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srsLTE
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after RLF store PCI of current serving cell 

the PCI is needed for the reestablishment request in case
the new serving cell has changed
This commit is contained in:
Andre Puschmann 2019-10-17 16:01:59 +02:00
parent c1da02cd07
commit c24b25f42e
2 changed files with 9 additions and 2 deletions
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1
srsue/hdr/stack/rrc/rrc.h
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@ -468,6 +468,7 @@ private:
bool initiated = false;
asn1::rrc::reest_cause_e m_reest_cause = asn1::rrc::reest_cause_e::nulltype;
uint16_t m_reest_rnti = 0;
uint16_t m_reest_source_pci = 0;
bool reestablishment_started = false;
bool reestablishment_successful = false;

10
srsue/src/stack/rrc/rrc.cc
View File

@ -880,6 +880,11 @@ void rrc::send_con_restablish_request()
crnti = ho_src_rnti;
pci = ho_src_cell.get_pci();
cellid = ho_src_cell.get_cell_id();
} else if (cause == asn1::rrc::reest_cause_e::other_fail) {
// use source PCI after RLF
crnti = m_reest_rnti;
pci = m_reest_source_pci;
cellid = serving_cell->get_cell_id();
} else {
crnti = m_reest_rnti;
pci = serving_cell->get_pci();
@ -887,8 +892,7 @@ void rrc::send_con_restablish_request()
}
// Compute shortMAC-I
uint8_t varShortMAC_packed[16];
bzero(varShortMAC_packed, 16);
uint8_t varShortMAC_packed[16] = {};
asn1::bit_ref bref(varShortMAC_packed, sizeof(varShortMAC_packed));
// ASN.1 encode VarShortMAC-Input
@ -1347,6 +1351,8 @@ void rrc::init_con_restablish_request(asn1::rrc::reest_cause_e cause)
// Save reestablishment cause and current C-RNTI
m_reest_rnti = uernti.crnti;
m_reest_cause = cause;
m_reest_source_pci = serving_cell->get_pci(); // needed for reestablishment with another cell
reestablishment_started = false;
// initiation of reestablishment procedure as indicates in 3GPP 36.331 Section 5.3.7.2