Title :
QoS Routing in Wireless Mesh Networks with Cognitive Radios
Author :
Hincapie, Roberto ; Tang, Jian ; Xue, Guoliang ; Bustamante, Roberto
Author_Institution :
Dept. of Telecommun. Eng., Univ. Pontificia Bolivariana, Medellin
Abstract :
In this paper, we study QoS routing in wireless mesh networks with cognitive radios, which involves route selection, channel allocation and scheduling. It turns out to be a hard problem because of the impact of interference and channel heterogeneity. We formally model it as an optimization problem and present an integer linear programming (ILP) formulation to provide optimal solutions. We then present a distributed routing protocol which can select a route and allocate resources for a connection request to satisfy its end-to-end bandwidth requirement. NS2 based simulation results show the performance given by our protocol is close to that of the optimal solution.
Keywords :
bandwidth allocation; channel allocation; cognitive radio; integer programming; linear programming; quality of service; radio networks; radiofrequency interference; routing protocols; scheduling; telecommunication network topology; QoS routing; channel allocation; channel heterogeneity; channel scheduling; cognitive radio; distributed routing protocol; end-to-end bandwidth requirement; integer linear programming formulation; interference; network route selection; optimization problem; wireless mesh network; Bandwidth; Channel allocation; Cognitive radio; Integer linear programming; Interference; Media Access Protocol; Quality of service; Routing protocols; Wireless mesh networks; Wireless networks;
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
Print_ISBN :
978-1-4244-2324-8
DOI :
10.1109/GLOCOM.2008.ECP.933
