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VoIP in Wireless Networks

VoIP in Wireless Networks

VoIP in Wireless Networks. Henning Schulzrinne Andrea G. Forte, Sangho Shin Department of Computer Science Columbia University. VoIP and IEEE 802.11 Architecture. Internet. Router. Router. PBX. 160.38.x.x. 128.59.x.x. AP. AP. Wireless client. VoIP and IEEE 802.11 Problems.

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1.29k views • 91 slides
Towards the Quality of Service for VoIP Traffic in IEEE 802.11 Wireless Networks

Towards the Quality of Service for VoIP Traffic in IEEE 802.11 Wireless Networks

Towards the Quality of Service for VoIP Traffic in IEEE 802.11 Wireless Networks. Sangho Shin PhD candidate Computer Science Columbia University. Internet. IP GW. WIFI. VoIP over WLANs. WIFI. Problems on VoIP in WLANs. User mobility: Handoff. Theater. Stadium. WIFI.

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745 views • 59 slides
CROSS LAYER ASSISTED SIP HANDOVER BASE ON WIMAX

CROSS LAYER ASSISTED SIP HANDOVER BASE ON WIMAX

CROSS LAYER ASSISTED SIP HANDOVER BASE ON WIMAX. Adviser: Ho-Ting Wu Presenter: Chi-Fong Yang Institute of Computer Science and Information Engineering National Taipei University of Technology. OUTLINE. Introduction Media Independent Handover Service Layer 2 Handover Schemes

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732 views • 53 slides
Cooperation in Wireless Networks

Cooperation in Wireless Networks

Cooperation in Wireless Networks. Andrea G. Forte Henning Schulzrinne November 14, 2005. Why Cooperation ? (1/3). Same tasks Layer 2 Handoff Layer 3 Handoff Authentication Multimedia Session Update. Why Cooperation ? (2/3). Same Information Topology (failover) DNS Geo-Location

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331 views • 23 slides
Handoff in IEEE 802.11

Handoff in IEEE 802.11

Handoff in IEEE 802.11. Andrea G. Forte Sangho Shin Prof. Henning Schulzrinne. Handoff - Overview. L2 handoff Connectivity (Scanning, Auth., Assoc.) Fast MAC Layer Handoff Authentication (802.1x, 802.11i) L3 handoff Subnet detection IP address acquisition (DAD) Fast L3 handoff

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327 views • 12 slides

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