Wireless Message Exchange with Connection Status Feedback
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Solution Overview
Problem
In wireless communication systems, especially in WPANs, devices face challenges in establishing efficient data streaming connections due to lack of status information from source devices, leading to repeated connection requests and wastage of transmission power, and insufficient channel resources for data transmission.
Innovation Solution
A method is introduced where a sink device receives status information and delay time information about the source device, allowing it to display connection information and wait times, reducing repeated connection requests and optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sink device repeatedly transmits connect request messages to establish connection with a source device, then connection reliability is improved, but transmission power consumption increases and channel resources are wasted
Solution Approach 1:
The source device performs preliminary actions by determining its connection status in advance and proactively transmitting this status information to the sink device through the connect response message. This allows the sink device to avoid repeated connection requests when the source device is not ready, thereby reducing unnecessary power consumption while maintaining connection reliability.
Solution Approach 2:
The patent implements a feedback mechanism where the source device provides connection status information back to the sink device through the connect response message. This feedback includes data indicating whether the source device can currently establish a connection, enabling the sink device to adjust its connection attempts accordingly and avoid wasteful repeated transmissions.
2Productivity
If channel resources are allocated to accommodate multiple devices, then network capacity is improved, but resource allocation complexity increases
Solution Approach 1:
The coordinator device acts as an intermediary that centrally manages channel resource allocation for the entire piconet. It allocates channel time blocks to source devices based on their data transmission needs, thereby increasing network capacity while keeping the allocation process simple and centralized rather than complex and distributed.
Solution Approach 2:
The channel resources are segmented into distinct time blocks (CTBs) allocated to different source devices. This segmentation allows multiple devices to share the channel efficiently without conflict, improving network capacity while maintaining simple allocation rules through temporal division rather than complex spatial or frequency division.
3Productivity
If connection status information is provided in the connect response message, then connection efficiency is improved, but message complexity increases
Solution Approach 1:
The connection status information is merged into the existing connect response message structure rather than being transmitted as a separate message. This combines multiple functions (connection response and status notification) into a single message exchange, improving connection efficiency while minimizing the increase in message complexity.
Data Source
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AI summary
A method of exchanging messages, which are intended for streaming connection with a source device, in a sink device of a wireless network comprises transmitting a connect request message for data streaming to the source device; receiving a connect response message from the source device, the connect response message including connection information indicating the possibility of connection with the source device; and outputting a user interface indicating at least one of the connection information included in the connect response message and wait time information required for connection with the source device, on a display module.