Wireless Service Discovery via Beacon Frame Analysis
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Solution Overview
Problem
Current service discovery protocols in wireless networks require clients to establish a network connection before identifying available services, leading to inefficiencies in time and power consumption, especially in environments with multiple networks.
Innovation Solution
Implementing Layer 2 service advertisement and discovery using Query and Response messages, allowing devices to advertise and discover services without initial network connection, utilizing radio interfaces like Wi-Fi, UWB, and Bluetooth, and leveraging protocols like ZeroConf and UPnP to exchange service information before connection establishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If service discovery is performed using Layer-3 protocols requiring network connection establishment, then service discovery can be performed, but time consumption and power consumption increase significantly
Solution Approach 1:
The patent performs service discovery actions before network connection establishment by listening to beacon frames from access points. The client device extracts service information from these beacons and identifies available services prior to connecting to the network, thereby eliminating the time delay of post-connection service discovery.
Solution Approach 2:
The patent uses beacon frames as an intermediary carrier to transmit service information. Instead of requiring direct Layer-3 communication between client and server, the access point's beacon frames serve as a medium to convey service advertisement data, enabling indirect service discovery before connection.
2Reliability
If service discovery is performed using Layer-3 protocols requiring network connection establishment, then service discovery can be performed, but power consumption increases due to multiple connection establishments
Solution Approach 1:
The patent performs service discovery before network connection establishment by monitoring beacon frames. This preliminary action allows the client to identify the appropriate network and service targets in advance, avoiding the need to establish and disconnect from multiple networks, thereby conserving battery power.
Solution Approach 2:
The beacon frame acts as an intermediary that carries service information without requiring the client to establish a full network connection. This reduces the energy expenditure associated with repeated connection establishments while still enabling effective service discovery.
3Adaptability or versatility
If clients connect to multiple networks to find required services, then service availability increases, but time and power efficiency decrease
Solution Approach 1:
The patent enables clients to perform service discovery in advance by listening to beacon frames from multiple access points simultaneously. This preliminary discovery allows the client to identify which network provides the required service before establishing any connection, eliminating the need to sequentially connect to multiple networks and significantly improving discovery efficiency.
Data Source
AI summary
An embodiment of the present invention provides a method for discovering services provided in a wireless network, comprising enabling devices equipped with radio interfaces to advertise the services it provides and discover services offered by other nearby devices without establishing a network connection with the devices.