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Home > Proactive Strategies to Improve Link Stability under Topology Changes in Mobile Adhoc Networks

Proactive Strategies to Improve Link Stability under Topology Changes in Mobile Adhoc Networks

Thesis Info

Access Option

External Link

Author

Naushad, Alamgir

Program

PhD

Institute

Ghulam Ishaq Khan Institute of Engineering Sciences and Technology

City

Swabi

Province

KPK

Country

Pakistan

Thesis Completing Year

2019

Thesis Completion Status

Completed

Subject

Engineering Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/10901/1/Engr_Alamgir_Naushad_Computer_Syst_Eng_2019_GIKIEST_17.07.2019.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727814713

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Improving link stability under topological changes arise due to link/node failures under uniform speeds and random trajectories of mobile nodes, is a significant problem that mustbeaddressedtoimproveroutingperformanceinmobileadhocnetworks(MANETs). Under random characteristics of wireless channels, there must be a unified model based on proactive strategies to improve link stability under topological changes for stable and robust communications among neighboring nodes. This thesis addresses the problem of linkstabilityundertopologicalchangesbypresentingproactivestrategiesforfasterfailure detection, robustly maintaining link stability, effective link stability estimation, and efficient traffic estimation. First, a novel faster failure detection (FFD) strategy is proposed for link re-connectivity under link/node failures using a Hello messaging scheme. FFD is modeled through a Continuous Time Markov Chain (CTMC) based approach to proactivelydetectlink/nodefailuresundertopologicalchangesinMANETs. TheFFDstrategy minimizes delay incurred as a result of link re-connectivity, optimizes adjacency establishments among neighboring nodes, and enables energy efficiency to improve network connectivity. Second, a novel dynamic link connectivity (DLC) strategy for maintaining link stability among neighboring nodes. DLC is modeled through CTMC by taking into account continuous time analysis of dynamic link connectivity and stationary probability distribution between neighboring node pairs. The DLC strategy examines stability of network nodes and calculates probabilities of connection and disconnection states on the basis of transition rate estimation between these states. The DLC strategy robustly maintainslinkconnectivityforfuturecommunicationsamongneighboringnodesinsideacluster. Third, novel link connectivity metrics (LCM) and path distribution analysis (PDA) strategiesarepresentedforeffectivelinkstabilityestimationinMANETs. LCMandPDA are modeled using CTMC under random movement of network nodes and topology trig xxii geredpathdurationstatisticsasafunctionofeffectivelinkstabilityestimation. TheLCM and PDA strategies collectively enhance robustness and stability of a network by making it less prone to connectivity failures for future communications among network nodes. Finally, the fourth contribution is a novel efficient traffic estimation (ETE) strategy using Hello messaging among neighboring nodes inside a cluster. ETE is modeled through periodic exchange of transmitted Hello messages under local link connectivity between neighboring node pairs, which follows a CTMC model. The ETE strategy estimates optimum Hello messages traffic through local link connectivity. Simulation and analytical results demonstrate that the proposed strategies improve link stability under topological changes and can be deployed as effective tools for maximizing routing performance in MANETs.
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حضرت سید افتخار الحسن شاہ

حضرت سید افتخار الحسن شاہ زواری
جیہڑا آپ دے در تے آیا دکھ رہیا ناں بیماری
کھوبر پُل تے لمبی بھینی دین دا جھنڈا لایا
ایڈا فیض روحانی ونڈیا ہر اک نوں ورتایا
اوگن ہار غریباں اتے بہتا کرم کمایا
دل دا میل اتارن پل وچ بھاویں جنی وی اوگنہاری
ویکھن نوں اوہ بہتے سادے پر دل وچ دیوے بلدے
کرن نظارے رب دے پیارے جہڑے سنگت رلدے
بہتا شوق زیارت رکھدے راہواں آپ دیاں ملدے
اوگن ہار غریباںدی حالت آپ نے بہت سنواری
ملتان شہر توں فیض روحانی لمبی بھینی آیا
مخدوم و المشائخ زوار سائیں نے بہتا ہی کرم کمایا
موتی پئے بکھیرن سائیں جتھے وی قدم مبارک پایا
راہواں آپ دیاں تک تک سئیاں کردیاں رہن انتظاری
مخدوم والمشائخ زوار سائیں بیان جدوں فرماندے
انسان کیا پرندے وی ایتھے آکے ہن رک جاندے
سئیاں راہواں تک دیاں رہندیاں کدوں سرکار آندے
مکھ مخدوم دا تکن لئی خلقت راہواں تک تک ہاری

محفل پاک نظامی دے وچ جدوں جلوا افروز نیں ہوندے
محفل دے پروانے سارے عشق نبی وچ روندے
نیر وہاون تے کرلاون پئے ہنجواں ہار پروندے
قلبی عشق روحانی والی لگے دل تے ضرب وی کاری
بیم و رجا تے نظر جے پائیے ولیاں دے سَر کردے
سلطان سکندر مست قلندر آن سلامی بھردے
اوگن ہار غریباں اُتے کنیاں وانگوں ورہدے
جس تے نظر کرم دی پاندے کردے قلب وی جاری
عشق نبی دی شمع جلائی گھر گھر روشن ہویا
لبھی جس حقیقی حیرت اوناں رات نوں سویا
بن حیرت ایہہ زندگی گزری کر افسوس اوہ رویا
حیرت باہجوں زندگی ساری بن گئی ذلت خواری
سید شیر علی شاہ نے لمبی بھینی...

A Comparative Research Between Conventional and Islamic Bank System of Pakistan: Liquidity Risk Management

The function of the bank is differentiated into budgetary middle people, facilitator and supporters. Hence, the banks keep themselves as confided body to their trade and business partners. Assets hazard could emerge and to be seen out of such diverse tasks since they are entirely on stake in terms of accessibility. When assets are set out by the non-members supplementary actions are necessary to be taken by the Islamic banks in order to balance assets and liquidity with sharia standards. The purpose of this exploration is to find the liquidity risk associated to the dissolvability of finance based foundation in order to evaluate assets risk management via parallel evaluation between Islamic and other Pakistani banks. This paper inspects the significance of the magnitude of the bank, networking capital margin on equity, finical sufficiency plus return on Resources and Assets (RoA), along assets stake organization in conventional plus Islamic banks of the Pakistan. The investigation relays on auxiliary knowledge that is over the period of four years. For instance, during 2017-2018, the investigation explored positive, hence, less significant relationship of magnitude of the firm plus networking cash surge to net assets along with liquidity vulnerability in similar models. Moreover, financial competence share in other banks plus margin of assets in Islamic banks is found encouraging and prominent at ten percent 10% gradation equivalent.

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