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Kommunikatsiooniteenuste arendus IRT0080

Kommunikatsiooniteenuste arendus IRT0080. Loeng 3 Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst. avo.ots@ttu.ee. 10% BsBW. 10% BsBW. 10%BsBW. e2e Tbps throughput. e2e Gbps throughput. e2e kbps t hroughput. Arvuti- ja kommunikatsioonijõudlus. Petascale

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Kommunikatsiooniteenuste arendus IRT0080

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  1. Kommunikatsiooniteenuste arendusIRT0080 Loeng 3Avo Otstelekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst.avo.ots@ttu.ee

  2. 10% BsBW 10% BsBW 10%BsBW e2e Tbps throughput e2e Gbps throughput e2e kbps throughput Arvuti- ja kommunikatsioonijõudlus Petascale Computing Capacity Units 10e15 • Pflops • Ebytes Terascale Computing 10e12 • Tflops • Pbytes Gigascale Computing Tbps Backbone • Gflops • Gbytes 10e09 Gbps Backbone 10e06 Mbps Backbone 1995 2000 2005 2010

  3. Võrgukihi kommutaator

  4. PBX Transformation Telephony Server PBX

  5. Echo control Dejittering delay Packet size Header compression Codec Efficiency of transport Voice quality Efficiency & quality

  6. Kõne pakettvõrgus • Kõnesignaali komprimeeriv koodek (ITU-T G.729A, 8 kbit/s) • VAD (Voice Activity Detection), Silence Suppression , Comfort Noise Generation • Töödeldava lugemikogumi pikkus: 20 ms, =>Payload 20 octets Ethernet+FCS+Preamble: 26 bytes802.1q VLAN Tagging 4 bytesIP: 20 bytesUDP: 8bytes RTP: 12 bytes Voice Payload: 20 bytes----------90 bytes

  7. Paketiülekande hinnangud

  8. ENUM DNS-A (9.1.9.1.e164.arpa) DNS-B (0.5.8.9.1.9.1.e164.arpa) Query 0.0.5.5.0.5.8.9.1.9.1.e164.arpa Query 0.0.5.5.0.5.8.9.1.9.1.e164.arpa Authority = DNS-B Answer = sip:niel@proxy.com proxy.com INVITE INVITE “(919) 850-5500"

  9. TCP: guarantee: deliver all data; no guarantee: rate, delay; connection; congestion control UDP: no guarantee: deliver all data, order, delay; no connection; no congestion control

  10. WLAN Virtual Reality Ad hoc networks xMbps @ 60 GHz EDGE TDMA Always Best Connected Always Best Connected GSM GPRS WCDMA PDC New air-interface? Optical Networking cdma2000 Bluetooth MC1X cdmaOne 4G 2G evolved 2G 3G evolved 3G 384 kbps - 2 Mbps 384 kbps - 20 Mbps 9.6 - 14.4 kbps 64–144 kbps Areng 100 Mbps?

  11. High-end Datacom users Mobility Processing capacity User interface, e.g. screen-size Mobiilsus

  12. On campus In the city Home or school TODAY In the office In the car Portable • Wi-Fi & WiMAX & Cellular Portable • Wi-Fi &WiMAX Stationary • Wi-Fi Portable • Wi-Fi &WiMAX Seamless roaming among wireless networks Connectivity

  13. In a converged network, services will no longer be tied to a one type of network. Instead, the converged network will deliver all services. Current Future Network paradigm shift

  14. home agent Internet w/ Mobile IP mobile access network base station mobile Mobiilsus

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