白丝美女被狂躁免费视频网站,500av导航大全精品,yw.193.cnc爆乳尤物未满,97se亚洲综合色区,аⅴ天堂中文在线网官网

Slotted OFDMA based channel access

專利號
US10980057B2
公開日期
2021-04-13
申請人
ZTE Corporation; Yonggang Fang（CN Shenzhen）
發(fā)明人
Yonggang Fang
IPC分類
H04W4/00; H04W74/00; H04L27/26; H04W74/08
技術(shù)領(lǐng)域
sofdma,ca,txop,trigger,frame,stations,ap,channel,slot,access
地域： Guangdong

摘要

Access to a wireless medium is controlled based on contention arbitration. A certain number of wireless devices are allowed by an access point to contend for a transmission opportunity. A trigger frame is used to communicate access opportunities to multiple devices. A beacon transmission may additionally be used for communication of access opportunities.

說明書

If the AP detects many empty CA slots in a CA-TXOP, the AP could reduce the CWmin.

If the AP detects collisions in many OFDMA sub-channels, it could increase the CWmin.

If there are many associated stations in BSS, the AP could increase the number of CA slots to allow more stations to perform channel access in a CA-TXOP and reduce the access delay.

In some cases, none of backoff counter of SOFDMA stations reaches 0 when receiving a trigger frame from the AP. Therefore, no station is able to transmit the trigger response frame in the first CA slot even they have some buffered data for UL transmission. In this saturation, the CA slot in CA-TXOP is empty and wasted.

FIG. 7A shows the example of SOFDMA based channel access mechanism 700 with early response to reduce such waste of CA slot.

權(quán)利要求

1
微信群二維碼
意見反饋