I just wanted that the vendor could add a detailed guide about BLE calculation and design.
the Bot did't provide any exact links on cisco.com (answered that it doesn't have an access to the internet(lie))
it agregated and gave me this answers(I've excluded several obvious lines):
In general, the maximum number of BLE connections that can be supported by an AP is typically determined by the AP's radio and CPU capacity.
There are different methods for calculating the maximum number of BLE connections that can be supported by a specific AP, but there is no one formula that universally applies to all scenarios. Some factors that can influence the maximum number of BLE connections include the number of radio channels available, the bandwidth of each channel, the power output of the radio, and the processing power of the AP's CPU.
In general, the maximum number of BLE connections that an AP can support will be specified by the manufacturer in the AP's documentation or specifications. This information may also be available through the manufacturer's technical support or customer service channels.
It's worth noting that connecting a large number of BLE sensors to a single AP can cause network congestion and potentially lead to performance issues. To avoid these issues, it may be necessary to deploy multiple APs to support a large number of BLE sensors.
Bluetooth Low Energy (BLE) devices and access points (APs) share the air/spectrum by using a method called frequency hopping spread spectrum (FHSS). FHSS is a technique where the transmitter and receiver rapidly switch between multiple channels within a specific frequency band in a pseudo-random sequence. This allows multiple devices to share the same frequency band without interfering with one another.
When a collision occurs, meaning two or more devices transmit data on the same channel at the same time, the data is corrupted and has to be retransmitted. In the case of BLE, the devices use a mechanism called Adaptive Frequency Hopping (AFH), which helps to mitigate the effects of collisions and interference. AFH works by scanning the available channels and identifying the ones with the least interference, and then dynamically adjusting the channel hopping sequence to avoid those channels that are experiencing interference.
If a signal from one sensor can be heard by several APs, it is possible that the sensor may receive multiple copies of the same packet of data, which can result in confusion and data corruption. To avoid this, BLE devices and APs use a technique called packet filtering, where only packets that meet certain criteria, such as the destination address, are accepted and processed. This helps to ensure that data is only received by the intended recipient and reduces the chances of data corruption due to interference from multiple APs.
