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Congestion in today's mobile networks is mainly managed by end to end congestion control algorithms such as TCP. However, in spite of its many merits, TCP does not cope well with the high variability inherent to radio links and customer experience may sometimes be poor as TCP reveals unable to rapidly grasp such a fluctuating bandwidth. To remedy this problem, we introduce in this paper a new proposal...
Many applications nowadays use HTTP. HTTP/2, standardised in February 2015, is an improvment of HTTP/1.1. However it is still running on top of TCP/TLS and can thus suffer from performance issues, such as the number of RTTs for the handshake phase and the Head of Line blocking. Google proposed the QUIC (Quick UDP Internet Connection) protocol, an user level protocol, running on top of UDP, to solve...
Apart from its tremendous enhanced transfer performances, the LTE/EPC mobile network is intended to distinguish itself from previous mobile technologies as an all-IP system. Nevertheless, far from usual IP QoS management policies, its QoS model inherits many characteristics of circuit oriented model of legacy standards. Additional signalling procedures are required in order to establish an end-to-end...
Mobile operators are today facing the daunting challenge of providing cheap and valuable services to ever more demanding customers. As a matter of fact, mobile standards have not yet really addressed this expectation of open, cheap and flexible web oriented internet access. As an alternative, we introduced an IP-centric QoS model mainly inspired by IP policies commonly found in fixed networks. In...
LTE/EPC is an all-IP mobile system which provides higher data rates and lower latency. Nevertheless guaranteeing the QoS is a real challenge since the LTE/EPC QoS model inherits many characteristics of circuit oriented legacy standards. Contrary to usual QoS models of the fixed internet (IP networks), additional signalling procedures are required in order to establish a dedicated bearer for each desired...
The mobile ecosystem is currently facing tremendous changes; in particular, the actual deployment of 4G will probably not be sufficient to totally fit the upcoming mobile data traffic explosion. This mismatch may be explained by the low marginal revenues expectable from mobile data compared to huge investments it requires. Consequently, congestion may appear soon in radio access networks, thus degrading...
Mobile data traffic has exploded over the last few years, especially with the introduction of smart phones in conjunction with increased capacity of mobile networks (HSDPA, LTE). It is commonly admitted that this continuous growth of traffic will induce congestion on the radio segment, usually considered as the bottleneck of the mobile chain. QoS mechanisms adapted to the radio segment are then potentially...
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