Flexible Subframe Resource Coordination in TDD Networks
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Solution Overview
Problem
In wireless communication networks, especially in time division duplex (TDD) mode, flexible subframe configuration leads to cross-subframe interference between cells due to lack of coordination, resulting in inefficient resource allocation and increased interference.
Innovation Solution
A method for determining flexible subframe resource configurations in each cell based on subframe information, prioritizing subframes, and coordinating resource usage across cells to minimize interference, where each cell uses flexible subframes for data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible TDD subframe configuration is implemented in each cell independently, then service diversity and adaptability are improved, but cross-subframe interference between cells increases
Solution Approach 1:
The patent merges the resource configuration decisions of multiple cells by establishing a reference cell whose flexible subframe configuration is determined first, then using its configuration as a basis for configuring neighboring cells. This combining approach ensures coordinated resource allocation across cells while maintaining service adaptability.
Solution Approach 2:
The patent introduces an intermediary mechanism where the reference cell's subframe configuration acts as a mediator between service requirements and interference management. By configuring flexible subframes in the reference cell first and then deriving neighboring cell configurations from it, the system achieves both service diversity and interference coordination.
2Ease of operation
If resource configuration is performed only according to cell service requirements without coordination, then ease of operation is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent segments the resource configuration process into two parts: determining the reference cell's flexible subframe configuration based on service requirements, and then determining neighboring cell configurations based on the reference cell's configuration. This segmentation maintains operational simplicity while improving overall resource allocation efficiency through coordinated configuration.
3Device complexity
If idle resources are not used for interference coordination, then device complexity is reduced, but harmful factors increase
Solution Approach 1:
The patent applies self-service by having the reference cell's configuration automatically serve as the basis for neighboring cell configurations. The system uses its own determined configuration to guide the configuration of other cells, eliminating the need for complex external coordination mechanisms while effectively reducing interference through idle resource utilization.
Data Source
Figure 1A~1B
Figure 2
Figure 3A
AI summary
Embodiments of the present invention provide a resource configuration method and a resource configuration network device. The method includes: obtaining subframe information of each of multiple cells, where the subframe information of each of the multiple cells includes subframe configuration information and flexible subframe resource requirement information of each cell; and determining a flexible subframe resource configuration of each cell according to the subframe information of each of the multiple cells, where the flexible subframe resource configuration of each cell includes that each cell uses one or more of N flexible subframes to perform data transmission. A flexible subframe resource requirement of each of multiple neighboring cells is obtained, and flexible subframe resource configurations of the cells are coordinated in a distributed manner according to a subframe configuration and the flexible subframe resource requirement of each cell, so that cross-subframe interference that may exist between flexible subframes can be reduced.