Non-PCP/AP Station Link Setup via Predicted Reception Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, particularly those adhering to the IEEE 802.11ad standard, establishing a wireless link between non-personal basic service point/access point (PCP/AP) and non-PCP/AP stations is challenging due to difficulties in receiving beamforming training frames, leading to increased power consumption and unnecessary interference.
Innovation Solution
A communication device and method that determines whether a frame used for beamforming training will reach a communication partner by analyzing the reception power and antenna gain of DMG Beacon frames, allowing for selective transmission and reducing unnecessary transmissions and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wireless terminal transmits beamforming training frames to establish a wireless link, then the wireless link establishment is enabled, but power consumption increases and unnecessary interference occurs to other terminals
Solution Approach 1:
The patent applies preliminary action by having the AP transmit a DMG Beacon frame containing reception antenna gain information before the STA transmits beamforming training frames. This allows the STA to predict reception power and determine in advance whether transmission will be successful, avoiding unnecessary transmissions and reducing power consumption while ensuring reliable link establishment when conditions are favorable
Solution Approach 2:
The patent implements feedback by including reception antenna gain information from the AP in the DMG Beacon frame. This feedback enables the STA to make informed decisions about whether to transmit beamforming training frames based on predicted reception power, creating a closed-loop system that optimizes both reliability and power efficiency
2Reliability
If a wireless terminal transmits beamforming training frames to establish a wireless link, then the wireless link establishment is enabled, but unnecessary interference waves are generated to other STAs
Solution Approach 1:
The patent applies preliminary action by enabling the STA to predict reception power using the DMG Beacon frame information before transmitting beamforming training frames. This allows the STA to avoid transmissions that would not be successfully received, thereby preventing unnecessary interference waves to other STAs while maintaining reliable link establishment when conditions permit
3Reliability
If the STA transmits SSW frames in A-BFT, then beamforming training is performed, but unnecessary transmissions occur when the AP cannot receive the frames
Solution Approach 1:
The patent applies preliminary action by having the STA calculate predicted reception power using the reception antenna gain information from the DMG Beacon frame before transmitting SSW frames in A-BFT. This preliminary assessment allows the STA to avoid unnecessary transmissions that the AP cannot receive, improving transmission efficiency while ensuring beamforming training proceeds reliably when conditions are favorable
Data Source
AI summary
A non-personal basic service set control point/access point (non-PCP/AP) communication apparatus includes a reception circuit, an estimation circuit, and a transmission circuit. The reception circuit receives a Directional Multi-Gigabit (DMG) Beacon frame including a sector sweep (SSW) field, the SSW field including a Parameter subfield indicating a value obtained by using a transmission Equivalent Isotropic Radiated Power (EIRP) of a PCP/AP communication partner apparatus and a reception antenna gain of the PCP/AP communication partner apparatus. The estimation circuit estimates an expected reception power at the PCP/AP communication partner apparatus by using the value of the Parameter subfield, and checks inequality between the estimated expected reception power and a receiver sensitivity value. The transmission circuit transmits a frame for Association Beamforming Training (A-BFT) if the estimated expected reception power is larger than the receive sensitivity value.