Why is the signal strength that a STA receives from an AP weak


The possible causes are:
- The transmit power of the AP is low. In this case, increase the transmit power.

- The antenna system of the AP (indoor DAS AP) is not properly deployed.
1. The output power on antenna interfaces is low because the AP connects to excess antennas. Or the feeder lines are too long.
2. The passive devices (combiner, splitter, and coupler) do not comply with design principles or specifications or are not properly connected.
3. The passive devices have unloaded interfaces.

- The STA is far away from the AP's antennas, so the signal loss is large.

- Signals are blocked by a beam, post, concrete wall, metal door, or other obstacles between the STA and antennas. In this case, change the antenna installation positions.

Other related questions:
What can I do if the Wi-Fi signal strength is weak?
To resolve this issue: Check the Wi-Fi network or contact your local supplier for assistance.

How do WLAN devices restrict access from weak-signal STAs
For details about how to configure an AC to restrict access from weak-signal STAs, see: V200R005: Restricting Access from Weak-Signal or Low-Rate STAs V200R006: Configuring Smart Roaming

What STA information can be displayed on a WLAN device
1. Number of STAs associated with an AP For V200R005, run the display station assoc-num command. For V200R006, run the display station ap-id xx command. 2. STA information For V200R005, run the display station assoc-info sta sta-mac command. For V200R006, run the display station sta-mac sta-mac command. The display contents vary depending on versions. The following uses V200R005C10 as an example: display station assoc-info sta d420-6df4-f37e Station mac-address : d420-6df4-f37e //STA mac Station ip-address : //STA IP Station gateway : Associated SSID : jsldoc //SSID Station online time(ddd:hh:mm:ss) : 000:00:04:20 //Online time The upstream SNR(dB) : 30.0 The upstream aggregate receive power(dBm) : -79.0 Station connect rate(Mbps) : 23 //Rate Station connect channel : 1 //Channel Station inactivity time(ddd:hh:mm:ss) : 000:00:00:00 ...... Station's RSSI(dBm) : -66 //Single strength Station's Noise(dBm) : -109 Station's radio mode : 11b //Network type Station's AP ID : 6 //AP ID (supported only by V200R005C00) Station's Radio ID : 0 //0 indicates 2.4G, and 1 indicates 5G (supported only by V200R005C00). Station's Authentication Method : OPEN Station's Cipher Type : NO CIPHER Station's User Name : d4206df4f37e Station's Vlan ID : 28 Station's Channel Band-width : 20MHz Station's asso BSSID : dcd2-fc9a-2110 Station's state : Asso with auth Station's Qos Mode : NULL Station's HT Mode : - Station's MCS value : 0 Station's NSS value : 0 Station's Short GI : support Station's roam state : No

Why does a STA still receive 802.11b/g signals after 802.11n is enabled on an AP
According to IEEE 802.11n drafts, data cannot be transmitted at a full rate when passwords are unicast in WEP or TKIP encryption mode. If these encryption modes (such as WEP and WPA-TKIP) are used, the maximum data transmission rate is only 54 Mbit/s. Similarly, in TKIP or WEP encryption mode, an 802.11 b/g/n NIC can only associate with an AP in 802.11g mode. Therefore, the signal rate is 54 Mbit/s instead of the rate in the 802.11n protocol.

STA receives strong signals from an AP, but the network speed is slow. How can I locate the problem
Locate the problem as follows: 1. Check the number of users associated with the AP. The number of associated users cannot exceed the upper limit allowed by the AP. 2. Check the channel and power of the AP. The channel and power must be set to fixed values, but cannot use default settings. 3. Change the connection mode on the AP to high-speed access. 4. Check whether upstream bandwidth limit is set on the AP. 5. Check antennas on APs: - The interval between the antennas on different APs cannot be smaller than 10 m. - The interval between the antennas on the same AP cannot be smaller than 7 m. 6. Use the dedicated tools to scan adjacent-channel interference. Check whether there is strong interference near the STA.

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