METHOD AND DEVICE FOR RECEIVING PPDU VIA MULTIPLE RU IN WIRELESS LAN SYSTEM

Smart overview of the Invention

The method and device focus on receiving a Physical Protocol Data Unit (PPDU) in a wireless LAN system, specifically utilizing multiple Resource Units (RUs) within a broadband. A receiving station (STA) decodes a PPDU received from a transmitting STA. The PPDU consists of a control field and a data field, where the latter is received via aggregated RUs when using a 160/80+80 MHz band. This aggregation involves both primary and secondary 80 MHz channels.

Technical Background

Advancements in WLAN systems, such as the IEEE 802.11ax standard, have introduced techniques like orthogonal frequency division multiple access (OFDMA) and downlink multi-user MIMO. The proposed method is relevant for next-generation standards like the extreme high throughput (EHT) or IEEE 802.11be, which aim to enhance bandwidth and PPDU structure while maintaining backward compatibility with existing systems.

Implementation Method

The proposed method involves configuring multiple RUs for transmitting and receiving PPDUs in an OFDMA scheme. A receiving STA processes PPDUs received over broadband channels. For 160/80+80 MHz bands, the data field is processed through a second multiple RU aggregated from a 484-RU and other RUs across primary and secondary channels. The first multiple RU aggregates various smaller RUs in a specific frequency order.

Technical Benefits

By supporting preamble puncturing and combining RUs of different sizes within an OFDMA framework, the method enhances transmission efficiency and throughput in wireless LAN systems. This approach is particularly beneficial for systems adopting next-generation standards like IEEE 802.11be, which require improved signaling techniques to handle increased spatial streams.

Applications

The described technology applies to various wireless communication systems, including WLAN standards like IEEE 802.11a/g/n/ac/ax and emerging standards such as EHT or IEEE 802.11be. It is also applicable to mobile communication systems based on LTE or 5G NR standards, supporting diverse devices like mobile phones, vehicles, or computers for services ranging from data communication to autonomous driving.