Radio Base Station Resource Allocation Iterative Control
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Solution Overview
Problem
In cellular radio communication systems, efficiently allocating shared radio resources among multiple users is challenging due to limitations in hardware and software resources, particularly in scheduling processes that require balancing control channel resources with data transmission resources, leading to suboptimal use of physical downlink control channel capacity.
Innovation Solution
A method and apparatus for allocating shared radio resources involve forming a set of candidate UEs based on scheduling weights, identifying the cell with the most urgent need, requesting control channel resources, and iteratively allocating resources to ensure both hardware and control channel resources are assigned efficiently, thereby optimizing the use of common processing resources and control channel capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If radio resources are shared among multiple users based on immediate need, then resource utilization efficiency is improved, but control channel capacity becomes insufficient leading to suboptimal allocation
Solution Approach 1:
The patent segments the resource allocation process into two distinct phases: control channel resource allocation and data transmission resource allocation. The control channel resources are allocated first to a limited set of candidate users, and then data transmission resources are allocated to those same users. This segmentation prevents the control channel from being overwhelmed by too many users simultaneously requesting resources, while still allowing efficient data resource utilization among the selected users.
Solution Approach 2:
The patent performs control channel resource allocation as a preliminary action before data transmission resource allocation. By first identifying candidate users who have been granted control channel resources, and then allocating data resources to these pre-selected users, the system ensures that control channel capacity is not exceeded while maintaining high data resource utilization efficiency among the selected user group.
2Productivity
If more cells are introduced to handle increasing traffic load, then system capacity is improved, but difficulty in finding base station sites increases
Solution Approach 1:
The patent enables a single base station to serve multiple cells (Cell 1, Cell 2, Cell 3) with shared processing resources. The base station's processing unit can dynamically allocate resources to users across different cells, making the base station a universal platform that handles traffic for multiple cells without requiring separate base stations for each cell. This multi-functionality increases system capacity while avoiding the need for additional base station sites.
Solution Approach 2:
The patent merges the resource allocation functions of multiple cells into a single base station. Instead of having separate base stations for Cell 1, Cell 2, and Cell 3, the invention combines them under one base station that shares processing resources and coordinates resource allocation across all cells. This consolidation achieves the capacity needed for multiple cells without the physical expansion of base station infrastructure.
3Ease of operation
If control channel resources are allocated without considering data transmission resources, then control channel allocation is simplified, but resource assignment efficiency deteriorates
Solution Approach 1:
The patent performs control channel resource allocation as a preliminary step before data transmission resource allocation. The base station first identifies candidate users and allocates control channel resources to them, then proceeds to allocate data transmission resources to these same users. This preliminary action maintains operational simplicity by keeping the control channel allocation process separate and sequential, while improving overall efficiency by ensuring that data resources are allocated to users who have already been granted control channel access.
Solution Approach 2:
The patent segments the resource allocation into distinct phases: first allocating control channel resources to candidate users, then allocating data transmission resources to those users. This segmentation maintains the simplicity of control channel allocation while ensuring that data resources are efficiently assigned to the pre-selected candidate group, avoiding the complexity of simultaneous multi-resource allocation.
Data Source
AI summary
Methods and apparatus for controlling signaling processing resources that are shared among two or more cells at a base station, such that signaling processing resources are efficiently utilized and such that resources assigned for sending uplink grants and downlink assignments on a downlink control channel that is shared among the mobile terminals in each cell is also efficiently used. An example method is an iterative process whereby a manager controlling the assignments of resources on the downlink control channel among the mobile terminals on each cell is requested to provide resource to a restricted number of mobile terminals for a cell. This is repeated for each cell until a total processing capacity for the site is reached. The restriction in the number of mobile terminals included in each request relates to the total capacity for processing remaining on the site.