HELIOS 5G NR O-RAN vBBU (O-CU and O-DU)
Integrated hardware and software package including 5G O-CU and O-DU functions.
Overview
Helios® 5G NR O-RAN Virtualization Baseband Processing Unit (vBBU) comprises the relevant software of Central Unit (CU) and Distributed Unit (DU) and co-located on a single standardized Intel x86-based COTS server, as the signal resource of the 5G NR O-RAN Distributed Radio Access Networks (D-RAN) for In-building Coverage and provides the pooled baseband resource for the buildings (s) or area, it will implement Centralization and Virtualization of 5G NR RAN eNodeB functions as transfer of user data, handoffs/mobility control, spectrum/network sharing, timing & synchronization, positioning, session management etc. The Helios® 5G NR O-RAN vBBU owns four 10Gbps SFP+ optical ports and supports up to four 5G NR O-RAN Fronthaul Gateway (FHGW/HUB) by fiber cable based on eCPRI (Enhance Common Public Radio Interface) protocol as O-RAN 7-2x Split option.
Features
- Duplex mode TDD
- Support multi-Cells
- 400 Active Users and 1200 RRC Users per Cell
Standard Conformance
- O-RAN.WG8.IOT
- O-RAN.WG4.IOT
- End-to-end Performance and Stress test
- 3GPP 33.511 SCAS
Technical Specifications
| 3GPP | R15 / R16 |
|---|---|
| Network Architecture | SA |
| Min. Server Hardware | Intel® Xeon® Processor D-2177NT 1.9GHz 14 Cores, 2*16G RAM, 128GB SATA, CentOS Linux 7.2 |
| Network Interface | Backhaul: N2 to AMF/ N3 to UPF Fronthaul: O-RAN 7-2x Category A split/ eCRPI |
| Transmission Scheme | DL CP-OFDM/ UL CP-OFDM/ UL DFT-S-OFDM |
| Channel Bandwidth | 100MHz, 90MHz, 80MHz, 60MHz, 40MHz or 20MHz (Customized) |
| Duplex Mode | TDD – Time Division Duplex |
| Max. NR Peak Rate | DDDDD DDSUU Frame Structure，Special Subframe 6:4:4
4T4R: Downlink 1.5Gbps, Uplink 230Mbps |
| Cells & Capacity | 400+ Active Users and 1200+ RRC Users per cell
1 Cell @ 4T4R / 100MHz BW |
| Cell Splitting & Combination | Supported |
| PRACH | Short preamble, L = 139K; Format B4: Number of repetitions 12/ CP length 15.25us/ Preamble length 400us |
| HARQ | DL asynchronous HARQ/ UL asynchronous HARQ/ 16 parallel HARQ processes |
| RLC Mode | TM/UM/AM |
| PDCP | 12/18 bits SN for DRBs/ IP header compression and decompression/ Ciphering and Deciphering/ Reordering based on SN/ Duplicate packet detection and removal/ Integrity protection |
| RRC | RRC states (IDLE, Connected, Connected Inactive) and state transfer/ MIB broadcasting/ RRC Connection establish, re-configure and release/ SRB establish and release/ DRB establish/modify/release/ ARQ configure/ HARQ configure/ Paging/ Measurement/ Mobility management |
| NG Interface | Handover/ Paging/ UE context management/ PDU session management/ NAS message transport/ NG interface management |
| Xn Interface | Handover/ Paging/ UE context management/ Xn interface management |
| F1 Interface | UE context management/ RRC message transport/ Paging/ F1 interface management |
| Sync Mode Supported | 1588 v2 / SyncE / GPS / Beidou |
| OAM Interface | NETCONF |
