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Resource-Aware Video Multicasting via Access Gateways in Wireless Mesh Networks

Resource-Aware Video Multicasting via Access Gateways in Wireless Mesh Networks. IEEE Transactions on Mobile Computing, Volume 11,Number 6 , June 2012 Authors : Wanqing Tu Sch . of Comput . & Commun . Technol., Glyndwr Univ., Wrexham , UK 

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Resource-Aware Video Multicasting via Access Gateways in Wireless Mesh Networks

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  1. Resource-Aware VideoMulticasting via Access Gatewaysin Wireless Mesh Networks IEEE Transactions on Mobile Computing,Volume 11,Number 6,June 2012 Authors : WanqingTu Sch. of Comput. & Commun. Technol., Glyndwr Univ., Wrexham, UK  IEEEMemberSreenan, C.J. ; Chun Tung Chou ; Misra, A. ; Jha, S.K.

  2. Outline • Introduction • Wireless Mesh Networks • Problem • Two-tier integrated architecture • Link-controlled routing tree • Conclusion

  3. Introduction • Video streaming represents one of the fastest growingsegments of traffic in the Internet today. • Multicasting of video over wireless networks is a challenging problem, due to the combination of high data rates (relative to wireless capacity) and low-latency constraints and the need to support multiple receivers with time-varying link quality.

  4. Wireless Mesh Networks • Wireless mesh networks (WMNs) offer an attractive solution for low-cost connectivity over large urban areas. • A WMN consists of a set of mesh nodes offering connectivity to end user devices; the mesh nodes form a relatively static, multi-hop wireless backbone.

  5. Problem

  6. Problem

  7. Two-tier integrated architecture

  8. Two-tier integrated architecture

  9. Two-tier integrated architecture Uploading Gateway

  10. Two-tier integrated architecture

  11. Link-controlled routing tree

  12. Conclusion • The paper described and studied a resource-aware multi gateway video multicasting framework for WMNs that reduces the negative impacts of multiple wireless hops by judiciously employing high-capacity wired Internet shortcuts. • The two-tier integrated architecture algorithm chooses communication paths—intrameshpaths or integrated paths—between nodes by organizing them into a clustered and layered architecture.

  13. Conclusion • Link-controlled routing tree algorithm decreases interference from parallel multicasting by constructing a multicast tree with the least number of forwarders in each access area

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