Network Device Resource Block Allocation for LTE Bandwidth-Reduced Low-Complexity User Equipment
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Solution Overview
Problem
In LTE communications systems, resource utilization in system bandwidth is low due to the inability to flexibly allocate resources to Bandwidth-Reduced Low-Complexity User Equipment (BL UE) and Coverage Enhancement User Equipment (CE UE), as they can only be allocated resources within a narrowband, leading to fragmented resources that conventional UE cannot use.
Innovation Solution
A data transmission method that allows network devices to allocate resource blocks outside the narrowband to BL/CE UE by using additional bits in downlink control information, enabling flexible resource allocation based on load status and reducing resource fragmentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If resource blocks are allocated only within a narrowband to BL/CE UE, then the allocation method is simple and compatible with existing narrowband structures, but resource utilization in system bandwidth is low and resource fragmentation occurs
Solution Approach 1:
The patent segments the resource allocation indication into two parts: a narrowband index indicating the narrowband where resource blocks are located, and a resource block allocation indication indicating the specific resource blocks. This segmentation allows flexible allocation across the entire system bandwidth while maintaining compatibility with narrowband-based BL/CE UE operations, thereby improving resource utilization without sacrificing allocation simplicity
Solution Approach 2:
The patent creates a universal resource allocation mechanism that can allocate resource blocks to both conventional UE and BL/CE UE within the same system bandwidth. By allowing resource blocks to be indicated outside the narrowband, the system achieves multi-functionality where the same allocation mechanism serves different UE types, improving overall resource utilization while maintaining ease of operation
2Ease of operation
If resource blocks are allocated only within a narrowband to BL/CE UE, then the allocation process is straightforward, but resource fragmentation occurs and remaining resources cannot be used by conventional UE
Solution Approach 1:
The patent adds another dimension to resource allocation by introducing a narrowband index that operates independently from the resource block allocation indication. This dimensional separation allows the system to specify which narrowband contains the resource blocks and which specific blocks within that narrowband, enabling flexible resource distribution across the entire system bandwidth while maintaining straightforward allocation processes
3Adaptability or versatility
If additional bits are added to downlink control information for resource block allocation, then resource allocation flexibility is improved, but downlink control information overhead increases
Solution Approach 1:
The patent merges the narrowband index indication and resource block allocation indication into a unified downlink control information structure. By combining these two indication elements, the system achieves flexible resource allocation across the entire system bandwidth while minimizing control information overhead through efficient encoding and shared interpretation between conventional UE and BL/CE UE
Data Source
AI summary
This application describes a data transmission method, a communications apparatus, a storage medium, and a program product. In one example implementation, a network device is no longer confined to allocating an RB only in a narrowband to BL/CE UE, but can also allocate an RB outside the narrowband to the BL/CE UE, so that resources are flexibly allocated by the network device to the BL/CE UE. In this way, when the network device allocates resources to the BL/CE UE in one subframe, a quantity of fragmented resources that cannot be used by conventional UE in remaining resources in a system bandwidth can be reduced, so that the remaining resources can be used by other conventional UE to a maximum extent, thereby improving system resource utilization.