An Analytical Model for CBAP Allocations in IEEE 802.11ad
| Autor: | Tanguy Ropitault, Chiara Pielli, Michele Zorzi, Nada Golmie |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
FOS: Computer and information sciences
IEEE 802 access protocols Computer science Throughput Access control 02 engineering and technology mathematical model Millimeter wave (mmWave) communication multiaccess communication Computer Science - Networking and Internet Architecture 0203 mechanical engineering PHY 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Networking and Internet Architecture (cs.NI) Hidden node problem business.industry Network packet 020206 networking & telecommunications 020302 automobile design & engineering Transmission (telecommunications) Resource management (computing) business Computer network |
| Popis: | The IEEE 802.11ad standard extends WiFi operation to the millimeter wave frequencies, and introduces novel features concerning both the physical (PHY) and Medium Access Control (MAC) layers. However, while there are extensive research efforts to develop mechanisms for establishing and maintaining directional links for mmWave communications, fewer works deal with transmission scheduling and the hybrid MAC introduced by the standard. The hybrid MAC layer provides for two different kinds of resource allocations: Contention Based Access Periods (CBAPs) and contention free Service Periods (SPs). In this paper, we propose a Markov Chain model to represent CBAPs, which takes into account operation interruptions due to scheduled SPs and the deafness and hidden node problems that directional communication exacerbates. We also propose a mathematical analysis to assess interference among stations. We derive analytical expressions to assess the impact of various transmission parameters and of the Data Transmission Interval configuration on some key performance metrics such as throughput, delay and packet dropping rate. This information may be used to efficiently design a transmission scheduler that allocates contention-based and contention-free periods based on the application requirements. |
| Databáze: | OpenAIRE |
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