Cisco Systems 1600 Network Router User Manual

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CiscoAironetAccessPointDeploymentGuide 

CiscoSystems

Page44of52

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Note:Inordertobeamformtoclientsusingthreespatialstreams,sincethreetransmittersare

used in the transmissions, the AP needs at least one additional radio to beamform. The AP

3600hasfourradiosperbandandcanbeamformtoclientsusingthreespatialstreams.



To summarize, ClientLink

2.0 takes the received signals heard from the client on the uplink and

calculates howthe multipathsignal lookedfrom thosestreams.Then,on thereciprocal side(transmit

downlink),ClientLink2.0usesallfourradiostofigureouttheoptimalwaytoformthesignal(transmit

beamforming) toenable  the client

 tobest decode(receive the signal on the downlink) with theleast

amountofretries.



ClientLink2.0with anAP3 600enablesbeamformingtoall802.11nclients,including3SSclients,andcan

dosoforupto128clientsatatime.TheAP 1600supportsfewerclients(32)and

doesnotsupport3SS.

ClientLink 1.0 supported a maximum of 15 clients at a time. ClientLink 2.0 significantly improves

throughputandcoverage upto60% onthedownlink sideformuchbetter 802.11nclient connectivity

andforenhancingtheBringYourOwnDevice(BYOD)experience.



FormoreinformationonCiscoClientLink

2.0,refertothefollowingURL:



http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps11983/at_a_glance_c45‐691984.pdf

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SiteSurveyConsiderations

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WhileClientLink dynamically beamformsand helpsto maintaina robustsignal, whichresults infewer

retries,itwasnotdesignedtochange thecellrange.ClientLinkcreates abetterconnectionexperience,

notalargercellsize.

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For this reason, during a site survey, it is important to keep in mind

that the AP 3600 cell sizes are

generallythesameorverysimilartootherCiscoaccesspoints.Figure58depictstypicalrangesinthe1‐

54 Mbps range. While Cisco always  recommends that you survey with the equipment you intend to

deploy, an earlier survey done with an AP 3500,

 for example,  would not be invalid for an AP 3600

deployment. Figures 59 and 60 provide examples of the modulation types and signal‐to‐noise ratio

(SNR).



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Cisco Systems 1600 Network Router User Manual