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Network Initiated Handovers

Network Initiated Handovers. Telemaco Melia Jouni Korhonen Rui Aguiar. Diff from version -00 in a nutshell. Broader scope (considerations on related work in 3GPP and IEEE) Clear definition of network initiated handover Security considerations added

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Network Initiated Handovers

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  1. Network Initiated Handovers Telemaco Melia Jouni Korhonen Rui Aguiar

  2. Diff from version -00 in a nutshell • Broader scope (considerations on related work in 3GPP and IEEE) • Clear definition of network initiated handover • Security considerations added • More on framework and functional components

  3. Consider aspects of 3GPP and IEEE • In 3GPP 23.882 the radio access network triggers the handover process • In IEEE 802.21 network-to-client and client-to-network events support the network for decision making

  4. Definition of network initiated handover Action taken in the network to initiate the handover based on: • Link events originated in the mobile node: • radio link variations • powering on of new network devices • new service requirements • …. • Events generated in the network: • resource management reasons • Intra and inter technology • Multi homed devices

  5. Issues to consider for NIHO feasibility: • Mobility Application Area: • Efficiency of measurements functions for signal level reports • Location of decision functions (RTT) • Resource Application Area: • Overlapping and Coverage of (different) wireless access technologies

  6. Security Considerations +-+-+-+-+-+ +-+-+-+ | MN/ |-----| AN1 |---+ |EAP Peer | +-+-+-+ | +-+-+-+ +-+-+-+-+-+ +-----|KH 1 |-+ | +-----+ | | | | | +-+-+-+-+-+ +-+-+-+ | | |AAA/EAP | | AN2 |---+ +--+--| Server | +-+-+-+ | +---------+ | +-+-+-+ +-----+ | | AN 3|---------+kH 2 +----+ +-+-+-+ +-+-+-+ draft-nakhjiri-aaa-hokey-ps-01.txt Mobile Operator Home Network MRMH ISP ISP GMP NAP A NAP B NAP B

  7. Framework view • Policy Decision Points • Policy Enforcement Points • Aggregators Components • Measurements Functions

  8. Simulation work supporting NIHO (I) Nodes’ speed : [2,10] m/s 25 APs (250 meters distance) Maximum of 10 MTs per AP Improvement in terms of the number of communications interrupted due to moving into an area with all APs fully loaded Results to appear in: - Special issue on “Scaling the Mobile Internet”, Wireless Communication Magazine - Infocom 2006 demo/poster session

  9. Simulation work supporting NIHO (II) • Proceeding into parallel threads • Analysis of terminal movement speed on measurements reports • Based on IEEE 802.21 design • Results considered to be valid also for alternative solutions • Optimal Location of decision functions • Based on IEEE 802.21 design • Analysis of network coverage area • It has been identified a tradeoff between the coverage overlapping area and NIHO procedures performance

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