Resource Unit Sharing for Wireless Access Points
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Solution Overview
Problem
Existing wireless transmission management systems face challenges in efficiently utilizing reserved Resource Units (RUs) by allowing unused portions to be shared among neighboring Access Points (APs), thereby optimizing bandwidth usage in multi-AP environments.
Innovation Solution
A method for RU sharing where a first AP reserves a RU, assigns traffic to user devices, identifies unused portions, and invites neighboring APs to use these unused portions, allowing them to assign sub-portions for their own communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a first AP reserves a RU for exclusive use, then communication reliability between the first AP and its user devices is improved, but bandwidth utilization deteriorates because unused portions cannot be shared with neighboring APs
Solution Approach 1:
The patent applies local quality by differentiating between used and unused portions of the RU. The first AP maintains exclusive control over the portions it needs for reliable communication with its user devices, while making unused portions available for sharing with neighboring APs. This selective differentiation resolves the contradiction by preserving reliability where needed while improving bandwidth utilization where capacity exists.
Solution Approach 2:
The patent implements universality by enabling the RU to serve multiple functions and multiple APs. The same RU can be used by the first AP for its primary communications while simultaneously being shared with neighboring APs for their transmissions. This multi-functionality approach allows the system to maintain reliability for the reserving AP while also improving overall bandwidth utilization through shared access.
2Productivity
If unused portions of RUs are made available for sharing among neighboring APs, then bandwidth utilization is improved, but system complexity increases due to coordination requirements
Solution Approach 1:
The patent uses an intermediary approach through the RU assignment message that coordinates sharing between APs. The first AP sends an invitation to neighboring APs indicating available unused portions, and the system manages the coordination through structured messaging and assignment protocols. This intermediary mechanism enables bandwidth sharing while controlling system complexity through standardized coordination procedures.
Solution Approach 2:
The patent applies self-service by enabling neighboring APs to autonomously identify and utilize unused portions of RUs. Instead of requiring centralized control for every sharing decision, the system allows APs to independently assess available capacity and initiate sharing arrangements. This reduces system complexity by distributing the coordination burden while still achieving improved bandwidth utilization.
3Productivity
If multiple APs share the same RU, then bandwidth utilization is improved, but interference between APs increases
Solution Approach 1:
The patent applies segmentation by dividing the RU into distinct portions - some reserved for the first AP's exclusive use and others allocated for sharing with neighboring APs. This segmentation ensures that critical communications maintain dedicated resources free from interference, while non-critical or lower-priority traffic can utilize shared portions. The segmentation approach enables bandwidth utilization improvement while controlling interference through spatial and functional separation.
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
Resource Unit (RU) sharing between Access Points in a wireless network is provided by identifying a first Access Point (AP) associated with a first user device, wherein the first AP has won contention for a RU; identifying a second AP associated with a second user device, wherein the first user device and the second user device are located within an overlapping area served by the first AP and the second AP; identifying an unused portion of the RU to which the first AP has not scheduled traffic between the first AP and the first user device; and assigning the unused portion to the second AP for communication between the second AP and the second user device.