TXOP Bandwidth Sharing Between APs for Urgent Traffic
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Solution Overview
Problem
The existing TXS technology among APs is inadequate in accurately determining bandwidth resources to be shared and selecting appropriate AP candidates, leading to increased data transmission delays and suboptimal system performance due to reliance on bandwidth prediction and prioritization of Quality of Service (QoS) without considering urgent traffic needs.
Innovation Solution
A method for APs to determine and announce bandwidth resources not to be used during a TXOP, indicating delay requirements and priorities, allowing eligible APs to contend for these resources, thereby ensuring timely transmission of urgent and high-priority data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If bandwidth prediction and QoS prioritization are used to determine bandwidth sharing, then system structure is simplified, but data transmission delays increase and urgent traffic needs are not met
Solution Approach 1:
The patent applies preliminary action by having the first AP proactively announce the bandwidth resource it will not use during the TXOP period before other APs contend for it. This advance notification allows second APs to prepare and contend for the bandwidth resource in time, reducing transmission delays for urgent traffic while maintaining relatively simple system structure through the use of existing announcement mechanisms.
2Productivity
If the first AP announces bandwidth resources not to be used, then bandwidth sharing efficiency is improved, but system complexity increases due to additional signaling
Solution Approach 1:
The patent applies universality by utilizing existing multi-user announcement mechanisms and frame structures to carry the bandwidth resource announcement information. Instead of creating a completely new signaling protocol, the invention embeds the bandwidth sharing information in existing frame types, allowing the same signaling infrastructure to serve both traditional coordination functions and the new bandwidth sharing function, thereby improving efficiency without proportionally increasing complexity.
3Reliability
If APs contend for announced bandwidth resources, then urgent traffic transmission is improved, but contention overhead increases
Solution Approach 1:
The patent applies local quality by allowing APs to contend for specific localized bandwidth resources ( particular frequency subbands or time slots) that were announced as available, rather than requiring contention for the entire bandwidth. This granular approach enables urgent traffic to quickly acquire exactly the resource it needs without the overhead of full-bandwidth contention, improving reliability for urgent traffic while reducing overall contention time.
Data Source
AI summary
This disclosure provides a method and access point (AP) for sharing a transmission opportunity (TXOP). The method includes: determining a bandwidth resource of a frequency band which is not to be used by the first AP for a first time period of the TXOP of the frequency band, and transmitting a signal for announcing the bandwidth resource not to be used by the first AP for the first time period, wherein the signal indicates a delay requirement for one or more second APs to determine whether to contend for the bandwidth resource.