foxconn RPQN O-RU Local 5G NR System User Guide

Foxconn RPQN O-RU Installation and
Operating Guide

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⚠️ Disclaimers
The information contained in this document is the proprietary and exclusive property of Foxconn except as otherwise indicated. No part of this document, in whole or in part,  may be reproduced, stored, transmitted, or used for design purposes without the prior written permission of Foxconn. The information contained in this document is subject to  change without notice. The information in this document is provided for informational purposes only. Foxconn specifically disclaims all warranties, express or limited,  including, but not limited, to the implied warranties of merchantability and fitness for a particular purpose, except as provided for in a separate software license agreement.
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This document may contain information of a sensitive nature. This information should not be given to persons other than those who are involved in the Local 5G NR System  project or who will become involved during the life cycle

Version History

Version

|

Date

|

Description of revision

---|---|---
v0.1| 2020/8/19| Initial version of RPQN O-RU Installation and Operating Guide
v0.2| 2020/8/20| Typo correct and append more info
v0.3| 2020/8/20| Unified style and correct typos
v0.4| 2020/8/21| Refine the chapter 2
v0.5| 2020/8/21| Add reboot/shutdown procedure
v0.6| 2020/8/26| Add reset button and LED info
v0.7| 2020/11/18| Refine the information. Auto boot up.

Add FAQ & Troubleshooting

v0.8| 2020/11/24| Add sample app tutorial
v0.9| 2020/12/03| Modify sample app tutorial about VLAN tag, VSA configuration to decode SSB, some term’s definition in RU log
---|---|---
V1.0| 2020/12/24| Power on sequence/Add normal operation and firmware image upgrade with M-plane/ V1.1.5q.432 support Multicast
V1.1| 2021/01/13| Add antenna port number, correct 7901 LO, internal/external antenna
v1.3| | M-plane new feature list, pp lock example, ptp profile configuration, power cycle to recover
v1.4| 2021/03/10| Modify firmware image upgrade flow
v1.5| 2021/06/28| Add firmware and FlexRAN version match table
v1.6| 2021/07/28| Add support bands. Add supported prach format B4. How to calculate Tx power?

How to disable/enable DPD?

v.1.7| 2021/10/08| Remove the mounting kit section
v2.0| 2021/10/20| Add C/U/S/M version
v2.1| 2021/11/03| Refer to the external firmware upgrade guide
v2.2| 2021/11/04| Modify RU’s MAC address

Refer to the external mounting bracket, wall mount and ceil-mount installation guide

v2.3| 2021/11/19| Add model-name Add FCC statement

Add limited power source statement

v2.4| 2021/11/29| Add SFP+ statement

Add Class I adaptor statement

v2.5| 2021/12/20| Change power supply statement
v2.6| 2021/12/28| Change Figure1 of O-RU Specification
v2.7| 2022/01/18| Change power supply statement
v2.8| 2022/01/28| Add CE statement

Relevant documents

Guide_v1.1](https://docs.google.com/document/u/0/d/1vMOj4f8_KJRpsRwJy45B2glyblF9FUGiUDmabHPjySs/edit) Foxconn RPQN O-RU Firmware Upgrade Guide
[RP0-407]| [RP0-407] Foxconn Sample App Operation Guide_v1.2 Foxconn Sample App Operation Guide
[R00-406]| [R00-406] How to check PTP log in RPQN_v1.1 How to check PTP log in RPQN
[RP0-406]| [RP0-406] Foxconn O-RU-RPQN Mounting Bracket Installation Guide_v1.1 Foxconn O-RU-RPQN Mounting Bracket Installation Guide
---|---
[RP0-416]| Foxconn RPQN O-RU Operating instruction for V1 firmware_v1.0
[RP0-417]| [RP0-417] Foxconn RPQN O-RU Operating instruction for V2 firmware_v1.0 Foxconn RPQN O-RU Operating instruction for V2 firmware_v1.0

List of Packages

• Indoor RPQN O-RU
• Model name: RPQN-7801E, RPQN-7801I, RPQN-7800E, RPQN-7800I, RPQN-7901E, RPQN-7901I
• Antenna x 4 (For external antenna type O-RU)
• Accessories: Optional. Order separately.
  ○ 10Gb SFP+ GBIC
  ○ 1Gb Copper SFP
  ○ 12VDC AC Adapter Power cord
  ○ Mounting Kit

1.1 Overview of RPQN O-RU

1.2 Outlook
1.2.1 Indoor RPQN O-RU

• Right: Power indicator (LED for Power Status)
• Middle: System state indicator (LED for system Status)
• Left: Firmware image update indicator (LED for Link & Activity Status)

• One 1Gbps Ethernet RJ-45 connector (support of S/M-Plane)
• One 10Gbps Ethernet RJ-45 connector (current software version not support of C/U-Plane)
• One 10Gbps SFP+ (support of C/U-Plane)
• Reset button, Micro USB
• Support PoE++ (10Gbps Ethernet RJ-45) or Power jack of 12VDC power adapter

1.2.2 10Gb SFP+ optics (GBIC)

NOTE: Laser Class 1 optical transceiver shall be used only.
1.2.3 1Gb Active Copper SFP

1.2.4 12VDC AC Adapter Power cord

This product is intended to be supplied by a Listed Power Adapter or DC power source marked “L.P.S.” (or “Limited Power Source”), rated 12 Vdc, 5 A minimum or 56 Vdc 1.2  A minimum(For PoE), Tma = 40 degrees C minimum. If you need further assistance, please contact Foxconn for further information.
NOTE: If using a Class I adaptor, the power cord shall be a connector to a socket outlet with earthing connection

1.2.5 Mounting Kit
Please refer to “ [RP0-406] Foxconn O-RU-RPQN Mounting Bracket Installation
Guide_v1.0 ” for the mounting bracket, wall mount and ceil-mount installation.

1.3 Software Version
To show the current software version of RPQN O-RU. Please refer to the “ [RP0-417] Foxconn RPQN O-RU Operating instruction for V2 firmware_v1.0 “ Execute command “cat /home/root/test/version.txt”, it may look like below:

In this example, the software version tag was v2.2.4q.524.

 Regulation and Certification

2.1 Environmental and safety requirement
Environmental and safety requirements for RPQN O-RU hardware installation.
Warning:
Electric Shock. Please notice that the RF ports should be connected to a 50 Ω load (for example, a feeder with an antenna) before powering on the RPQN O-RU.

Warning: Hot parts.
To avoid the risk of hot parts, please use the RPQN O-RU with caution, and wait at least 30 minutes before handling the RPQN O-RU after powering off.
Only trained and qualified personnel are recommended to install, operate, maintain or handle the RPQN O-ORU, and please carefully read the safety information applicable to this product.
Only install RPQN O-RU in a restricted access location, and meet the minimum requirements of RF exposure compliance distance.

2.2 Federal Communication Commission Interference Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception,  which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance 33cm between the radiator & your body.

2.3 Conformite Europeenne Interference Statement
This device complies with Directive 2014/53/EU and UK Radio Equipment Regulations 2017 SI 2017/1206. issued by the Commission of the European Community.
Declaration of Conformity

• Please add certification standards in your user manual which depended on the test standards your device performed.
  ○ If the DoC should be a simplified version, please take the below as a reference –

• Hereby, Foxconn declares that the radio equipment type 5G NR base station is in
  compliance with Directive 2014/53/EU and UK Radio Equipment Regulations 2017 SI 2017/1206.

The frequency and maximum transmitted power in the EU are listed below,

• RPQN-7800E: 3450 – 3549.99MHz, 24 dBm
• RPQN-7800I: 3450 – 3549.99MHz, 24 dBm
• RPQN-7801E: 3750MHz, 24 dBm
• RPQN-7801I: 3750MHz, 24 dBm

Cabling and Assembly Instruction

Below the figure shows the SA L5G system. Figure 8 SA L5G System Architecture

3.1 RPQN O-RU cabling instruction
3.1.1 For O-RAN C/U/S/M-plane connection
10Gb SFP+ fiber cabling

• Intel 10Gb Short Range Optics (model: E10GSFPSR, 850 nm wavelength) + multi-mode fiber  or
• Intel 10Gb Long Range Optics (model: E10GSFPLR, 1310 nm wavelength) + single-mode fiber.

3.1.2 Antenna port number

3.1.3 Power supply

• PoE++ via 10Gb RJ-45 Ethernet port: recommend using Cat 6A Ethernet cable, or
• 12VDC power adapter: IN AC 100-240 V, 50/60 Hz, 2 A; OUT 12 V, 5 A.

3.1.4 Micro USB
Micro USB: for RPQN O-RU debug console.

Operating Instruction

4.1 Operating instruction
Please refer to “ [RP0-417] Foxconn RPQN O-RU Operating instruction for V2 firmware_v1.0” for the operating instruction.

4.2 Firmware upgrade
Please refer to “   [RP0-415] Foxconn RPQN O-RU Firmware Upgrade Guide_v1.3 ” for the firmware upgrade procedure.

4.3 How to use the sample app to verify O-RU working properly?
Please refer to [RP0-407] Foxconn Sample App Operation Guide_v1.1” for using sample-app to verify the FH connection (C/U-plane), S-plane and RF TX power.

FAQ

5.1 How to check if the O-RU is booted up and running normally?
RU’s console log shows the following.

• When “Latch xxx 1pps” strings are shown, the O-RU has got synchronization with a GM/BC and finished the initialization.
• Value definition:
  ○ 10R…means the number of packets received from BBU.
  ○ 10T…means the number of packets transmitted to BBU.
  ○ 64b: number of packets with size 64 bytes.
  ○ 65to128: number of packets with size between 65 bytes to 128 bytes.
  ○ uni>1158: number of packets with size greater than 1158.
  ○ total: total number of packets.
  ○ uni: number of uni-casting packets.
  ○ multi: number of multi-casting packets.
  ○ crc_err: number of packets with CRC error.
  ○ state = 1: RU is waiting for the 1st c-plane message.
  ○ state = 2: RU had received the 1st c-plane and started working.

5.2 Log “Iran 10GbE is not ready… d6fff000” is normal or abnormal?
No. Please check 10GbE connectivity and make sure 10GbE is a linkup to the DU server.
5.3 Why does RU’s log seem not aligned?
Usually, it indicates that PTP signal quality is not good. Please check the GM’s quality with GPS satellites.
5.4 Can I add a Switch between O-RU and GM?
Yes. But, please make sure Switch supports IEEE 1588 PTPv2.
5.5 Can I add a Switch to connect O-RU and O-DU?
Yes. Please make sure the following items:

• The L2 switch should support VLAN with tag.
• Those ports (connected to BBU and RU) should be in trunk mode
• Both VLAN 1 and VLAN 2 should be in those trunk ports
• Should keep VLAN tag in those ports (DO NOT set untag)
• Enable jumbo frames. Set frame size more than 9000 Bytes.

5.6 How to enable Auto boot up.?
If you want to make RU run when reboot without re-execute [RP0-417] Foxconn
RPQN O-RU Operating instruction for V2 firmware_v1.0 setting Step.6 and Step.7, please add below lines into /home/root/test/test.sh to configure IP and launch CU plane:

• How to change the configuration after enabling auto boot-up?
  ○ If you can remote SSH to O-RU with account/password: root/root
  i. Make changes in RRHconfig_xran.xml.
  ii. Running /home/root/test/reboot.sh
  ○ If you can not remote SSH to RRH, you can
  i. Connect to O-RU via the USB Serial Port.
  ii. Unplug the Power cord and plug again.
  iii. Once the prompt is shown, press “Ctrl+C” to stop the running process.
  iv. Make changes in RRHconfig_xran.xml.
  v. Running /home/root/test/reboot.sh

• How to disable auto boot-up?
  ○ Just remove or mark the above command in /home/root/test/test.sh.

5.7 What is the power-on sequence to bring up the Radio?

• Bring up from power off
  a. stop O-DU
  b. power on O-RU
  c. ./init_rrh_config_enable_cuplane
  d. wait PTP lock at O-RU
  e. start O-DU

• restart O-RU
  a. stop O-DU
  b. power down O-RU
  c. powers up O-RU
  d. ./init_rrh_config_enable_cuplane
  e. wait for PTP lock at O-RU
  f. start O-DU

5.8 How to separate PTP log from console log?
Please refer to “ [R00-406] How to check PTP log in RPQN_v1.0” for the procedure to get
PTP log from SSH terminal
5.9 Which FlexRAN version complies?
FlexRAN version 20.11 (the time offset must be changed to 484 for PRACH) and 21.03.
5.10 Which prach format does RU support?
RU only supports short prach format B4.
5.11 How to calculate Tx power?

• RRH_TX_ATTENUATION = 30.0, 30.0, 30.0, 30.0 -> output power is 0dBm per port
• RRH_TX_ATTENUATION = 20.0, 20.0, 20.0, 20.0 -> output power is 10dBm per port
• Antenna gain is 5dBi

5.12 How to disable/enable DPD?

• Disable DPD: RRH_RF_GENERAL_CTRL = 0x0, 0x0, 0x0, 0x0
• Enable DPD: RRH_RF_GENERAL_CTRL = 0x3, 0x0, 0x0, 0x0
• Note: the setting is affected for all 4 ports.

 Troubleshooting

6.1 Why DU can not receive any data from RU?
Please check the following items:

1. Check that PTP is synced and GM’s quality. You may need to check GM’s status with satellites,
   O-RU’s log and O-DU’s log.

2. Check the 10GbE interface in the DU server is linked up.

3. Check the 10GbE interface in the DU server is running at 10Gb speed

4. Check connectivity, and make sure the SFP+ module is actually inserted into the cage of the
   connector in the DU server.

5. Check O-RU’s log for the xRAN packet:
   a. If the log does not contain “an: log… ……………. ”, it means O-RU does not receive any
   C-Plane packet from O-DU.
   b. Sometimes, it was caused by a PTP sync issue.
   

6. Please run an Intel sample app to make sure O-RU is working properly.

6.2 Recover O-RU
When O-RU is going to a weird state like the phenomenon below, please POWER CYCLE O-RU.

1. 10T state value is jumping 1&2

Version: v2.7

References

• António Meireles · António Meireles
• test.sh

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