Airspan AS3010, Руководство по вводу в эксплуатацию

Страница: 572 / 580

E val u at ing L in k Qu al ity C o m m i ssi o n i n g M an u al
28.4. Bit Error Rate (BER)
It is important to measure bit error rate (BER) levels between the BSR and SPR to
ensure that a high quality link exists. Bit error rate is the percentage of bits with
errors divided by the total number of bits that have been transmitted, received or
processed over a given period.
The rate is typically expressed as 10 to the negative
power. For example, four erroneous bits out of 100,000 bits transmitted would be
expressed as 4 x 10
-5
(or 4E-5).
The more bits transmitted, the more accurate the BER measurement. Thus, it is
important to use a third-party tool such as Iperf that generates a flood of UDP
packets.
Note: To measure BER, ensure that a flood of packets between the BSR and
SPR are generated (see Section 28.5, "Generating Traffic to Measure
Throughput").
The BER can be measured locally at the SPR using WipConfig, or it can be
measured remotely using WipManage.
28-10 Airspan Networks Inc. 01040311-07