Control Channel Resource Segmentation for Mobile Station Capacity
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Solution Overview
Problem
Existing communication systems face challenges in efficiently configuring resources for control channels, leading to limited capacity and inability to increase the number of mobile stations that can be assigned to these channels.
Innovation Solution
The implementation of a communication system that utilizes coordinated communication between base station apparatuses and RRHs, employing UE-specific reference signals and precoding processing to efficiently transmit and receive control information, allowing for independent configuration of control channel regions and precoding operations for each mobile station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional control channel resource configuration is used, then the control channel structure is simple, but the communication capacity is limited and cannot support more mobile stations
Solution Approach 1:
The control channel resources are segmented into multiple control resource sets, each with distinct configuration parameters. This segmentation allows the system to support multiple mobile stations with different requirements by assigning them to different resource sets, thereby increasing overall communication capacity while maintaining manageable complexity through modular configuration.
Solution Approach 2:
The patent introduces additional configuration dimensions for control channels, including multiple control resource sets with different parameter configurations (cyclic shift values, orthogonal cover codes, etc.). This multi-dimensional resource allocation enables the system to accommodate more mobile stations by exploiting additional degrees of freedom in the resource space.
2Quantity of substance
If control channel resources are increased to support more mobile stations, then communication capacity improves, but resource configuration complexity increases
Solution Approach 1:
Different control resource sets are configured with local quality variations, including different cyclic shift values, orthogonal cover codes, and resource element offsets. This allows each mobile station to receive control information with optimized parameters suited to its specific channel conditions, increasing the number of supported stations while managing complexity through localized parameter differentiation.
Solution Approach 2:
The patent employs parameter changes across different control resource sets, varying key parameters such as cyclic shift values, orthogonal cover code indices, and resource element positions. These parameter variations enable the system to support more mobile stations by creating distinct control channel instances with different characteristics, thereby increasing capacity without requiring fundamentally new configuration mechanisms.
3Productivity
If coordinated communication between base station and RRH is implemented, then interference is reduced and communication capacity increases, but system complexity increases
Solution Approach 1:
The patent merges control channel transmission functions between the base station and remote radio head, allowing coordinated communication for control information delivery. This combining of transmission resources reduces interference for mobile stations and increases communication capacity, while the shared configuration parameters help manage the added system complexity through unified resource management.
Data Source
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AI summary
The present invention enables efficient transmission/reception of a signal including control information between a base station apparatus and a mobile station apparatus. To realize this, second elements are formed using resources that are obtained by dividing one physical resource block pair, each of first elements is constituted by one or more of the second elements, a control channel is constituted by an aggregation of one or more of the first elements, and there is provided a controller that associates any one of the first elements with one or a plurality of the second elements.