Hybrid MIMO Mode Decision in Wireless Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless metropolitan area network (WMAN) systems inadequately make mode decisions due to exclusive reliance on either base station (BS) or mobile station (MS) information, failing to adapt to changing channel conditions effectively.
Innovation Solution
Implementing a hybrid scheme of mode decision by the base station (BS) that considers both BS and MS information, using channel and system level information to dynamically select between BS-derived and MS-derived mode configurations, such as MIMO mode and modulation coding schemes, based on system state transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If exclusive BS-centric or MS-centric approach is used for mode decision, then the decision process is simple, but the mode decision accuracy deteriorates due to incomplete information
Solution Approach 1:
The patent combines BS-centric and MS-centric mode decision approaches into a hybrid scheme. The BS determines a first mode configuration based on BS-available information, while the MS determines a second mode configuration based on MS-available information. These two configurations are then merged through a selection process that chooses the more appropriate configuration based on channel conditions, thereby utilizing complete information from both sides while maintaining a manageable decision process.
2Measurement precision
If hybrid scheme is used to improve mode decision accuracy, then the information utilization is optimized, but the device complexity increases
Solution Approach 1:
The patent segments the mode decision process into distinct components: BS determines first mode configuration based on BS information, MS determines second mode configuration based on MS information, and a selection mechanism chooses between them. This segmentation allows each entity to perform a simplified determination based on its available information, reducing individual complexity while achieving high overall accuracy through the combination of multiple specialized decisions.
3Ease of operation
If mode configuration is determined exclusively by BS, then the system control is centralized and simple, but the adaptability to MS-specific channel conditions deteriorates
Solution Approach 1:
The patent implements preliminary actions by having both the BS and MS independently determine mode configurations before the final selection. The BS determines a first mode configuration based on system-level information, and the MS determines a second mode configuration based on channel-specific information. This preliminary determination by both parties ensures that when the final selection is made, the system can quickly adapt to MS-specific channel conditions without complex real-time processing.
4Adaptability or versatility
If mode configuration is determined exclusively by MS, then the channel condition adaptation is improved, but the system-level information utilization deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the MS sends channel quality information and mode recommendations back to the BS, and the BS provides system-level information and mode configurations to the MS. This bidirectional feedback ensures that system-level information from the BS is not lost, while also incorporating MS-specific channel condition adaptations. The feedback loop enables both entities to utilize their respective information effectively in the hybrid mode decision process.
Data Source
AI summary
A system and method a hybrid scheme of mode decision in a network having a plurality of mobile stations communicably coupled to a base station may include a mode decision module associated with the base station. The mode decision module may include one or more processors configured to select a first mode configuration for use during transmission of a first communication from the base station, receive first feedback information comprising a first mode recommendation and first channel information, identify a first system state of the first communication based at least in part on the first condition information, determine whether to use the first mode recommendation configuration based at least in part on the first system state, and configure the second communication using a second mode configuration based on the determination.