Master-Slave Base Station Resource Allocation for Cooperative Transmission
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently allocating resources among multiple base stations for cooperative transmission, leading to interference and limitations in providing high-speed data services.
Innovation Solution
A resource allocation method where a master base station and slave base stations negotiate and allocate radio resources cooperatively, with the master station determining resource allocation and the slave stations accepting or rejecting requests based on available resources and interference considerations, allowing for efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a centralized control entity determines radio resource allocation for multiple base stations, then resource allocation coordination is improved, but system complexity and control overhead increase
Solution Approach 1:
The patent segments the centralized control function by designating one base station as master and others as slaves. The master base station handles resource allocation decisions for the cooperative set, while slave base stations execute these decisions. This segmentation eliminates the need for a separate centralized control entity while maintaining coordinated resource allocation across multiple base stations.
2Object-affected harmful factors
If base stations make independent resource allocation decisions to minimize interference, then interference reduction is improved, but ability to serve mobile station using common radio resource deteriorates
Solution Approach 1:
The patent merges the resource allocation decisions of multiple base stations by having them form a cooperative set with a designated master base station. Within this cooperative set, base stations coordinate their resource allocation through the master, allowing them to use common radio resources for serving the same mobile station while minimizing interference through coordinated scheduling.
3Productivity
If slave base stations accept all resource allocation requests from master base station, then resource utilization is improved, but interference among base stations increases
Solution Approach 1:
The patent introduces dynamic resource allocation where slave base stations can accept or reject resource allocation requests from the master base station based on current channel conditions and interference levels. This dynamic approach allows the system to adapt resource allocation in real-time, maximizing resource utilization when conditions permit while avoiding allocations that would cause excessive interference.
4Object-affected harmful factors
If resource allocation is negotiated between master and slave base stations, then interference minimization is improved, but resource allocation overhead increases
Solution Approach 1:
The patent implements preliminary resource allocation negotiation between the master and slave base stations before actual data transmission. The master base station proposes resource allocations to slave base stations in advance, allowing them to evaluate potential interference and agree on allocations before they are executed. This preliminary action prevents conflicts and reduces the need for re-negotiation during transmission.
Data Source
AI summary
A resource allocation method and apparatus whereby a master base station of a virtual cell having at least one slave base station for cooperative resource allocation to a mobile station in a wireless communication system are provided. The resource allocation method includes transmitting, to the slave base station, a resource allocation request message including information on the resource to be allocated to the mobile station, receiving a resource allocation response message including one of accept and reject indications to the resource allocation request from the slave base station, transmitting, to the mobile station, a resource allocation information including a result of resource allocation negotiation with the slave base station, and transmitting data to the mobile station in cooperation with the slave base station based on the resource allocation information.