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ClubADSL: When your neighbors are your friends
Giustiniano, Domenico; Gomà Llairo, Eduard; Morillo Pozo, Julián; López Toledo, Alberto; Rodríguez, Pablo
ADSL is becoming the standard form of residential and small-business broadband Internet access due to, primarily, its low deployment cost. These ADSL residential lines are often deployed with 802.11 Access Points (AP) that providewireless connectivity. Given the density of ADSL deployment, it is often possible for a residential wireless client to be in range of several other APs, belonging to neighbors, with ADSL connectivity. While the ADSL technology has showed evident limits in terms of capacity (with speeds ranging 1-10 Mbps), the short-range wireless communication can guarantee a muchhigher capacity (up to 20 Mbps). Furthermore, the ADSL links in the neighborhood are generally under-utilized, since ADSL subscribers do not connect 100% of the time. Therefore, it is possible for a wireless client to simultaneously connect to several APs in range and effectively aggregate their available ADSL bandwidth.In this paper, we introduce ClubADSL, a wireless client that can simultaneously connect to several APs in range on different frequencies and aggregate both their downlink and uplink capacity. ClubADSL is a software that runs locally on the client-side, and it requires neither modification to the existing Internet infrastructure, nor any hardware/protocol upgradesto the 802.11 local area network. We show the feasibility of ClubADSL in seamlessly transmitting TCP traffic, and validate its implementation both in controlled scenarios and with current applications over real ADSL lines. In particular we show that a ClubADSL client can greatly benefit from the aggregated download bandwidth in the case of server-client applications such as video streaming, but can also take advantage of the increased upload bandwidth greatly reducing download times with incentive-based P2P applications such as BitTorrent.
Comunicació presentada en el Symposium on Computers and Communications (ISCC '09), celebrat els dies 5, 6, 7 i 8 de juliol de 2009 a Sussa (Tunísia), organitzat per l’Institute of Electrical and Electronics Engineers (IEEE).
Alberto López Toledo is supported by the Institució Catalana de Recerca i Estudis Avançats (ICREA). This work was completed while Julián Morillo Pozo was an intern at Telefonica Research.
Comunicació sense fil, Sistemes de
Internet -- Protocols
Xarxes d'àrea local (Xarxes d'ordinadors)
© 2009 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.The final published article can be found at
Institute of Electrical and Electronics Engineers (IEEE)

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