pcu: Wait for USF before start using UL TBF
Change-Id: Ibe8f8c24b239715c0a43d52e59475011e78cb4eb
diff --git a/pcu/GPRS_Components.ttcn b/pcu/GPRS_Components.ttcn
index a3e8c94..59c99d8 100644
--- a/pcu/GPRS_Components.ttcn
+++ b/pcu/GPRS_Components.ttcn
@@ -992,6 +992,36 @@
return;
}
+/* Keep receiving & discarding DL blocks until the PCU requests USF for this MS */
+function f_ms_wait_usf(inout GprsMS ms, template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum)
+runs on MS_BTS_IFACE_CT return uint32_t {
+ var BTS_PDTCH_Block data_msg;
+
+ BTS.send(ts_PCUIF_RTS_REQ(nr.bts_nr, nr.trx_nr, nr.ts_nr,
+ sapi := PCU_IF_SAPI_PDTCH, fn := 0,
+ arfcn := f_trxnr2arfcn(valueof(nr.trx_nr)),
+ block_nr := nr.blk_nr));
+ alt {
+ [] as_pcuif_rx_ignore_empty(nr);
+ [] BTS.receive(tr_PCUIF_DATA_PDTCH(nr.bts_nr,
+ tr_PCUIF_DATA(nr.trx_nr, nr.ts_nr, sapi := PCU_IF_SAPI_PDTCH),
+ ?)) -> value data_msg {
+ var uint3_t rx_usf := f_rlcmac_dl_block_get_usf(data_msg.dl_block);
+ var uint3_t exp_usf := ms.ul_tbf.usf[valueof(nr.ts_nr)];
+ log("Rx DL block USF ", rx_usf, " vs exp USF ", exp_usf);
+ if (rx_usf != exp_usf) {
+ BTS.send(ts_PCUIF_RTS_REQ(nr.bts_nr, nr.trx_nr, nr.ts_nr,
+ sapi := PCU_IF_SAPI_PDTCH, fn := 0,
+ arfcn := f_trxnr2arfcn(valueof(nr.trx_nr)),
+ block_nr := nr.blk_nr));
+ repeat;
+ }
+ }
+ };
+
+ return data_msg.raw.fn;
+}
+
////////////////////////
// Low level APIs
////////////////////////