Gateway placement optimization for load balancing in wireless mesh networks

Wireless mesh networks (WMNs) have recently evoked much research attention as a novel technology for last-mile broadband Internet access. When designing a WMN, gateway placement is significant for it determines the total network throughput. To address this problem, a novel gateway placement approach is proposed in this paper, in which three objectives are optimized, i.e. the number of gateways, the average MR (mesh router)-GW (gateway) hop count and the variance of gateway load. The gateway placement problem is modeled as a multiple objective linear program first, and then a two-stage load balanced gateway placement algorithm is proposed. The first stage is weight-based greedy gateway selection, and the second stage is load balanced MR attachment. Simulation results show that the algorithm behaves similarly compared with existing approaches in both number of gateways and average MR-GW hop count, while achieving better load balance.

[1]  Vasek Chvátal,et al.  A Greedy Heuristic for the Set-Covering Problem , 1979, Math. Oper. Res..

[2]  Ronald L. Rivest,et al.  Introduction to Algorithms , 1990 .

[3]  H. T. Kung,et al.  Load-balancing routing for wireless access networks , 2001, Proceedings IEEE INFOCOM 2001. Conference on Computer Communications. Twentieth Annual Joint Conference of the IEEE Computer and Communications Society (Cat. No.01CH37213).

[4]  Ronald L. Rivest,et al.  Introduction to Algorithms, Second Edition , 2001 .

[5]  P. Kumar,et al.  Capacity of Ad Hoc Wireless Networks , 2002 .

[6]  Jitendra Padhye,et al.  Routing in multi-radio, multi-hop wireless mesh networks , 2004, MobiCom '04.

[7]  Ranveer Chandra,et al.  Optimizing the placement of Internet TAPs in wireless neighborhood networks , 2004, Proceedings of the 12th IEEE International Conference on Network Protocols, 2004. ICNP 2004..

[8]  Yigal Bejerano.  Efficient integration of multihop wireless and wired networks with QoS constraints , 2004, IEEE/ACM Transactions on Networking.

[9]  Tzi-cker Chiueh,et al.  Architecture and algorithms for an IEEE 802.11-based multi-channel wireless mesh network , 2005, Proceedings IEEE 24th Annual Joint Conference of the IEEE Computer and Communications Societies..

[10]  Ian F. Akyildiz,et al.  Wireless mesh networks: a survey , 2005, Comput. Networks.

[11]  Raouf Boutaba,et al.  Gateway Placement Optimization in Wireless Mesh Networks With QoS Constraints , 2006, IEEE Journal on Selected Areas in Communications.

[12]  Randeep Bhatia,et al.  Joint Channel Assignment and Routing for Throughput Optimization in Multiradio Wireless Mesh Networks , 2006, IEEE J. Sel. Areas Commun..

[13]  Myung J. Lee,et al.  An efficient multipath structure for concurrent data transport in wireless mesh networks , 2007, Comput. Commun..

[14]  Amit Kumar,et al.  Efficient load-balancing routing for wireless mesh networks , 2007, Comput. Networks.

[15]  Bing He,et al.  Optimizing deployment of Internet gateway in Wireless Mesh Networks , 2008, Comput. Commun..

[16]  Xiang-Yang Li,et al.  Gateway Placement for Throughput Optimization in Wireless Mesh Networks , 2008, Mob. Networks Appl..