Poor WiFi signal in large apartments? Mesh networking vs wireless relay, this article explains which solution is the most valuable
the house is bigger, the WiFi signal gets worse - the bathroom, balcony, bedroom corner, you can't connect at every turn.
some people say that a wireless trunk is enough, while others say that Mesh networking is necessary. What is the difference between the two? Is mesh an IQ tax? This article makes it clear.
conclude first
Mesh is not an IQ tax, but not everyone needs it either. A single router below 80 square meters is sufficient, and more than 120 square meters can choose Mesh or AP according to your budget.
Problem Diagnosis: What Causes Poor WiFi Coverage in Your Home?
first investigate the real cause of the poor signal and then decide which plan to use:
self-test method:
- turn on your phone's WiFi and analyze how many neighbors have WiFi signals
- if the neighbor has a lot of WiFi (more than 10), the channel is congested, not a coverage issue
- walk to each room to measure your speed (with the SpeedTest APP on your phone), Record the internet speed of each location
| speed test results | Instructions |
| > 50Mbps | is fine, no problem with coverage |
| 10-50Mbps | there are interferences or old equipment |
| < 10Mbps or no connection at all | signal coverage is insufficient |
Decision after self-test:
- If only 1-2 corners have a weak signal, → wireless repeater or signal amplifier (100-200 yuan) is sufficient
- if multiple rooms/floors have poor signal → Mesh networking
- If newly renovated or can be wired → AC + AP scheme (optimal)
Option 1: Mesh Networking (Best for Homes Without Network Cables)
Core Principles ofMesh:
Mesh is not a simple "one signal to another", but all nodes form an intelligent network where devices automatically connect to the nearest node and switch between nodes seamlessly.
analogy:
- wireless relay : walkie-talkie, one to the next, 50% off the speed per hop
- Mesh: A WiFi name, all nodes are covered like Starbucks WiFi, and wherever you go, you will automatically connect to the nearest one
Mesh's three core benefits:
- unified SSID: There is only one WiFi name at home, and you can automatically connect to the optimal node wherever you go, without manually switching
- Seamless Roaming : Supports 802.11k/v/r protocol, and the network is not interrupted when switching (games and video calls will not lag)
- self-healing network : If one node is broken, other nodes will automatically make up for it and will not completely disconnect the network
Mesh Product Recommendations (by Budget):
Entry-level Mesh (500-1000 yuan/set):
- TP-Link Yizhan Series (XDR1850): The cheapest Mesh set, about 400 yuan for two units
- Xiaomi AX3000 Mesh: WiFi 6, cost-effective, about 600 yuan for two units
- Redmi AX3000: compatible with Xiaomi Mesh, a little cheaper
Mid-range Mesh (1000-2000 yuan/set):
- ASUS AX82U + AX82U two: gaming router, Mesh compatibility is good
- TP-Link High-End Line (XDR5480 Mesh): Strong signal with 2.5G network port
- Linksys Velop MX4200: Excellent stability, no tossing
High-end Mesh (more than 3,000 yuan/set):
- ASUS AiMesh (3 AX92U or above): Strong coverage, roaming games
- Netgear Orbi Series: Villa-grade coverage, stable and reliable
- Leading: Linksys Velop MX5300: Tri-Band Mesh to Reduce Interference between Nodes
Mesh Setup steps (taking TP-Link as an example):
- set the first router to the Internet (master node) normally
- power on the second router and place it near the primary node
- press the "Expand" button on the master node (usually behind it)
- also press the "Easy Expansion" button on the secondary node
- wait for the indicator light to turn green and the two nodes will be paired automatically
- move the subnode to the location that needs to be covered (it is recommended to place it in the middle of the two devices)
placement principle : the distance between each node should not exceed 10 meters, and it is best not to exceed two walls in the middle. It is best for both nodes to "see" each other.
Mesh Common Myths:
❌ myth 1: The more Mesh nodes, the better
- too many nodes interfere with each other, it is recommended to cover 30-50 square meters of each node
- three bedrooms, one living room, and two are enough, don't buy three and stuff them into a small house
Myth 2: Mesh nodes are placed casually
- nodes are best seen directly or separated by a wall
- do not place nodes in corners, cabinets, behind load-bearing walls
Myth 3: Mesh does not require a network cable
- Mesh Wireless backhaul between nodes, and half of the wireless bandwidth will be allocated to communication between nodes
- wired backhaul (nodes connected by network cables) is the best solution, which is 2-3 times faster than wireless backhaul
- if you can wire it, it is highly recommended to connect the nodes with a network cable (Gigabit network cable is sufficient)
Option 2: AC + AP (the first choice for decoration and embedding, the best experience)
Suitable for people: Newly renovated, network cables are installed, and the best experience is pursued.
principle:
- AC (Wireless Controller): One in a weak current box to manage all AP
- AP (Wireless Access Point): One per room, powered over network cable (PoE)
- unified WiFi name for the whole house, and automatic switching between APs, a truly business-grade experience
Why the Experience is the Best :
- AP Installed directly in every room, ceiling/wall mounted, the signal is right above your head
- wired backhaul (network cable power), there is no bandwidth loss between nodes
- commercial-grade roaming protocol and is more stable than Mesh
Recommended Products:
| product | set price | suitable area | Instructions |
| TP-Link EAP615 WALL | about 600 yuan/3 | 100-150㎡ | wall APs that don't take up much space |
| Huawei AirEngine 5760 | about 1500 yuan/3 | 150-200㎡ | enterprise-level, stable |
| UBNT UniFi Dream Machine + FlexHD | about 2500 yuan | 200㎡+ | geek's first choice for visual management |
Cons:
- need to lay out network cables (at least one per room) during decoration
- has a high barrier to entry and requires a little network knowledge
- debugging is more complex than Mesh
Scheme 3: Wireless Relay (Temporary Blinding, Not Recommended for Long-term Use)
Applicable scenarios: Temporarily replenish the signal in a corner, don't want to change the router, and don't want to spend money.
Principle of Wireless Relay:
one device receives the main routing signal and forwards it out. The device is connected to the relay signal, not the main route signal.
disadvantages (fatal):
- 50% discount on network speed: Wireless relay should allocate half of the bandwidth to the backhaul, and the actual speed should be half left
- different SSID: The WiFi name of the trunk is usually different from the main route, and you have to manually switch where you go
- Delay increases : One more hop forwarding, poor game and video call experience
- Unstable : The relay equipment has poor performance and is prone to crash after running for a long time
when can it be used:
- temporarily add a signal to the balcony/toilet
- budget is extremely low (repeaters that can be bought for tens of yuan)
- don't have high requirements for internet speed (just look at WeChat)
recommend this if you want to use it:
don't buy a separate wireless repeater (the repeater signal is also weak), it is recommended to set the old router as a wireless repeater :
- old router is powered on and does not connect to the WAN port
- go to Settings → find "Working Mode" →"Wireless Relay"
- search for the main WiFi, connect, enter the password
- the LAN port of the old router can still be plugged in for
tip: The WiFi name of the trunk can be set to be the same as the main route, but this will cause the device to "float" between the two signals, which may cause instability. If it is not too much trouble, the two names are separated and the device is selected manually.
Option 4: Signal amplifier (cheapest, most tasteless)
principle is the same as wireless relay, but it is made in the shape of a small plug.
Recommendation Index: ⭐ (Only one star)
The only advantage of is that it is cheap (50-100 yuan), but there are too many disadvantages:
- limited coverage (the amplifier itself is not strong signal)
- also 50% off internet speed
- poor stability, hot after long-term operation
- the installation location is particular (if you put it far away, you won't receive the main signal, and it is meaningless if you put it closely)
when can it be used:
- really just make up for blind spots (such as the corner of the bathroom)
- has no requirements for speed at all (WeChat text is fine, video may be stuck)
Horizontal comparison of full coverage schemes
| plan | Coverage Effect | speed | stability | set the difficulty | recommendation index |
| AC + AP (with network cable) | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Mesh Wired Backhaul | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ |
| Mesh Wireless Backhaul | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐ | ⭐⭐⭐ |
| Wireless Relay | ⭐⭐⭐ | ⭐⭐ | ⭐⭐ | ⭐ | ⭐ |
| Signal Amplifier | ⭐⭐ | ⭐ | ⭐ | ⭐ | ⭐ |
Mesh Setup FAQs
Q: Do Mesh nodes need to be of the same brand as the primary route?
A: Yes, most Mesh systems require the same brand and support the Mesh protocol. However, ASUS's AiMesh is more open and can be mixed and matched with some ASUS models.
Q: How many Mesh units can I buy in a three-bedroom living room?
A: 2 units are recommended. One is placed in the living room, and the other is placed in the master bedroom or in the middle of the hallway. Don't buy 3 units and stuff them into a 90㎡ house, the signals will interfere with each other.
Q: Which is better Mesh or Power Cat?
A: Mesh wins. The power cat is transmitted through wires, which is greatly affected by the quality of wires, and the quality of wires in newly renovated houses is uneven and the speed is unstable. Mesh wireless backhaul is not good and is more stable than electric cats.
Q: Does Mesh support 1000M broadband?
A: WiFi 6 Mesh nodes are supported, but note:
- wireless backhaul between nodes will take half of the bandwidth, and two devices may run less than gigabit at the same time
- computer can run a gigabit of power directly connected to the master node with a network cable
- want to run a gigabit whole house, you need to have a wired backhaul or a 2.5G network port for each node
final reminder
- Mesh is preferred for 120㎡ and above, with the best wired return experience
- A single router below 80 square meters is enough for , and the channel interference should be troubleshooted first
- Mesh The more nodes are not better, two units are not enough to buy a third one
- can be wired, choose AC + AP, which is the most stable in one step
- wireless repeaters and signal amplifiers are carefully selected , and the 50% speed is no joke
WiFi The essence of coverage is "to get the signal to where you use it". Mesh sends the signal to every corner, and the wireless relay simply amplifies the decayed signal again, with a very different effect.
How old is your family? How many routers are you using now? The comment area will talk about the specific situation to help you decide whether you need to use Mesh.
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