problem while maintaining the option to use FSS when beneficial.
3Reliability
If FDS method is used for data transmission, then reception capability is improved through frequency diversity, but resource allocation complexity increases
Solution Approach 1:
The patent changes the parameter of resource block distribution by defining DVRBs with specific mapping rules that distribute virtual resource blocks across non-contiguous physical resource blocks. This parameter change enables frequency diversity gain while maintaining structured allocation that reduces scheduling complexity compared to arbitrary distributed allocation.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a method for receiving data in a mobile communication system, the method comprising: receiving, by a user equipment, a control channel signal including first information and second information, the first information indicating one of N resource block (RB) sets, and the second information including a bitmap indicating one or more RBs allocated in the indicated RB set; and receiving, by the user equipment, the data using the one or more allocated RBs, wherein: the indicated RB set comprises a plurality of resource block groups (RBGs) in which neighboring RBGs are not consecutive in a frequency region; a size of an RBG is N consecutive RBs; and N is an integer equal to or greater than 2.