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a4e8c10a38
The TODO file hasn't seen any updates sicne 2014, while the code has evolved. I'm not sure about some of the topics, but at least several can for sure be removed by now Change-Id: I56581c9b2a08edb1b6d4dc53ad9eb6fdd1800a0d
35 lines
1.4 KiB
Plaintext
35 lines
1.4 KiB
Plaintext
* Change functions with 100 parameters to get a struct as param
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* Move move into the TBF class
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* tbf/llc window code appears to be duplicated and nested in other
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methods. This needs to be cleaned.
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* Possible race condition:
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When scheduling a Downlink Assignment on the UL-TBF we need to make
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sure that the assignment is sent _before_ the final ack. With my fairness
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changes it gets more likely that this event is trigerred.
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* Optimize:
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After receiving an ACK/NACK.. schedule another one if the window
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is kind of stalled anyway. This way we avoid resending frames that
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might have already arrived. It could increase the throughput..
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Do not re-transmit after we got ack/nacked and where in the resending
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mode... and increase the window.
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<0004> tbf.cpp:907 - Sending new block at BSN 111
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...
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tbf.cpp:858 - Restarting at BSN 48, because all window is stalled.
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...
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tbf.cpp:1383 - V(B): (V(A)=59)"NNAAAAAAANAAAAANNAAAAAAAAAAAAAAAAAAAXXXXXXXXXXXXXXXXX"(V(S)-1=111) A=Acked N=Nacked U=Unacked X=Resend-Unacked I=Invalid
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.. retransmitting the nacked.. and then the ones that migh have
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already arrived
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<0004> tbf.cpp:834 TBF(TFI=0 TLLI=0xd7b78810 DIR=DL) downlink (V(A)==59 .. V(S)==112)
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<0004> tbf.cpp:840 - Resending BSN 111
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Figure out scheduling issue. Why do we reach the 20 re-transmits and
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stil haven't received the ACK/NACK? was it scheduled? The whole
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scheduler could be re-worked to be more determestic.. and answer
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questions like if it has been sent or not
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