Abstract
OpenAirInterface(OAI) is an open-source project that implements the 3rd Generation Partnership Project (3GPP) technology It makes possible to deploy and operate a 4G Long-Term Evolution (LTE) network today and 5G New Radio (NR) networks in the future at a very low cost. The research will focusing on use of channel coding and learning based methods to address challenges of Ultra reliable low latency communication with special emphasis on coordinated multipoint communication and advanced channel code designs. Implementing proposed solutions using OpenAirInterface5G RF simulator.
Introduction
OpenAirInterface5G is a platform of wireless technology. It is a flexible platform towards 5G NR ecosystem. Downlink (DL) channels such as Primary and Secondary Synchronization signals, physical broadcast channel (PBCH), physical downlink control channel (PDCCH), physical downlink shared channel (PDSCH) are supported in OAI 5G. Frequency division and time division duplex configurations can be tested in various bandwidths. Uplink channel support: physical random access channel (PRACH), physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH).
Materials and Methods
gNB
OAI RF-simulator development environment for the entire procedures of the gNB and the UE
References
https://openairinterface.org
https://gitlab.eurecom.fr/oai/openairinterface5g//wikis
OpenAirInterface: Democratizing innovation in the 5G Era
Florian Kaltenberger a , Aloizio P. Silva b,c , Abhimanyu Gosainb , Luhan Wang d , Tien-Thinh Nguyena
Acknowledgement
OpenAirInterface is a large open-source project with many contributors from different institutions. The work presented here would not have been possible without them.
Conclusions
OAI is an open source initiative that today provides a 3GPP compliant reference implementation of LTE, gNB, UE, and evolved packet core (EPC) that runs on general purpose computing platforms (x86). OAI has been presented over both perspectives Standalone and Non-Standalone scenarios. In particular, describing its evolution regarding 5G and NR technologies. The current OAI development status was de-scribed, mainly in terms of 5G gNB, Phy and MAC layers, 4G EPC and 5G Core network (5GC).
Department Name: Bharti School Of Telecommunication Technology And Management, IIT Delhi
Industrial Significance
Software-Defined 5G System
Heterogeneous Networks
Medical/Health Verticals
Large-Scale Emulation
Technology Readiness Level: In PHY (gNB & UE): Highly efficient 3GPP compliant LDPC encoder and decoder Base grarph BG1 and BG2 supported, NR-PUSCH (validated in simulation only), NR-PUCCH (validated in simulation only), NR-PRACH (partially validated)
Title of poster: OpenAirInterface Software for Innovative 5G Wireless
Presenter’s Details: Avinash Krishna, Laishram Mona Devi
Result
Openairinterface5G RF simulator provide connection and synchronization between UE and gNB. The screenshot of the terminal window shows that the gNB is looking for signals to synchronize itself continuously, and when it is found, the synchronization process is handled.
Industry Day Theme # Next-generation 5G Solutions
Compile run: ./build_oai –gNB –nrUE -w�Run gNB : sudo RFSIMULATOR=eNB ./ran_build/build/nr-softmodem -O ../targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.107PRB .usrpn 300.conf --parallel-config PARALLEL_SINGLE_THREAD --rfsim --phy_test --l2
Run UE : sudo RFSIMULATOR=127.0.0.1 LD_LIBRARY_PATH= ./ran_build /build /nr-uesoftmodem --rfsim --phy-test –ue-nb-ant-rx 4
modem
nr_softmodem
UE
gNB
physical_procedureS_gNB_uecpec_RX()
�
physical_procedureS_gNB_TX()�
physical_procedureS_nrUE_TX()�
physical_procedureS_nrUE_RX()�
RF SIMULATOR�
txdata[atx][n]�atx= 0 …..Ntx-1�
rxdata[arx][n]�arx= 0 …..Nrx-1�
Figure: OAI RF simulator Synchronization
Socket
Multi user
Channel Model
rfsimulator
UE
Frequency Domain
One line is a frame
Colour is the energy relative to average
Constellation Graph
The signal after equalization per channel
Time Domain
One line is a frame
Colour is the energy relative to average