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Traffic flow template at PGW

+1 vote
365 views

Few doubts about TFT -
1. What is the role of TFT in LTE is it just limited at PGW or more then that.
2. How this is applied at PGW.

posted Aug 16, 2013 by anonymous

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Traffic flow template is always associated with dedicated bearer and while default bearer may or may not have TFT. Dedicated bearer provides QoS to special service or application and TFT defines rules so that UE and Network knows which IP packet should be sent on particular dedicated bearer. It usually has rules on the basis of IP packet destination/source or protocol used.

1 Answer

–1 vote
answer Aug 17, 2013 by Chandra Javalkar
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+2 votes

Hi all

Downlink TFTs is used just for P-GW to decide which bearer that packet should go.
It is not useful for UE (or i miss something?)

Therefore, why PGW sends Downlink TFTs to UE?

thanks

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Find the answer. The answer is include in comment.

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+1 vote

I am looking for uplink/downlink packet structure at PGW as well as eNB.

+2 votes

I am looking for some inputs regarding the way to restrict the BW at PGW to be within the authorized one.

I read some articles, the P-GW will use the Subscribed APN-AMBR value to limit the IP data traffic to a maximum rate.

Now my query is how the PGW derives this info? (Is it uses the windowing to check the num of packets in certain period or is it at a particular time?)


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