Access Point Clustering for Distributed MIMO Throughput Gains
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Solution Overview
Problem
Wireless networks face challenges in meeting increasing capacity demands for data transmission, particularly with video streaming and teleconferencing, due to limitations in existing carrier-sense multiple access with collision detection (CSMA/CD) methods.
Innovation Solution
Implementing distributed MIMO communication systems where multiple access points form clusters to coordinate transmissions, using coordinated beamforming and joint MIMO techniques to enhance simultaneous data communication across multiple stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CSMA/CD is used to share the wireless medium, then devices can communicate using simple access protocols, but network capacity and throughput are limited
Solution Approach 1:
Multiple access points are merged into a coordinated cluster that functions as a single distributed MIMO system. The access points share channel state information and coordinate their transmissions to serve multiple stations simultaneously, thereby increasing network capacity while maintaining manageable individual device complexity through standardized clustering protocols
2Productivity
If multiple access points operate independently, then each access point can be managed simply, but network throughput is limited by sequential access
Solution Approach 1:
Access points perform preliminary actions by exchanging channel state information and coordinating their transmission plans before actual data transmission. This pre-coordination enables simultaneous transmissions to multiple stations without collisions, increasing throughput while keeping the coordination complexity manageable through structured information exchange protocols
3Productivity
If distributed MIMO clustering is implemented, then more stations can communicate simultaneously improving throughput, but access point discovery and cluster formation complexity increases
Solution Approach 1:
Access points autonomously discover potential cluster members and initiate cluster formation procedures without requiring centralized control. Each access point independently evaluates compatibility with neighboring access points based on channel conditions and autonomously proposes cluster formations, thereby enabling simultaneous communication for more stations while keeping the discovery process manageable through self-organizing protocols
Data Source
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AI summary
Distributed MIMO communication utilizes multiple access points within a cluster. Methods and systems for access point discovery provide for formation of a cluster to support the distributed MIMO communication. In one aspect, a method includes generating, by a first access point, a first message indicating the first access point has distributed MIMO capability and transmitting, by the first access point, the first message on a wireless network. The method further includes receiving, by the first access point, a second message from a second access point, the second message identifying a cluster and determining, by the first access point, to participate in the identified cluster in response to the second message.