Patent ID: 9143268
Filing Date: 2015-09-22
Classification: H04B,H04L,H04W

Abstract:
1. A wireless station (STA), comprising: a transceiver operable for communicating in a wireless network, wherein said transceiver is adapted to use signaling that enables said wireless station to communicate necessary information including a desired modulation coding scheme (MCS); wherein said transceiver enables error handling at said transceiver if the wireless station (STA) is an uplink multi user multiple input multiple output (UL MU MIMO) wireless station; wherein error handling is initiating success backoff or exponential backoff when at least one UL MU MIMO transmission is not received correctly; wherein said transceiver is capable of communicating with an access point (AP) in said wireless network and is capable of sending to said AP a Clear To Transmit (CTX) frame, said CTX frame including a list of STAs' association identifications (AIDs), and max MCS or stream number for each STA; wherein when one UL MU MIMO transmission from said STA to said access point (AP) is not received correctly, if an additional wireless station communicating in said wireless network does not receive a block acknowledgment (BA) for itself but has received BAs for other STAs from said AP, said STA will initiate a success backoff by setting contention window (CW)=CWmin since said AP can decode any data frame in said UL MU MIMO transmission and send back at least one BA if there is no collision at the AP, thereby said STA should not initiate exponential backoff, and wherein if said STA has more traffic to send and has received at least one BA from said AP even if said BA is not intended for itself, it can initiate success backoff and if no BA is received from said AP, said STA initiates exponential backoff.