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Resource Control in Access Networks

Resource Control in Access Networks. Bert Winkelman, Sven Ooghe, Fred Willems September 2008. Agenda. Introduction The impact of QoS on quality of end-user services Why resource control Resource control Architecture – ITU and ETSI Proposed RAC architecture RAC in the first mile

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Resource Control in Access Networks

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  1. Resource Control in Access Networks Bert Winkelman, Sven Ooghe, Fred Willems September 2008

  2. Agenda • Introduction • The impact of QoS on quality of end-user services • Why resource control • Resource control • Architecture – ITU and ETSI • Proposed RAC architecture • RAC in the first mile • Resource request flow in proposed design • Conclusion

  3. Connection types and Service types - Diversity of Requirements

  4. The impact of QoS on quality of end-user services - Test Configuration

  5. The impact of QoS on quality of end-user services – Test Results

  6. Why resource control? • Bandwidth limitations in first mile, aggregation and core network • Protect quality of established sessions that require QoS treatment • Condition for a satisfactory customer experience for high-bandwidth services on first mile in lower bandwidth bracket ( 5, 10, 20 Mbit/s).

  7. Resource Admission Control – ITU and ETSI architecture

  8. Proposed RAC architecture

  9. RAC Function in the Access Network Connection types to be supported: • Unicast between access node and service node • Multicast between access node and service node • Unicast – Client interacts with Server • Multicast – Client interacts with Access node using IGMP

  10. RAC architecture in the first mile • Central: • Every client must support interaction with RACF • No standards available for session signalling Central or Local? • Local in Access Node: • Access node performs RAC for unicast and multicast connections • Central RAC passes unicast connection requests to Access node through interface with central RAC • No impact on client

  11. Resource Request Flow with Local RAC in the first mile (unicast service)

  12. Conclusion • Resource control is necessary to protect established sessions against service quality degradation • Local RAC in the access node is the recommended solution because: • It is a logical extension of the IGMP based multicast admission control function used in access node today, • Channel zapping delay does not increase, • No impact on customer premises equipment (set-top box, IP phone)

  13. www.alcatel-lucent.com www.alcatel-lucent.com

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