Wi-Fi Direct Mesh Audio Streaming
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Solution Overview
Problem
Current Public Address and Voice Annunciation (PA-VA) systems require extensive wired connections for power and audio, leading to slow and costly deployment, limited flexibility in zone creation, high maintenance costs, and restricted wireless communication to one hop, which hampers efficient live audio streaming over multiple hops in wireless mesh networks.
Innovation Solution
Implementing a wireless mesh network using Wi-Fi Direct technology to enable multiple-hop audio streaming, with time synchronization across nodes to ensure audio intelligibility and quality of service, employing packet puncturing to minimize data loss, and utilizing Multiple-Input and Multiple-Output (MIMO) radios for reliable concurrent operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired connections are used for power and audio in PA-VA systems, then reliability of audio transmission is improved, but device complexity and deployment cost increase due to extensive wiring requirements
Solution Approach 1:
The patent replaces the mechanical wired connection system with a wireless communication system. Speaker nodes communicate with the central panel and with each other via Wi-Fi wireless networks, eliminating the need for extensive physical wiring while maintaining audio transmission functionality. This substitution resolves the contradiction by removing the mechanical wiring complexity while preserving communication reliability through wireless protocols.
Solution Approach 2:
The patent introduces wireless communication protocols and network infrastructure as intermediaries between the central panel and speaker nodes. Instead of direct wired connections, audio data and power information are transmitted through wireless network packets via intermediate routers and access points, reducing the need for direct physical connections between all components.
2Stability of the object's composition
If wired connections are used for speaker nodes, then audio transmission stability is improved, but ease of operation deteriorates due to slow and costly deployment
Solution Approach 1:
The patent replaces mechanical wiring installation with wireless network configuration. Speaker nodes are deployed by simply connecting them to power and joining them to the wireless network, eliminating time-consuming wiring work. This substitution dramatically improves deployment ease while maintaining transmission stability through wireless communication protocols.
Solution Approach 2:
The patent enables dynamic network configuration where speaker nodes can be added, removed, or relocated without physical rewiring. The wireless network automatically routes audio streams to active nodes, allowing flexible deployment and reconfiguration. This dynamic capability improves ease of operation while maintaining stable audio transmission through adaptive network routing.
3Manufacturing precision
If wired connections are used for speaker nodes, then audio quality is improved, but adaptability deteriorates as zones cannot be changed after deployment
Solution Approach 1:
The patent implements dynamic zone configuration through software control. Audio zones and speaker groupings can be modified by changing network configurations and playback lists without physical rewiring. This dynamic adaptability allows zones to be reconfigured for different events, renovations, or operational requirements while maintaining high audio quality through digital signal processing and wireless transmission.
Solution Approach 2:
The patent creates a universal wireless infrastructure that serves multiple functions: audio streaming, zone management, node addressing, and configuration control. This multi-functional system allows the same wireless network to support various zone configurations and operational modes, providing adaptability across different scenarios while maintaining audio quality through unified digital processing.
4Ease of operation
If wireless communication with one hop is used for speaker nodes, then ease of operation is improved, but reliability deteriorates due to restricted communication range
Solution Approach 1:
The patent segments the wireless network into multiple hops through intermediate relay nodes. Speaker nodes that cannot directly communicate with the central panel use intermediate speaker nodes or gateway devices as relays to forward audio streams. This segmentation extends communication range while maintaining reliability through multi-path wireless transmission, resolving the contradiction between ease of wireless operation and communication reliability.
Solution Approach 2:
The patent introduces intermediate wireless nodes and gateway devices as mediators in the communication path. These intermediaries relay audio data packets between the central panel and distant speaker nodes, extending the effective communication range. This intermediary approach maintains communication reliability through wireless protocols while enabling operation across larger facility areas without direct line-of-sight connections.
Data Source
AI summary
A network includes an access point Wi-Fi Direct (AP WFD) device. The AP WFD device includes access point (AP) functionality. A plurality of client WiFi Direct (WFD) devices is coupled to the AP WFD device. The client WFD devices include client functionality. The AP WFD device is configured to synchronize the client WFD devices and to stream multimedia data to the client WFD devices.