TDD Subframe Resource Scheduling for Interference Management
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Solution Overview
Problem
Existing resource scheduling methods in wireless communication systems face limitations in spectral efficiency due to limited resource utilization and waste, particularly in implementing full-duplex technology and other spectral efficiency improvement methods, which struggle with inter-UE interference and require specific hardware capabilities.
Innovation Solution
A resource scheduling method that involves dividing subframes into different subsets based on time division duplex configurations, performing channel quality and interference measurements, and reporting these measurements to the eNB for adaptive resource scheduling, allowing for improved resource allocation and utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex technology is implemented to double throughput, then spectral efficiency is improved, but self-interference cancellation capability is required which increases device complexity
Solution Approach 1:
The patent segments the system into two groups: eNBs with full-duplex capability and UEs without self-interference cancellation capability. This segmentation allows the complex full-duplex functionality to be concentrated in the base station while keeping user equipment simple, resolving the contradiction between improved throughput and reduced device complexity.
2Productivity
If UL MU-MIMO is used to improve spectral efficiency, then spatial multiplexing is achieved, but inter-flow interference processing complexity increases at the eNB
Solution Approach 1:
The patent introduces an intermediary measurement mechanism where UEs measure and report uplink interference conditions to the eNB. This intermediary step provides the eNB with accurate interference information, enabling it to process inter-flow interference more efficiently in UL MU-MIMO operations, thus resolving the contradiction between improved spectral efficiency and reduced processing complexity.
3Productivity
If eNB uses full duplexing to multiplex UEs on same resource, then resource utilization is improved, but UEs must be spatially separated to avoid inter-UE interference
Solution Approach 1:
The patent implements a feedback mechanism where UEs measure the actual interference they experience and report this information to the eNB. The eNB uses this feedback to dynamically adjust resource allocation and scheduling decisions, allowing it to multiplex UEs on the same resource without requiring strict spatial separation, thus resolving the contradiction between improved resource utilization and reduced spatial separation requirements.
4Productivity
If existing resource scheduling methods are used, then scheduling is simple, but resource utilization is limited causing spectral efficiency degradation
Solution Approach 1:
The patent introduces dynamic resource scheduling where the eNB adjusts resource allocation based on real-time interference measurements and reports from UEs. This dynamic approach allows the system to adapt to changing conditions and maximize spectral efficiency, resolving the contradiction between improved spectral efficiency and increased scheduling complexity through intelligent, condition-based decision making.
Data Source
AI summary
The present invention discloses a resource scheduling method and an apparatus, and is applied to the field of communications technologies. The method includes: receiving, by a terminal UE, a first time division duplex TDD configuration and a second time division duplex TDD configuration; determining the first TDD configuration or the second TDD configuration as a target TDD configuration corresponding to the UE; dividing, based on the target TDD configuration, subframes corresponding to the UE into a first subframe subset, a second subframe subset, and a third subframe subset; and performing channel quality state measurement based on the first subframe subset, the second subframe subset, and the third subframe subset, and reporting a measurement result of the channel quality state measurement to an eNB, so that the eNB schedules a subframe resource according to the measurement result.