Multilink TXOP Sharing in Wireless LAN to Cut Backoff Delay
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Solution Overview
Problem
Existing wireless LAN technologies face challenges in reducing latency when supporting multiple links, which can lead to data transmission delays and inefficiencies.
Innovation Solution
A method for sharing transmission opportunities (TXOP) among communication nodes using multiple links, allowing data transmission without backoff operations, through the use of physical layer convergence protocol (PLCP) data units and sharing indicators, enabling coordinated sharing of transmission periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If backoff operations are performed for each link transmission, then collision avoidance is achieved, but data transmission delay increases
Solution Approach 1:
The patent combines multiple link transmissions into a single TXOP (Transmission Opportunity) unit. Instead of performing separate backoff operations for each link, the system acquires one TXOP and performs multiple transmissions across different links within that unified time window, thereby eliminating redundant backoff delays while maintaining collision avoidance through coordinated link management
Solution Approach 2:
The system performs preliminary channel access and TXOP acquisition before executing multiple link transmissions. By securing the TXOP in advance and preparing the transmission schedule for multiple links within that window, the system avoids performing backoff operations repeatedly for each link, thus reducing overall transmission delay while ensuring reliable collision-free transmission
2Productivity
If multiple links are used for data transmission, then throughput increases, but coordination complexity increases
Solution Approach 1:
The patent segments the transmission coordination into distinct functional components: TXOP acquisition management, link selection logic, and transmission scheduling within the TXOP window. This segmentation allows each component to be independently managed and optimized, reducing overall coordination complexity while enabling efficient utilization of multiple links for enhanced throughput
3Productivity
If transmission periods are shared among multiple nodes, then resource utilization improves, but access conflict possibilities increase
Solution Approach 1:
The system implements feedback mechanisms where each node monitors the TXOP status and link utilization in real-time. This feedback enables dynamic adjustment of transmission schedules and link selection, allowing multiple nodes to share transmission periods efficiently while detecting and avoiding access conflicts through continuous status monitoring and coordinated response
Data Source
AI summary
A method for sharing a multilink in a next-generation wireless LAN is disclosed. An operation method of a first communication node comprises the steps of: setting a transmission interval; communicating with a second communication node by using a first link and a second link in the transmission interval; sharing the transmission interval with a third communication node; and communicating with the second communication node by using the first link in the transmission interval.