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Optimal relay and channel selection schemes for multiconstrained QoS multicast routing in cognitive radio ad hoc networks
Author(s) -
Indumathi G.,
Vaithianathan V.
Publication year - 2021
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.4674
Subject(s) - computer science , computer network , multicast , relay , protocol independent multicast , energy consumption , channel (broadcasting) , quality of service , cognitive radio , wireless ad hoc network , distributed computing , telecommunications , wireless , power (physics) , physics , ecology , quantum mechanics , biology
Summary During multicasting in cognitive radio ad hoc network (CRAHN), apart from energy consumption, interchannel interference, path delay, and channel switching delay should be minimized. The channel selection should be done, based on spectrum opportunities and channel quality. Hence, the multicast routing problem becomes a multiconstrained QoS routing problem. This paper proposes optimal relay and channel selection schemes (ORCS) for multiconstrained QoS multicast routing in CRAHNs. For multicast tree construction, distributed minimum spanning tree (DMST) is used. For meeting the delay, energy, and interference constraints, relay nodes are chosen with minimum path delay, less energy consumption, and minimum interference. For effective channel assignment, channels with good channel quality, maximum spectrum accessibility, and sufficient common slots are selected. By simulation results, it has been shown that the proposed ORCS minimize the energy consumption and end‐to‐end delay.