New Algorithm for Load Management and Battery Life Optimization
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Transcript of New Algorithm for Load Management and Battery Life Optimization
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GINU GEORGE & ASST PROF. T.VELMURUGAN
NANDU RAJENDRAN SENSE DEPARTMENT
VIT UNIVERSITY VIT UNIVERSITY
VELLORE VELLORE
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HANDOFF or HANDOVER Changing the channel associated with the current
connection while a call is in progress.
Handoff between more or less different wireless
technologies is termed as VERTICAL HANDOFF. WLAN and UMTS are two types of networks
considered here.
Load management, collective battery life time of the
mobile devices connected and signal strength areconsidered as the criteria for handoffs
BS-base station, AP-access point and MN-mobilenodes are the notations used
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Develop a load management Algorithm to
efficiently balance the overall load in the given cell
Develop a battery optimization algorithm to
maximize the collective battery lifetime of the
connected mobile nodes
Develop a Strongest signal first algorithm to provide
enhanced connection quality.
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Architecture of integrated heterogeneous network consisting of
WLAN & cellular network
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OUTLINE OF LOAD MANAGEMENTALGORITHM
Determine the signal strength of each MN.
When large numbers of MNs are connected to an
AP/BS the bandwidth gets reduced due to largetraffic.
Identify the connection points with fair amount ofsignal strength and least load.
The MNs undergo handoff process to thoseconnection points which has least load distributionand ample amount of signal strength.
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If signal strength of mobile node:(R.S.S< 10mw)
Perform handoff.
Y(i)=min{bw of MNs APi, BSi}.
if Y(i)>>threshold, establish connection.
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If signal strength of mobile node:(R.S.S
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MN
BATTERY
LIFE
S/L
STRENGTH
LOADMANAGEMENT SSF
BATTERYOPTIMIZATION
HANDOFFALGORITHM
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Finds the best connection point which providesthe highest signal quality/strength
Gathers signal strength measurements from
the various neighboring connection points Battery power used for transmission and
reception of data is relatively higher comparedto normal operations
Battery lifetime gets reduced
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Before handoff After handoffAccess Point No: of Mobile Nodes
1 12
4
3 54 25 56 27
9
8 59 2
10 2
Access Point No: of Mobile Nodes
1 62 63 64 65 66 57 98 59 510 5
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Before handoff After handoff
It can be observed that the mobile nodes requiring
handoff are efficiently distributed to all available
access points and base station in the cell and therebyproducing effective load management
Base Station No: of Mobile Nodes
1 202 17
Base Station No: of Mobile Nodes
1 202 20
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When connections are to be migrating betweenheterogeneous networks for performance andhigh-availability reasons, then seamless vertical
handoff is a necessary and an essential step.
The proposed three algorithms providesefficient management of resources to lendenhanced performances to the users