Wireless Station Device Group Join for Efficient Data Transmission
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Solution Overview
Problem
In wireless communication networks without a central access point, existing data transmission methods are inefficient due to the need for establishing additional networks after service discovery, leading to delayed data transmission.
Innovation Solution
A method where a first station device determines if a second station device supports a service and sends a device group join request message, allowing both stations to join the same device group through a multicast MAC address, enabling direct service data transmission within a service window.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If another data transmission network is established after service discovery, then data transmission can be implemented, but transmission time is delayed and transmission efficiency is reduced
Solution Approach 1:
The patent merges the service discovery function and data transmission function into a single NAN network. Stations perform both service discovery and data transmission within the same network infrastructure, eliminating the need to establish a separate data transmission network after service discovery. This integration allows stations to transmit service data directly within the NAN network during service windows, thereby reducing transmission delay while maintaining reliable data transmission capability.
2Reliability
If service data transmission is performed after establishing another network, then data can be transmitted, but transmission efficiency is reduced
Solution Approach 1:
The patent combines service discovery and data transmission operations within a single NAN network infrastructure. Stations maintain membership in the NAN network and perform data transmission directly within this network during designated service windows, rather than establishing a separate network. This merging of functions eliminates the overhead of network establishment and enables more efficient data transmission while ensuring reliable communication between stations.
Data Source
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AI summary
Embodiments of the present invention provide a data transmission method and device. This method includes: determining, by a first station device, that a second station device supports a first service; receiving a device group join request message that is sent by the second station device according to a MAC address of a first device group, where the first device group is a device group of the first service and is a device group to which the first station device belongs; sending a device group join response message to another station device in the first device group and the second station device according to the multicast MAC address of the first device group in a contention transmission manner, where the device group join response message is used to allow the second station device to join the first device group; and performing data transmission of the first service with the second station device in a service window of the first service, where the service window includes a time and/or a channel of service transmission. Therefore, service data can be transmitted in time, thereby improving transmission efficiency.