Electronic Theses and Dissertation

Penelitian ini membahas analisis performa protokol CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) dengan metode 1-Persistent menggunakan model Grid Position Allocator dalam jaringan nirkabel. Protokol CSMA/CA 1-Persistent memiliki karakteristik di mana node akan terus memantau channel dan langsung mengirimkan data ketika channel dalam keadaan idle. Meskipun memberikan respon cepat, metode ini rentan terhadap tabrakan pada jaringan dengan lalu lintas padat. Penelitian ini bertujuan untuk mengevaluasi bagaimana metode 1-Persistent mengelola akses media transmisi dalam skenario jaringan yang berbeda, terutama dalam kondisi kepadatan node yang bervariasi. Simulasi dilakukan menggunakan Network Simulator 3 (NS-3) untuk mengamati metrik kinerja seperti throughput, delay, jitter, packet delivery ratio (PDR), dan packet loss pada skenario yang berbeda-beda, termasuk variasi jumlah node dan kecepatan transmisi dari 1 Mbps hingga 100 Mbps. Kemudian divisualisasikan menggunakan NetAnim sehingga perpindahan paket dapat terlihat. Hasil penelitian menunjukkan bahwa penggunaan metode 1-Persistent dengan model grid mampu meningkatkan efisiensi transmisi data dalam kondisi jaringan tertentu, meskipun pada kondisi padat tetap ditemukan tantangan berupa peningkatan delay dan packet loss. Penelitian ini memberikan kontribusi pada pemahaman karakteristik protokol 1-Persistent dan penerapannya dalam desain jaringan nirkabel yang efisien. Terutama dalam memahami dinamika kinerja metode 1-Persistent dalam skema alokasi posisi grid.

Kata Kunci: CSMA/CA, 1-Persistent, Grid Position Allocator, NS-3, NetAnim.

This study discusses the performance analysis of the CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) protocol using the 1-Persistent method with the Grid Position Allocator model in wireless networks. The CSMA/CA 1-Persistent protocol has the characteristic where nodes continuously monitor the channel and immediately transmit data when the channel is idle. Although it provides a fast response, this method is prone to collisions in networks with heavy traffic. This study aims to evaluate how the 1-Persistent method manages media access in different network scenarios, particularly under varying node density conditions. Simulations were conducted using Network Simulator 3 (NS-3) to observe performance metrics such as throughput, delay, jitter, packet delivery ratio (PDR), and packet loss in different scenarios, including variations in the number of nodes and transmission speeds ranging from 1 Mbps to 100 Mbps. The results were then visualized using NetAnim to observe packet movement. The research results indicate that the use of the 1-Persistent method with a grid model can improve data transmission efficiency under certain network conditions, although challenges such as increased delay and packet loss are still encountered under dense conditions. This study contributes to the understanding of the characteristics of the 1-Persistent protocol and its application in the design of efficient wireless networks. Particularly in understanding the performance dynamics of the 1-Persistent method in grid position allocation schemes. Keywords: CSMA/CA, 1-Persistent, Grid Position Allocator, NS-3, NetAnim.