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Change Log for Releases
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## 20.04
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* Carrier Aggregation and Time Alignment in srsENB
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* Complete Sidelink PHY layer (all transmission modes)
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* Complete NB-IoT PHY downlink signals
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* New S1AP packing/unpacking library
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* EVM and EPRE measurements
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* Remove system timers in srsUE and srsENB
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* Refactor eNB to prepare for mobility support
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* Other bug-fixes and improved stability and performance in all parts
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## 19.12
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* Add 5G NR RRC and NGAP ASN1 packing/unpacking
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* Add sync routines and broadcast channel for Sidelink
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* Add cell search and MIB decoder for NB-IoT
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* Add PDCP discard
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* Improve RRC Reestablishment handling
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* Improve RRC cell measurements and procedure handling
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* Add multi-carrier and MIMO support to ZMQ radio
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* Refactor eNB scheduler to support multiple carriers
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* Apply clang-format style on entire code base
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* Other bug-fixes and improved stability and performance in all parts
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## 19.09
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* Add initial support for NR in MAC/RLC/PDCP
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* Add sync code for NB-IoT
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* Add support for EIA3/EEA3 (i.e. ZUC)
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* Add support for CSFB in srsENB
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* Add adaptation layer to run TTCN-3 conformance tests for srsUE
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* Add High Speed Train model to channel simulator
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* Rework RRC and NAS layer and make them non-blocking
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* Fixes in ZMQ, bladeRF and Soapy RF modules
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* Other bug-fixes and improved stability and performance in all parts
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## 19.06
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* Add QAM256 support in srsUE
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* Add QoS support in srsUE
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* Add UL channel emulator
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* Refactor UE and eNB architecture
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* Many bug-fixes and improved stability and performance in all parts
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## 19.03
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* PHY library refactor
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* TDD support for srsUE
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* Carrier Aggregation support for srsUE
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* Paging support for srsENB and srsEPC
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* User-plane encryption for srsENB
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* Channel simulator for EPA, EVA, and ETU 3GPP channels
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* ZeroMQ-based fake RF driver for I/Q over IPC/network
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* Many bug-fixes and improved stability and performance in all parts
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## 18.12
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* Add new RRC ASN1 message pack/unpack library
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* Refactor EPC and add encryption support
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* Add IPv6 support to srsUE
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* Fixed compilation issue for ARM and AVX512
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* Add clang-format file
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* Many bug-fixes and improved stability and performance in all parts
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## 18.09
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* Improved Turbo Decoder performance
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* Configurable SGi interface name and M1U params
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* Support for GPTU echo mechanism
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* Added UE detach capability
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* Refactor RLC/PDCP classes
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* Various fixes for ARM-based devices
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* Added support for bladeRF 2.0 micro
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* Many bug-fixes and improved stability and performance in all parts
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## 18.06.1
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* Fixed RLC reestablish
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* Fixed aperiodic QCI retx
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* Fixed eNB instability
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* Fixed Debian packaging
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## 18.06
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* Added eMBMS support in srsUE/srsENB/srsEPC
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* Added support for hard SIM cards
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* Many bug-fixes and improved stability and performance in all parts
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## 18.03.1
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* Fixed compilation for NEON
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* Fixed logging and RLC AM issue
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## 18.03
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* Many bug-fixes and improved stability and performance in all parts
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## 17.12
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* Added support for MIMO 2x2 in srsENB (i.e. TM3/TM4)
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* Added srsEPC, a light-weight core network implementation
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* Added support for X2/S1 handover in srsUE
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* Added support for user-plane encryption in srsUE
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* Many bug-fixes and improved stability and performance in srsUE/srsENB
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## 17.09
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* Added MIMO 2x2 in the PHY layer and srsUE (i.e. TM3/TM4)
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* eMBMS support in the PHY layer
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* Many bug-fixes and improved stability and performance in srsUE/srsENB
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## 002.000.000
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* Added fully functional srsENB to srsLTE code
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* Merged srsUE code into srsLTE and reestructured PHY code
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* Added support for SoapySDR devices (eg LimeSDR)
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* Fixed issues in RLC AM
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* Added support for NEON and AVX in many kernels and Viterbi decoder
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* Added support for CPU affinity
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* Other minor bug-fixes and new features
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## 001.004.000
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* Fixed issue in rv for format1C causing incorrect SIB1 decoding in some networks
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* Improved PDCCH decoding BER (fixed incorrect trellis initialization)
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* Improved PUCCH RX performance
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## 001.003.000
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* Bugfixes:
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* x300 master clock rate
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* PHICH: fixed bug causing more NACKs
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* PBCH: fixed bug in encoding function
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* channel estimation: fixed issue in time interpolation
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* DCI: Fixed bug in Format1A packing
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* DCI: Fixed bug in Format1C for RA-RNTI
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* DCI: Fixed overflow in MIMO formats
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* Improvements:
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* Changed and cleaned DCI blind search API
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* Added eNodeB PHY processing functions
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## 001.002.000
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* Bugfixes:
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* Estimation of extrapolated of out-of-band carriers
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* PDCCH REG interleaving for certain cell IDs
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* MIB decoding
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* Overflow in viterbi in PBCH
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* Improvements:
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* Synchronization in long multipath channels
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* Better calibration of synchronization and estimation
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* Averaging in channel estimation
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* Improved 2-port diversity decoding
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## 001.001.000
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* Added support for BladeRF
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