Nurul Nazirah Mohd Imam Ma'arof, Norsheila Fisalb
2016 Jurnal Teknologi  
Graphical abstract MS3 MS4 MRBS RS2 MS2 MS1 RS1 Relay link Access link MS MS MRBS FRS MS MS FRS FRS MRS FRS MS NRS MS Emergency / disaster recovery Indoor coverage Coverage extension at cell edge Shadow of building Coverage hole Coverage in mobile vehicle Abstract Mobile Multihop Relay (MMR) network is an attractive and low-cost solution for expanding service coverage and enhancing throughput of the conventional single hop network. However, mobility of Mobile Station (MS) in MMR network might
more » ... MMR network might lead to performance degradation in terms of Quality of Service (QoS). Selecting an appropriate Relay Station (RS) that can support data transmission for high mobility MS to enhance QoS is one of the challenges in MMR network. The main goal of the work is to develop and enhance relay selection mechanisms that can assure continuous connectivity while ensuring QoS in MMR network using NCTUns simulation tools. The approach is to develop and enhance relay selection that allows cooperative data transmission in transparent relay that guarantees continuous connectivity. The proposed relay selection defined as Co-ReSL depends on weightage of SNR, and weightage of Link Expiration Time (LET), β. The QoS performances of the proposed relay selections are in terms of throughput and average end-to-end (ETE) delay. The findings for Co-ReSL shows that at heavy traffic load, throughput increases up to 5.7% and average ETE delay reduces by 7.5% compared to Movement Aware Greedy Forwarding (MAGF) due to cooperative data transmission in selective links. The proposed relay selection mechanisms can be applied in any high mobility multi-tier cellular network. Nurul Nazirah & Norsheila / Jurnal Teknologi (Sciences & Engineering) 78: 5-10 (2016) 51-58 pengulang yang dicadangkan boleh digunakan dalam mana-mana rangkaian selular pelbagai peringkat yang bermobiliti tinggi. Kata kunci: Rangkaian pengulang banyak-lompatan bergerak, mobiliti, pemilihan pengulang, sambungan berterusan
doi:10.11113/jt.v78.8835 fatcat:tvmk5rk545f6njezvsd2odhyu4