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Confidential – Not to be Circulated www.comcores.com
Comcores
Radio over Ethernet Gateway for Future
Fronthaul Networks
FG...
www.comcores.comConfidential – Not to be2
Agenda
 About Comcores
 Motivation for Ethernet Based Fronthaul
 Comcores Ove...
www.comcores.comConfidential – Not to be3
About Comcores
 Established in 2014
 Globally oriented high-tech company,
head...
www.comcores.comConfidential – Not to be4
Motivation for Ethernet Based
Fronthaul
 New fronthaul interface technologies a...
www.comcores.comConfidential – Not to be5
Comcores Overview on next
generation fronthaul networks
BaseBand
CPRI fiber conn...
www.comcores.comConfidential – Not to be6
Comcores gateway
 Fits on both radio and base band side
 support of CPRI, new ...
www.comcores.comConfidential – Not to be7
Demo setup
 IEEE P1914.3 - CPRI over Ethernet mapper/de-mapper
 IEEE P1914.1 -...
www.comcores.comConfidential – Not to be8
Lab setup
 Xilinx VC709 FPGA demonstration platform
 CPRI verification by Saro...
www.comcores.comConfidential – Not to be9
CPRI over Ethernet - motivation
 C-RAN
 Bridge to carry current CPRI flows in ...
www.comcores.comConfidential – Not to be10
CPRI over Ethernet - result
 Synchronous traffic
over asynchronous
networks
 ...
www.comcores.comConfidential – Not to be11
Intra-PHY Split Proof of Concept
Source: ”White Paper of Next Generation Fronth...
www.comcores.comConfidential – Not to be12
PDSCH cell load
 PDSCH cell load is dependent on the real traffic for Intra-PH...
www.comcores.comConfidential – Not to be13
Low load in a 10 MHz cell
 Succesful cell synchronization
 1 user allocated 1...
www.comcores.comConfidential – Not to be14
Peak load in a 10 MHz cell
 Full allocation of user data (PDSCH)
 < 1 % EVM
...
www.comcores.com15
Acknowledgement
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NGFI (Next Generation Fronthaul Interface) native RoE (Radio over Ethernet)

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This is a presentation and a demo for both NGFI (Next Generation Fronthaul Interface) native RoE (Radio over Ethernet) with Intra PHY split implemented in it, and CPRI over Ethernet encapsulated in structure agnostic mode. Compared to CPRI, the NGFI native RoE implementation improves bandwidth usage greatly, which better supports 5G applications demanding for higher bandwidth. In the CPRI over Ethernet demonstration, bidirectional CPRI flows are recovered without error, which enables C-RAN (centralized radio access network) architecture by using Ethernet as a transport network.

Author : Anders Lund, Bomin Li, Thomas Nørgaard, Comcores

Presented at ITU-T Focus Group IMT-2020 Workshop and Demo Day, 7 December 2016.

More details on the event : http://www.itu.int/en/ITU-T/Workshops-and-Seminars/201612/Pages/Programme.aspx

Published in: Technology
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NGFI (Next Generation Fronthaul Interface) native RoE (Radio over Ethernet)

  1. 1. Confidential – Not to be Circulated www.comcores.com Comcores Radio over Ethernet Gateway for Future Fronthaul Networks FG IMT-2020 Workshop and Demo Day Anders Lund, Comcores ApS Bomin Li, Comcores ApS Thomas Nørgaard, Comcores ApS
  2. 2. www.comcores.comConfidential – Not to be2 Agenda  About Comcores  Motivation for Ethernet Based Fronthaul  Comcores Overview on next generation fronthaul networks  Demo setup  Demo results Comcores Headquarter
  3. 3. www.comcores.comConfidential – Not to be3 About Comcores  Established in 2014  Globally oriented high-tech company, headquartered in Scion DTU Science Park, 20 min outside Copenhagen, Denmark  IP cores and design services for communication systems  Specialized in digital radio systems Comcores Headquarter
  4. 4. www.comcores.comConfidential – Not to be4 Motivation for Ethernet Based Fronthaul  New fronthaul interface technologies are required to satisfy various RAN deployment and evolution requirements, and reduce fronthaul transmission costs  Current dedicated point-to-point connection between BBUs and RRUs (such as CPRI/OBSAI) will evolve to many-to-many fronthaul mainstream switch networks (such as Ethernet) due to cost, availability and flexibility  Fronthaul architecture is migrating from traditional RAN where single BBU connects to single/few RRUs to architectures where multiple centralized BBUs connect to multiple RRUs making a packet switched technology ideal  Ethernet is a widely adopted & nearly ubiquitous standard technology CPRI BasebandRadio Eth Radio Baseband Pool Radio Radio Packet Fronthaul Eth Eth Eth
  5. 5. www.comcores.comConfidential – Not to be5 Comcores Overview on next generation fronthaul networks BaseBand CPRI fiber connection Virtual BBU Pool BaseBandBaseBandBaseBand RRHRF RRH RRH RF Time Sensitive Network (TSN) SDN Controller Aggregator CPRI GW C&M Ethernet Ethernet RF RF L1 Offload
  6. 6. www.comcores.comConfidential – Not to be6 Comcores gateway  Fits on both radio and base band side  support of CPRI, new radio interface and high speed Ethernet Comcores All-in-One RAU system Virtual BBU Backhaul Ethernet Fronthaul Network (NGFI) RAU Pico Macro All-in-One Pico Comcores RAU system CPRI RF/DFE NGFI Split x L1 offload Split 4 RoE EthernetTSNMAC& PCS Pico Macro vBBU vBBU L1 processing resources L1 processing resources L1 processing resources L1 processing resources L2/L3 processing resources Orchestrator RoE EthernetTSN MAC&PCS Virtual L1 resource pool RAU RAU RAU NGFI Split x RoE EthTSN MAC& PCS RF/ DFE vBBU
  7. 7. www.comcores.comConfidential – Not to be7 Demo setup  IEEE P1914.3 - CPRI over Ethernet mapper/de-mapper  IEEE P1914.1 - Next Generation Fronthaul Interface  IEEE 802.3 - Time Sensitive Network features  IEEE 1588v2 – time stamp BBU Gateway TSN MAC RoE RX (Structure Agnostic) RF (Spectrum Analyzer) RRH Gateway L1 Offload RoE RX (Native)Varying number of LTE modulated symbols Control & Management I Q TSN MAC RoE TX (Structure Agnostic) RoE TX (Native) Varying number of LTE modulated symbols Control & Management CPU baseband processing (ROM pre-loaded) Ethernet- based FH CPRI tester (Sarokal) CPRI tester (Sarokal) NGFI (Split 4) CPRI over Ethernet (Structure Aware) RF RoE RX (Structure Aware) CPRI tester (Sarokal) CPRI over Ethernet (Structure Agnostic) RoE TX (Structure Agnostic) CPRI tester (Sarokal) NGFI (Split 4) CPRI over Ethernet (Structure Aware) CPRI over Ethernet (Strucutre Agnostic IEEE 1588v2
  8. 8. www.comcores.comConfidential – Not to be8 Lab setup  Xilinx VC709 FPGA demonstration platform  CPRI verification by Sarokal X-STEP tester  LTE demondulation verification by Keysight PXA spectrum analyzer
  9. 9. www.comcores.comConfidential – Not to be9 CPRI over Ethernet - motivation  C-RAN  Bridge to carry current CPRI flows in future Ethernet based fronthaul networks
  10. 10. www.comcores.comConfidential – Not to be10 CPRI over Ethernet - result  Synchronous traffic over asynchronous networks  Lossless transmission based on the clock recovery and delay control schemes
  11. 11. www.comcores.comConfidential – Not to be11 Intra-PHY Split Proof of Concept Source: ”White Paper of Next Generation Fronthaul Interface” SFP+ SFP+ TSN MAC RoE Tx R A M LTE Data ROM BBU GEN LTE Time TSN MAC RoE Rx L1 DL Offload R A M LTE Time AD9361 Keysight PXA Spectrum Analyzer SI5324 @156.25 MHz I2C MicroBlaze AXI GPIO AXI SPI AD9361 Digital interface FMCOMMS3 Tx1 ctrl Data interface RF 122.88 MHz F M C Ref clk Tx FIFO eth_clk BBU RRH Keysight MXG Signal Generator 10G Ethernet
  12. 12. www.comcores.comConfidential – Not to be12 PDSCH cell load  PDSCH cell load is dependent on the real traffic for Intra-PHY splits Downlink shared channel for user data
  13. 13. www.comcores.comConfidential – Not to be13 Low load in a 10 MHz cell  Succesful cell synchronization  1 user allocated 1 RB (bottom)  Autodetection of cell configuration  Autodetection of user allocation
  14. 14. www.comcores.comConfidential – Not to be14 Peak load in a 10 MHz cell  Full allocation of user data (PDSCH)  < 1 % EVM  ~160 Mbps load on Ethernet link  1:4 reduction compared to CPRI
  15. 15. www.comcores.com15 Acknowledgement

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