MR-2401 changed the argument to the init_nrUE_standalone_thread
to be zero instead of the ue_id_g. This causes every port to be
opened for multiple UEs to have the same value, therefore only
allowing one UE to be connected to the proxy. If the ue_id_g
global is an issue, we should open a new ticket for a proper fix.
remove several unused files
remove mem_block_t that is never used in a different way than a simple heap buffer
move up IP address type and remove duplications of the same struct declaration
When the gNB does not receive PUCCH with Ack for Msg4 we have to consider Msg4 received by the UE, so we need to apply the CellGroupConfig sent to the UE.
There are two scenarios:
1 - The UE never decoded PDSCH for Msg4, the RA will fail because RA Contention Resolution timer, the UE will come with a new RA with new RRCSetupRequest
2 - The UE decoded PDSCH for Msg4, and if SR does not work and no resources for PUSCH, it will trigger RA with MAC CE C-RNTI in Msg3 (so, gNB must be ready for it)
The CellGroup is created considering UID, for example:
'pucchres0->startingPRB = 8 + uid;' and since we keep the CellGroup from
the previous RNTI/UID we should keep also the previous UID.
Considering the scenario where a UE did successful RRCReestablishment,
it was getting uid = 1, and uid = 0 was removed.
When another UE connected, it was getting UID = 0 (because 0 was already
free), and so the PUCCH 0 resource was conflicting with the first UE.
On that occasion, also correct the comment that describes the code, as
it was wrong/misleading.
Position of SSB from Point A depends on offsetToPointA and Kssb, and for both, the unit for RB is expressed as 15KHz for FR1 and 60 KHz for FR2, so scaling must be 4 for FR2 frequencies
- Implement: Extend the F1 encoding and decoding with Qos
- Implement: E1 decoding for QoS
- Fix: Modify the UE_MODIFICATION_REQUEST_MSG towards DU to contain QoS info based on E1AP context response
- Fix: Modify the E1AP and F1AP message structures
- Fill the Qos configuration to send to MAC
The macrlc_has_f1 (static) variable was introduced to signal when we use
F1 in the configuration. It is superfluous: the node_type already passes
this information in a unique manner; hence, remove.
Correctly match UEs based on the NSSAI in MAC and RRC. There is a
convenience function capture_sst_sd() that extracts SST and SD (which
form the NSSAI). Because a previous version used integers to convey the
slice identifier, this function gracefully handles this case, although
it is not spec-compliant.
Prior to this commit, the RAN function for KPM is leaking memory: it
allocates using calloc() but never frees it.
The fix consists of not allocating this memory on the heap in the first
place, but on the stack. Therefore, there are changes to pass in a
pointer to various functions to the structure on the stack, instead of
passing the "container" for the heap memory by value.
Further, the MAC was allocating an excessive amount of memory (N times
sizeof(NR_UE_info_t)). Instead of copying the entire struct, the present
code stores a pointer to the MAC UE container (NR_UE_info_t *). For the
RRC, there is a similar simplification that consists in not storing the
entire struct f1_ue_data_t (which is not required), but only the RRC UE
ID.
Note that both MAC and RRC might suffer from race conditions. For the
MAC, we should lock the scheduler for the time we read statistics. For
the RRC, the problem is more delicate as no mutex exists; the RRC
assumes everything is executed synchronously in the ITTI task loop. In
both cases, this commit does not address this problem
Filtering UEs by NSSAI is broken, so remove it. A later commit will
reestablish this functionality.
Simplify the code: we only handle one condition, so we can check for it
upfront.
Robert Schmidt