Procedure

1. Check the claimed rate of the current device in the product documentation. (For details, see Learn about the product, choose Get to Know the Product > Hardware Description > Chassis, and select the corresponding model, interface, and LTE/5G antenna interface.) The claimed rate is the ideal rate for sending traffic through a meter (the feeder of the meter is physically directly connected to the antenna interface of the device, without being affected by signal strength or interference). The actual rate is affected by the environment and may be different from the claimed rate.

2. Run the display cellular interface-number all command on the device to check the signal quality of the LTE/5G interface.

   [Huawei] display Cellular 2/0/0 all
   Modem State:
   Hardware Information.
   =====================
   Model = RG801
   Modem Type = 5G module
   Modem Firmware Version = RG801HEAAAR03A03M8G
   Hardware Version = HiB5000_MODEM Ver.A
   Integrate circuit card identity (ICCID) = 98681020100202000060
   International Mobile Subscriber Identity (IMSI) = 460070075590906
   Mobile Station International ISDN Number (MSISDN) = None
   International Mobile Equipment Identity (IMEI) = 867147050004796
   Factory Serial Number (FSN) = 0123456789ABCDEF
   Modem Status = Online
   Profile Information.
   ====================
   Profile 1
   --------
   PDP Type = IPv4, Header Compression = OFF
   Data Compression = OFF
   Packet Session Status = Active
   * - Default profile
   Network Information.
   ====================
   Current Service Status = Service available
   Service Domain = Combined                 
   Current Service = PS
   Packet Service = Attached
   Packet Session Status = Active
   Current Roaming Status = Roaming
   Network Selection Mode = Automatic
   Network Connection Mode = Automatic
   Current Network Connection = LTE(LTE)
   Mobile Country Code (MCC) = 369
   Mobile Network Code (MNC) = 77
   Mobile Operator Information = Unknown
   Tracking Area Code (TAC) = 1002
   Cell ID = 9881858
   Radio Information.
   ==================
   Current Bands : AUTO
   Current Band = B3
   Current RSSI >= -51 dBm
   Current RSRP = -70 dBm (strong)
   Current RSRQ = -4 dB
   Current SINR = 24 dB
   Bands supported :
     WCDMA: WCDMA850 WCDMA900 WCDMA2100
     FDD LTE: B1 B3 B5 B7 B8 B20 B28
     TDD LTE: B34 B38 B39 B40 B41            
     FDD NR: N1 N3 N28
     TDD NR: N41 N77 N78 N79
   Modem Security Information.
   ===========================
   SIM ID = 1
   PIN Verification = Disabled
   PIN Status = Ready
   Number of Retries remaining = 3
   SIM Status = OK

   Pay attention to the following parameters:

   • Current Network Connection: indicates the type of the currently connected network, for example, LTE, 5GSA, or 5GNSA. Check whether it meets the customer's requirements.
   • Cell ID = 9881858: indicates the cell ID of a base station. During a comparison test, ensure that the cell IDs of the tested devices are the same.
   • Current Band: indicates the frequency band in use. During a comparison test, ensure that the frequency bands used by the tested devices are the same.
   • Current RSSI: indicates the received signal strength indication (RSSI). In the speed test environment, the RSSI must be greater than or equal to -65 dBm.
   • Current RSRP: indicates the reference signal received power (RSRP). In the speed test environment, the RSRP must be greater than or equal to -85 dBm.
   • Current SINR: indicates the signal to interference plus noise ratio (SINR). In the speed test environment, the SINR must be greater than or equal to 20 dB.

3. Check whether LTE/5G antennas are installed. Pay attention to the following points:
   • The AR617 has two Wi-Fi antennas, and two LTE antennas need to be installed.
   • 5G antennas are different from LTE antennas and cannot be interchanged.
   • LTE antennas and Wi-Fi antennas are different and cannot be interchanged.

4. Improve signal quality.
   • Adjust the antenna direction towards an open area.
   • Adjust the device location or replace antennas with indoor/outdoor remote antennas, and keep the device and antennas away from signal interference sources (such as power supplies, metal, and other signal generators).

5. Ensure that the network cable and network adapter are gigabit capable when the device is connected to a PC. The Ethernet network speed on a Windows PC is for reference only. You are advised to perform a speed test in the wired network environment.

6. During the speed test, close the VPN software on the PC and set the power mode to the performance mode.
7. Run the tcp adjust-mss command to change the MSS of TCP packets on the cellular interface to 1200 bytes.

   [Huawei]interface Cellular 2/0/0
   [Huawei-Cellular2/0/0] tcp adjust-mss 1200

8. Set the speed test software.
   • The SpeedTest software requires the client to be installed on a PC to test the speed. There will be a decrease in the speed tested on web pages.
   • It is recommended that 10 flows be used for the speed test using iPerf to ensure that the speed test bottleneck does not lie in the software cache configuration.
   • You are advised to transfer multiple files at the same time using FTP or other file transfer protocols.

9. In GRE or other tunnel scenarios, packet encapsulation needs to be considered, and the actual rate of the cellular interface is used. Take the Ethernet over GRE scenario as an example. The actual cellular interface rate is about 10% higher than the actual file transfer rate.Run the display this interface command twice at an interval of 10 seconds on the cellular interface to check the number of sent and received packets and calculate the actual air interface transmission rate.

   [Huawei]interface Cellular 0/0/0
   [Huawei-Cellular0/0/0] display this interface 
   Cellular0/0/0 current state : UP
   Line protocol current state : UP
   Last line protocol up time : 2024-04-02 19:39:18 UTC+08:00
   Description:HUAWEI, AR Series, Cellular0/0/0 Interface
   Route Port,The Maximum Transmit Unit is 1500, Hold timer is 10(sec)
   Internet Address is negotiated, 20.20.20.177/32
   Last physical up time   : 2024-04-02 19:39:18 UTC+08:00
   Last physical down time : 2024-04-02 19:38:11 UTC+08:00
   Current system time: 2024-04-03 14:47:40+08:00
   Modem State: Present
   Model = EC200T-EU
   Current Network Connection = LTE(LTE)
   Current RSSI = -69 dBm
   Current SINR = 19 dB (good)
   Last 300 seconds input rate 0 bytes/sec 0 bits/sec 0 packets/sec
   Last 300 seconds output rate 0 bytes/sec 0 bits/sec 0 packets/sec
   Input: 28242385 packets, 16357630233 bytes
     Unicast:           28043838,    Ununicast:             198547
   
   Output: 532746947 packets, 525154739388 bytes
     Unicast:                  0,    Ununicast:          532746947
       Input bandwidth utilization  :    0%
       Output bandwidth utilization :    0%