Probabilistic-Based Adaptive Full-Duplex and Half-Duplex Medium Access Control
| Autor: | Shih-Ying Chen, Kate Ching-Ju Lin, Ashutosh Sabharwal, Ting-Feng Huang, Y.-W. Peter Hong |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Hardware_MEMORYSTRUCTURES
business.industry Computer science InformationSystems_INFORMATIONSYSTEMSAPPLICATIONS Distributed computing Node (networking) ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Probabilistic logic Duplex (telecommunications) Throughput Access control Data_CODINGANDINFORMATIONTHEORY Telecommunications link Media access control business Protocol (object-oriented programming) Random access Computer network |
| Zdroj: | GLOBECOM |
| Popis: | The feasibility of practical in-band full-duplex radios has recently been demonstrated experimentally. One way to leverage full-duplex in a network setting is to enable three-node full-duplex, where a full-duplex access point (AP) transmits data to one node yet simultaneously receives data from another node. Such three-node full-duplex communication however introduces inter-client interference, directly impacting the full-duplex gain. It hence may not always be beneficial to enable three-node full-duplex transmissions. In this paper, we present a distributed full-duplex medium access control (MAC) protocol that allows an AP to adaptively switch between full-duplex and half-duplex modes. We formulate a model that determines the probabilities of full-duplex and half-duplex access so as to maximize the expected network throughput. A MAC protocol is further proposed to enable the AP and clients to contend for either full-duplex or half-duplex transmissions based on their assigned probabilities in a distributed way. Our evaluation shows that, by combining the advantages of centralized probabilistic scheduling and distributed random access, our design improves the overall throughput by 3.16× and 1.44×, on average, as compared to half-duplex 802.11 and greedy downlink-uplink client pairing. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|