Wireless Terminal Broadband Link Setup via Idle Secondary Channels
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Solution Overview
Problem
Existing wireless LAN technologies face challenges in providing high-efficiency and high-performance communication in high-density environments, particularly in maintaining communication efficiency and fairness among terminals using wideband channels.
Innovation Solution
A wireless communication method and terminal that utilize clear channel assessment (CCA) to identify idle secondary channels, set a second primary channel, and perform backoff procedures to transmit data using both primary and secondary channels, thereby extending bandwidth and ensuring fair data transmission opportunities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a terminal uses a wideband channel for data transmission, then data transmission speed is improved, but fairness with other terminals using narrowband channels deteriorates
Solution Approach 1:
The patent changes the parameter of channel bandwidth dynamically by allowing terminals to select between narrowband and wideband channels based on channel conditions and traffic requirements. This enables high-speed transmission on wideband channels when available while maintaining fairness through proportional resource allocation and backoff mechanisms that prevent any single terminal from monopolizing all wideband resources.
2Productivity
If multiple terminals simultaneously access wideband channels, then overall channel use rate is improved, but collision probability and interference increase
Solution Approach 1:
The patent introduces dynamic channel access mechanisms where terminals continuously monitor channel conditions and adjust their access behavior accordingly. The system dynamically allocates wideband channel resources based on real-time channel quality, terminal capabilities, and traffic demands, allowing multiple terminals to access wideband channels simultaneously under controlled conditions that minimize collisions and interference.
Solution Approach 2:
The patent implements feedback mechanisms through clear channel assessment (CCA) procedures and acknowledgment frames that provide real-time information about channel status and transmission success. This feedback enables terminals to adjust their transmission power, select alternative channels, or retry transmissions, thereby managing collision and interference while maintaining high overall channel utilization.
3Reliability
If a terminal performs clear channel assessment for secondary channels before transmission, then channel access reliability is improved, but access delay increases
Solution Approach 1:
The patent performs clear channel assessment (CCA) on secondary channels in advance before actual data transmission begins. This preliminary action ensures that when a terminal gains access to a wideband channel, all constituent channels (primary and secondary) are already verified as clear, preventing transmission failures and ensuring reliable wideband access while minimizing the delay during actual data transfer.
Data Source
AI summary
The present invention relates to a wireless communication method and a wireless communication terminal for wideband link setup, and more particularly, a wireless communication method and a wireless communication terminal for increasing data communication efficiency by extending a data transmission bandwidth of a terminal. To this end, provided are a wireless communication method of a terminal, including: obtaining first primary channel information of a basic service set (BSS) with which the terminal is associated; performing clear channel assessment (CCA) for one or more secondary channels of the BSS; and setting a second primary channel among one or more secondary channels determined to be idle based on a result of the CCA, and a wireless communication terminal using the same.