Wireless Resource Coordinator for Inter-Cell Interference Mitigation
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Solution Overview
Problem
In wireless communication systems, coordinated transmission to mitigate inter-cell interference is hindered by the need for ideal backhaul connections that cannot be guaranteed due to latency and suboptimal hardware configurations, leading to inefficient resource utilization between base stations.
Innovation Solution
A method and apparatus for scheduling coordinated transmission in wireless communication systems, which involves a resource coordinator that collects control information from base stations, determines transmission constraints based on buffer occupancy and channel state information, and transmits scheduling information to optimize resource use, enabling efficient interference control and cooperative communication even with transmission delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If coordinated transmission is implemented to mitigate inter-cell interference, then interference control performance is improved, but backhaul latency and transmission delays worsen the scheduling efficiency
Solution Approach 1:
The resource coordinator collects buffer occupancy information from base stations in advance and determines transmission constraints before actual data transmission occurs. This preliminary scheduling allows the system to prepare coordinated transmission patterns ahead of time, reducing the impact of backhaul latency during actual transmission.
Solution Approach 2:
The system dynamically adjusts transmission constraints based on real-time buffer occupancy states and channel conditions. The resource coordinator continuously monitors and updates scheduling decisions, allowing the coordinated transmission to adapt to changing network conditions and minimize the impact of variable backhaul delays.
2Object-affected harmful factors
If ideal backhaul connections are required for coordinated transmission, then interference mitigation performance is improved, but system adaptability to real-world network conditions deteriorates
Solution Approach 1:
Each base station autonomously reports its buffer occupancy state to the resource coordinator, and the coordinator independently determines transmission constraints without requiring complex real-time coordination protocols. This self-service approach reduces dependency on ideal backhaul connections and allows the system to function effectively in real-world network environments.
Solution Approach 2:
The resource coordinator acts as an intermediary that collects necessary information from base stations and distributes scheduling decisions, reducing the need for direct real-time communication between base stations. This intermediary approach tolerates backhaul latency better than direct peer-to-peer coordination.
3Productivity
If rapid information exchange between base stations is implemented, then coordinated transmission efficiency is improved, but device complexity and implementation difficulty increase
Solution Approach 1:
The system extracts only the essential information (buffer occupancy state) needed for coordinated transmission scheduling and transmits this minimal data set between base stations and the resource coordinator. This extraction approach reduces the complexity of information exchange while maintaining coordinated transmission efficiency.
Solution Approach 2:
The system changes the parameter being exchanged from complex real-time channel state information to simpler buffer occupancy indicators. This parameter simplification reduces the complexity of backhaul communication while still enabling effective coordinated transmission scheduling.
Data Source
AI summary
Method and apparatus for scheduling coordinated transmission in a wireless communication system are provided. According to various embodiments of the present disclosure, an apparatus for controlling resource utilization of a plurality of base stations comprises at least one transceiver configured to receive information about a buffer occupancy state from base stations performing a coordinated transmission, a processor configured to determine transmission states of the base stations based on the information about the buffer occupancy state. The at least one transceiver is further configured to transmit scheduling information comprising the transmission states.