Interference coordination in wireless networks: A flow-level perspective

Richard Combes (1) , Zwi Altman (2) , Eitan Altman (3)

1 KTH - KTH Royal Institute of Technology [Stockholm]
2 France Telecom Division R&D [Issy-les-Moulineaux]
3 MAESTRO - Models for the performance analysis and the control of networks

In dense wireless networks, inter-cell interference highly limits the capacity and quality of service perceived by users. Previous work has shown that approaches based on frequency reuse provide important capacity gains. We model a wireless network with Inter-Cell Interference Coordination (ICIC) at the flow level where users arrive and depart dy- namically, in order to optimize quality of service indicators perceivable by users such as file transfer time for elastic traffic. We propose an algorithm to tune the parameters of ICIC schemes automatically based on measurements. The convergence of the algorithm to a local optimum is proven, and a heuristic to improve its convergence speed is given. Numerical experiments show that the distance between local optima and the global optimum is very small, and that the algorithm is fast enough to track changes in traffic on the time scale of hours. The proposed algorithm can be implemented in a distributed way with very small signaling load.

Mots clés: numerical analysis; quality of service; radio networks; radiofrequency interference; telecommunication traffic; ICIC scheme; convergence speed; elastic traffic; file transfer time; flow-level perspective; global optimum; intercell interference coordination; interference coordination; local optima; small signaling load; Convergence; Fading; Interference; Load modeling; Niobium; Optimization; Load Balancing; OFDMA; Queuing Theory; Self Optimization; Self configuration; Self-Organizing Networks; Stability; Stochastic Approximation; Traffic Engineering; Wireless Networks

Domaines: Informatique et théorie des jeux [cs.GT]

Richard Combes, Zwi Altman, Eitan Altman. Interference coordination in wireless networks: A flow-level perspective. IEEE INFOCOM - 32nd International Conference on Computer Communications, Apr 2013, Turin, Italy. pp.2841-2849, ⟨10.1109/INFCOM.2013.6567094⟩. ⟨hal-00913239⟩