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120 Commits (fcf481b83e32ee6c18d7938f1c0bacdc106bd07d)

Author SHA1 Message Date
Pedro Alvarez 0c20b7a455 Added support for S1AP modify bearer request support. This includes: 
- Handle received E-RAB S1AP at s1ap.cc.
 - Added methods to rrc.cc, rrc_ue.cc and rrc_bearer_cfg.cc to handle erab modify request.
 - Made RLC add_bearer() function capable of re-creating the RLC entity.
 - Send RRC reconfiguration to the UE and reply to the EPC with S1AP
   modify bearer response.

This commit also adds support to srsEPC to send S1AP modify bearer request for
testing purposes.
 4 years ago
Ismael Gomez f9a02299f9 Use MAC PDU pointer instead of tti_rx and rnti as a key to associate buffers. Decouple crc_info() and push_pdu() functions. This allows for different timing architectures in the PHY 4 years ago
Pedro Alvarez 7eebd71627 Added S1AP E-RAB release command/response handling to srsENB. 
Added the ability to srsEPC to send the E-RAB release command.
 4 years ago
Andre Puschmann 07d2bc4fe8 change license header to agnostic version with hint to root LICENSE file 4 years ago
Francisco 7a74bf28d1 forward declare s1ap types in enb interfaces 4 years ago
Francisco 66712023bb remove unneeded includes of full rrc asn1 lib 4 years ago
Francisco 68eda336bd remove ENB_METRICS_MAX_USERS compile time macro and use run-time variable to set maximum number of UEs the srseNB can have connected at a given instant. 4 years ago
yagoda bdc1964335 consolidating RRC eMBMS configuration into single function, setting some parameters to const 4 years ago
yagoda b90574975b refactoring asn1 eMBMS code, removing asn1 from PHY and MAC in eNodeB 4 years ago
Francisco Paisana 510959b50f update nr asn1 files, and asn1 tests 4 years ago
Francisco Paisana 137e554eb3 reestablish pdcp bearers is required in case of AM bearers 4 years ago
Francisco Paisana bb5dd92dca implemented s1 handover cancellation procedure to force the target enb to release the ue ctxt 4 years ago
Francisco Paisana 8c9e596f89 refactored s1ap handover request interface. cleaned up rrc tenb s1 handover code 4 years ago
Francisco Paisana 5d1343fe75 implemented S1 bearer status transfer 4 years ago
Francisco Paisana db8af399f8 extended rrc tenb s1 handover test. implemented layer reconfig during s1 handover 4 years ago
Francisco Paisana 7605c7df23 added s1ap handover notification, fixed s1ap asn1 bug, and fixed bad fields for admitted erabs in ho req ack 4 years ago
Francisco Paisana 26f46ea067 add S1 Handover Request handling in target eNB 4 years ago
Ismael Gomez 382811e10e
Update S1AP RNTI context when doing Reestablishment (#1582) 4 years ago
Ismael Gomez dda91b14f7 Remove duplicate add_rnti() function since already done in set_config 4 years ago
Andre Puschmann a7911f0dab pdcp,rlc: refactor SDU queueing policy 
this patch refactors the SDU queuing and dropping policy of the RLC and PDCP layer.
the previous design had issues when packets have been generated at a higher
rate above the PDCP than they could be consumed below the RLC.

When the RLC SDU queues were full, we allowed two policies, one to block on the write
and the other to drop the SDU. Both options are not ideal because they either
lead to a blocking stack thread or to lost PDCP PDUs.

To avoid this, this patch makes the following changes:

* PDCP monitors RLC's SDU queue and drops packets on its north-bound SAP if queues are full
  * a new method sdu_queue_is_full() has been added to the RLC interface for PDCP
* remove blocking write from pdcp and rlc write_sdu() interface
  * all writes into queues need to be non-blocking
  * if Tx queues are overflowing, SDUs are dropped above PDCP, not RLC
* log warning if RLC still needs to drop SDUs
  * this case should be avoided with the monitoring mechanism
 4 years ago
Francisco Paisana 5e06430455 removal of stack handler interface 4 years ago
Ismael Gomez 493b7ea2da Remove SNR threshold based link failure detection 4 years ago
Francisco Paisana 42969ad992 add tb size as argument to gnb 4 years ago
Pedro Alvarez 9c1a7d2cf1 Removed get_bearer_status in PDCP. Renamed get_state/set_state to 
get_bearer_state/set_bearer_state.
 4 years ago
Pedro Alvarez 66d4f320e5 Added intereface to set PDCP state after reestablishment. 4 years ago
Pedro Alvarez 33567d81db Added interface to get internal PDCP state. 4 years ago
Ismael Gomez 60b5fb9a74 Refactor variable name 4 years ago
Pedro Alvarez 960c0e97cd Added handling of RRC re-establishment to srsENB. 
* Added the appropriate code for handling and sending the
   re-establishment procedure messages to rrc_ue.c/.h.
 * Triggered RRC reconfiguration after the reception of RRC
   re-establishment complete
 * Refreshed K_eNB at the reception of re-establishment
   request
 * Changed the mapping of TEIDs to RNTIs in the GTP-U layer,
   as the RNTI might change with reestablishment.
 4 years ago
Francisco Paisana 026628a84f use of reestablishment method to reset the RLC bearers during handover 5 years ago
Ismael Gomez 270c7ce9dc Separate PHY interface to add rnti and pregenerate sequences. Calculate the sequences on the reception of ConnectionSetup instead of PRACH 5 years ago
Andre Puschmann 8756d14660 enb_interface: add default initialize to zero 5 years ago
Xavier Arteaga 9d5c2d70df SRSENB: Fix PHY reconfiguration for HO 
Minimal aesthetic change
 5 years ago
Francisco Paisana e8aff22e1b using new rrc obj id util methods in handover code 5 years ago
Francisco Paisana f43985b6cd small updates for testing handover and configuring the rrc 5 years ago
Xavier Arteaga d7e7399e7b srsENB: PHY configuration in two stages 5 years ago
Xavier Arteaga b9583d4182 Fix Extended CSI request bits in DCI 5 years ago
Xavier Arteaga 77d5dedddc Fix LGTM warnings and recommendations 5 years ago
Francisco Paisana 5db2c62530 comments for handover commands 5 years ago
Francisco Paisana 7a132f9ccd more enb interface comments 5 years ago
Francisco Paisana 0526ae8ab1 updated rrc mobility parsing. added some utility methods 5 years ago
Francisco Paisana 64557740fc use mac_buffer_state interface to schedule CEs in scheduler 5 years ago
Francisco Paisana d183d64409 added allocate_rnti method to mac. Useful both during PRACH and handover UE resource allocation 5 years ago
Francisco Paisana 28467d568d eliminated old way to schedule tasks using the heap 5 years ago
Francisco Paisana a2ade9edd1 break down rrc_interface_types.h into multiple files. moved pdcp_config.h to same folder 5 years ago
Francisco Paisana 30ae2226c1 common interface for stack multiqueue tasks, background tasks and timers 5 years ago
Xavier Arteaga e832769ae6 Updated copyright 5 years ago
Xavier Arteaga 5af89513eb use double precission for frequency in srsue and srsenb 5 years ago
Francisco Paisana 7548402632 change scell activation interface to use arrays. Added a method to the scheduler to get the current set of activated carriers 5 years ago
Andre Puschmann a8acd235f6 extend eNB MAC to support multiple CC per UE 
- add tx/rx softbuffers for each CC that a UE might have
- make sure to call assign correct buffers when iterating
  over the CC for UL/DL grant assignment
 5 years ago
Pedro Alvarez 96c82b3fc6 Moved PDCP configs to pdcp_config.h. Added `as_security_cfg_t` structure to hold access stratum keys. 
Refactored PDCP, RRC and USIM accordingly.
 5 years ago