Implementasi Aplikasi Presisi Paten Dalam Peningkatan Pelayanan Cepat Dan Tepat

Penelitian ini untuk mengimplentasikan Presisi dalam bentuk aplikasi pelayanan cepat dan tepat Kepolisian Republik Indonesia dengan konsep  prediktif, responsibilitas, transparan dan berkeadilan (PRESISI). Konsep presisi terdapat pencegahan atau prediktif perlu dilakukan dalam upaya pencegahan kejahatan.  Kemudian terkait responsibilitas menekankan bahwa kepolisian memang harus cepat tanggap untuk menangani kasus hukum terkait dengan ketertiban dan keamanan di masyarakat. Dengan era 4.0 penggunaan teknologi informasi dapat membantu kepolisian untuk cepat merespons dan segera menangani segala bentuk laporan yang masuk. Bencana yang melanda dunia pandemic  Covid-19 yang membatasi ruang lingkup berkumpul dalam suatu tempat untuk menghindari tertularnya virus covid-19. Implemtasi aplikasi Presisi adalah menjadi sousi yang tepat dalam melayani perpanjngan SIM. Aplikasi ini di desain untuk memangkas waktu antrian sehingga masyarakat yang memperpanjang  surat izin mengemudi tanpa turun dari kenderaan dengan konsep drive trhu.

Evaluation and Enhancement of Mac Protocols for Efficient Spectrum Management and Sharing in Cognitive Radio Networks

Cognitiveradionetworks(CRNs)havegainedatremendousinterestintheresearch community, as they tend to solve the existing and future issues of frequency spectrum scarcity by exploiting the spectrum holes in underutilized licensed and unlicensed frequency bands, thereby, improving the spectrum utilization. The number of channels in a Cognitive Radio Network (CRN) always varies with time and location as compared to legacy wireless networks with fixed number of radio channels. This variability of available channels in cognitive radio networks has brought new design challenges in MediumAccessControl(MAC)protocolsandhasledtotheneedformostefficientand reliable MAC protocols in a CRN that can sustain under variable network conditions. Thesharingofdiscoveredspectrumholesamongthecontendingsecondaryusers(SUs) increases the overall spectrum utilization; however, the utilization of these discovered spectrum holes within the CRN depends on the access mechanism of SUs. In random access, waste of these spectrum holes would occur due to collisions and un-attempted slots by SUs. Therefore, optimal use of these discovered holes with minimum or no waste is desirable in an efficient CRN. A self- organizing collision-free MAC protocol isproposedforthedistributedCRNthatismoreefficientinspectrumsharingbyavoiding collisions and maximally utilizing un-attempted slots during access phase, thus increasing the spectrum utilization and throughput. This is achieved by organizing and queuing the active SUs through a timer value and directing them in an orderly fashion to use the discovered holes. Finding holes from the underutilized portion of spectrum at varying times and locations is the most important function in CRNs. This requires efficient sensing policy at the MAC layer that can discover more idle channels in minimal time. Spectrum sensing policies for searching idle channels from the underutilized primary band can significantly affect the performance of SUs in terms of throughput, reliability and en ergy efficiency. The sensing policy depends on the channel sensing order that decides how SUs sense the primary user band in minimal period of time. A cooperative parallel sensing scheme with sequential channel selection order is proposed as part of the MAC protocol, which can discover all the free channels in the primary user band in minimal time. The proposed scheme has been analyzed for the number of channels sensedandthenumberofidlechannelsdiscovered. Furthermore,energyefficiencyand throughput of the proposed scheme have also been evaluated. The results show considerable improvement for the proposed scheme as compared to the random channel spectrum sensing schemes prevalent in adhoc CRNs. The work in this thesis has aimed to improve spectrum management by adopting new spectrum sensing policies and improvingspectrumsharingbyself-organizingthecognitiveusersforcollisionfreeaccess in adhoc CRN MAC protocols.