AP hotspot refers to "wireless access point", which is a bridge connecting wired network and wireless network. Its main function is to connect various wireless network clients together, and then connect the wireless network to the Ethernet net. APs with access point client mode can connect wirelessly between APs, thereby expanding the coverage of WiFi shared Internet access. A camera with an AP hotspot means that the camera itself can emit a WIFI hotspot, and you can use your mobile phone or computer to connect to the camera through this WIFI hotspot.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
If the camera has AP hotspot settings, the mobile phone can connect to the camera within the hotspot range to view/playback the surveillance even if there is no network.
#So what is an AP hotspot?
AP is the abbreviation of Access Point (wireless access point). It is a HUB in a traditional wired network and is also the most commonly used device when setting up a small wireless LAN, such as an enterprise's internal network deployment. The AP is equivalent to a bridge connecting the wired network and the wireless network. Its main function is to connect various wireless network clients together and then connect the wireless network to the Ethernet. APs with access point client mode can connect wirelessly between APs, thereby expanding the coverage of WiFi shared Internet access. A camera with an AP hotspot means that the camera itself can emit a WIFI hotspot, and you can use your mobile phone or computer to connect to the camera through this WIFI hotspot.
There are two types of wireless APs, one is simple type and the other is extended type.
A simple wireless AP is equivalent to a wireless switch and only provides wireless signal transmission function. That is, the network signal is compiled by the wireless AP, and the electrical signal is converted into a wireless signal for transmission, forming WiFi shared network coverage.
Extended AP is a wireless router, which is mainly used for user Internet access and wireless coverage.
Are you a little confused when you see this? In fact, to put it simply, the AP hotspot of the camera can be understood as the wireless signal emitted by the camera itself. Within a certain range, the mobile phone can receive and connect to this wireless signal and transmit data (no charges will be incurred).
AP functions
WDS, the wireless hotspot distribution system, it It is a special function in wireless APs and wireless routers. Simply put, it is the relay and bridging function of AP. It can realize communication between two wireless devices and can also play a role in amplifying the signal. The SSID of the products can also be different. This is a very practical function. For example, if there are three neighboring households, each household has a wireless router or AP that supports WDS, so that the wireless signal can be covered by the three households at the same time, making mutual communication more convenient. However, it should be noted that the WDS devices supported by each brand of wireless router are limited (generally 4-8 devices can be supported), and WDS functions of different brands may not be able to link successfully.
- Functions possessed by wireless AP
#An important function of AP is relay. The so-called relay is to connect two wireless points. The wireless signal is amplified once so that the remote client can receive a stronger wireless signal. For example, I place an AP at point a, and there is a client at point c. There is a distance of 120 meters between them. The signal from point a to point c has been weakened a lot, so I place an AP at point b, 60 meters halfway. As a relay, the signal of the client at point c can be effectively enhanced, ensuring transmission speed and stability.
Another important function of AP is bridging. Bridging is to link two endpoints to realize data transmission between two wireless APs. If you want to connect two wired LANs, you usually choose to bridge through AP. For example, I have a wired LAN consisting of 15 computers at point a, and a wired LAN consisting of 25 computers at point b. However, the distance between point a and point a is very far, more than 100 meters, and it is impossible to connect through wired connections. So what? What about connecting two LANs together? This requires setting up an AP at point a and point b, and turning on the AP bridging function, so that the LANs at point a and b can transmit data to each other. It should be reminded that for APs without WDS function, there is no wireless signal coverage at the two points after bridging.
The last function is "master-slave mode". The AP working in this mode will be regarded as a wireless client by the master AP or wireless router, such as a wireless network card or wireless module. This can facilitate the unified management of sub-networks by the network management and realize point-to-multipoint connection. The AP client is multi-point, and the wireless router or main AP is one point. This function is often used in the connection between wireless LAN and wired LAN. For example, point a is a wired LAN composed of 20 computers, point b is a wireless LAN composed of 15 computers, and point b already has a wireless router. If a wants to access point b, add an AP at point a, turn on the master-slave mode, and connect the AP to the switch at point b, so that all computers at point a can connect to point b.
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