17-03-2014, 02:40 PM
Operating Channel Capability
Purpose:
To verify the device under test (DUT) is capable of operating on all defined channels.
Resource Requirements:
• Vector Signal Analyzer (VSA), Rohde & Schwarz FSQ26 or equivalent
• ERP access point/station with external antenna jack
• Associated ERP AP or station with external antenna jack (optional)
• RF Power Splitter, Picosecond 5333 or equivalent
• Controlling Software (Matlab)
Last updated: June 2007
Discussion:
Reference [1] describes the Extended Rate physical medium dependent (ERP-PMD) sublayer for
the 2.4 GHz band. Section 19.4.2 specifies that ERP devices operate in the frequency ranges
outlined in 18.4.6.2. This subclause specifies center frequencies and channel ids for all supported
regulatory domains in Table 18-9 – High Rate PHY frequency channel plan. As outlined in
Table 18-9, the Federal Communications Commission (FCC) specifies operation in the range
from 2.412 GHz for channel 1 to 2.462GHZ for channel 11 in the United States. This test
verifies whether the DUT is capable of operating on all the channels as per the standard. For the
purposes of this test, the term “operation” is defined as the ability to transmit and receive on each
specified channel and frequency.
Procedure
1. For DUT’s that support continuous transmission, configure the DUT to continuously
transmit PSDUs of length 100 bytes on channel 6 at a data rate of 11 Mbps at maximum
transmit power. Otherwise, for burst mode traffic, configure the DUT to associate and
generate continuous ICMP echo request packets of length 100 bytes, and set the Beacon
Interval to 100 ms.
2. Configure the VSA to capture an entire packet from the DUT. Verify that the DUT is
transmitting properly formed data. Demodulate and decode the frame.
3. Repeat steps 1 & 2 on all defined channels in the FCC regulatory domain.
4. Repeat steps 1-3 for all defined channels in all supported regulatory domains.
Observable Results:
a. For all supported regulatory domains, the DUT should be able to operate on all specified
channels.