Bell4GLTE
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The document discusses next generation wireless networks and 4G LTE technology. It provides details on: 1) The requirements of 4G LTE including peak data rates of 100Mbps download and 50Mbps upload, latency under 5ms, mobility support up to 350km/h, and enhanced quality of service. 2) The differences between Frequency Division Duplex (FDD) and Time Division Duplex (TDD) technologies. FDD allows simultaneous upload and download while TDD allows flexible bandwidth allocation. 3) Key components of 4G LTE networks including MIMO, OFDMA, and higher order modulation to achieve higher data rates.
Bell4GLTE
- 1. Next Generation Wireless Network By Ishuranga Wijesinghe
- 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
- 4. Data Rates
- 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
- 8. What is FDD & TDD
- 9. What is FDD & TDD
- 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
- 12. TDD LTE Bands & Frequencies LTE BAND NUMBER ALLOCATION (MHZ) WIDTH OF BAND (MHZ) 33 1900 - 1920 20 34 2010 - 2025 15 35 1850 - 1910 60 36 1930 - 1990 60 37 1910 - 1930 20 38 2570 - 2620 50 39 1880 - 1920 40 40 2300 - 2400 100 41 2496 - 2690 194 42 3400 - 3600 200 43 3600 - 3800 200 44 703 - 803 100
- 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.
- 19. eNodeB
- 20. Base Band Unit (BBU)
- 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.
- 30. Setting up a Wi-Fi connection The default SSID and Wi-Fi key are printed on the B880’s back label
- 31. Customer-Premises Equipment Huawei B310 Huawei B310 Front Huawei B310 Back • Wi-Fi 802.11 b/g/n • CAT4 150Mbps • Maximum Wi-Fi connected user 32 • Firewall/ DDNS/ SIP
- 32. Introduction to Huawei B310s-925
- 33. Introduction to Huawei B310s-925
- 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.
- 40. Introducing the Web Configurator
- 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
- 43. Troubleshooting Steps Step-1 Indicator lights Step-2 Physical damages Step-3 Wifi or LAN connectivity Step-4 Device states Step-5 4G network connectivity
- 44. Indicator Lights • Power • SIM card states • Wifi states • Internet connectivity states • LAN states • 4G signal states
- 45. Physical Damages • Check whether antenna has damaged. • Check whether SIM card has damaged. • Check whether SIM slot working properly. • Check power adaptor. • Check warranty sticker on device.
- 46. Wi-Fi or LAN Connectivity • Check whether IP has configured correctly. • Check network connection on user PC/Laptop.
- 47. Device States
- 48. 4G Connectivity • Use ping command to check the connectivity. ping 8.8.8.8 –t • Use Speed Test – www.speedtest.net or – Mobile Application
- 51. Finally…