18606226. LATENCY REDUCTION USING PREEMPTION WITHIN A PPDU simplified abstract (Apple Inc.)
Contents
LATENCY REDUCTION USING PREEMPTION WITHIN A PPDU
Organization Name
Inventor(s)
Wook Bong Lee of San Jose CA (US)
Anuj Batra of Redwood City CA (US)
Mohamed Abouelseoud of Burlingame CA (US)
Chitlo Chosh of Fremont CA (US)
LATENCY REDUCTION USING PREEMPTION WITHIN A PPDU - A simplified explanation of the abstract
This abstract first appeared for US patent application 18606226 titled 'LATENCY REDUCTION USING PREEMPTION WITHIN A PPDU
Abstract: Disclosed herein are apparatuses and a method for implementing latency reduction using preemption within a physical layer (PHY) protocol data unit (PDU) (PPDU). An embodiment operates by encoding a multi-user PPDU (MU-PPDU) for transmission, where the MU-PPDU comprises a plurality of aggregated media access control (MAC) PDUs (A-MPDUs) addressed to respective non-low-latency stations (non-LL-STAs). Based on a determination that low-latency data addressed to a low-latency station (LL-STA) is available for transmission at a MAC layer of the AP, the embodiment then transmits a preemption-indicator signal to the LL-STA and at least one non-LL-STA. Further, the embodiment identifies an A-MPDU of the plurality of A-MPDUs that is scheduled for transmission over a resource unit (RU) designated for transmitting low-latency data. The embodiment then replaces at least one non-low-latency MPDUs (non-LL-MPDUs) associated with the A-MPDU with at least one low-latency MPDUs (LL-MPDUs) addressed to the LL-STA to generate an updated A-MPDU, where a first LL-MPDU of the plurality of LL-MPDUs is a multi-user block acknowledgment request (MU-BAR) frame associated with the LL-MPDUs. Finally, the embodiment transmits the updated A-MPDU consisting of the at least one LL-MPDUs over the RU.
- Latency reduction using preemption within a PHY PPDU
- Encoding a MU-PPDU with A-MPDUs for transmission
- Transmitting a preemption-indicator signal to LL-STA and non-LL-STAs
- Replacing non-LL-MPDUs with LL-MPDUs in an A-MPDU
- Transmitting updated A-MPDU over RU
Potential Applications: This technology can be applied in wireless communication systems to reduce latency and improve the overall efficiency of data transmission.
Problems Solved: This technology addresses the issue of latency in wireless communication networks, particularly in scenarios where low-latency data needs to be prioritized for transmission.
Benefits: - Reduced latency in data transmission - Improved efficiency in wireless communication systems - Enhanced performance for low-latency applications
Commercial Applications: Title: "Wireless Communication Latency Reduction Technology" This technology can be utilized in industries such as telecommunication, IoT, and smart devices to enhance the speed and reliability of data transmission. It can also benefit applications requiring real-time data processing.
Prior Art: Prior research in the field of wireless communication systems has focused on improving latency through various techniques such as beamforming and scheduling algorithms. Researchers have also explored the use of preemption to prioritize certain types of data for transmission.
Frequently Updated Research: Researchers are continuously exploring new methods to further reduce latency in wireless communication systems, including advancements in preemption techniques and resource allocation strategies.
Questions about Latency Reduction Technology: 1. How does this technology compare to existing methods for reducing latency in wireless communication systems? This technology offers a unique approach by using preemption within a PHY PPDU to prioritize low-latency data for transmission, which can significantly improve overall system efficiency.
2. What are the potential challenges in implementing this technology in real-world wireless networks? Implementing this technology may require updates to existing protocols and hardware to support preemption and efficient resource allocation for low-latency data transmission.
Original Abstract Submitted
Disclosed herein are apparatuses and a method for implementing latency reduction using preemption within a physical layer (PHY) protocol data unit (PDU) (PPDU). An embodiment operates by encoding a multi-user PPDU (MU-PPDU) for transmission, where, the MU-PPDU comprises a plurality of aggregated media access control (MAC) PDUs (A-MPDUs) addressed to respective non-low-latency stations (non-LL-STAs). Based on a determination that low-latency data addressed to a low-latency station (LL-STA) is available for transmission at a MAC layer of the AP, the embodiment then transmits a preemption-indicator signal to the LL-STA and at least one non-LL-STA. Further, the embodiment identifies an A-MPDU of the plurality of A-MPDUs that is scheduled for transmission over a resource unit (RU) designated for transmitting low-latency data. The embodiment then replaces at least one non-low-latency MPDUs (non-LL-MPDUs) associated with the A-MPDU with at least one low-latency MPDUs (LL-MPDUs) addressed to the LL-STA to generate an updated A-MPDU., where a first LL-MPDU of the plurality of LL-MPDUs is a multi-user block acknowledgment request (MU-BAR) frame associated with the LL-MPDUs. Finally, the embodiment transmits the updated A-MPDU consisting the at least one LL-MPDUs over the RU.
