公开(公告)号：SG11202002026SA

公开(公告)日：2020-05-28

申请号：SG11202002026S

申请日：2018-10-18

Applicant: QUALCOMM INC

Inventor： VERMA LOCHAN ,  TIAN BIN ,  VERMANI SAMEER ,  YANG LIN ,  CHEN JIALING ,  CHERIAN GEORGE

IPC: H04L27/26 ,  H04L5/00 ,  H04W72/04

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for multiplexing clients of different generations in trigger-based transmissions, including trigger-based transmissions in extremely-high throughput (EHT) Wi-Fi systems. An access point (AP) may generate a trigger frame compatible with two types of stations (STAs), such as EHT STAs and legacy (or high efficiency (HE)) STAs. The AP may transmit the trigger frame to a group of STAs, where legacy STAs may process the trigger frame a legacy trigger frame. EHT STAs may process the trigger frame to determine resource unit (RU) allocations for uplink transmissions in a bandwidth greater than a legacy bandwidth. An EHT STA may determine the resources in the larger bandwidth based on an EHT RU allocation table, a legacy RU allocation table and an additional bit in the trigger frame, or an ordering of RU allocations in the trigger frame.

公开(公告)号：SG11202001992SA

公开(公告)日：2020-04-29

申请号：SG11202001992S

申请日：2018-10-09

Applicant: QUALCOMM INC

Inventor： VERMANI SAMEER ,  TIAN BIN ,  CHEN JIALING ,  YANG LIN ,  VERMA LOCHAN

IPC: H04L5/00 ,  H04B7/0413 ,  H04L27/26 ,  H04W74/00 ,  H04W84/12

Abstract: This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for managing high volumes of space-time-streams in Wi-Fi systems. An access point (AP) may transmit packets including long training field (LTF) sections using a number of space-time-streams greater than eight. Mobile stations (STAs) in the system may or may not be capable of processing this number of streams. The AP may modulate an LTF section using a matrix with dimensions smaller than the number of streams by using tone-interleaving or by performing modulation with separate matrices in time and frequency. In some other implementations, the AP may split the antennas for transmission into groups, each group transmitting either different packets in a subset of streams or a same packet in a subset of tones. In further implementations, the AP may combine multiple space-time-streams into a super stream that supports reception at different types of STAs.