Huiqing Wang
ABSTRACT
In this paper, a QoS routing protocol is proposed for a multihop wireless network with infrastructure support. Such networks will benefit existing applications in WLAN as the network coverage is greatly extended without incurring additional cost. The network resources can also be more efficiently utilized as load-balance can be achieved among neighboring access points (APs) through multihop connections. Neighboring APs usually operate at orthogonal channels to reduce interference and improve channel utilization. The channel diversity will impact the route choosing. In this paper, a load estimation metric is proposed to effectively estimate the load at AP. Unlike previous load-balance algorithms, mobile host (MH) will connect to AP with more residual bandwidth. MHs will also monitor the QoS to react quickly to the dynamics of the wireless networks. Upon detected QoS violation at the MH or AP, the MHs will perform channel switching and connect to other APs so that congestion is alleviated. Through simulation study, our proposal is proven to be able to efficiently utilize the network resources even when the network traffic changes very fast.
- "Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications," IEEE Standard 802.11, June 1999.Google Scholar
- J. So and N. H. Vaidya, "A Routing Protocol for Utilizing Multiple Channels in Multi-Hop Wireless Networks with a Single Transceiver," Technical Report, Oct. 2004.Google Scholar
- J. So and N. H. Vaidya, "Routing and Channel Assignment in Multi-Channel Multi-Hop Wireless Networks with Single Network Interface," in The Second International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks (QShine), Aug 2005. Google ScholarDigital Library
- A. Raniwala and T.-C. Chiueh, "Centralized Channel Assignment and Routing Algorithms for Multi-channel Wireless Mesh Networks," ACM Mobile Computing and Communications Review (MC2R), vol. Vol. 8, No. 2, Apr. 2004. Google ScholarDigital Library
- A. Raniwala and T.-C. Chiueh, "Architecture and algorithms for an IEEE 802.11-based multi-channel wireless mesh network," INFOCOM 2005. 24th Annual Joint Conference of the IEEE Computer and Communications Societies. Proceedings IEEE, vol. 3, pp. 2223--2234, 2005.Google ScholarCross Ref
- P. Kyasanur and N. H. Vaidya, "Capacity of multi-channel wireless networks: impact of number of channels and interfaces," MobiCom '05: Proceedings of the 11th annual international conference on Mobile computing and networking, pp. 43--57, 2005. Google ScholarDigital Library
- C. E. Perkins and E. M. Royer, "Ad-hoc On-demand Distance Vector Routing," Proceedings of the Second IEEE Workshop on Mobile Computing Systems and Applications, pp. 90--100, February 1999. Google ScholarDigital Library
- D. B. Johnaon and D. A. Maltz, "Dynamic Source Routing in Ad Hoc Wireless Networks," Mobile Computing, vol. pp. 153--181, 1996.Google Scholar
- R. Draves, J. Padhye, and B. Zill, "Routing in multi-radio, multi-hop wireless mesh networks," MobiCom '04: Proceedings of the 10th annual international conference on Mobile computing and networking, pp. 114--128, 2004. Google ScholarDigital Library
- Z. Fu, B. Greenstein, X. Meng, and S. Lu, "Design and implementation of a tcp-friendly transport protocol for ad hoc wireless networks," ICNP '02: Proceedings of the 10th IEEE International Conference on Network Protocols, pp. 216--225, 2002. Google ScholarDigital Library
- "The Network Simulator ns-2," http://www.isi.edu/nsnam/ns/.Google Scholar
Index Terms
- QoS routing in multi-channel multihop wireless networks with infrastructure support
Recommendations
Interference-aware QoS routing for multi-rate multi-radio multi-channel IEEE 802.11 wireless mesh networks
QoS routing in multi-channel wireless mesh networks (WMNs) with contention-based MAC protocols is a very challenging problem. In this paper, we propose an on-demand bandwidth-constrained routing protocol for multiradio multi-rate multi-channel WMNs with ...
A packet scheduling approach to QoS support in multihop wireless networks
Providing packet-level quality of service (QoS) is critical to support both rate-sensitive and delay-sensitive applications in bandwidth-constrained, shared-channel, multihop wireless networks. Packet scheduling has been a very popular paradigm to ensure ...
Comments