Throughput and energy performance of TCP on a wideband CDMA air interface

Zorzi, Michele; Rossi, Michele; Mazzini, G.

doi:10.1002/wcm.34.abs

Cited by 9 publications

(18 citation statements)

References 14 publications

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“…There is well established research in wireless energy efficiency, motivated by the limited power budgets for wireless devices, such as those in sensor nets and ad hoc networks [10,11]. Studies have also looked at how channel conditions and wireless protocols affect power consumption [12]. In comparison, our work focuses on higher speed wired topologies.…”

Section: Network Energy Efficiencymentioning

confidence: 99%

Energy efficient Ethernet encodings

Chen

Wang

2008

2008 33rd IEEE Conference on Local Computer Networks (LCN)

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The energy efficiency of network elements is becoming more prominent, with growing concern for Internet power consumption and heat dissipation in datacenters and communications closets. Previous work has looked at energy efficient wireless topologies, network nodes, routers, and protocols. In considering a fresh redesign of the Internet datacenter for energy efficiency, we believe that energy efficient encodings are worthy of study. In this work, we re-examine the choice of Ethernet encoding, develop an associated energy model, evaluate current encodings, propose new encodings, and identify the desirable features of future encodings. We found that simpler encodings are more energy efficient, with power savings of around 20% for the best encoding. Our work represents a first step in re-examining the established assumptions and practices of the PHY level of the network stack with respect to energy.3

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Section: Network Energy Efficiencymentioning

confidence: 99%

Energy efficient Ethernet encodings

Chen

Wang

2008

2008 33rd IEEE Conference on Local Computer Networks (LCN)

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“…The service area is composed by N c = 9 hexagonal cells, where a base station is placed at the center of each cell and a given number of users are mobile within the coverage area. Propagation phenomena are modeled through standard techniques, by considering log-normal slow fading, fast fading and path loss [4]. A simple power control algorithm has been implemented following the basic algorithm which can also be found in [5].…”

Section: System Under Investigationmentioning

confidence: 99%

Link layer algorithms for efficient multicast service provisioning in 3G cellular systems

Rossi

Zorzi

Fitzek³

IEEE Global Telecommunications Conference, 2004. GLOBECOM '04.

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Abstract-In this work we introduce error control algorithms for multicast delivery in 3G cellular networks. For efficiency reasons, the delivery of multicast flows is usually achieved by allocating a common channel in the forward direction. This enables multiple users to be served by a single physical resource. However, different users are affected by independent channel error processes and new techniques, different from plain ARQ, have to be found to perform error recovery. These new algorithms are needed to deliver the multicast flow in an efficient manner and to enable a reliable, performant and network operator inexpensive multicast service. In the paper different hybrid ARQ algorithms for the error recovery of multicast flows over common channels are proposed and their performance is evaluated both analytically and by simulation. The proposed solutions have been found to be effective and advantageous over plain ARQ techniques. At the end of the paper, results on the achievable video quality are reported for the multicast video streaming case by considering the H.263 video coding format.

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“…Propagation phenomena are modeled through standard techniques, by considering log-normal slow fading, fast fading and path loss [2]. A simple power control algorithm has been implemented following the basic algorithm which can also be found in [3], i.e., the downlink transmitted power is dinamically varied by a constant multiplicative increase/decrease factor (∆ = 0.5 dB) to track a target SIR value (SIR th ).…”

Section: System Under Investigationmentioning

confidence: 99%

Investigation of link layer algorithms and play-out buffer requirements for efficient multicast services in 3G cellular systems

Rossi

Zorzi

Fitzekt³

2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)

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Abstract-The success of 3G networks depends on the possibility to attract customers to this new technology. Therefore, new services using the spectrum in an efficient manner while satisfying the customers are needed. In this paper we introduce link layer algorithms that are suitable for multicast transmission in 3G cellular systems and we present their impact on video application in terms of play-out buffer requirements. By our approach we show that Hybrid ARQ solutions can be succesfully employed to perform error control in the multicast transmission case. Using these schemes, performance can be increased thereby increasing system capacity and lowering the cost per served user. In the final part of the paper, these solutions are extended for the important multicast video streaming case, where new schemes are devised to avoid the throughput inefficiencies of fully reliable error recovery agorithms.

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Throughput and energy performance of TCP on a wideband CDMA air interface

Cited by 9 publications

References 14 publications

Energy efficient Ethernet encodings

Energy efficient Ethernet encodings

Link layer algorithms for efficient multicast service provisioning in 3G cellular systems

Investigation of link layer algorithms and play-out buffer requirements for efficient multicast services in 3G cellular systems

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