Brocade Mobility RFS7000-GR Controller System Reference Guide (Supporting software release 4.1.0.0-040GR and later) - Manual (Page 203)

Brocade Mobility RFS7000-GR Controller System Reference Guide 189
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4
Smart RF
When invoked by an administrator, Smart RF (or self-monitoring at run time) instructs radios to
change to a specific channel and begin beaconing using their maximum available transmit power.
Within a well planned deployment, any associated radio should be reachable by at least one other
radio. The Smart RF feature records signals received from its neighbors as well as signals from
external, un-managed radios. AP to AP distance is recorded in terms of signal attenuation. The
information from external radios is used during channel assignment to minimize interference.
Smart RF management is comprised of the following two phases:
• Smart RF calibration phase
• Smart RF monitoring phase
Smart RF is well suited for clustered environments. Smart RF interacts with a number of existing
features, (such as radio detection, MU load balancing and self-healing).
Smart RF calibration phase
Smart RF calibration is initiated by an administrator during initial deployment or can be scheduled
at a specified frequency or time of the day. Smart RF instructs adopted radios to scan legal
channels and measure signal strength from associated radio and other device signals detected
within the environment.
Smart RF conducts the following network management activities:
• Automatically calibrates associated radio's maximum power capability
• Automatically assigns certain radios to be detectors
• Automatically assign channels to radios to avoid channel overlap and interference from
external RF sources
• Automatically calculates the transmit power of working radios
• Automatically configures self-healing parameters. Radio assume the roles of caretaker and
caregiver. When a radio is down, it is referred to as the caretaker. Neighbor radios raising their
transmit power to cover for the failed radio are referred to as caregivers. Smart RF calibration
automatically chooses caregiver radios along with the power needed to cover.
Smart RF monitoring phase
Smart RF monitoring occurs continuously. It includes the following monitoring activities:
• Self-healing to monitor whether a radio is down
• Interference monitoring using retry stats
• Defines coverage holes and discerns transmit rates and MU signal strength. When necessary,
Smart RF increases MU power to maintain coverage
• Extensible to future smart-tuning. For example, distinguish between AP to AP interference and
static interference
Viewing Smart RF information
To view Smart RF information: