How to select antennas for APs

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Antennas receive and send radio signals. Select antennas for APS by referring to HUAWEI Access Points Antenna Quick Start. Contact Huawei local offices to purchase antennas. Antennas from other vendors are not recommended for working with Huawei APs.
Consider the following points when selecting antennas:
1. Usage scenario and purpose
Indoor antennas are generally used to provide signal coverage in indoor scenarios while outdoor antennas are used to provide signal coverage and bridging backhaul in outdoor scenarios.
2. Local standards and regulations
The transmit power and maximum gain of antennas must strictly comply with local standards and regulations.
3. Shape and distance of the coverage or backhaul area
- Coverage: Directional antennas are recommended in long and narrow areas while omnidirectional antennas are recommended in round and square areas.
- Backhaul: Directional antennas are usually used. If the backhaul distance is long, use high-gain antennas; if backhaul targets are concentrated, use small-angle antennas.
4. Signal transmission band (2.4 GHz/5 GHz)
- Coverage: To provide 2.4 GHz and 5 GHz signal coverage, use 2.4Gand 5G antennas in the same area or use dual-band antennas.
- Backhaul: Only 5 GHz antennas are used for backhaul.

Other related questions:
How are APs and antennas selected based on site environments
Huawei APs include indoor APs, indoor DAS APs, and outdoor APs. Select appropriate APs and matching antennas based on customers' requirements for signal coverage. In indoor environments with a small area but a high user density, such as meeting rooms, offices, airports, and bars, we can choose indoor APs with omnidirectional antennas. In indoor environments with a low user density, such as office buildings, hotels, and dormitories, use indoor DAS APs to provide hotspot coverage. When outdoor coverage is required, use high-power outdoor APs with high-gain directional or omnidirectional antennas. Directional antennas are usually placed on a building's roof to provide signal coverage for opposite buildings. Omnidirectional antennas can be placed in open areas such as parks and residential communities. Select AP models and antennas based on the onsite environment and customer requirements.

Selecting APs and antennas based on site conditions
Huawei APs include indoor, indoor distributed, and outdoor APs. Select appropriate APs and antennas based on customers' requirements for signal coverage and site conditions. - Use indoor settled APs with omnidirectional antennas in indoor environments with small areas, dense users, and high capacity demands, such as meeting rooms, offices, airports, and bars. Use indoor distributed APs to provide hotspot coverage in indoor environments with a small number of users, such as office buildings, hotels, and dormitories. Select APs based on customer requirements. - In outdoor scenarios, use high-power outdoor APs with high-gain directional or omnidirectional antennas. Directional antennas are usually placed on building roofs to provide signal coverage for opposite buildings. Omnidirectional antennas can be placed in open areas such as parks and residential communities. Select APs and antennas based on site conditions and customer requirements.

Appearance, specifications, and installation methods of common external antennas on APs
For specifications, pictures, and installation methods of Huawei's common external antennas on APs, see HUAWEI Access Points Antenna Quick Start. Contact Huawei local offices to purchase antennas. Antennas from other vendors are not recommended for working with Huawei APs.

How does the AP bandwidth change if MIMO antennas are not used
802.11n APs support a maximum of 150 Mbit/s bandwidth if MIMO antennas are not used.

Can feeder cables be used to connect antennas to APs
For details about how to connect antennas to APs using feeder cables, see Connecting RF Cables of the antennas.

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