WLAN Beacon Frame Access Timing Control
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Solution Overview
Problem
Current communication systems lack a concrete method for transmitting and receiving data in new frequency bands, particularly for WLAN systems, which hinders stable high-speed data transmission and quality of service (QoS) assurance for multiple users.
Innovation Solution
The proposed solution involves an apparatus and method that configures a frame in a new frequency band, using a reception unit to gather terminal information, a determination unit to set access timing, and a transmission unit to transmit terminal access information and beacon frames, ensuring efficient data transmission and reception while controlling access to ensure QoS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data transmission is conducted in a new frequency band not used by legacy devices, then transmission rate and capacity are improved, but system compatibility and access control mechanisms are insufficient
Solution Approach 1:
The patent introduces new frame structure parameters specifically designed for unlicensed band operation, including modified beacon interval parameters, transmission opportunity (TXOP) parameters, and quality of service (QoS) parameter sets that are optimized for the new frequency band characteristics while maintaining compatibility with existing WLAN protocols
Solution Approach 2:
The patent segments the unlicensed band access mechanism into distinct functional components: beacon frame transmission for synchronization, TXOP allocation for controlled access, and QoS parameter sets for service differentiation. This segmentation allows each component to be independently optimized and managed, ensuring reliable service quality while enabling high-speed data transmission
2Reliability
If access control is implemented for multiple terminals in a new frequency band, then service quality is improved, but frame configuration complexity increases
Solution Approach 1:
The patent designs a universal frame structure that serves multiple functions simultaneously: beacon frames provide both synchronization and QoS parameter distribution, TXOP allocations handle both access control and resource management, and the frame format accommodates both legacy and new band requirements. This multi-functionality reduces the need for separate complex configuration mechanisms
3Measurement precision
If beacon frames are transmitted frequently for access timing control, then access timing precision is improved, but channel utilization efficiency deteriorates
Solution Approach 1:
The patent implements periodic beacon frame transmission with optimized intervals specifically tuned for unlicensed band operation. The beacon intervals are set to provide sufficient timing precision for access control while minimizing the overhead proportion. Additionally, the patent uses periodic transmission opportunity (TXOP) allocations that synchronize with beacon intervals, creating a rhythmic access pattern that balances timing precision with channel efficiency
Data Source
AI summary
A data transmission apparatus in a communication system includes a reception unit configured to receive terminal information from a plurality of terminals through a new frequency band for transmission and reception of data between the plurality of terminals and an AP (access point); a determination unit configured to determine access timing of the terminals to the AP by using the terminal information, and generate terminal access information including information on the access timing; and a transmission unit configured to transmit the terminal access information and beacon frames to the terminals, wherein the terminals access the AP and transmit data frames to the AP, at the access timing based on the beacon frames.