Ditemukan 2 dokumen yang sesuai dengan query
Muhamad Luthfi Mufadel
Abstrak :
ABSTRAK
Setiap permintaan koneksi yang terjadi di jaringan seluler perlu melewati prosedur random access. Dalam jaringan 5G, terdapat minimal tiga layanan yaitu mMTC, eMBB, dan URLLC. Setiap layanan yang ada pada jaringan 5G dapat dibagi-bagi resource yang ada dengan menggunakan teknologi network slicing. Resource yang digunakan dalam prosedur random access yaitu preamble. Preamble dikonfigurasikan untuk setiap slice agar mencapai kebutuhan tiap layanan yang ada. Selain preamble, performa dari jaringan ditentukan oleh jumlah transmisi dan durasi backoff window, semakin besar kedua variabel tersebut maka jumlah perangkat yang dapat dilayani akan semakin banyak. Tetapi semakin banyak jumlah transmisi dapat menyebabkan borosnya daya yang dipakai dan semakin lama durasi backoff window menyebabkan delay yang tinggi. Pengaturan jumlah preamble, jumlah transmisi, dan lamanya backoff window pada masing-masing slice diperlukan untuk memenuhi kriteria yang diperlukan agar mendapatkan performa yang baik.
ABSTRACT
Every connection request that occurs on a cellular network needs to go through a random access procedure. In the 5G network, there are at least three services namely mMTC, eMBB, and URLLC. Every service on the 5G network can be shared with existing resources using network slicing technology. The used resource in the random access procedure is preamble. The preamble is configured for each slice to meet the needs of each existing service. Besides the preamble, the performance of the network is determined by the number of transmissions and the duration of the backoff window, the larger the two variables, the more devices can be served. But the greater number of transmissions can increase power usage and the longer duration of the backoff window causes a high delay. Setting the number of preambles, the number of transmissions, and the length of backoff window in each slice is needed to meet the criteria needed to get good performance.
Depok: Fakultas Ilmu Komputer Universitas Indonesia , 2020
S-Pdf
UI - Skripsi Membership Universitas Indonesia Library
Abstrak :
WLAN and WiMAX frame structures are preceded by preamble signals. They have some similarities such as consisting of two adjacent signals with repetition patterns. Therefore, this paper introduces a joint detection of WLAN and WiMAX preambles using a common circuit. Time domain detection is proposed in order to avoid FFT involvement that can increase the system complexity and latency. The proposed system is constructed from repetition based auto-correlation and cross-correlation with resources sharing that has lower complexity than the conventional one. Moreover, the fixed point simulation shows that the proposed circuit has satisfied the receiver minimum sensitivity requirements for both WLAN and WiMAX standards.
620 JURTEL 15:2 (2010)
Artikel Jurnal Universitas Indonesia Library