Wireless Station Group-Addressed Frame Transmission via Directional Sequences
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Solution Overview
Problem
Current wireless communication systems, particularly in the millimeter-wave band, face challenges in efficiently delivering group-addressed frames to multiple stations without duplications, as existing solutions either require excessive transmissions or are not suitable for directive networks, leading to inefficiencies and duplicate frame reception.
Innovation Solution
The implementation of a method where a wireless station transmits a sequence of group-addressed frames with a Repetition Number (RN) and Sequence Number (SN) in the Sequence Control field, allowing for directional transmission sequences and buffer management to ensure efficient delivery and duplicate detection, using a Self-Clear-To-Send (Self-CTS) frame to reserve the wireless medium and a Block Acknowledgement Request (BAR) to manage frame reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a Station transmits frames to multiple STAs using existing single-user protocols, then the system can maintain protocol simplicity, but the Station cannot transmit frames to more than a single STA at a time, reducing transmission efficiency
Solution Approach 1:
The patent segments the transmission process into unicast frame transmissions to individual STAs within a group, where each frame is addressed to a specific STA but transmitted as part of a coordinated sequence. This allows multiple STAs to receive frames simultaneously through structured unicast transmissions rather than requiring complex multicast protocols
Solution Approach 2:
The patent merges multiple unicast frame transmissions into a coordinated sequence that functions as a group communication mechanism. By combining sequential unicast transmissions with group address identification and duplicate suppression logic, the system achieves multi-STA communication efficiency while maintaining protocol simplicity
2Reliability
If existing solutions are used to deliver group-addressed frames to multiple stations, then the transmission method is simple, but excessive transmissions occur leading to frame duplications and resource waste
Solution Approach 1:
The patent implements feedback mechanisms through acknowledgment frames and duplicate suppression logic. Each STA sends acknowledgment information about received frames, and the transmitting Station uses this feedback to identify and suppress duplicate transmissions, ensuring reliable frame delivery without excessive retransmissions
Solution Approach 2:
The patent performs preliminary actions by establishing group address identification and duplicate detection mechanisms before transmission begins. The system pre-configures frame addressing structures and duplicate suppression logic, allowing STAs to recognize and filter duplicate frames before they cause resource waste
Data Source
AI summary
Some demonstrative embodiments include apparatuses, devices, systems and methods of wireless communication to a plurality of wireless stations. For example, a wireless station may be configured to assign to a plurality of data units a respective plurality of increasing sequence numbers (SNs); and to transmit one or more directional transmission sequences in one or more respective directions over a directional frequency band.