Cisco Mesh Access Points Deployment Manual page 90

Cell Planning and Distance
AP to client distance is recommended. That is, if we halve the AP to AP distance, we will get the approximate
cell radius.
The AP1550 series offers comparatively better range and capacity as it has the 802.11n functionality. It has
advantages of ClientLink (Beamforming) in downstream, better receiver sensitivities because of MRC in
upstream, multiple transmitter streams and a few other advantages of 802.11n such as channel combining and
so on. The 1552 access points can provide comparatively larger and higher capacity cells.
Note Link budgets are different for different country domains. The discussion in this section takes into account
the most widely distributed and large country domains: -A and -E.
Comparison of Link Budgets of AP1520 Series and AP1552 Series in 2.4- and 5-GHz Bands (-A Domain)
For the 2.4-GHz band 1520s and 1552s have almost the same Tx power, but 1552s have 3 dB better Rx
sensitivity because of improved MRC (see
Domain, on page
Table 19: Link Budget Comparison for the 2.4-GHz band in -A Domain
Parameter
Frequency Band
Air Interface
Channel Bandwidth
No. of Tx Spatial Streams
PHY Data Rates
Tx Power Conducted
Rx Sensitivity
No. of Receive Channels
Rx Diversity
Antenna Cable loss
Cisco Mesh Access Points, Design and Deployment Guide, Release 7.3
74
Table 19: Link Budget Comparison for the 2.4-GHz band in -A
74).
Cisco 1552 (-A domain)
2412-2462 MHz
802.11b/g/n
20 MHz
2
15
Up to 144 Mbps
28 dBm, Composite
–94 dBm at 6 Mbps
–79 dBm at 54 Mbps
–73 dBm at 300 Mbps
3
MRC
0.5 dB, with external
antenna
Cisco 1522 (-A Domain)
2412-2462 MHz
802.11b/g
20 MHz
1
Up to 54 Mbps
16
27 dBm
–90 dBm at 6 Mbps
–80 dBm at 54 Mbps
17
3
MRC
0.5 dB
Site Preparation and Planning
Comments
Center Frequencies
Maximum power, data
rate dependent
Includes 4.7 dB MRC
gain for AP1552
OL-27593-01