Aggregated Control Message for MU-MIMO Resource Allocation
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing channel resources and optimizing data throughput for multiple user terminals in MIMO systems, particularly in MU-MIMO scenarios, due to complexities in control message initiation and resource allocation.
Innovation Solution
A method and apparatus that specify transmission parameters for multiple wireless nodes within a single frame, enabling efficient communication by transmitting a single control message that includes scheduling, power control, and spatial stream allocation information, allowing for simultaneous or sequential transmissions and implicit or explicit CSI feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple control messages are sent to manage MU-MIMO communications, then resource allocation and scheduling can be performed, but control message complexity and management overhead increase
Solution Approach 1:
The patent combines multiple control messages into a single aggregated control message that contains scheduling information, power control parameters, and spatial stream allocation for multiple wireless nodes. This merging approach maintains comprehensive resource allocation capabilities while reducing the number of separate control messages that need to be managed and processed.
Solution Approach 2:
The aggregated control message structure is designed to serve multiple functions simultaneously - it provides scheduling information, power control directives, and spatial stream allocation for multiple nodes in a single message. This multi-functionality reduces the need for multiple specialized control messages while maintaining full control capability.
2Ease of operation
If separate control messages are used for each wireless node, then individual parameter control is achieved, but bandwidth consumption and transmission overhead increase
Solution Approach 1:
The patent merges control information for multiple wireless nodes into a single aggregated control message, thereby reducing the total bandwidth consumption and transmission overhead. The message structure efficiently packs individual parameters for multiple nodes without requiring separate message transmissions.
Solution Approach 2:
The control message format is optimized to efficiently represent multiple nodes' parameters in a compact structure, changing the parameter representation method to reduce overall message size while maintaining the ability to individually control each node's transmission parameters.
3Productivity
If channel state information is collected from multiple STAs, then SDMA stream optimization is improved, but system complexity and measurement overhead increase
Solution Approach 1:
The patent implements preliminary channel state information collection and processing before SDMA stream formation. By gathering CSI from multiple STAs in advance and incorporating it into the aggregated control message, the system optimizes SDMA stream configuration without adding complexity during the actual data transmission phase.
Data Source
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AI summary
A process for wireless communications is disclosed herein that includes specifying transmission parameters for a plurality of wireless nodes in a single frame; and transmitting the single frame. An apparatus for performing the process is also disclosed herein.