Multi-Link WLAN TXOP Sharing to Reduce Backoff Latency
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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 nodes to transmit data 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
1Loss of time
If traditional wireless LAN technologies are used with single link transmission, then device complexity is low, but data transmission delay increases and productivity decreases
Solution Approach 1:
The patent divides the wireless communication system into multiple independent links (first link, second link, etc.), each capable of separate transmission opportunities (TXOP). By segmenting the transmission channels, the system can parallelize data transmission across multiple links, reducing overall transmission delay while maintaining manageable complexity through structured resource allocation and sharing mechanisms.
Solution Approach 2:
The patent transitions from single-link transmission to multi-link transmission by adding a dimensional aspect to the communication system. Instead of improving speed on a single link, the system creates multiple transmission dimensions (links) that operate simultaneously or in coordinated sharing, thereby reducing transmission delay through spatial-temporal multiplexing without proportionally increasing system complexity.
2Productivity
If multi-link transmission is implemented without sharing mechanisms, then data transmission efficiency improves, but loss of time increases due to backoff operations
Solution Approach 1:
The patent implements preliminary action by establishing TXOP sharing agreements and coordination mechanisms before actual data transmission begins. Communication nodes pre-negotiate and allocate transmission opportunities across multiple links, setting up sharing indicators and resource reservations in advance. This preliminary coordination eliminates the need for time-consuming backoff operations during data transmission, as nodes already have authorized access rights to the required links.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining active transmission opportunities across multiple links without interruption from backoff procedures. Through TXOP sharing, nodes can continuously utilize authorized links for data transmission, avoiding idle periods and maintaining uninterrupted communication flow, thereby reducing latency while preserving high transmission efficiency.
3Loss of time
If transmission opportunities are shared among multiple nodes, then loss of time is reduced, but device complexity increases due to coordination requirements
Solution Approach 1:
The patent applies universality by creating a multi-functional TXOP sharing mechanism that serves multiple purposes simultaneously. The same sharing framework and coordination protocols are used across different links and between various communication nodes, providing a universal solution that reduces transmission delay while avoiding the need for separate complex coordination mechanisms for each link or node pair.
Solution Approach 2:
The patent utilizes parameter changes by introducing sharing indicators and TXOP allocation parameters that dynamically control link sharing behavior. These parameters can be adjusted based on network conditions, node capabilities, and traffic requirements, allowing the system to optimize the balance between transmission speed and coordination complexity through configurable settings rather than fixed complex procedures.
4Productivity
If multiple links are used for communication, then productivity increases, but device complexity increases due to resource management requirements
Solution Approach 1:
The patent merges resource management functions by consolidating the management of multiple links under a unified TXOP sharing framework. Instead of independently managing each link's resources, the system combines resource allocation, scheduling, and coordination into an integrated multi-link resource management mechanism, thereby improving data transmission efficiency while controlling complexity through consolidation rather than multiplication of management functions.
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.