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Transport requirements and solutions on the wireless link

Transport requirements and solutions on the wireless link. Suzana Stavrov Grujev KPN Research s.grujev@research.kpn.com. Agenda. Task description and its objectives Main topics Future Work. Task description and its objectives.

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Transport requirements and solutions on the wireless link

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  1. Transport requirements andsolutions on the wireless link Suzana Stavrov Grujev KPN Research s.grujev@research.kpn.com

  2. Agenda • Task description and its objectives • Main topics • Future Work Task 2 / S. Stavrov-Grujev

  3. Task description and its objectives • Efficient and flexible way of handlingbroadband services on the wireless link • Learn how to implement ATM trafficon the wireless link • Fixed Wireless Access • Mobile Networks (especially UMTS) • Radio LAN • Influence the standard bodieswhere appropriate • ATM Forum • ETSI BRAN Task 2 / S. Stavrov-Grujev

  4. Main topics • Physical layer • MAC protocol • Security • Wireless CAC Task 2 / S. Stavrov-Grujev

  5. Physical layer • Modulation (OFDM, …) • Coding (turbo codes, …) • Dynamic Channel Allocation • Automatic Frequency Assignment Scenario dependent Task 2 / S. Stavrov-Grujev

  6. MAC Protocol • Frame definition • Frame length (impact on QoS) • Random Access scheme • Scheduling • impact of QoS of ATM classes • ARQ techniques • granularity of resource request and grants • three ways of granting Task 2 / S. Stavrov-Grujev

  7. Wireless CAC • Rate Envelope Multiplexing • Rate Sharing • Establish at • connection set-up • handover procedure • During handover • renegotiations of QoS • call drop probability Task 2 / S. Stavrov-Grujev

  8. Quality of Service Control • Imposes several constraints to resource management • Wireless ATM management • initial QoS negotiation • degradation due to • varying resource availability • link quality • relaxation and renegotiations during handover • “Mobility - aware application” • W-IP and QoS Task 2 / S. Stavrov-Grujev

  9. Ongoing work • Resource reservation and management • Physical MAC-layer evaluation • Frequency assignment • Scheduling paradigm • Security • Different modes over same generic radio interface • Wireless ATM • Wireless IP • UTRA Task 2 / S. Stavrov-Grujev

  10. Any Question Task 2 / S. Stavrov-Grujev

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