接入点与场所覆盖估算器
计算您的场所所需的无线接入点、交换机数量及 PoE 功率预算。
估算您的接入点需求
1. Venue area size
2. Structural layout & wall material
Select wall type to factor in RF signal attenuation loss.
3. Client device density
Estimate client density in peak usage areas.
Approx. 1 device per 50 sq ft
4. Bandwidth activity profile
Select bandwidth demand per active device.
5. WiFi hardware generation
Select the WiFi standard of planned access points.
Current enterprise standard with OFDMA and MU-MIMO for dense client environments.
Coverage signal calculation requires 4 APs for 7500 sq ft. High-density capacity calculation requires 3 APs to serve 150 concurrent client devices using WiFi 6 / 6E. Final recommendation: 4 APs.
Hardware vendor deployment notes
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Planning a physical rollout? Speak with a Purple wireless network architect to receive a custom RF attenuation report, heat map simulation, and hardware vendor discount review.
Understanding signal attenuation and capacity limits
Wireless networks are constrained by both physical RF coverage and client device capacity limits. In large open spaces, a single high-power access point can project a signal over a wide radius, but a high concentration of connected smartphones and laptops will saturate radio channels long before signal coverage degrades. This calculator models both constraints simultaneously and recommends the higher access point count to eliminate network congestion.
精准的网络容量规划
规划无线覆盖需要对物理障碍物、用户密度和应用带宽需求进行建模。本计算器可帮助估算构建高性能访客或企业网络所需的设备。
建模的关键参数
- 信号穿过石膏板、砖块、玻璃和混凝土墙时的衰减。
- 适用于标准办公室、高密度酒店及款待业、以及体育场馆环境的设备密度限制。
- 以太网供电 (PoE) 总功率预算及交换机端口需求。
Signal attenuation benchmarks by building material
Radio frequency signals degrade as they penetrate structural barriers. Use these attenuation values to refine coverage estimates when deploying access points across multi-room facilities.
| Building material | Frequency band | Signal loss (dB) | Typical coverage radius |
|---|---|---|---|
| Drywall / Office Partition | 2.4 GHz / 5 GHz | 1.5 - 3 dB | 2,000 - 3,000 sq ft (180 - 280 sq m) |
| Clear Window Glass | 2.4 GHz / 5 GHz | 2 - 4 dB | 2,000 - 2,500 sq ft (180 - 230 sq m) |
| Solid Brick Wall | 2.4 GHz / 5 GHz / 6 GHz | 6 - 10 dB | 1,000 - 1,400 sq ft (90 - 130 sq m) |
| Reinforced Concrete / Lift Shaft | 2.4 GHz / 5 GHz / 6 GHz | 12 - 18 dB | 600 - 900 sq ft (55 - 85 sq m) |
Power over Ethernet (PoE) switch planning
Modern WiFi 6, 6E, and WiFi 7 enterprise access points feature multi-gigabit uplinks and Bluetooth radios that require high power draw from network switches. Matching access points with the correct PoE standard prevents random access point reboots during peak client loads.
关于WiFi接入点规划的常见问题
一个WiFi接入点可以覆盖多少平方英尺？
在带有石膏板或玻璃隔断的开放式室内环境中，一个标准的企业级接入点可覆盖 1,500 至 3,000 平方英尺（140 至 280 平方米）。在具有实心砖墙或混凝土墙的密集建筑布局中，由于 RF 衰减，每个接入点的有效覆盖范围会减少到 800 至 1,200 平方英尺。
如何计算高密度场所的接入点密度？
高密度接入点计算优先考虑并发客户端容量，而非物理覆盖面积。在流媒体需求较高的环境（如体育场或礼堂）中，建议每 15 至 30 台活跃设备配置 1 个接入点；对于标准办公室或咖啡厅，建议每 40 至 50 台设备配置 1 个接入点。
以覆盖为导向和以容量为导向的 AP 规划有什么区别？
以覆盖为导向的规划根据物理空间和 RF 信号范围来计算接入点，以消除盲区。以容量为导向的规划则根据连接的客户端设备总数和每台设备所需的带宽吞吐量来计算接入点。企业级设计始终取这两个计算值中的较大者。
企业级 WiFi 6 和 WiFi 7 接入点需要多少 PoE 交换机功率预算？
标准 WiFi 5 接入点使用 PoE（802.3af，每端口最高 15.4W）。企业级 WiFi 6 和 6E 接入点需要 PoE+（802.3at，每端口最高 30W）来为多千兆射频和 Bluetooth LE 射频供电。配备 4x4 或 8x8 MU-MIMO 射频的高级 WiFi 7 接入点可能需要 PoE++（802.3bt，每端口最高 60W）。
墙体材质如何影响 WiFi 信号范围？
石膏板造成的信号衰减极小（1.5 至 3 dB 损耗），实心砖会造成中度衰减（6 至 10 dB 损耗），而钢筋混凝土或电梯井则会造成重度衰减（12 至 18 dB 损耗）。重度衰减会急剧缩小接入点的覆盖范围。
Deploying guest WiFi across your estate?
Calculating AP quantities is the first step. Purple integrates with Cisco Meraki, HPE Aruba, Ruckus, and Juniper Mist to deliver captive portal login, marketing automation, and location analytics.
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