mobisys2007[教程](編輯修改稿)
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【文章內(nèi)容簡介】 ? 0x2fd4e1c6 Authoritative Result 0x31b3887a30f020… ? Evaluation/Results ? Cedar evaluated using MobileSales benchmark – Based on TCPApp – Using EVDO with various data rates ? Cedar improves average throughput of readwrite workloads by 39% 224% ? Reduces average response time by 28% to 79% COMBINE: Leveraging the Power of Wireless Peers through Collaborative Downloading Ganesh Ananthanarayanan, Venkat Padmanabhan, Lenin Ravidranath, Chandu Thekkath (Microsoft Research India) Problem ? Multihomed mobile devices (laptops and phones) are increasingly mon ? How do we bridge the gap between the rangespeed dichotomy of these works? Speed Coverage WLAN (WiFi, Bluetooth) 1 – 54 Mbps WiFi Hotspots WWAN (3G, GPRS) 50 – 200 kbps Cellular Network Solution ? Pool WWAN bandwidths ? Using the WLAN to coordinate between mobile devices ? How? WiFi Inter GPRS HTTP Server COMBINE Approach Initiator Inter GPRS HTTP Server Search for collaborators WiFi or Bluetooth COMBINE Approach Initiator Inter GPRS WiFi HTTP Server Connect to collaborators over WiFi WiFi Initiator Collaborator Collaborator COMBINE Approach Inter GPRS WiFi HTTP Server Dynamically distribute the work WiFi Collaborator Collaborator Initiator COMBINE Approach Existing Work ? Collaboration via WLAN to increase the coverage of the WWAN – UCAN ? Bandwidth Aggregation across WWAN links: – Attached to same device – Horde, MAR, pTCP – Across multiple devices – PRISMIMUX, MOPED, Handheld Routers What’s new in COMBINE? 1. Incentives – Promise of higher
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