Low Energy Efficient Wireless Communication Network Design ppt
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amitkush
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#1
05-04-2010, 06:37 AM


Low Energy Efficient Wireless Communication Network Design ppt
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projects wizhard
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#2
09-07-2010, 06:25 PM

Hi,
visit this thread for moer details on this topic:
topicideashow-to-low-energy-efficient-wireless-communication-network-design?pid=19600#pid19600
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
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venkata vishweshwar
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#3
15-12-2010, 09:08 PM

hey i want the ppt regarding low energy efficient wireless communication network
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seminar surveyer
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#4
16-12-2010, 10:47 AM

hi
please go through the thread given in above post
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kalandar.baba
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#5
08-01-2011, 10:36 PM

send me the ppt.................
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seminar surveyer
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#6
10-01-2011, 11:02 AM

sorry , we don't have ppt on this topic.
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pooja pattanakude
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#7
10-01-2011, 11:06 PM

hi sir plz could send detail of low energy efficient ireless communication
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#8
11-01-2011, 09:42 AM

if you checked the 1st page of this thread, you could see some links to get detailed information on the topic. Anyway, please go through the following link.

topicideashow-to-low-energy-efficient-wireless-communication-network-design--15841?pid=19600#pid19600
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seminar flower
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#9
03-10-2012, 11:41 AM

Low energy efficient wireless communication network


.pptx   Low energy efficient wireless communication network.pptx (Size: 159.02 KB / Downloads: 16)

Introduction

Energy consumption of portable computers like PDAs and laptops is the limiting factor in the amount of functionality that can be placed in these devices. More extensive and continuous use of wireless network services will only aggravate this problem. However, even today, research is still focused on performance and (low power) circuit design. There has been substantial research in the hardware aspects of mobile communications energy-efficiency, such as low-power electronics, power-down modes, and energy efficient modulation. However, due to fundamental physical limitations, progress towards further energy-efficiency will become mostly an architectural and software-level issue.

Low energy efficient wireless communication network

Energy efficient wireless communication network design is an important & challenging problem. It is important because mobile units operate on batteries with energy supply. It is challenging because there are many different issues that must be dealt with when designing a low energy wireless communication system (such as amplifier design, coding & modulation design), & these issues are coupled with one another. Futhermore, design & operation of each component of wireless communication system present trade-offs between performance & energy consumption. Therefore, challenge is to exploit coupling among various component of wireless communication system, & understand trade-offs between performance & energy consumption in each individual components , in order to come up with an overall integrated system design that has optimal performance & achieves low energy (power).

Energy-efficient wireless network design

This section describes the basic principles and mechanisms of the network interface architecture implemented in our research, and our energy efficient medium access control protocol for wireless links, called E2MaC. The protocol and the architecture are targeted to a system in which quality of service (including the incurring energy consumption) plays a crucial role. The ability to integrate diverse functions of a system on the same chip provides the challenge and opportunity to do system architecture design and optimizations across diverse system layers and functions .

System overview

The goals of low energy consumption and the required support for multiple traffic types lead to a system that is based on reservation and scheduling strategies. The wireless ATM network is composed of several base-stations that each handle a single radio cell2 possibly covering several mobile stations. We consider an office environment in which the cells are small and have the size of one or several rooms. This not only saves energy because the transmitters can be low powered, it also provides a high aggregate bandwidth since it needs to be shared with only few mobiles. The backbone of the base stations is a wired ATM network. In order to avoid a serious mismatch between the wired and wireless networks, the wireless network part should offer similar services as the wired network. The general theme that influences many aspects of the design of the data link protocol is adaptability and flexibility.

E2MaC protocol

In the E2MaC protocol the scheduler of the base station is responsible for providing the required QoS for the connections on the wireless link and tries to minimize the amount of energy spend by the mobile. It uses the four main principles . The protocol is able to provide near-optimal energy efficiency (i.e. energy is spent for the actual transfer only) for a mobile within the constraints of the QoS of all connections. The protocol uses fixed-length frames of multiple slots. Each slot has a fixed size. A slot determines the time-frame in which data can be received or transmitted. The base-station and mobile are completely synchronised (the time unit is a slot), which allows the mobile to power-on precisely when needed. The base-station controls the traffic for all mobiles in range of the cell and broadcasts the schedule to the mobiles.

E2MaC frame structure

The frame is divided in time-slots that can have three basic types: traffic control, registration request, and data. Only the traffic control type has a fixed position at the start of the frame3. The number of slots needed for traffic control depends on the size of the frame and is thus implementation dependent. Typically one slot is sufficient. The other types are dynamic, have no fixed size and can be anywhere in the rest of the frame. The base-station controls the traffic for all mobiles in range of the cell and broadcasts the schedule in the traffic control slot. Only new connections may encounter collisions in the registration request slots, the traffic control slots and data slots are collision-less.

QoS manager

The QoS manager establishes, maintains and releases wireless connections between the base-station and the mobile and also provides support for handover and mobility services. Applications contact the QoS manager when setting up a connection. The QoS manager will inform the applications when they should adapt their data streams when the QoS of a connection has changed significantly.

Slot scheduler

The notion of QoS over a wireless link has been the focus of much recent research, and several scheduling algorithms have been propose. This section describes a framework by which various scheduling mechanisms can be build that incorporates the QoS requirements and uses the four principles of energy efficient design The slot scheduler on the base-station assigns bandwidth and determines the required error coding for each individual connection. The QoS manager provides the service contracts used. For a proper slot assignment, the slot scheduler needs to know the current state of each connection. For the downlink direction, the scheduler acquires this information directly by monitoring the corresponding queues in the base station. For the uplink direction, this information can be obtained through the implementation of a dedicated protocol, which can be a polling scheme or a contention scheme. The polling based mechanism, often proposed for its implementation simplicity, requires a polling interval based on maxCTD. The polling scheme introduces a maximal delay equal to the polling interval.

Adaptive error control

A wireless channel quality is dynamic because of the rapid changes in signal and interference environment. The wireless channel quality is a function of the distance of user from base station, local and average fading conditions, interference variations, and other factors. Furthermore, in packet data systems the bursty nature of data traffic also causes rapid changes in interference characteristics.
Due to the dynamic nature of wireless networks, adaptive error control can give significant gains in bandwidth and energy efficiency . The input parameters for an adaptive error-control system can be classified into two main groups: requirements by the upper protocol layers and momentary transmission quality.
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#10
23-12-2012, 06:01 PM

can u please send a full seminar and presentation report with ppt for the topic "LOW ENERGY EFFICIENT WIRELESS COMMUNICATION NETWORK DESIGN".
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#11
24-12-2012, 12:01 PM

to get information about the topic "Low Energy Efficient Wireless Communication Network Design" RELATED TOPIC refer the link bellow

topicideashow-to-low-energy-efficient-wireless-communication-network-design?pid=19600#pid19600
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#12
20-01-2013, 03:17 PM

hi i need low energy efficient wireless communication network design ppt and documentation
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