Dl TBF: Get rid of LLC UI dummy blocks following other data
According to:
* 3GPP TS 44.060 version 16.0.0 "9.3.1a Delayed release of downlink Temporary Block Flow"
* 3GPP TS 44.064 version 16.0.0 "6.4.2.2 Unconfirmed Information (UI) Dummy command"
LLC UI Dummy frames are to be used when there no more data to send, only
in order to delay the release of a TBF. Hence, while not incorrect per
se, makes no sense to send those LLC UI Dummy frames inserted into
rlcmac blocks which already contain other LLC frames, since the MS in
that case is already being kept active.
It only makes sense to send those LLC UI Dummy frames when we have
nothing else to send, that is, alone inside a RLCMAC block without other
LLC frames.
Related: OS#4849
Change-Id: Ifae1a7b2b3dfad8df19585063088ba0df2749c8f
diff --git a/src/encoding.h b/src/encoding.h
index 5f8496e..da63a61 100644
--- a/src/encoding.h
+++ b/src/encoding.h
@@ -104,4 +104,7 @@
struct gprs_rlc_data_block_info *rdbi, enum CodingScheme cs,
gprs_llc *llc, int *offset, int *num_chunks,
uint8_t *data, bool is_final, int *count_payload);
+ static void rlc_data_to_dl_append_egprs_li_padding(
+ const struct gprs_rlc_data_block_info *rdbi,
+ int *offset, int *num_chunks, uint8_t *data_block);
};