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A survey of energy efficient network protocols for wireless networks
- Wireless Networks
, 2001
"... Abstract. Wireless networking has witnessed an explosion of interest from consumers in recent years for its applications in mobile and personal communications. As wireless networks become an integral component of the modern communication infrastructure, energy efficiency will be an important design ..."
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Abstract. Wireless networking has witnessed an explosion of interest from consumers in recent years for its applications in mobile and personal communications. As wireless networks become an integral component of the modern communication infrastructure, energy efficiency will be an important design consideration due to the limited battery life of mobile terminals. Power conservation techniques are commonly used in the hardware design of such systems. Since the network interface is a significant consumer of power, considerable research has been devoted to low-power design of the entire network protocol stack of wireless networks in an effort to enhance energy efficiency. This paper presents a comprehensive summary of recent work addressing energy efficient and low-power design within all layers of the wireless network protocol stack.
Exploring Power-Performance Tradeoffs in Database Systems
"... Abstract — With the total energy consumption of computing systems increasing in a steep rate, much attention has been paid to the design of energy-efficient computing systems and applications. So far, database system design has focused on improving performance of query processing. The objective of t ..."
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Cited by 30 (7 self)
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Abstract — With the total energy consumption of computing systems increasing in a steep rate, much attention has been paid to the design of energy-efficient computing systems and applications. So far, database system design has focused on improving performance of query processing. The objective of this study is to experimentally explore the potential of power conservation in relational database management systems. We hypothesize that, by modifying the query optimizer in a DBMS to take the power cost of query plans into consideration, we will be able to reduce the power usage of database servers and control the tradeoffs between power consumption and system performance. We also identify the sources of such savings by investigating the resource consumption features during query processing in DBMSs. To that end, we provide an in-depth anatomy and qualitatively analyze the power profile of typical queries in the TPC benchmarks. We perform extensive experiments on a physical testbed based on the PostgreSQL system using workloads generated from the TPC benchmarks. Our hypothesis is supported by such experimental results: power savings in the range of 11 %- 22 % can be achieved by equipping the DBMS with a query optimizer that selects query plans based on both estimated processing time and power requirements. I.
Performance Comparison of Battery Power Consumption in Wireless Multiple Access Protocols
, 1999
"... this paper addresses energy efficiency in medium access control (MAC) protocols for wireless networks. The paper develops a framework to study the energy consumption of a MAC protocol from the transceiver usage perspective. This framework is then applied to compare the performance of a set of pr ..."
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Cited by 30 (2 self)
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this paper addresses energy efficiency in medium access control (MAC) protocols for wireless networks. The paper develops a framework to study the energy consumption of a MAC protocol from the transceiver usage perspective. This framework is then applied to compare the performance of a set of protocols that includes IEEE 802.11, EC-MAC, PRMA, MDR-TDMA, and DQRUMA ***
Systems Issues in Mobile Computing
- Matsushita Information Technology Lab, 2 Research Way, Third Floor
, 1993
"... The decreasing size of computer components and the increasing availability of wireless communication technology make possible ubiquitous mobile computing: access from anywhere, at any time, to computer networks and the rich set of services attached to them. Mobile computers provide a powerful interf ..."
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Cited by 24 (0 self)
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The decreasing size of computer components and the increasing availability of wireless communication technology make possible ubiquitous mobile computing: access from anywhere, at any time, to computer networks and the rich set of services attached to them. Mobile computers provide a powerful interface to services that allow a mobile user to access diverse sources of information, exchange electronic messages, interact with other users in real time, and utilize remote computing resources. Previous advances in distributed systems provide a base for such applications, but realizing the full potential of mobile computing requires solutions to new problems. Achieving mobility requires trading performance for weight and power. The hardware weighs less, but is less powerful. To achieve high-performance, mobile computers must utilize wireless networks to access the resources of more powerful but less mobile computers. In addition, moving a computer implies the need for reconfiguration at diffe...
Indexing techniques for power management in multi-attribute data broadcast. ACM/Baltzer Mobile Networking and Applications
- ACM/Kluwer J. Mobile Networks and Applications (MONET
"... Abstract. In this paper, we discuss the power conservative indexing techniques for managing multi-attribute data broadcast on wireless channels. These indexing techniques, namely, index tree, signature and hybrid, aim at improving the battery power consumption of mobile clients. By taking into accou ..."
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Cited by 5 (4 self)
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Abstract. In this paper, we discuss the power conservative indexing techniques for managing multi-attribute data broadcast on wireless channels. These indexing techniques, namely, index tree, signature and hybrid, aim at improving the battery power consumption of mobile clients. By taking into account the broadcast management factors such as clustering and scheduling, these three indexing schemes may significantly reduce tune-in time while maintaining a reasonable access time. Cost models for single and multi-attribute query processing are developed. Our performance evaluation shows that the signature and hybrid methods are superior to the index tree method.
Peak Power Plays in Database Engines
"... Database engines often consume significant power during query processing activities, motivating researchers to investigate the redesign of their internals to minimize these overheads. While the prior literature has dealt exclusively with average power considerations, our focus here is on peak power ..."
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Cited by 3 (0 self)
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Database engines often consume significant power during query processing activities, motivating researchers to investigate the redesign of their internals to minimize these overheads. While the prior literature has dealt exclusively with average power considerations, our focus here is on peak power consumption. We begin by profiling the peak power behavior of a representative suite of popular commercial database engines in benchmark query processing environments, and demonstrate that their consumption can often be substantial. Then, we develop a pipeline-based model of query execution plans that lends itself to accurately estimating peak power consumption, suggesting its gainful employment in server design and capacity planning. More potently, given a space of competing plan choices, it could help identify plans with attractive tradeoffs between peak-power and time-efficiency considerations, and we present sample instances of such tradeoffs. Finally, we discuss extensions of our modeling approach to inductive pipelines and multi-query workloads.
Distributed Work Management: An Application Area for Mobile Computing
, 1995
"... Currently much research effort is done in the area of Mobile Computing, emphasizing infrastructure issues on both hardware and software. The advances in mobile technology allows to look for possible applications. We claim that asynchronous CSCW applications are especially suitable to run on such mob ..."
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Cited by 1 (1 self)
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Currently much research effort is done in the area of Mobile Computing, emphasizing infrastructure issues on both hardware and software. The advances in mobile technology allows to look for possible applications. We claim that asynchronous CSCW applications are especially suitable to run on such mobile equipment. In particular, we will emphasize on activity co-ordination in distributed work environments. After a description of our Task Manager implementation running over wide area networks, we will discuss in detail the extensions that are needed to run the Task Manager mobilly. We will focus on a user driven data caching scheme, and we will suggest to use both replicates and copies of data objects. 1: CSCW and Mobile Computing: is there any relation ? Current research on mobile computing is concentrating on infrastructure issues of both hard- and software. Research has been done to reduce the power consumption [1] by both data compression methods and strategies to minimize the time ...
The computational requirements of mobile machines
- In 1 st IEEE International Conference on Engineering of Complex Computer Systems
, 1995
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On the Construction of Mobile Database Management Systems
"... Managing the infoglut in this information age requires more than the traditional and fixed computing environment in order to keep up with fast changing technologie. Cellular and mobile communications offer flexibility in accessing and manipulating information without restricting users to specific lo ..."
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Managing the infoglut in this information age requires more than the traditional and fixed computing environment in order to keep up with fast changing technologie. Cellular and mobile communications offer flexibility in accessing and manipulating information without restricting users to specific locations. While this technology is revolutionary in its approach to managing data, many issues remain to be addressed. In this paper, we focus on the database aspects of mobile computing. We provide an overview of the different issues mobile DBMSs must address for them to provide an adequate environment for database mobile users. We propose a minimal mobile DBMS architecture and suggest further research to bring this area to a mature state. 1 Introduction Advances in cellular communications and satellite services will enable mobile users to access information across the globe. As the technology matures, millions of people will become mobile users [Col94] [Kob93]. Access to various informatio...
Informat ion Filtering in Wireless and Mobile Environments
"... This paper describes the issue of power conservation on mobile clients, e.g., palmtop computers, and suggests that signature methods are suitable for real-time information filtering on wireless communication services. Two signatwe- based approaches, namely simple signature and multi-level signature ..."
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This paper describes the issue of power conservation on mobile clients, e.g., palmtop computers, and suggests that signature methods are suitable for real-time information filtering on wireless communication services. Two signatwe- based approaches, namely simple signature and multi-level signature schemes, are presented. Cost models for access time and tune-in time of these two approaches are developed. 1
