Physical Layer Features - Motorola RFS7000 Series System Reference Manual

1-12 Overview
The switch can be discovered using one of the following mechanisms:
• DHCP
• Switch fully qualified domain name (FQDN)
• Static IP addresses
The benefits of an AAP deployment include:
• Centralized Configuration Management & Compliance - Wireless configurations across distributed
sites can be centrally managed by the wireless switch or cluster.
• WAN Survivability - Local WLAN services at a remote sites are unaffected in the case of a WAN
outage.
• Securely extend corporate WLAN's to stores for corporate visitors - Small home or office deployments
can utilize the feature set of a corporate WLAN from their remote location.
• Maintain local WLAN's for in store applications - WLANs created and supported locally can be
concurrently supported with your existing infrastructure.
For an overview of AAP and how it is configured and deployed using the switch and access point, see
B.1 Adaptive AP Overview.

1.2.2.2 Physical Layer Features

802.11a
• DFS Radar Avoidance – Dynamic Frequency Selection (DFS) functionality is mandatory for WLAN
equipment intended to operate in the frequency bands 5150 MHz to 5350 MHz and 5470 MHz to 5725
MHz when the equipment operates in the countries of EU. The purpose of DFS is:
• Detect interference from other systems and avoid co-channeling with those systems, most
notably radar systems.
• Provide uniform loading of the spectrum across all devices.
This feature is enabled automatically when the country code indicates DFS is required for at least one
of the frequency bands that are allowed in the country.
• TPC – Transmit Power Control (TPC) meets the regulatory requirement for maximum power and
mitigation for each channel. The TPC functionality is enabled automatically for every AP that operates
on the channel.
802.11bg
• Dual mode b/g protection – The ERP builds on the payload data rates of 1 and 2 Mbit/s that use DSSS
modulation and builds on the payload data rates of 1, 2, 5.5, and 11 Mbit/s, that use DSSS, CCK, and
optional PBCC modulations. ERP provides additional payload data rates of 6, 9, 12, 18, 24, 36, 48, and
54 Mbit/s. Of these rates, transmission and reception capability for 1, 2, 5.5, 11, 6, 12, and
24 Mbit/s data rates is mandatory.
Two additional optional ERP-PBCC modulation modes with payload data rates of 22 and 33 Mbit/s are
defined. An ERP-PBCC station may implement 22 Mbit/s alone or 22 and 33 Mbit/s. An optional
modulation mode known as DSSS-OFDM is also incorporated with payload data rates of 6, 9, 12, 18,
24, 36, 48, and 54 Mbit/s.
• Short slot protection – The slot time is 20 µs, except an optional 9 µs slot time may be used when the
BSS consists of only ERP STAs capable of supporting this option. The optional 9 µs slot time should
not be used if the network has one or more non-ERP STAs associated. For IBSS, the Short Slot Time
field is set to 0, corresponding to a 20 µs slot time.