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Re: [STDS-802-16] UL,DL services

Vasanth:

Two things to remember:

1) UGS,rtps,nrtps,BE service class apply to the uplink only, not DL.
2) Within each of these service classes, one may still assign different service flow QoS attributes and different priorities.

Per the above, you can see why it makes sense to have separate service flows for the UL and DL. This doesn't preclude an implementation where UL and DL service flow attributes are similar or even the same.

Peretz Feder

"Vasanth.Rajan" wrote:

Hi all, Thanks for the prompt reply from the groups abt service flow,but still I have something to clear regarding this, I will list it below. a. Each service class defines a set of Qos parameters that can be associated with service flow.In 802.16 we have 4 std service class(UGS,rtps,nrtps,BE).So the BS will set Qos parameter for the above service flow(I am i right?).Separate service flows are required for uplink and downlink traffic, where each service flow is assigned a unique service level category and separate QoS settings.My question is why seperate service flows are required for uplink and downlink??(ie for same service class why we require seperate service flow for UL & DL) . If possible plz explain me with a practical example. Thanks in advanceVasanth