![intervalo beacon intervalo beacon](https://www.qsl.net/lu9dpd/136kHz/inst_01_022_s.jpg)
♠ HT Delayed Block ACK: Transmitter capability of supporting HT-Delayed BlockAck. ♠ HT Rx STBC: Is transmitter capable of receiving frame which is using STBC technology? ♠ HT Tx STBC: Is transmitter capable of transmitting frame using STBC technology? ♠ HT Short GI for 40MHz: SGI support for 40MHz. Check MCS index table for better understanding.
![intervalo beacon intervalo beacon](https://sc01.alicdn.com/kf/HTB15r7bdMjN8KJjSZFgq6zjbVXae/230045164/HTB15r7bdMjN8KJjSZFgq6zjbVXae.jpg)
If this bit is 0 (SGI is not supported for 20MHz), then the highest data rate is 65Mbps. Example: If device supports till MCS7 then and this bit is 1 (SGI supported for 20MHz), then the highest data rate is 72.2Mbps. ♠ HT Short GI for 20MHz: SGI support for 20Mhz. This is pure 802.11n frame which cannot be understood by 11bga (Legacy) devices. ♠ HT Green Field: This field indicates if transmitter is able to receive PPDUs with Green Field (GF) preamble or not. This is not widely used in actual devices. ♠ HT SM Power Save: Spatial Multiplexing Power Save is a new PS introduced in 802.11n. ♠ HT Support channel width: Sender supports 20MHz only orĤ0MHz (which means 20/40MHz). This field indicates if the transmitter is capable of receiving any frame which is using LDPC. ♠ HT LDPC coding capability: Low Density parity check code is one type of advanced error correcting code. HT Capabilities Info field: HT Capabilities The length of HT capabilities is set to 26.ģ. The element ID of “HT Capabilities” is 45.This is a fix number. Now we can follow this screenshot for explanation of first three elements. Here is the picture for sub elements of HT Capabilities. In this article we will try to see what are the fields are added in Beacon for 11n support and the meaning of each fields. Before proceeding for this post it’s recommended to go through 11bgBeacon post. We have already discussed about basic 11bg Beacon frame structure in another post. So at the moment i am wondering if i should use a bll654 (it has a nrf52840 soc) which comes programed already and no special installations are required (it is more expensive i know), but i don't know to what extent i can control it through the AT commands, like setting broadcast intervals and use of all the 31 bytes of data to my needs without having fixed big headers.Tags : 11n 802.11n beacon Beamforming wireshark
![intervalo beacon intervalo beacon](https://gagadget.com/media/uploads/2015-10/wi-fi/image010.png)
#INTERVALO BEACON SERIAL#
It is not clear to me if i can use the dongle nrf52840 as it is without programing it, just sending serial data and have some AT command list that i can operate it through that. So i was toggling myself between working on an extended beacon broadcast, to checking how much data i can transfer in the 31 byte message and how many times i can transfer it ,so that if one 31 byte message can contain data for 10 units, i have to see that i can send the message to all 150 units every one second.I would have sent one big message to all units ,if it was possible, and maybe send it multiple times in a second just to make sure every unit got it. I was going for broadcasting and beacon to avoid making connection with each unit which i think will take a lot of time on Acks and reconnecting with a different unit every time.I have no power saving issues since power will be given to all units all the time.
#INTERVALO BEACON .DLL#
dLL for the beacon broadcasting gateway or dongle or whatever that is connected to the pc which is running some python app (will need some help with that later)
#INTERVALO BEACON SOFTWARE#
a software for 150 units that receive data (specific for each of them) from one broadcasting unit that is connected to a pcĢ.