Access Point Multi-Link Interference Management
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Solution Overview
Problem
In environments with a high density of communication apparatuses, the efficiency of wireless LAN communication in unlicensed bands is not significantly improved by increasing the number of connections due to significant interference, limiting the effectiveness of multi-link operations.
Innovation Solution
An access point and station apparatus configuration that maintains multiple connections, where an access point receives and transmits frames to determine the suitability of radio resources, allowing for efficient communication by managing network allocation vectors and carrier sensing across different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple connections are maintained in dense terminal environments, then communication coverage and connectivity are improved, but interference from surrounding devices increases and communication efficiency deteriorates
Solution Approach 1:
The patent applies local quality by making each connection independent with its own resource allocation and interference management. Each link operates autonomously with dedicated NAV (Network Allocation Vector) tracking, allowing the system to maintain multiple connections simultaneously while managing interference locally at each connection level rather than globally, thus preserving communication efficiency despite increased coverage.
Solution Approach 2:
The patent segments the communication system into multiple independent connections, each with separate resource management. By dividing the overall communication task into distinct links with individual NAV counters and interference management, the system can maintain multiple connections without allowing interference in one connection to degrade performance in others, thereby maintaining overall communication efficiency while expanding coverage.
2Productivity
If the number of connections is increased to improve throughput, then user data rate is improved, but interference management complexity increases and resource allocation becomes more difficult
Solution Approach 1:
The patent implements universality by creating a standardized connection management framework that handles multiple connections through common protocols and mechanisms. Each connection uses the same NAV tracking, resource allocation, and interference management procedures, allowing the system to scale to multiple connections without proportionally increasing management complexity. This universal approach enables high throughput across multiple links while keeping resource allocation systematic and manageable.
3Adaptability or versatility
If multiple connections are maintained across different frequency bands, then frequency band switching capability is improved, but the target communication area expands and exposes the system to more interference
Solution Approach 1:
The patent applies preliminary action by pre-establishing multiple connections across different frequency bands before communication needs arise. Each connection is pre-configured with its own NAV (Network Allocation Vector) for tracking reserved resources. When interference is detected on one frequency band, the system can immediately switch to another pre-established connection without requiring time-consuming reconnection procedures, thus maintaining adaptability while managing interference through proactive resource reservation.
Data Source
AI summary
An access point apparatus is an access point apparatus configured to maintain a first connection and a second connection, and includes a receiver configured to receive, in the first connection, a first frame including information associated with the second connection and a transmitter configured to determine, using the first frame, whether to transmit a second frame in the second connection.