Static Puncturing for Wireless Transmission Protection
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Solution Overview
Problem
Existing wireless communication systems face challenges in providing transmission protection during extremely-high-throughput (EHT) request-to-send (RTS) and clear-to-send (CTS) procedures to avoid collisions and improve overall system performance, particularly in scenarios involving static and dynamic bandwidth indications.
Innovation Solution
The implementation of static puncturing techniques in wireless communications, where a processor determines the non-punctured subchannels within a channel width and decides whether to transmit or refrain from transmitting a response control frame based on channel availability, using bandwidth signaling and Disabled Subchannel Bitmap fields to manage channel usage effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static puncturing is implemented in EHT RTS and CTS procedures, then transmission protection is improved and collisions are reduced, but device complexity increases due to additional bandwidth signaling and subchannel determination requirements
Solution Approach 1:
The patent applies preliminary action by establishing static puncturing patterns and disabled subchannel bitmaps in advance before actual data transmission. The TXOP initiator determines and signals which subchannels are punctured (disabled) beforehand, allowing the TXOP responder to pre-calculate available subchannels for CTS transmission. This advance preparation reduces collisions by ensuring both stations know which subchannels are safe to use, while the complexity is managed through standardized bitmap representations rather than complex real-time calculations.
2Productivity
If bandwidth signaling is transmitted to indicate non-punctured subchannels, then channel usage optimization is improved, but loss of information increases due to additional signaling overhead
Solution Approach 1:
The patent applies parameter changes by encoding subchannel availability information into compact bitmap parameters. Instead of transmitting detailed descriptions of each subchannel's status, the system uses binary bitmap fields where each bit represents the availability of a specific subchannel. This parameter transformation efficiently conveys channel usage information while minimizing signaling overhead, as the bitmap representation requires far fewer bits than alternative methods of indicating the same information.
Data Source
AI summary
Techniques pertaining to transmission protection with static puncturing in wireless communications are described. An apparatus (e.g., a station (STA)) receives a control frame with bandwidth signaling that is transmitted in a channel width of the control frame including one or more non-punctured non-primary subchannels within the channel width. The apparatus then determines the one or more non-punctured non-primary subchannels within the channel width of the control frame and also determines whether to transmit a response control frame responsive to receiving the control frame. Depending on a result of the determining, the apparatus either refrains from transmission of the response control frame or transmits the response control frame in at least one subchannel within the channel width of the control frame.