2. Outline
• Network Evolution
• What is 4G LTE
• What is FDD & TDD Technologies
• 4G Network Architecture
• LankaBell 4G Network details
• Where to place your router
6. Requirements of LTE
• Peak data rate
– 100 Mbps DL/ 50 Mbps UL within 20 MHz bandwidth
• Less than 5ms user-plane latency
• Mobility
– Optimized for 0-15 km/h
– 15-120 km/h supported with high performance
– Supported up to 350 km/h or 500 km/h
• Spectrum flexibility
• Enhanced support for end-to-end QoS
7. Factors in Real Life
• Handset Capability
• Cell Loading
• License Spectrum
• Radio Conditions
• Network Policy
• Neighbor Interferences
10. Frequency Division Duplex
Advantages of FDD Systems
• Simultaneous and
continuous UL and DL
transmission
• Immunity to system
interference
• Ease of network planning
Disadvantages of FDD
Systems
• Fixed channel allocation
• Guard Band
• Higher hardware costs
11. Time Division Duplex
Advantages of TDD Systems
• Flexible bandwidth
allocation for UL and DL
• Channel reciprocity leads
to better use of multiple
antenna systems
• Lower hardware costs
Disadvantages of TDD
Systems
• Interference problems
• Inter-operator
interference
• Guard intervals
13. Fourth Generation (4G) Network Architecture
Internet
CPE
eNodeB
MME
PDN GWS GW
PCRF
eNodeB
HSS
IP Network
- IMS
- Internet
- Apps
Enhanced Packet Core (EPC)E-UTRAN
14. Key Components and Technologies in 4G LTE
• MIMO (Multiple Input Multiple Output)
– It permits parallel streams to be transmitted
simultaneously by antenna
15. Key Components and Technologies in 4G LTE
• New Access scheme
– OFDMA for Downlink
– SC-FDMA for Uplink
16. Key Components and Technologies in 4G LTE
• Higher-Order Modulation
2 bits/symbol 4 bits/symbol 6 bits/symbol
64QAM allows more bits
Per symbol to transmitted
Higher peak rate achieved in
Good channel condition
17. Key Components and Technologies in 4G LTE
• HARQ (Hybrid Automatic Repeat Request)
– An effective combination of ARQ and FEC
– Reliable
– High efficient error-correcting system
18. Key Components and Technologies in 4G LTE
• SON (Self Organization Network)
– Self configuration
• eNB will by itself configure the Physical Cell Identity,
transmission frequency and power, leading to faster cell
planning and rollout.
– Automatic Neighbor Reuse (ANR)
• configures the neighbouring list in newly deployed eNBs and
is optimizing the list configuration during operation.
– Mobility Robust Optimization (MRO)
• solution for automatic detection and correction of errors in
the mobility configuration.
21. Lamp Site (Indoor Solution)
LampSite is a Huawei-developed leading
in-depth coverage solution. This solution
adopts BBU+RRU architecture, of which
the base station consists of a baseband
processing unit (BBU), pico remote radio
unit (pRRU), and RRU HUB (RHUB).
22. Advantages of LTE
• High throughput: High data rates can be achieved in both downlink as well as uplink. This
causes high throughput.
• Low latency: Time required to connect to the network is in range of a few hundred
milliseconds and power saving states can now be entered and exited very quickly.
• FDD and TDD in the same platform: Frequency Division Duplex (FDD) and Time Division
Duplex (FDD), both schemes can be used on same platform.
• Superior end-user experience: Optimized signaling for connection establishment and other
air interface and mobility management procedures have further improved the user
experience. Reduced latency (to 10 ms) for better user experience.
• Seamless Connection: LTE will also support seamless connection to existing networks such as
GSM, CDMA and WCDMA.
• Plug and play: The user does not have to manually install drivers for the device. Instead
system automatically recognizes the device, loads new drivers for the hardware if needed,
and begins to work with the newly connected device.
• Simple architecture: Because of Simple architecture low operating expenditure (OPEX).
23. Lanka Bell 4G network details
• 194+ eNodeBs are available
• 25,000 Active subscribers
• Operates in band 40
• Operating frequency is 2.3 GHz
(2.360GHz – 2.385GHz)
• 300+ More eNodeBs to come
24. Customer-Premises Equipment Huawei B880
• Wi-Fi 802.11 b/g/n
• CAT4 150Mbps
• Maximum Wi-Fi connected user 32
• Firewall/ DDNS/ SIP
Huawei B880 Front Huawei B880 Back
25. Introduction to Huawei B880
1. Power Indicator
2. Network Mode Indicator
3. Wi-Fi/WPS Indicator
4. Wireless Dialing Indicator
5. LAN/WAN Indicator
6. Signal strength indicator
26. Introduction to Huawei B880
7. External Antenna Port
8. WPS Button
9. Power Button
10. LAN Port
11. WAN Port
12. USB Port
13. Telephone Port
14. Power Port
15. Reset Button
16. SIM card slot
27. Installation
• Installing the SIM card
1. Slide off the card slot
cover.
2. Insert the SIM card into
the card slot. Ensure that
the beveled edge of the
SIM card aligns with that
of the card slot.
3. Close the card slot cover.
34. Installation
• Installing the SIM card
1. Slide off the card slot
cover.
2. Insert the SIM card into
the card slot. Ensure that
the beveled edge of the
SIM card aligns with that
of the card slot.
3. Close the card slot cover.
37. Setting up a Wi-Fi connection
The default SSID and Wi-Fi key are printed on the
B310's bottom label
38. Technical Facts
• Requirements for a proper connection
– RSRP level (-110dBm)
– SINR level (>= 5dB)
• Common issues
– Full signal level but no throughput
39. LTE Device Access and Login
• Step 1 Make sure your LTE Device hardware is properly connected.
• Step 2 Launch your web browser.
• Step 3 Type "192.168.1.1" as the URL.
• Step 4 A password screen displays. Type "admin" as the default
Username and “admin" as the
default password to access the device's Web Configurator. Click
Login. If you have changed
the password, enter your password and click Login.
Note : For security reasons, the LTE Device automatically logs you out if
you do not use the web configurator for five minutes (default). If this
happens, log in again.
42. Diagnostic & Troubleshoot
• Power, Hardware Connections, and LEDs
– The LTE Device does not turn on. None of the LEDs turn on
– One of the LEDs does not behave as expected.
• LTE Device Access and Login
– Forgot the IP address for the LTE Device
• Internet Access
– Cannot access the Internet
• Wireless Internet Access
• Phone Calls and VoIP
