Probabilistic Medium Access Control for Full-Duplex Networks With Half-Duplex Clients

Autor: Ashutosh Sabharwal, Ting-Feng Huang, Shih-Ying Chen, Y.-W. Peter Hong, Kate Ching-Ju Lin
Rok vydání: 2017
Předmět:
FOS: Computer and information sciences
Computer science
Distributed computing
Duplex (telecommunications)
Access control
Throughput
Data_CODINGANDINFORMATIONTHEORY
02 engineering and technology
Computer Science - Networking and Internet Architecture
0203 mechanical engineering
Telecommunications link
0202 electrical engineering
electronic engineering
information engineering
Electrical and Electronic Engineering
Networking and Internet Architecture (cs.NI)
Hardware_MEMORYSTRUCTURES
business.industry
Wireless network
InformationSystems_INFORMATIONSYSTEMSAPPLICATIONS
Applied Mathematics
Node (networking)
ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS
Probabilistic logic
020206 networking & telecommunications
020302 automobile design & engineering
Computer Science Applications
Media access control
business
Random access
Computer network
Zdroj: IEEE Transactions on Wireless Communications. 16:2627-2640
ISSN: 1536-1276
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 2.70x and 1.53x, on average, as compared to half-duplex 802.11 and greedy downlink-uplink client pairing.
Databáze: OpenAIRE
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