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NGN Architecture/Layer description and NGN Future Trends

Future Technologies in Core Network. NGN Architecture/Layer description and NGN Future Trends. The telecom network is undergoing extensive changes to meet new market and service demands. NGN Architecture. Characteristics of Next Generation Network:

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NGN Architecture/Layer description and NGN Future Trends

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  1. Future Technologies in Core Network NGN Architecture/Layer description and NGN Future Trends The telecom network is undergoing extensive changes to meet new market and service demands.

  2. NGN Architecture Characteristics of Next Generation Network: • NGN is designed with an open network framework. • NGN adopts the hierarchical architecture, which is divided into media access layer, transport layer, control layer and service/application layer. • NGN is based on standard protocols and packet switching network.

  3. NGN Hierarchical Architecture Service/Application Layer Service Management Control Layer Network Control Transport Layer Core Switch Edge Access Media Access Layer

  4. Access Layer • Interworks between Core Packet Transport layer and various existing communication networks. • Provides access of various communication terminals such as analog phone, SIP Phone, PC Phone visual terminal and intelligent terminals to the Core Packet Transport layer via various access gateways

  5. Core Transport Layer The packet switching network composed of backbone transmission equipment's such as IP router or broadband ATM switch as the bearer basis of the softswitch system.

  6. NGN Control Layer • The control Layer combines the equipment that manages signaling and call control progress. • The control handles the call setup and controls the media gateways. • Major components at this layer are the soft-switches.

  7. Application Layer • Layer with various applications and services such as client oriented integrated intelligent services and service customization.

  8. Policy Application RADIUS Location MRS SCP iOSS Server Server Server Server Soft Switch Soft Switch Packet Core Network IAD AMG SG TMG UMG UMG BroadBand PSTN PLMN/3G Access NGN Network Architecture Service Management Network Control Core Switching Edge Access iOSS: Intelligent network management system, SCP: Service Control Point , MRS: Media Resource Server, IAD: Integrate Access Device, AMG: Access Media Gateway, TMG: Trunk Media Gateway, UMG: Universal Media Gateway, RADIUS: Remote Authentication Dial-In-User Services

  9. ENIP MRS6100 OSS Policy Server Location Server IN switch STP PSTN Huawei U-SYS Network Architecture iManager N2000 Service Layer Control Layer SoftX3000 SoftX3000 IP Core Video GW Core Switch Layer 3G Access IAD UMG8900 AMG5000 Broadband Access SG7000 Access Layer UMG8900 UMG8900 PSTN PLMN SIP/H.323 Phone U-Path Open Eye 2G Terminal 3G Terminal

  10. ZXUP10 APP SCP Router Server AAAServer Application Server PolicyServer Service ZXSS10 SS1 ZXSS10 SS1 Control Softswitch Softswitch IP Router/ATM switch Core Packet Network Core Transport ZXSS10 M100 TG ZTE NGN Architecture ZXSS10 S100 ZXSS10 A200 ZXSS10 IAD Series NAS AG SG H323 GW IP PBX MSAG IAD WAG Access Wireless Broadband Access PSTN/ISDN SS7 Network NAS: Network Access Server WAG: Wireless Access Gateway MSAG: Multi Service Access Gateway AG: Access Gateway

  11. Softswitch APP NMS PSTN IP Core SG TG PSTN Access APP: APP Server: Application Server, TG: Trunk gateway SG: Signaling Gateway, NMS: Network Management system

  12. NMS Next Generation Network -Future ENIP APP Server 3rd Party Convergence Broadband Intelligence User Profile Center Softswitch Resource Manager Signaling GW Resource Manager SS7/TDM Multi Service Edge Route IP Core Network Multi Service Edge Route PSTN Metro Optical Backhaul SS7/V5.2/TDM Media GW XDSL/LAN/POTS MSAN LAN IAD AP AP Softphone Softphone Internet SIP Phone POTS IPTV SipPhone POTS FMC Residential Enterprise Mobile Scenario ENIP: Enhanced Network Intelligent Platform, NMS: Network Management system, AP: Access Point MSAN: Multi Service Access Node, FMC: Fixed Mobile Convergence, MG: Media Gateway

  13. NMS Convergence-oriented Centralized user profile center and application layerfor service convergence and fast service deployment ENIP User Profile Center Softswitch Convergence Shared converged IP network for voice, data and mobile IP Core Network Metro Optical Backhaul XDSL/LAN/POTS MSAN LAN Unified multi-service access node for diversified services, decreasing the number of access node, AP IAD AP Softphone Softphone SIP Phone Internet POTS IPTV SipPhone POTS FMC Enterprise Residential From multi-network to multi-service Network

  14. NMS Broadband-oriented ENIP Softswitch User Profile Center Constructing high QoS network with large bandwidth IP Core Network Broadband Metro Optical Backhaul Broadband XDSL/LAN/POTS Introduce various broadband access methods to support broadband service deployment LAN MSAN IAD AP AP SIP Phone Softphone Softphone Internet IPTV SipPhone FMC POTS POTS Enterprise Residential From Narrowband to Broadband

  15. NMS Intelligence-oriented • Centralized user profile center, session control and application layer • Bring intelligence to whole network • Support fast unified service deployment APP Server ENIP 3rd Party Intelligence User Profile Center Softswitch IP Core Network Metro Optical Backhaul Broadband XDSL/LAN/POTS LAN MSAN IAD AP AP Softphone SIP Phone Softphone Internet IPTV SipPhone POTS POTS Enterprise Residential From Intelligent Network to Network Intelligence

  16. Future Technologies in Access Network/Fixed Line • Fixed network - ultra-fast broadband • From copper to fiber optics • Not only the Internet, but also television and telephony are becoming increasingly IP-based. • Bigger screens and higher resolutions mean increasingly large quantities of data. • developing the latest technologies, such as Fibreto the Street (FTTS), is the solution to meet the growing need for bandwidth. • In the future, these technologies will be able to offer bandwidths of up to 100 Mbit/s, rising to 500 Mbit/s or more within a few years. • Fibre-optic network Into the home (Fiber to the x (FTTX)) • bringing fibre optics all the way into homes and businesses – • The fibre-optic cables have an almost unlimited data transmission capacity. 

  17. Optical Fiber Fiber to the x (FTTX) • is a generic term for any broadband network architecture using optical fiber to provide all or part of the local loop used for last miletelecommunications. The term is a generalization for several configurations of fiber deployment, ranging from FTTN (fiber to the neighborhood) to FTTD (fiber to the desktop).

  18. FTTX architectures vary – with regard to the distance between the optical fiber and the end-user. • The building on the left is the central office; the building on the right is one of the buildings served by the central office. Dotted rectangles represent separate living or office spaces within the same building.

  19. The telecommunications industry differentiates between several distinct FTTX configurations. • FTTN / FTTLA (fiber-to-the-node, -neighborhood, or -last-amplifier): Fiber is terminated in a street cabinet, possibly miles away from the customer premises, with the final connections being copper. FTTN is often an interim step toward full FTTH and is typically used to deliver advanced triple-play telecommunications services. • FTTC / FTTK (fiber-to-the-curb/kerb, -closet, or -cabinet): This is very similar to FTTN, but the street cabinet or pole is closer to the user's premises, typically within 1,000 feet (300 m), within range for high-bandwidth copper technologies

  20. FTTP (fiber-to-the-premises): This term is used either as a blanket term for both FTTH and FTTB, or where the fiber network includes both homes and small businesses. • FTTB (fiber-to-the-building, -business, or -basement): Fiber reaches the boundary of the building, • FTTH (fiber-to-the-home): Fiber reaches the boundary of the living space, such as a box on the outside wall of a home. Passive optical networks and point-to-point ethernet are architectures that deliver triple-play services over FTTH networks directly from an operator's central office.[1][2] • FTTD (fiber-to-the-desktop): Fiber connection is installed from the main computer room to a terminal.

  21. Future Technologies and Challenges in Mobile Networks

  22. Cellular Network Generations • It is useful to think of cellular Network/telephony in terms of generations: • 0G: Briefcase-size mobile radio telephones • 1G: Analog cellular telephony • 2G: Digital cellular telephony • 3G: High-speed digital cellular telephony (including video telephony) • 4G: IP-based “anytime, anywhere” voice, data, and multimedia telephony at faster data rates than 3G (to be deployed in 2012–2015)

  23. Evolution of Cellular Networks 1G 2G 2.5G 3G 4G

  24. 4G Definition • 4G is not one defined technology or standard, but rather a collection of technologies at creating fully packet-switched networks optimized for data. • 4G Networks are projected to provide speed of 100Mbps while moving and 1Gbps while stationary.

  25. 0G (Zero Generation Mobile System) • At the end of the 1940’s, the first radio telephone service was introduced, and was designed to users in cars to the public land-line based telephone network. • In the 1960’s, a system launched by Bell Systems, called, Improved Mobile Telephone Service (IMTS), brought quite a few improvements such as direct dialing and more bandwidth. The very first analog systems were based upon IMTS and were created in the late 60s and early 70s.

  26. 1G Technology • 1G refers to the first-generation of wireless telephone technology was developed in 1970’s. • 1G had two major improvements: • the invention of the microprocessor • the digital transform of the control link between the phone and the cell site. • Analog signal • Continuous in amplitude and time • Variations in the signal- disrupts over long distances

  27. 1G Technology • Simplest type to wireless data • Average between 4800 to 9600 bps • Advanced mobile phone system(AMPS) launched by the US is a 1G mobile system • 1G is based on FDMA, it allows users to make voice calls in one country

  28. Problems with 1G Technology • Poor Voice Quality • Poor Battery Life • Phone Size big • No security • Frequent Call drops • Limited Capacity • Poor Hand off reliability

  29. 2G Technology • Second generation 2G phones using global system for mobile communications ( GSM) developed in early 1980’s. • First used in the early 1990’s in Europe • Better quality & capacity - More people could use there phones at the same time • Digital Signals – consist of 0’s & 1’s

  30. Previous Technology - 2G • GSM provides voice and limited data services. • Uses Digital modulation for improved audio quality • Digital signal: – consist of 0’s and 1’s • 1.Low level, 2.High level, 3.Rising edge and 4.Falling edge

  31. Previous Technology - 2G • Digital data can be compressed and multiplexed much more effectively than analog voice encodings • Multiplexing -multiple analog message signals or digital data streams are combined into one signal • For 1 and 2G standards, bandwidth maximum is 9.6 Kbit/sec,

  32. Disadvantages in Previous Technology - 2G • Need to improve transmission quality • Cell towers had a limited coverage area • Abrupt dropped calls • Unable to support complex data such as Video • Limited System capacity • “Spotty” coverage

  33. 3G Technology • 3G networks provide the ability to transfer voice, data and non voice data ( music downloads, emails and instant messaging) over the same network simultaneously. • Delivers broadband capacity and support greater numbers of voice and data customers at lower incremental costs than 2G.

  34. Technology - 3G • Standards: W-CDMA –Wideband Code Division Multiple Access EVDO: Evolution-Data Optimized The idea behind is to have a single network standard instead of the different types adopted in US, europe and Asia.

  35. Advantages: • Less Complexity, Faster Transmission • Large Capacity and broadband capabilities • Allows the transmission of 384kbps for mobile systems and up to 2Mbps for stationary users • Increased spectrum efficiency –5Mhz • A greater number of users that can be simultaneously supported by a radio frequency bandwidth • High data rates at lower incremental cost than 2G–Global roaming

  36. Reasons for New Research • Even though 3G has successfully been introduced to mobile users, there are some issues that are debated by 3G providers and users. • High input fees for the 3G service licenses • Great differences in the licensing terms • 3G phones are expensive • High bandwidth requirement • Huge Capital

  37. Fourth Generation

  38. What is 4G? • Fourth Generation Technology • 4G, the successor of 3G • 4G Technology or mobile comm systems that are characterized by high-speed data rates at 20 to 100 Mbps, suitable for high resolution movies and television, virtual initial deployment took place in 2006 to 2010

  39. Faster and more reliable • 100 Mb/s • Lower cost than previous generations • Multi-standard wireless system • Bluetooth, Wired, Wireless • OFDM used instead of CDMA

  40. High Speed Circuit Switched Data Dedicate up to 4 timeslots for data connection ~ 50 kbps Good for real-time applications c.w. GPRS Inefficient -> ties up resources, even when nothing sent Not as popular as GPRS (many skipping HSCSD) Enhanced Data Rates for Global Evolution Uses 8PSK modulation 3x improvement in data rate on short distances Can fall back to GMSK for greater distances Combine with GPRS (EGPRS) ~ 384 kbps Can also be combined with HSCSD GSM 9.6kbps (one timeslot) GSM Data Also called CSD (Circuit Switched Data) HSCSD GSM GPRS WCDMA General Packet Radio Services Data rates up to ~ 115 kbps Max: 8 timeslots used as any one time Packet switched; resources not tied up all the time Contention based. Efficient, but variable delays GSM / GPRS core network re-used by WCDMA (3G) EDGE GSM Evolution to 3G

  41. UMTS • Universal Mobile Telecommunications System (UMTS): a case of 3G which uses WCDMA • UMTS is an upgrade from GSM via GPRS or EDGE • The standardization work for UMTS is carried out by Third Generation Partnership Project (3GPP) • Data rates of UMTS are: • 144 kbps for rural • 384 kbps for urban outdoor • 2048 kbps for indoor and low range outdoor

  42. 3.5G (HSPA) High Speed Packet Access (HSPA) is an amalgamation of two mobile telephony protocols, High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA), that extends and improves the performance of existing WCDMA protocols 3.5G introduces many new features that will enhance the UMTS technology in future.

  43. 4G (LTE) • LTE stands for Long Term Evolution • Next Generation mobile broadband technology • Promises data transfer rates of 100 Mbps • Based on UMTS 3G technology • Optimized for All-IP traffic

  44. Advantages of LTE

  45. Comparison of LTE Speed

  46. MobiHoc '10 Context Evolved hardware technologies + Improved network bandwidth = Entertainment apps on mobile

  47. MobiHoc '10 Context Millions of passengers per day!

  48. MobiHoc '10 Context HSPA can provide the same level of service to mobile users on public transport pictures’ source: Wikipedia

  49. Compare 3G & 4G ( Video) • Comparison of 3G and 4G • 3G: • --Back compatible to 2G. • --Circuit and packet switched networks. • --Combination of existing & evolved equipment. • --Data rate (up to 2Mbps). • 4G: • --Extend 3G capacity. • --Entirely packet switched networks. • --All network elements are digital. • --Higher bandwidth (up to 100Mbps) enables a range of new applications. • Lower costs than previous generations • Faster and more reliable

  50. Why 4G (Video) For the consumer • Video Streaming • TV broadcast • Video Clips • News • Music • Sports enhanced gaming • Chat • Location services-GPS • Life saving- Telemedicine

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