Access Point Uplink Request Scheduling via Segmented Control Frames
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current WLAN systems face inefficiencies in obtaining uplink data requests from stations, particularly when system load is high, as random competition methods struggle with conflict avoidance and polling methods waste resources by polling stations with no data.
Innovation Solution
The method involves the access point sending a control frame with device indication and channel allocation information, distinguishing between scheduled and non-scheduled stations, and allowing non-scheduled stations to use random competition channels, thereby optimizing channel usage and reducing unnecessary feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If random competition is used to obtain uplink data requests, then the structure is simple and networking is flexible, but conflict avoidance becomes difficult when system load is very large
Solution Approach 1:
The patent segments the uplink request acquisition process into two distinct parts: a scheduled access part for stations with data to send (using polling mechanism) and a random competition part for other stations. This segmentation allows the system to combine the reliability of polling for active stations with the simplicity of random access for inactive stations, resolving the contradiction between structural simplicity and conflict avoidance capability.
2Reliability
If polling is used to obtain uplink data requests, then access requirement of specific service can be met, but system efficiency is reduced because the AP polls a large quantity of STAs that have no uplink data
Solution Approach 1:
Instead of polling all stations (excessive action), the patent applies partial action by only polling stations that have indicated they have uplink data to send. The AP receives indication information from stations about their data status, and then selectively polls only those stations with data, avoiding the waste of polling stations with no uplink data while still meeting specific service access requirements.
3Reliability
If polling is performed on all stations, then access requirements can be met, but invalid feedbacks from a large quantity of stations increase
Solution Approach 1:
The patent applies preliminary action by having stations pre-indicate their data status before the polling process. Stations send indication information to the AP in advance to show whether they have uplink data to send. This preliminary action allows the AP to prepare a targeted polling list, preventing the generation of invalid feedbacks from stations with no data while still ensuring access requirements are met for stations that do have data.
Data Source
AI summary
Embodiments of the present invention disclose a method for obtaining a request of a station, an access point, and a station. The method includes sending, by an access point, a control frame to a station and receiving, by the access point, a request to send frame sent by each station according to the control frame. The method also includes performing, by the access point, resource scheduling on each station according to the received request to send frame.