5G

T-Mobile Makes Standalone 5G Data Session on a Multi-Vendor Radio and Core Network

in News, 5G, T-Mobile, LTE
T-Mobile 5G

T-Mobile USA has announced that the operator has made successful standalone end-to-end 5G data session on a multi-vendor 5G next-generation radio and core network, an important step in realizing the true potential of 5G.

Ericsson Demonstrates Live 5G at Google I/O 2019

in News, 5G, Ericsson, Google
Ericsson 5G at Google I/O 2019

Ericsson brought live 5G network coverage for developers from around the world at the annual Google I/O event in Mountain View, California this week. Google had selected Ericsson as 5G infrastructure provider for this year’s developer conference, I/O 2019.

Verizon Starts Offering Commercial 5G Service for 5G-enabled Smartphones in Select Areas

in News, 5G, Verizon
Verizon 5G Ultra

Verizon has turned on its 5G Ultra Wideband network in select areas of Minneapolis and Chicago last week. Verizon customers can access a commercial 5G network with the 5G-enabled smartphone, the moto z3 combined with 5G moto mod. 

5G NG-RAN and UE identifiers

in 5G, NG-RAN identifiers

- RAN UE NGAP ID: A RAN UE NGAP ID shall be allocated so as to uniquely identify the UE over the NG interface within an gNB. When an AMF receives an RAN UE NGAP ID it shall store it for the duration of the UE-associated logical NG-connection for this UE. Once known to an AMF this is included in all UE associated NGAP signalling.

E-UTRA-NR Dual Connectivity (EN-DC)

in 5G, Dual Connectivity, E-UTRA-NR Dual Connectivity, EN-DC
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E-UTRAN supports MR-DC via E-UTRA-NR Dual Connectivity (EN-DC), also called MR-DC with EPC, in which a UE is connected to one eNB that acts as a MN and one en-gNB that acts as a SN. The eNB is connected to the EPC via the S1 interface and to the en-gNB via the X2 interface. The en-gNB might also be connected to the EPC via the S1-U interface and other en-gNBs via the X2-U interface.

Dual Connectivity (DC) and Multi-Radio Dual Connectivity (MR-DC)

in 5G, Dual Connectivity, MR-DC, Multi-Radio Dual Connectivity, 4G
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E-UTRAN supports Dual Connectivity (DC) operation whereby a multiple Rx/Tx UE in RRC_CONNECTED is configured to utilise radio resources provided by two distinct schedulers, located in two eNBs connected via a non-ideal backhaul over the X2 interface

5G Xn Interface Protocol Architecture

in 5G, Xn Interface, Xn-C, Xn-U
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The Xn User plane (Xn-U) interface is defined between two NG-RAN nodes.  The transport network layer is built on IP transport and GTP-U is used on top of UDP/IP to carry the user plane PDUs.

5G NG Interface Protocol Architecture

in 5G, NG Interface, NG-C, NG-U
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The NG user plane interface (NG-U) is defined between the NG-RAN node and the UPF. The transport network layer is built on IP transport and GTP-U is used on top of UDP/IP to carry the user plane PDUs between the NG-RAN node and the UPF.

NG-U provides non-guaranteed delivery of user plane PDUs between the NG-RAN node and the UPF.

Separation of gNB-CU-CP and gNB-CU-UP

in 5G, gNB, gNB-CU-CP, gNB-CU-UP
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gNB-CU-Control Plane (gNB-CU-CP): a logical node hosting the RRC and the control plane part of the PDCP protocol of the gNB-CU for an en-gNB or a gNB. The gNB-CU-CP terminates the E1 interface connected with the gNB-CU-UP and the F1-C interface connected with the gNB-DU.

5G NG-RAN Radio Protocol Architecture

in 5G, 5G NG-RAN, 5G NR, 5G Radio Protocol Architecture
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The different sublayers used in  Radio Protocol Architecture are: Medium Access Control (MAC), Radio Link Control (RLC), Packet Data Convergence Protocol (PDCP) and Service Data Adaptation Protocol (SDAP), Radio Resource Control (RRC) and Non-Access Stratum (NAS). Where:

-The physical layer offers to the MAC sublayer transport channels;

5G NG-RAN Architecture

in 5G, 5G Architecture, NG-RAN Architecture
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gNB Central Unit (gNB-CU): a logical node hosting RRC, SDAP and PDCP protocols of the gNB or RRC and PDCP protocols of the en-gNB that controls the operation of one or more gNB-DUs. The gNB-CU terminates the F1 interface connected with the gNB-DU. 

Functional Split between NG-RAN and 5GC

in 5G, 5g-NR, NG-RAN
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The gNB and ng-eNB host the following functions:

-Functions for Radio Resource Management: Radio Bearer Control, Radio Admission Control, Connection Mobility Control, Dynamic allocation of resources to UEs in both uplink and downlink (scheduling);

Ericsson and Intel to Demonstrate 4G + 5G Dynamic Spectrum Sharing at MWC 2019

in News, 5G, 5G NR, Ericsson, Intel, 4G, LTE
Ericsson and Qualcomm Complete Interoperability Testing of 5G NR Data

Ericsson will showcase activation of Ericsson Spectrum Sharing with an Intel 5G device at Mobile World Congress 2019. The demo will show that 4G and 5G traffic can run simultaneously on the same frequency carrier.  

5G Tool box in MATLAB: Possibilities and Limitations

in 3GPP, 5G, 5G NR, MATLAB

MATLAB has introduced its 5G Toolbox, which provides standards compliant waveforms and reference examples for modeling, simulation, and verification of the physical layer of 3GPP 5G New Radio (NR) communications systems. 5G Toolbox can be used  to design algorithms and predict end-to-end link performance of systems that conform to the 5G Release 15 standard.

5G Tests, Trials Gain Momentum Across Globe

in News, 5G, Network Slicing, MIMO, LTE
5G Status - Jan 2019

5G has gathered momentum globally as per latest GSA report. 201 operators, in 83 countries are currently investing in 5G mobile and 5G FWA networks, ~30% increase since mid-2018. Level of commitments include tests, trials, planned and pilot deployments, and launches.