Version 1.1, 09/2020. Copyright 2012 Hitron Technologies
78
Version 1.1, 09/2020. Copyright 2020 Hitron Technologies
78
Hitron CODA-551x User’s Guide
5.1.3.3 Dynamic Channel Change
Dynamic Channel Change (DCC) improves strength and continuity of wireless signal
even when environmental conditions change, by enabling Automatic Channel
Selection (see
Automatic Channel Selection on page 77) to be triggered when the
current channel’s interference reduces the data transmission rate below a threshold
level.
NOTE: At the time of writing, the data transmission threshold level is 150Mbps; this
is the bandwidth required to simultaneously transmit four high-definition video
streams to the CODA-551x’s wireless clients.
When DCC is enabled, a check of all available wireless channels is performed
regularly. If the signal quality of the current channel deteriorates below the threshold
level, the CODA-551x switches to a channel with superior signal quality.
NOTE: At the time of writing, the DCC check is performed sixty times a minute.
When environmental conditions mean there is no available channel with acceptable
signal quality, DCC is automatically disabled if channel switching occurs too often in
any period, in order to avoid the inconvenience of rapid unnecessary switching.
NOTE: At the time of writing, DCC is automatically disabled if automatic channel
switching occurs more than three times in any five minute period.
NOTE: At the time of writing, DCC is only available on the 5GHz wireless network.
5.1.4 Wireless Standards
The way in which wireless devices communicate with one another is standardized by
the Institute of Electrical and Electronics Engineers (IEEE). The IEEE standards
pertaining to wireless LANs are identified by their 802.11 designation. There are a
variety of WLAN standards, but the CODA-551x supports the following (in order of
adoption - old to new - and data transfer speeds - low to high):
IEEE 802.11g
IEEE 802.11n
IEEE 802.11ac
IEEE 802.11ax
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