HUAWEI B311-221 LTE CPE

Product Description

Issue: 02 | Date: 2019-08-15

Manufacturer: HUAWEI TECHNOLOGIES CO., LTD.

About This Document

This document provides information regarding the features, main functions and services, technical specifications, and technical references of the HUAWEI B311-221 LTE CPE.

Document Contents:

Chapter 1: Product Overview - Provides an overview of the product.
Chapter 2: Technical Specifications - Describes the specifications of the product hardware, software, and user interface.
Chapter 3: Services and Applications - Describes the main functions and applications of the product.
Chapter 4: System Structure and Scenario Constraints - Describes the product system structure.
Chapter 5: Technical References - Describes the standards and communication protocols of the product.
Chapter 6: Packing List - Describes the devices and accessories that comprise the product package.

Note: This document is an invitation to offer but not an offer. It is intended to describe the general features and functions of a product. The features and functions of certain products may vary with the requirements of customers.

History

Issue	Date	Details
01	2019-05-24	Initial official release.
02	2019-08-15	Updated the appearance.

Acronyms and Abbreviations

Acronym or Abbreviation	Full Spelling
3GPP	3rd Generation Partnership Project
ACS	Auto Configuration Server
AES	Advanced Encryption Standard
ALG	Application Layer Gateway
AMR-NB	Adaptive Multi-Rate compression - Narrowband
AMR-WB	Adaptive Multi-Rate compression - Wideband
AP	Access Point
APN	Access Point Name
ARP	Address Resolution Protocol
CLAT	Customer-side Translator
CPE	Customer Premises Equipment
CS	Circuit Switched
CSFB	Circuit Switched Fallback
DC-HSPA+	Dual-Carrier - High Speed Packet Access Evolution
DHCP	Dynamic Host Configuration Protocol
DL	Downlink
DMZ	Demilitarized Zone
DNS	Domain Name Server
DTMF	Dual-Tone Multi-Frequency
EDGE	Enhanced Data rates for Global Evolution
E-UTRA	Evolved Universal Terrestrial Radio Access Network
FDD	Frequency Division Duplex
HOTA	Huawei Firmware Over the Air
HSPA	High Speed Packet Access
HSPA+	High Speed Packet Access Evolution
GPRS	General Packet Radio Service
GSM	Global System for Mobile Communications
IEEE	Institute of Electrical and Electronics Engineers
IP	Internet Protocol
IPSec	Internet Protocol Security
IPv4	Internet Protocol version 4
IPv6	Internet Protocol version 6
ICMP	Internet Control Message Protocol
L2TP	Layer Two Tunneling Protocol
LAN	Local Area Network
LED	Light Emitting Diode
LTE	Long Term Evolution
MAC	Media Access Control
MDI	Medium Dependent Interface
MDIX	Medium Dependent Interface Crossover
MIMO	Multi-input Multi-output
MME	Mobility Management Entity
NAT	Network Address Translation
NAPT	Network Address and Port Translation
PC	Personal Computer
PCC	Primary Component Carrier
PGW	PDN Gateway
PIN	Personal Identification Number
PLAT	Provider-side Translator
PPTP	Point-to-Point Tunneling Protocol
QAM	Quadrature Amplitude Modulation
QR	Quick Response
RFC	Request For Comments
RTCP	Real-time Transport Control Protocol
RTP	Real-time Transport Protocol
SCP	Service Control Point
SDRAM	Synchronous Dynamic Random Access Memory
SDP	Session Description Protocol
SGW	Serving Gateway
SIP	Session Initiation Protocol
SMA	SubMiniature version A
SMS	Short Message
SOHO	Small Office Home Office
SSID	Service Set Identifier
TDD	Time Division Duplex
TKIP	Temporal Key Integrity Protocol
UE	User Equipment
UL	Uplink
UMTS	Universal Mobile Telecommunications System
UPnP	Universal Plug and Play
USB	Universal Serial Bus
USIM	UMTS Subscriber Identity Module
VoIP	Voice over IP
VoLTE	Voice over LTE
VPN	Virtual Private Network
WAN	Wide Area Network
WEP	Wireless Encryption Protocol
Wi-Fi	Wireless Fidelity
WMM	Wi-Fi Multimedia
WPA/WPA2-PSK	Wi-Fi Protected Access/Wi-Fi Protected Access II - Pre-Shared Key
WPA2-PSK	Wi-Fi Protected Access II - Pre-Shared Key
WPS	Wi-Fi Protected Setup

1 Product Overview

The HUAWEI LTE CPE B311-221 is a Long Term Evolution (LTE) wireless gateway designed for multiple users in household or small office environments, enabling Internet access.

The B311-221 supports 3GPP Release 9 with UE downlink/uplink category 4. Its supported service functions include:

Data service up to DL 150Mbps (64QAM) and UL 50Mbps (16QAM).
Working bands: LTE (B1/3/7/8/20/38), UMTS (B1/B8), GSM (B2/B3/B5/B8).
Voice service: CS/ VoIP (Optional) / VoLTE (Optional).
Wi-Fi: 2.4 GHz 802.11b/g/n 2x2 MIMO, supporting up to 300Mbps and a maximum of 32 users.
1 GE port for LAN/WAN.
Multi APN function (Optional) for Data, Voice (VoIP), TR-069 services.
Routing mode: NAT enabled (Default) / IP pass-through (Optional).
VPN client service (L2TP, PPTP).
Customer management via WebUI or HUAWEI SmartHome APP (iOS or Android).
Operator maintenance via TR-069 (Optional) and TR-143 (Optional).
Huawei Firmware Over the Air (HOTA) support.

Textual Description of Figure 1-1 B311-221 appearance: The figure shows multiple views of the HUAWEI B311-221 device, including front, side, and back perspectives, highlighting its ports and design.

2 Technical Specifications

2.1 Hardware Specifications

Table 2-1: Technical specifications of the B311-221 main unit

Item

Description

Technical standard

WAN: 3GPP Release 9
LAN: IEEE 802.3/802.3u
WLAN: IEEE 802.11b/g/n

Working band/frequency

LTE: B1/B3/B7/B8/B20/B38
UMTS: B1/B8
GSM: B2/B3/B5/B8
WLAN: 2.402 GHz~2.482 GHz

External port

One power adapter port
One LAN/WAN port (RJ45), IEEE 802.3/802.3u compatible
One phone port (RJ11)
One external LTE antenna ports (SMA)
One SIM card slot (Mini-SIM)

Antennas

Built-in LTE/UMTS/GSM primary antenna
Built-in LTE/UMTS secondary antenna
Built-in WLAN 2.4 GHz antenna

LED Indicators

One power indicator (White)
One Internet status indicator (Cyan: LTE, Blue: UMTS, Yellow: GSM, Green: Ethernet, Red: No SIM/Low Balance)
One Wi-Fi/WPS/Hi indicator (White) (Flash slowly: Pairable HiLink device detected; Flash quickly: HiLink pairing in progress; Off: Wi-Fi disabled)
One LAN indicator (White)
One group of signal strength indicators (White)

Buttons

One Power ON/OFF switch
One WPS/Hi button (Press to connect HiLink device to Wi-Fi, or enable WPS when Wi-Fi is steady)
One Reset button

Maximum transmit power

LTE: B1/B3/B7/B8/B20/B38: 23dBm±2dB
UMTS: B1/B8: 24dBm+1/-3dB
GSM: B2/B3: 30dBm±2dB, B5/B8: 33dBm±2dB
WLAN: 802.11b: 13 dBm, 802.11g/n: 14.5 dBm

Receiving sensitivity

LTE

Band	1.4MHz (dBm)	3MHz (dBm)	5MHz (dBm)	10MHz (dBm)	15MHz (dBm)	20MHz (dBm)
B1	-100	-97	-95.2	-94
B3	-101.7	-98.7	-97	-94	-92.2	-91
B7	-98	-95	-93.2	-92
B8	-102.2	-99.2	-97	-94
B20	-97	-94	-91.2	-90
B38	-100	-97	-95.2	-94

UMTS

B1: -106.7dBm
B8: -103.7dBm

GSM

B2/B3/B5/B8: -102dBm

WLAN

802.11b: -85 dBm (11 Mbps)
802.11g: -71 dBm (54 Mbps)
802.11n: -69 dBm (65 Mbps)

Power consumption

< 12 W

AC/DC power supply

AC (input): 100V-240V 50Hz/60Hz
DC (output): 12V/1A

Dimensions (Maximum)

181 mm (Width) x 126 mm (High) x 36 mm (Deep)

Weight

About 218 g (excluding the power adapter)

Temperature

Working temperature: 0°C to 40°C
Storage temperature: -20°C to +70°C

Humidity

5% – 95% (non-condensing)

Certification/Compliance

CE certification, ROHS, REACH, WEEE, Wi-Fi certification, ErP, GCF

2.2 Antenna Specifications

2.2.1 Build-in LTE Antenna

Table 2-2: LTE antenna specifications

Item	Description
Frequency	FDD LTE: B1: UL 1920–1980 MHz, DL 2110–2170 MHz B3: UL 1710–1785 MHz, DL 1805–1880 MHz B7: UL 2500–2570 MHz, DL 2620–2690 MHz B8: UL 880–915 MHz, DL 925–960 MHz B20: UL 832–862 MHz, DL 791–821 MHz TDD LTE: B38: UL 2570–2660 MHz, DL 2570–2660 MHz UMTS: B1: UL 1920–1980 MHz, DL 2110–2170 MHz B8: UL 880–915 MHz, DL 925–960 MHz GSM: B2: UL 1850–1910 MHz, DL 1930–1990 MHz B3: UL 1710–1785 MHz, DL 1805–1880 MHz B5: UL 824–849 MHz, DL 869–894 MHz B8: UL 880–915 MHz, DL 925–960 MHz
Input impedance	50 Ω
Standing wave ratio	< 3
Main antenna efficiency	LTE: B1: -1.5 dB, B3: -2.5 dB, B7: -2.5 dB, B8: -2.5 dB, B20: -2.5 dB, B38: -2 dB UMTS: B1: -1.5 dB, B8: -2.5dB GSM: B5/B8: -2.5 dB, B2/B3: -2.5 dB
Diversity antenna efficiency	LTE: B1: -2.5 dB, B3: -2.5 dB, B7: -2.5 dB, B8: -3 dB, B20: -2 dB, B38: -2 dB UMTS: B1: -2.5 dB
Main antenna gain	LTE: B1/B3/B7/B8/B20/B38: 1~2 dBi UMTS: B1/B8: 1~2 dBi GSM: B5/B8: 1~2 dBi, B2/B3: 1~2 dBi
Diversity antenna gain	LTE: B1/B3/B7/B8/B20/B38: 1~2 dBi
TX/RX	1T2R
Polarization	Linear polarization

2.2.2 Build-in Wi-Fi Antenna

Table 2-3: WLAN 2.4 GHz antenna specifications

Item	Description
Frequency	2.402 GHz – 2.482 GHz (Channel 1 – Channel 13)
Input impedance	50 Ω
Standing wave ratio	< 2
Efficiency	-2 dB
Gain	≤ 3.8 dBi
Polarization	Linear polarization

2.3 Software Specifications

Table 2-4: Software specifications

Item	Description
LTE features	DL 2x2 MIMO DL 64QAM, UL 16QAM
Mobile network	APN management APN auto adapter
Gateway	Router: Supports default route 0.0.0.0, manual LAN IP configuration, and ARP. DHCP server: Can be enabled/disabled, with configurable address pool and lease. DNS relay is supported. NAT: Supports NAT and NAPT (RFC2663, RFC3022, RFC3027) and cone NAT. ARP ICMP IPv4v6 dual stack: IPv6 only (Optional, CLAT for IPv4 device Internet access) or IPv4 only. Note: When CLAT is enabled, IPv4 device Internet access throughput may be limited. NAT-based services like port forwarding are unavailable in IPv6-only mode. VPN pass-through VPN client: Supports L2TP VPN client and PPTP VPN client (Optional). SMS: Supports message writing/sending/receiving and group sending (up to 50 contacts). Data service: LTE FDD: DL 150Mbps, UL 50Mbps DC-HSPA+: DL 42 Mbps, UL 5.76 Mbps HSPA+: DL 21 Mbps (64QAM), UL 5.76 Mbps HSPA: DL 14.4 Mbps, UL 5.76 Mbps WCDMA PS: DL 384 Kbps, UL 384 Kbps EDGE: DL 236.8Kbps, UL 236.8 Kbps GPRS: DL 85.6 Kbps, UL 85.6 Kbps WLAN 802.11b/g/n Supports multi APNs (Optional, for data, voice, and TR-069).
Voice	VoIP (Optional): Supports G.711a/G.711u/G.726/G.722/G.729 codecs, SIP (RFC3261), SDP (RFC2327), RTP/RTCP (RFC1889/RFC1890/RFC3550), and RFC2833 DTMF. Features include Caller ID generation, Call waiting, Call forwarding, Call hold, and Three-way conference. CS: Supports CS voice communication over UMTS and GSM networks, and CSFB. Features include Caller ID generation, Call waiting, Call forwarding, Call hold, and Three-way conference. VoLTE (Optional): Supports AMR-NB/AMR-WB codecs, SRVCC to UMTS/GSM, and RFC2833 DTMF. Features include Caller ID generation, Call waiting, Call forwarding, Call hold, Three-way conference, Originating Identification Presentation/Restriction, and Outgoing Communication Barring.
Firewall setup	Firewall enable/disable, URL filtering, LAN IP filtering, Port forwarding (Virtual server), Port triggering (Special Application), DMZ service, UPnP service, ALG settings.
LAN	10/100/1000 Mbps auto-negotiation, MDI/MDIX auto-sensing, IEEE 802.3/802.3u-compatible.
WLAN	Broadcasts and hides service set identifiers (SSIDs). Complies with IEEE 802.11b/g/n. Supports WPS, WMM. Encryption: WEP, AES, and TKIP + AES. Security modes: Open, WPA2-PSK, WPA/WPA2-PSK, WEP.
MAC address authentication	Supports MAC address authentication whitelist and blacklist. Supports a maximum of 10 MAC address entries.
STA	Supports inquiry of STA status. Supports a maximum of 32 connected stations.
Operator maintenance (Optional)	Supports TR-069 Amendment III, TR-098 Amendment II, TR-143 Amendment I, TR-104 Amendment I (if VoIP is available).
USIM	PIN management and USIM card authentication.
NTP	Supports daylight saving time (DST) (Optional).
Maintenance	Supports export of current diagnosis results and operation logs.
HUAWEI SmartHome APP	View data traffic usage and SMS. Manage connected devices. Change CPE's SSID and password.
System requirements	Operating system: Windows 7, 8, 8.1, 10 (not RT), MAC OS X 10.9-10.12 with latest updates. Web browser: Microsoft Internet Explorer 8.0+, FireFox 49.0+, Chrome (latest versions), Safari 10.0+ (macOS). Your computer's hardware system should meet or exceed the recommended system requirements for the installed OS version.

3 Services and Applications

3.1 Data Services

The B311-221 enables Internet access via mobile networks and Ethernet networks. Connecting via Wi-Fi or a network cable allows users to access high-speed Internet and establish a local area network (LAN).

3.1.1 Accessing the Internet through a Mobile Network (LTE/UMTS/GSM)

The B311-221 can connect to the Internet using mobile networks.

Textual Description of Figure 3-1: Accessing the Internet through a mobile network. This diagram illustrates a mobile network connection. It shows a device (likely a smartphone or tablet) connected wirelessly to a cellular tower icon, which is then connected to the Internet cloud. The HUAWEI B311-221 LTE CPE is depicted receiving the signal from the cellular tower and distributing it wirelessly to other devices like a laptop and a smartphone.

3.1.2 Accessing the Internet through an Ethernet Network

The B311-221's LAN/WAN port can connect to a wall-mounted Ethernet port via a network cable.

Textual Description of Figure 3-2: Accessing the Internet through an Ethernet network. This diagram shows the HUAWEI B311-221 LTE CPE connected via an Ethernet cable to a wall-mounted Ethernet port. The CPE then provides Wi-Fi connectivity to devices like a laptop and a smartphone.

3.2 Voice Services

The B311-221 features one telephone port for connecting telephones for voice calls.

Textual Description of Figure 3-3: Connecting telephones to the B311-221. This diagram shows the back panel of the HUAWEI B311-221 LTE CPE with its ports. A telephone is shown connected to the phone port (RJ11).

3.3 SMS

The B311-221 supports message writing, sending, receiving, and group sending (up to 50 contacts simultaneously).

3.4 Security Service

The B311-221 offers comprehensive security features, including a firewall and PIN protection, to safeguard connected computers against Internet threats.

3.4.1 Firewall Service

The B311-221 allows enabling or disabling a firewall to protect the device and network from unauthorized access and control Internet access.

3.4.2 MAC Filtering

The B311-221 supports Media Access Control (MAC) address configuration to restrict network access.

3.4.3 Wi-Fi Authentication

The gateway supports the following WLAN user authentication protocols: No encryption, WEP, WPA2-PSK (AES), and WPA/WPA2-PSK (TKIP/AES).

3.5 VPN Function

3.5.1 VPN Client

VPN tunneling establishes a logical network connection where packets are encapsulated and transmitted between a VPN client and server. The B311-221 supports L2TP and PPTP tunneling protocols.

Textual Description of Diagram: A network diagram illustrating VPN client functionality. It shows a PC connecting to a HUAWEI B311-221 LTE CPE (labeled as LTE CPE), which then connects to the Internet via an MME, SGW, and PGW. The connection path includes a VPN tunnel established using L2TP/PPTP protocols between the CPE and a VPN Server.

3.5.2 VPN Pass-Through

The B311-221 supports L2TP/PPTP/IPsec VPN pass-through, allowing LAN-side devices to create VPN tunnels to a VPN server.

Textual Description of Diagram: A network diagram illustrating VPN pass-through. It shows a PC (VPN Client) connecting to the HUAWEI B311-221 LTE CPE (LTE CPE). The CPE connects to the Internet through MME, SGW, PGW. The diagram highlights that the VPN tunnel (L2TP, PPTP, IPsec) is established between the LAN device (PC) and the VPN Server, passing through the CPE.

3.6 IP Pass-Through

The LTE CPE obtains the WAN IP address and passes it directly to a connected PC (Case 1) or Router (Case 2), allowing them to use the WAN IP address.

Textual Description of Diagram: Two cases illustrating IP Pass-Through. Case 1 shows a PC connected via RJ45 to the HUAWEI B311-221 LTE CPE, which is connected to the Internet. Case 2 shows a Router connected via RJ45 to the CPE, which is then connected to a PC. Both cases show the CPE passing the WAN IP address to the connected device.

3.7 IPv6 Only and IPv4v6 Dual Stack

3.7.1 IPv4v6 Dual Stack

The CPE provides dual stack functionality, supporting both IPv4 and IPv6.

Textual Description of Diagram: A network diagram illustrating IPv4v6 dual stack. It shows an IPv4-only device and an IPv6-only device connecting to the HUAWEI B311-221 LTE CPE (UE). The CPE connects to the Internet via MME, SGW, PGW, supporting both Internet IPv4 and Internet IPv6 connections.

3.7.2 IPv6 Only (CLAT)

The LTE CPE supports IPv6-only connectivity with the CLAT transition solution for IPv4 devices.

Textual Description of Diagram: A network diagram illustrating IPv6-only connectivity with CLAT. It shows an IPv4-only device and an IPv6-only device connecting to the HUAWEI B311-221 LTE CPE (UE). The CPE uses CLAT to provide IPv4 access for the IPv4-only device over an IPv6 network, connecting to Internet IPv4 and Internet IPv6.

Note: When IPv6-only (CLAT) is enabled, NAT-based functions like DMZ/Port Forwarding/Port Triggering are not available. When an IPv4 device accesses the Internet, performance may degrade due to packetization/unpacking, but IPv6 devices are unaffected.

3.8 Multi-APN

The B311-221 supports the establishment and maintenance of three APNs, isolating data, voice, and remote management services. It also supports an independent APN for CPE internal/VoIP/TR-069.

Textual Description of Diagram: A network diagram illustrating Multi-APN functionality. It shows an LTE CPE connected to an MME, SGW, and PGW, which then connects to the Internet IPv4. The diagram indicates separate APNs for Default APN, VoIP APN, and TR-069 APN, managed by the CPE.

3.9 HiLink

Supports connecting up to two HiLink devices to the B311-221 via the WPS/Hi button to create an expanded network.
Facilitates quick connection between HiLink devices (e.g., Honor set-up boxes, Honor handsets with EMUI 5.0+) and the B311-221 using the WPS/Hi button.

3.10 Customer management

3.10.1 WebUI

The B311-221 supports local configuration and management through its Web User Interface (WebUI), ensuring normal and stable performance.

3.10.2 HUAWEI SmartHome APP

Users can download the HUAWEI SmartHome APP (QR code available in Quick Start Guide and Web UI) to configure the router from their smartphone.

3.11 Operator maintenance

The B311-221 supports operator maintenance via TR-069, allowing remote management of CPE software updates and parameter configuration.

Textual Description of Diagram: A network diagram showing operator maintenance. It depicts an LTE CPE connected to an MME, SGW, and PGW, leading to an Internet IPv4 connection. An Auto-Configuration Server (ACS) is shown connected to the network, facilitating remote management of the CPE.

3.12 HOTA

The B311-221 supports the HOTA (Huawei Firmware Over the Air) feature, enabling remote device firmware updates via the HOTA server.

4 System Structure and Scenario Constraints

4.1 System Architecture

Textual Description of Figure 4-1: System structure. This diagram outlines the system architecture of the HUAWEI B311-221 LTE CPE. It shows an 'Internet' cloud connected to an 'Ethernet access function' and an 'LTE access function'. These functions feed into 'IP route protocol and NAT' and 'WEB management'. The system also includes 'AP function' and 'LAN access function', all converging towards 'Voice function'. Connected devices shown are a Laptop, Computer, and POTS telephone.

The modules shown in Figure 4-1 are described as follows:

LTE access function: Utilizes LTE access technology at the WAN side.
LAN access function: Provides 10/100/1000 Mbps Ethernet ports for local networking and broadband sharing with terminal devices.
AP function: Offers an 802.11b/g/n compliant WLAN AP interface for wireless home networking, supporting WEP, WPA/WPA2-PSK security mechanisms.
DHCP/DNS: Dynamically allocates IP addresses to PCs.
Web-based management: Allows configuration, modification, and viewing of the B311-221's settings.
IP routing protocol and NAT: Provides high-speed routing capability and built-in NAT for flexible broadband access solutions.
Voice function: The B311-221 supports voice services.

4.2 Scenario Constraints

The B311-221 is designed as a household wireless broadband access product for scenarios with fewer network access devices and lower reliability requirements, such as homes or small offices (SOHOs). It is not intended for medium- or large-sized enterprises or high-reliability scenarios like banks or securities agencies.

The B311-221 has the following constraints:

The HOTA function cannot be used when IP Pass-Through mode is enabled.
Enabling the L2TP/PPTP VPN client function may reduce throughput performance.
While the WLAN can theoretically connect up to 32 devices, the actual number served depends on real-world conditions.

5 Technical References

5.1 Standards and Communication Protocols

5.1.1 Standards and Communication Protocols of the Product

Table 5-1: Standards and communication protocols of the product

Item	Description
Physical layer	RFC894
ARP	RFC826
IP	RFC791, RFC1122, RFC1071, RFC1141, RFC1624, RFC792, RFC950, RFC1256
ICMP	RFC792, RFC950, RFC1256
TCP	RFC793
UDP	RFC768
DHCP	RFC1531, RFC1533
NAT	RFC1631, RFC2663, RFC3022, RFC3027
VoIP	RFC3261,RFC2327,RFC1889,RFC1890,RFC3550

5.1.2 Standards and Communication Protocols of the Wireless Uu Interface

This device supports 3GPP Release 9.

6 Packing List

Table 6-1: Packing list

Description	Quantity	Remarks
Wireless Gateway	1	Standard
Power supply adapter	1	Standard
Quick Start	1	Standard
Ethernet cable	1	Optional
Warranty card	1	Optional
Phone cable	1	Optional

The HUAWEI B311-221 wireless gateway has an optional external antenna.

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