Frequency Management and Channel Selection
2-16 Installation
In order to assist with this, recommendations for Smart-hopping channels and SRR
channels based on possible 802.11 b/g WLAN channel deployments in the 2.4 GHz
band are given in the tables that follow.
2.4 GHz Smart-hopping Channel Selection
A minimum of three Smart-hopping channels is required for operation of the
system, but Philips strongly recommends selecting the maximum of six channels in
order to improve performance.
For example, if a 2.4GHz Smart-hopping network is being deployed without the
short-range radio in a hospital with an 802.11 deployment of channels 1, 6 and 11,
the best Smart-hopping channels to use would be the channels listed as "Primary"
in the table, "802.11 b/g Channel Deployment 1, 6, 11", under "Option 1". This
would be Smart-hopping channels 13, 14, 28, 42, 43, 44, 45, 46, 47. The best six of
these Smart-hopping channels across the whole coverage area should be selected.
A clear Smart-hopping channel is defined as having a power level of < -90dBm.
Using the diagram below to illustrate, Smart-hopping channels 13 and 14 operate
between 802.11 channels 1 and 6, Smart-hopping channel 28 operates between
802.11 channels 6 and 11 and Smart-hopping channels 42, 43, 44, 45, 46 and 47
operate above 802.11 channel 11, thus minimizing interference with the WLAN that
is deployed.
865351 - Short-range Radio (SRR) Channel Selection
SRR with Cableless Measurements (Telemetry Use Model) – The SRR channels
are configured in the Information Center. Configure 2-4 channels as "High" and
the rest "Off". The MX40 will select the best channel to use from those channels
configured as "High".
SRR with IntelliVue monitor (Bedside Use Model – WTAAP) – One SRR channel
is configured in the bedside monitor. This is the channel the bedside will use to
communicate with the MX40 and any Cableless Measurement pods. Select the
best channel based on the interference level at the location where the bedside will
be used.
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