Cisco Mesh Access Points User Manual

CommentsCisco 1522 (-A Domain)Cisco 1552 (-A Domain)Parameter
13No. of Receive Channels
No MRC
19
MRCRx Diversity
0.5 dB0.5 dBAntenna Cable loss
8 dBi, 14 dBi, 17 dBi3 dual-band
omnidirectional antenna
1552 E/H: 7 dBi each
1552 C/I: 4 dBi each
(3 element low profile
Radom)
Antenna gain without
ClientLink
(Beamforming)
8 dBi (No BF)11 dBi (omnidirectional),
8 dBi panel array
Antenna gain with
ClientLink
(Beamforming)
18
1552 has ~4 dB better Rx sensitivity as compared to 1520 series APs.
19
Maximum Ratio Combining not available for 1522 in 5 GHz.
The 20-MHz channel bonding to form a 40-MHz channel is available in 5 GHz. Therefore, we can go up to
a data rate of 300 Mbps.
As discussed in the previous section, Path Loss Exponents (PLE) and Link Budget windows work together.
For a full clear path, PLE is 2.0. For AP to AP, there is comparatively more clearance than AP to client. For
AP to AP, PLE can be taken as 2.3 because it can be assumed that the height of both APs is about 10 meters,
which means a good line of sight (but without Fresnel zone clearance).
For AP to client, PLE should be greater than or equal to 2.5 because the client is only 1 meter high. Therefore,
there will be less Fresnel zone clearance. This applies to both the 2.4-GHz and 5-GHz bands.
Let us consider AP to AP link budget in 5 GHz for -A domain because 5 GHz is used as a backhaul for mesh.
We can take a legacy data rate of 9 Mbps to estimate the range (see Table 21: AP to AP RF Link Budget, 5.8
GHz: 9 Mbps (-A domain), on page 76).
This is the lowest data rate for outdoor 802.11n APs, which carries the Cisco's ClientLink (Beamforming
for Legacy clients) advantage. It provides a gain of up to 4 dB in the downlink direction.
Note
Table 21: AP to AP RF Link Budget, 5.8 GHz: 9 Mbps (-A domain)
Cisco 1522Cisco 1552 E/HCisco 1552 I/CParameter
28 dBm26 dBm, Composite28 dBm, CompositeTx Power Conducted at 9
Mbps, 20 MHz bandwidth
0.5 dB0.5 dB0 dBTx Antenna Cable Loss
Cisco Mesh Access Points, Design and Deployment Guide, Release 7.3
76 OL-27593-01
Site Preparation and Planning
Cell Planning and Distance

Cisco Mesh Access Points Specifications

General

Brand	Cisco
Model	Mesh Access Points
Category	Wireless Access Point
Language	English