User Manual

Table Of Contents
Chapter 4 - Operation and Administration ASN-GW Menu
BreezeMAX Extreme 111 System Manual
the previously detected coded block and fed to the input of the FEC decoder.
Combining the two or more received versions of the code block improves the
chances of correctly decoding.
The WiMAX standard supports this by combining an N-channel stop and wait
ARQ along with a variety of supported FEC codes. Doing multiple parallel
channels of HARQ at a time can improve the throughput, since when one HARQ
process is waiting for an acknowledgment, another process can use the channel to
send some more data. WiMAX supports signaling mechanisms to allow
asynchronous operation of HARQ and supports a dedicated acknowledgment
channel in the uplink for ACK/NACK signaling. Asynchronous operations allow
variable delay between retransmissions, which provides greater flexibility for the
scheduler.
In the current release HARQ is not configurable: It is enabled by default for Data,
PPPoE and Management Services Profiles (4 repetitions) and disabled (1
repetitions) for VoIP Service Profiles.
4.6.2.4 QoS Profiles
The QoS Profile submenu option for a selected Service Profile enables managing
the QoS Profiles assigned to the Service Profile. At least one QoS Profile must be
assigned to each Service Profile, up to a maximum of four QoS Profiles per Service
Profile.
Each QoS Profile includes the following components:
QoS Profile ID
Uplink QoS Type
Uplink CP
Uplink QoS Parameter(s) - according to Uplink QoS Type
Downlink QoS Type
Downlink CP
NOTE
In the current release only BE and NRT QoS Types are supported. For BE QoS Profiles only a a
value of 0 is supported for the CP parameters. For NRT QoS Profiles only values of 1 or 2 are
supported for the CP parameter.