Fractional Resource Block Allocation for EVS Spectrum Efficiency
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Solution Overview
Problem
The existing resource allocation method in LTE systems results in a waste of user spectrum resources due to the allocation of a full resource block for EVS voice packets, even when only a fraction is needed, as the minimum allocation granularity is always per resource block.
Innovation Solution
A method that allows for the allocation of fractional resource blocks (FRBs) to user equipment, where the resource allocation information and unit indication are notified by the base station, enabling efficient allocation of resources based on the size of EVS voice packets and channel conditions, thereby optimizing spectrum utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a full resource block is allocated to user equipment for EVS voice packet transmission, then the minimum allocation granularity is maintained, but spectrum resources are wasted when only a fraction of the resource block is needed
Solution Approach 1:
The resource block is divided into multiple fractional resource blocks (e.g., 1/2 RB, 1/4 RB, 1/8 RB) to enable finer-grained resource allocation. This segmentation allows the base station to allocate only the precise amount of spectrum resources needed for EVS voice packet transmission, avoiding the waste of allocating a full resource block when only a fraction is required.
2Productivity
If fractional resource blocks are allocated to match the size of EVS voice packets, then spectrum utilization is improved, but the complexity of resource allocation increases
Solution Approach 1:
The system dynamically selects the appropriate fractional resource block size (1/2 RB, 1/4 RB, 1/8 RB, or full RB) based on the actual size of the EVS voice packet and channel conditions. This dynamic adaptation allows the resource allocation to match the precise needs of each transmission, improving spectrum utilization without requiring complex fixed-structure allocations.
3Adaptability or versatility
If the resource allocation unit is reduced from one resource block to fractional resource blocks, then resource allocation flexibility is improved, but the signaling overhead increases
Solution Approach 1:
The resource allocation indication is enhanced by adding a fractional resource block indication field that specifies which fraction (1/2, 1/4, 1/8, or full) of the indicated resource blocks should be allocated. This localized enhancement to the signaling structure provides fine-grained control over resource allocation without requiring a complete redesign of the resource allocation protocol.
Data Source
AI summary
A resource allocation method to resolve a problem that a transport block of a typical enhanced voice service (EVS) scenario in an air interface is much smaller than a transport block of a conventional adaptive multi rate (AMR), and use of a resource allocation method in the existing long term evolution (LTE) causes a waste of user spectrum resources such that spectrum utilization in an EVS scenario can be improved. The method includes determining resource allocation information and resource allocation block indication information, where the resource allocation information includes information indicating at least one fractional resource block (FRB) allocated to user equipment, and the resource allocation block indication information indicates that a resource allocation block is the FRB, where a resource occupied by the FRB is less than one RB, and notifying the user equipment of the resource allocation information and the resource allocation block indication information.