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Real-Time (RT): The Real-Time polling service is designed to meet
the needs of Real Time Variable Bit Rate like services characterized
by requirements for guaranteed rate and delay such as streaming
video or audio. These services are dynamic in nature, but offer
periodic dedicated requests opportunities to meet real-time
requirements. Because the Subscriber Unit issues explicit requests,
the protocol overhead and latency is increased, but capacity is
granted only according to the real needs of the connection. QoS
Profile parameters include Committed Information Rate (CIR) and
Committed Time (CT).
Non-Real-Time (NRT): Non-Real-Time polling service is very similar
to the Real-Time polling service except that connections may utilize
random access transmit opportunities for sending bandwidth
requests. These Non Real Time Variable Bit Rate services, such as
file transfer and Internet access with a minimum guaranteed rate,
are characterized by requirement for a guaranteed rate, but can
tolerate longer delays and are rather insensitive to jitter. QoS Profile
parameters include Committed Information Rate (CIR), Committed
Time (CT) and Maximum Information Rate (MIR) that limits the rate
so that bandwidth intensive services will not expand to occupy the
full bandwidth.
Best Effort (BE) service is also available for services where neither
throughput nor delay guarantees are provided. The Subscriber Unit
sends requests for bandwidth in either random access slots or
dedicated transmission opportunities. The occurrence of dedicated
opportunities is subject to network load, and the Subscriber Unit
cannot rely on their presence. Service parameters include
Committed Time (CT) and Maximum Information Rate (MIR).
The QoS Profile menu enables defining new QoS Profiles, viewing or
editing details of previously defined QoS Profiles and removing QoS
Profiles from the database.
The configurable QoS Profile's parameters are:
QoS Profile Name
QoS Profile Name can include up to 32 printable characters.
QoS Type
The QoS Type that defines the QoS parameters that are applicable to
the service. The available options are:
1 – CG (Continuous Grant – not supported by current version)
2 – RT (Real Time)
Manual Revision 1.0
Services Menu
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