Coordinated Multi-Node Transmission Scheduling
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Solution Overview
Problem
Existing communication systems in heterogeneous networks face challenges in optimizing throughput due to mutual interference between cells, with existing methods like almost blank subframes and cell range extension lacking flexibility in adjusting to different scheduling goals and scenarios.
Innovation Solution
A method for coordinated multi-node transmission where user equipment (UE) feeds back channel state indicator information to coordinating nodes, allowing each node to perform scheduling and selectively serve UEs, enabling flexible adjustment and optimization of radio communications performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If almost blank subframes or cell range extension are used to optimize system throughput, then interference between cells is reduced, but the system loses flexibility in adjusting to different scheduling goals and scenarios
Solution Approach 1:
The patent implements dynamic scheduling where the network can flexibly select between different transmission modes (joint transmission, coordinated beamforming, or independent transmission) based on real-time channel conditions and scheduling goals. This dynamic adaptability allows the system to optimize throughput for different scenarios without being constrained by fixed interference management schemes like ABS
Solution Approach 2:
The patent changes the parameter of transmission coordination by introducing configurable coordination indicators that control whether nodes transmit jointly, coordinate beams, or transmit independently. This parameter-based control enables flexible adjustment of system behavior to meet different scheduling goals while maintaining high throughput
2Productivity
If centralized scheduling coordination is used for CoMP transmission, then scheduling decisions are optimized, but the complexity of scheduling coordination increases significantly
Solution Approach 1:
The patent segments the centralized scheduling function into distributed scheduling decisions at each node. Each coordinating node independently makes scheduling decisions based on local channel state information and coordination indicators, eliminating the need for complex centralized coordination while maintaining CoMP transmission benefits
Solution Approach 2:
Each coordinating node performs self-scheduling by autonomously determining transmission parameters based on received coordination indicators and local channel conditions. This self-service approach reduces coordination complexity while achieving optimized CoMP transmission through distributed intelligence
Data Source
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AI summary
Embodiments of the present invention provide a method and an apparatus for coordinated multi-node transmission, relate to the field of communications technologies, which are invented to perform a flexible adjustment on a communications system according to different scheduling goals. The method for coordinated multi-node transmission includes: acquiring, by a user equipment, channel state indicator information of each coordinating node; feeding back, by the user equipment, all information or a part of information in the acquired channel state indicator information to a base station, so that each coordinating node performs, according to the channel state indicator information that has been fed back, scheduling on the user equipment and/or one or more other user equipments served by each coordinating node; and if the user equipment is scheduled, receiving, by the user equipment, scheduling result notification information sent by the base station, and receiving, by the user equipment according to the scheduling result notification information, data transmitted by a base station that corresponds to a coordinating node serving the user equipment. The present invention is applicable to a radio communications system.