区分这几种帧格式明确 802.3 和 802.11 两种帧格式即可 MSDU: 首先 MSDU 是802.3的帧格式,从以太口发出去的帧都是MSDU格式的 A-MSDU: AMSDU 是把几个MSDU 聚合在一起并从以太网口发出去的帧 MPDU: MPDU属于802.11的帧, 从协议栈发下来的数据首先先被转化成802.3格式的MSDU,之后经过wireless driver,继而通过....
AMSDU vs AMPDU: A Brief Tutorial on WiFi Aggregation Support.Gautam D. Bhanage
Each AMSDU serves as a single MAC protocol data unit (MPDU). Another layer of aggregation is introduced when MPDUs can be packed together to deliver an aggregated MPDU (AMPDU). In this brief tutorial we discuss (1) why aggregation is useful at all, (2) why two layers of aggregation ...
The hardware has enough buffer to receive like 8K for an MPDU. So tell mac80211 that we can receive AMSDU in AMPDU.
>> tree) supports this AMSDU and AMPDU packet aggregation. Is it true? > > ath9k supports only AMPDU aggregation currently. Additionally it *may* support RX AMDSU, we just haven't tested it. TX AMSDU though is not there for sure as don't even have that in ...
首先,一般AMPDU的聚合,需要 addba 协商,addba req/resp交互后,会有缓冲区大小的字段(Number of Buffers),这个地方一般是64,然后在11ax上面,可以支持到256。这个 Number of Buffers 主要是计分板,用来做帧重组的。 然后提示(1 buffer = 2304 Bytes)。2304是一个MSDU的最大值,个人理解,这里应该没有考虑AMSDU,...
要开启。分片阈值值是用来确定数据包的大小的。被分成多个包之前，数据包错误率较高，网速慢，可以稍微增加的阈值片，片阈值设置太低，可能会降低网络性能。所以一般都要打开华硕优化ampdu聚集，增加阈值。但是没有必要追求最好的结果，只要打开华硕优化ampdu聚集，就会设置为默认值，按照出厂默认设置，可以...