ABSTRACT
The conflicting channel allocation between the neighboring access points (APs) causes the channel sharing and interference between APs. Thus, the channelization scheme has a critical role to tackle this issue. Furthermore, to improve the network throughput, the channelization scheme may exploit the channel bonding feature of the latest Wi-Fi standard. However, since the channel bonding may degrade the network performance if it is allocated inappropriately, the channel bonding assignment should be performed carefully. In this paper, the proposed channelization scheme utilizes the interference graph to assign the channel (including the channel bonding) for each AP. The channel allocation problem is formulated with the objective of maximizing the total network throughput. Then, given the channel bonding assignment, the primary channel location for each AP is determined by observing whether the AP supports the static or dynamic channel bonding. According to the experiment, the proposed scheme successfully exploits the channel bonding even though in the dense Wi-Fi environment. The experiment using commercial devices shows that the proposed scheme outperforms the comparison schemes in terms of the total network throughput.
- S. Chieochan, E. Hossain, and J. Diamond, "Channel assignment schemes for infrastructure-based 802.11 WLANs: A survey," IEEE Commun. Surv. Tut, vol. 15, no. 1, pp. 124--136, Feb. 2010. Google ScholarDigital Library
- Linux wireless, "ACS: Automatic channel selection," {Online}. Available: https://wireless.wiki.kernel.org/en/users/documentation/acs, Accessed: 2017-08-10.Google Scholar
- P. Kulkarni, Z. Zhong, and F. Cao, "Moving away from the crowd: Channel selection in uncoordinated unplanned dense wireless LANs," in Proc. 32th ACM Sym. Applied Comput. '17, Marakesh, Morocco, Apr. 2017. Google ScholarDigital Library
- T. H. Lim, W. S. Jeon, and D. G. Jeong, "Centralized channel allocation scheme in densely deployed 802.11 wireless LANs," in Proc. 18th Int. Conf. Adv. Commun. Technol. '16, Pyeongchang, Korea, Mar. 2016.Google Scholar
- IEEE, "Enhancement for very high throughput operation in bands below 6 GHz," IEEE standard amendement 802.11ac, 2011.Google Scholar
- S. Jang and S. Bahk, "A channel allocation algorithm for reducing the channel sensing/reserving asymmetry in 802.11ac networks," IEEE Trans. Mob. Comput., vol. 14, no. 3, pp. 458--472, Mar. 2015.Google ScholarDigital Library
- B. Bellalta, A. Checco, A. Zocca, and J. Barcelo, "On the interactions between multiple overlapping wlans using channel bonding," IEEE Trans. Veh. Tehcnol., vol. 65, no. 2, pp. 796--812, Feb. 2015.Google ScholarCross Ref
- S. Han, X. Zhang, and K. G. Shin, "Fair and efficient coexistence of heterogeneous channel widths in next-generation wireless LANs," IEEE Trans. Mob. Comput., vol. 15, no. 11, pp. 2749--2760, Nov. 2016. Google ScholarDigital Library
- A. Faridi, B. Bellalta, and A. Checco, "Analysis of dynamic channel bonding in dense networks of WLANs," IEEE Trans. Mob. Comput., vol. 16, no. 8, pp. 2118--2131, Aug. 2017.Google ScholarDigital Library
- M. H. Dwijaksara, H. S. Jeon, and D. G. Jeong, "A joint user association and load balancing scheme for wireless LANs supporting multicast transmission," in Proc. 31th ACM Sym. Applied Comput. '16, Pisa, Italy, Apr. 2016. Google ScholarDigital Library
- IBM, IBM ILOG CPLEX, {Online}. http://www-01.ibm.com/software/commerce/optimization/cplex-optimizer, Accessed: 2017-08-10.Google Scholar
- "lp_solve 5.5", {Online}. http://lpsolve.sourceforge.net /5.5/, Accessed: 2017-08-10.Google Scholar
- W. Dinkelbach, "On nonlinear fractional programming," Management Science, vol. 13, no. 7 pp. 492--498, Mar. 1967. Google ScholarDigital Library
- Y. Almogy and O. Levin, "A class of fractional programming problems," Operations Research vol. 19, no. 1, pp. 57--67, Feb. 1971.Google ScholarDigital Library
- FICO Xpress Optimization Suite, "MIP formulations and linearizations," June 2009, {Online}. Available: http://www.fico.com/, Accessed: 2017-08-10.Google Scholar
Index Terms
- A centralized channelization scheme for wireless LANs exploiting channel bonding
Recommendations
Constrained channel bonding based on maximum achievable throughput in WLANs
AbstractIn Wireless Local Area Networks, channel bonding allows several basic channels to constitute a wide channel. The wide channel can increase potential throughput in a single Basic Service Set (BSS). However, channel contention among BSSs is more ...
Adaptive channel bonding in multicarrier wireless networks
MobiHoc '13: Proceedings of the fourteenth ACM international symposium on Mobile ad hoc networking and computingTo support high data rate applications such as multimedia streaming, the ongoing standardization of the next generation Wi-Fi increases the channel bonding from 40 MHz in 802.11n to 80, and even 160 MHz under certain conditions in 802.11ac. However, ...
Efficient channel access scheme for multiuser parallel transmission under channel bonding in IEEE 802.11ac
Channel bonding proposed in IEEE 802.11ac has the potential to multiply the physical data rate with wider bandwidths. However, the backward compatibility with legacy 802.11 devices makes the available frequency resource severely underutilised. Furthermore,...
Comments